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论文类型：期刊论文

发表时间：2016-11-01

发表刊物：MATERIALS RESEARCH BULLETIN

收录刊物：SCIE、EI、Scopus

卷号：83

页面范围：396-399

ISSN号：0025-5408

关键字：Composites; Nanostructures; Semiconductors; Electrochemical measurements; Catalytic properties

摘要：In this work, a facile strategy of ultrasound-assisted successive ionic layer adsorption and reaction was successfully employed to modify TiO2 nanotube arrays with BiFeO3 nanoparticles. An enhanced positive surface photovoltage was observed with the obtained BiFeO3/TiO2 nanotube arrays as well as a longer lifetime of charges separation state, as probed by transient photovoltage technique. The higher photocurrent density produced by BiFeO3/TiO2 nanotube arrays further indicated that BiFeO3 nanoparticles contributed to photo conversion and promoted the generation of photo-induced charge carriers over TiO2 nanotube arrays. Besides, the prepared BiFeO3/TiO2 electrode exhibited a much enhanced photoelectrocatalytic performance in removing methyl blue compared with bare TiO2 nanotube arrays. (C) 2016 Elsevier Ltd. All rights reserved.