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Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies

Alcohols or solvents have attained much attraction in scientific community to regulate the shape and surface characteristics of TiO2 for multiple applications. Herein, single-walled TiO2 nanotubes (SWTNTs) were synthesized via the simple hydrothermal method in presence of different organic solvents,...

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Main Authors: Zulfiqar, M., Chowdhury, S., Samsudin, M.F.R., Siyal, A.A., Omar, A.A., Ahmad, T., Sufian, S.
Format: Article
Published: Elsevier Ltd 2020
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087495556&doi=10.1016%2fj.jwpe.2020.101491&partnerID=40&md5=d1f30a2933dd97d66634431ed6d0524a
http://eprints.utp.edu.my/29915/
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spelling my.utp.eprints.299152022-03-25T03:14:43Z Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies Zulfiqar, M. Chowdhury, S. Samsudin, M.F.R. Siyal, A.A. Omar, A.A. Ahmad, T. Sufian, S. Alcohols or solvents have attained much attraction in scientific community to regulate the shape and surface characteristics of TiO2 for multiple applications. Herein, single-walled TiO2 nanotubes (SWTNTs) were synthesized via the simple hydrothermal method in presence of different organic solvents, namely 1-propanol and 2-propanol under alkaline environment. The physicochemical properties of the as-developed SWTNTs were scrutinized using XRD, TEM, FESEM, BET and DRS. The growth of SWTNTs via 1-propanol resulted in a remarkable enhancement in the performance up to 94.97 of Acid orange 7 (AO7) was degraded. The outstanding photodegradation performance observed was attributed to the better morphological structure and crystallinity, evidently from the structure and microscopic image analysis. The enhanced light absorption capacity towards the visible light region significantly improved the photodegradation performance of the as-developed SWTNTs. The photodegradation rate of AO7 on SWTNTs was well explained via the modified Langmuir-Hinshelwood kinetic model. Furthermore, adsorption kinetic and isotherm analysis revealed that as-developed SWTNTs obeyed the pseudo-first-order kinetics and Langmuir isotherms. Congruently, the values of thermodynamic parameters, and activation energy revealed that the adsorption of AO7 is endothermic, spontaneous and chemisorption in nature. The rise in temperature was found to be more feasible for increased removal of AO7. This enhanced degradation activities of solvent-controlled SWTNTs was strongly associated with the well-defined morphology, larger specific surface area as well as smallest band gap energy values. This research offered a new direction for the growth of catalysts with excellent and stable photodegradation and adsorption activities in the purification of organic wastewaters. © 2020 Elsevier Ltd Elsevier Ltd 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087495556&doi=10.1016%2fj.jwpe.2020.101491&partnerID=40&md5=d1f30a2933dd97d66634431ed6d0524a Zulfiqar, M. and Chowdhury, S. and Samsudin, M.F.R. and Siyal, A.A. and Omar, A.A. and Ahmad, T. and Sufian, S. (2020) Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies. Journal of Water Process Engineering, 37 . http://eprints.utp.edu.my/29915/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Alcohols or solvents have attained much attraction in scientific community to regulate the shape and surface characteristics of TiO2 for multiple applications. Herein, single-walled TiO2 nanotubes (SWTNTs) were synthesized via the simple hydrothermal method in presence of different organic solvents, namely 1-propanol and 2-propanol under alkaline environment. The physicochemical properties of the as-developed SWTNTs were scrutinized using XRD, TEM, FESEM, BET and DRS. The growth of SWTNTs via 1-propanol resulted in a remarkable enhancement in the performance up to 94.97 of Acid orange 7 (AO7) was degraded. The outstanding photodegradation performance observed was attributed to the better morphological structure and crystallinity, evidently from the structure and microscopic image analysis. The enhanced light absorption capacity towards the visible light region significantly improved the photodegradation performance of the as-developed SWTNTs. The photodegradation rate of AO7 on SWTNTs was well explained via the modified Langmuir-Hinshelwood kinetic model. Furthermore, adsorption kinetic and isotherm analysis revealed that as-developed SWTNTs obeyed the pseudo-first-order kinetics and Langmuir isotherms. Congruently, the values of thermodynamic parameters, and activation energy revealed that the adsorption of AO7 is endothermic, spontaneous and chemisorption in nature. The rise in temperature was found to be more feasible for increased removal of AO7. This enhanced degradation activities of solvent-controlled SWTNTs was strongly associated with the well-defined morphology, larger specific surface area as well as smallest band gap energy values. This research offered a new direction for the growth of catalysts with excellent and stable photodegradation and adsorption activities in the purification of organic wastewaters. © 2020 Elsevier Ltd
format Article
author Zulfiqar, M.
Chowdhury, S.
Samsudin, M.F.R.
Siyal, A.A.
Omar, A.A.
Ahmad, T.
Sufian, S.
spellingShingle Zulfiqar, M.
Chowdhury, S.
Samsudin, M.F.R.
Siyal, A.A.
Omar, A.A.
Ahmad, T.
Sufian, S.
Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies
author_facet Zulfiqar, M.
Chowdhury, S.
Samsudin, M.F.R.
Siyal, A.A.
Omar, A.A.
Ahmad, T.
Sufian, S.
author_sort Zulfiqar, M.
title Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies
title_short Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies
title_full Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies
title_fullStr Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies
title_full_unstemmed Effect of organic solvents on the growth of TiO2 nanotubes: An insight into photocatalytic degradation and adsorption studies
title_sort effect of organic solvents on the growth of tio2 nanotubes: an insight into photocatalytic degradation and adsorption studies
publisher Elsevier Ltd
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087495556&doi=10.1016%2fj.jwpe.2020.101491&partnerID=40&md5=d1f30a2933dd97d66634431ed6d0524a
http://eprints.utp.edu.my/29915/
_version_ 1738657033495773184
score 13.211869

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