Photocatalytic degradation of methylene blue over 2D CuTCPP/B–TiO2 composites

• Published in: Journal of materials science Vol. 58; no. 18; pp. 7571 - 7582
• Main Authors: Yang, Yang, Lu, Jie, Ma, Zhichun, Zhao, Yi, Wang, Shuang, Ge, Kai, Yang, Yongfang
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2023; Springer Nature B.V
• Subjects: Adsorption; Aqueous solutions; Characterization and Evaluation of Materials; Charge transfer; Chemical Routes to Materials; Chemistry and Materials Science; Classical Mechanics; Composite materials; Crystallography and Scattering Methods; Efficiency; Ethanol; Materials Science; Methylene blue; Nanostructure; Nitrates; Photocatalysis; Photodegradation; Pollutants; Polymer Sciences; Reagents; Semiconductors; Solid Mechanics; Spectrum analysis; Titanium dioxide
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-023-08505-4

Two dimensional (2D) CuTCPP/B–TiO 2 composites were successfully synthesized by addition of B–TiO 2 NPs into the system for preparation of 2D CuTCPP nanosheets under hydrothermal condition. 2D CuTCPP nanosheets with large specific surface area can not only act as supportor to decrease the aggregation of B–TiO 2 and improve the adsorption capacity of methylene blue (MB) but also provide more transfer pathway to effectively facilitate interfacial charge transfer and separation of photogenerated electrons and holes, thus leading to a superior efficiency for photodegradation of MB. The photocatalytic degradation rate constant of 2D CuTCPP/B–TiO 2 composites is 0.0486 min −1 , which is about 15.2, 5.92 and 4.23 times that of P25 (k = 0.0032 min −1 ), 2D CuTCPP nanosheets ((k = 0.0082 min −1 ) and B–TiO 2 NPs (k = 0.0115 min −1 ). This study demonstrates that the combination of B–TiO 2 NPs and 2D CuTCPP is a viable strategy to improve the photocatalytic efficiency for degradation of MB.