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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Chen, Huihui Ren, Mingyue Tao, Sha Yang, Mei Chen, Guangwen |
| Description | Country affiliation: China Author Affiliation: Tao S ( Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China); Yang M ( Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. Electronic address: yangmei@dicp.ac.cn.); Chen H ( Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China); Ren M ( Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China); Chen G ( Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. Electronic address: gwchen@dicp.ac.cn.) |
| Abstract | A microfluidic-based method for the continuous synthesis of Ag@Cu O core-shell nanoparticles (NPs) has been developed. It only took 32s to obtain Ag@Cu O core-shell NPs, indicating a high efficiency of this microfluidic-based method. Triangular Ag nanoprisms were employed as the cores for the overgrowth of Cu O through the reduction of Cu(OH) with ascorbic acid. The as-synthesized samples were characterized by XRD, TEM, SEM, HAADF-STEM, EDX, HRTEM, UV-vis spectra and N adsorption-desorption. The characterization results revealed that the as-synthesized Ag@Cu O core-shell NPs exhibited a well-defined core-shell nanostructure with a polycrystalline shell, which was composed of numbers of Cu O domains epitaxially growing on the triangular Ag nanoprism. It was concluded that the synthesis parameters such as the molar ratio of trisodium citrate to AgNO , H O to AgNO , NaOH to CuSO , ascorbic acid to CuSO and AgNO to CuSO had significant effect on the synthesis of Ag@Cu O core-shell NPs. Moreover, Ag@Cu O core-shell NPs exhibited superior catalytic activity in comparison with pristine Cu O NPs towards the visible light-driven degradation of methyl orange. This enhanced photocatalytic activity of Ag@Cu O core-shell NPs was attributed to the larger BET surface area and improved charge separation efficiency. The trapping experiment indicated that holes and superoxide anion radicals were the major reactive species in the photodegradation of methyl orange over Ag@Cu O core-shell NPs. In addition, Ag@Cu O core-shell NPs showed no obvious deactivation in the cyclic test. |
| ISSN | 00219797 |
| Journal | Journal of Colloid and Interface Science |
| Volume Number | 486 |
| e-ISSN | 10957103 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2017-01-15 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Colloid & Interface Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Colloid and Surface Chemistry Biomaterials Electronic, Optical and Magnetic Materials |
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