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Synthesis and Photocatalytic Activity for Toluene Removal of CDs/TiO2 - Zeolite Y

1Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 267 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam

2Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam

Received: 11 Oct 2022; Revised: 12 Dec 2022; Accepted: 20 Dec 2022; Available online: 21 Dec 2022; Published: 30 Dec 2022.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2022 by Authors, Published by BCREC Group
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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Hydrothermally synthesized carbon nanodots (CDs) were impregnated on TiO2. The product (CDs/TiO2) was mechanically mixed with zeolite Y for application in toluene photocatalytic oxidation reaction under UV radiation. Material properties of the samples were investigated by different methods. Toluene vapor was chosen as a typical volatile organic compound to investigate the performance of CDs/TiO2 – zeolite Y photocatalyst when these technological parameters were changed: toluene concentration, gas flow rate, humidity and UV light intensity. In each reaction, only one parameter was changed and the remaining conditions were fixed. The toluene concentrations at the beginning and the end of each reaction were analyzed with the use of gas chromatography (GC). The results of different reaction conditions show the trends for toluene treatment of the CDs/TiO2 – zeolite Y catalyst, thereby providing specific explanations for these trends. The experiments also show that toluene removal is highest when the toluene concentration in the inlet gas is 314 ppmv, the flow rate is 3 L/h, the humidity is 60%, and the catalyst (CDs/TiO2 – zeolite Y composite with 70% zeolite in weight) is illuminated by 4 UV lamps. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (


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Keywords: Zeolite; Photocatalyst; Toluene; Carbon nanodots; TiO2
Funding: Ho Chi Minh City University of Technology (HCMUT)

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