Iron covalent doping in WB2 to boost its hydrogen evolution activity
文献类型：期刊论文
| 作者 | Jin, Meng2,3; Liu, Yanyan2,3 ; Wang, Jialu2,3; Zhang, Xian2,3; Han, Miaomiao1; Zhang, Yunxia2,3; Wang, Guozhong2,3; Zhang, Haimin2,3
|
| 刊名 | INORGANIC CHEMISTRY FRONTIERS
 |
| 出版日期 | 2021-12-08 |
| ISSN号 | 2052-1553 |
| DOI | 10.1039/d1qi01419f |
| 通讯作者 | Zhang, Xian(zhangxian158229@163.com) ; Han, Miaomiao(mmhan@zjhu.edu.cn) ; Zhang, Haimin(zhanghm@issp.ac.cn) |
| 英文摘要 | We report an iron covalent doping approach capable of effectively facilitating the hydrogen evolution reaction (HER) activity of tungsten boride (WB2). The results demonstrated that Fe-doped WB2 (Fe-WB2) can deliver high current densities of 10, 100 and 200 mA cm(-2) at low HER overpotentials of 68, 265 and 320 mV in 0.5 M H2SO4, respectively. The theoretical calculations unveiled that Fe doping provides high-efficiency HER activity sites, namely, Fe sites in Fe-WB2 (001) with the lowest H* adsorption free energy value of 0.324 eV and the lowest thermodynamic limiting potential of -1.102 V. Additionally, it was found that Fe-WB2 is also electrocatalytically active toward the nitrogen reduction reaction (NRR), with an NH3 yield rate of 35.5 mu g h(-1) mg(-1) at -0.15 V (vs. RHE) in 0.05 M H2SO4. This is ascribed to Fe doping in WB2 (001) decreasing the reaction free energy of the first hydrogenation reaction of the NRR from 0.837 to 0.732 eV and thus boosting the NRR activity of W sites, but the NRR selectivity is lower (faradaic efficiency of 0.78%) due to the superior HER of Fe-WB2. |
| WOS关键词 | BORON ; CARBON ; N-2 ; REDUCTION ; FIXATION ; SINGLE ; NH3 |
| 资助项目 | National Natural Science Foundation of China[51872292] ; National Natural Science Foundation of China[51902312] ; National Natural Science Foundation of China[61804154] ; Collaborative Innovation Program of Hefei Science Center, CAS[2019HSC-CIP009] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000732444200001 |
| 资助机构 | National Natural Science Foundation of China ; Collaborative Innovation Program of Hefei Science Center, CAS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126946]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Xian; Han, Miaomiao; Zhang, Haimin |
| 作者单位 | 1.Huzhou Univ, Sch Sci, Huzhou 313000, Zhejiang, Peoples R China 2.Chinese Acad Sci, Ctr Environm & Energy Nanomat,HFIPS, CAS Ctr Excellence Nanosci,Inst Solid State Phys, Key Lab Mat Phys,Anhui Key Lab Nanomat & Nanotech, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, Meng,Liu, Yanyan,Wang, Jialu,et al. Iron covalent doping in WB2 to boost its hydrogen evolution activity[J]. INORGANIC CHEMISTRY FRONTIERS,2021. |
| APA | Jin, Meng.,Liu, Yanyan.,Wang, Jialu.,Zhang, Xian.,Han, Miaomiao.,...&Zhang, Haimin.(2021).Iron covalent doping in WB2 to boost its hydrogen evolution activity.INORGANIC CHEMISTRY FRONTIERS. |
| MLA | Jin, Meng,et al."Iron covalent doping in WB2 to boost its hydrogen evolution activity".INORGANIC CHEMISTRY FRONTIERS (2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。