Surface decoration of silica nanoparticles by Pd(0) deposition for catalytic application in aqueous solutions

Methylviologen mediated electrosynthesis of gold nanoparticles in the solution bulk

“…The alkylamino-modied silica nanoparticles (SiO 2 -NHR) were synthesized through the well-known Stöber procedure with the use of 3-[2-(2aminoethylamino)ethylamino]-propyltrimethoxysilane as previously described. 36 Twice distilled water was used in the experiments.…”

“…Electrosynthesis of ultrasmall palladium nanoparticles (3-8 nm) immobilized on the surface of watersoluble silicate nanoparticles modied with alkylamino groups (SiO 2 -NHR) (120-160 nm) was carried out by reduction of [PdCl 4 ] 2À in aqueous medium with methylviologen as the mediator. 36 Using the methylviologen moieties of a polymer nanoparticle (a copolymer of tetraviologen calix [4]resorcine with styrene), a nanocomposite material was obtained, namely, polymer nanoparticles (40-50 nm) with incapsulated ultrasmall palladium nanoparticles (4-7 nm). 37 In the latter case, the mediator that has nanocapsule pores simultaneously plays the role of a stabilizer.…”

A Novel Pd-P Nano-Alloy Supported on Functionalized Silica for Catalytic Aerobic Oxidation of Benzyl Alcohol

“…Mesoporous silica materials proved to be one of the most beneficial supports for metal NP catalysts owing to their high thermal and chemical stability, great surface area, tunable pore size, and provision of highly dispersed active sites on the final catalyst [22][23][24]. Catalysts manufactured by supporting palladium NPs on silica have been utilized in numerous reactions such as Suzuki coupling reactions, C-H activation [25,26], and aerobic oxidation of benzyl alcohol [27].…”

Nano-architecture of silica nanoparticles as a tool to tune both electrochemical and catalytic behavior of NiII@SiO2

“…The nanoparticulate approach to the design and synthesis of heterogeneous catalysts has gained growing attention in recent decades since it provides a tool for a combination of the catalytic efficiency of homogeneous catalysts with the facile separation from synthetic mixtures of heterogeneous ones. [1][2][3][4][5][6][7][8][9][10][11] In particular, conversion of molecular complexes of transition metals widely applied in homogeneous catalysis of organic reactions into nanoparticulate catalysts can signicantly facilitate their recycling. It is worth noting that the catalytic activity of nanoparticulate catalysts is greatly dependent on the surface activity of nanoparticles which, in turn, is affected by their size and nanoarchitecture.…”