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Advanced synthesis of MXene-derived nanoflower-shaped TiO2@Ti3C2 heterojunction to enhance photocatalytic degradation of Rhodamine B

Authors: 

Vu Thi Quyen, Le Thi Thu Ha, Dang My Thanh, Quyet Van Le, Nguyen Minh Viet, Nguyen Thi Nham, Phan Quang Thang

Source title: 
Environmental Technology and Innovation, 21: 101286, 2021 (ISI)
Academic year of acceptance: 
2021-2022
Abstract: 

Advanced synthesis of nanoflower structures consisting of TiO2@Ti3C2 nanoflowers with three-dimensional (3D) porous frameworks from two-dimensional (2D) Ti3C2 MXene was done and applied for degradation of organic pollutant. The special structure of material was created by the in situ transformation, starting from Ti3C2Tx MXene as provision of Ti source. The basis properties of material were characterized by SEM, TEM, XRD and XPS. The Ti3C2Tx MXene showed layered structure and then this morphology was replaced by nanoflower spheres with rapid growth of TiO2@Ti3C2 nanowhiskers. In terms of application, the TiO2@Ti3C2 heterojunction showed an extraordinary photocatalytic efficiency toward Rhodamine B (RhB) compared to performances of pristine Ti3C2, and commercial TiO2. In addition, the TiO2@Ti3C2 composite also displays the good recyclability even after 5th degradation cycles. Based on the finding, it gains a deeper insight into practical applications of 2D transition metal carbide for treatment of organic pollutants in wastewater.