类微乳化学沉淀法合成BiOBr-TiO<sub>2</sub>纳米复合材料及其光催化性能

引用本文: 栾云博, 冯玉杰, 王文欣, 谢明政, 井立强. 类微乳化学沉淀法合成BiOBr-TiO₂纳米复合材料及其光催化性能[J]. 物理化学学报, 2013, 29(12): 2655-2660. doi: 10.3866/PKU.WHXB201310141 shu

Citation: LUAN Yun-Bo, FENG Yu-Jie, WANG Wen-Xin, XIE Ming-Zheng, JING Li-Qiang. Synthesis of BiOBr-TiO₂ Nanocrystalline Composite by Microemulsion-Like Chemical Precipitation Method and Its Photocatalytic Activity[J]. Acta Physico-Chimica Sinica, 2013, 29(12): 2655-2660. doi: 10.3866/PKU.WHXB201310141 shu

类微乳化学沉淀法合成BiOBr-TiO₂纳米复合材料及其光催化性能

基金项目:
国家自然科学基金(21071048)资助项目 (21071048)

摘要:

采用简单的类微乳化学沉淀法获得了有效复合的BiOBr-TiO₂纳米材料. 该合成方法的关键在于Br^-的双重作用. Br^-既作为“桥”将十六烷基三甲基溴化铵(CTAB)中CTA⁺与TiO₂粒子相连, 构筑了稳定的油包水的类微乳体系. 同时, 它又作为BiOBr 的溴源有助于纳米复合材料异质结的形成. 与纯TiO₂和传统的水相化学沉淀法获得的BiOBr-TiO₂复合样品相比, 采用类微乳化学沉淀法获得的复合光催化剂表现出高的光生电荷分离效率, 相应地显示出优异的光催化降解气相乙醛和液相苯酚的性能, 这主要与BiOBr和TiO₂粒子之间异质结的有效构筑有关.

关键词:

English

Synthesis of BiOBr-TiO₂ Nanocrystalline Composite by Microemulsion-Like Chemical Precipitation Method and Its Photocatalytic Activity

1.
1 National Engineer Research Centar of Urban Water Resources, Harbin Institute of Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin 150090, P. R. China;
2 Key Laboratory of Functional Inorganic Materials Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, P. R. China
Received Date: 17 July 2013
Available Online: 28 November 2013
Fund Project:
国家自然科学基金(21071048)资助项目

Abstract:

Nanocrystalline BiOBr-TiO₂ composite has been prepared using a microemulsion-like chemical precipitation method. The key to this method is the dual role of Br^- in the synthetic process. The Br^- of cetyl trimethyl ammonium bromide is able to link the cetyltrimethyl ammonium cation with anatase TiO₂ to form a water-in-oil microemulsion-like system. Meanwhile, Br^- is also a bromine source favorable for the fabrication of a nanoheterostructure between BiOBr and TiO₂. Compared with pure TiO₂ and BiOBr-TiO₂ composite obtained using a traditional aqueous system, the as-obtained BiOBr-TiO₂ displays high photogenerated charge separation, responsible for excellent photocatalytic activity for degrading liquid-phase phenol solution and gas-phase acetaldehyde. This result is ascribed to its effective heterostructure.

Key words:

TiO₂
/ BiOBr
/ Microemulsion-like chemical precipitation method
/ Nanocomposite
/ Photocatalysis

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

类微乳化学沉淀法合成BiOBr-TiO₂纳米复合材料及其光催化性能

English

Synthesis of BiOBr-TiO₂ Nanocrystalline Composite by Microemulsion-Like Chemical Precipitation Method and Its Photocatalytic Activity

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

类微乳化学沉淀法合成BiOBr-TiO2纳米复合材料及其光催化性能

English

Synthesis of BiOBr-TiO2 Nanocrystalline Composite by Microemulsion-Like Chemical Precipitation Method and Its Photocatalytic Activity

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

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