Arrays of Au-TiO2 Janus-like nanoparticles fabricated by block copolymer templates and their photocatalytic activity in the degradation of methylene blue

被引：37

作者：

Fu, Xiaoning ^{[1
]}

Liu, Jun ^{[1
]}

Yang, Hui ^{[1
]}

Sun, Jiuchuan ^{[1
]}

Li, Xue ^{[1
]}

Zhang, Xiaokai ^{[2
]}

Jia, Yuxi ^{[3
]}

机构：

[1] Univ Jinan, Shandong Prov Key Lab Fluorine Chem & Chem Mat, Sch Chem & Chem Engn, Jinan 250022, Peoples R China

[2] Shandong Normal Univ, Coll Phys & Elect, Jinan 250014, Peoples R China

[3] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 130卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Block copolymers; Au nanoparticles; TiO2; nanoparticles; Janus-like nanoparticles; Sol-gel; SILVER NANOPARTICLES; GOLD NANOPARTICLES; CHARGE SEPARATION; TIO2; FILMS; PARTICLES; BEHAVIOR; AU; PHOTOLUMINESCENCE; MORPHOLOGY;

D O I：

10.1016/j.matchemphys.2011.06.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple approach towards the fabrication of an array of Au-titania Janus-like nanoparticles is presented. Monolayer organic-inorganic hybrid films are produced by spin coating the mixture of polystyrene-block-poly (ethylene oxide) (PS-b-PEO)/HAuCl4 solution and titania sol-gel precursor solution. HAuCl4 and titania are incorporated in the PEO domains. After removing the organic matrix by deep UV irradiation, arrays of Au-TiO2 Janus-like nanoparticles on the substrate surface are obtained. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) measurements are employed to characterize the Janus-like nanoparticles. The photocatalytic degradation of methylene blue (MB) chosen as the test reaction to examine the photocatalytic activity of the Au-TiO2 Janus-like nanoparticles is shown to be more effective as compared to that of TiO2 nanoparticles or Au-TiO2 composite nanoparticles. The increased photocatalytic activity of Au-TiO2 Janus-like nanoparticles is attributed to the Au-TiO2 heterointerfaces. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：334 / 339

页数：6

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