Hot Paper in Chemistry

July 2014
“Synergetic effect of MoS2 and graphene as cocatalysts for enhanced photocatalysis H-2 production activity of TiO2 nanoparticles,” by Quanjun Xiang, Jiaguo Yu, and Mietek Jaroniec, Journal of the American Chemical Society, 134(15): 6575-8, 18 April 2012.

Abstract: “The production of H-2 by photocatalytic water splitting has attracted a lot attention as a clean and renewable solar H-2 generation system. Despite tremendous efforts, the present great challenge in materials science is to develop highly active photocatalysts for splitting of water at low cost. Here we report a new composite material consisting of TiO2 nanocrystals grown in the presence of a layered MoS2/graphene hybrid as a high-performance photocatalyst for H-2 evolution. This composite material was prepared by a two-step simple hydrothermal process using sodium molybdate, thiourea, and graphene oxide as precursors of the MoS2/graphene hybrid and tetrabutylorthotitanate as the titanium precursor. Even without a noble-metal cocatalyst, the TiO2/MoS2/graphene composite reaches a high H-2 production rate of 165.3 mu mol h(-1) when the content of the MoS2/graphene cocatalyst is 0.5 wt 96 and the content of graphene in this cocatalyst is 5.0 wt 96, and the apparent quantum efficiency reaches 9.796 at 365 nm. This unusual photocatalytic activity arises from the positive synergetic effect between the MoS2 and graphene components in this hybrid cocatalyst, which serve as an electron collector and a source of active adsorption sites, respectively. This study presents an inexpensive photocatalyst for energy conversion to achieve highly efficient H-2 evolution without noble metals.”

This 2012 report from the Journal of the American Chemical Society was cited 36 times in current journal articles indexed by Thomson Reuters during January-February 2014. No other paper indexed under the main heading of chemistry, aside from reviews, collected a higher number of citations during that two-month period. Prior to the most recent bimonthly count, citations to the report have accrued as follows, as tracked by Essential Science Indicators Hot Papers:

November-December 2013: 19 citations
September-October 2013: 16
July-August 2013: 12
May-June 2013: 12
March-April 2013: 18
January-February 2013: 46
November-December 2012: 9
September-October 2012: 2
July-August 2012: 20

Total citations to date:190

SOURCE: Thomson Reuters Web of Science

The data and citation records included in this report are from Thomson Reuters Web of ScienceTM. Web of ScienceTM is a registered trademark of Thomson Reuters. All rights reserved.