催化作用
钴
材料科学
介孔材料
化学工程
介孔二氧化硅
聚合物
废水
溶胶凝胶
化学
纳米技术
废物管理
有机化学
复合材料
冶金
工程类
作者
Jia Ding,Hashim Jalil Khan,Gholamreza Vahedi Sarrigani,Paul A. FitzGerald,Amirali Ebrahimi Ghadi,Olivier Lefebvre,Chao Meng,Mohd Hazarel Zairy Mohd Harun,Yong Lü,Ali Abbas,Alejandro Montoya,Dianne E. Wiley,David Wang
标识
DOI:10.1016/j.cej.2021.134435
摘要
The narrow pore channels of cobalt-silica (CoSi) catalyst generated by conventional sol–gel process limited the active site accessibility. In this work, mesoporous CoSi catalysts containing highly dispersed Co sites were synthesized by a facile sol–gel derived soft-templating technique and tested for the Fenton-like oxidation of dyes and antibiotics. By controlling the concentration of triblock polymer Pluronic F127 template, the textural and chemical properties of CoSi catalysts were fine-tuned to improve the accessibility of their active sites. The CoSi catalyst achieved ∼ 96% removal of acid orange 7 (AO7) within 15 min using a low catalyst loading (50 mg L−1) and H2O2 dosage (11 mM) at pH of 7–8. Moreover, thin-film CoSi coated on Al2O3 foam, as a monolithic catalyst prepared by the washcoating method, maintained high oxidation activity (∼99% removal for AO7) over 10 days, demonstrating excellent operational stability and process intensification for practical wastewater treatment applications.
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