自持CoWO4纳米阵列增强了亚硝酸盐对氨的电化学还原

IF 6.4 1区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Frontiers Pub Date : 2025-01-08 DOI:10.1039/D4QI02346C

Baofang Zhao, Qiuyue Chen, Jing Zhang, Xuguang An, Qian Liu, Lisi Xie, Xiaolei Li, Weitang Yao and Qingquan Kong

{"title":"自持CoWO4纳米阵列增强了亚硝酸盐对氨的电化学还原","authors":"Baofang Zhao, Qiuyue Chen, Jing Zhang, Xuguang An, Qian Liu, Lisi Xie, Xiaolei Li, Weitang Yao and Qingquan Kong","doi":"10.1039/D4QI02346C","DOIUrl":null,"url":null,"abstract":"The electrochemical reduction of nitrite (NO2−RR) is a novel and effective approach to achieving efficient NH3 electrosynthesis and wastewater purification, but the development of catalysts with high performance remains a challenge. In this study, we discovered that CoWO4 nanosheets grown on nickel foam (CoWO4/NF) exhibit excellent NO2−RR performance. In a neutral solution containing 0.1 M NO2−, CoWO4/NF showed a high NH3 yield of 18.856 mg h−1 cm−2 and a faradaic efficiency up to 95.2% at an optimum voltage of −0.7 V. Furthermore, the Zn–NO2− battery featuring CoWO4/NF as the cathode demonstrates a power density reaching 7.6 mW cm−2 and an impressive NH3 production rate of 2.855 mg h−1 cm−2.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":" 4","pages":" 1662-1668"},"PeriodicalIF":6.4000,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Self-supported CoWO4 nanoarrays enhance the electrochemical reduction of nitrite to ammonia†\",\"authors\":\"Baofang Zhao, Qiuyue Chen, Jing Zhang, Xuguang An, Qian Liu, Lisi Xie, Xiaolei Li, Weitang Yao and Qingquan Kong\",\"doi\":\"10.1039/D4QI02346C\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The electrochemical reduction of nitrite (NO2−RR) is a novel and effective approach to achieving efficient NH3 electrosynthesis and wastewater purification, but the development of catalysts with high performance remains a challenge. In this study, we discovered that CoWO4 nanosheets grown on nickel foam (CoWO4/NF) exhibit excellent NO2−RR performance. In a neutral solution containing 0.1 M NO2−, CoWO4/NF showed a high NH3 yield of 18.856 mg h−1 cm−2 and a faradaic efficiency up to 95.2% at an optimum voltage of −0.7 V. Furthermore, the Zn–NO2− battery featuring CoWO4/NF as the cathode demonstrates a power density reaching 7.6 mW cm−2 and an impressive NH3 production rate of 2.855 mg h−1 cm−2.\",\"PeriodicalId\":79,\"journal\":{\"name\":\"Inorganic Chemistry Frontiers\",\"volume\":\" 4\",\"pages\":\" 1662-1668\"},\"PeriodicalIF\":6.4000,\"publicationDate\":\"2025-01-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Inorganic Chemistry Frontiers\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/qi/d4qi02346c\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Chemistry Frontiers","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/qi/d4qi02346c","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}

引用次数: 0

摘要

电化学还原亚硝酸盐（NO2−RR）是实现NH3高效电合成和废水净化的一种新颖而有效的方法，但高性能催化剂的开发仍是一个挑战。在本研究中，我们发现在泡沫镍上生长的CoWO4纳米片（CoWO4/NF）具有优异的NO2−RR性能。在含有0.1 M NO2−的中性溶液中，CoWO4/NF在−0.7 V的最佳电压下，NH3产率高达18.856 mg h−1 cm−2，法拉第效率高达95.2%。此外，以CoWO4/NF为阴极的Zn - NO2 -电池的功率密度达到7.6 mW cm - 2， NH3的产率达到2.855 mg h - 1 cm - 2，令人印象深刻。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Self-supported CoWO4 nanoarrays enhance the electrochemical reduction of nitrite to ammonia†

查看原文本刊更多论文

Self-supported CoWO4 nanoarrays enhance the electrochemical reduction of nitrite to ammonia†

The electrochemical reduction of nitrite (NO₂⁻RR) is a novel and effective approach to achieving efficient NH₃ electrosynthesis and wastewater purification, but the development of catalysts with high performance remains a challenge. In this study, we discovered that CoWO₄ nanosheets grown on nickel foam (CoWO₄/NF) exhibit excellent NO₂⁻RR performance. In a neutral solution containing 0.1 M NO₂⁻, CoWO₄/NF showed a high NH₃ yield of 18.856 mg h⁻¹ cm⁻² and a faradaic efficiency up to 95.2% at an optimum voltage of −0.7 V. Furthermore, the Zn–NO₂⁻ battery featuring CoWO₄/NF as the cathode demonstrates a power density reaching 7.6 mW cm⁻² and an impressive NH₃ production rate of 2.855 mg h⁻¹ cm⁻².