Tailoring preparation, structure and photocatalytic activity of layer-by-layer films for degradation of different target molecules

被引：13

作者：

Ronge, Jan ^{[1
]}

Bets, Jeroen ^{[1
]}

Pattanaik, Shruti ^{[1
]}

Bosserez, Tom ^{[1
]}

Borellini, Sara ^{[1
]}

Sree, Sreeprasanth Pulinthanathu ^{[1
]}

Decher, Gero ^{[2
]}

Martens, Johan A. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, B-3001 Leuven, Belgium

[2] CNRS Strasbourg, Inst Charles Sadron, F-67034 Strasbourg, France

来源：

CATALYSIS TODAY | 2015年 / 246卷

基金：

比利时弗兰德研究基金会;

关键词：

Layer-by-layer deposition; Photocatalysis; Water splitting; Polyelectrolytes; Self assembly; Titanium dioxide; ULTRATHIN MULTILAYER FILMS; SELF-ASSEMBLY PROCESS; THIN-FILMS; TIO2; NANOPARTICLES; FABRICATION; ADSORPTION; GRAPHENE; BUILDUP;

D O I：

10.1016/j.cattod.2014.07.051

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Photocatalytic thin films composed of titanium dioxide and poly(styrene sulfonate) with hierarchical porosity and high transparency were prepared by the layer-by-layer self-assembly method. The influence of preparation conditions on the structure and photocatalytic activity of the films was investigated. It was found there is no need to reach adsorption equilibrium during layer deposition. Using very short deposition times, films with better transparency and higher activity for methylene blue photo-oxidation were obtained. Diffusion limitations due to strong adsorption of dye molecules and ammonia to the polyelectrolyte were revealed. These results indicate that films could be devised to selectively degrade specific target molecules in a mixture. The films were deposited on a three-dimensional carbon substrate and successfully demonstrated in a photoelectrochemical water splitting experiment. (C) 2014 Elsevier B.V. All rights reserved.

引用

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页码：28 / 34

页数：7

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