Polyethylene glycol-stabilized platinum nanoparticles: The efficient and recyclable catalysts for selective hydrogenation of o-chloronitrobenzene to o-chloroaniline

Intratracheal instillation of platinum nanoparticles may induce inflammatory responses in mice

“…Enhancement of the selectivity in chemical reactions by PNPs has been a much-researched topic. For example, selective hydrogenation of o-chloronitrobenzene to o-chloroaniline has been performed using polyethylene glycol-stabilized PNP (Cheng et al, 2009). When different shapes and types of array catalysts were prepared using platinum particles and tested for oxygen reduction reaction, PNP showed a high sensitivity (Komanicky et al, 2009).…”

Bacterial toxicity/compatibility of platinum nanospheres, nanocuboids and nanoflowers

“…The synthesis of metal NPs with well-defined sizes and shapes has been investigated but still remains a challenging task. Among the different noble metals studied, platinum NPs have attracted significant attention due to their distinctive ability in catalyzing partial oxidation17, hydrogenation18 and dehydrogenation19 of a variety of important molecules that are essential for many industrial applications. Therefore, the synthesis of the bare and stable platinum NPs are particularly important in different catalytic reactions involving platinum elements.…”

Poly(ethylene glycol) as a Reaction Matrix in Platinum‐ or Gold‐Catalyzed Cycloisomerization: A Mechanistic Investigation

“…3-5 nm), with PEG under microwave activation, similar to the polyol method [9] used to generate such species. [10] This was further confirmed by XPS analysis of the samples of catalytic systems, which detected a mixture of M 0 (M = Pt, Au) and M n + (n = 2, 3, respectively), the major metallic species being the reduced metal, resulting in a deactivation of the catalyst. [8,11] The catalytic cycle describing this situation in the case of gold [12] is depicted in Scheme 2.…”

“…Recycling was tested on the transformation of diol 1 b in furan 2 b. [10] This was further confirmed by XPS analysis of the samples of catalytic systems, which detected a mixture of M 0 (M = Pt, Au) and M n + (n = 2, 3, respectively), the major metallic species being the reduced metal, resulting in a deactivation of the catalyst. This procedure was repeated successively until the catalytic activity dropped, resulting in an incomplete conversion.…”