Knowledge Management System Of Institute of process engineering,CAS
| Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation | |
| Alternative Title | Electrochim. Acta |
| Chen, D.; Cui, P. L.; Liu, H.; Yang, J. | |
| 2015 | |
| Source Publication | Electrochimica Acta
 |
| Issue | 0Pages:461-467 |
| Abstract | Nanocomposites consisting semiconductor and noble metal domains are of great interest for their synergistic effect-based enhanced properties in a given application. Herein, we demonstrate a facile approach for the synthesis of heterogeneous nanocomposites consisting of silver sulfide (Ag2S) and hollow structured Pd nanoparticles (hPd). It begins with the preparation of core-shell nanoparticles with an Ag core and an alloy Ag/Pd shell in an organic solvent via galvanic replacement reaction (GRR) between Ag seed particles pre-synthesized and Pd2+ ion precursors. The Ag component is then removed from the core and shell regions of core-shell Ag-Ag/Pd nanoparticles, and converted into Ag2S by elemental sulfur (S). The Ag2S forms the semiconductor domain in the nanocomposite and shares the solid-state interface with the resultant hollow structured Pd nanoparticle. As demonstrated, the Ag2S-hPd nanocomposites exhibit superior catalytic activity and durability for formic acid oxidation, compared to the pure Pd nanoparticles prepared by oleylamine reduction of Pd ion precursors and commercial Pd/C catalyst, due to the electronic coupling between semiconductor and noble metal domains in the nanocomposites. In addition, the structural transformation from core-shell to heterogeneous nanocomposites may provide new opportunities to design and fabricate hybrid nanostructures with interesting physicochemical properties. (C) 2014 Elsevier Ltd. All rights reserved. |
| Keyword | Silver Sulfide Hollow Palladium Nanoparticle Nanocomposites Galvanic Replacement Reaction Formic Acid Oxidation Electronic Coupling Effect Oxygen Reduction Fuel-cells Electrochemical Oxidation Single-crystal Noble-metals Ag Alloys Electrooxidation Nanocrystals Palladium Nanospheres |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/11706 |
| Collection | 研究所（批量导入） |
| Recommended Citation GB/T 7714 | Chen, D.,Cui, P. L.,Liu, H.,et al. Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation[J]. Electrochimica Acta,2015(0):461-467. |
| APA | Chen, D.,Cui, P. L.,Liu, H.,&Yang, J..(2015).Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation.Electrochimica Acta(0),461-467. |
| MLA | Chen, D.,et al."Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation".Electrochimica Acta .0(2015):461-467. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Heterogeneous nanoco（1548KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
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