2D Semiconductor Bi2WO6 Nanosheets as the Pt Carriers for Ethylene Glycol Oxidation Reaction with Photoelectric Interaction

IF 3.6 4区工程技术 Q3 ENERGY & FUELS Energy technology Pub Date : 2019-04-25 DOI:10.1002/ente.201900253

Haifeng Gao, Chunyang Zhai, Hongmin Zhang, Nianqing Fu, Yukou Du, Mingshan Zhu

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引用次数: 6

Abstract

Ethylene glycol oxidation reaction (EGOR) is a key anode reaction in direct ethylene glycol fuel cells (DEGFCs). Herein, 2D semiconductor bismuth tungstate (Bi₂WO₆) 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 Bi₂WO₆ in visible light, the optimized Pt-Bi₂WO₆ electrode (Pt at 20 wt%) shows improved catalytic activity and stability with visible-light illumination. The current density using the Pt-Bi₂WO₆ 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 Bi₂WO₆, 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.

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二维半导体Bi2WO6纳米片作为光电作用下乙二醇氧化反应的Pt载体

乙二醇氧化反应(EGOR)是直接乙二醇燃料电池(DEGFCs)中关键的阳极反应。本文制备了二维半导体钨酸铋(Bi2WO6)纳米片，并将其用作铂纳米粒子(Pt NPs)沉积的载体。所得材料在DEGFCs的应用中用作工作电极。由于Bi2WO6在可见光下具有优异的吸收性能，优化后的Pt-Bi2WO6电极(Pt浓度为20 wt%)在可见光下表现出更高的催化活性和稳定性。在可见光照射下，Pt-Bi2WO6电极的电流密度达到492.5 mA mg−1Pt，比相同电极在黑暗条件下的电流密度提高了约4.2倍。这种二维片状载体与Bi2WO6的可见光响应共同诱导了超小尺寸Pt (5.4 nm)的沉积以及电催化和光催化乙二醇氧化的协同效应，从而大大提高了EGOR的光电催化性能。

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来源期刊

Energy technology ENERGY & FUELS-

CiteScore

7.00

自引率

5.30%

发文量

审稿时长

1.3 months

期刊介绍： Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy. This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g., new concepts of energy generation and conversion; design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers; improvement of existing processes; combination of single components to systems for energy generation; design of systems for energy storage; production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels; concepts and design of devices for energy distribution.