ZnS-g-C3N4/C的合成及光催化降解四环素研究

doi:10.11896/cldb.24100242

材料导报

2026, Vol. 40

Issue (2): 24100242-8 https://doi.org/10.11896/cldb.24100242

无机非金属及其复合材料

ZnS-g-C₃N₄/C的合成及光催化降解四环素研究

吴睿琦^1,2, 刘成宝^1,2,3,*, 陈丰^1,2,3, 邱永斌⁴, 孟宪荣⁵, 陈志刚^1,2,3

1 苏州科技大学江苏省环境功能材料重点实验室,江苏苏州 215009
2 苏州科技大学材料科学与工程学院,江苏苏州 215009
3 苏州科技大学江苏水处理技术与材料协同创新中心,江苏苏州 215009
4 江苏省陶瓷研究所有限公司,江苏宜兴 214221
5 苏州市环境科学研究所,江苏苏州 215007

Synthesis of ZnS-g-C₃N₄/C and Its Photocatalytic Performance for Tetracycline

WU Ruiqi^1,2, LIU Chengbao^1,2,3,*, CHEN Feng^1,2,3, QIU Yongbin⁴, MENG Xianrong⁵, CHEN Zhigang^1,2,3

1 Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
2 School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
3 Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
4 Jiangsu Province Ceramics Research Institute Co., Ltd., Yixing 214221, Jiangsu, China
5 Suzhou Institute of Environmental Science, Suzhou 215007, Jiangsu, China

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摘要本工作以茼蒿茎秆为生物模板、三聚氰胺为氮化碳前驱体,通过热聚合法制备出g-C₃N₄/C。以无水醋酸锌和硫脲为Zn源和S源合成ZnS,通过溶剂热法将ZnS负载于g-C₃N₄/C表面,成功制备出ZnS-g-C₃N₄/C三相复合材料,构建了ZnS和g-C₃N₄之间的异质结构。通过XRD、SEM、TEM、X射线光电子能谱、氮气吸附-脱附测试、稳态荧光光谱等方法对复合材料的相结构、微观形貌、孔结构及光催化性能进行表征。结果表明,三相复合材料形貌均一、结构完整,具有较大比表面积和较多反应活性位点。光催化性能测试中,当g-C₃N₄前驱体和茼蒿茎秆的质量比为3∶1时得到的样品3g-C₃N₄/C具有最佳的光催化性能,光催化降解盐酸四环素效率达到49.9%,是纯相g-C₃N₄的1.76倍。ZnS负载于3g-C₃N₄/C的最佳含量为30%(质量分数,如无特别说明,余同),光催化降解四环素的效率达61.2%,是纯相g-C₃N₄的2.16倍,且经过四次循环后降解率仅降至60.5%,表现出较高的光催化稳定性。

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关键词: g-C₃N₄ 生物模板法光催化四环素复合材料

Abstract: A ternary ZnS-g-C₃N₄/C heterostructured composite was synthesized via a bio-templated thermal polymerization and solvothermal strategy to enhance photocatalytic activity. Carbon-modified g-C₃N₄ (g-C₃N₄/C) was first fabricated using crown daisy stems as biological templates and melamine as the precursor. Subsequently, ZnS nanoparticles derived from zinc acetate anhydrous and thiourea were uniformly deposited onto the g-C₃N₄/C matrix through solvothermal treatment, forming a well-integrated heterojunction structure. Comprehensive characterization via XRD, SEM, TEM, X-ray photoelectron spectroscopy, N₂ adsorption-desorption test, and photoluminescence spectroscopy confirmed the composite’s homogeneous morphology, structural integrity, high specific surface area, and abundant active sites. The optimized g-C₃N₄/C sample with a 3∶1 mass ratio of precursor to bio-template exhibited a tetracycline hydrochloride degradation efficiency of 49.9% under visible light, outperforming pristine g-C₃N₄ by 1.76-fold. Further enhancement was achieved by incorporating 30wt% ZnS, yielding a tetracycline degradation efficiency of 61.2% (1.16 times higher than pure g-C₃N₄) with minimal activity loss (60.5% retention after four cycles), demonstrating exceptional stability. The improved performance could be attributed to synergistic effects between the heterojunction-mediated charge separation and carbon-induced electron transfer pathways.

Key words: g-C₃N₄ biological template method photocatalysis tetracycline composite material

出版日期: 2026-01-25 发布日期: 2026-01-27

ZTFLH:

TB333

基金资助: 江苏省自然科学基金(BK20180103;BK20180971);苏州市科技发展计划(SS202036)

通讯作者: *刘成宝,博士,苏州科技大学材料科学与工程学院副教授、硕士研究生导师。主要研究二维基催化材料、量子点材料和环境功能材料等的结构设计、合成及其环境和能源性能评价。Lcb@mail.usts.edu.cn

作者简介: 吴睿琦,苏州科技大学材料科学与工程学院硕士研究生,在刘成宝副教授的指导下开展环境和能源材料的设计合成及其性能评价的研究。

引用本文:

吴睿琦, 刘成宝, 陈丰, 邱永斌, 孟宪荣, 陈志刚. ZnS-g-C₃N₄/C的合成及光催化降解四环素研究[J]. 材料导报, 2026, 40(2): 24100242-8.
WU Ruiqi, LIU Chengbao, CHEN Feng, QIU Yongbin, MENG Xianrong, CHEN Zhigang. Synthesis of ZnS-g-C₃N₄/C and Its Photocatalytic Performance for Tetracycline. Materials Reports, 2026, 40(2): 24100242-8.

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https://www.mater-rep.com/CN/10.11896/cldb.24100242 或 https://www.mater-rep.com/CN/Y2026/V40/I2/24100242

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