TY - JOUR
T1 - Incorporating Fe-O cluster in multivariate (MTV) metal–organic frameworks for promoting visible-light photo-Fenton degradation of micropollutants from water
AU - Li, Xiang
AU - Yao, Yuli
AU - Wang, Bo
N1 - Publisher Copyright:
© 2022
PY - 2022/10/15
Y1 - 2022/10/15
N2 - Exploring efficient heterogeneous photo-Fenton catalysis is crucial for advanced water purification. In this study, a series of multivariate (MTV) metal–organic framework MIL-100 (Sc 0.98, 0.95, 0.87, 0.75, 0.58, Fe 0.02, 0.05, 0.13, 0.25 0.42) catalysts with increasing Fe contents were synthesized to effectively degrade micropollutants. By incorporating the Fe-O cluster into the framework, the degradation rate of sulfamethylthiazole (SMX) was improved 11.85 times over the MTV MIL-100 (Sc 0.58, Fe 0.42). The permanent porous structures and high surface areas (1597 m2/g ∼ 1389 m2/g) facilitated the adsorption processes. Results show that the initial adsorption rates for quinolone and anti-inflammatory groups were extremely high, with v0 = 463.16 ∼ 407.15 μg/g min. The modified material enhanced the visible-light absorption and facilitated the formation of reactive oxygen species (•OH, 1O2, and O2•−) under the irradiation of solar light. Electron paramagnetic resonance trapping technologies and quenching experiments were applied. The pathway for ROS formation under solar-light irradiation was proposed in detail. Aromatic intermediates were identified and quantitatively analyzed using UPLC-Q-TOF-MS. We believe that this strategy of incorporating mixed metal clusters in MOFs offers useful guidance to improve the performance of current materials.
AB - Exploring efficient heterogeneous photo-Fenton catalysis is crucial for advanced water purification. In this study, a series of multivariate (MTV) metal–organic framework MIL-100 (Sc 0.98, 0.95, 0.87, 0.75, 0.58, Fe 0.02, 0.05, 0.13, 0.25 0.42) catalysts with increasing Fe contents were synthesized to effectively degrade micropollutants. By incorporating the Fe-O cluster into the framework, the degradation rate of sulfamethylthiazole (SMX) was improved 11.85 times over the MTV MIL-100 (Sc 0.58, Fe 0.42). The permanent porous structures and high surface areas (1597 m2/g ∼ 1389 m2/g) facilitated the adsorption processes. Results show that the initial adsorption rates for quinolone and anti-inflammatory groups were extremely high, with v0 = 463.16 ∼ 407.15 μg/g min. The modified material enhanced the visible-light absorption and facilitated the formation of reactive oxygen species (•OH, 1O2, and O2•−) under the irradiation of solar light. Electron paramagnetic resonance trapping technologies and quenching experiments were applied. The pathway for ROS formation under solar-light irradiation was proposed in detail. Aromatic intermediates were identified and quantitatively analyzed using UPLC-Q-TOF-MS. We believe that this strategy of incorporating mixed metal clusters in MOFs offers useful guidance to improve the performance of current materials.
KW - Degradation
KW - Isostructural
KW - Micropollutants
KW - Visible-light
KW - photo-Fenton
UR - http://www.scopus.com/inward/record.url?scp=85131962836&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2022.137446
DO - 10.1016/j.cej.2022.137446
M3 - Article
AN - SCOPUS:85131962836
SN - 1385-8947
VL - 446
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 137446
ER -