PAMAM Dendrimer Templated Nanoparticle Catalysts

Dendrimers Designed for Functions: From Physical, Photophysical, and Supramolecular Properties to Applications in Sensing, Catalysis, Molecular Electronics, Photonics, and Nanomedicine

“…Subsequent to the design of dendrimer-encapsulated NP catalysts by Crooks, – supported metal−NP-containing dendrimers were shown to be active and recyclable catalysts, and this field has been reviewed by Chandler et al, who brought an important contribution (vide infra). – …”

“…Two approaches were used. In the first one, metal NPs were generated in SBA-15-supported dendrons (Figure ), , whereas in the other one, the dendrimer containing the NPs was deposited onto a solid support followed by thermal removal of the dendrimer (Figure ). – ,– …”

“…For instance, the gas-phase reactant CO cannot bind the DEN surface, because the dendrimer collapses around the NP and poisons the NP surface, rendering it inactive . The difficulty then resides in the removal of the dendrimer without transforming or perturbing the NP. ,, Indeed, dendrimer removal may lead to increase in both particle size and distribution. This is illustrated by FT-infrared studies of PAMAM dendrimer removal leading to the formation of surface carboxylates and the need to use high temperature for decomposition …”

Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

“…These are hyperbranched polymers that ramify from a single core and form a porous sphere [85,86] (Figure 6). Dendrimers are defined by the number of generations and the nature of the termination function, e.g., G4-OH or G6-NH 2 .…”

TiO2-supported gold catalysts in the catalytic wet air oxidation of succinic acid: influence of the preparation, the storage and the pre-treatment conditions

“…9 As an example, dendrimers were used as a template for the synthesis of monodispersed gold particles. [10][11][12] Professor D. Astruc and his group have been highly active in the development of new generation dendrimers, such as the new ''click'' polyethyleneglycol or the ferrocenyl-terminated dendrimers, for the development of specific gold catalysts. [13][14][15][16] Among the possible catalytic applications for gold, the treatment of model wastewaters via catalytic wet air oxidation (CWAO) has been described for the first time by Besson et al 17 Wet air oxidation (WAO) has been proved to be highly efficient for the elimination of the organic pollution from industrial effluents under oxygen pressure at elevated temperature, without any toxic gas and/or particulate emission.…”