Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 31, Pages 26153-26161Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b02093
Keywords
band gap tuning; photocatalytic H-2 production; nanocomposite; MoS2; MoSe2; exfoliation; transition-metal dichalcogenides
Funding
- National Research Foundation of Korea (NRF) - Korean Government (MSIP) [2014R1A4A1001690, 2016R1E1A1A01941978]
- NRF - Minstry of Science and ICT [2016K1A4A4A01922028]
- 2018 Post-Doc. Development Program of Pusan National University
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Transition-metal dichalcogenide materials play a major role in the state-of-the-art innovations for energy conversion because of potential applications resulting from their unique properties. These materials additionally show inordinate potential toward the progress of hygienic power sources to deal with increasing environmental disputes at the time of skyrocketing energy demands. Herein, we report earth-abundant, few-layered, MoSe2-bridged MoS2/cadmium sulfide (CdS) nanocomposites, which reduce photogenerated electron and hole recombination by effectively separating charge carriers to achieve a high photocatalytic efficiency. Accordingly, the MoSe2-bridged MoS2/CdS system produced effective hydrogen (193 mu mol.h(-1)) as that of water using lactic acid as a hole scavenger with the irradiation of solar light. The presence of few-layered MoSe2 bridges in MoS2/CdS successfully separates photogenerated charge carriers, thereby enhancing the shuttling of electrons on the surface to active edge sites. To the best of our knowledge, this few-layered MoSe2-bridged MoS2/CdS system exhibits the most effective concert among altogether-reported MoS2-based CdS composites. Notably, these findings with ample prospective for the development of enormously real photocatalytic systems are due to their economically viable and extraordinary efficiency.
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