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黄金色铜粒子制取技术的试验研究
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作者 刘徽平 陈一胜 +1 位作者 温嵘生 朱应禄 《江西有色金属》 2000年第4期38-40,共3页
黄金色铜合金粒子在仿金饰品和材料、油漆生产以及合金熔炼上有多种用途。为简便有效地制取直径0.5~5mm的黄金色铜合金粒子 ,对黄金色铜合金粒子材料的成分进行了筛选、比较试验 ,对粒子的成形设备设计制造了两种装置进行比较试验。结... 黄金色铜合金粒子在仿金饰品和材料、油漆生产以及合金熔炼上有多种用途。为简便有效地制取直径0.5~5mm的黄金色铜合金粒子 ,对黄金色铜合金粒子材料的成分进行了筛选、比较试验 ,对粒子的成形设备设计制造了两种装置进行比较试验。结果表明 ,选用8 %Zn、2%Al、1 %Ni、Re适量、Cu余量的铜合金配方具有较好的仿金色泽和粒子成形性、耐蚀性。试制的离心粒化法和高压水粒化法两种铜粒子成形装置简单实用、各有所长 ,可根据需要生产出0. 展开更多
关键词 合金 黄金色铜合金粒子 制取技术 试验研究
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铂金与K白金的区别
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作者 赵玉娥 《黄金》 CAS 2003年第11期52-52,共1页
关键词 铂金 K白金 鉴别 黄金合金
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Gold nanorods core/AgPt alloy nanodots shell: A novel potent antibacterial nanostructure 被引量:10
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作者 Xiaona Hu Yuyun Zhao +7 位作者 Zhijian Hu Aditya Saran Shuai Hou Tao Wen Wenqi Liu Yinglu Ji Xingyu Jiang Xiaochun Wu 《Nano Research》 SCIE EI CAS CSCD 2013年第11期822-835,共14页
In the light of the current problems of silver nanoparticles (Ag NPs) in terms of antibacterial performance, we have designed a novel trimetallic corelshell nanostructure with AgPt alloy nanodots epitaxially grown o... In the light of the current problems of silver nanoparticles (Ag NPs) in terms of antibacterial performance, we have designed a novel trimetallic corelshell nanostructure with AgPt alloy nanodots epitaxially grown on gold nanorods (Au@PtAg NRs) as a potential antibacterial agent. Both Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) were studied. The antibacterial activity exhibits an obvious composition-dependence. On increasing the Ag fraction in the alloy shell up to 80%, the antibacterial activity gradually increases, demonstrating a flexible way to tune this activity. At 80% Ag, tile antibacterial activity is better than that of a pure Ag shell. The improved antibacterial ability mainly results from the high exposure of silver on the shell surface due to the dot morphology. We thus demonstrate that forming alloys is an effective way to improve antibacterial activity while retaining high chemical stability for Ag-based nanomaterials. Furthermore, due to the tunable localized surface plasmonic response in the near-infrared (NIR) spectral region, additional control over antibacterial activity using light--such as photothermal killing and photo- triggered silver ion release--is expected. As a demonstration, highly enhanced antibacterial activity is shown by utilizing the NIR photothermal effect of the nanostructures. Our results indicate that such tailored nanostructures will find a role in the future fight against bacteria, including the challenge of the increasing severity of multidrug resistance. 展开更多
关键词 AgPt gold nanorods antibacterial activities composition-dependence photothermal effect
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