Citation: Kaihui Huang, Boning Feng, Xinghua Wen, Lei Hao, Difa Xu, Guijie Liang, Rongchen Shen, Xin Li. Effective photocatalytic hydrogen evolution by Ti3C2-modified CdS synergized with N-doped C-coated Cu2O in S-scheme heterojunctions[J]. Chinese Journal of Structural Chemistry, ;2023, 42(12): 100204. doi: 10.1016/j.cjsc.2023.100204 shu

Effective photocatalytic hydrogen evolution by Ti3C2-modified CdS synergized with N-doped C-coated Cu2O in S-scheme heterojunctions

Photocatalytic hydrogen evolution through water splitting holds tremendous promise for converting solar energy into a clean and renewable fuel source. However, the efficiency of photocatalysis is often hindered by poor light absorption, insufficient charge separation, and slow reaction kinetics of the photocatalysts. In this study, we designed and synthesized a novel S-scheme heterojunction comprising Ti3C2 MXene, CdS nanorods, and nitrogen-doped carbon coated Cu2O (Cu2O@NC) core-shell nanoparticles. Ti3C2 MXene as a cocatalyst enhances the light absorption and charge transfer of CdS nanorods. Simultaneously, the core-shell Cu2O@NC nanoparticles establish a pathway for transferring photogenerated electrons and create a favorable band alignment for efficient hydrogen evolution. The synergistic effects of Ti3C2 MXene and Cu2O@NC on CdS nanorods result in multiple charge transfer channels and improved photocatalytic performance. The optimal hydrogen evolution rate of the Ti3C2-CdS-Cu2O@NC S-scheme heterojunction photocatalyst is 7.4 times higher than that of pure CdS. Experimental techniques and DFT calculations were employed to explore the structure, morphology, optical properties, charge dynamics, and band structure of the heterojunction. The results revealed that the S-scheme mechanism effectively suppresses the recombination of photogenerated carriers and facilitates the separation and migration of photogenerated electrons and holes to the reaction sites. Furthermore, Ti3C2 MXene provides abundant active sites essential for accelerating the surface H2-evolution reaction kinetics. The Cu2O@NC core-shell nanoparticles with a large surface area and high stability are closely adhered to CdS nanorods and establish an S-scheme internal electric field with CdS nanorods to drive charge separation. This investigation provides valuable insights into the rational design of CdS-based photocatalysts, enabling efficient hydrogen production by harnessing the robust kinetic driving force provided by the S-scheme heterojunctions.
- Photocatalytic hydrogen evolution,
- Cu2O@NC,
- CdS,
- S-scheme heterojunction,
- Ti3C2 MXene cocatalyst
1. [1]
  Fei Jin , Bolin Yang , Xuanpu Wang , Teng Li , Noritatsu Tsubaki , Zhiliang Jin . Facilitating efficient photocatalytic hydrogen evolution via enhanced carrier migration at MOF-on-MOF S-scheme heterojunction interfaces through a graphdiyne (CnH2n-2) electron transport layer. Chinese Journal of Structural Chemistry, 2023, 42(12): 100198-100198. doi: 10.1016/j.cjsc.2023.100198
2. [2]
  Linping Li , Junhui Su , Yanping Qiu , Yangqin Gao , Ning Li , Lei Ge . Design and fabrication of ternary Au/Co3O4/ZnCdS spherical composite photocatalyst for facilitating efficient photocatalytic hydrogen production. Chinese Journal of Structural Chemistry, 2024, 43(12): 100472-100472. doi: 10.1016/j.cjsc.2024.100472
3. [3]
  Yihu Ke , Shuai Wang , Fei Jin , Guangbo Liu , Zhiliang Jin , Noritatsu Tsubaki . Charge transfer optimization: Role of Cu-graphdiyne/NiCoMoO4 S-scheme heterojunction and Ohmic junction. Chinese Journal of Structural Chemistry, 2024, 43(12): 100458-100458. doi: 10.1016/j.cjsc.2024.100458
4. [4]
  Qi HUANG , Youyi WANG , Zhujian MAO , Zhonghui YE , Weihan CHEN , Jui-yeh RAU , Jian HUANG . Enhanced photocatalytic tetracycline degradation via 2D CdS/Ti₃AlC₂ MAX heterostructure. Chinese Journal of Inorganic Chemistry, 2025, 41(11): 2385-2398. doi: 10.11862/CJIC.20250159
5. [5]
  Zhi Zhu , Xiaohan Xing , Qi Qi , Wenjing Shen , Hongyue Wu , Dongyi Li , Binrong Li , Jialin Liang , Xu Tang , Jun Zhao , Hongping Li , Pengwei Huo . Fabrication of graphene modified CeO2/g-C3N4 heterostructures for photocatalytic degradation of organic pollutants. Chinese Journal of Structural Chemistry, 2023, 42(12): 100194-100194. doi: 10.1016/j.cjsc.2023.100194
6. [6]
