Abstract
Colloidal metal oxide nanocrystals have attained worldwide attention in the field of catalysis because of their control over size, composition, low-temperature solution processability, intrinsic stability solubility and so on. The colloidal nanoparticles can achieve a very small size and a high surface area; thus, most of the atoms will be found on the surface, which improves the catalytic activity of the nanocolloids. Colloidal nanoparticles of well-defined two- or three-dimensional structures with strict control on particle size, morphology, chemical atomic composition, and elemental dispersion are promising and attractive catalysts in any reaction of interest. Colloidal metal oxides are interesting alternatives to the existing transition metal oxides with poor dispersion reducibility in the field of homogeneous catalysis in solution as well as heterogenous catalysis in metal supports. This is because of the uniform dispersion and exceptionally high controlled metal loading. This chapter discuss the catalytic activity and selectivity of colloidal metal oxide nanocrystals in technological applications and their scientific interest.
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