Hollow silica-coated porous carbon with embedded iron oxide particles for effective methylene blue degradation |
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| Authors: | Kai Wang Kang Zhao Qingnan Meng Qian Bai Xin Li Huating Hu Hua Jiao Yufei Tang |
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| Affiliation: | Department of Materials Science and Engineering, Xi''an University of Technology, Xi''an 710048 PR China.; Shaanxi Province Key Laboratory of Corrosion and Protection, Xi''an University of Technology, Xi''an 710048 PR China |
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| Abstract: | A novel catalyst, consisting of hollow silica-coated porous carbon with embedded iron oxide particles (FeOx@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.A novel catalyst, hollow silica-coated porous carbon embedded with iron oxide (FeOx@C/SiO2), was synthesized by the extended Stöber method. |
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