Triphenylamine-functionalized graphene decorated with Pt nanoparticles and its application in photocatalytic hydrogen production

被引：71

作者：

Li, Zhi ^{[1
]}

Chen, Yajing ^{[1
]}

Du, Yukou ^{[1
]}

Wang, Xiaomei ^{[1
]}

Yang, Ping ^{[1
]}

Zheng, Junwei ^{[2
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Soochow Univ, Inst Chem Power Sources, Suzhou 215006, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Graphene; Triphenylamine; 1,3-Dipolar cycloaddition; Electron transfer; Photocatalysis; Hydrogen production; VISIBLE-LIGHT; CARBON NANOTUBES; GRAPHITE; OXIDE; EXFOLIATION; WATER; SEMICONDUCTOR; PLATINUM; FILMS; AREA;

D O I：

10.1016/j.ijhydene.2011.12.045

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：

A new type of graphene-based nanohybrid was prepared from graphene nanosheets and 4-(diphenylamino)benzaldehyde (TPA-CHO) through 1,3-dipolar cycloaddition. The nanohybrid was modified by platinum nanoparticles via photodeposition. The nanohybrid and its Pt modified nanocomposite were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Ultraviolet-visible absorption (UV-vis), Fourier transform infrared (FTIR), and Raman spectra confirmed that triphenylamine moiety grafted on the graphene surface. The results of fluorescence quenching and photocurrent enhancement of the triphenylamine-functionalized graphene revealed that photoinduced electron transfer from triphenylamine moiety to the graphene sheet. The investigation of using the Pt modified graphene-based nanocomposite as a photocatalyst for H-2 evolution showed that under UV-vis light irradiation, the average H-2 evolution rate and the quantum efficiency is 2.3 mu mol h(-1) and 0.45% mol E-1 respectively. This work demonstrated a potential application of an organic sensitizer covalently functionalized graphene as a novel photocatalyst in the field of solar energy conversion. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：4880 / 4888

页数：9

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