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Ball-milling combined calcination synthesis of MoS2/CdS photocatalysts for high photocatalytic H2 evolution activity under visible light irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
40681 45862 2012 7 PDF Available
Title
Ball-milling combined calcination synthesis of MoS2/CdS photocatalysts for high photocatalytic H2 evolution activity under visible light irradiation
Abstract

A simple and effective ball-milling combined calcination method has been developed to prepare MoS2/CdS photocatalysts for visible-light-driven water splitting into H2 for the first time. The photocataysts exhibit very high photocatalytic activities. A H2 evolution rate up to 1315 μmol h−1 has been achieved based on 0.9 mol% MoS2/CdS (PT) photocatalyst (PT is the abbreviation of pretreatment), which is much higher than 488 μmol h−1 for the 0.2 wt% Pt/CdS (PT) photocatalyst. In the meantime, this photocatalyst exhibits good anti-photocorrosion property. The ball-milling procedure makes the starting material, (NH4)2MoS4, disperse uniformly on the surface of CdS nanoparticles. Further calcination treatment leads to complete decomposition of (NH4)2MoS4 to afford MoS2/CdS photocatalysts with intimate contacts between the two components. The pretreatment of CdS also has important positive effect on photocatalytic activity. Similar reactions by attempting different kinds of commercial CdS products have been carried out, indicating this preparation method is universal.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (241 K)Download as PowerPoint slideHighlights► A simple and effective ball-milling combined calcination method was developed. ► Molar ratio of MoS2 to CdS, ball-milling and calcination time were optimized. ► The highest H2 evolution rate was 1315 μmol h−1 for the 0.9 mol% MoS2/CdS (PT). ► The as prepared photocatalyst exhibits good anti-photocorrosion property.

Keywords
MoS2/CdS; Ball-milling; Photocatalyst; H2 evolution; Visible light irradiation
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Ball-milling combined calcination synthesis of MoS2/CdS photocatalysts for high photocatalytic H2 evolution activity under visible light irradiation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 443–444, 7 November 2012, Pages 138–144
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us