Abstract
The existence of residual organic dyes in water resources or wastewater treatment systems with industrial wastewater as the main source is a major environmental problem that is difficult to solve. Three eco-friendly and water-resistant supramolecular compounds were prepared using BHMTA (BHMTA = N-benzyl hexamethylenetetramine bromide) as a template. In the limited environment of supramolecules, organic dyes are efficiently removed in water. Compound {[BHMTA]2 [β-Mo8O26]·[H3O+]2·[H2O]3} (3) can achieve high efficiency by capturing more than 90% of methylene blue dye content even at very low concentrations (1 × 10−5 mol/L). The effects of the amount of adsorbent, temperature, and acid and alkali on the adsorption of organic dyes were systematically studied. The adsorption behavior of compound 3 fits well with the quasi-second-order kinetic model and the Langmuir model. The maximum adsorption capacity of methylene blue (MB) (950 mg/g) is higher than the most reported adsorbent. More importantly, compound 3 still had a higher adsorption effect after three cycles. These results indicate that the compound treatment wastewater has potential application prospects.
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Research efforts in the Niu’s Group are supported by the National Natural Science Foundation of China (No. 21671177).
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Wang, X., Qiao, X., Li, Y. et al. Preparation of Water-Resistant Supramolecular Compounds ({[BHMTA]2 [CdI4]} (1), {[BHMTA]2 [Pb2I6]}n (2) and {[BHMTA]2 [β-Mo8O26]·[H3O+]2·[H2O]3}(3) (BHMTA = N-benzylhexamethylenetetramine bromide) and the Application in the Removal of Methylene Blue in Aqueous Solution. J Clust Sci 33, 665–673 (2022). https://doi.org/10.1007/s10876-021-01988-8
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DOI: https://doi.org/10.1007/s10876-021-01988-8