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6. Supplementary Material from Facile synthesis of magnesium-based metal-organic framework with tailored nanostructure for effective volatile organic compounds adsorption

Author

Hu, Zichu, Liu, Hui, Zuo, Ya, Ji, Yufei, Li, Shujing, Zhang, Wanqi, Liu, Zhechen, Chen, Zhangjing, Zhang, Xiaotao, and Wang, Ximing

Abstract

A novel Mg(II) metal-organic framework (Mg-MOF) was synthesized based on the ligand of 2,2'-bipyridine-4,4'-dicarboxylic acid. Single-crystal X-ray structural analysis confirmed that three-dimensional-nanostructure Mg-MOFs formed a monoclinic system with a channel size of 15.733 �� �� 23.736 ��. The N2 adsorption isotherm, Fourier transform infrared spectroscopy, thermogravimetric analysis and high-resolution transmission electron microscopy were performed to characterize the thermal stability and purity of the Mg-MOFs. The adsorption studies on four typical volatile organic compounds (VOCs) emitted during wood drying showed that Mg-MOFs have noteworthy adsorption capacities, especially for benzene and ��-pinene with adsorptions of 182.26 mg g���1 and 144.42 mg g���1, respectively. In addition, the adsorption of Mg-MOFs mainly occurred via natural adsorption, specifically, multi-layer physical adsorption, accompanied by chemical forces, which occurred in the pores where the VOCs molecules combined with active sites. As an adsorbent, Mg-MOFs exhibit versatile behaviour for toxic-gas accumulation.

Published
2022
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11. Lignocellulose-Based Superabsorbent Polymer Gel Crosslinked with Magnesium Aluminum Silicate for Highly Removal of Zn (II) from Aqueous Solution

Author

An, Yuhong, primary, Zhang, Wanqi, additional, Liu, Hui, additional, Zhong, Yuan, additional, Hu, Zichu, additional, Shao, Yali, additional, Chen, Zhangjing, additional, Ren, Yukun, additional, Wang, Boyun, additional, Wang, Sunguo, additional, Zhang, Xiaotao, additional, and Wang, Ximing, additional

Published
2021
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13. Eu-Doped Zeolitic Imidazolate Framework-8 Modified Mixed-Crystal TiO 2 for Efficient Removal of Basic Fuchsin from Effluent.

Author

Zhang, Wanqi, Liu, Hui, Liu, Zhechen, An, Yuhong, Zhong, Yuan, Hu, Zichu, Li, Shujing, Chen, Zhangjing, Wang, Sunguo, Sheng, Xianliang, Zhang, Xiaotao, and Wang, Ximing

Subjects
TITANIUM dioxide, X-ray photoelectron spectroscopy, PHOTODEGRADATION, RARE earth metals, TRANSMISSION electron microscopy, REFLECTANCE spectroscopy
Abstract

Zeolitic imidazolate framework-8 (ZIF-8) was doped with a rare-earth metal, Eu, using a solvent synthesis method evenly on the surface of a mixed-crystal TiO2(Mc-TiO2) structure in order to produce a core–shell structure composite ZIF-8(Eu)@Mc-TiO2 adsorption photocatalyst with good adsorption and photocatalytic properties. The characterisation of ZIF-8(Eu)@Mc-TiO2 was performed via X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller analysis (BET) and ultraviolet–visible light differential reflectance spectroscopy (UV-DRs). The results indicated that Eu-doped ZIF-8 was formed evenly on the Mc-TiO2 surface, a core–shell structure formed and the light-response range was enhanced greatly. The ZIF-8(Eu)@Mc-TiO2 for basic fuchsin was investigated to validate its photocatalytic performance. The effect of the Eu doping amount, basic fuchsin concentration and photocatalyst dosage on the photocatalytic efficiency were investigated. The results revealed that, when 5%-Eu-doped ZIF-8(Eu)@Mc-TiO2 (20 mg) was combined with 30 mg/L basic fuchsin (100 mL) under UV irradiation for 1 h, the photocatalytic efficiency could reach 99%. Further, it exhibited a good recycling performance. Thus, it shows certain advantages in its degradation rate and repeatability compared with previously reported materials. All of these factors suggested that, in an aqueous medium, ZIF-8(Eu)@Mc-TiO2 is an eco-friendly, sustainable and efficient material for the photocatalytic degradation of basic fuchsin. [ABSTRACT FROM AUTHOR]

Published
2021
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