Metal-organic framework (MOF) thickness control for carbon dioxide electroreduction to formate

Zhihao Nie, Licheng Yu, Lili Jiang, Ming Li, Shan Ding, Baokai Xia, Chi Cheng, Jingjing Duan, Sheng Chen
{"title":"Metal-organic framework (MOF) thickness control for carbon dioxide electroreduction to formate","authors":"Zhihao Nie,&nbsp;Licheng Yu,&nbsp;Lili Jiang,&nbsp;Ming Li,&nbsp;Shan Ding,&nbsp;Baokai Xia,&nbsp;Chi Cheng,&nbsp;Jingjing Duan,&nbsp;Sheng Chen","doi":"10.1002/cnl2.66","DOIUrl":null,"url":null,"abstract":"<p>Decreasing particle size (like thickness) is a common strategy to enhance the activities of catalysts. In this work, we have synthesized two coppers, which are bismuth-based metal-organic framework (CuBi-MOF) catalysts with different thicknesses (134.8 and 2.0 nm). In contrast to common expectations, large thickness CuBi-MOF has exhibited superior activities as a comparison to its small-thickness counterpart in terms of carbon dioxide electroreduction to produce formate, characteristic of high selectivity (Faraday efficiency &gt; 90%), a wide window of potential (−0.6 to −1.6 V vs. reversible hydrogen electrode), and large current densities (up to −380 mA cm<sup>−2</sup>). The mechanism study has been performed by using density functional theory calculations, which highlight the strong synergic effect between Cu and Bi sites in large-thickness CuBi-MOF for activating CO<sub>2</sub> molecules. Consequently, large-thickness CuBi-MOF could show smaller Gibbs free energies compared to its small counterpart for binding with reaction intermediate (*COOH, 1.1 vs. 1.8 eV). The result of this work could provide new insights into catalyst design toward a number of electrochemical systems.</p>","PeriodicalId":100214,"journal":{"name":"Carbon Neutralization","volume":"2 4","pages":"458-466"},"PeriodicalIF":0.0000,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnl2.66","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon Neutralization","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cnl2.66","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Decreasing particle size (like thickness) is a common strategy to enhance the activities of catalysts. In this work, we have synthesized two coppers, which are bismuth-based metal-organic framework (CuBi-MOF) catalysts with different thicknesses (134.8 and 2.0 nm). In contrast to common expectations, large thickness CuBi-MOF has exhibited superior activities as a comparison to its small-thickness counterpart in terms of carbon dioxide electroreduction to produce formate, characteristic of high selectivity (Faraday efficiency > 90%), a wide window of potential (−0.6 to −1.6 V vs. reversible hydrogen electrode), and large current densities (up to −380 mA cm−2). The mechanism study has been performed by using density functional theory calculations, which highlight the strong synergic effect between Cu and Bi sites in large-thickness CuBi-MOF for activating CO2 molecules. Consequently, large-thickness CuBi-MOF could show smaller Gibbs free energies compared to its small counterpart for binding with reaction intermediate (*COOH, 1.1 vs. 1.8 eV). The result of this work could provide new insights into catalyst design toward a number of electrochemical systems.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
二氧化碳电还原制甲酸盐的金属有机骨架(MOF)厚度控制
减小颗粒尺寸(如厚度)是提高催化剂活性的常用策略。在这项工作中,我们合成了两种铜,它们是不同厚度(134.8和2.0)的铋基金属有机骨架(CuBi-MOF)催化剂 nm)。与常见的预期相反,与小厚度的CuBi-MOF相比,大厚度的CuBi-MOF在二氧化碳电还原生产甲酸盐方面表现出优异的活性,具有高选择性(法拉第效率 >; 90%),一个宽的电位窗口(−0.6至−1.6 V与可逆氢电极),以及大电流密度(高达−380 毫安 cm−2)。利用密度泛函理论计算进行了机理研究,突出了大厚度CuBi-MOF中Cu和Bi位点对CO2分子活化的强协同作用。因此,对于与反应中间体的结合,与小的对应物相比,大厚度的CuBi-MOF可以显示出更小的吉布斯自由能(*COOH,1.1对1.8 eV)。这项工作的结果可以为许多电化学系统的催化剂设计提供新的见解。
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 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Issue Information Front Cover: Carbon Neutralization, Volume 3, Issue 6, November 2024 Inside Back Cover Image: Carbon Neutralization, Volume 3, Issue 6, November 2024 Back Cover Image: Carbon Neutralization, Volume 3, Issue 6, November 2024 A chronicle of titanium niobium oxide materials for high-performance lithium-ion batteries: From laboratory to industry
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1