Citation: Xuedong Du, Xiaohong Yi, Peng Wang, Jiguang Deng, Chong-chen Wang. Enhanced photocatalytic Cr(VI) reduction and diclofenac sodium degradation under simulated sunlight irradiation over MIL-100(Fe)/g-C₃N₄ heterojunctions[J]. Chinese Journal of Catalysis, ;2019, 40(1): 70-79. doi: 10.1016/S1872-2067(18)63160-2 shu

Enhanced photocatalytic Cr(VI) reduction and diclofenac sodium degradation under simulated sunlight irradiation over MIL-100(Fe)/g-C₃N₄ heterojunctions

a Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
b Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China

Received Date: 24 July 2018
Revised Date: 12 September 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (51578034, 51878023), the Great Wall Scholars Training Program Project of Beijing Municipality Universities (CIT&TCD20180323), the Project of Construction of Innovation Teams and Teacher Career Development for Universities and Colleges Under Beijing Municipality (IDHT20170508), the Beijing Talent Project (2017A38), the Fundamental Research Funds for Beijing Universities (X18075/X18076/X18124/X18125/X18276), and the Scientific Research Foundation of Beijing University of Civil Engineering and Architecture (KYJJ2017033/KYJJ2017008).

Metal-organic framework MIL-100(Fe) and g-C₃N₄ heterojunctions (MG-x, x=5%, 10%, 20%, and 30%, x is the mass fraction of MIL-100(Fe) in the hybrids) were facilely fabricated through ball-milling and annealing, and characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, transmission electron microscopy, UV-visible diffuse-reflectance spectrometry, and photoluminescence emission spectrometry. The photocatalytic activities of the series of MG-x heterojunctions toward Cr(VI) reduction and diclofenac sodium degradation were tested upon irradiation with simulated sunlight. The influence of different organic compounds (ethanol, citric acid, oxalic acid, and diclofenac sodium) as hole scavengers and the pH values (2, 3, 4, 6, and 8) on the photocatalytic activities of the series of MG-x heterojunctions was investigated. MG-20% showed superior photocatalytic Cr(VI) reduction and diclofenac sodium degradation performance than did the individual MIL-100(Fe) and g-C₃N₄ because of the improved separation of photoinduced electron-hole charges, which was clarified via photoluminescence emission and electrochemical data. Moreover, the MG-x exhibited good reusability and stability after several runs.
- MIL-100(Fe),
- g-C₃N₄,
- Heterojunction,
- Cr(VI) reduction,
- Diclofenac sodium
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Enhanced photocatalytic Cr(VI) reduction and diclofenac sodium degradation under simulated sunlight irradiation over MIL-100(Fe)/g-C3N4 heterojunctions

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通讯作者: 陈斌, bchen63@163.com

Enhanced photocatalytic Cr(VI) reduction and diclofenac sodium degradation under simulated sunlight irradiation over MIL-100(Fe)/g-C₃N₄ heterojunctions