脉冲沉积制备Cu<sub>2</sub>O/TiO<sub>2</sub>纳米管异质结的可见光光催化性能

引用本文: 张剑芳, 王岩, 沈天阔, 舒霞, 崔接武, 陈忠, 吴玉程. 脉冲沉积制备Cu₂O/TiO₂纳米管异质结的可见光光催化性能[J]. 物理化学学报, 2014, 30(8): 1535-1542. doi: 10.3866/PKU.WHXB201405221 shu

Citation: ZHANG Jian-Fang, WANG Yan, SHEN Tian-Kuo, SHU Xia, CUI Jie-Wu, CHEN Zhong, WU Yu-Cheng. Visible Light Photocatalytic Performance of Cu₂O/TiO₂ Nanotube Heterojunction Composites Prepared by Pulse Deposition[J]. Acta Physico-Chimica Sinica, 2014, 30(8): 1535-1542. doi: 10.3866/PKU.WHXB201405221 shu

脉冲沉积制备Cu₂O/TiO₂纳米管异质结的可见光光催化性能

基金项目:
国家自然科学基金（51302060，51128201，51272062，51311130317)

高等学校博士学科点专项科研基金（20130111120019)

安徽省自然科学基金（1308085QE74)

中央高校基本科研业务费专项资金（2012HGBZ0648）资助项目

摘要:

在用阳极氧化法制备有序排列TiO₂纳米管阵列薄膜的基础上，引入脉冲沉积工艺，成功实现了均匀、弥散分布的Cu₂O纳米颗粒修饰改性TiO₂纳米管阵列，形成Cu₂O/TiO₂ 纳米管异质结复合材料. 利用场发射扫描电镜（FESEM）、场发射透射电镜（FETEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）和紫外-可见漫反射光谱（UV-Vis DRS）对样品进行表征，重点研究了Cu₂O/TiO₂ 纳米管异质结的光电化学特性和对甲基橙（MO）的可见光催化降解性能. 结果表明，Cu₂O纳米颗粒均匀附着在TiO₂纳米管阵列的管口和中部位置，所制备的Cu₂O/TiO₂ 纳米管异质结具有高效的可见光光催化性能；在浓度为0.01 mol·L^-1的CuSO₄溶液中制得的Cu₂O/TiO₂纳米管异质结表现出最好的电化学特性和光催化性能；另外，对Cu₂O纳米颗粒影响光催化活性的机理进行了讨论.

关键词:

English

Visible Light Photocatalytic Performance of Cu₂O/TiO₂ Nanotube Heterojunction Composites Prepared by Pulse Deposition

1.
1. School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P. R. China;
2. School of Materials Science & Engineering, Hefei University of Technology, Hefei 230009, P. R. China;
3. Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei 230009, P. R. China;
4. School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
Received Date: 21 March 2014
Available Online: 18 July 2014
Fund Project:
国家自然科学基金（51302060，51128201，51272062，51311130317)

高等学校博士学科点专项科研基金（20130111120019)

安徽省自然科学基金（1308085QE74)

中央高校基本科研业务费专项资金（2012HGBZ0648）资助项目

Abstract:

Highly ordered TiO₂ nanotube arrays (TNAs) were fabricated by an electrochemical anodization process and Cu₂O nanoparticles were subsequently deposited onto these TNAs via pulse deposition to form Cu₂O/TiO₂ nanotube heterojunction composite materials. Samples were characterized by field emission scanning electron microscopy (FESEM), field emission transmission electron microscopy (FETEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-Vis diffusion reflection spectroscopy (DRS). The photocatalytic performances of the Cu₂O/TiO₂ composites were investigated by following the visible-light induced photocatalytic decomposition of methyl orange (MO). The results indicated that the inner surfaces and interfaces of the TNAs had been successfully modified with uniformly distributed Cu₂O nanoparticles, and that these composites could effectively improve the visible light photocatalytic performance. The Cu₂O/TiO₂ nanotube composite obtained using 0.01 mol·L^-1 CuSO₄ solution exhibited the best photocurrent and photocatalytic performance. Based on the results obtained, a possible photocatalytic mechanism is also discussed.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

脉冲沉积制备Cu₂O/TiO₂纳米管异质结的可见光光催化性能

English

Visible Light Photocatalytic Performance of Cu₂O/TiO₂ Nanotube Heterojunction Composites Prepared by Pulse Deposition

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

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

脉冲沉积制备Cu2O/TiO2纳米管异质结的可见光光催化性能

English

Visible Light Photocatalytic Performance of Cu2O/TiO2 Nanotube Heterojunction Composites Prepared by Pulse Deposition

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

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