UiO-66(Zr)/海藻酸钠复合材料的制备优化及净化水中As(V)的性能研究

doi:10.11896/cldb.22050004

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Abstract In this work,the synthesis of metal-organic framework UiO-66(Zr)/solidum alginate(SA) composite microspheres and its adsorptive removal of As(V) from water were reported. The effects of the addition of UiO-66(Zr) powder and the drying method of the aerogel microspheres on the shaping structure and adsorption performances were comprehensively investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), nitrogen sorption and adsorption test. UiO-66(Zr)/SA microspheres with the optimal physicochemical properties were obtained by mixing 50wt% powdery UiO-66(Zr), followed by flash freezing dry method. Their adsorption behaviors over As(V) were further explored and compared with a commercial arsenic removal material MN. The results indicate that, the maximum adsorption capacity of the microspheres (18.65 mg/g) is achieved at pH=7.0 with an initial As(V) concentration of 20 mg/L under static adsoption conditon. The results of breakthrough experiment show that the microspheres material containing 1.0 g UiO-66(Zr) can treat at least 1.2 L solution with the As(V) concentration of 100 μg/L, ensuring the effluent concentration below 10 μg/L. The overall performance of UiO-66(Zr)/SA microspheres was superior to MN. Considering the showcase of green and low-cost batch preparation of UiO-66(Zr) reported by the author’s team recently, the UiO-66(Zr)/SA microspheres can be used as a potential sorbent for the deep purification of As(V) in water.

Key words： metal-organic framework UiO-66(Zr) sodium alginate flash freezing granulation arsenate(V)

Published: Online: 2022-10-26

CLC number:

X703

Fund:National Natural Science Foundation of China (21777119) and Science & Technology Commission of Shanghai Municipality (18230742300,20230712200).

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	MA Hui
	FANG Yue
	WU Yi’nan
	LI Fengting

Cite this article:

MA Hui,FANG Yue,WU Yi’nan, et al. Synthesis Optimization of UiO-66(Zr)/Sodium Alginate Composite Microspheres and Its Removal of As(V) in Water[J]. Materials Reports, 2022, 36(20): 22050004-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22050004 OR http://www.mater-rep.com/EN/Y2022/V36/I20/22050004

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