Visible‐Light‐Improved Catalytic Performance for Methanol Oxidation Based on Plasmonic PtAu Dendrites,ChemElectroChem

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Visible‐Light‐Improved Catalytic Performance for Methanol Oxidation Based on Plasmonic PtAu Dendrites
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-02-15 , DOI: 10.1002/celc.201701345
Hui Xu ₁ , Pingping Song ₁ , Jin Wang ₁ , Fei Gao ₁ , Yangping Zhang ₁ , Jun Guo ₂ , Yukou Du ₁ , Junwei Di ₁

Affiliation

Rapid consumption of traditional fossil fuels and increasing energy demand have stimulated attention in utilizing solar energy. However, the lack of highly efficient photocatalysts remains a challenge for their large‐scale development. Plasmonic modification of metallic nanostructures have aroused extensive research interest, which can efficiently convert solar energy into chemical energy. We, herein, design a new class of surface plasmon resonance (SPR) promoted dendritic PtAu photoelectrocatalysts, taking advantage of visible light to enhance the electrocatalytic performances towards methanol oxidation. In virtue of the synergistic effect between Pt and Au, the resultant PtAu dendrites show an unprecedentedly high electrocatalytic activity of 2262.1 mA mg⁻¹ towards methanol oxidation, which is 9.7 times higher than that of the commercial Pt/C. More interestingly, the SPR effect also caused the Pt₁Ag₁ nanocatalyst under visible‐light irradiation to display a 1.8‐fold enhancement in catalytic activity compared to that under dark conditions, showing great promise for serving as highly efficient photoelectrocatalysts for liquid fuel oxidation and beyond.

中文翻译：

基于等离子PtAu枝晶的可见光改善的甲醇氧化催化性能

传统化石燃料的快速消耗和不断增长的能源需求已激发了人们对利用太阳能的关注。但是，缺乏高效的光催化剂仍然是对其大规模开发的挑战。金属纳米结构的等离子体改性引起了广泛的研究兴趣，可以有效地将太阳能转化为化学能。我们在本文中设计了一种新型的表面等离振子共振（SPR）促进的树枝状PtAu光电催化剂，利用可见光增强了对甲醇氧化的电催化性能。由于Pt和Au之间的协同作用，所得的PtAu树突显示出前所未有的2262.1 mA mg ^-1的高电催化活性。甲醇氧化，比市售Pt / C高9.7倍。更有趣的是，SPR效应还使Pt ₁ Ag ₁纳米催化剂在可见光照射下的催化活性比在黑暗条件下的催化活性提高了1.8倍，显示出有望用作液体燃料氧化和分离的高效光电催化剂。超过。

更新日期：2018-02-15

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