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A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab

In this study, two different preparations of graphitic carbon nitride / titanium dioxide (g-C3N4/TiO2) photocatalysts were prepared by using two different titania precursors (tetrabutyl ortotitanate (TBOT) and Degussa P25) with 1, 2, and 5 wt% of graphitic carbon nitride using in situ sol gel hydrot...

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Main Author: Ab Wahab, Zawani
Format: Student Project
Language:English
Published: 2023
Subjects:
Photochemistry
Online Access:https://ir.uitm.edu.my/id/eprint/87643/1/87643.pdf
https://ir.uitm.edu.my/id/eprint/87643/
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spelling my.uitm.ir.876432023-12-09T14:36:44Z https://ir.uitm.edu.my/id/eprint/87643/ A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab Ab Wahab, Zawani Photochemistry In this study, two different preparations of graphitic carbon nitride / titanium dioxide (g-C3N4/TiO2) photocatalysts were prepared by using two different titania precursors (tetrabutyl ortotitanate (TBOT) and Degussa P25) with 1, 2, and 5 wt% of graphitic carbon nitride using in situ sol gel hydrothermal method. The photocatalytic activity of prepared samples was measured under methylene blue (MB) and reactive red 4 (RR4) dyes using 55-Watt fluorescent lamp. 2 wt.% g-C3N4 incorporated with TiO2 using TBOT as precursor (2% g-C3N4/TiO2) gave the highest photocatalytic degradation rates among the other photocatalysts under MB and RR4 dyes at 0.0321 and 0.0651 cm-1, respectively. While, 2 wt.% g-C3N4 incorporated with TiO2 using P25 as precursor (2% g-C3N4/P25) gave the highest photocatalytic degradation rates among the other photocatalysts under MB and RR4 dyes at 0.0337 and 0.0553 cm-1 respectively. This study shows that two different optimum k values were observed under two types of sample’s precursors. The g-C3N4/TiO2 gave high k value in RR4 dye while g-C3N4/P25 give high k value in MB dye. The different photocatalytic performance is due to the differential point of zero charge (pzc) analysis were ca. 4.6 and 6.2 for 2% g-C3N4/TiO2 and 2%g-C3N4/P25, respectively. The FTIR and XRD analyses showed that the samples exhibit all the peaks for g-C3N4 and TiO2 which indicates the presence both compounds in the prepared samples. The morphology of the prepared samples was elucidated via FESEM shows the graphitic carbon nitride successfully dispersed on the TiO2. It shows that the 2% composite of g-C3N4/TiO2 has smallest particle size and also largest specific surface are which can leads to the increasing of dispersion and diffusion of electron between photocatalyst and dyes. 2023-02-16 Student Project NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/87643/1/87643.pdf A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab. (2023) [Student Project] (Submitted)
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Photochemistry
spellingShingle Photochemistry
Ab Wahab, Zawani
A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab
description In this study, two different preparations of graphitic carbon nitride / titanium dioxide (g-C3N4/TiO2) photocatalysts were prepared by using two different titania precursors (tetrabutyl ortotitanate (TBOT) and Degussa P25) with 1, 2, and 5 wt% of graphitic carbon nitride using in situ sol gel hydrothermal method. The photocatalytic activity of prepared samples was measured under methylene blue (MB) and reactive red 4 (RR4) dyes using 55-Watt fluorescent lamp. 2 wt.% g-C3N4 incorporated with TiO2 using TBOT as precursor (2% g-C3N4/TiO2) gave the highest photocatalytic degradation rates among the other photocatalysts under MB and RR4 dyes at 0.0321 and 0.0651 cm-1, respectively. While, 2 wt.% g-C3N4 incorporated with TiO2 using P25 as precursor (2% g-C3N4/P25) gave the highest photocatalytic degradation rates among the other photocatalysts under MB and RR4 dyes at 0.0337 and 0.0553 cm-1 respectively. This study shows that two different optimum k values were observed under two types of sample’s precursors. The g-C3N4/TiO2 gave high k value in RR4 dye while g-C3N4/P25 give high k value in MB dye. The different photocatalytic performance is due to the differential point of zero charge (pzc) analysis were ca. 4.6 and 6.2 for 2% g-C3N4/TiO2 and 2%g-C3N4/P25, respectively. The FTIR and XRD analyses showed that the samples exhibit all the peaks for g-C3N4 and TiO2 which indicates the presence both compounds in the prepared samples. The morphology of the prepared samples was elucidated via FESEM shows the graphitic carbon nitride successfully dispersed on the TiO2. It shows that the 2% composite of g-C3N4/TiO2 has smallest particle size and also largest specific surface are which can leads to the increasing of dispersion and diffusion of electron between photocatalyst and dyes.
format Student Project
author Ab Wahab, Zawani
author_facet Ab Wahab, Zawani
author_sort Ab Wahab, Zawani
title A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab
title_short A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab
title_full A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab
title_fullStr A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab
title_full_unstemmed A comparison study of the graphitic carbon nitride Coupled TiO2 prepared by using titania precursor and Degussa P25 TiO2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / Zawani Ab Wahab
title_sort comparison study of the graphitic carbon nitride coupled tio2 prepared by using titania precursor and degussa p25 tio2 under photocatalytic degradation of methylene blue and reactive red 4 dyes / zawani ab wahab
publishDate 2023
url https://ir.uitm.edu.my/id/eprint/87643/1/87643.pdf
https://ir.uitm.edu.my/id/eprint/87643/
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score 13.211869

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