Impact of calcination of hydrothermally synthesized TiO2 nanowires on their photocatalytic efficiency

L. A. Al-Hajji; Adel A. Ismail; A. Al-Hazza; S. A. Ahmed; M. Alsaidi; F. Almutawa; A. Bumajdad

doi:10.1016/j.molstruc.2019.127153

Impact of calcination of hydrothermally synthesized TiO₂ nanowires on their photocatalytic efficiency

L. A. Al-Hajji, Adel A. Ismail, A. Al-Hazza, S. A. Ahmed, M. Alsaidi, F. Almutawa, A. Bumajdad

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

The phase transformations of hydrothermally prepared H₂Ti₃O₇ nanowires (NWs) upon calcination at different temperatures were addressed to interpret the impact of H₂Ti₃O₇ NWs crystallization on their photocatalytic performance for resorcinol photodegradation under UV illumination. Bicrystalline brookite/anatase NWs were obtained by calcination at 800 °C, which indicated a superior photocatalyst compared with rutile/brookite NWs or TiO₂(B)/anatase NWs as well as commercial P-25 photocatalysts. The brookite/anatase NWs photocatalyst exhibited high photocatalytic efficiency up to 99% owing to its long charge transfer channels and high resorcinol adsorption capacity, while the commercial P-25 photocatalyst is 72% within 3 h. The rate constant k (min⁻¹) value of brookite/anatase heterostructure NWs is greater than that of TiO₂(B)/anatase NWs and commercial P-25 for 5.6 and 2 times, respectively.

Original language	English
Article number	127153
Journal	Journal of Molecular Structure
Volume	1200
DOIs	https://doi.org/10.1016/j.molstruc.2019.127153
State	Published - 15 Jan 2020

Keywords

Endocrine
Phase transformations
Photocatalytic efficiency
Photodegradation
TiO NW

Funding Agency

Kuwait Foundation for the Advancement of Sciences

Access to Document

10.1016/j.molstruc.2019.127153

Cite this

@article{4ab1e88ed13e4950ae950ef6064953b6,

title = "Impact of calcination of hydrothermally synthesized TiO2 nanowires on their photocatalytic efficiency",

abstract = "The phase transformations of hydrothermally prepared H2Ti3O7 nanowires (NWs) upon calcination at different temperatures were addressed to interpret the impact of H2Ti3O7 NWs crystallization on their photocatalytic performance for resorcinol photodegradation under UV illumination. Bicrystalline brookite/anatase NWs were obtained by calcination at 800 °C, which indicated a superior photocatalyst compared with rutile/brookite NWs or TiO2(B)/anatase NWs as well as commercial P-25 photocatalysts. The brookite/anatase NWs photocatalyst exhibited high photocatalytic efficiency up to 99% owing to its long charge transfer channels and high resorcinol adsorption capacity, while the commercial P-25 photocatalyst is 72% within 3 h. The rate constant k (min−1) value of brookite/anatase heterostructure NWs is greater than that of TiO2(B)/anatase NWs and commercial P-25 for 5.6 and 2 times, respectively.",

keywords = "Endocrine, Phase transformations, Photocatalytic efficiency, Photodegradation, TiO NW",

author = "Al-Hajji, {L. A.} and Ismail, {Adel A.} and A. Al-Hazza and Ahmed, {S. A.} and M. Alsaidi and F. Almutawa and A. Bumajdad",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = jan,

day = "15",

doi = "10.1016/j.molstruc.2019.127153",

language = "English",

volume = "1200",

journal = "Journal of Molecular Structure",

issn = "0022-2860",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Impact of calcination of hydrothermally synthesized TiO2 nanowires on their photocatalytic efficiency

AU - Al-Hajji, L. A.

AU - Ismail, Adel A.

AU - Al-Hazza, A.

AU - Ahmed, S. A.

AU - Alsaidi, M.

AU - Almutawa, F.

AU - Bumajdad, A.

PY - 2020/1/15

Y1 - 2020/1/15

N2 - The phase transformations of hydrothermally prepared H2Ti3O7 nanowires (NWs) upon calcination at different temperatures were addressed to interpret the impact of H2Ti3O7 NWs crystallization on their photocatalytic performance for resorcinol photodegradation under UV illumination. Bicrystalline brookite/anatase NWs were obtained by calcination at 800 °C, which indicated a superior photocatalyst compared with rutile/brookite NWs or TiO2(B)/anatase NWs as well as commercial P-25 photocatalysts. The brookite/anatase NWs photocatalyst exhibited high photocatalytic efficiency up to 99% owing to its long charge transfer channels and high resorcinol adsorption capacity, while the commercial P-25 photocatalyst is 72% within 3 h. The rate constant k (min−1) value of brookite/anatase heterostructure NWs is greater than that of TiO2(B)/anatase NWs and commercial P-25 for 5.6 and 2 times, respectively.

AB - The phase transformations of hydrothermally prepared H2Ti3O7 nanowires (NWs) upon calcination at different temperatures were addressed to interpret the impact of H2Ti3O7 NWs crystallization on their photocatalytic performance for resorcinol photodegradation under UV illumination. Bicrystalline brookite/anatase NWs were obtained by calcination at 800 °C, which indicated a superior photocatalyst compared with rutile/brookite NWs or TiO2(B)/anatase NWs as well as commercial P-25 photocatalysts. The brookite/anatase NWs photocatalyst exhibited high photocatalytic efficiency up to 99% owing to its long charge transfer channels and high resorcinol adsorption capacity, while the commercial P-25 photocatalyst is 72% within 3 h. The rate constant k (min−1) value of brookite/anatase heterostructure NWs is greater than that of TiO2(B)/anatase NWs and commercial P-25 for 5.6 and 2 times, respectively.

KW - Endocrine

KW - Phase transformations

KW - Photocatalytic efficiency

KW - Photodegradation

KW - TiO NW

UR - http://www.scopus.com/inward/record.url?scp=85072808660&partnerID=8YFLogxK

U2 - 10.1016/j.molstruc.2019.127153

DO - 10.1016/j.molstruc.2019.127153

M3 - Article

AN - SCOPUS:85072808660

SN - 0022-2860

VL - 1200

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

M1 - 127153

ER -