Surface bound copper- grafted TiO2 nanocatalyst for carbon-sulfur cross coupling reaction

Title

Surface bound copper- grafted TiO2 nanocatalyst for carbon-sulfur cross coupling reaction

Creator

D Souza, Eden Sinchana; Nizam, Aatika

Description

This study reports the synthesis of TiO2-based nanocatalyst for efficient diarylsulfide synthesis via Ullmann-type reaction strategy, addressing challenges in conventional methods that are reliant on toxic reagents and harsh reaction conditions. The nanocatalyst comprises an amine-functionalized TiO2 core followed by copper doping. This nanocatalyst demonstrates exceptional performance in cross coupling reactions under mild conditions, achieving yields up to 5098 % with broad-substrate scope. The pure products were characterized using 1H NMR, 13C NMR, FT-IR, and mass spectrometry. The catalyst's heterogeneous nature enables easy recovery and reuse for upto 5 cycles without any significant activity loss. The synthesized nanocatalyst was characterized using various characterization techniques such as FT-IR, TGA, XRD, EDX, SEM, and STEM. This approach aligns with the green chemistry principles, minimizing waste and energy consumption and replacing highly expensive transition metal catalysts. The work highlights the potential of functionalized TiO2 nanomaterials in sustainable organic synthesis, contributing to SDGs 3 (Health through safer pharmaceuticals), 9 (industry innovation), and 12 (responsible production). 2025 Elsevier B.V.

Source

Catalysis Today;Volume;460;Issue;;Article No.;115486;

Date

01-01-2025

Publisher

Elsevier B.V.

Subject

Diarylsulfide; Eco- friendly; Heterogenous nanocatalyst; Ligand- Free; Sustainable synthetic method

Coverage

D Souza E.S., Department of Chemistry, Christ University, Bangalore, 560029, India; Nizam A., Department of Chemistry, Christ University, Bangalore, 560029, India

Rights

Restricted Access; Hardcopy may be available in the library

Relation

ISSN: 9205861; CODEN: CATTE

Format

online

Language

English

Type

Article

Identifier

https://doi.org/10.1016/j.cattod.2025.115486

https://www.scopus.com/pages/publications/105012108241?origin=resultslist