Completely green synthesis of rose-shaped Au nanostructures and their catalytic applications

Abstract

A novel protocol for the one-pot, template/seed-free, and completely green synthesis of rose-shaped Au nanostructures with unique three-dimensional hierarchical structures was developed.

High-yield synthesis and hybridizations of Cu microplates for catalytic applications

“…S7(b) †), respectively, in agreement with the reported geometrical model of fcc metal nanostructures with plate-like structures. [57][58][59] Fig. 3(d) displays the UV-vis-NIR spectrum of the aqueous colloidal dispersion of Cu microplates synthesized after the addition of acetonitrile.…”

“…4-NP, which is widely used in pesticides and dye, is one of the most toxic and dangerous contaminants. 59 Accordingly, the hydrogenation of 4-NP to 4-AP using NaBH 4 is potentially important because it is an environmentally friendly and effective method to remove 4-NP in an aqueous phase. The hydrogenation reaction from 4-NP to 4-AP by NaBH 4 takes several days; thus, a stable and efficient catalyst is needed to drastically reduce the reaction time.…”

Effect of morphologies and compositions of silver-based multicomponent heterogeneous nanocrystals on the reduction of 4-nitrophenol

“…8–17 The advantages of Ag nanocrystals as catalysts were: (1) catalytic activity can be tuned by controlling their size and shape; (2) the reaction temperature requirement was low; (3) the practical application price was relatively low; (4) relatively low toxicity for environmental applications. 13,18–20 Even though Ag nanocrystals were ideal catalysts for 4-NP reduction, Ag nanocrystals used as catalysts still had several issues such as easy aggregation and lower catalytic activity, which needed to be treated to improve their catalytic performance. The aggregation problem can be effectively reduced by incorporating Ag nanocrystals into substrates, such as polymer matrices.…”