Preparation of reusable Ag-decorated graphene oxide catalysts for decarboxylative cycloaddition

Abstract

In this study, we demonstrated a noble Ag-decorated graphene oxide catalyst (GOSH-Ag) for use in the decarboxylative cycloaddition reaction. The catalyst was easily prepared by depositing Ag nanoparticles on thiolated graphene oxide (GOSH) surfaces. Transmission electron microscopy (TEM) indicated that the nanoparticles were well-dispersed and of a small, approximately 3.7 nm average size. These characteristics resulted in a high surface area, which enhanced the catalytic activity of the supported catalyst. Moreover, it was found that the aggregation of Ag catalysts was inhibited by the strong adhesion between the GOSHs and the Ag nanoparticles during the chemical reactions, thereby permitting their reuse. Indeed, the supported catalyst could easily be separated and recovered from the reaction mixture and reused several times.

Versatilities of graphene-based catalysts in organic transformations

“…80 The results suggest that sp 2 carbon-based supports significantly influence the catalytic activities in the decarboxylative cycloaddition reaction/click chemistry.…”

“…80 The thiolated GO was used as catalyst support for depositing AgNPs on its surfaces. The thiol groups served as efficient linkers to secure the AgNPs without agglomeration and with an average size of 3·7 nm.…”

Photocatalytic Degradation of Methylene Blue in Presence of Graphene Oxide/TiO2Nanocomposites

“…27,28 The graphite powder (4 g) was first pre-oxidized with a solution of concentrated H 2 SO 4 (60 mL), K 2 S 2 O 8 (2 g), and P 2 O 5 (2 g) at 80 °C. The resulting mixture, after cooling to room temperature, was filtered and washed until the rinse-water pH became neutral.…”

Preference of Nano porous graphene to Single-Walled Carbon Nanotube (SWCNT) for preparing Silica Nano hybrid Pickering Emulsion for potential Chemical Enhanced Oil Recovery (C-EOR)

“…Graphene is a monolayer of carbon atoms arranged in hexagonal lattice [5,6]. It has excellent optical, mechanical, and electronic properties [7][8][9][10][11][12][13].…”