Dispersed Pt nanoparticles

C. Sivakumar, Finely dispersed Pt nanoparticles in conducting poly(o-anisidine) nanofibrillar matrix as electrocatd3hic material, Electrochim. Acta, 52, 4182 190 (2007). 

It is believed that some doped carbon nanotubes can provide the Pt catalyst with strong interaction. For example, highly dispersed Pt nanoparticles supported on surface of thiolation functional carbon nanotubes, such as S-doped CNTs (SH-CNTs), CNTs-CeHe-CHs-SH, CNTs-CONH-(CH2)2-SH, and CNTs—CONH—CeHe—SH, were explored. Furthermore, when some metal oxides such as NbTi02 and metal carbides were explored as the catalyst supports, strong interaction between catalyst and the support was also observed. ... 

Fig. 24.2 Highly dispersed Pt nanoparticles deposited on acid-oxidized Vulcan XC-72R...

Highly dispersed Pt nanoparticles supported on sulfonated carbon nanotubes (Pt/sulfonated-CNTs) with a high density of sulfonic acid groups were recently prepared, and then a Pt/sulfonated-CNTs modified GC electrodes was constructed successfully [34]. Sulfonation showed a positive effect of electroactivity of catalysts. 

Yacou, C., Ayral, A., Giroir-Fendler, A.,et al (2009). Hierarchical porous silica membranes with dispersed Pt nanoparticles, Micr. Meso. Mater., 126, pp. 222-227. 

FIGURE 3.2 A high-resolution TEM, obtained from image analysis of weU-dispersed Pt nanoparticles. They are deposited on a high-surface-area carbon support, together with the normalized particle radius distribution of Pt. 

Figure 10.7 (a) TEM image and (b) electron diffraction of solvent-dispersible Pt nanoparticles prepared in [BMIM][Tf2N] IL [136],... 

Chen, M. and Xing, Y.C. (2005) Polymer-mediated synthesis of highly dispersed Pt nanoparticles on carbon black. Langmuir,... 

Figure 19.6 shows SEM images of three types of Pt-modified diamond films that were fabricated from as-deposited diamond and nanoporous diamond films. Fig. 19.6A (a and b) shows images of the as-deposited diamond surface with dispersed Pt nanoparticles (as-deposited diamond/Pt ). The Pt nanoparticles, located mainly at the grain boundaries, have diameters from 10 to 150 nm. There are also very small Pt deposits (10 50 nm) on the grain surface. 

Pt/C Modified polyol method Carbon black suppmted highly dispersed Pt nanoparticles with size 2.5 0.5 nm 20 wt% of metal loading Cyclic voltammetry at room temperature in O.5MNH3 + IMKOH Peak current daisity ca. 6 mA cm (u = 30 mV s ) 53... 

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