Green synthesis of carbon-supported nanoparticle catalysts by physical vapor deposition on soluble powder substrates
Green synthesis of carbon-supported nanoparticle catalysts by physical vapor deposition on soluble powder substrates
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可溶性粉末基底上物理气相沉积绿色合成碳载纳米粒子催化剂
DOI：
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发表时间：
2015
影响因子：
4.6
通讯作者：
Cyrille Alexandre
中科院分区：
文献类型：
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作者：
J. Vincent;Ruta Ziukaite;Cyrille Alexandre
以高比表面积碳(NP/Cs)为载体，采用物理气相沉积的方法在葡萄糖(α-D-Glug，Glu)载体上沉积金属和金属氧化物纳米颗粒。以谷氨酸为载体，将纳米粒子从块体材料输送到碳载体表面，得到了超细纳米粒子，它通过谷氨酸表面的羟基起到了稳定作用。这种稳定作用足以稳定NPs，但又弱到不会显著阻碍金属表面。由于在我们的程序中只需要目标材料和Glu，它可以被认为是环境友好的，NPs不含危险化学物质。此外，所得到的Np/Cs在各种电化学反应中表现出更高的活性，这主要归功于它们的高比表面积。
Metal and metal oxide nanoparticles (NPs) supported on high surface area carbon (NP/Cs) were prepared by the physical vapor deposition of bulk materials on an α-D-glucose (Glu) substrate, followed by the deposition of the NPs on carbon supports. Using Glu as a carrier for the transport of NPs from the bulk materials to the carbon support surfaces, ultrafine NPs were obtained, exhibiting a stabilizing effect through OH moieties on the Glu surfaces. This stabilizing effect was strong enough to stabilize the NPs, but weak enough to not significantly block the metal surfaces. As only the target materials and Glu are required in our procedure, it can be considered environmentally friendly, with the NPs being devoid of hazardous chemicals. Furthermore, the resulting NP/Cs exhibited an improvement in activity for various electrochemical reactions, mainly attributed to their high surface area.