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Updated: May 3, 2026
Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
Published on: December 15, 2015
In-situ synthesized multifunctional petal-like geopolymer/Mo₂S₃ composite membrane for water purification and
Qianyi Yang1, Shiliang Chu1, Mingxing Li2
1School of Chemistry and Chemical Engineering, Key Laboratory of Chemistry and Engineering of Forest Products of State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning, Guangxi 530006, PR China.
Abstract:
In this paper, a multi-functional petal-like geopolymer/Mo₂S₃ composite membrane (PG/Mo₂S₃CM) was synthesized in situ through the hydrothermal method, with a porous geopolymer membrane (PGM), thiourea, and sodium molybdate as the raw materials. When the contents of thiourea and sodium molybdate were 4.14 g and 4.38 g respectively, the PG/Mo₂S₃CM demonstrated optimal performance in water treatment. The high degradation rate of Rhodamine B (RB) and the significant removal rate of Ni(Ⅱ) exceeded 99 % and 92 % respectively. The PG/Mo₂S₃CM exhibits excellent continuous use performance, reusability performance, and environmental tolerance. Under one sun irradiation, the evaporation rate of the PG/Mo₂S₃CM reached 1.53 kg·m⁻²·h⁻¹ . The experimental results confirm the enhancing mechanisms of RB and Ni(Ⅱ) removal. The increase in •OH, sulfur vacancies, and the synergistic effect between PGM and Mo₂S₃ are the reasons for the high performance of PG/Mo₂S₃CM. The enhancing mechanisms of solar-driven evaporation on PG/Mo₂S₃CM involve the synergistic effect of the good water transfer rate of PGM and the excellent photothermal effect of molybdenum sulfide. This work offers a novel strategy for the development of a multifunctional geopolymer composite material for use in the field of water purification and recovery.
