Polystyrene Microspheres Decorated with Au4Cu5 Nanoclusters and their Application in Catalytic Reduction of 4‐Nitrophenol. Issue 33 (6th September 2021)

• Record Type: Journal Article
• Authors: Zhen, Yaru; Liu, Danyu; Zhou, Manman; Lin, Zhenzhen; Jin, Shan; Chen, Shuang; Hu, Daqiao; Zhu, Manzhou
• Is Part Of: ChemistrySelect. Volume 6:Issue 33(2021)
• Page Start: 8843
• Page End: 8847
• Publication Date: 2021-09-06
• Subjects: charge transfer -- electrostatic adsorption -- nanocatalysts -- nanoclusters -- polystyrene microspheres; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202102193
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Ultrasmall nanoclusters are emerging nanocatalysts due to their distinct physico‐chemical properties. However, the instability and agglomeration of these nanoclusters restrict their practical application. Herein, we designed a negatively charged cross‐linked polystyrene (PS) microsphere as support and decorated it with positively charged ultrasmall [Au4 Cu5 (Dppm)2 (C6 H11 S)6 ] + [BPh4 ] − (Au4 Cu5, in which Dppm stands for bis‐(diphenylphosphino)methane) nanoclusters through strong electrostatic adsorption, as evidenced by X‐ray photoelectron spectroscopy. The PS@Au4 Cu5 nanocomposites were well‐dispersed in water, exhibiting enhanced catalytic activity for the reduction reaction of 4‐nitrophenol to produce 4‐aminophenol. These findings open promising opportunities for supported nanocluster catalysis. Abstract : A type of negatively charged cross‐linked polystyrene (PS) microspheres is proven to be a robust support for positively charged [Au4 Cu5 (Dppm)2 (C6 H11 S)6 ] + [BPh4 ] − (denoted as Au4 Cu5, Dppm=bis‐(diphenylphosphino) methane) nanoclusters, and the obtained PS@Au4 Cu5 nanocomposites exhibit synergetic effect and enhanced catalytic activity for the reduction reaction of 4‐nitrophenol to produce 4‐aminophenol.