催化学报 ›› 2022, Vol. 43 ›› Issue (7): 1774-1804.DOI: 10.1016/S1872-2067(22)64105-6
赵辉a,b, 茅沁怡a,b, 蹇亮a,b, 董玉明a,b,*(), 朱永法c,#()
收稿日期:
2021-11-06
接受日期:
2021-12-15
出版日期:
2022-07-18
发布日期:
2022-05-20
通讯作者:
董玉明,朱永法
基金资助:
Hui Zhaoa,b, Qinyi Maoa,b, Liang Jiana,b, Yuming Donga,b,*(), Yongfa Zhuc,#()
Received:
2021-11-06
Accepted:
2021-12-15
Online:
2022-07-18
Published:
2022-05-20
Contact:
Yuming Dong, Yongfa Zhu
Supported by:
摘要:
氢能是实现碳中和目标的关键能源之一. 光催化分解水制氢是一项绿色制氢技术, 自从20世纪80年代日本科学家Honda和Fujishima首次发现了TiO2电极上的光电解水产氢以来, 该技术已成为了全世界关注的研究方向. 负载助催化剂能够提高电荷分离、降低过电势/活化能和加快表面反应, 作为一种有效的改性策略被广泛地用于提高光催化分解水制氢效率. 助催化剂的性能在很大程度上依赖其沉积方式, 光沉积有助于加快光生电子-空穴对从光催化剂向助催化剂的转移, 大幅改善了电荷的分离和传输效率, 显著提升了催化剂的光催化性能. 同时, 该策略操作简单、条件温和以及无需额外添加氧化还原试剂来实现助催化剂的生成. 从目前报道的助催化剂光沉积研究中可以发现, 贵金属基助催化剂的光沉积在光催化分解水反应中已被广泛研究, 然而贵金属价格昂贵、储量稀少, 极大限制了其在大规模能源生产中的应用. 为此, 光沉积地球储量丰富的非贵金属助催化剂受到了研究者高度重视, 近年来也取得了一些重要的进展, 但尚未有综述进行报道.
本文综述了近年来光沉积非贵金属光催化分解水助催化剂的研究进展. 总结了非贵金属水分解助催化剂光沉积的基础, 包括光沉积的原理、光沉积的优势、助催化剂的种类、助催化剂的作用、影响光沉积的因素、光沉积改性策略以及设计助催化剂光沉积的考虑因素. 从制备方法、催化性能和作用机制等方面, 详细讨论了不同非贵金属助催化剂光沉积在光催化分解水中的应用, 包括制氢半反应(过渡金属、过渡金属硫化物、过渡金属磷化物、过渡金属氧化物和过渡金属氢氧化物)、制氧半反应(钴基氧化物、磷酸盐和羟基氧化物以及其他过渡金属氧化物)和全分解水反应(沉积产氢助催化剂、沉积产氧助催化剂和产氢-产氧双助催化剂共沉积). 提出了非贵金属助催化剂光沉积在光催化水分解应用中面临的挑战和可能的未来研究方向. 本综述不仅展现出光沉积策略在高效、稳定、低成本的非贵金属基水分解助催化剂开发中的巨大潜力, 而且对深入理解非贵金属助催化剂诱导加快光催化分解水反应的机制具有重要意义.
赵辉, 茅沁怡, 蹇亮, 董玉明, 朱永法. 光催化水分解中地球储量丰富助催化剂的光沉积方法、功能与机理[J]. 催化学报, 2022, 43(7): 1774-1804.
Hui Zhao, Qinyi Mao, Liang Jian, Yuming Dong, Yongfa Zhu. Photodeposition of earth-abundant cocatalysts in photocatalytic water splitting: Methods, functions, and mechanisms[J]. Chinese Journal of Catalysis, 2022, 43(7): 1774-1804.
Photocatalyst | Cocatalyst | Light source | Sacrificial agent a | Activity (μmol h-1 g-1) b | Enhancement factor | AQE (%) c | Stability at least (h) | Ref. (year) | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TiO2 | Ni | UV-Vis (Xe) | Methanol | 2547 | 135 | 8.1 (365 nm) | — d | [ | |||||||
CdS-titanate | Ni | λ ≥ 420 nm (Xe) | Ethanol | 11038 | 77 | 21 (420 nm) | 15 | [ | |||||||
CdS/ZnS | Ni | λ ≥ 380 nm (Xe) | Na2S | — | — | — | — | [ | |||||||
g-C3N4 | Ni | λ ≥ 420 nm (Xe) | Triethanolamine (TEOA) | 85 (during 128 h) | — | — | 128 | [ | |||||||
g-C3N4 | Ni | AM 1.5G (Xe) | TEOA | 4318 | 411 | 2.01 (400 nm) | 48 | [ | |||||||
Sulfur doped g-C3N4 | Ni | λ ≥ 420 nm (Xe) | TEOA | 2021.3 | 84 | 3.2 (405 nm) | 24 | [ | |||||||
ZnxCd1-xS | Ni | White light (LED) | Na2S + Na2SO3 | 11993 | 2.5 | — | 20 | [ | |||||||
CdS | Ni | λ ≥ 420 nm (Xe) | Lactic acid | — | — | — | — | [ | |||||||
CdS | Ni | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 326700 | 35 | — | 16 | [ | |||||||
CdS | Ni-Ni(OH)2 | Vis (Xe) | Isopropanol | 428000 | — | — | 24 (Na2S+Na2SO3) | [ | |||||||
g-C3N4 | Co | AM 1.5 (Xe) | TEOA | 2296 | 75 | 6.2% (400 nm) | 48 | [ | |||||||
CdS | Co | λ ≥ 420 nm (Xe) | (NH4)2SO3 | 25980 | 17 | — | — | [ | |||||||
CdS | Co | λ ≥ 420 nm (Xe) | C6H5CH2OH | 169600 | — | 63.2% (420 nm) | 40 | [ | |||||||
TiO2 | Co | 780 nm > λ > 320 nm (Xe) | Methanol | 8398 | 8.9 | — | 28 | [ | |||||||
HNb3O8 | Cu | Simulated sunlight | TEOA | 591 | 23.6 | — | 16 | [ | |||||||
CdS | Cu | UV-Vis (Hg) | Na2S+Na2SO3 | 24880 | 4.8 | — | — | [ | |||||||
TiO2 | Cu, Ni | 370 nm > λ > 310nm (Hg) | Ethanol | Cu > Ni | — | — | — | [ | |||||||
