Hui-Juan Zhang*, Bo Chen, Xiaoxiong Feng, Miaomiao Yu, Jiangyu Luo and Yuhua Xue*,
{"title":"以掺杂 N 的碳为载体的 CoFeZn 纳米粒子作为氧还原和氧进化的双功能催化剂","authors":"Hui-Juan Zhang*, Bo Chen, Xiaoxiong Feng, Miaomiao Yu, Jiangyu Luo and Yuhua Xue*, ","doi":"10.1021/acsanm.4c0429110.1021/acsanm.4c04291","DOIUrl":null,"url":null,"abstract":"<p >Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are two important reactions in clean energy conversion devices. It is necessary to develop nonprecious metal-based bifunctional catalysts for ORR and OER. In this work, a multimetal bifunctional catalyst, nanoparticles of trimetallic CoFeZn supported on N-doped carbon (CoFeZn/NC), is prepared by one-step carbonizing the mixture of M-ZIFs (M = Fe, Co, and Zn), carbon black, and melamine. CoFeZn/NC has a more mesoporous structure and a higher specific surface area of 1029.6 m<sup>2</sup>/g compared to FeCo/NC, which is attributed to the easy volatilization of Zn at high temperatures. It also has high contents of pyridinic N (35.8%) and pyrrolic N (31.1%), abundant metal active sites, and exhibits strong synergistic effects between these nanoparticles of metals. Better than the single-metal catalysts (Co/NC, Fe/NC, and Zn/NC) and bimetallic catalysts (CoFe/NC, FeZn/NC, and CoZn/NC), CoFeZn/NC has an ORR peak potential of 0.90 V (vs. RHE) and a half-wave potential of 0.87 V (vs. RHE) in 0.1 M KOH solution, and exhibits excellent stability and methanol resistance. For OER, CoFeZn/NC has the lowest overpotential of 319.9 mV at a current density of 10 mA/cm<sup>2</sup> and a Tafel slope of 82.47 mV dec<sup>–1</sup>.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 19","pages":"23054–23061 23054–23061"},"PeriodicalIF":5.3000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nanoparticles of CoFeZn Supported on N-Doped Carbon as Bifunctional Catalysts for Oxygen Reduction and Oxygen Evolution\",\"authors\":\"Hui-Juan Zhang*, Bo Chen, Xiaoxiong Feng, Miaomiao Yu, Jiangyu Luo and Yuhua Xue*, \",\"doi\":\"10.1021/acsanm.4c0429110.1021/acsanm.4c04291\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are two important reactions in clean energy conversion devices. It is necessary to develop nonprecious metal-based bifunctional catalysts for ORR and OER. In this work, a multimetal bifunctional catalyst, nanoparticles of trimetallic CoFeZn supported on N-doped carbon (CoFeZn/NC), is prepared by one-step carbonizing the mixture of M-ZIFs (M = Fe, Co, and Zn), carbon black, and melamine. CoFeZn/NC has a more mesoporous structure and a higher specific surface area of 1029.6 m<sup>2</sup>/g compared to FeCo/NC, which is attributed to the easy volatilization of Zn at high temperatures. It also has high contents of pyridinic N (35.8%) and pyrrolic N (31.1%), abundant metal active sites, and exhibits strong synergistic effects between these nanoparticles of metals. Better than the single-metal catalysts (Co/NC, Fe/NC, and Zn/NC) and bimetallic catalysts (CoFe/NC, FeZn/NC, and CoZn/NC), CoFeZn/NC has an ORR peak potential of 0.90 V (vs. RHE) and a half-wave potential of 0.87 V (vs. RHE) in 0.1 M KOH solution, and exhibits excellent stability and methanol resistance. For OER, CoFeZn/NC has the lowest overpotential of 319.9 mV at a current density of 10 mA/cm<sup>2</sup> and a Tafel slope of 82.47 mV dec<sup>–1</sup>.</p>\",\"PeriodicalId\":6,\"journal\":{\"name\":\"ACS Applied Nano Materials\",\"volume\":\"7 19\",\"pages\":\"23054–23061 23054–23061\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Nano Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsanm.4c04291\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.4c04291","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Nanoparticles of CoFeZn Supported on N-Doped Carbon as Bifunctional Catalysts for Oxygen Reduction and Oxygen Evolution
Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are two important reactions in clean energy conversion devices. It is necessary to develop nonprecious metal-based bifunctional catalysts for ORR and OER. In this work, a multimetal bifunctional catalyst, nanoparticles of trimetallic CoFeZn supported on N-doped carbon (CoFeZn/NC), is prepared by one-step carbonizing the mixture of M-ZIFs (M = Fe, Co, and Zn), carbon black, and melamine. CoFeZn/NC has a more mesoporous structure and a higher specific surface area of 1029.6 m2/g compared to FeCo/NC, which is attributed to the easy volatilization of Zn at high temperatures. It also has high contents of pyridinic N (35.8%) and pyrrolic N (31.1%), abundant metal active sites, and exhibits strong synergistic effects between these nanoparticles of metals. Better than the single-metal catalysts (Co/NC, Fe/NC, and Zn/NC) and bimetallic catalysts (CoFe/NC, FeZn/NC, and CoZn/NC), CoFeZn/NC has an ORR peak potential of 0.90 V (vs. RHE) and a half-wave potential of 0.87 V (vs. RHE) in 0.1 M KOH solution, and exhibits excellent stability and methanol resistance. For OER, CoFeZn/NC has the lowest overpotential of 319.9 mV at a current density of 10 mA/cm2 and a Tafel slope of 82.47 mV dec–1.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.