期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 874, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.159865
关键词
(Ti3C2/TiO2)@rGO; Photocatalysis; Schottky barrier; Simultaneous pollutant removal
The novel photocatalyst (Ti3C2/TiO2)@rGO was synthesized to efficiently remove hexavalent chromium and Rhodamine B from wastewater, showing enhanced photocatalytic activity due to improved electron-hole separation efficiency. Ti3C2 played a key role in electron collection and transfer, enhancing the separation efficiency of electrons and holes, suggesting a promising approach to promote photocatalytic activity.
A novel photocatalyst of rGO-wrapped Ti3C2/TiO2 nanowires ((Ti3C2/TiO2)@rGO) was successfully synthesized to remove hexavalent chromium (Cr(VI)) and Rhodamine B (RhB) from wastewater. Among the prepared photocatalysts, (Ti3C2/TiO2)@rGO-15 showed the highest photocatalytic activity in both single and mixed pollutant solutions. The excellent photocatalytic activity was ascribed to the enhanced separation efficiency of e(-) and h(+) resulted from the Schottky barrier established in (Ti3C2/TiO2)@rGO. Ti3C2 gathered the stimulated electrons originated from TiO2 and further transferred them to rGO, thus enhancing the separation efficiency of e(-) and h(+). Furthermore, different scavengers were employed to determine the reactive species involved in the photocatalytic reaction system. This work may provide a promising way to promote the separation efficiency of e(-) and h(+) via appropriate incorporation of co-catalyst. (c) 2021 Elsevier B.V. All rights reserved.
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