光催化
草酸
材料科学
基质(水族馆)
化学工程
催化作用
废水
多孔性
化学
核化学
无机化学
纳米技术
废物管理
复合材料
有机化学
地质学
工程类
海洋学
作者
Qian Zhao,Xiaoyan Yi,Chong-Chen Wang,Peng Wang,Weiwei Zheng
标识
DOI:10.1016/j.cej.2021.132497
摘要
MIL-101(Fe)–NH2 was hydrothermally immobilized on porous alumina substrate to fabricate MIL-101(Fe)–NH2@Al2O3 (MA) photocatalyst via a reactive seeding (RS) method. The as-prepared MA photocatalyst can accomplish 100% Cr(VI) reduction efficiency up to 20 cycles with the synergistic effect of oxalic acid upon the irradiation of white light. The influences of co-existing inorganic ions in simulated tanning wastewater on Cr(VI) reduction were evaluated via a Box-Behnken design of response surface methodology. The as-prepared MA photocatalyst can overcome the difficulty and challenge concerning the recovery and recyclability of traditional powder MOFs photocatalysts. Furthermore, a continuous fixed-bed device based on MA photocatalyst was designed, which can achieve a rapid and efficient Cr(VI) reduction under white light in lab experiment and under the real solar light in field experiment. This work provides the possibility for the continuous photocatalytic Cr(VI) reduction operation in the fixed-bed reactor.
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