MWCNT/Bi2WO6复合光催化剂的制备及其活性研究

doi:10.11896/cldb.201902002

材料导报

2019, Vol. 33

Issue (2): 211-214 https://doi.org/10.11896/cldb.201902002

无机非金属及其复合材料

MWCNT/Bi₂WO₆复合光催化剂的制备及其活性研究

王永强^1,2, 陈曦¹, 刘昕¹, 刘芳^1,2, 赵朝成¹, 姜珊¹, 吴鹏伟¹

1 中国石油大学(华东)化学工程学院,青岛 266580
2 中国石油大学(华东)石油石化污染物控制与处理国家重点实验室, 青岛 266580

Synthesis of MWCNT/Bi₂WO₆ Composite Photocatalyst and Its
Photocatalytic Activity

WANG Yongqiang^1,2, CHEN Xi¹, LIU Xin¹, LIU Fang^1,2, ZHAO Chaocheng¹, JIANG Shan¹, WU Pengwei¹

1 College of Chemical Engineering, China University of Petroleum(East China), Qingdao 266580
2 State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580

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摘要采用水热合成法将多壁碳纳米管(MWCNT)和Bi₂WO₆有效复合,制备了具有高效光催化活性的MWCNT/Bi₂WO₆催化剂。利用XRD、SEM、TEM、XPS、BET和UV-Vis等技术对样品进行表征分析,以罗丹明B为目标污染物,考察了催化剂的光催化性能。结果表明,合成的样品均为斜方晶体结构,MWCNT交互附着在Bi₂WO₆片层结构的周围,两者紧密接触形成了复合物。合成的MWCNT/Bi₂WO₆样品具有较大的比表面积和较小的禁带宽度,能有效抑制光生电子和空穴的复合,增加了量子的传递效率,更容易被光照激发。当MWCNT负载量为2%(质量分数)时,催化剂表现出了最佳的催化性能,在模拟太阳光试验中,该催化剂对10 mg/L的罗丹明B溶液光降解效率高达98.8%。

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	王永强
	陈曦
	刘昕
	刘芳
	赵朝成
	姜珊
	吴鹏伟

关键词: 光催化复合物多壁碳纳米管钨酸铋

Abstract: The MWCNT/Bi₂WO₆ composite photocatalysts with high photocatalytic activity were successfully synthesized from multiwalled carbon nanotubes and Bi₂WO₆ via hydrothermal method. The structures and morphology of the samples were characterized by XRD, SEM, TEM, XPS, BET and UV-Vis. The photocatalytic performance of the catalyst was investigated by taking Rhodamine B as the target pollutant. The results indicated that the obtained composite presented orthorhombic crystal structure, the MWCNTs alternately attached to the lamella structure of Bi₂WO₆ to form the composite. The synthesized MWCNT/Bi₂WO₆ possessed large specific surface area and narrow band gap, which could effectively inhibit the recombination of photogenerated electrons and holes, increase the quantum transfer efficiency and was more likely to be excited by light. The MWCNT/Bi₂WO₆ photocatalysts exhibited the best catalytic performance with the loading amount of 2%. Under the simulated sunlight test, the photodegradation efficiency of MWCNT/Bi₂WO₆ to 10 mg/L Rhodamine B could reach as high as 98.8%.

Key words: photocatalysis composite multi-walled carbon nanotubes Bi₂WO₆

发布日期: 2019-01-31

ZTFLH:

O643

基金资助: 国家自然科学基金项目(51202294);中央高校基本科研业务费专项资金(18CX02123A)

作者简介: 王永强,中国石油大学(华东),副教授。wyqupc@163.com

引用本文:

王永强, 陈曦, 刘昕, 刘芳, 赵朝成, 姜珊, 吴鹏伟. MWCNT/Bi₂WO₆复合光催化剂的制备及其活性研究[J]. 材料导报, 2019, 33(2): 211-214.
WANG Yongqiang, CHEN Xi, LIU Xin, LIU Fang, ZHAO Chaocheng, JIANG Shan, WU Pengwei. Synthesis of MWCNT/Bi₂WO₆ Composite Photocatalyst and Its
Photocatalytic Activity. Materials Reports, 2019, 33(2): 211-214.

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http://www.mater-rep.com/CN/10.11896/cldb.201902002 或 http://www.mater-rep.com/CN/Y2019/V33/I2/211

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