Facile Synthesis of Copper Nanoparticles in Glycerol at Room Temperature: Formation Mechanism
A copper sol is usually synthesized by the reduction of a copper precursor with a suitable reducing agent in the presence of a stabilizer. There are few reports regarding the preparation of copper nanoparticles in glycerol without using a stabilizing agent, but at elevated temperatures. The formatio...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Royal Society of Chemistry
2015
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/9080/ http://umpir.ump.edu.my/id/eprint/9080/ http://umpir.ump.edu.my/id/eprint/9080/ http://umpir.ump.edu.my/id/eprint/9080/1/fkksa-2015-maksudur-Facile%20Synthesis%20of%20Copper.pdf http://umpir.ump.edu.my/id/eprint/9080/7/fkksa-2015-maksudur-facile%20synthesis%20of%20copper%20nanoparticles-full.pdf |
| Summary: | A copper sol is usually synthesized by the reduction of a copper precursor with a suitable reducing agent in the presence of a stabilizer. There are few reports regarding the preparation of copper nanoparticles in glycerol without using a stabilizing agent, but at elevated temperatures. The formation of reduced copper (Cu0) is usually verified by a UV-vis spectrophotometer where a ‘red copper sol’ was formed. In the present paper we synthesized the copper sol at room temperature in a glycerol medium using hydrazine as a reducing agent. The chemical states of copper in the sol and their composition were analyzed by X-ray absorption near edge structure spectroscopy (XANES) with the linear composition fitting method. A series-parallel mechanism of the reaction was proposed. An average particle size of 5 ± 1 nm was visualized via transmission electron microscopy (TEM). |
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