水热法制备Eu复合BiVO4纳米片及其光催化降解性能

doi:10.16085/j.issn.1000-6613.2016.04.024

化工进展 ›› 2016, Vol. 35 ›› Issue (04): 1121-1125.DOI: 10.16085/j.issn.1000-6613.2016.04.024

水热法制备Eu复合BiVO₄纳米片及其光催化降解性能

汪志新¹, 黄少斌¹, 费志宾², 简子聪¹

1. 华南理工大学环境与能源学院, 广东广州 510006;
2. 中国人民解放军75822部队, 广东广州 510510

收稿日期:2015-07-27 修回日期:2015-10-29 出版日期:2016-04-05 发布日期:2016-04-05
通讯作者: 黄少斌,博士,教授.E-mail:chshuang@scut.edu.cn.
作者简介:汪志新(1992-),男,硕士研究生,主要从事纳米光催化材料的研究.E-mail:wang_870207314@163.com.
基金资助:
国家自然科学基金(51378217)、广东省自然科学基金(2014B050505004)及广东省科技计划(2015B020215004)项目.

Synthesis and photocatalytic activity of Eu-doped BiVO₄ nanosheets by hydrothermal method

WANG Zhixin¹, HUANG Shaobin¹, FEI Zhibin², JIAN Zicong¹

1. College of Environment and Energy, South China University of Technology, Guangzhou 510000, Guangdong, China;
2. Troops 75822 of People's Libration Army, Guangzhou 510510, Guangdong, China

Received:2015-07-27 Revised:2015-10-29 Online:2016-04-05 Published:2016-04-05

摘要/Abstract

摘要： 水热法制备了以聚乙二醇(PEG-200)为模板剂的稀土元素Eu复合BiVO₄光催化剂,并对材料进行XRD、SEM、UV-vis DRS、BET的表征和分析.以光催化降解甲基蓝(MB)效率作为光催化活性的指标,考察Eu复合对BiVO₄光催化活性的影响.结果表明:Eu复合可使BiVO₄的晶型发生转变,同时又抑制四方相晶体生长,使晶粒尺寸变小,比表面积增大.复合样品中,部分Eu³⁺进入BiVO₄晶格内取代Bi³⁺,使晶形发生畸变,有利于光催化活性的提高.当Eu的复合量为50%时,光催化降解甲基蓝的效率最高,可见光照射120min降解效率可达到90%,较纯BiVO₄的光降解效率明显提高.

关键词: 水热, 制备, 催化剂, 降解

Abstract: Eu-doped BiVO₄ photocatalysts were synthesized by hydrothermal method using PEG-200 as the template. The material were characterized by XRD, SEM, UV-vis DRS and BET. The photocatalytic degradation rate of methyl blue was used to investigate the influence of the dopants for the photocatalytic activity of BiVO₄. The results revealed that the dopants had a significant effect on the transition of crystal phase, prevention of the crystal growth and the increase of BET. Some Bi³⁺ in the BiVO₄ crystal lattice were substituted by Eu³⁺ leading to a crystal distortion, which was beneficial for the enhancement of photocatalytic activity. For 50% Eu-doped BiVO₄ nanosheets, it performed with the best photocatalytic activity. The photodegradation rate of MB was 90% after 120min visible light irradiation, which was much higher than that of pure BiVO₄.

Key words: hydrothermal, preparation, catalyst, degradation

中图分类号:

O643

汪志新, 黄少斌, 费志宾, 简子聪. 水热法制备Eu复合BiVO₄纳米片及其光催化降解性能[J]. 化工进展, 2016, 35(04): 1121-1125.

WANG Zhixin, HUANG Shaobin, FEI Zhibin, JIAN Zicong. Synthesis and photocatalytic activity of Eu-doped BiVO₄ nanosheets by hydrothermal method[J]. Chemical Industry and Engineering Progree, 2016, 35(04): 1121-1125.

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水热法制备Eu复合BiVO₄纳米片及其光催化降解性能

Synthesis and photocatalytic activity of Eu-doped BiVO₄ nanosheets by hydrothermal method

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