Multi‐Compartmentalized Cellulose Macrobead Catalysts for In Situ Organic Reaction in Aqueous Media. Issue 1 (20th December 2022)

• Record Type: Journal Article
• Authors: Park, Daehwan; Osuji, Chinedum O.; Kim, Jin Woong
• Is Part Of: Small methods. Volume 7:Issue 1(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-12-20
• Subjects: bacterial cellulose -- compartmentalization -- macrobeads -- recyclable green catalysts; Nanotechnology -- Methodology -- Periodicals; Nanotechnology -- Periodicals; Periodicals; 620.5028
• DOI: 10.1002/smtd.202201195
• Languages: English
• ISSNs: 2366-9608

Abstract

Abstract: This study reports a promising approach to fabricate bacterial cellulose (BC)‐based macrobead catalysts with improved catalytic activities and recyclability for organic reactions in aqueous media. To this end, the consecutive extrusion and gelation of BC precursor fluids is conducted using a combined micronozzle device to compartmentalize the resulting BC macrobeads in a programmed manner. The use of BCs laden with Au and Pd nanoparticles (NPs), and Fe3 O4 NPs led to the production of catalytically and magnetically compartmentalized BC macrobeads, respectively. Through the model reduction reaction of 4‐nitrophenol to 4‐aminophenol using NaBH4, it is finally demonstrated that the BC macrobead catalysts not only enhance catalytic activities while exhibiting high reaction yields (>99%) in aqueous media, but also repeatedly retrieve the products with ease in response to the applied magnetic field, enabling the establishment of a useful green catalyst platform. Abstract : A green colloidal catalyst platform is proposed. Cellulose‐based macrobead catalysts compartmentalized with catalytic and magnetic nanoparticles‐laden bacterial celluloses are produced via centrifugal force‐driven multi‐micronozzle extrusion. They show not only the enhanced catalytic activity in an aqueous media, but also excellent recyclability, enabling development of a green and sustainable catalysts platform.