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以ISOBAM-104为保护剂,采用共还原法制备了一系列不同组成的Rh/Co双金属纳米颗粒(BNPs)。采用紫外-可见吸收光谱、透射电镜及高分辨透射电镜对纳米颗粒的结构及组成进行了表征。结果表明,所制备的Rh/Co BNPs的粒径小于6.0nm,具有合金结构。催化制氢实验结果表明,Rh_(20)Co_(80)BNPs具有最高的催化制氢活性,其TOF值可高达12880mol-H_2·h~(-1)·mol-Rh~(-1),远高于Rh和Co单金属纳米颗粒的催化活性。
A series of Rh / Co bimetallic nanoparticles (BNPs) were prepared by co-reduction method using ISOBAM-104 as a protective agent. The structure and composition of the nanoparticles were characterized by UV-Vis absorption, transmission electron microscopy and high-resolution transmission electron microscopy. The results show that the particle size of Rh / Co BNPs prepared is less than 6.0 nm and has an alloy structure. The experimental results of catalytic hydrogen production showed that the Rh_ (20) Co_ (80) BNPs possessed the highest catalytic hydrogen production activity and the TOF value was as high as 12880mol-H_2 · h -1 mol-Rh -1. Higher than the catalytic activity of Rh and Co single metal nanoparticles.