Synthesis of Ag/BSA composite nanospheres from water-in-oil microemulsion using compressed CO2 as antisolvent |
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Authors: | Zhang Jianling Han Buxing Chen Jing Li Zhonghao Liu Zhimin Wu Weize |
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Affiliation: | Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China. |
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Abstract: | In this work, a novel route to synthesize biomolecule/metal composite nanospheres is proposed. This method combines the advantages that the silver nanoparticles and bovine serum albumin (BSA) can be precipitated simultaneously from water-in-oil microemulsion by the easy control of CO2 pressure, which was revealed by our high-pressure UV-VIS spectra. The Ag/BSA nanocomposites were successfully prepared using this method. The transmission electronic microscopy (TEM) if the obtained nanocomposites shows that the small-sized Ag nanaoparticles are immobilized by the BSA nanospheres, and the phase structure was characterized by X-ray diffraction (XRD). The Ag/BSA nanocomposites show absorption properties at a wavelength around 435 nm. |
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Keywords: | Ag BSA nanoparticles water‐in‐oil microemulsion CO2 coprecipitation |
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