Synthesis of a 2D Cu@TiO2 composite via the design of a 1D Cu-based coordination polymer precursor for efficient and selective photodegradation of dyes

• Main Authors: Li, W.-Z (Author), Liu, Y. (Author), Luan, J. (Author), Xu, N. (Author), Zhang, X.-S (Author), Zhang, Y.-Q (Author), Zhao, H.-T (Author)
• Format: Article
• Language: English
• Published: Royal Society of Chemistry 2022
• Subjects: Coordination Polymers; Coordination reactions; Coordination-polymers; Copper compounds; Crystalline structure; Cu-based; Lows-temperatures; Microfiltration; Organic pollutants; Photo degradation; Polymer precursors; Porous structures; Pyridyl; Synthesised; Temperature; Titanium dioxide
• Online Access: View Fulltext in Publisher

 A 2D Cu@TiO2 composite with a porous and crystalline structure was successfully synthesized via one-step and low-temperature calcination of a 1D Cu-based coordination polymer (Cu-CP), namely [Cu2(3-dpha)(1,4-NDC)2(H2O)3]n (3-dpha = N,N′-bis(3-pyridyl)adipamide and 1,4-H2NDC = 1,4-naphthalenedicarboxylic acid). Moreover, the Cu@TiO2 membrane was fabricated by a simple filtration of the as-grown Cu@TiO2 composite. Compared with the benchmark TiO2 photocatalyst, the Cu@TiO2 composite material with high specific surface area and reduced photogenerated electron-hole ratio exhibited good photodegradation activity and durability for gentian violet (GV), which could be attributed to the combined effect of co-doping of Cu and TiO2 structure. Furthermore, the ˙OH and ˙O2− radicals were predicted to dominate the photocatalytic process. Therefore, this new efficient photocatalyst is a promising candidate for efficient and selective photodegradation of organic pollutants. © 2022 The Royal Society of Chemistry