{"title":"Ni纳米粒子修饰Cu纳米线增强电催化去除硝酸盐的研究","authors":"Yiyang Feng, Xiaoqing Liu, Zhehan Yi, Haotian Tan, Liqun Wang, Feng Hou, Ji Liang","doi":"10.1680/jsuin.22.00040","DOIUrl":null,"url":null,"abstract":"Cu-based materials have been extensively studied for nitrate removal as an inexpensive and abundant electrocatalyst for water purification via the nitrate reduction reaction (NO3RR). But it typically suffers from nitrite accumulation due to the high selectivity towards nitrite formation. To address this issue, we herein report a strategy of modifying Cu nanowires with Ni nanoparticles to improve the NO3RR performance. The Ni nanoparticles both facilitate electron transfer from Ni to Cu and enhance the conversion of nitrite, thereby improving the overall removal of nitrate with a minimal yield of nitrite. Through a facile liquid phase deposition process, the loading amount of Ni nanoparticles can be easily tailored by simply changing the concentration of precursors, and the best Cu/Ni molar ratio for nitrate removal performance is 20. Under this ratio, the material simultaneously delivers a high nitrate removal rate of 92.2% and a low nitrite selectivity of only 2.2% at –0.9 V vs. reversible hydrogen electrode, accompanied with superior stability for a continuous NO3RR. This study thus offers an efficient, stable, and low-cost Cu-Ni bimetallic catalyst for NO3RR.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Ni nanoparticles modified Cu nanowires for enhanced electrocatalytic nitrate removal\",\"authors\":\"Yiyang Feng, Xiaoqing Liu, Zhehan Yi, Haotian Tan, Liqun Wang, Feng Hou, Ji Liang\",\"doi\":\"10.1680/jsuin.22.00040\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Cu-based materials have been extensively studied for nitrate removal as an inexpensive and abundant electrocatalyst for water purification via the nitrate reduction reaction (NO3RR). But it typically suffers from nitrite accumulation due to the high selectivity towards nitrite formation. To address this issue, we herein report a strategy of modifying Cu nanowires with Ni nanoparticles to improve the NO3RR performance. The Ni nanoparticles both facilitate electron transfer from Ni to Cu and enhance the conversion of nitrite, thereby improving the overall removal of nitrate with a minimal yield of nitrite. Through a facile liquid phase deposition process, the loading amount of Ni nanoparticles can be easily tailored by simply changing the concentration of precursors, and the best Cu/Ni molar ratio for nitrate removal performance is 20. Under this ratio, the material simultaneously delivers a high nitrate removal rate of 92.2% and a low nitrite selectivity of only 2.2% at –0.9 V vs. reversible hydrogen electrode, accompanied with superior stability for a continuous NO3RR. This study thus offers an efficient, stable, and low-cost Cu-Ni bimetallic catalyst for NO3RR.\",\"PeriodicalId\":22032,\"journal\":{\"name\":\"Surface Innovations\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2022-04-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Surface Innovations\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1680/jsuin.22.00040\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface Innovations","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1680/jsuin.22.00040","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Ni nanoparticles modified Cu nanowires for enhanced electrocatalytic nitrate removal
Cu-based materials have been extensively studied for nitrate removal as an inexpensive and abundant electrocatalyst for water purification via the nitrate reduction reaction (NO3RR). But it typically suffers from nitrite accumulation due to the high selectivity towards nitrite formation. To address this issue, we herein report a strategy of modifying Cu nanowires with Ni nanoparticles to improve the NO3RR performance. The Ni nanoparticles both facilitate electron transfer from Ni to Cu and enhance the conversion of nitrite, thereby improving the overall removal of nitrate with a minimal yield of nitrite. Through a facile liquid phase deposition process, the loading amount of Ni nanoparticles can be easily tailored by simply changing the concentration of precursors, and the best Cu/Ni molar ratio for nitrate removal performance is 20. Under this ratio, the material simultaneously delivers a high nitrate removal rate of 92.2% and a low nitrite selectivity of only 2.2% at –0.9 V vs. reversible hydrogen electrode, accompanied with superior stability for a continuous NO3RR. This study thus offers an efficient, stable, and low-cost Cu-Ni bimetallic catalyst for NO3RR.
Surface InnovationsCHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
5.80
自引率
22.90%
发文量
66
期刊介绍:
The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace.
Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.