Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap

Abstract A convenient route was developed for the selective preparation of two stable nanocomposites, Ti3+/TiO2/CNT (labeled as TTOC-1 and TTOC-3) and Ti3+/TiO2/carbon layer (labeled as TTOC-2), from the same precursor by varying the amount of single-walled carbon nanotubes used in the synthesis. Ti...

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Autores principales:	Jeasmin Akter, Md. Abu Hanif, Md. Akherul Islam, Kamal Prasad Sapkota, Jae Ryang Hahn
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c8d44a36de494a82811638855cfad5d9
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spelling	oai:doaj.org-article:c8d44a36de494a82811638855cfad5d92021-12-02T16:51:50ZSelective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap10.1038/s41598-021-89026-52045-2322https://doaj.org/article/c8d44a36de494a82811638855cfad5d92021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89026-5https://doaj.org/toc/2045-2322Abstract A convenient route was developed for the selective preparation of two stable nanocomposites, Ti3+/TiO2/CNT (labeled as TTOC-1 and TTOC-3) and Ti3+/TiO2/carbon layer (labeled as TTOC-2), from the same precursor by varying the amount of single-walled carbon nanotubes used in the synthesis. TiO2 is an effective photocatalyst; however, its wide bandgap limits its usefulness to the UV region. As a solution to this problem, our prepared nanocomposites exhibit a small bandgap and wide visible-light (VL) absorption because of the introduction of carbonaceous species and Ti3+ vacancies. The photocatalytic efficiency of the nanocomposites was examined via the degradation of methylene blue dye under VL. Excellent photocatalytic activity of 83%, 98%, and 93% was observed for TTOC-1, TTOC-2, and TTOC-3 nanocomposites within 25 min. In addition, the photocatalytic degradation efficiency of TTOC-2 toward methyl orange, phenol, rhodamine B, and congo red was 28%, 69%, 71%, and 91%, respectively, under similar experimental conditions after 25 min. Higher reusability and structural integrity of the as-synthesized photocatalyst were confirmed within five consecutive runs by photocatalytic test and X-ray diffraction analysis, respectively. The resulting nanocomposites provide new insights into the development of VL-active and stable photocatalysts with high efficiencies.Jeasmin AkterMd. Abu HanifMd. Akherul IslamKamal Prasad SapkotaJae Ryang HahnNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jeasmin Akter Md. Abu Hanif Md. Akherul Islam Kamal Prasad Sapkota Jae Ryang Hahn Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap
description	Abstract A convenient route was developed for the selective preparation of two stable nanocomposites, Ti3+/TiO2/CNT (labeled as TTOC-1 and TTOC-3) and Ti3+/TiO2/carbon layer (labeled as TTOC-2), from the same precursor by varying the amount of single-walled carbon nanotubes used in the synthesis. TiO2 is an effective photocatalyst; however, its wide bandgap limits its usefulness to the UV region. As a solution to this problem, our prepared nanocomposites exhibit a small bandgap and wide visible-light (VL) absorption because of the introduction of carbonaceous species and Ti3+ vacancies. The photocatalytic efficiency of the nanocomposites was examined via the degradation of methylene blue dye under VL. Excellent photocatalytic activity of 83%, 98%, and 93% was observed for TTOC-1, TTOC-2, and TTOC-3 nanocomposites within 25 min. In addition, the photocatalytic degradation efficiency of TTOC-2 toward methyl orange, phenol, rhodamine B, and congo red was 28%, 69%, 71%, and 91%, respectively, under similar experimental conditions after 25 min. Higher reusability and structural integrity of the as-synthesized photocatalyst were confirmed within five consecutive runs by photocatalytic test and X-ray diffraction analysis, respectively. The resulting nanocomposites provide new insights into the development of VL-active and stable photocatalysts with high efficiencies.
format	article
author	Jeasmin Akter Md. Abu Hanif Md. Akherul Islam Kamal Prasad Sapkota Jae Ryang Hahn
author_facet	Jeasmin Akter Md. Abu Hanif Md. Akherul Islam Kamal Prasad Sapkota Jae Ryang Hahn
author_sort	Jeasmin Akter
title	Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap
title_short	Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap
title_full	Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap
title_fullStr	Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap
title_full_unstemmed	Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap
title_sort	selective growth of ti3+/tio2/cnt and ti3+/tio2/c nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering tio2-bandgap
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c8d44a36de494a82811638855cfad5d9
work_keys_str_mv	AT jeasminakter selectivegrowthofti3tio2cntandti3tio2cnanocompositeforenhancedvisiblelightutilizationtodegradeorganicpollutantsbyloweringtio2bandgap AT mdabuhanif selectivegrowthofti3tio2cntandti3tio2cnanocompositeforenhancedvisiblelightutilizationtodegradeorganicpollutantsbyloweringtio2bandgap AT mdakherulislam selectivegrowthofti3tio2cntandti3tio2cnanocompositeforenhancedvisiblelightutilizationtodegradeorganicpollutantsbyloweringtio2bandgap AT kamalprasadsapkota selectivegrowthofti3tio2cntandti3tio2cnanocompositeforenhancedvisiblelightutilizationtodegradeorganicpollutantsbyloweringtio2bandgap AT jaeryanghahn selectivegrowthofti3tio2cntandti3tio2cnanocompositeforenhancedvisiblelightutilizationtodegradeorganicpollutantsbyloweringtio2bandgap
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Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO2-bandgap

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