Staff View: Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity

Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity

Regenerated cellulose membrane was used as bio-template nanoreactor for the formation of rutile TiO2 mesoporous, as well as in-situ carbon dopant in acidified sol-gel system. The effects of calcination temperature on the physicochemical characteristic of core-shell nanostructured of bio-templated C-...

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Main Authors:	Mohamad, Mohamed Azuwa, Wan Salleh, Wan Norharyati, Jaafar, Juhana, Rosmi, Saufi Mohamad, Mohd. Hir, Zul Adlan, Abd. Mutalib, Muhazri, Ismail, Ahmad Fauzi, Tanemura, Masaki
Format:	Article
Published:	Elsevier 2017
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/66530/ https://doi.org/10.1016/j.apsusc.2016.09.145
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spelling	my.utm.665302017-10-08T03:15:59Z http://eprints.utm.my/id/eprint/66530/ Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity Mohamad, Mohamed Azuwa Wan Salleh, Wan Norharyati Jaafar, Juhana Rosmi, Saufi Mohamad Mohd. Hir, Zul Adlan Abd. Mutalib, Muhazri Ismail, Ahmad Fauzi Tanemura, Masaki TP Chemical technology Regenerated cellulose membrane was used as bio-template nanoreactor for the formation of rutile TiO2 mesoporous, as well as in-situ carbon dopant in acidified sol-gel system. The effects of calcination temperature on the physicochemical characteristic of core-shell nanostructured of bio-templated C-doped mesoporous TiO2 are highlighted in this study. By varying the calcination temperature, the thickness of the carbon shell coating on TiO2, crystallinity, surface area, and optical properties could be tuned as confirmed by HRTEM, nitrogen adsorption/desorption measurement, XRD and UV–vis-NIR spectroscopy. The results suggested that increment in the calcination temperature would lead to the band gap narrowing from 2.95 to 2.80 eV and the thickness of carbon shell increased from 0.40 to 1.20 nm. The x-ray photoelectron spectroscopy showed that the visible light absorption capability was mainly due to the incorporation of carbon dopant at interstitial position in the TiO2 to form OTiC or TiOC bond. In addition, the formation of the carbon core-shell nanostructured was due to carbonaceous layer grafted onto the surface of TiO2 via TiOC and TiOCO bonds. The result indicated that bio-templated C-doped core-shell mesoporous TiO2 prepared at 300 °C exhibited the highest photocatalytic activity. It is worthy to note that, the calcination temperature provided a huge impact towards improving the physicochemical and photocatalytic properties of the prepared bio-templated C-doped core-shell mesoporous TiO2. Elsevier 2017-01-01 Article PeerReviewed Mohamad, Mohamed Azuwa and Wan Salleh, Wan Norharyati and Jaafar, Juhana and Rosmi, Saufi Mohamad and Mohd. Hir, Zul Adlan and Abd. Mutalib, Muhazri and Ismail, Ahmad Fauzi and Tanemura, Masaki (2017) Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity. Applied Surface Science, 393 . pp. 46-59. ISSN 0169-4332 https://doi.org/10.1016/j.apsusc.2016.09.145 DOI:10.1016/j.apsusc.2016.09.145
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TP Chemical technology
spellingShingle	TP Chemical technology Mohamad, Mohamed Azuwa Wan Salleh, Wan Norharyati Jaafar, Juhana Rosmi, Saufi Mohamad Mohd. Hir, Zul Adlan Abd. Mutalib, Muhazri Ismail, Ahmad Fauzi Tanemura, Masaki Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity
description	Regenerated cellulose membrane was used as bio-template nanoreactor for the formation of rutile TiO2 mesoporous, as well as in-situ carbon dopant in acidified sol-gel system. The effects of calcination temperature on the physicochemical characteristic of core-shell nanostructured of bio-templated C-doped mesoporous TiO2 are highlighted in this study. By varying the calcination temperature, the thickness of the carbon shell coating on TiO2, crystallinity, surface area, and optical properties could be tuned as confirmed by HRTEM, nitrogen adsorption/desorption measurement, XRD and UV–vis-NIR spectroscopy. The results suggested that increment in the calcination temperature would lead to the band gap narrowing from 2.95 to 2.80 eV and the thickness of carbon shell increased from 0.40 to 1.20 nm. The x-ray photoelectron spectroscopy showed that the visible light absorption capability was mainly due to the incorporation of carbon dopant at interstitial position in the TiO2 to form OTiC or TiOC bond. In addition, the formation of the carbon core-shell nanostructured was due to carbonaceous layer grafted onto the surface of TiO2 via TiOC and TiOCO bonds. The result indicated that bio-templated C-doped core-shell mesoporous TiO2 prepared at 300 °C exhibited the highest photocatalytic activity. It is worthy to note that, the calcination temperature provided a huge impact towards improving the physicochemical and photocatalytic properties of the prepared bio-templated C-doped core-shell mesoporous TiO2.
format	Article
author	Mohamad, Mohamed Azuwa Wan Salleh, Wan Norharyati Jaafar, Juhana Rosmi, Saufi Mohamad Mohd. Hir, Zul Adlan Abd. Mutalib, Muhazri Ismail, Ahmad Fauzi Tanemura, Masaki
author_facet	Mohamad, Mohamed Azuwa Wan Salleh, Wan Norharyati Jaafar, Juhana Rosmi, Saufi Mohamad Mohd. Hir, Zul Adlan Abd. Mutalib, Muhazri Ismail, Ahmad Fauzi Tanemura, Masaki
author_sort	Mohamad, Mohamed Azuwa
title	Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity
title_short	Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity
title_full	Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity
title_fullStr	Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity
title_full_unstemmed	Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity
title_sort	carbon as amorphous shell and interstitial dopant in mesoporous rutile tio2: bio-template assisted sol-gel synthesis and photocatalytic activity
publisher	Elsevier
publishDate	2017
url	http://eprints.utm.my/id/eprint/66530/ https://doi.org/10.1016/j.apsusc.2016.09.145
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score	13.211869

Carbon as amorphous shell and interstitial dopant in mesoporous rutile TiO2: bio-template assisted sol-gel synthesis and photocatalytic activity

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