A Novel MoSe2–Reduced Graphene Oxide/Polyimide Composite Film for Applications in Electrocatalysis and Photoelectrocatalysis Hydrogen Evolution. (5th September 2014)

• Record Type: Journal Article
• Authors: Jia, Lingpu; Sun, Xiao; Jiang, Yimin; Yu, Shenjiao; Wang, Chunming
• Is Part Of: Advanced functional materials. Volume 25:Number 12(2015)
• Page Start: 1814
• Page End: 1820
• Publication Date: 2014-09-05
• Subjects: MoSe2 -- rGO/PI -- hydrogen evolution -- photoelectrocatalysis; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201401814
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract : Promising catalytic activity of MoSe2 in the hydrogen evolution reaction (HER) is synthesized on a new reduced graphene oxide/polyimide (rGO/PI) substrate by a simple electrochemical method. The MoSe2 nanoparticles have excellent photo‐responsive properties; the potential difference could reach 0.45 V with the photo‐responsive time just 0.6 s. Furthermore, MoSe2 thin film exhibits superior catalytic activity in the hydrogen evolution reaction (HER). It has a greater cathode current at more positive potential compared to other MoSe2 and MoS2, and the efficiency of H2 evolution is strongly influenced by illumination; this suggests that MoSe2 composite film has good photoelectrocatalysis properties for hydrogen evolution. Besides, both dark and illumination MoSe2 films exhibit extremely high stability in acidic solution as the HER catalytic activity shows no degradation after 100 cycles for two hours. All results indicate that MoSe2 –rGO/PI composite film has potential to be a better catalyst for HER. Abstract : The cathodic current of a MoSe2 –rGO/PI composite film hardly decreases at −0.6 V compared to SCE by current density versus time curves, both illuminated and dark, illustrating how it possesses high stability and sufficient cathodic current density. These properties show its potential as a better catalyst for hydrogen evolution reaction, and even solar‐driven hydrogen evolution.