Hollow silica-coated porous carbon with embedded iron oxide particles for effective methylene blue degradation. Issue 54 (12th December 2022)

• Record Type: Journal Article
• Authors: Wang, Kai; Zhao, Kang; Meng, Qingnan; Bai, Qian; Li, Xin; Hu, Huating; Jiao, Hua; Tang, Yufei
• Is Part Of: RSC advances. Volume 12:Issue 54(2022)
• Page Start: 35452
• Page End: 35460
• Publication Date: 2022-12-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra06411a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A novel catalyst, hollow silica-coated porous carbon embedded with iron oxide (FeO x @C/SiO2 ), was synthesized by the extended Stöber method. Abstract : A novel catalyst, consisting of hollow silica-coated porous carbon with embedded iron oxide particles (FeO x @C/SiO2 ), was synthesized by the extended Stöber method. Iron ions were incorporated in a resorcinol–formaldehyde resin in the presence of citric acid to form a template, which was then coated with a silica layer. The iron oxide-embedded porous carbon and hollow silica were simultaneously formed during calcination under N2 atmosphere. Through this process, silica endowed the iron oxide with low crystallinity and small size, resulting in a higher catalytic activity in the heterogeneous Fenton system for the decolorization of a methylene blue (MB) solution within 25 min. Moreover, the sample maintained 78.71% of its catalytic activity after three cycles.