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材料导报  2024, Vol. 38 Issue (6): 22060180-8    https://doi.org/10.11896/cldb.22060180
  无机非金属及其复合材料 |
高效降解盐酸四环素的CdS/BiOCl复合光催化剂的制备及性能
王海涛1, 施宝旭1, 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 Property of CdS/BiOCl Materials: a High Efficiency Photocatalyst for Degradation of Tetracycline Hydrochloride
WANG Haitao1, SHI Baoxu1, ZHAO Xiaoxu1, CHANG Na2,*
1 School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
2 School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, China
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摘要 采用水热法制备了BiOCl超薄纳米片,并将CdS纳米晶体沉积于BiOCl表面制备CdS/BiOCl复合光催化剂。XRD测试结果证明CdS的沉积不会改变BiOCl的晶体结构。XPS测试结果表明CdS/BiOCl复合材料已被成功合成。SEM及HRTEM测试结果证明,CdS纳米晶体均匀沉积在BiOCl的表面。荧光光谱分析数据表明CdS/BiOCl复合材料的电子-空穴分离效果得到有效提高,均优于纯BiOCl材料,且随着Cd(Ac)2·2H2O添加量的增加,复合材料的荧光光谱强度呈现先减弱后增强的现象。根据紫外可见漫反射光谱及XPS价带谱测试结果,计算出复合材料的价带与导带电位。以盐酸四环素作为模拟污染物评价光催化剂的活性,结果表明,CdS/BiOCl复合材料光催化活性更高,仅需经过5 min的可见光照射后,优选的CdS/BiOCl(CB-8)复合材料对盐酸四环素的去除率可达70.6%,为纯BiOCl的16.2倍。最终,根据XPS价带谱和活性物种捕获实验结果推测了CdS/BiOCl复合光催化剂的光催化反应机理。
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王海涛
施宝旭
赵晓旭
常娜
关键词:  光催化  氯氧化铋  硫化镉  盐酸四环素  异质结    
Abstract: In this work, BiOCl ultrathin nanosheets were prepared by hydrothermal method, and then CdS/BiOCl composite photocatalysts were successfully synthesized by deposition method. The results of XRD proved that the introduction of CdS did not change the crystal structure of BiOCl. The XPS showed that the CdS/BiOCl composite photocatalyst was successfully prepared. SEM and HRTEM images demonstrated that CdS was deposited on BiOCl nanosheets. The fluorescence spectrum (PL) indicated that the separation of photo-induced electron-hole based on the composite photocatalyst was significantly improved compared to that of the pure BiOCl, and with the increase of Cd(Ac)2·2H2O addition amount, the fluorescence spectrum intensity first weakened and then enhanced. According to the XPS valence band spectra and UV-Vis-DRS spectra, the positions of the valence band and conduction band of the composite photocatalyst were calculated. Taking tetracycline hydrochloride (TC) as the target pollutant, photocatalysis activity of these photocatalysts had been evaluated. Results showed that the CdS/BiOCl composite photocatalyst possessed higher photocatalytic activity compared with pure BiOCl. The removed ratio reached up to 70.6% based on the optimized CdS/BiOCl (CB-8) photocatalytic after 5 min irradiation, which was 16.2 times to the pure BiOCl. Finally, the possible reaction mechanism of CdS/BiOCl photocatalyst was speculated according to the results of XPS valence band spectra and trapping experiments.
Key words:  photocatalysis    BiOCl    CdS    tetracycline hydrochloride    heterojunction
出版日期:  2024-03-25      发布日期:  2024-04-07
ZTFLH:  X703.1  
  O644  
基金资助: 天津市科技计划项目(19PTZWHZ00030)
通讯作者:  *常娜,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。2012年6月毕业于南开大学化学专业,获博士学位。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和资源化利用研究。主持国家重点研发项目子课题、国家自然科学基金、天津市重化工业节能减排科技重大专项、天津市自然科学基金项目等科研项目10余项;获天津市科技进步二等奖1项,教育部自然科学奖一等奖1项;以第一作者或通信作者发表论文40余篇;授权发明专利5项,参编国家标准2项、行业标准2项,参编英文专著1部。   
作者简介:  王海涛,天津工业大学环境科学与工程学院教授、博士研究生导师,2010年6月毕业于天津工业大学膜科学与技术专业,获博士学位。主要从事新型膜材料、光催化材料以及工业废水处理和资源化利用研究。主持国家重点研发计划、天津市生态环境治理科技重大专项、国家自然科学基金以及中央引导地方科技发展专项资金等项目10余项;以第一作者或通信作者发表论文20余篇。
引用本文:    
王海涛, 施宝旭, 赵晓旭, 常娜. 高效降解盐酸四环素的CdS/BiOCl复合光催化剂的制备及性能[J]. 材料导报, 2024, 38(6): 22060180-8.
WANG Haitao, SHI Baoxu, ZHAO Xiaoxu, CHANG Na. Preparation and Property of CdS/BiOCl Materials: a High Efficiency Photocatalyst for Degradation of Tetracycline Hydrochloride. Materials Reports, 2024, 38(6): 22060180-8.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.22060180  或          https://www.mater-rep.com/CN/Y2024/V38/I6/22060180
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