[1]李放放,苏 雷,苏 复,等.WO3/g-C3N4复合光催化剂的制备及性能研究[J].南京师范大学学报(工程技术版),2023,23(02):040-46.[doi:10.3969/j.issn.1672-1292.2023.02.006]
　Li Fangfang,Su Lei,Su Fu,et al.Preparation and Properties of WO3/g-C3N4 Composite Photocatalyst[J].Journal of Nanjing Normal University(Engineering and Technology),2023,23(02):040-46.[doi:10.3969/j.issn.1672-1292.2023.02.006]
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WO3/g-C3N4复合光催化剂的制备及性能研究
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
23卷
期数:
2023年02期
页码:
040-46
栏目:
化学工程与技术
出版日期:
2023-06-15

文章信息/Info

Title:
Preparation and Properties of WO3/g-C3N4 Composite Photocatalyst
文章编号:
1672-1292(2023)02-0040-07
作者:
李放放; 苏 雷; 苏 复; 林 军
(南京师范大学化学与材料科学学院,江苏 南京 210023)
Author(s):
Li Fangfang; Su Lei; Su Fu; Lin Jun
(School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,China)
关键词:
WO3/g-C3N4; Z型异质结; 光催化降解; 盐酸四环素
Keywords:
WO3/g-C3N4; Z-scheme heterojunction; photocatalytic degradation; tetracycline hydrochloride
分类号:
O643.3
DOI:
10.3969/j.issn.1672-1292.2023.02.006
文献标志码:
A
摘要:
采用溶剂热法合成具有Z型异质结构的WO3/g-C3N4复合光催化材料,采用XRD、XPS、SEM等表征测试了材料的组成、形貌等,考察其光催化性能及对盐酸四环素(TC)的降解能力,并研究了WO3/g-C3N4的降解机理. 与WO3、g-C3N4相比,WO3/g-C3N4复合材料降解效果明显提高,其中 WCN-3(WO3/g-C3N4-3)的催化能力最优. 复合材料光催化活性增强可归因于其较大的比表面积为光催化反应提供了更多的活性位点. PL测试结果显示复合材料中光生电子-空穴复合被显著抑制,自由基捕获实验证实参与光催化降解的主要活性成分是超氧基自由基(·O-2)和空穴(h+).
Abstract:
In this paper,WO3/g-C3N4 Z-scheme heterojunction is successfully synthesized by solvothermal method. XRD,XPS and SEM are used to characterize the composition and morphology of the materials,whereas the photocatalytic performance and their ability to degrade tetracycline hydrochloride(TC)are tested. Compared with WO3 and g-C3N4,the degradation effect of WO3/g-C3N4 are significantly improved and WCN-3(WO3/g-C3N4-3)have the best ability. The enhanced photocatalytic activity of composite material can be attributed to its larger specific surface area,which provides more active sites. PL also shows that electron-hole pair recombination is obvious restrained. In addition,radicals capture experiments confirm that the main active components of photocatalytic degradation are superoxide ion radicals(·O-2)and holes(h+).

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备注/Memo

备注/Memo:
收稿日期:2022-07-11.
基金项目:国家重点研发项目(2017YFB0602500).
通讯作者:苏复,博士,高级实验师,研究方向:光催化材料制备及性能研究、资源综合利用. E-mail:sufu@njnu.edu.cn
更新日期/Last Update: 2023-06-15