Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5354320 | Applied Surface Science | 2015 | 6 Pages |
Abstract
The copper (Cu) nanocolloids were prepared by sodium borohydride (NaBH4) reduction of metal salt solutions in a T-shaped microreactor at room temperature. The influence of NaBH4 molar concentrations on copper particle's diameter, morphology, size distribution, and elemental compositions has been investigated by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The ultraviolet-visible spectroscopy (UV-vis) was used to verify the chemical compounds of nanocolloids and estimate the average size of copper nanocolloids. The synthesized copper nanocolloids were uniform in size and non-oxidized. A decrease in the mean diameter of copper nanocolloids was observed with increasing NaBH4 molar concentrations. The maximum mean diameter (4.25Â nm) occurred at the CuSO4/NaBH4 molar concentration ratio of 1:2.
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Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Lei Xu, Jinhui Peng, C. Srinivasakannan, Guo Chen, Amy Q. Shen,