两步水热法制备<strong>BiOCl-RGO</strong>纳米复合材料及其光催化性能

doi:10.11901/1005.3093.2019.443

材料研究学报

2020, Vol. 34

Issue (2): 92-100 DOI: 10.11901/1005.3093.2019.443

研究论文

本期目录 | 过刊浏览

两步水热法制备BiOCl-RGO纳米复合材料及其光催化性能

秦艳利^1,²,杨艳^1,²,赵鹏羽^1,²,刘振宇²,倪丁瑞²(

)

1. 沈阳理工大学理学院沈阳 110159
2. 中国科学院金属研究所沈阳材料科学国家研究中心沈阳 110016

Microstructures and Photocatalytic Properties of BiOCl-RGO Nanocomposites Prepared by Two-step Hydrothermal Method

QIN Yanli^1,²,YANG Yan^1,²,ZHAO Pengyu^1,²,LIU Zhenyu²,NI Dingrui²(

)

1. School of Science, Shenyang Ligong University, Shenyang 110159, China
2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

秦艳利,杨艳,赵鹏羽,刘振宇,倪丁瑞. 两步水热法制备BiOCl-RGO纳米复合材料及其光催化性能[J]. 材料研究学报, 2020, 34(2): 92-100.
Yanli QIN, Yan YANG, Pengyu ZHAO, Zhenyu LIU, Dingrui NI. Microstructures and Photocatalytic Properties of BiOCl-RGO Nanocomposites Prepared by Two-step Hydrothermal Method[J]. Chinese Journal of Materials Research, 2020, 34(2): 92-100.

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摘要:

用两步水热法合成了BiOCl-RGO复合材料。先在乙二醇和去离子水的混合溶液中合成直径约为400 nm、由纳米片构成的微球状单一BiOCl样品，在此基础上引入RGO载体制备出BiOCl-RGO纳米复合材料。使用Raman光谱、XRD、XPS等手段表征样品的物相构成，用SEM和TEM观测其微观形貌，通过降解甲基橙评定样品的光催化性能。结果表明，水热温度显著影响复合材料的光催化性能，在140℃制备的BiOCl和石墨烯结合的样品具有最高的光催化性能。

关键词 ：复合材料, 氯氧化铋, 石墨烯, 水热法, 光催化性能

Abstract：

Composites of BiOCl-RGO were synthesized via a two-step hydrothermal method. Firstly plain BiOCl was synthesized in the mixed solution of ethylene glycol and deionized water, the acquired nanosphere-like BiOCl of about 400 nm in diameter composed of many nanosheets. Then the RGO carrier was deposited onto the plain BiOCl to prepare BiOCl-RGO nanocomposites. The composites were characterized by Raman spectroscopy, XRD, XPS, SEM and TEM. The photocatalytic property of the composites was evaluated by degrading methyl orange. The results show that the temperature of hydrothermal process significantly affects the photocatalytic property of the composites. The composite of BiOCl -graphene prepared at 140°C shows the highest photocatalytic performance.

Key words： composite bismuth oxychloride (BiOCl) graphene hydrothermal method photocatalytic performance

收稿日期: 2019-09-12

ZTFLH:

O643

基金资助:国家自然科学基金(51871215);辽宁省科技厅项目(1010145002220);辽宁省教育厅项目(LG2d60S)

作者简介: 秦艳利，女，1979年生，博士，副教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2019.443 或 https://www.cjmr.org/CN/Y2020/V34/I2/92

图1 单一BiOCl与BiOCl-RGO复合粒子中BiOCl的拉曼光谱(a)和BiOCl-RGO复合粒子中RGO的拉曼光谱(b)

图2 所制备样品的XRD图谱

图3 样品B的Bi 4f、Cl 2p和BR-120的C 1s的XPS谱

图4 样品B的低倍和高倍SEM照片以及 BR-120的SEM照片

图5 样品B和 BR-120的TEM照片

图6 样品B、BR-120、BR-140和BR-160降解MO水溶液的吸收光谱图

图7 不同水热温度样品的光催化降解率和对应的降解率一级动力学图

表1 可见光照射下光催化剂降解MO的准一级速率常数和催化效率

图8 BiOCl-RGO降解MO的可能机制示意图

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