Citation: Kai Han, Guohui Dong, Ishaaq Saeed, Tingting Dong, Chenyang Xiao. Boosting bulk charge transport of CuWO4 photoanodes via Cs doping for solar water oxidation[J]. Chinese Journal of Structural Chemistry, ;2024, 43(2): 100207. doi: 10.1016/j.cjsc.2023.100207 shu

Boosting bulk charge transport of CuWO4 photoanodes via Cs doping for solar water oxidation

Copper tungstate (CuWO4) is a promising photoanode for photoelectrochemical (PEC) water splitting due to its appropriate energy band position and broad light absorption range. However, the inherent unfilled 3d atomic orbital of Cu acts as a natural electron-hole recombination site, significantly constraining the PEC performance of CuWO4. Herein, Cs atoms with complete atomic orbitals are doped into CuWO4 in order to obtain better bulk charge separation capability. As a result, the photocurrent of Cs@CuWO4 increases from 0.57 to 0.99 mA cm−2 compared to CuWO4 at 1.23 V vs. reversible hydrogen electrode (RHE) under AM 1.5G illumination, as well as the bulk charge transfer efficiencies rising from 13.5% to 19.3%. In addition, density of states (DOS) calculations further prove that the introduction of Cs atoms effectively suppresses the contribution of Cu 3d orbitals at the Fermi level. This work offers a valuable reference for the advancement of CuWO4 as the next-generation PEC photoanode material.
- Photoanode,
- Water splitting,
- Photoelectrochemical,
- Charge separation
1. [1]
  Lina Wang , Hairu Wang , Qian Bu , Qiong Mei , Junbo Zhong , Bo Bai , Qizhao Wang . Al-O bridged NiFeO_x/BiVO₄ photoanode for exceptional photoelectrochemical water splitting. Chinese Chemical Letters, 2025, 36(4): 110139-. doi: 10.1016/j.cclet.2024.110139
2. [2]
  Hongye Bai , Lihao Yu , Jinfu Xu , Xuliang Pang , Yajie Bai , Jianguo Cui , Weiqiang Fan . Controllable Decoration of Ni-MOF on TiO2: Understanding the Role of Coordination State on Photoelectrochemical Performance. Chinese Journal of Structural Chemistry, 2023, 42(10): 100096-100096. doi: 10.1016/j.cjsc.2023.100096
3. [3]
  Zhen Shi , Wei Jin , Yuhang Sun , Xu Li , Liang Mao , Xiaoyan Cai , Zaizhu Lou . Interface charge separation in Cu2CoSnS4/ZnIn2S4 heterojunction for boosting photocatalytic hydrogen production. Chinese Journal of Structural Chemistry, 2023, 42(12): 100201-100201. doi: 10.1016/j.cjsc.2023.100201
4. [4]
  Wenhao Chen , Jian Du , Hanbin Zhang , Hancheng Wang , Kaicheng Xu , Zhujun Gao , Jiaming Tong , Jin Wang , Junjun Xue , Ting Zhi , Longlu Wang . Surface treatment of GaN nanowires for enhanced photoelectrochemical water-splitting. Chinese Chemical Letters, 2024, 35(9): 109168-. doi: 10.1016/j.cclet.2023.109168
5. [5]
  Congzhao Dong , Yajun Zhang , Yingpu Bi , Zeyu Li , Yong Ding . Band structure engineering of phosphorus doped Ta₃N₅ for efficient photoelectrochemical water oxidation. Chinese Chemical Letters, 2025, 36(12): 111449-. doi: 10.1016/j.cclet.2025.111449
6. [6]
  Tianli Hui , Tao Zheng , Xiaoluo Cheng , Tonghui Li , Rui Zhang , Xianghai Meng , Haiyan Liu , Zhichang Liu , Chunming Xu . A review of plasma treatment on nano-microstructure of electrochemical water splitting catalysts. Chinese Journal of Structural Chemistry, 2025, 44(3): 100520-100520. doi: 10.1016/j.cjsc.2025.100520
7. [7]
  Chunru Liu , Ligang Feng . Advances in anode catalysts of methanol-assisted water-splitting reactions for hydrogen generation. Chinese Journal of Structural Chemistry, 2023, 42(10): 100136-100136. doi: 10.1016/j.cjsc.2023.100136
8. [8]
  Liwei Hou , Xianyun Peng , Siliu Lyu , Zhongjian Li , Bin Yang , Qinghua Zhang , Qinggang He , Lecheng Lei , Yang Hou . Advancements in MXene-based nanohybrids for electrochemical water splitting. Chinese Chemical Letters, 2025, 36(6): 110392-. doi: 10.1016/j.cclet.2024.110392