TiO2-ZrO2 | Cu, Ni | UV (Hg) | Methanol | Cu (571) > Ni | — | — | — | [ | |||||||
ZnxCd1-xS | MoS2 | λ ≥ 420 nm (Xe) | Na2S + Na2SO3 | 420 | 210 | — | 24 | [ | |||||||
rGO/CdS | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 560 | 4.3 | — | 21 | [ | |||||||
ZnIn2S4 | MoS2 | λ > 420 nm (Xe) | Lactic acid | 8047 | 28 | — | [ | ||||||||
g-C3N4 | MoS2 | λ > 420 nm (Xe) | TEOA | 252 | — | — | 18 | [ | |||||||
Graphene-CdS | MoS2 | λ > 420 nm (Xe) | Lactic acid | 12825 | 30 | 26.8 (420 nm) | 20 | [ | |||||||
UiO-66/CdS | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 32500 | 60 | 23.6 (420 nm) | 16 | [ | |||||||
CdS-TiO2 | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 14000 | 38.9 | 19.3 (420 nm) | 16 | [ | |||||||
g-C3N4/red phosphorus | MoS2 | λ > 420 nm (Xe) | TEOA | 257.9 | 4.4 | — | — | [ | |||||||
CdS | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 6100 | 17.6 | — | 12 | [ | |||||||
g-C3N4 | MoS2 | λ ≥ 400 nm (Xe) | Lactic acid | 660 | — | 5.67 (400 nm) | 9 | [ | |||||||
Cu2-xS/ Mn0.5Cd0.5S | MoS2 | λ ≥ 420 nm (Xe) | Na2S + Na2SO3 | 13752.4 | 1.7 | 16.08 (420 nm) | < 12 | [ | |||||||
CdS | MoS2 | Vis (Xe) | Lactic acid | 24800 | 16.5 | 26 (420 nm) | [ | ||||||||
CdS/TiO2 | MoS2, NiSx | λ ≥ 420 nm (Xe) | Na2S + Na2SO3 | 28000 | — | 36.8 (420 nm) | 20 | [ | |||||||
TiO2-Eosin Y | MoSx | AM 1.5G (Xe) | TEOA | 1630 | 4.5 | [ | |||||||||
CdS | MoSx | λ > 400 nm (Xe) | Lactic acid | 8080 | 3.2 | 21 | [ | ||||||||
CdS | MoSx | λ > 420 nm (Xe) | Lactic acid | 15000 | — | 7.6 (450 nm) | 10 | [ | |||||||
Natural attapulgite/Co(OH)2- Erythrosin B | Metal (M: Co, Ni, Fe, Cu, and Zn) doped MoSx | λ ≥ 450 nm (LED) | TEOA | 70500 | 1.6 | 47.7 (500 nm) | — | [ | |||||||
CdS | MoSx | Vis (LED) | Lactic acid | 6657 | 21.3 | — | — | [ | |||||||
TiO2 | MoSx | UV-Vis (Xe) | Methanol | 1835.7 | 177 | 13.6 (365 nm) | 12 | [ | |||||||
CdS | MoSx | λ ≥ 420 nm (Xe) | Lactic acid | 22500 | 70 | 29.16 (435 nm) | 20 | [ | |||||||
Co containing MOF-Erythrosin B | MoSx | λ ≥ 450 nm (LED) | TEOA | 5260 | 20 | 15.0 (500 nm) | — | [ | |||||||
TiO2-Eosin Y | MoSx | λ ≥ 420 nm (LED) | TEOA | 6191 | 4.5 | 27.5 (500 nm) | — | [ | |||||||
TiO2 | Metal (M: Co, Ni, Fe, Cu, and Zn) doped MoSx | 400 > λ > 200 nm (Hg) | Ethanol/PBS | 669 | — | — | 20 | [ | |||||||
CdS | CoMoSx | λ ≥ 420 nm (LED) | Lactic acid | 3570 | — | — | 10 | [ | |||||||
g-C3N4, | NiS, CoS | AM 1.5G (Xe) | TEOA | 16400 | 2500 | — | 40 | [73] (2018) | |||||||
CdS | NiS, | AM 1.5G (Xe) | TEOA | 34014 | — | — | — | ||||||||
Photocatalyst | Cocatalyst | Light source | Sacrificial agent a | Activity (μmol h-1 g-1) b | Enhancement factor | AQE (%) c | Stability at least (h) | Ref. (year) | |||||||
CdS-diethylenetriamine | NiS | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 230.6 (μmol h-1) | 8.42 | — | 16 | [ | |||||||
TiO2 | NiS | 365 nm (LED) | Methanol | 6200 | 71 | 25.0 (340 nm) | — | [ | |||||||
TiO2 | NiSx, CoSx, CuSx | 365 nm (LED) | Methanol | 5288.4 | 171.7 | 21.44 (356 nm) | 24 | [ | |||||||
g-C3N4 | NiS, CoSx, CuSx | 420 nm (LED) | TEOA | 244 | — | — | 7.5 | [ | |||||||
rGO/TiO2 | CoSx | 365 nm (LED) | TEOA | 2569.7 | 12.7 | — | — | [ | |||||||
g-C3N4/Co3O4 | MoS2, NiS, CoS | λ > 420 nm (Xe) | TEOA | 5250 | 25.6 | 8.1 (420 nm) | 20 | [ | |||||||
Znln2S4 | MoS2, CuS | λ > 400 nm (Xe) | Lactic acid | 3056 | 37 | — | 12 | [ | |||||||
