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论文类型：期刊论文
发表时间：2015-11-01
发表刊物：MATERIALS LETTERS
收录刊物：SCIE、EI、Scopus
卷号：158
页面范围：104-107
ISSN号：0167-577X
关键字：Nanocomposites; Energy storage and conversion; Solar energy materials
摘要：With the aim of improving the performance of TiO2 nanotube arrays (NTAs), alpha-Bi2O3 nanoparticles were successfully implanted into the nanotube arrays via a vacuum-assisted impregnation strategy for the first time. Photoelectrochemical characterizations and comparative investigations on the degradation efficiency of 2-Chlorophenol demonstrate the enhanced photo activity of alpha-Bi2O3/TiO2 nanotube arrays over the pure nanotube arrays. The as-prepared alpha-Bi2O3/TiO2-NTAs grown on Ti behaved as a recyclable and stable electrode and outperformed pure TiO2-NTAs. The alpha-Bi2O3 nanoparticles modified TiO2 nanotube arrays could favor the separation and transfer of photoinduced charge carriers, which promote the energy conversion and the generation of reactive radicals upon irradiation. The predominant superoxide radicals were evidenced by electron spin resonance signals. (C) 2015 Elsevier B.V. All rights reserved.