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2D Semiconductor Bi 2 WO 6 Nanosheets as the Pt Carriers for Ethylene Glycol Oxidation Reaction with Photoelectric Interaction
Author(s) -
Gao Haifeng,
Zhai Chunyang,
Zhang Hongmin,
Fu Nianqing,
Du Yukou,
Zhu Mingshan
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201900253
Subject(s) - ethylene glycol , materials science , visible spectrum , photocatalysis , tungstate , electrode , platinum , photocurrent , catalysis , bismuth , semiconductor , photochemistry , chemical engineering , optoelectronics , chemistry , organic chemistry , metallurgy , engineering
Ethylene glycol oxidation reaction (EGOR) is a key anode reaction in direct ethylene glycol fuel cells (DEGFCs). Herein, 2D semiconductor bismuth tungstate (Bi 2 WO 6 ) nanosheets are facilely prepared and used as carriers for the deposition of platinum nanoparticles (Pt NPs). The resultant material is used as the working electrode in the application of DEGFCs. Due to the excellent absorption property of Bi 2 WO 6 in visible light, the optimized Pt‐Bi 2 WO 6 electrode (Pt at 20 wt%) shows improved catalytic activity and stability with visible‐light illumination. The current density using the Pt‐Bi 2 WO 6 electrode reaches 492.5 mA mg −1 Pt with visible‐light irradiation, which is about 4.2 fold higher in comparison with the same electrode in dark conditions. This 2D sheet‐like support, together with the visible‐light response of Bi 2 WO 6 , induces the deposition of ultra‐small sizes of Pt (5.4 nm) and the synergistic effect of electrocatalytic and photocatalytic ethylene glycol oxidation, thus greatly improving the photoelectric catalytic property of EGOR.