硫化镉修饰氮化碳及其光催化性能研究
Research on Cadmium Sulfide-Modified Carbon Nitride and Its Photocatalytic Performance
DOI: 10.12677/ms.2026.1610186, PDF,    科研立项经费支持
作者: 苏洋洋, 黄小娟, 何艳玲, 陈 鹭*：宁德师范学院新能源与材料学院，福建 宁德
关键词: 硫化镉；氮化碳；光催化；罗丹明-B降解；Cadmium Sulfide； Carbon Nitride； Photocatalysis； Rhodamine B Degradation
摘要: 石墨相氮化碳(CN)具备良好的半导体催化活性，它因其出色的电荷转移效率、高灵敏度的可见光吸收率和卓越的化学稳定性，使它成为当今最具潜力的催化剂之一。但光生载流子复合率低、带隙较宽限制了其光催化性能。本实验通过原位沉积法制备CdS/CN异质结光催化剂对CN进行改性。利用XRD、FT-IR、DRS、电化学等手段对其进行表征分析。并以Rh B为降解底物，在模拟太阳光下分别考察各催化剂样品的光催化降解活性。结果表明，负载CdS后CN对罗丹明-B的降解率增大，其中7% CdS/CN降解效果最好，降解率为87.6%，对比单一的CdS和CN (降解率分别为26.9%和78.3%)明显提高。捕获剂测试结果表明超氧自由基(·O2−)是主要活性物种。
Abstract: Graphitic carbon nitride (CN) possesses good semiconducting catalytic activity, and has become one of the most promising catalysts due to its excellent charge transfer efficiency, high sensitivity to visible light absorption, and outstanding chemical stability. However, the low photogenerated carrier recombination rate and relatively wide bandgap limit its photocatalytic performance. In this study, CdS/CN heterojunction photocatalysts were prepared via an in situ deposition method to modify CN. The as-prepared samples were characterized by XRD, FT-IR, DRS, electrochemical measurements, and other techniques. The photocatalytic degradation activity of each catalyst sample was evaluated under simulated solar light irradiation using Rhodamine B (Rh B) as the degradation substrate. The results showed that the degradation rate of Rh B over CN was enhanced after CdS loading. Among them, the 7% CdS/CN composite exhibited the best degradation performance, achieving a degradation rate of 87.6%, which was significantly higher than that of pristine CdS and CN (26.9% and 78.3%, respectively). Radical trapping experiments revealed that superoxide radicals (·O2−) were the main active species.
文章引用：苏洋洋, 黄小娟, 何艳玲, 陈鹭. 硫化镉修饰氮化碳及其光催化性能研究[J]. 材料科学, 2026, 16(10): 17-24. https://doi.org/10.12677/ms.2026.1610186

参考文献

[1] Liu, Y., Yin, W., Lin, Q., Li, Z., Zhong, W. and Fang, B. (2023) Nitrogen Vacancies-Engineered Graphitic Carbon Nitride Nanosheets for Boosting Photocatalytic H2 Production. Applied Surface Science, 640, Article ID: 158386.
https://doi.org/10.1016/j.apsusc.2023.158386
[2] Guo, H., Dong, Z., Yang, Y., Sui, L., Wang, W., Liang, C., et al. (2025) Polarized Electric Field-Mediated Graphitic Carbon Nitride-Based S-Scheme Heterostructure for Efficient Photocatalytic Removal of Bisphenol A. Applied Surface Science, 682, Article ID: 161739.
https://doi.org/10.1016/j.apsusc.2024.161739
[3] Ghosh, S., Das, P.S., Biswas, M., Samajdar, S. and Mukhopadhyay, J. (2024) Z-Scheme Ferrite Nanoparticle/Graphite Carbon Nitride Nanosheet Heterojunctions for Photocatalytic Hydrogen Evolution. International Journal of Hydrogen Energy, 107, 586-596.
https://doi.org/10.1016/j.ijhydene.2024.06.167
[4] Chen, L., Zhang, L., Xia, Y., Huang, R., Liang, R., Yan, G., et al. (2024) Thermal Exfoliation and Phosphorus Doping in Graphitic Carbon Nitride for Efficient Photocatalytic Hydrogen Production. Molecules, 29, Article No. 3666.
https://doi.org/10.3390/molecules29153666
[5] Wu, M., Gong, Y., Nie, T., Zhang, J., Wang, R., Wang, H., et al. (2019) Template-Free Synthesis of Nanocage-Like G-C3N4 with High Surface Area and Nitrogen Defects for Enhanced Photocatalytic H2 Activity. Journal of Materials Chemistry A, 7, 5324-5332.
https://doi.org/10.1039/c8ta12076e
[6] Zhang, X., Xia, X. and Yang, P. (2024) Nanoarchitectonics with W18O49 Nanobelts and B-Doped G-C3N4 Nanosheets towards NO and 4-Nitrophenol Conversion. Environmental Science: Nano, 11, 4186-4195.
https://doi.org/10.1039/d4en00399c
[7] Yue, W., Xu, Z., Tayyab, M., Wang, L., Ye, Z. and Zhang, J. (2024) Schottky Junction Enhanced H2 Evolution for Graphitic Carbon Nitride-Nis Composite Photocatalysts. Journal of Colloid and Interface Science, 657, 133-141.
https://doi.org/10.1016/j.jcis.2023.11.092
[8] Zhao, C., Li, Q., Xie, Y., Zhang, L., Xiao, X., Wang, D., et al. (2020) Three-Dimensional Assemblies of Carbon Nitride Tubes as Nanoreactors for Enhanced Photocatalytic Hydrogen Production. Journal of Materials Chemistry A, 8, 305-312.
https://doi.org/10.1039/c9ta10688j
[9] Ji, Y., Luan, G., Wei, J., Bao, L., Cui, M., Tian, Z., et al. (2024) Zinc Indium Sulfide Coupling with Graphitic Carbon Nitride Containing Non-Intrinsic Oxygen Vacancies to Form Z-Scheme Heterojunction for Boosting Photodegradation of Tetracycline. Journal of Environmental Chemical Engineering, 12, Article ID: 113938.
https://doi.org/10.1016/j.jece.2024.113938
[10] Zhang, H., Zhu, Y., Sun, Y., Khan, J., Liu, H., Xiao, J., et al. (2023) Synergistic Sulfur Doping and Nitrogen Vacancies in Porous Graphite Carbon Nitride for Enhanced Photocatalytic H2O2 Production. Journal of Environmental Chemical Engineering, 11, Article ID: 111122.
https://doi.org/10.1016/j.jece.2023.111122

为你推荐