Use of Pt/N-doped mesoporous-assembled nanocrystalline TiO2 for photocatalytic H2 production under visible light irradiation

被引：71

作者：

Sreethawong, Thammanoon ^{[1
,2
]}

Laehsalee, Siriporn ^{[1
]}

Chavadej, Sumaeth ^{[1
,2
]}

机构：

[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand

[2] Chulalongkorn Univ, Natl Ctr Excellence Petr Petrochem & Adv Mat, Bangkok 10330, Thailand

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 05期

关键词：

Titania; Mesoporous assembly; N-doping; Pt-loading; Visible light; Photocatalytic hydrogen production; HYDROGEN EVOLUTION; WATER; GENERATION;

D O I：

10.1016/j.catcom.2008.10.029

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：

In this work, nanocrystalline mesoporous-assembled TiO2 photocatalyst was initially synthesized by a sol-gel process with the aid of structure-directing surfactant, N-doped by calcining with urea at a urea:- TiO2 molar ratio of 1:1, and then loaded with various Pt contents via the incipient wetness impregnation method for photocatalytic H-2 production from water splitting using methanol as a sacrificial electron donor under visible light irradiation, The prepared photocatalysts were systematically characterized by N-2 adsorption-desorption analysis, XRD, TEM, and XPS. It was observed that the impregnation of Pt onto the N-doped nanocrystalline mesoporous-assem bled TiO2 considerably improved its photocatalytic H-2 production activity with the optimum Pt loading content of 1.3 wt% The experimental results clearly revealed that the Pt dispersion on the photocatalyst surface played a significant role in enhancing the photocatalytic activity. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：538 / 543

页数：6

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