CdS | MoOxSy | λ ≥ 420 nm (Xe) | Methanol | 439 | 4 | — | 20 | [ | |||||||
TiO2 | NiCuSx | 365 nm (LED) | Methanol | 8558 | — | 34.67 (365 nm) | 10 | [ | |||||||
TiO2 | NiWSx | 365 nm (LED) | Ethanol | 4580 | — | 13 (365 nm) | 10 | [ | |||||||
CdS | CoxP | λ ≥ 420 nm (Xe), AM 1.5G (Xe) | Na2S+Na2SO3 | 500000 (λ ≥ 420 nm), 270000 (AM 1.5G) | 22.4 | — | 25 (λ ≥ 420 nm), 7 (AM 1.5G) | [ | |||||||
ZnIn2S4 | Co-P alloy | λ > 420 nm (Xe) | Lactic acid | 7840 | 44 | 4.3 (420 nm) | 15 | [ | |||||||
MAPbI3 | CoP | λ ≥ 420 nm (Xe) | NaHPO2 | 785.9 | 8 | — | 27 | [ | |||||||
g-C3N4 | NixP | AM 1.5G (Xe) | Lactic acid | 8585 | 572.3 | — | 75 | [ | |||||||
N-TiO2/g-C3N4 | NixP | 780 > λ > 350 nm (Xe) | TEOA | 5438 | 7.5 | — | 10 | [ | |||||||
CdS | NixP | λ ≥ 420 nm (Xe) | Lactic acid | 69200 | 27 | 4.2 (475 nm) | 15 | [ | |||||||
CdS | NixP | λ ≥ 420 nm (Xe) | Lactic acid | 22500 | 70 | — | — | [ | |||||||
CdS@CuS | NixP | λ > 420 nm (Xe) | Na2S+Na2SO3 | 18160 | 5.6 | 13.06 (420 nm) | 24 | [ | |||||||
CdS/TiO2 | NixP | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 28600 | — | — | — | [ | |||||||
Defect-rich ZnS | Ni-P alloy | 1000 > λ > 420 (Xe) | Na2S+Na2SO3 | 3496 | 29 | 2.4 (420 nm) | 24 | [ | |||||||
Mn0.5Cd0.5S | Ni2P | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 31830 | 2.8 | 32 (420 nm) | 15 | [ | |||||||
g-C3N4, TiO2, CdS | Ni-P alloy | 420 nm (LED) | TEOA | 118.2 (g-C3N4) | 35.8 | 0.66 (420 nm) | 10 (g-C3N4) | [ | |||||||
TiO2 | CuxP | λ = 365 nm (LED) | Methanol | 1870 | 30 | 7.7 (365 nm) | 10 | [ | |||||||
CdS | Ni2O3 | λ > 400 nm (Xe) | NaNO2 | 4456 | 41 | — | — | [ | |||||||
CdS | NiO, Ni2O3 | λ > 400 nm (Xe) | NaNO2 | 5908 | 117 | 8.6 (400 nm) | — | [ | |||||||
TiO2 | NiOx | UV-Vis (Xe) | Methanol | High than Ni, Ni(OH)2, and NiO using other methods | — | — | — | [ | |||||||
Zn1-xCdxS | NiO | λ ≥ 420 nm (Xe) | — | 227.3 | 2 | 1.5 (430 nm) | 12 | [ | |||||||
Cd1-xZnxS@ O-MoS2 | NiOx | λ > 420 nm (Xe) | Na2S+Na2SO3 | 223170 | 1.2 | 64.1 (420 nm) | — | [ | |||||||
CdS/TiO2 | NiOx | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 14100 | — | — | — | [ | |||||||
Graphene assembly-Eos-in Y | CuO | λ > 420 nm (Xe) | TEOA | 5850 | 2.3 | — | 12 | [ | |||||||
TiO2 | CuOx | AM 1.5G (Xe) | Methanol | 407 | — | — | — | [ | |||||||
g-C3N4 | Ni(OH)2, Co(OH)2 | AM 1.5G (Xe) | TEOA | 19000 | — | 0.88 (400 nm) | 16 | [ | |||||||
g-C3N4 | Ni(OH)2 | AM 1.5G (Xe) | TEOA | 13707.86 | 718 | 0.78 (400 nm) | 20 | [ | |||||||
CdS | Ni(OH)2 | UV-Vis (Xe) | Ethanol | 3933 | 3.8 | — | — | [ | |||||||
g-C3N4/WO3 | Ni(OH)x | λ > 400 nm (Xe) | TEOA | 576 | 10.8 | — | 12 | [ | |||||||
CdS | Co-Pi | λ ≥ 420 nm (Xe) | Lactic acid | 13300 | 2.6 | 24.3 (420 nm) | 12 | [ | |||||||
TiO2 | Co3O4 | UV-Vis (Xe) | Methanol | 560 | 9.4 | — | — | [ | |||||||
CaIn2S4 | MnOx | 750 nm ≥ λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 5520 | 9.4 | — | — | [ | |||||||
NH2-UiO-66 | MnOx | λ ≥ 400 nm (Xe) | TEOA | 577.9 | — | — | — | [ | |||||||
CdS | MoS2 + Co-Pi | UV-cut (Xe) | Lactic acid | 40500 | 27 | 36 (420 nm) | 20 | [ | |||||||
ZnS@CdS | Ni + CoOx | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 20325 | 1.8 | — | 18 | [94] (2018) |
Table 1 The photodeposited earth-abundant cocatalysts for photocatalytic H2 evolution half reaction.
