Effect of Synthesis Techniques on Crystallization and Optical Properties of Ag-Cu Bimetallic Nanoparticles
| Autor: | Jung-Kun Lee, Ian Nettleship, Po-Shun Huang, Ziye Xiong, Fen Qin |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
General Engineering Analytical chemistry Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Copper 0104 chemical sciences law.invention Silver nitrate chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry law General Materials Science Surface plasmon resonance Crystallization 0210 nano-technology Bimetallic strip Ethylene glycol |
| Zdroj: | JOM. 68:1163-1168 |
| ISSN: | 1543-1851 1047-4838 |
| DOI: | 10.1007/s11837-015-1757-1 |
| Popis: | Silver (Ag)-copper (Cu) bimetallic nanoparticles (NPs) were synthesized by the reduction of silver nitrate and copper (II) acetate monohydrate using ethylene glycol in a microwave (MW) heating system with controlled reaction times ranging from 5 min to 30 min. The molar ratio Ag/Cu was varied from 1:1 to 1:3. The effect of reaction conditions on the bimetallic NPs structures and compositions were characterized by x-ray photoelectron spectroscopy, x-ray diffraction and transmission electron microscopy. The average particle size was approximately 150 nm. The surface plasmon resonance (SPR) of Ag-Cu bimetallic NPs was investigated by monitoring the SPR band peak behavior via UV/Vis spectrophotometry. The resonance peak positions and peak widths varied due to the different structures of the bimetallic NPs created under the synthesis conditions. In the MW heating method, the reduction of Cu was increased and Cu was inhomogeneously deposited over the Ag cores. As the composition of Cu becoming higher in the Ag-Cu bimetallic NPs, the absorption between 400 nm to 600 nm was greatly enhanced. |
| Databáze: | OpenAIRE |
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