The synthesis of biochar from biomass waste recycling and its surface modification for immobilization of a new Cu complex as a reusable nanocatalyst in the homoselective synthesis of tetrazoles

3-(Sulfamic acid)-propyltriethoxysilane on biochar nanoparticles as a practical, biocompatible, recyclable and chemoselective nanocatalyst in organic reactions

“…The modied biochar nanoparticles with (3-aminopropyl)triethoxysilane (APES@BNPs) were obtained based on authentic reported procedure. 41,52 Then, in a 50 mL vacuum balloon, 0.5 g of APES@BNPs were dispersed in 3 mL of dry dichloromethane. Then, 0.8 mL of concentrated chlorosulfonic acid was added dropwise under a magnetic stirrer at room temperature.…”

A multidentate copper complex on magnetic biochar nanoparticles as a practical and recoverable nanocatalyst for the selective synthesis of tetrazole derivatives

“…Raw materials for biochar production include wood chips, tree bark, plant residues, animal manure, and organic wastes. 38–40 As is known, the use of renewable materials and waste recycling are other principles of green chemistry. 41,42 The synthesis of biochar nanoparticles from natural and renewable sources is very important in expanding its application.…”