Chinese Journal of Catalysis ›› 2021, Vol. 42 ›› Issue (5): 762-771.DOI: 10.1016/S1872-2067(20)63700-7
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Yinyin Lia, Qiannan Wua, Qijing Bua, Kai Zhanga, Yanhong Lina, Dejun Wanga, Xiaoxin Zoub, Tengfeng Xiea,*()
Received:
2020-05-24
Accepted:
2020-05-24
Online:
2021-05-18
Published:
2021-01-29
Contact:
Tengfeng Xie
About author:
* E-mail: xietf@jlu.edu.cnSupported by:
Yinyin Li, Qiannan Wu, Qijing Bu, Kai Zhang, Yanhong Lin, Dejun Wang, Xiaoxin Zou, Tengfeng Xie. An effective CdS/Ti-Fe2O3 heterojunction photoanode: Analyzing Z-scheme charge-transfer mechanism for enhanced photoelectrochemical water-oxidation activity[J]. Chinese Journal of Catalysis, 2021, 42(5): 762-771.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(20)63700-7
Fig. 1. Top-view SEM images of Ti-Fe2O3 (a) and 25CdS/Ti-Fe2O3 (b); (c) HRTEM image of 25CdS/Ti-Fe2O3; (d) EDS elemental mapping of Fe, O, Cd, and S in 25CdS/Ti-Fe2O3.
Fig. 3. (a) SPV signal of Ti-Fe2O3 and CdS/Ti-Fe2O3 photoanodes. The inset shows the schematic of SPV measurements. (b) TPV signal of Ti-Fe2O3 and CdS/Ti-Fe2O3 photoanodes. The inset shows the schematic of TPV measurements.
Fig. 4. (a) WF mapping measurements of Ti-Fe2O3 and CdS; (b) SPV of Ti-Fe2O3 and 25CdS/Ti-Fe2O3; (c) TPV of Ti-Fe2O3 and 25CdS/Ti-Fe2O3; (d) SPV of Ti-Fe2O3 and Ti-Fe2O3/25CdS.
Fig. 5. (a) TPV signal of Ti-Fe2O3/25CdS sample with FTO substrate side under 405-nm laser irradiation and FTO electrode side under 532-nm laser illumination; (b) TPV signal of Ti-Fe2O3/25CdS sample with FTO electrode side under 405-nm laser illumination and FTO substrate side under 532-nm laser illumination.
Fig. 7. (a) Injection efficiencies of Ti-Fe2O3 and CdS/Ti-Fe2O3 photoanodes; (b) Charge-accumulation densities of Ti-Fe2O3 and CdS/Ti-Fe2O3 photoanodes; (c) IPCEs at 1.23 V vs. RHE; (d) PEC stability test of the 25CdS/Ti-Fe2O3 photoanode at 1.23 V vs. RHE.
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