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材料导报  2024, Vol. 38 Issue (4): 22080014-7    https://doi.org/10.11896/cldb.22080014
  无机非金属及其复合材料 |
不同形貌g-C3N4光催化剂的制备及性能
刘月琴1, 王海涛1, 郭建峰2, 赵晓旭1,*, 常娜2,*
1 天津工业大学环境科学与工程学院,天津 300387
2 天津工业大学化学工程与技术学院,天津 300387
Preparation and Performance of g-C3N4 Photocatalysts with Different Morphology
LIU Yueqin1, WANG Haitao1, GUO Jianfeng2, ZHAO Xiaoxu1,*, CHANG Na2,*
1 School of Environmental Science and Technology, Tiangong University, Tianjin 300387, China
2 School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, China
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摘要 本工作制备了四种形貌的g-C3N4光催化剂,分别为不规则疏松片状g-C3N4-4、不均匀致密颗粒状g-C3N4-8、管状g-C3N4-24以及不规则管状g-C3N4-32。XRD和XPS测试结果证明四种g-C3N4光催化剂的成功制备。光电性能测试结果表明,中空管状g-C3N4-24具有良好的可见光响应、最小的阻抗及最佳的光电流响应,光生电子和空穴的分离效果最好。以碱性品红 (Fuchsin basic) 为模拟污染物,考察g-C3N4-24光催化剂的光催化降解性能,结果表明,在可见光的条件下,90 min内其对碱性品红的降解效果能达到86.7%。最后根据活性物种捕获实验对g-C3N4-24光催化剂的光催化机理进行研究,发现·O2-、h+和·OH均为碱性品红降解过程中的活性物质,其中·O2-为最主要的活性物种。
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刘月琴
王海涛
郭建峰
赵晓旭
常娜
关键词:  光催化  g-C3N4  中空管状  形貌  可见光    
Abstract: In this work, four g-C3N4 photocatalysts including irregular loose flakes g-C3N4-4, granular g-C3N4-8, tubular g-C3N4-24 and irregular tubular g-C3N4-32 were prepared. The results of XRD and XPS proved that four g-C3N4 photocatalysts were successfully prepared. The results of the photoelectric performance tests showed that the hollow tubular g-C3N4-24 had good visible light response, minimal impedance and best photocurrent response, indicating the best separation of photogenerated electrons and holes. The photocatalytic degradation performance of g-C3N4-24 photocatalyst was investigated by using fuchsin basic as a simulated pollutant, and the results showed that the degradation of basic magenta could reach 86.7% within 90 min under the conditions of visible light. Finally, the mechanism of g-C3N4-24 photocatalyst was investigated based on the active species capture experiment, and it was found that ·O2-,h+ and ·OH were all active species in the degradation process of fuchsin basic, with ·O2- being the most dominant active species.
Key words:  photocatalysis    g-C3N4    hollow tubular    morphology    visible light
出版日期:  2024-02-25      发布日期:  2024-03-01
ZTFLH:  X703.1  
  TQ426  
基金资助: 天津市科技计划项目(19PTZWHZ00030)
通讯作者:  *常娜,2012年6月毕业于南开大学化学专业,获博士学位,现任天津工业大学化学工程与技术学院教授、博士研究生导师,天津工业大学印染废水资源化利用中外联合研究中心副主任。主要从事新型纳米材料合成及催化性能研究、高性能分离膜制备以及工业废水处理及资源化利用研究。主持国家重点研发计划项目、国家自然科学基金等科研项目10余项;获教育部自然科学奖一等奖1项,天津市科技进步二等奖1项;以第一作者或通信作者发表论文50余篇;授权中国发明专利8项,美国发明专利2项;参编国家标准2项,行业标准2项;参编英文专著1部。zhaoxiaoxu1027@126.com; changna@tiangong.edu.cn   
作者简介:  刘月琴,2020年毕业于山西工学院建筑环境与能源应用工程专业,获得工学学士学位,现为天津工业大学环境科学与工程学院硕士研究生,目前主要从事光催化剂合成及性能研究。
引用本文:    
刘月琴, 王海涛, 郭建峰, 赵晓旭, 常娜. 不同形貌g-C3N4光催化剂的制备及性能[J]. 材料导报, 2024, 38(4): 22080014-7.
LIU Yueqin, WANG Haitao, GUO Jianfeng, ZHAO Xiaoxu, CHANG Na. Preparation and Performance of g-C3N4 Photocatalysts with Different Morphology. Materials Reports, 2024, 38(4): 22080014-7.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.22080014  或          http://www.mater-rep.com/CN/Y2024/V38/I4/22080014
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