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Size-Dependent Electrocatalytic Reduction of CO2 over Pd Nanoparticles
文献类型：期刊论文
| 作者 | Gao, Dunfeng1,3; Zhou, Hu2; Wang, Jing1,3; Miao, Shu1; Yang, Fan1; Wang, Guoxiong1; Wang, Jianguo2; Bao, Xinhe1 |
| 刊名 | journal of the american chemical society
 |
| 出版日期 | 2015-04-08 |
| 卷号 | 137期号:13页码:4288-4291 |
| 英文摘要 | size effect has been regularly utilized to tune the catalytic activity and selectivity of metal nanoparticles (nps). yet, there is a lack of understanding of the size effect in the electrocatalytic reduction of co2, an important reaction that couples with intermittent renewable energy storage and carbon cycle utilization. we report here a prominent size-dependent activity/selectivity in the electrocatalytic reduction of co2 over differently sized pd nps, ranging from 2.4 to 10.3 nm. the faradaic efficiency for co production varies from 5.8% at -0.89 v (vs reversible hydrogen electrode) over 10.3 nm nps to 91.2% over 3.7 nm nps, along with an 18.4-fold increase in current density. based on the gibbs free energy diagrams from density functional theory calculations, the adsorption of co2 and the formation of key reaction intermediate cooh* are much easier on edge and corner sites than on terrace sites of pd nps. in contrast, the formation of h* for competitive hydrogen evolution reaction is similar on all three sites. a volcano-like curve of the turnover frequency for co production within the size range suggests that co2 adsorption, cooh* formation, and co* removal during co2 reduction can be tuned by varying the size of pd nps due to the changing ratio of corner, edge, and terrace sites. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | electrochemical reduction ; carbon-dioxide ; selective conversion ; enhanced activity ; au nanoparticles ; catalysts ; electroreduction ; electrodes ; formate |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000352752000004 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146162]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310032, Zhejiang, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Dunfeng,Zhou, Hu,Wang, Jing,et al. Size-Dependent Electrocatalytic Reduction of CO2 over Pd Nanoparticles[J]. journal of the american chemical society,2015,137(13):4288-4291. |
| APA | Gao, Dunfeng.,Zhou, Hu.,Wang, Jing.,Miao, Shu.,Yang, Fan.,...&Bao, Xinhe.(2015).Size-Dependent Electrocatalytic Reduction of CO2 over Pd Nanoparticles.journal of the american chemical society,137(13),4288-4291. |
| MLA | Gao, Dunfeng,et al."Size-Dependent Electrocatalytic Reduction of CO2 over Pd Nanoparticles".journal of the american chemical society 137.13(2015):4288-4291. |
入库方式： OAI收割
来源：大连化学物理研究所
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