Photocatalyst | Cocatalyst | Light source | Sacrificial agent a | Activity (μmol h-1 g-1) b | Enhancement factor | AQE (%) c | Stability at least (h) | Ref. (year) | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TiO2 | Ni | UV-Vis (Xe) | Methanol | 2547 | 135 | 8.1 (365 nm) | — d | [ | |||||||
CdS-titanate | Ni | λ ≥ 420 nm (Xe) | Ethanol | 11038 | 77 | 21 (420 nm) | 15 | [ | |||||||
CdS/ZnS | Ni | λ ≥ 380 nm (Xe) | Na2S | — | — | — | — | [ | |||||||
g-C3N4 | Ni | λ ≥ 420 nm (Xe) | Triethanolamine (TEOA) | 85 (during 128 h) | — | — | 128 | [ | |||||||
g-C3N4 | Ni | AM 1.5G (Xe) | TEOA | 4318 | 411 | 2.01 (400 nm) | 48 | [ | |||||||
Sulfur doped g-C3N4 | Ni | λ ≥ 420 nm (Xe) | TEOA | 2021.3 | 84 | 3.2 (405 nm) | 24 | [ | |||||||
ZnxCd1-xS | Ni | White light (LED) | Na2S + Na2SO3 | 11993 | 2.5 | — | 20 | [ | |||||||
CdS | Ni | λ ≥ 420 nm (Xe) | Lactic acid | — | — | — | — | [ | |||||||
CdS | Ni | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 326700 | 35 | — | 16 | [ | |||||||
CdS | Ni-Ni(OH)2 | Vis (Xe) | Isopropanol | 428000 | — | — | 24 (Na2S+Na2SO3) | [ | |||||||
g-C3N4 | Co | AM 1.5 (Xe) | TEOA | 2296 | 75 | 6.2% (400 nm) | 48 | [ | |||||||
CdS | Co | λ ≥ 420 nm (Xe) | (NH4)2SO3 | 25980 | 17 | — | — | [ | |||||||
CdS | Co | λ ≥ 420 nm (Xe) | C6H5CH2OH | 169600 | — | 63.2% (420 nm) | 40 | [ | |||||||
TiO2 | Co | 780 nm > λ > 320 nm (Xe) | Methanol | 8398 | 8.9 | — | 28 | [ | |||||||
HNb3O8 | Cu | Simulated sunlight | TEOA | 591 | 23.6 | — | 16 | [ | |||||||
CdS | Cu | UV-Vis (Hg) | Na2S+Na2SO3 | 24880 | 4.8 | — | — | [ | |||||||
TiO2 | Cu, Ni | 370 nm > λ > 310nm (Hg) | Ethanol | Cu > Ni | — | — | — | [ | |||||||
TiO2-ZrO2 | Cu, Ni | UV (Hg) | Methanol | Cu (571) > Ni | — | — | — | [ | |||||||
ZnxCd1-xS | MoS2 | λ ≥ 420 nm (Xe) | Na2S + Na2SO3 | 420 | 210 | — | 24 | [ | |||||||
rGO/CdS | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 560 | 4.3 | — | 21 | [ | |||||||
ZnIn2S4 | MoS2 | λ > 420 nm (Xe) | Lactic acid | 8047 | 28 | — | [ | ||||||||
g-C3N4 | MoS2 | λ > 420 nm (Xe) | TEOA | 252 | — | — | 18 | [ | |||||||
Graphene-CdS | MoS2 | λ > 420 nm (Xe) | Lactic acid | 12825 | 30 | 26.8 (420 nm) | 20 | [ | |||||||
UiO-66/CdS | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 32500 | 60 | 23.6 (420 nm) | 16 | [ | |||||||
CdS-TiO2 | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 14000 | 38.9 | 19.3 (420 nm) | 16 | [ | |||||||
g-C3N4/red phosphorus | MoS2 | λ > 420 nm (Xe) | TEOA | 257.9 | 4.4 | — | — | [ | |||||||
CdS | MoS2 | λ ≥ 420 nm (Xe) | Lactic acid | 6100 | 17.6 | — | 12 | [ | |||||||
g-C3N4 | MoS2 | λ ≥ 400 nm (Xe) | Lactic acid | 660 | — | 5.67 (400 nm) | 9 | [ | |||||||
Cu2-xS/ Mn0.5Cd0.5S | MoS2 | λ ≥ 420 nm (Xe) | Na2S + Na2SO3 | 13752.4 | 1.7 | 16.08 (420 nm) | < 12 | [ | |||||||
CdS | MoS2 | Vis (Xe) | Lactic acid | 24800 | 16.5 | 26 (420 nm) | [ | ||||||||
CdS/TiO2 | MoS2, NiSx | λ ≥ 420 nm (Xe) | Na2S + Na2SO3 | 28000 | — | 36.8 (420 nm) | 20 | [ | |||||||
TiO2-Eosin Y | MoSx | AM 1.5G (Xe) | TEOA | 1630 | 4.5 | [ | |||||||||
CdS | MoSx | λ > 400 nm (Xe) | Lactic acid | 8080 | 3.2 | 21 | [ | ||||||||
CdS | MoSx | λ > 420 nm (Xe) | Lactic acid | 15000 | — | 7.6 (450 nm) | 10 | [ | |||||||
Natural attapulgite/Co(OH)2- Erythrosin B | Metal (M: Co, Ni, Fe, Cu, and Zn) doped MoSx | λ ≥ 450 nm (LED) | TEOA | 70500 | 1.6 | 47.7 (500 nm) | — | [ | |||||||
