Vanadium-regulated nickel phosphide nanosheets for electrocatalytic sulfion upgrading and hydrogen production

IF 7.6 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chemical Science Pub Date : 2024-11-28 DOI:10.1039/d4sc06804a

Rui-Qing Li, Xiaojun Wang, Shuixiang Xie, Songyun Guo, Zhe Cao, Zhenhao Yan, Wei Zhang, Xiaoyu Wan

{"title":"Vanadium-regulated nickel phosphide nanosheets for electrocatalytic sulfion upgrading and hydrogen production","authors":"Rui-Qing Li, Xiaojun Wang, Shuixiang Xie, Songyun Guo, Zhe Cao, Zhenhao Yan, Wei Zhang, Xiaoyu Wan","doi":"10.1039/d4sc06804a","DOIUrl":null,"url":null,"abstract":"Electrochemical sulfion oxidation reaction (SOR) is highly desirable to treat sulfion-rich wastewater and achieve energy-saving hydrogen production when coupling with cathodic hydrogen evolution reaction (HER). Herein, we propose a thermodynamically favorable SOR to couple with HER, and develop vanadium-doped nickel phosphide (V-Ni2P) nanosheets for simultaneous achieving energy-efficient hydrogen production and sulfur recovery. The V doping can efficiently adjust electronic structure and improve intrinsic activity of Ni2P, which exhibits outstanding electrocatalytic performances for HER and SOR with low potentials of -0.093 and 0.313 V to afford 10 mA cm-2. Remarkably, the assembled V-Ni2P-based hybrid water electrolyzer coupling HER with SOR requires small cell voltages of 0.389 and 0.834 V at 10 and 300 mA cm-2, lower than these required in the traditional water electrolysis system (1.5 and 1.969 V), realizing low-cost sulfion upgrading to value-added sulfur and hydrogen generation. This work provides an approach for energy-saving hydrogen production and toxic waste degradation.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"24 1","pages":""},"PeriodicalIF":7.6000,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Science","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d4sc06804a","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Electrochemical sulfion oxidation reaction (SOR) is highly desirable to treat sulfion-rich wastewater and achieve energy-saving hydrogen production when coupling with cathodic hydrogen evolution reaction (HER). Herein, we propose a thermodynamically favorable SOR to couple with HER, and develop vanadium-doped nickel phosphide (V-Ni2P) nanosheets for simultaneous achieving energy-efficient hydrogen production and sulfur recovery. The V doping can efficiently adjust electronic structure and improve intrinsic activity of Ni2P, which exhibits outstanding electrocatalytic performances for HER and SOR with low potentials of -0.093 and 0.313 V to afford 10 mA cm-2. Remarkably, the assembled V-Ni2P-based hybrid water electrolyzer coupling HER with SOR requires small cell voltages of 0.389 and 0.834 V at 10 and 300 mA cm-2, lower than these required in the traditional water electrolysis system (1.5 and 1.969 V), realizing low-cost sulfion upgrading to value-added sulfur and hydrogen generation. This work provides an approach for energy-saving hydrogen production and toxic waste degradation.

查看原文本刊更多论文

用于电催化硫离子升级和制氢的钒调节磷化镍纳米片

电化学亚硫酰氧化反应（SOR）与阴极氢进化反应（HER）耦合后，可用于处理富含亚硫酰的废水并实现节能制氢。在此，我们提出了一种热力学上有利于与 HER 发生耦合的 SOR，并开发了掺钒磷化镍（V-Ni2P）纳米片，可同时实现高能效制氢和硫回收。掺杂钒能有效调整 Ni2P 的电子结构并提高其内在活性，使其在 -0.093 V 和 0.313 V 的低电位下对 HER 和 SOR 表现出卓越的电催化性能，可达到 10 mA cm-2。值得注意的是，在 10 mA cm-2 和 300 mA cm-2 的条件下，组装好的基于 V-Ni2P 的 HER 与 SOR 混合水电解槽只需 0.389 V 和 0.834 V 的小电位，低于传统水电解系统所需的电位（1.5 V 和 1.969 V），从而实现了低成本硫磺升级为高附加值硫磺和氢气的生成。这项工作为节能制氢和有毒废物降解提供了一种方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Science CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

4.80%

发文量

1352

审稿时长

2.1 months

期刊介绍： Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.