24小时热门版块排行榜    

查看: 918  |  回复: 2
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

罗马里奥

至尊木虫 (正式写手)

[交流] 均相银空位通过增强轨道杂化实现高电流、高选择性合成超纯CO 已有2人参与

河南大学李杰教授/陈珂教授、中南大学刘敏教授,联手在Nano Letters发表了题为“Homogeneous Vacancies-Enhanced Orbital Hybridization for Selective and Efficient CO2-to-CO Electrocatalysis”研究论文。

在这项工作中,通过电化学重构卤化银,实现了空位在银纳米颗粒内的均匀分布。表面银空位提供结合CO2和中间体的活性位点,而内部银空位则有助于优化电子结构。表面空位和内部空位的协同催化作用增强了银和中间体的轨道杂化,大幅度降低电催化还原CO2合成CO(ECO2RR-to-CO)的反应势垒,使得大面积电极(9 cm2)在7.5A的电流下能够以几乎100%的法拉第效率合成超纯CO(CO/H2法拉第效率比值为6932)。

文章链接:
https://pubs.acs.org/doi/10.1021/acs.nanolett.3c01905

期刊:
Nano Letters

DOI:
https://doi.org/10.1021/acs.nanolett.3c01905

题目:
Homogeneous Vacancies-Enhanced Orbital Hybridization for Selective and Efficient CO2-to-CO Electrocatalysis

作者:
Yuntong Qin, Guangming Zhan, Cun Tang, Di Yang, Xibo Wang, Jianhua Yang, Chengliang Mao, Zhentian Hao, Shuangyu Wang, Yixin Qin, Hongmei Li, Ke Chen*, Min Liu*, and Jie Li*

摘要:
Crafting vacancies offers an efficient route to upgrade the selectivity and productivity of nanomaterials for CO2 electroreduction. However, defective nanoelectrocatalysts bear catalytically active vacancies mostly on their surface, with the rest of the interior atoms adiaphorous for CO2-to-product conversion. Herein, taking nanosilver as a prototype, we arouse the catalytic ability of internal atoms by creating homogeneous vacancies realized via electrochemical reconstruction of silver halides. The homogeneous vacancies-rich nanosilver, compared to the surface vacancies-dominated counterpart, features a more positive d-band center to trigger an intensified hybridization of the Ag_d orbital with the C_P orbital of the *COOH intermediate, leading to an accelerated CO2-to-CO transformation. These structural and electronic merits allow a large-area (9 cm–2) electrode to generate nearly pure CO with a CO/H2 Faradaic efficiency ratio of 6932 at an applied current of 7.5 A. These findings highlight the potential of designing new-type defects in realizing the industrialization of electrocatalytic CO2 reduction.
回复此楼
只要努力一切皆有可能
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

梦想,,

木虫 (著名写手)

3楼2023-12-27 23:27:47
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 3 个回答

甜甜小布丁

木虫 (著名写手)

Believe your-self and be assiduous.
2楼2023-10-13 11:08:39
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 304分材料专硕求调剂 +11 qiuzhigril 2026-03-03 14/700 2026-03-05 09:30 by vfdbghn
[考研] 376求调剂 +3 王浩然sam 2026-03-04 3/150 2026-03-05 07:48 by bxbo
[考研] 调剂材料学硕 +6 词凝Y 2026-03-02 6/300 2026-03-05 07:10 by 昆工985
[考研] 293求调剂 +3 是乐渝哇 2026-03-04 3/150 2026-03-04 23:12 by wutongshun
[考研] 一志愿中石油,化学工程,301求调剂 +3 豚馒枳枳 2026-03-04 3/150 2026-03-04 18:32 by houyaoxu
[考研] 0857求调剂 +4 CDDD1013 2026-03-04 4/200 2026-03-04 16:08 by zhukairuo
[考研] 289求调剂 +8 yang婷 2026-03-02 10/500 2026-03-04 09:10 by 无际的草原
[考研] 材料工程269求调剂 +7 白刺玫 2026-03-02 7/350 2026-03-04 08:47 by zhyzzh
[考研] 化工专硕调剂 +4 利好利好. 2026-03-03 7/350 2026-03-03 21:30 by L135790
[考研] 298求调剂一志愿中海洋 +3 lour. 2026-03-03 3/150 2026-03-03 20:41 by gxg2025
[考研] 276求调剂 +8 路lyh123 2026-02-28 10/500 2026-03-03 18:25 by xin吖
[考研] 290求调剂 +9 ErMiao1020 2026-03-02 9/450 2026-03-03 18:03 by linlonghao
[考研] 292求调剂 +3 sgbl 2026-03-03 3/150 2026-03-03 17:30 by barlinike
[考研] 0805总分292,求调剂 +12 幻想之殇 2026-03-01 12/600 2026-03-03 15:58 by tgxtgxtgx9
[考研] 307求调剂 +6 wyyyqx 2026-03-01 6/300 2026-03-03 09:24 by 2235787770
[考研] 306分材料调剂 +5 chuanzhu川烛 2026-03-01 6/300 2026-03-02 19:51 by 张晓芳0105
[考研] 材料工程274求调剂 +5 Lilithan 2026-03-01 5/250 2026-03-02 19:39 by caszguilin
[考研] 275求调剂 +7 明远求学 2026-03-01 7/350 2026-03-02 19:22 by zhukairuo
[基金申请] 此成果不能导入原因:元数据必填信息不完整,可 进行补充。 +4 Kittylucky 2026-03-02 5/250 2026-03-02 11:07 by jurkat.1640
[考研] 328求调剂 +3 aaadim 2026-03-01 5/250 2026-03-01 17:29 by njzyff
信息提示
请填处理意见