CdS | MoSx | Vis (LED) | Lactic acid | 6657 | 21.3 | — | — | [ | |||||||
TiO2 | MoSx | UV-Vis (Xe) | Methanol | 1835.7 | 177 | 13.6 (365 nm) | 12 | [ | |||||||
CdS | MoSx | λ ≥ 420 nm (Xe) | Lactic acid | 22500 | 70 | 29.16 (435 nm) | 20 | [ | |||||||
Co containing MOF-Erythrosin B | MoSx | λ ≥ 450 nm (LED) | TEOA | 5260 | 20 | 15.0 (500 nm) | — | [ | |||||||
TiO2-Eosin Y | MoSx | λ ≥ 420 nm (LED) | TEOA | 6191 | 4.5 | 27.5 (500 nm) | — | [ | |||||||
TiO2 | Metal (M: Co, Ni, Fe, Cu, and Zn) doped MoSx | 400 > λ > 200 nm (Hg) | Ethanol/PBS | 669 | — | — | 20 | [ | |||||||
CdS | CoMoSx | λ ≥ 420 nm (LED) | Lactic acid | 3570 | — | — | 10 | [ | |||||||
g-C3N4, | NiS, CoS | AM 1.5G (Xe) | TEOA | 16400 | 2500 | — | 40 | [73] (2018) | |||||||
CdS | NiS, | AM 1.5G (Xe) | TEOA | 34014 | — | — | — | ||||||||
Photocatalyst | Cocatalyst | Light source | Sacrificial agent a | Activity (μmol h-1 g-1) b | Enhancement factor | AQE (%) c | Stability at least (h) | Ref. (year) | |||||||
CdS-diethylenetriamine | NiS | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 230.6 (μmol h-1) | 8.42 | — | 16 | [ | |||||||
TiO2 | NiS | 365 nm (LED) | Methanol | 6200 | 71 | 25.0 (340 nm) | — | [ | |||||||
TiO2 | NiSx, CoSx, CuSx | 365 nm (LED) | Methanol | 5288.4 | 171.7 | 21.44 (356 nm) | 24 | [ | |||||||
g-C3N4 | NiS, CoSx, CuSx | 420 nm (LED) | TEOA | 244 | — | — | 7.5 | [ | |||||||
rGO/TiO2 | CoSx | 365 nm (LED) | TEOA | 2569.7 | 12.7 | — | — | [ | |||||||
g-C3N4/Co3O4 | MoS2, NiS, CoS | λ > 420 nm (Xe) | TEOA | 5250 | 25.6 | 8.1 (420 nm) | 20 | [ | |||||||
Znln2S4 | MoS2, CuS | λ > 400 nm (Xe) | Lactic acid | 3056 | 37 | — | 12 | [ | |||||||
CdS | MoOxSy | λ ≥ 420 nm (Xe) | Methanol | 439 | 4 | — | 20 | [ | |||||||
TiO2 | NiCuSx | 365 nm (LED) | Methanol | 8558 | — | 34.67 (365 nm) | 10 | [ | |||||||
TiO2 | NiWSx | 365 nm (LED) | Ethanol | 4580 | — | 13 (365 nm) | 10 | [ | |||||||
CdS | CoxP | λ ≥ 420 nm (Xe), AM 1.5G (Xe) | Na2S+Na2SO3 | 500000 (λ ≥ 420 nm), 270000 (AM 1.5G) | 22.4 | — | 25 (λ ≥ 420 nm), 7 (AM 1.5G) | [ | |||||||
ZnIn2S4 | Co-P alloy | λ > 420 nm (Xe) | Lactic acid | 7840 | 44 | 4.3 (420 nm) | 15 | [ | |||||||
MAPbI3 | CoP | λ ≥ 420 nm (Xe) | NaHPO2 | 785.9 | 8 | — | 27 | [ | |||||||
g-C3N4 | NixP | AM 1.5G (Xe) | Lactic acid | 8585 | 572.3 | — | 75 | [ | |||||||
N-TiO2/g-C3N4 | NixP | 780 > λ > 350 nm (Xe) | TEOA | 5438 | 7.5 | — | 10 | [ | |||||||
CdS | NixP | λ ≥ 420 nm (Xe) | Lactic acid | 69200 | 27 | 4.2 (475 nm) | 15 | [ | |||||||
CdS | NixP | λ ≥ 420 nm (Xe) | Lactic acid | 22500 | 70 | — | — | [ | |||||||
CdS@CuS | NixP | λ > 420 nm (Xe) | Na2S+Na2SO3 | 18160 | 5.6 | 13.06 (420 nm) | 24 | [ | |||||||
CdS/TiO2 | NixP | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 28600 | — | — | — | [ | |||||||
Defect-rich ZnS | Ni-P alloy | 1000 > λ > 420 (Xe) | Na2S+Na2SO3 | 3496 | 29 | 2.4 (420 nm) | 24 | [ | |||||||
Mn0.5Cd0.5S | Ni2P | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 31830 | 2.8 | 32 (420 nm) | 15 | [ | |||||||
g-C3N4, TiO2, CdS | Ni-P alloy | 420 nm (LED) | TEOA | 118.2 (g-C3N4) | 35.8 | 0.66 (420 nm) | 10 (g-C3N4) | [ | |||||||
TiO2 | CuxP | λ = 365 nm (LED) | Methanol | 1870 | 30 | 7.7 (365 nm) | 10 | [ | |||||||
CdS | Ni2O3 | λ > 400 nm (Xe) | NaNO2 | 4456 | 41 | — | — | [ | |||||||
