Synthesis of benzimidazolones by immobilized gold nanoparticles on chitosan extracted from shrimp shells supported on fibrous phosphosilicate

Mahboobeh Zahedifar; Ali Es-Haghi; Rahele Zhiani; Seyed Mohsen Sadeghzadeh

doi:10.1039/c9ra00481e

Synthesis of benzimidazolones by immobilized gold nanoparticles on chitosan extracted from shrimp shells supported on fibrous phosphosilicate

RSC Adv. 2019 Feb 25;9(12):6494-6501. doi: 10.1039/c9ra00481e. eCollection 2019 Feb 22.

Authors

Mahboobeh Zahedifar¹, Ali Es-Haghi², Rahele Zhiani^{3

4}, Seyed Mohsen Sadeghzadeh^{3

4}

Affiliations

¹ Department of Chemistry, Faculty of Science University of Jiroft Jiroft 7867161167 Iran.
² Department of Biology, Islamic Azad University, Mashhad Branch Mashhad Iran.
³ New Materials Technology and Processing Research Center, Department of Chemistry, Islamic Azad University, Neyshabur Branch Neyshabur Iran.
⁴ Young Researchers and Elite Club, Islamic Azad University, Neyshabur Branch Neyshabur Iran R_zhiani2006@yahoo.com.

Abstract

Here we demonstrate the synthesis of benzimidazolones from o-phenylenediamines and carbon dioxide in the presence of gold nanoparticles supported on a composite material based on microcrystalline chitosan from shrimp shells and fibrous phosphosilicate (CS-FPS/Au). The results showed that the gold nanoparticles were stable with the P, N and O atoms of CS-FPS. The morphology and structure of FPS leads to a higher catalytic activity. The CS-FPS/Au NPs were thoroughly characterized using TEM, FESEM, TGA, FTIR, and BET.