Visible-Light-Driven Photocatalytic Degradation of Rhodamine B over Bimetallic Cu/Ti-MOFs

Hong Tham Thi Nguyen (Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, Ward 13, District 4, Ho Chi Minh City, 700000, Vietnam Faculty of Food and Environmental Engineering, Nguyen Tat Thanh Universi)
Kim Ngan Thi Tran (Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, Ward 13, District 4, Ho Chi Minh City, 700000, Vietnam Faculty of Food and Environmental Engineering, Nguyen Tat Thanh Universi)
Thuy Bich Tran (Institute of Environmental Science, Engineering and Management, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Street, Ward 4, Go Vap District, Ho Chi Minh City, Vietnam)
Thanh Trung Nguyen (Nanomaterial Laboratory, An Giang University, 18 Ung Van Khienn St., Dong Xuyen Dist, Long Xuyen City, An Giang Province, Vietnam Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam)
Sy Trung Do (Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi City, Vietnam)
Kim Oanh Thi Nguyen (Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, Ward 13, District 4, Ho Chi Minh City, 700000, Vietnam Faculty of Food and Environmental Engineering, Nguyen Tat Thanh Universi)

Indonesian Journal of Chemistry
Vol 22, No 2 (2022)

The first copper-doped titanium-based amine-dicarboxylate metal-organic framework was synthesized by the solvothermal approach in this article, with a Cu2+/Ti4+ ratio of 0.15 (15% Cu/Ti-MOFs). X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectra, N2 adsorption-desorption studies, and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS) were all used to identify the crystalline and properties of the semiconductors. The rate constants of 15% Cu/Ti-MOFs to degrade Rhodamine B (RhB) were roughly two times higher than NH2-Ti-MOFs. Furthermore, 15% Cu/Ti-MOFs photocatalysts remained stable after three cycles. The trapping test revealed that the principal active species in the degradation performance were hydroxyl radicals and holes.