CdS | NiO, Ni2O3 | λ > 400 nm (Xe) | NaNO2 | 5908 | 117 | 8.6 (400 nm) | — | [ | |||||||
TiO2 | NiOx | UV-Vis (Xe) | Methanol | High than Ni, Ni(OH)2, and NiO using other methods | — | — | — | [ | |||||||
Zn1-xCdxS | NiO | λ ≥ 420 nm (Xe) | — | 227.3 | 2 | 1.5 (430 nm) | 12 | [ | |||||||
Cd1-xZnxS@ O-MoS2 | NiOx | λ > 420 nm (Xe) | Na2S+Na2SO3 | 223170 | 1.2 | 64.1 (420 nm) | — | [ | |||||||
CdS/TiO2 | NiOx | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 14100 | — | — | — | [ | |||||||
Graphene assembly-Eos-in Y | CuO | λ > 420 nm (Xe) | TEOA | 5850 | 2.3 | — | 12 | [ | |||||||
TiO2 | CuOx | AM 1.5G (Xe) | Methanol | 407 | — | — | — | [ | |||||||
g-C3N4 | Ni(OH)2, Co(OH)2 | AM 1.5G (Xe) | TEOA | 19000 | — | 0.88 (400 nm) | 16 | [ | |||||||
g-C3N4 | Ni(OH)2 | AM 1.5G (Xe) | TEOA | 13707.86 | 718 | 0.78 (400 nm) | 20 | [ | |||||||
CdS | Ni(OH)2 | UV-Vis (Xe) | Ethanol | 3933 | 3.8 | — | — | [ | |||||||
g-C3N4/WO3 | Ni(OH)x | λ > 400 nm (Xe) | TEOA | 576 | 10.8 | — | 12 | [ | |||||||
CdS | Co-Pi | λ ≥ 420 nm (Xe) | Lactic acid | 13300 | 2.6 | 24.3 (420 nm) | 12 | [ | |||||||
TiO2 | Co3O4 | UV-Vis (Xe) | Methanol | 560 | 9.4 | — | — | [ | |||||||
CaIn2S4 | MnOx | 750 nm ≥ λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 5520 | 9.4 | — | — | [ | |||||||
NH2-UiO-66 | MnOx | λ ≥ 400 nm (Xe) | TEOA | 577.9 | — | — | — | [ | |||||||
CdS | MoS2 + Co-Pi | UV-cut (Xe) | Lactic acid | 40500 | 27 | 36 (420 nm) | 20 | [ | |||||||
ZnS@CdS | Ni + CoOx | λ ≥ 420 nm (Xe) | Na2S+Na2SO3 | 20325 | 1.8 | — | 18 | [94] (2018) |
Fig. 9. (a) High-magnification TEM image of the Ni-TiO2 composite. (b) Comparison of the photocatalytic H2 evolution activity over Ni-TiO2 with different addition amounts of Ni(NO3)2. (c) Schematic illustration of Ni photodegradation and photocatalytic H2 production over Ni-TiO2. Reproduced with permission from Ref. [97]. Copyright 2013, The Royal Society of Chemistry.
Fig. 10. TEM image (a), HRTEM image (b), and SEM-EDX elemental mapping images (c) of C, N, and Ni of the Ni/g-C3N4 composite. (d) Comparison of the photocatalytic H2 evolution activity of Ni/g-C3N4 with different Ni loading amounts. (e) Photocatalytic H2 evolution of Ni/g-C3N4 irradiated by natural and stimulated sunlight. (f) Photocatalytic H2 evolution of Ni/g-C3N4 in the recycle experiment. (g) UV-Vis diffuse reflectance spectra of g-C3N4 and Ni/g-C3N4 and the H2 evolution rate of Ni/g-C3N4 along with different excitation light wavelengths. (h) Schematic diagram of photocatalytic H2 evolution over Ni/g-C3N4. Reproduced with permission from Ref. [50]. Copyright 2016, The Royal Society of Chemistry.
Fig. 11. (a) Schematic illustration of the photochemical synthesis of Ni1/CdS. XANES spectra (b) and the corresponding Fourier transform curves (c) of NiS, Ni1/CdS, and Ni(OH)2 reference at Ni K-edge. (d) Photocatalytic H2 evolution activity of Ni1/CdS, Ni(OH)2 NPs/CdS, and CdS. (e) Long-term photocatalytic H2 evolution activity of Ni1/CdS. (f) Gibbs free energy for H* adsorption on Ni1/CdS, Ni(OH)2 NPs/CdS and CdS. (g) Charge density distributions of conduction band edges of Ni1/CdS, Ni(OH)2 NPs/CdS and CdS. (h) Differential charge density maps of Ni1/CdS and Ni(OH)2 NPs/CdS. Reproduced with permission from Ref. [82]. Copyright 2020, Elsevier.
