Citation: Haoyuan Qin, Lijing Wang, Yuanhao Tang, Weilong Shi, Changyu Lu. Modulating charge kinetics in CDs/CTF S-scheme hybrids for enhanced H₂O₂ photosynthesis[J]. Chinese Journal of Structural Chemistry, ;2026, 45(4): 100858. doi: 10.1016/j.cjsc.2025.100858 shu

Modulating charge kinetics in CDs/CTF S-scheme hybrids for enhanced H₂O₂ photosynthesis

The demand for green production of hydrogen peroxide (H2O2) has triggered extensive research on photocatalytic synthesis, but there are still problems of low catalytic efficiency. Herein, N, S co-doped carbon dots (N, S-CDs) were anchored on the covalent triazine frames (CTFs) to successfully form the N, S-CDs/CTFs S-scheme heterojunction by a simple hydrothermal method for achieving the optimal photocatalytic H2O2 production rate of 10350 μM g-1 h-1 in pure water. Between the interface of N, S-CDs and CTFs, a five-membered or six-membered nitrogen-containing and sulphur-containing heterocycles linked together to accelerate the electron transfer rate through the conjugation effect. In addition, the S-scheme heterostructure can effectively form an internal electric field (IEF) at the interface, which can promote the separation of electrons and holes. For practical application, the H2O2 produced by the N, S-CDs/CTFs composite photocatalytic system can also be used for photocatalytic antimicrobial treatments, which achieved a bactericidal rate of 86% against E. coli, which is 28% higher than that of pure CTFs. The design displays great potential in the fields of photocatalytic H2O2 generation and photocatalytic antimicrobial, and it also makes the photocatalytic antimicrobial technology more stable and efficient, meanwhile, it also expands a new direction for the application of homogeneous CDs in photocatalysis.
- Covalent triazine frameworks,
- N,S-CDs,
- S-scheme heterojunction,
- H2O2,
- Photocatalysis
1. [1]
  Wanxin Hu , Yan Shi , Junxia Yu , Haiyang Shi , Yingping Huang , Ruiping Li . Engineering 2D/2D FeOOH/BiOCl S-scheme heterojunction toward efficient and stable tetracycline photodegradation. Chinese Journal of Structural Chemistry, 2026, 45(3): 100832-100832. doi: 10.1016/j.cjsc.2025.100832
2. [2]
  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
3. [3]
  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. Chinese Journal of Structural Chemistry, 2023, 42(12): 100204-100204. doi: 10.1016/j.cjsc.2023.100204
4. [4]
  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
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]
  Qiuwen Wang , Linlin Liang , Zexun Li , Jinyu Zhu , Kang Wang , Fuqiang Zhang , Zhijun Ren , Pengfei Wang . Constructing Fe-S bond enhanced charge transfer in α-Fe₂O₃/Cd_0.9Zn_0.1S S-scheme heterojunction for simultaneous oxidation of ciprofloxacin and reduction of Cr(Ⅵ). Chinese Chemical Letters, 2026, 37(6): 112066-. doi: 10.1016/j.cclet.2025.112066
7. [7]
  Jiangli Sun , Chaohui Zhang , Yican Zhang , Chunhong Fu , Ruiheng Liang , Zhongzheng Hu , Ge Song , Minghua Zhou . Ag₃PO₄/g-C₃N₄ S-scheme heterojunction photoanode coupled with natural air diffusion electrode for efficient organic pollutants degradation and H₂O₂ generation. Chinese Chemical Letters, 2026, 37(5): 111839-. doi: 10.1016/j.cclet.2025.111839
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]
  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
10. [10]
  Quanyou Guo , Yue Yang , Tingting Hu , Hongqi Chu , Lijun Liao , Xuepeng Wang , Zhenzi Li , Liping Guo , Wei Zhou . Regulating local electron transfer environment of covalent triazine frameworks through F, N co-modification towards optimized oxygen reduction reaction. Chinese Chemical Letters, 2025, 36(1): 110235-. doi: 10.1016/j.cclet.2024.110235
11. [11]
  Yu Wang , Haiyang Shi , Zihan Chen , Feng Chen , Ping Wang , Xuefei Wang . 具有富电子Pt^δ−壳层的空心AgPt@Pt核壳催化剂：提升光催化H₂O₂生成选择性与活性. Acta Physico-Chimica Sinica, 2025, 41(7): 100081-0. doi: 10.1016/j.actphy.2025.100081
12. [12]
  Mingze AN , Bingbing ZHANG , Zhao YANG , Hao PU , Weijie CHEN , Bin XUE , Sheng WANG , Xiaoyan DING , Lulu SHI . Construction of an S-scheme g-C₃N₄/TiO₂ heterostructure for tetracycline degradation and hydrogen production. Chinese Journal of Inorganic Chemistry, 2026, 42(4): 843-860. doi: 10.11862/CJIC.20250301
13. [13]
  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
14. [14]
  Jiaqi Ma , Lan Li , Yiming Zhang , Jinjie Qian , Xusheng Wang . Covalent organic frameworks: Synthesis, structures, characterizations and progress of photocatalytic reduction of CO2. Chinese Journal of Structural Chemistry, 2024, 43(12): 100466-100466. doi: 10.1016/j.cjsc.2024.100466
15. [15]
  Yu Wang , Changjiang Lu , Danhua Jiao , Fei Wang , Xiaojian Gong , Tianhua Yu , Anping Wang , Chong-Chen Wang . Efficient degradation of tetracycline hydrochloride via high-redox S-scheme MOF-on-MOF heterojunction catalyst. Chinese Chemical Letters, 2026, 37(6): 111979-. doi: 10.1016/j.cclet.2025.111979
16. [16]
  Weixu Li , Yuexin Wang , Lin Li , Xinyi Huang , Mengdi Liu , Bo Gui , Xianjun Lang , Cheng Wang . Promoting energy transfer pathway in porphyrin-based sp2 carbon-conjugated covalent organic frameworks for selective photocatalytic oxidation of sulfide. Chinese Journal of Structural Chemistry, 2024, 43(7): 100299-100299. doi: 10.1016/j.cjsc.2024.100299
17. [17]
  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
18. [18]
  Qiang Zhang , Weiran Gong , Huinan Che , Bin Liu , Yanhui Ao . S doping induces to promoted spatial separation of charge carriers on carbon nitride for efficiently photocatalytic degradation of atrazine. Chinese Journal of Structural Chemistry, 2023, 42(12): 100205-100205. doi: 10.1016/j.cjsc.2023.100205
19. [19]
  Zhou Li , Mengxue Yu , Shixin Chang , Zhibin Huang , Zhenmin Cheng , Weibin Zhang , Sónia A. C. Carabineiro , Zhigao Xu , Kangle Lv . Enhancing the photocatalytic activity of crystalline g-C3N4 towards NO oxidation and CO2 reduction through K+-doping and cyano defect engineering. Chinese Journal of Structural Chemistry, 2026, 45(1): 100698-100698. doi: 10.1016/j.cjsc.2025.100698
20. [20]
  Jiajia Li , Shan Shiang Hii , Xinyuan Zhu , Yanping Yang , Youfu Wang . sp² carbon conjugated covalent organic cage with efficient photocatalysis. Chinese Chemical Letters, 2026, 37(3): 111151-. doi: 10.1016/j.cclet.2025.111151

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(1)
HTML views(0)

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

Modulating charge kinetics in CDs/CTF S-scheme hybrids for enhanced H2O2 photosynthesis

Metrics

通讯作者: 陈斌, bchen63@163.com

Modulating charge kinetics in CDs/CTF S-scheme hybrids for enhanced H₂O₂ photosynthesis