原位重构限制在三维纳米孔铜内的铋纳米颗粒促电还原CO2(英文) |
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作者姓名: | 赵秋玉 王静 庄严 宫磊 张薇宁 樊唯镏 鲁振 张永政 藤田武志 张平 薛其坤 |
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作者单位: | 1. School of Physics and Physical Engineering, Qufu Normal University;2. School of Chemistry and Chemical Engineering, Shandong University;3. Institute of Physics, Chinese Academy of Sciences;4. Advanced Institute for Materials Research, Tohoku University;5. School of Environmental Science and Engineering, Kochi University of Technology |
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基金项目: | supported by the National Key R&D Program of China (2021YFB3802900);;the Major Program of the National Natural Science Foundation of China (52192604);;the Natural Science Foundation of Shandong Province (ZR2020QF077);;the National Natural Science Foundation of China (62104131); |
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摘 要: | 由于单金属Bi在CO2还原反应(CO2RR)中效率较低,通过表面工程复合材料提高电导率和产率是一种有吸引力的方法.在此,我们重构了在三维纳米孔铜结构中的原位生长金属Bi纳米颗粒.得益于三维纳米多孔导电网络和Cu与Bi之间的强相互作用, Bi@np-Cu费米能级向上移动,表现出优异的电催化二氧化碳还原性能. Bi@np-Cu在-0.97 V的电位下具有97.7%的甲酸法拉第效率,电流密度为82 mA cm-2.重要的是,该催化剂在连续催化反应40 h后仍能实现超过90%的法拉第效率.DFT计算表明, np-Cu有效地调节了Bi的电子态,优化了中间吸附能,从而提高了Bi的本征活性.这项工作为纳米多孔金属在催化中的应用提供了一个新视角.
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