Two Cu(I\II) Coordination Polymers for Photocatalytic Degradation of Organic Dyes and Efficient Detection of Fe3+ Ions

Abstract

Two new copper-based coordination polymers (CPs), {[Cu I (H 2 PO 4 )(dpe)] 5 (dpe) 0.5 (H 2 O) 7 } n (Cu-dpe(I)) and {[Cu II (HPO 4 )(dpe)(H 2 O)](H 2 O) 3 } n (Cu-dpe(II)) (dpe = 1,2-di(4-pyridyl)ethylene), had been successfully constructed by hydrothermal method and ball milling method respectively. The crystal structures of two coordination polymers were determined by single crystal X-ray diffraction. The synthetic temperature caused their structure differences. The differences of structure and properties between these two coordination polymers were discussed. In this work, they both exhibit excellent photocatalytic activity toward the degradation of methylene blue (MB) under visible light. Among them, Cu-dpe(I) and Cu-dpe(II) could degrade MB more than 88.1% in 120 minutes under visible light. Some active free radicals such as •OH, •O 2-, eplayed an important role in degradation of MB. In addition, luminescent experiment revealed Cu-dpe(I) exhibits a relatively high sensitive and selective detection of Fe 3+ ions in water solution. Experimental results show that the uorescence quenching was caused by competitive absorption of excitation wavelength energy between Fe 3+ and Cu-dpe(I).

Systematic Review of Degradation Processes for Microplastics: Progress and Prospects

“…In 2021, Zhu et al [73] successfully prepared a material (rGO@Fe 3 O 4 /Cu 2 O@ZnO) with strong hydrophobicity, high photocatalytic performance, and recyclability, and its photocatalytic degradation efficiency of acrylamide (AM) reached 97.3%. In addition to this, a large number of studies have reported the study of photocatalysts such as Cu 2 O [74,75], α-Fe 2 O 3 [76,77], Au [78], Ag [79], and Cu [80] for polymer degradation. Photocatalytic oxidation can utilize solar energy and save energy.…”

Semiconducting Copper(I) Iodide 2D-Coordination Polymers for Efficient Sunlight-Driven Photocatalysis in Dye Degradation

“…The abundant presence of copper iodide metal clusters contributes to the semiconducting nature of the synthesized CPs. Recent studies have shown that while Cu­(I) CPs are effective in degrading dyes, they have the drawback of prolonged dye degradation time and low recyclability. , The applicability of CP1 and CP2 was also explored as photocatalysts for the degradation of methylene blue (MB) and rhodamine B (RHB) under sunlight. Our compounds show excellent photocatalytic efficiency with less time and high recyclability.…”