College of Chemistry and Chemical Engineering, Yang Zhou University, Yangzhou, People's Republic of China.
Environ Technol. 2021 Aug;42(20):3218-3230. doi: 10.1080/09593330.2020.1725142. Epub 2020 Feb 11.
Adsorption and Fenton technologies have been widely employed to deal with wastewater. ZnFeO/SiO magnetic double-mesoporous-shelled hollow spheres (MDSHSs) were feasibly synthesized by a solvothermal method. The as-synthesized MDSHSs show excellent adsorption and selectivity for methylene blue (MB), which it took about only 1 min to reach the adsorption equilibrium. About 50% MB was removed by adsorption, and other 50% MB was degraded under further photo-Fenton process. Effects of experimental conditions on the adsorption and photo-Fenton process were investigated. The mechanisms of MDSHSs formation and photo-Fenton process were proposed. Total organic carbon (TOC) reduction reached as high as 90% with 60 mg/L of MB for 90 min. The experimental results indicated that MDSHSs exhibit a remarkable adsorption and catalytic activity for photo-Fenton process in a wide pH range of 3.3-11.0. Simultaneously, the composite shows an excellent stability and reusability.
吸附和芬顿技术已被广泛用于处理废水。采用溶剂热法成功合成了 ZnFeO/SiO 磁性双介孔壳层空心球（MDSHSs）。所合成的 MDSHSs 对亚甲基蓝（MB）具有优异的吸附和选择性，吸附平衡仅需约 1 分钟即可达到。约 50%的 MB 通过吸附去除，其余 50%的 MB 在进一步的光芬顿过程中被降解。考察了实验条件对吸附和光芬顿过程的影响。提出了 MDSHSs 形成和光芬顿过程的机理。当以 60mg/L 的 MB 处理 90min 时，TOC 去除率高达 90%。实验结果表明，MDSHSs 在 3.3-11.0 的宽 pH 范围内对光芬顿过程表现出显著的吸附和催化活性。同时，该复合材料表现出优异的稳定性和可重复使用性。
