| 负载银颗粒金属有机框架催化剂的合成及其电催化CO2还原性能 | |
| Synthesis and electrocatalytic CO2 reduction performance of metal-organic framework catalysts loaded with silver particles | |
| 摘要: 制备了一例二维Zn金属有机框架(Zn-MOF，{[Zn(btz)2]·DMF·CH3OH}n，Hbtz=苯并三氮唑，DMF=N，N-二甲基甲酰胺)，其展现出较高的溶剂、酸碱和热稳定性。稳定的结构和未配位的氮原子使得Zn-MOF具有优异的富集银离子的能力，并可通过热处理进一步将银离子转化为银颗粒固定于Zn-MOF上，继而得到Ag@Zn-MOF。经过热解还原后Zn-MOF框架仍然保持稳定，Ag@Zn-MOF中银颗粒的负载量(质量分数)为1.84%。电催化CO2还原性能测试表明，相比于Zn-MOF，Ag@Zn-MOF的电催化CO2还原为CO的法拉第效率显著提升，在-1.34 V (vs RHE)下的电流密度可达30.3 mA·cm-2，显示出良好的电催化CO2还原性能。 | |
| 关键词: 金属有机框架 电催化CO2还原 CO | |
| 基金项目: 国家自然科学基金(No.92161202，22121005，22271159，21971125，21801183)和111工程(No.B12015)资助。 | |
| Abstract: A 2D metal- organic framework (Zn-MOF, {[Zn(btz)2]·DMF·CH3OH}n, Hbtz=benzotriazole, DMF=N,N-dimethylformamide) was synthesized, exhibiting high stability in solvents, acid-base, and thermal conditions. The stable structure and uncoordinated nitrogen atoms enable Zn-MOF to effectively enrich silver ions, which can be converted into silver nanoparticles anchored on the MOF (Ag@Zn-MOF) through heat treatment. The silver nanoparticle loading (mass fraction) of the Ag@Zn-MOF composite reached 1.84%. The Zn-MOF framework remained stable after pyrolytic reduction. Electrocatalytic CO2 reduction performance tests demonstrated that, compared to Zn-MOF, the Faraday efficiency of Ag@Zn-MOF for CO production increased from 59.6% to 92.1%, with a current density of 30.3 mA·cm-2 at -1.34 V (vs RHE), highlighting its superior electrocatalytic performance. | |
| Keywords: metal-organic framework CO2 electroreduction CO | |
| 投稿时间：2024-11-15 修订日期：2024-12-11 | |
| 摘要点击次数: 859 | |
| 全文下载次数: 331 | |
| 梁泽龙,秦仕佳,郭鹏飞,徐航,赵斌.负载银颗粒金属有机框架催化剂的合成及其电催化CO2还原性能[J].无机化学学报,2025,41(1):165-173. | |
| 查看全文 查看/发表评论 下载PDF阅读器 | |
| Support information: 相关附件： 20240409_20240409-支撑信息 (3).doc | |
|
| |
|
| |
|
| |