  Haiyan Yin , Abdusalam Ablez , Zhuangzhuang Wang , Weian Li , Yanqi Wang , Qianqian Hu , Xiaoying Huang . Novel open-framework chalcogenide photocatalysts: Cobalt cocatalyst valence state modulating critical charge transfer pathways towards high-efficiency hydrogen evolution. Chinese Journal of Structural Chemistry, 2025, 44(4): 100560-100560. doi: 10.1016/j.cjsc.2025.100560
7. [7]
  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
8. [8]
  Zhijie Zhang , Xun Li , Huiling Tang , Junhao Wu , Chunxia Yao , Kui Li . Cs₂CuBr₄ perovskite quantum dots confined in mesoporous CuO framework as a p-n type S-scheme heterojunction for efficient CO₂ photoconversion. Chinese Chemical Letters, 2024, 35(11): 109700-. doi: 10.1016/j.cclet.2024.109700
9. [9]
  Kaihui Huang , Dejun Chen , Xin Zhang , Rongchen Shen , Peng Zhang , Difa Xu , Xin Li . Constructing Covalent Triazine Frameworks/N-Doped Carbon-Coated Cu₂O S-Scheme Heterojunctions for Boosting Photocatalytic Hydrogen Production. Acta Physico-Chimica Sinica, 2024, 40(12): 2407020-0. doi: 10.3866/PKU.WHXB202407020
10. [10]
  Tao Zhou , Xu Han , Wangwang Shen , Fang Ji , Menglong Liu , Yingyu Song , Wen-Wen He . Construction of NiS/CTF heterojunction photocatalyst with an outstanding photocatalytic hydrogen evolution performance. Chinese Chemical Letters, 2025, 36(11): 110415-. doi: 10.1016/j.cclet.2024.110415
11. [11]
  Jinhui Jiang , Jiaqi Sun , Yongyi Chen , Lei Zhang , Pengyu Dong . W₁₈O₄₉/Al-doped SrTiO₃ S-scheme heterojunction aided by the LSPR effect for full-spectrum solar light-driven photocatalytic hydrogen evolution. Acta Physico-Chimica Sinica, 2025, 41(11): 100145-0. doi: 10.1016/j.actphy.2025.100145
12. [12]
  Yan-Ling Li , Yue Xu , Chen-Hong Wang , Rui Wang , Shuang-Quan Zang . Dye-stabilized atomically precise copper clusters for enhanced photocatalytic hydrogen evolution. Chinese Chemical Letters, 2025, 36(10): 111256-. doi: 10.1016/j.cclet.2025.111256
13. [13]
  Xingyan Liu , Kaili Wu , Yacen Tang , Ning Qi , Yumeng Zhang , Youzhou He , Min Fu , Yanhui Ao . Ti₃C₂ MXene-derived TiO₂@C attached on Bi₂WO₆ with oxygen vacancies to fabricate S-scheme heterojunction for photocatalytic antibiotics degradation and NO removal. Chinese Chemical Letters, 2025, 36(11): 110882-. doi: 10.1016/j.cclet.2025.110882
14. [14]
  Mian Wei , Chang Cheng , Bowen He , Bei Cheng , Kezhen Qi , Chuanbiao Bie . Inorganic-organic CdS/YBTPy S-scheme photocatalyst for efficient hydrogen production and its mechanism. Acta Physico-Chimica Sinica, 2025, 41(12): 100158-0. doi: 10.1016/j.actphy.2025.100158
15. [15]
  Yiting Huo , Xin Zhou , Feifan Zhao , Chenbin Ai , Zhen Wu , Zhidong Chang , Bicheng Zhu . Boosting photocatalytic CO₂ methanation through TiO₂/CdS S-scheme heterojunction and fs-TAS mechanism study. Acta Physico-Chimica Sinica, 2025, 41(11): 100148-0. doi: 10.1016/j.actphy.2025.100148
16. [16]
  Bicheng Zhu , Jingsan Xu . S-scheme heterojunction photocatalyst for H2 evolution coupled with organic oxidation. Chinese Journal of Structural Chemistry, 2024, 43(8): 100327-100327. doi: 10.1016/j.cjsc.2024.100327
17. [17]
  Zheng Liu , Yuqing Bian , Graham Dawson , Jiawei Zhu , Kai Dai . Rational constructing of Zn_0.5Cd_0.5S-diethylenetriamine/g-C₃N₄ S-scheme heterojunction with enhanced photocatalytic H₂O₂ production. Chinese Chemical Letters, 2025, 36(9): 111272-. doi: 10.1016/j.cclet.2025.111272
18. [18]
  Shijie Li , Ke Rong , Xiaoqin Wang , Chuqi Shen , Fang Yang , Qinghong Zhang . Design of Carbon Quantum Dots/CdS/Ta₃N₅ S-scheme Heterojunction Nanofibers for Efficient Photocatalytic Antibiotic Removal. Acta Physico-Chimica Sinica, 2024, 40(12): 2403005-0. doi: 10.3866/PKU.WHXB202403005
19. [19]
  Hongrui Zhang , Miaoying Cui , Yongjie Lv , Yongfang Rao , Yu Huang . A short review on research progress of ZnIn₂S₄-based S-scheme heterojunction: Improvement strategies. Chinese Chemical Letters, 2025, 36(4): 110108-. doi: 10.1016/j.cclet.2024.110108
20. [20]
  Xibao Li , Yiyang Wan , Fang Deng , Yingtang Zhou , Pinghua Chen , Fan Dong , Jizhou Jiang . Advances in Z-scheme and S-scheme heterojunctions for photocatalytic and photoelectrocatalytic H₂O₂ production. Chinese Chemical Letters, 2025, 36(10): 111418-. doi: 10.1016/j.cclet.2025.111418

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(659)
HTML views(4)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142