Gold nanoparticles decorated on a graphene-periodic mesoporous silica sandwich nanocomposite as a highly efficient and recyclable heterogeneous catalyst for catalytic applications. Issue 42 (9th April 2015)

• Record Type: Journal Article
• Authors: Movahed, Siyavash Kazemi; Shariatipour, Monire; Dabiri, Minoo
• Is Part Of: RSC advances. Volume 5:Issue 42(2015)
• Page Start: 33423
• Page End: 33431
• Publication Date: 2015-04-09
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra00062a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Ultra-small Au nanoparticles (Au NPs) were immobilized on HS-functionalized sandwich-like periodic mesoporous silica (PMS) coated graphene (G) to form the novel nanocomposite catalyst Au NPs@HS-G-PMS. Abstract : Ultra-small Au nanoparticles (Au NPs) were immobilized on HS-functionalized sandwich-like periodic mesoporous silica (PMS) coated graphene (G) to form the novel nanocomposite catalyst Au NPs@HS-G-PMS. The synthesized Au NPs@HS-G-PMS nanocatalyst exhibited excellent catalytic activity in three kinds of organic reactions. The reduction of 4-nitrophenol by sodium borohydride, the Suzuki–Miyaura cross coupling reaction of aryl halides with phenyl boronic acid and the three component coupling reaction of aldehyde, alkyne, and secondary amine (A 3 -coupling) in water were all successfully accomplished. Most importantly, the catalyst could be used repetitively more than six times without significant deactivation.