Fig. 12. HRTEM image (a) and selected area electron diffraction patterns (b) of ZnxCd1-xS/MoS2 junction. (c) Comparison of photocatalytic H2 evolution of ZnxCd1-xS/MoS2 with different atom ratios of Zn/Cd. (d) The loading contents of MoS2. Reproduced with permission from Ref. [52]. Copyright 2013, The Royal Society of Chemistry.
Fig. 13. (a) Schematic illustration of synthesizing MoS2 deposited g-C3N4 using photodeposition and physical mixing treatment. (b) Photocatalytic H2 evolution activities over MoS2 with different contents of deposited g-C3N4 composites using photodeposition. Single-particle photoluminescence images of pure g-C3N4 (c) and MoS2 deposited g-C3N4 composites using photodeposition (d) and physical mixing (e) treatment. Time-resolved diffuse reflectance spectra of pure g-C3N4 (f) and MoS2 deposited g-C3N4 composites (g) using photodeposition and heat mixing (h) treatment. Reproduced with permission from Ref. [24]. Copyright 2018, John Wiley and Sons.
Fig. 14. (a) Schematic diagram of photochemical preparation of NiS loaded g-C3N4 hybrid. TEM (b) and HRTEM (c) images of NiS loaded g-C3N4. (d) Comparison of the photocatalytic H2 evolution activity in the control experiment. (e) Photocatalytic H2 evolution in the recycle experiment. (f) UV-Vis diffuse reflectance spectra of g-C3N4 and NiS loaded g-C3N4 and the H2 evolution rate of NiS loaded g-C3N4 along with different excitation light wavelengths. (g) Schematic diagram of photocatalytic H2 evolution mechanism over NiS loaded g-C3N4. Reproduced with permission from Ref. [73]. Copyright 2018, Elsevier.
Fig. 15. (a) Schematic illustration for the photodeposition route of CoxP loaded CdS. (b) SEM elemental mapping of Cd, S, Co, and P of CoxP loaded CdS. (c) Photocatalytic H2 evolution activity over CoxP loaded CdS. (d) UV-Vis diffuse reflectance spectra of CdS and CoxP loaded CdS and the H2 evolution rate of CoxP loaded CdS along with different excitation light wavelengths. (e) Schematic illustration for photocatalytic H2 evolution mechanism of CoxP loaded CdS. (a-e) Reproduced with permission from Ref. [56]. Copyright 2016, Elsevier. (f) TEM elemental mapping of C, N, Ni, and P of NixP/g-C3N4 composite. (g) Schematic illustration for photocatalytic H2 evolution mechanism of NixP/g-C3N4 composite. (f,g) Reproduced with permission from Ref. [55]. Copyright 2017, American Chemical Society.
Fig. 16. (a) Schematic diagram of the TEOA-mediated photodeposition formation of Ni-P loaded g-C3N4. TEM images (b,c) and HRTEM image (d) of Ni-P loaded g-C3N4. (e) Photocatalytic H2 evolution in the control experiment. (f) Schematic illustration of photocatalytic H2 evolution mechanism over Ni-P loaded g-C3N4. Reproduced with permission from Ref. [87]. Copyright 2020, Springer.
Fig. 17. (a) HRTEM image of Co-Pi loaded CdS. (b) Comparison of the photocatalytic hydrogen production rates of CdS loaded with different amounts of Co-Pi and 1 wt% Pt in lactic acid aqueous solution under visible light irradiation. (c) Schematic illustration for photocatalytic H2 evolution mechanism of Co-Pi loaded CdS. (a-c) Reproduced with permission from Ref. [140]. Copyright 2016, Elsevier. (d) Comparison of the photocatalytic H2-production activities for TiO2 and Co3O4 composite samples. Reproduced with permission from Ref. [141]. Copyright 2016, Elsevier.
Fig. 18. (a) Schematic diagram for the preparation of CdS@MoS2@Co-Pi. TEM images of pure CdS (b) and CdS@MoS2@Co-Pi (c). (d) EDX elemental mapping of Cd, Mo, S, Co, and P in CdS@MoS2@Co-Pi. (e) Photocatalytic H2 evolution activity over different cocatalysts. (f) Schematic diagram for the photocatalytic H2 evolution mechanism of CdS@MoS2@Co-Pi. (g) Recycling test of photocatalytic H2 evolution over CdS@MoS2@Co-Pi. Reproduced with permission from Ref. [94]. Copyright 2019, American Chemical Society.
Fig. 19. Optimized slab structures for {100} (a), {010} (b), and {001} (c) slabs of Bi2MoO6. Calculated densities of states for {100} (d), {010} (e), and {001} (f) slabs of Bi2MoO6. (g) Schematic diagram of charge-separation process within Bi2MoO6. (h) SEM image of CoOx-Bi2MoO6 using photodeposition. (i) Photocatalytic oxygen evolution activity over pure Bi2MoO6 and CoOx-Bi2MoO6 using photodeposition and impregnation. Reproduced with permission from Ref. [15]. Copyright 2018, American Chemical Society.
