Preparation and characterization of Ag–Pd bimetallic nano-catalysts in thermosensitive microgel nano-reactor

Abstract

Thermosensitive microgels with PS core and cross-linked PNIPA shell were synthesized as nano-reactor to prepare Ag–Pd bimetallic nanoparticles.

Aluminum Metal–Organic Framework–Silver Nanoparticle Composites for Catalytic Reduction of Nitrophenols

“…However, ultrafine Ag NPs are thermodynamically unstable due to their high surface energy that causes decreased catalytic efficiency and poses difficulties in the renewability of catalysts. 13,14 Despite the enormous research efforts devoted to discovering viable pathways for the preparation of nanomaterials, control of size, shape, and dispersion of ultrafine and uniform Ag NPs remains one of the key challenges to achieving highly robust catalysts with desirable efficiency and stability.…”

“…With a high tunability in size, shape, composition, and structure, composite catalysts incorporated with ultrafine Ag NPs are promising candidates showing higher activity, due to the high surface areas and negative redox potentials that favor the electron transfer from Ag NP surfaces to reaction substrates. However, ultrafine Ag NPs are thermodynamically unstable due to their high surface energy that causes decreased catalytic efficiency and poses difficulties in the renewability of catalysts. , Despite the enormous research efforts devoted to discovering viable pathways for the preparation of nanomaterials, control of size, shape, and dispersion of ultrafine and uniform Ag NPs remains one of the key challenges to achieving highly robust catalysts with desirable efficiency and stability.…”

Physicochemical aspects of inorganic nanoparticles stabilized in N-vinyl caprolactam based microgels for various applications

“…Bimetallic nanoparticles may be loaded into polymer microgels using in situ reduction methodology as described for fabrication of monometallic nanoparticles in Section 3.2 and has been reported in literature for N-isopropylacrylamide based hybrid microgels. [59][60][61] To the best of our information, fabrication of bimetallic nanoparticles in VCL based microgels using in situ reduction methodology has not been reported in literature. However separately prepared bimetallic nanoparticles have been loaded into VCL based microgels to obtain a hybrid material with fascinating properties.…”

Effect of Methacrylic Acid in PNNPAM Microgels on the Catalytic Activity of Embedded Palladium Nanoparticles

“…[47] In particular, the quantification of metal surface area and the normalization of the reaction rate constant to this area have been performed in only a few studies. [48][49][50] In order to address this point in more detail, we prepared a variety of N-n-propylacrylamide (NNPAM) based microgel systems with nominal methacrylic acid (MAc) feeds between 5 and 25 mol%. The incorporation of MAc and its influence on the thermoresponsive properties of the microgels were followed by means of potentiometric titration and photon correlation spectroscopy (PCS).…”