期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 12, 页码 16186-16197出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b02968
关键词
MOFs; TiO2; Visible-light irradiation; Fenton-like; Adsorptive photocatalysts; Environmental remediation
资金
- National Natural Science Foundation of China [21776190, 21336005, 51773144]
- major research project of Jiangsu Province office of Education [15KJA150008]
- PAPD in Jiangsu Province
- Qinglan Project in Jiangsu Province
A convenient one-step solvothermal process to construct TiO2 nanoparticles anchored onto NH2-MIL-88B(Fe) with enhanced adsorption capacity and photocatalysis performance was reported. The TiO2@NH2-MIL-88B(Fe) (abbreviated to SU-x) exhibited excellent adsorption and photodegradation performance toward methylene blue (MB) from simulated wastewater under the irradiation of visible LED light. The enhanced catalytic capability can be mostly attributed to the improved adsorption performance and efficiently photogenerated electrons transported to the conduction band of TiO2 from that of NH2-MIL-88B(Fe). The synergistic effect of TiO2 and NH2-MIL-88B(Fe) was verified by the photocurrent response and electrochemical impedance spectroscopic analysis. Moreover, the efficiency of the photocatalyst was not significantly reduced even after being recycled 5 times, showing the good stability and reusability of TiO2@MOF. These bifunctional TiO2@MOF composites thus display excellent adsorption capability, efficient charger carrier separation, and favorable stability, providing new insights into the preparation of composite materials based on Fe-MOF with high efficiency for photocatalytic environmental remediation.
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