Newly Found Photoactivated Pt Anchored on Three-Dimensional Layered WS2/Carbon Cloth for Highly Efficient Ethylene Glycol Electro-Oxidation,Industrial & Engineering Chemistry Research

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Newly Found Photoactivated Pt Anchored on Three-Dimensional Layered WS2/Carbon Cloth for Highly Efficient Ethylene Glycol Electro-Oxidation
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-10-16 , DOI: 10.1021/acs.iecr.0c03436
Xuandong Wang ₁ , Haifeng Gao ₂ , Chunyang Zhai _{1,

2} , Zhilong He ₂ , Chen Yuan ₂ , Mingshan Zhu ₁

Affiliation

The study on ethylene glycol electro-oxidation has attracted great attention due to it as a key anode reaction in direct ethylene glycol fuel cells (DEGFCs). In this paper, layered WS₂ nanosheets are grown on a carbon cloth (CC) and then act as a three-dimensional (3D) flexible electrode for depositing Pt nanoparticles on WS₂/CC by the electrodeposition technique. The as-prepared 3D Pt-WS₂/CC electrode (9931 mA mg_Pt^–1) shows 4.84 and 17.3 times enhanced electrocatalytic activity toward ethylene glycol (EG) electro-oxidation, compared with Pt direct deposited CC electrode (Pt/CC, 2050 mA mg_Pt^–1) and commercial Pt/C electrode (575 mA mg_Pt^–1), respectively. Interestingly, when 3D Pt-WS₂/CC electrode is exposed to visible light irradiation, the forward sweep current density of EG oxidation is increased to 16 980 mA mg_Pt^–1, which is 29.5 times that of the Pt/C electrode under ambient condition. The cycling stability and chronoamperometric results also indicate that the electrocatalytic stabilities of 3D Pt-WS₂/CC electrode are improved by visible light illumination. The excellent electrochemical performances and low-cost characteristics make these 3D flexible nanocomposite electrodes have great prospects in traditional electrocatalytic reactions with the aid of solar light illumination.

中文翻译：

新发现的光活化Pt锚固在三维分层WS ₂ /碳布上，用于高效乙二醇电氧化

由于乙二醇作为直接乙二醇燃料电池（DEGFCs）的关键阳极反应，对乙二醇电氧化的研究引起了极大的关注。在本文中，分层的WS ₂纳米片生长在碳布（CC）上，然后充当三维（3D）柔性电极，通过电沉积技术在WS ₂ / CC上沉积Pt纳米颗粒。制备的3D Pt-WS ₂ / CC电极（9931 mA mg _Pt^–1）与Pt直接沉积CC电极（Pt / CC）相比，对乙二醇（EG）电氧化的电催化活性提高了4.84和17.3倍2050 mA mg _Pt^–1）和商用Pt / C电极（575 mA mg _Pt^–1），分别。有趣的是，当3D Pt-WS ₂ / CC电极暴露于可见光照射下时，EG氧化的正向扫描电流密度增加到16 980 mA mg _Pt^–1，这是室温下Pt / C电极的29.5倍健康）状况。循环稳定性和计时电流法结果还表明3D Pt-WS ₂ / CC电极的电催化稳定性通过可见光照射得以改善。优异的电化学性能和低成本特性使这些3D柔性纳米复合电极在借助太阳光的传统电催化反应中具有广阔的前景。

更新日期：2020-10-29

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