摘要
Perfect platinum （Pt） nanocubes with high density have been synthesized by controlled reduction of hexachloroplatinic acid in the presence of H2SO4 and HCl, employing a pair of low-resistivity fastened silicon （FS） wafers at room temperature. The presence of the additive charges （induced by prior etching of the silicon surface with HF to remove any SiO2 layer） between the interfaces of the FS surface results in a high charge density and facilitates fast deposition of Pt nanoparticles via electroless plating. The charge density, stirring time, and homogeneity of the aqueous solution influenced the geometrical shapes of the Pt nanoparticles. The parameters were finely tuned in order to control the nucleation and growth rates and obtain perfect Pt nanocubes. The perfect Pt nanocubes were single crystalline with exposed {100} facets. Per equivalent Pt surface areas, the perfect Pt nanocubes showed enhanced catalytic activity relative to truncated Pt nanocubes or spherical Pt nanoparticles for the electrooxidation of liquid feed fuels such as methanol and ethanol. Moreover, there a strong correlation was observed between the optical, electrical, thermal, magnetic, and catalytic properties of the perfect Pt nanocubes which should lead to a variety of technological applications of these materials.
有高密度的完美的铂(磅) nanocubes 被 hexachloroplatinic 酸的控制减小面对 H2SO4 和 HCl 综合了，采用一双低抵抗力的系住的硅(FS ) 在房间温度的晶片。添加剂的存在收费(由移开任何 SiO2 层的与 HF 的硅表面的优先的蚀刻导致了) 在 FS 的接口之间，表面导致高费用密度并且经由无电的 plating 便于磅 nanoparticles 的快免职。水的答案的费用密度，激动人心的时间，和同质影响了磅 nanoparticles 的几何形状。参数细微地被调节以便控制成核和生长率并且获得完美的磅 nanocubes。完美的磅 nanocubes 是与水晶的单身者暴露 { 100 } 方面。每相等的磅表面区域，磅 nanocubes 显示出的完成式为液体的 electrooxidation 相对截断的磅 nanocubes 或球形的磅 nanoparticles 提高了催化活动喂象甲醇和乙醇那样的燃料。而且，在那里，强壮的关联在应该导致这些材料的许多工艺的应用的完美的磅 nanocubes 的光、电、热、磁性、催化的性质之间被观察。