9. [9]
  Xinxin Zhang , Zhijian Liang , Xu Zhang , Qian Guo , Ying Xie , Lei Wang , Honggang Fu . Electronic modulation of VN on Co_5.47N as tri-functional electrocatalyst for constructing zinc-air battery to drive water splitting. Chinese Chemical Letters, 2025, 36(5): 109935-. doi: 10.1016/j.cclet.2024.109935
10. [10]
  Entian Cui , Yulian Lu , Zhaoxia Li , Zhilei Chen , Chengyan Ge , Jizhou Jiang . Interfacial B-O bonding modulated S-scheme B-doped N-deficient C₃N₄/O-doped-C₃N₅ for efficient photocatalytic overall water splitting. Chinese Chemical Letters, 2025, 36(1): 110288-. doi: 10.1016/j.cclet.2024.110288
11. [11]
  Hualin Jiang , Wenxi Ye , Huitao Zhen , Xubiao Luo , Vyacheslav Fominski , Long Ye , Pinghua Chen . Novel 3D-on-2D g-C₃N₄/AgI._x._y heterojunction photocatalyst for simultaneous and stoichiometric production of H₂ and H₂O₂ from water splitting under visible light. Chinese Chemical Letters, 2025, 36(2): 109984-. doi: 10.1016/j.cclet.2024.109984
12. [12]
  Jihong Li , Zhenying Feng , Xiaokun Sheng , Keren Chen , Jingming Ran , Luyao Li , Lei Shi , Tongzhou Wang , Yida Deng . Square-meter-scale nickel-based anode: Facile room-temperature construction for efficient industrial water electrolysis. Chinese Chemical Letters, 2025, 36(11): 111652-. doi: 10.1016/j.cclet.2025.111652
13. [13]
  Jiqing Liu , Qi Dang , Liting Wang , Dejin Wang , Liang Tang . Applications of flexible electrochemical electrodes in wastewater treatment: A review. Chinese Chemical Letters, 2024, 35(8): 109277-. doi: 10.1016/j.cclet.2023.109277
14. [14]
  Linlu Bai , Wensen Li , Xiaoyu Chu , Haochun Yin , Yang Qu , Ekaterina Kozlova , Zhao-Di Yang , Liqiang Jing . Effects of nanosized Au on the interface of zinc phthalocyanine/TiO₂ for CO₂ photoreduction. Chinese Chemical Letters, 2025, 36(2): 109931-. doi: 10.1016/j.cclet.2024.109931
15. [15]
  Xiao Liu , Hangqi Liu , Qian Wang , Dandan Zheng , Sibo Wang , Masakazu Anpo , Guigang Zhang . Rational synthesis of poly(heptazine imides) nanorod in ternary LiCl/NaCl/KCl for visible light hydrogen production. Chinese Chemical Letters, 2025, 36(12): 111621-. doi: 10.1016/j.cclet.2025.111621
16. [16]
  Qinghong Pan , Huafang Zhang , Qiaoling Liu , Donghong Huang , Da-Peng Yang , Tianjia Jiang , Shuyang Sun , Xiangrong Chen . A self-powered cathodic molecular imprinting ultrasensitive photoelectrochemical tetracycline sensor via ZnO/C photoanode signal amplification. Chinese Chemical Letters, 2025, 36(1): 110169-. doi: 10.1016/j.cclet.2024.110169
17. [17]
  Shengdong Sun , Cheng Wang , Shikuo Li . Interfacial channel design on the charge migration for photoelectrochemical applications. Chinese Journal of Structural Chemistry, 2024, 43(12): 100398-100398. doi: 10.1016/j.cjsc.2024.100398
18. [18]
  Hailang Deng , Abebe Reda Woldu , Abdul Qayum , Zanling Huang , Weiwei Zhu , Xiang Peng , Paul K. Chu , Liangsheng Hu . Killing two birds with one stone: Enhancing the photoelectrochemical water splitting activity and stability of BiVO₄ by Fe ions association. Chinese Chemical Letters, 2024, 35(12): 109892-. doi: 10.1016/j.cclet.2024.109892
19. [19]
  Jingwei Huang , Zhanghao Yang , Xiaoli Yuan , Lei Wang , Houde She , Qizhao Wang . Enhancing the separation and transport efficiency of carriers in BiVO₄ composite photoanode through the utilization of BNQDs as hole extractors. Chinese Chemical Letters, 2025, 36(12): 111062-. doi: 10.1016/j.cclet.2025.111062
20. [20]
  Jiaxin Su , Jiaqi Zhang , Shuming Chai , Yankun Wang , Sibo Wang , Yuanxing Fang . Optimizing Poly(heptazine imide) Photoanodes Using Binary Molten Salt Synthesis for Water Oxidation Reaction. Acta Physico-Chimica Sinica, 2024, 40(12): 2408012-0. doi: 10.3866/PKU.WHXB202408012

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