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    • 4. 发明申请
    • Synthesis of Nanoparticles Using Reducing Gases
    • 使用还原气合成纳米颗粒
    • US20130133483A1
    • 2013-05-30
    • US13583467
    • 2011-03-08
    • Hong YangJianbo WuMiao ShiAdam Gross
    • Hong YangJianbo WuMiao ShiAdam Gross
    • B22F9/18
    • B22F9/18B22F1/0018B22F1/0062B22F1/025B22F9/22B22F9/26B22F2001/0037B82Y30/00B82Y40/00C22C1/0466
    • Selective gas-reducing methods for making shape-defined metal-based nanoparticles. By avoiding the use of solid or liquid reducing reagents, the gas reducing reagent can be used to make shape well-defined metal- and metal alloy-based nanoparticles without producing contaminates in solution. Therefore, the post-synthesis process including surface treatment become simple or unnecessary. Weak capping reagents can be used for preventing nanoparticles from aggregation, which makes the further removing the capping reagents easier. The selective gas-reducing technique represents a new concept for shape control of nanoparticles, which is based on the concepts of tuning the reducing rate of the different facets. This technique can be used to produce morphology-controlled nanoparticles from nanometer- to submicron- to micron-sized scale. The Pt-based nanoparticles show improved catalytic properties (e.g., activity and durability).
    • 用于制备形状定义的金属基纳米颗粒的选择性气体还原方法。 通过避免使用固体或液体还原剂,气体还原剂可用于制备形状明确的金属和金属合金基纳米颗粒,而不会在溶液中产生污染物。 因此,包括表面处理的后合成过程变得简单或不必要。 弱封端剂可用于防止纳米颗粒聚集,这样可以进一步去除封端剂。 选择性气体减少技术代表了纳米颗粒形状控制的新概念,其基于调整不同方面的降低速率的概念。 该技术可用于从纳米至亚微米至微米级的尺度产生形貌受控的纳米粒子。 Pt基纳米颗粒显示改进的催化性能(例如活性和耐久性)。