Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (5): 1267-1276.DOI: 10.1016/S1872-2067(21)63962-1
• Articles • Previous Articles Next Articles
Chenxin Chena, Suqi Hea, Kamran Dastafkanb, Zehua Zoua, Qingxiang Wanga(
), Chuan Zhaob(
)
Received:2021-09-15
Accepted:2021-10-22
Online:2022-05-18
Published:2022-03-23
Contact:
Qingxiang Wang, Chuan Zhao
Supported by:Chenxin Chen, Suqi He, Kamran Dastafkan, Zehua Zou, Qingxiang Wang, Chuan Zhao. Sea urchin-like NiMoO4 nanorod arrays as highly efficient bifunctional catalysts for electrocatalytic/photovoltage-driven urea electrolysis[J]. Chinese Journal of Catalysis, 2022, 43(5): 1267-1276.
Add to citation manager EndNote|Ris|BibTeX
URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(21)63962-1
Fig. 1. (a) XRD patterns of NiMoO4/NF precursor and NiMoO4-x/NF(200?500 °C) catalyst; (b?f) SEM images of the samples calcined at different temperatures in Ar atmosphere.
Fig. 2. TEM images of NiMoO4-200/NF (a) and NiMoO4-300/NF (c), the corresponding HR-TEM images (b) and (d), the corresponding EDX diagram (e) and (f).
Fig. 3. High-resolution XPS survey spectra of NiMoO4-200/NF and NiMoO4-300/NF (a) and Ni 2p (b), Mo 3d (c) and O 1s (d) XPS spectra of the two samples.
Fig. 4. LSV curves (a) and the corresponding Tafel plots (b) of different electrodes in 1.0 mol/L KOH; (c) Comparison of the overpotentials required to reach the current density of 10 mA cm-2 among catalyst in this work and previously reported HER catalysts; (d) Nyquist plots at - 77 mV (vs. RHE) for various electrocatalysts in 1.0 mol/L KOH; (e) LSV curves of NiMoO4-200/NF before and after 5000 cycles; (f) The dependence current density on the electrolysis time of NiMoO4-200/NF in 1.0 mol/L KOH.
Fig. 5. LSV curves of NiMoO4-300/NF, NiMoO4/NF, IrO2/NF and NF in 1.0 mol/L KOH electrolyte (a) and their Tafel plots (b); (c) Nyquist plots of various electrocatalysts at -1.523V (vs. RHE) with the simplified Randles model (inset); (d) LSV curves of NiMoO4-300/NF before and after CV scan for 3000 cycles, and the dependence current density on the electrolysis time of NiMoO4-300/NF in 1.0 mol/L KOH (inset).
Fig. 6. The comparison of cathodic LSV curves of NiMoO4-200/NF in 1.0 mol/L KOH with and without 0.5 mol/L urea (a), and anodic LSV curves of NiMoO4-300 /NF for UOR and OER (b).
Fig. 7. LSV curves of NiMoO4-300/NF, NiMoO4/NF, IrO2/NF and NF in 1.0 mol/L KOH electrolyte containing 0.5 mol/L urea (a), and the corresponding Tafel slope (b); Comparison of the potential among catalyst in this work and reported UOR catalysts (c), and Nyquist plots of various electrocatalysts in presence of 0.5 mol/L urea solution with the applied potential of 1.344 V (vs. RHE) (d).
Fig. 9. Digital picture of the polycrystalline silicon solar cell with a 2 V bias driven overall urea electrolysis (a) and the release of bubbles from the cathode and anode via the HER and UOR (b).
|
| [1] | Tong Cui, Xuejun Zhai, Lili Guo, Jing-Qi Chi, Yu Zhang, Jiawei Zhu, Xuemei Sun, Lei Wang. Controllable synthesis of a self-assembled ultralow Ru, Ni-doped Fe2O3 lily as a bifunctional electrocatalyst for large-current-density alkaline seawater electrolysis [J]. Chinese Journal of Catalysis, 2022, 43(8): 2202-2211. |
| [2] | Rui Liu, Chunlei Pei, Xianhua Zhang, Sai Chen, Hongfang Li, Liang Zeng, Rentao Mu, Jinlong Gong. Chemical looping partial oxidation over FeWOx/SiO2 catalysts [J]. Chinese Journal of Catalysis, 2020, 41(7): 1140-1151. |
| [3] | Ya-Qiong Su, Long Zhang, Valery Muravev, Emiel J. M. Hensen. Lattice oxygen activation in transition metal doped ceria [J]. Chinese Journal of Catalysis, 2020, 41(6): 977-984. |
| [4] | Fang Shi, Xuefeng Zhu, Weishen Yang. Micro-nanostructural designs of bifunctional electrocatalysts for metal-air batteries [J]. Chinese Journal of Catalysis, 2020, 41(3): 390-403. |
| [5] | Yibo Guo, Ya-Nan Chen, Huijuan Cui, Zhen Zhou. Bifunctional electrocatalysts for rechargeable Zn-air batteries [J]. Chinese Journal of Catalysis, 2019, 40(9): 1298-1310. |
| [6] | Jingwei Li, Qiuna Zhuang, Peiman Xu, Dawei Zhang, Licheng Wei, Dingsheng Yuan. Three-dimensional lily-like CoNi2S4 as an advanced bifunctional electrocatalyst for hydrogen and oxygen evolution reaction [J]. Chinese Journal of Catalysis, 2018, 39(8): 1403-1410. |
| [7] | Dingkai Chen, Dehua Zhang, Dedong He, Jichang Lu, Liping Zhong, Caiyun Han, Yongming Luo. Relationship between oxygen species and activity/stability in heteroatom (Zr, Y)-doped cerium-based catalysts for catalytic decomposition of CH3SH [J]. Chinese Journal of Catalysis, 2018, 39(12): 1929-1941. |
| [8] | Kun Zhao, Fang He, Zhen Huang, Anqing Zheng, Haibin Li, Zengli Zhao. La1-xSrxFeO3 perovskites as oxygen carriers for the partial oxidation of methane to syngas [J]. Chinese Journal of Catalysis, 2014, 35(7): 1196-1205. |
| Viewed | ||||||
|
Full text |
|
|||||
|
Abstract |
|
|||||