Promotion of nitrate reduction reaction activity by Co3O4@MoS2 Particle-Support system

IF 4.5 3区化学 Q1 Chemical Engineering

Journal of Electroanalytical Chemistry Pub Date : 2023-08-07 DOI:10.1016/j.jelechem.2023.117702

Yanli Zhang, Jiuqing Xiong, Shihai Yan, Bingping Liu

{"title":"Promotion of nitrate reduction reaction activity by Co3O4@MoS2 Particle-Support system","authors":"Yanli Zhang, Jiuqing Xiong, Shihai Yan, Bingping Liu","doi":"10.1016/j.jelechem.2023.117702","DOIUrl":null,"url":null,"abstract":"<div>Electrochemical reduction of nitrate to NH3 is a very promising alternative reaction to the Haber-Bosch process, and it is necessary to develop the efficient electrocatalysts. In this study, a particle-support mode Co3O4 catalyst was synthesized with ZIF-67 as the precursor, and then dispersed on MoS2 nanoflowers by hydrothermal method. The Co3O4 is anchored to MoS2 by forming Co-S coordination bond. Furthermore, the particle-supported Co3O4 exhibits better performance than Co3O4 alone, as is manifested by higher Faradaic efficiencies and NH3 yield rate at − 0.64 V (52.69% vs 32.03%; 4539.61 μg h−1 mg−1cat vs 2048.63 μg h−1 mg−1cat), lower energy barriers (0.96 eV vs 1.19 eV), and better electronic conductivity (Bandwidth: 0.581 eV vs 0.613 eV). In addition, this research provides an effective solution to solve the aggregation problem of metal oxide nanoparticles.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117702"},"PeriodicalIF":4.5000,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electroanalytical Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1572665723005623","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Chemical Engineering","Score":null,"Total":0}

引用次数: 0

Abstract

Electrochemical reduction of nitrate to NH₃ is a very promising alternative reaction to the Haber-Bosch process, and it is necessary to develop the efficient electrocatalysts. In this study, a particle-support mode Co₃O₄ catalyst was synthesized with ZIF-67 as the precursor, and then dispersed on MoS₂ nanoflowers by hydrothermal method. The Co₃O₄ is anchored to MoS₂ by forming Co-S coordination bond. Furthermore, the particle-supported Co₃O₄ exhibits better performance than Co₃O₄ alone, as is manifested by higher Faradaic efficiencies and NH₃ yield rate at − 0.64 V (52.69% vs 32.03%; 4539.61 μg h⁻¹ mg⁻¹_cat vs 2048.63 μg h⁻¹ mg⁻¹_cat), lower energy barriers (0.96 eV vs 1.19 eV), and better electronic conductivity (Bandwidth: 0.581 eV vs 0.613 eV). In addition, this research provides an effective solution to solve the aggregation problem of metal oxide nanoparticles.

查看原文本刊更多论文

Co3O4@MoS2颗粒-载体体系对硝酸还原反应活性的促进作用

电化学还原硝态氮为NH3是一种很有前途的替代Haber-Bosch法的反应，有必要开发高效的电催化剂。本研究以ZIF-67为前驱体合成了一种颗粒支撑型Co3O4催化剂，并通过水热法将其分散在MoS2纳米花上。Co3O4通过形成Co-S配位键锚定在MoS2上。此外，颗粒负载的Co3O4比单独的Co3O4表现出更好的性能，表现在- 0.64 V时更高的法拉第效率和NH3产率(52.69% vs 32.03%;4539.61 μg h−1 mg−1cat vs 2048.63 μg h−1 mg−1cat)，更低的能垒(0.96 eV vs 1.19 eV)和更好的电子导电性(带宽:0.581 eV vs 0.613 eV)。此外，本研究为解决金属氧化物纳米颗粒的聚集问题提供了有效的解决方案。

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

Journal of Electroanalytical Chemistry Chemical Engineering-General Chemical Engineering

CiteScore

7.50

自引率

6.70%

发文量

912

审稿时长

>12 weeks

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.