Modified TiO2 nanotubes-zeolite composite photocatalyst: Characteristics, microstructure and applicability for degrading triclocarban

Arifin, Siti Nor Hidayah and Mohamed, Radin Maya Saphira Radin and Al-Gheethi, Adel Ali and Wei, Lai Chin and Yashni, G. and Fitriani, Nurina and Naushad, Mu and Albadarin, Ahmad B. (2022) Modified TiO2 nanotubes-zeolite composite photocatalyst: Characteristics, microstructure and applicability for degrading triclocarban. Chemosphere, 287 (3). ISSN 0045-6535, DOI

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The study explored the characteristics and effectiveness of modified TiO2 nanotubes with zeolite as a composite photocatalyst (MTNZC) for the degradation of triclocarban (TCC) from the aqueous solution. MTNZC samples have been produced via electrochemical anodisation (ECA) followed by electrophoretic deposition (EPD). Three independent factors selected include MTNZC size (0.5-1 cm(2)), pH (3-10), and irradiation time (10-60 min). The observation revealed that the surface of Ti substrate by the 40 V of anodisation and 3 h of calcination was covered with the array ordered, smooth and optimum elongated nanotubes with average tube length was approximately 5.1 mu m. EDS analysis proved the presence of Si, Mg, Al, and Na on MTNZC due to the chemical composition present in the zeolite. The average crystallite size of TiO2 nanotubes increased from 2.07 to 3.95 nm by increasing anodisation voltage (10, 40, and 60 V) followed by 450 degrees C of calcination for 1, 3, and 6 h, respectively. The optimisation by RSM shows the F-value (36.12), the p-value of all responses were less than 0.0001, and the 95% confidence level of the model by all the responses indicated the model was significant. The R2 in the range of 0.9433-0.9906 showed the suitability of the model to represent the actual relationship among the parameters. The photocatalytic degradation rate of TCC from the first and the fifth cycles were 94.2 and 77.4%, indicating the applicability of MTNZC to be used for several cycles.

Item Type: Article
Funders: Ministry of Education, Malaysia [Grant No: FRGS/1/2018/WAB05/UTHM/02/2], Universiti Tun Hussein Onn Malaysia for GPPS [Grant No: U777], King Saud University [Grant No: RSP-2021/8]
Uncontrolled Keywords: Electrochemical anodisation; Electrophoretic deposition; Photocatalytic degradation; Triclocarban; Zeolite
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Apr 2022 03:53
Last Modified: 26 Apr 2022 03:53

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