Synthesis and structural control of gold nanoparticles-coated polystyrene composite particles based on colloid thermodynamics

A facile and efficient synthesis of polystyrene/gold–platinum composite particles and their application for aerobic oxidation of alcohols in water

“…[17][18][19][20][21] The advantage of our approach relies on the fact that surface pretreatment is not required for the deposition of alloy nanoparticles on support microspheres. [17][18][19][20][21] The advantage of our approach relies on the fact that surface pretreatment is not required for the deposition of alloy nanoparticles on support microspheres.…”

A protector-free one-pot strategy to synthesize highly dispersed Pd hydrogenation catalysts in a broad loading range on polystyrene

“…25,29 Although the higher styrene yields could be achieved for these samples, the more intensied reaction conditions, such as longer reaction time ($300 min) 25 or higher H 2 pressure (3.0 MPa), 29 compared to those for other samples were simultaneously required, which should be attributed to the poor accessibility of the reactants to the metal sites on the well-protected surface of these small particles. 11,12 In contrast, our samples prepared from the present protector-free system could achieve comparable catalytic performance under obviously milder reaction conditions, suggesting that the preparation of metal nanocatalysts in not only a desired size range but also in a cleaner state was desirable for their application. Therefore, the present strategy could serve as a feasible method to prepare the desired samples for heterogeneous catalysis as well as other advanced applications that depend on size-controlled and clean metal nanoparticles.…”

“…However, the intrinsic function of the protectors is to strongly absorb on metal surface, which means they will at least occupy a part of the surface of metal particles and negatively inuence the loading affinity for the support or the accessibility of reactants to the metal sites. 11,12 The other method to obtain small-sized metal catalysts is introducing a support to distribute metal precursors via impregnation or deposition and then reducing the loaded precursors to metal particles. This method is benecial for employing the features of the support such as high specic surface area or the strong interaction with metal precursor to ensure the desired dispersion of metal particles.…”

Gamma irradiation of polyethylene nanocomposites for food packaging applications against stored‐product insect pests

“…Ag nanoparticles were prepared according to the following procedure by Li et al . Definite amount of AgNO 3 was added into 200 ml of deionized water, and 0.06 g of CTAB was added into 50 ml of deionized water.…”