Fig. 20. (a) High-resolution Co 2p XPS spectra of TaON/LVCoOx and TaON/HVCoOx. (b) Schematic illustration of the crystal structure of TaON/LVCoOx; (c) Normalized Co K-edge XANES spectra of TaON/LVCoOx and control samples, indicating the dominant Co2+ species in the bulk. TEM images of LVCoOx (d) and HVCoOx (e) (the inset is the particle size distribution of CoOx). (f) Photocatalytic O2 evolution activity over different photocatalysts. (g) Absorption spectrum and wavelength-dependent AQE of photocatalytic O2 production for TaON/LVCoOx. (h) Schematic diagram for the photocatalytic O2 evolution mechanism over CoOx loaded TaON. Reproduced with permission from Ref. [86]. Copyright 2021, The Royal Society of Chemistry.
Fig. 21. (a,b) SEM images of Co-Pi loaded BiVO4. (c) Photocatalytic O2 evolution over CoPi loaded BiVO4 with different loadings of Co-Pi. (d) Photocatalytic O2 evolution over BiVO4 modified with different cocatalysts. Reproduced with permission from Ref. [61]. Copyright 2012, American Chemical Society.
Fig. 22. SEM images of BiVO4 (a) and CoOx(OH)y/BiVO4 (b). (c) Photocatalytic O2 evolution over bare BiVO4 (a, blue), NiOx(OH)y/BiVO4 (b, magenta), and CoOx(OH)y/BiVO4 (c, red). SEM images of BiVO4 loaded by NiOx(OH)y with contents of 10 wt% (d), 1 wt% (e), and 0.1 wt% (f). (g) Schematic diagram for the energy band alignment for CoOx(OH)y/BiVO4 and NiOx(OH)y/BiVO4 along the (010) and (110) directions. (h) Schematic diagrams for oxygen evolution over CoOx(OH)y/BiVO4 and NiOx(OH)y/BiVO4 using NaIO3 as sacrificial agent. Reproduced with permission from Ref. [63]. Copyright 2020, American Chemical Society.
Fig. 23. (a) Dark field STEM image and histograms of metal particle size distribution of CoOx loaded MIL-125(Ti)-NH2. (b) Photocatalytic H2 and O2 evolution over CoOx loaded MIL-125(Ti)-NH2. (a,b) Reproduced with permission from Ref. [64]. Copyright 2019, Elsevier. (c) Photocatalytic H2 and O2 evolution over different SrTiO3(Al) based photocatalysts. Reproduced with permission from Ref. [160]. Copyright 2020, The Royal Society of Chemistry. (d) Photocatalytic H2 and O2 evolution over mpg-CNx-CoPi. Reproduced with permission from Ref. [151]. Copyright 2013, The Royal Society of Chemistry. (e) Photocatalytic overall water splitting over MnOx/CdS/Ti3+-SrTiO3 in the repeated experiment. Reproduced with permission from Ref. [65]. Copyright 2021, Elsevier. (f) Photocatalytic H2 and O2 evolution over Ba5Ta4O15 loaded by Cr2O3 with different deposition amounts. Reproduced with permission from Ref. [66]. Copyright 2016, John Wiley and Sons. (g) Schematic illustration for the deposition mechanisms of reductively photodeposited CrO42- and oxidatively photodeposited Cr2+. Reproduced with permission from Ref. [159]. Copyright 2017, John Wiley and Sons.
Fig. 24. TEM images of NiOx loaded GaN:ZnO (a) and CrOx-NiOx loaded GaN:ZnO (b). (c) Time courses of visible-light-driven overall water splitting on CrOx-NiOx loaded GaN:ZnO (circles) NiOx loaded GaN:ZnO (diamonds). Solid and open symbols indicate H2 and O2, respectively. (a-c) Reproduced with permission from Ref. [162]. Copyright 2010, John Wiley and Sons. (d) H2 and O2 evolution over CrOx-CuO loaded GaN:ZnO under ultraviolet-visible light irradiation. Reproduced with permission from Ref. [163]. Copyright 2011, The Royal Society of Chemistry.
Fig. 25. Selected-area electron diffraction pattern obtained from Rh/Cr2O3/CoOOH-loaded SrTiO3:Al (a) and corresponding transmission electron microscopy image of a particle (b). (c) Particle morphology and crystal orientation. Simulations of photocarrier distributions in SrTiO3:Al particles: Mapping of conduction-band energy, Ec (d); density of electrons (e-), n (e); density of holes (h+), p (f); energy band diagram (g); and electron and hole densities (h) as functions of position (x′, y′) with work function difference ΔWel = 0.2 eV. (i) Effect of ΔWel on electron-to-hole-density ratio at the {100} and {110} facets. (j) Ultraviolet-visible diffuse reflectance spectrum of bare SrTiO3:Al (black solid line) and wavelength dependence of external quantum efficiency (EQE) during water splitting on Rh/Cr2O3/CoOOH-loaded SrTiO3:Al (red symbols). (k) Recycle performance of Rh/Cr2O3/CoOOH-loaded SrTiO3:Al in photocatalytic water splitting. Reproduced with permission from Ref. [167]. Copyright 2020, Nature.
Fig. 26. (a) Schematic diagram for photodeposition of Pt and MnOx on CdS/g-C3N4 heterojunction. (b) Photocatalytic overall water splitting over CdS/g-C3N4 co-loaded by Pt and MnOx. (a,b) Reproduced with permission from Ref. [63]. Copyright 2020, American Chemical Society. (c) Schematic diagram for photocatalytic overall water splitting mechanism of Pt-ZnIn2S4/rGO/Co3O4-BiVO4 composite. (d) Photocatalytic overall water splitting over Pt-Znln2S4/GO/Co3O4-BiVO4. (c,d) Reproduced with permission from Ref. [89]. Copyright 2021, Springer.
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