fulltext.study @t Gmail

Photocatalytic generation of hydrogen with visible-light nitrogen-doped lanthanum titanium oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
54985 47035 2013 5 PDF Available
Title
Photocatalytic generation of hydrogen with visible-light nitrogen-doped lanthanum titanium oxides
Abstract

In order to generate hydrogen by splitting water under visible-light irradiation, nitrogen-doped La2Ti2O7 (LTO) nanosheets loaded with the Pt nanoparticles have been synthesized by hydrothermal processing, followed with wet impregnation and subsequent heat treatment in a NH3 flow. The light absorption of the pristine LTO nanosheets is cut off at 330 nm while the N-doped LTO nanosheets exhibit the extended light absorption up to 560 nm. Nitrogen doping has not only resulted in the visible-light-responsive photocatalytic water splitting but also enhanced the ultraviolet-light-responsive photocatalytic activity. Loading the Pt nanoparticles on the LTO surface further improved the photocatalytic activity due to the enhanced separation of charge carriers.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (322 K)Download as PowerPoint slideHighlights► La2Ti2O7 nanosheets were synthesized. ► Two steps were applied to improve the photocatalytic activity of La2Ti2O7 nanosheets for H2 generation: Pt loading and N doping. ► N-doped La2Ti2O7 nanosheets loaded with Pt had highest rate of H2 generation.

Keywords
Hydrogen; Water splitting; Photocatalyst; Nanosheet; Lanthanum titanium oxide
First Page Preview
Photocatalytic generation of hydrogen with visible-light nitrogen-doped lanthanum titanium oxides
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 199, 1 January 2013, Pages 48–52
Authors
, , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis