Sandwich-like TiO2@ZnO-based noble metal (Ag, Au, Pt, or Pd) for better photo-oxidation performance: Synergistic effect between noble metal and metal oxide phases

被引：46
作者：
Li, Shunxing [1 ,2 ]
Cai, Jiabai [1 ]
Wu, Xueqing [1 ]
Zheng, Fengying [1 ,2 ]
机构：
[1] Minnan Normal Univ, Fujian Prov Univ Key Lab Pollut Monitoring & Cont, Zhangzhou 363000, Peoples R China
[2] Minnan Normal Univ, Fujian Prov Key Lab Modern Analyt Sci & Separat T, Zhangzhou 363000, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2018年 / 443卷
基金：
中国国家自然科学基金;
关键词：
Double-shelled nanocomposite; Noble metal; Photocatalytic oxidation; NANOCOMPOSITE HOLLOW SPHERES; CORE-SHELL NANOSTRUCTURES; PHOTOCATALYTIC ACTIVITY; NANOPARTICLES; OXIDATION; ALCOHOLS; TIO2; SURFACE; OXYGEN; MICROSPHERES;
D O I：
10.1016/j.apsusc.2018.03.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The performance of different noble metals (NMs) with controllable size (5 nm) as co-catalyst on the photocatalytic oxidation of TiO2@ZnO hollow spheres was tested with benzyl alcohol in the presence of water under ambient conditions. A new type of solar-light-driven TiO2@NMs@ZnO nanocomposite was fabricated by using a template (surface functionalized polystyrene balls), hydrothermal reaction, and calcination. Under simulated sunlight irradiation, the photo-oxidation rate of benzyl alcohol was in the following of TiO2@Ag@ZnO > TiO2@Au@ZnO > TiO2@Pt@ZnO > TiO2@Pd@ZnO > TiO2@ZnO. This result was due to the combination of TiO2 and ZnO, as well as the sandwiched Ag NPs as electron trap site, which can store and shuttle photo-generated electrons, and then enhance photo-generation of active radicals. Electron paramagnetic resonance (EPR) spectroscopy, as well as photo-luminescence (PL), photoreduction of Cr(VI) and electrochemical measurements were taken to verify this conclusion. Taking into account the multi-functional combination of precious metals and semiconductor materials, this work could provide new insights for the design of high-performance photocatalysts. (C) 2018 Elsevier B.V. All rights reserved.
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页码：603 / 612
页数：10
相关论文
共 49 条
[1]  
Agrawal M., 2013, CHEM MATER, V21, P5343
[2]   Green chemistry and photochemistry were born at the same time [J].
Albini, A ;
Fagnoni, M .
GREEN CHEMISTRY, 2004, 6 (01) :1-6
[3]   First example of ZnO-TiO2 nanocomposites by chemical vapor deposition:: Structure, morphology, composition, and gas sensing performances [J].
Barreca, Davide ;
Comini, Elisabetta ;
Ferrucci, Angelo P. ;
Gasparotto, Alberto ;
Maccato, Chiara ;
Maragno, Cinzia ;
Sberveglieri, Giorgio ;
Tondello, Eugenio .
CHEMISTRY OF MATERIALS, 2007, 19 (23) :5642-5649
[4]   Controllable location of Au nanoparticles as cocatalyst onto TiO2@CeO2 nanocomposite hollow spheres for enhancing photocatalytic activity [J].
Cai, Jiabai ;
Wu, Xueqing ;
Li, Shunxing ;
Zheng, Fengying .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 201 :12-21
[5]   Synthesis of TiO2@WO3/Au Nanocomposite Hollow Spheres with Controllable Size and High Visible-Light-Driven Photocatalytic Activity [J].
Cai, Jiabai ;
Wu, Xueqing ;
Li, Shunxing ;
Zheng, Fengying .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2016, 4 (03) :1581-1590
[6]   Synergistic Effect of Double-Shelled and Sandwiched TiO2@Au@C Hollow Spheres with Enhanced Visible-Light-Driven Photocatalytic Activity [J].
Cai, Jiabai ;
Wu, Xueqing ;
Li, Shunxing ;
Zheng, Fengying ;
Zhu, Licong ;
Lai, Zhanghua .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (06) :3764-3772
[7]   Preparation and enhanced photoelectrochemical performance of coupled bicomponent ZnO-TiO2 nanocomposites [J].
Chen, Da ;
Zhang, Hao ;
Hu, Song ;
Li, Jinghong .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (01) :117-122
[8]   A Sinter-Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO2 Nanofibers and Covered by Porous Silica [J].
Dai, Yunqian ;
Lim, Byungkwon ;
Yang, Yong ;
Cobley, Claire M. ;
Li, Weiyang ;
Cho, Eun Chul ;
Grayson, Benjamin ;
Fanson, Paul T. ;
Campbell, Charles T. ;
Sun, Yueming ;
Xia, Younan .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2010, 49 (44) :8165-8168
[9]   Self-Cleaning Properties, Mechanical Stability, and Adhesion Strength of Transparent Photocatalytic TiO2-ZnO Coatings on Polycarbonate [J].
Fateh, Razan ;
Dillert, Ralf ;
Bahnemann, Detlef .
ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (04) :2270-2278
[10]   Co3O4 Hexagonal Platelets with Controllable Facets Enabling Highly Efficient Visible-Light Photocatalytic Reduction of CO2 [J].
Gao, Chao ;
Meng, Qiangqiang ;
Zhao, Kun ;
Yin, Huajie ;
Wang, Dawei ;
Guo, Jun ;
Zhao, Shenlong ;
Chang, Lin ;
He, Meng ;
Li, Qunxiang ;
Zhao, Huijun ;
Huang, Xingjiu ;
Gao, Yan ;
Tang, Zhiyong .
ADVANCED MATERIALS, 2016, 28 (30) :6485-+
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