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材料导报  2025, Vol. 39 Issue (19): 24080035-6    https://doi.org/10.11896/cldb.24080035
  无机非金属及其复合材料 |
广谱响应Cu2(OH)2CO3/g-C3N4异质结的构建及其光催化四环素的降解:降解途径及反应机理
梁红玉1,*, 许佳智1, 李政1, 陆光2, 王斌3, 李桐宇1, 刘玉佳1
1 辽宁石油化工大学环境与安全工程学院,辽宁 抚顺 113001
2 辽宁石油化工大学土木工程学院,辽宁 抚顺 113001
3 上海蓝滨石化设备有限责任公司,上海 201518
Construction of Wide-spectrum-driven Cu2(OH)2CO3/g-C3N4 Heterojunction and Its Improved Photocatalysis Towards Tetracycline Degradation: Degradation Pathways and Mechanism
LIANG Hongyu1,*, XU Jiazhi1, LI Zheng1, LU Guang2, WANG Bin3, LI Tongyu1, LIU Yujia1
1 School of Environmental and Safety Engineering, Liaoning Petrochemical University, Fushun 113001, Liaoning, China
2 School of Civil Engineering, Liaoning Petrochemical University, Fushun 113001, Liaoning, China
3 Lanpec Technologies Limited, Shanghai 201518, China
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摘要 本工作设计了一款不含贵金属、宽光谱响应的异质结催化剂Cu2(OH)2CO3/石墨相氮化碳(Cu/g-C3N4),并考查了其对四环素(TC)的光催化降解性能。采用TEM、SEM、XRD、紫外-可见光谱、荧光光谱等分析手段对产物形貌、结构、光学性质等进行了表征。实验结果表明,引入的组分Cu2(OH)2CO3一方面作为可见光和近红外光吸收材料赋予异质结对模拟太阳光的广谱响应性,另一方面与g-C3N4构成“Z型”异质结从而促进了光生电子-空穴的有效分离,提高了光能-化学能转化效率。Cu/g-C3N4 (1∶4)异质结对TC降解的光催化性能最佳,一级反应速率常数达到0.017 6 min-1,分别是Cu2(OH)2CO3和g-C3N4的4倍和3.1倍,且具有优异的光催化稳定性。此外,本工作还提出了三种Cu/g-C3N4 (1∶4)异质结光催化降解TC的可能路径。
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梁红玉
许佳智
李政
陆光
王斌
李桐宇
刘玉佳
关键词:  石墨相氮化碳  碱式碳酸铜  异质结  四环素  光催化    
Abstract: Awide-spectrum-driven Cu2(OH)2CO3/g-C3N4(Cu/g-C3N4) heterojunction catalyst was designed and the photocatalytic tetracycline degradation was investigated in the present work. The morphologies, crystal phases, optical property and so on of the as-prepared photocatalysts were characterized by means of TEM, SEM, XRD, UV-visible light spectroscopy, photoluminescence spectroscopy, etc. Experimental results indicated that the component Cu2(OH)2CO3 gave heterojunction a broad spectrum response to simulated sunlight due to its absorption of visible and near infrared light, and the consist of Z-scheme heterojunction with g-C3N4 enhanced photochemical energy conversion efficiency. Particularly, Cu/g-C3N4 (1∶4) heterojunction showed the best photocatalytic activity towards TC degradation, including an one order reaction rate constant of 0.017 6 min-1, which was 3 and 2.1 times higher than that of neat Cu2(OH)2CO3 and g-C3N4, as well as perfect photocatalytic stability. Moreover, this work hypothesized three possible photocatalytic degradation pathways of TC over Cu/g-C3N4 (1∶4) heterojunction.
Key words:  g-C3N4    Cu2(OH)2CO3    heterojunction    tetracycline    photocatalysis
出版日期:  2025-10-10      发布日期:  2025-09-24
ZTFLH:  O641  
  O649  
基金资助: 辽宁省教育厅高校基本科研项目(LJKMZ20220722);抚顺市“抚顺英才计划”(FSYC202107006)
通讯作者:  *梁红玉,博士,辽宁石油化工大学环境与安全工程学院副教授、硕士研究生导师。目前主要从事纳米复合材料、环境污染控制等方面的研究。lianghongyu163@163.com   
引用本文:    
梁红玉, 许佳智, 李政, 陆光, 王斌, 李桐宇, 刘玉佳. 广谱响应Cu2(OH)2CO3/g-C3N4异质结的构建及其光催化四环素的降解:降解途径及反应机理[J]. 材料导报, 2025, 39(19): 24080035-6.
LIANG Hongyu, XU Jiazhi, LI Zheng, LU Guang, WANG Bin, LI Tongyu, LIU Yujia. Construction of Wide-spectrum-driven Cu2(OH)2CO3/g-C3N4 Heterojunction and Its Improved Photocatalysis Towards Tetracycline Degradation: Degradation Pathways and Mechanism. Materials Reports, 2025, 39(19): 24080035-6.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24080035  或          https://www.mater-rep.com/CN/Y2025/V39/I19/24080035
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