Selective Deposition of Silver Oxide on Single-Domain Ferroelectric Nanoplates and Their Efficient Visible-Light Photoactivity

被引：26

作者：

Chen, Fang ^{[1
]}

Ren, Zhaohui ^{[1
]}

Gong, Siyu ^{[1
]}

Li, Xiang ^{[1
]}

Shen, Ge ^{[1
]}

Han, Gaorong ^{[1
]}

机构：

[1] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Cyrus Tang Ctr Sensor Mat & Applicat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2016年 / 22卷 / 34期

基金：

中国国家自然科学基金;

关键词：

ferroelectric polarization; photocatalysis; selective growth; silver oxide; surface chemistry; PHOTOCATALYTIC ACTIVITY; PHOTOCHEMICAL REDUCTION; SOLAR-LIGHT; PBTIO3; NANOFIBERS; TITANIA FILMS; RHODAMINE-B; NANOPARTICLES; BATIO3; REACTIVITY; SURFACES;

D O I：

10.1002/chem.201601456

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, single-crystal and single-domain PbTiO3 nanoplates are employed as substrates to prepare Ag2O/PbTiO3 composite materials through a photodeposition method. It is revealed that silver oxide nanocrystals with an average size of 63 nm are selectively deposited on the positive polar surface of the ferroelectric substrate. The possible mechanism leading to the formation of silver oxide is that silver ions are first reduced to silver and then oxidized by oxygen generation. The composite shows an efficient photo-degradation performance towards rhodamine B (RhB) and methyl orange (MO) under visible-light irradiation. Such highly efficient photoactivity can be attributed to the ferroelectric polarization effect of the substrate, which promotes the separation of photogenerated electrons and holes at the interface.

引用

页码：12160 / 12165

页数：6

共 39 条

[31] Flower-like ZnO-Ag2O composites: precipitation synthesis and photocatalytic activity [J].

Xu, Lingling ;

Wei, Bo ;

Liu, Weilong ;

Zhang, Hailin ;

Su, Chunyan ;

Che, Jixin .

NANOSCALE RESEARCH LETTERS, 2013, 8

[32] Rationally Designed n-n Heterojunction with Highly Efficient Solar Hydrogen Evolution [J].

Xu, Miao ;

Ye, Tiannan ;

Dai, Fang ;

Yang, Jindi ;

Shen, Jingmei ;

He, Qingquan ;

Chen, Wenlong ;

Liang, Na ;

Zai, Jiantao ;

Qian, Xuefeng .

CHEMSUSCHEM, 2015, 8 (07) :1218-1225

[33]

Yi ZG, 2010, NAT MATER, V9, P559, DOI [10.1038/NMAT2780, 10.1038/nmat2780]

[34] Facile synthesis of PbTiO3 truncated octahedra via solid-state reaction and their application in low-temperature CO oxidation by loading Pt nanoparticles [J].

Yin, Simin ;

Zhu, Yihan ;

Ren, Zhaohui ;

Chao, Chunying ;

Li, Xiang ;

Wei, Xiao ;

Shen, Ge ;

Han, Yu ;

Han, Gaorong .

JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (24) :9035-9039

[35] Octahedral-shaped perovskite nanocrystals and their visible-light photocatalytic activity [J].

Yin, Simin ;

Tian, He ;

Ren, Zhaohui ;

Wei, Xiao ;

Chao, Chunying ;

Pei, Jingyuan ;

Li, Xiang ;

Xu, Gang ;

Shen, Ge ;

Han, Gaorong .

CHEMICAL COMMUNICATIONS, 2014, 50 (45) :6027-6030

[36] Enhanced visible-light photocatalytic activity of Bi2WO6 nanoparticles by Ag2O cocatalyst [J].

Yu, Huogen ;

Liu, Rui ;

Wang, Xuefei ;

Wang, Ping ;

Yu, Jiaguo .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 111 :326-333

[37] Interface dominated high photocatalytic properties of electrostatic self-assembled Ag2O/TiO2 heterostructure [J].

Zhou, Weijia ;

Liu, Hong ;

Wang, Jiyang ;

Liu, Duo ;

Du, Guojun ;

Han, Shujuan ;

Lin, Jianjian ;

Wang, Ruijun .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2010, 12 (45) :15119-15123

[38] Ag2O/TiO2 Nanobelts Heterostructure with Enhanced Ultraviolet and Visible Photocatalytic Activity [J].

Zhou, Weijia ;

Liu, Hong ;

Wang, Jiyang ;

Liu, Duo ;

Du, Guojun ;

Cui, Jingjie .

ACS APPLIED MATERIALS & INTERFACES, 2010, 2 (08) :2385-2392

[39] Ag2O-Bi2O3 composites: synthesis, characterization and high efficient photocatalytic activities [J].

Zhu, Lin ;

Wei, Bo ;

Xu, Lingling ;

Lu, Zhe ;

Zhang, Hailin ;

Gao, Hong ;

Che, Jixin .

CRYSTENGCOMM, 2012, 14 (18) :5705-5709

← 1 2 3 4 →