TY - JOUR
T1 - Shockwave impact on the stability of anatase titania nanoparticles
AU - Slama de Freitas, Ana Luiza
AU - Subburaj, Janardhanraj
AU - Navarro, Juan Carlos
AU - Khan, Hassnain Abbas
AU - Kashif, Touqeer Anwar
AU - Hakimov, Khaiyom
AU - Ruiz-Martinez, Javier
AU - Farooq, Aamir
N1 - Funding Information:
Research reported in this publication was funded by King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/8
Y1 - 2022/8
N2 - The stability of anatase titania nanoparticles was investigated under exposure to repeated loading of shockwaves produced in a diaphragm-driven high-pressure shock tube. The titania samples were exposed to 20 shocks with pressure, temperature, and steady exposure time in the range of 20.5 – 26 bar, 1399 – 2101 K, and 1.74 – 1.83 ms, respectively. The crystal structure and surface morphology were analyzed before and after the shockwave treatment using various characterization techniques. After repeated shock exposure, there was reduction in crystallite size by ~ 40%, modification in the surface charge, and an increase in the hydroxyl groups in titania. The onset of phase transformation from anatase to rutile was observed after 20 shocks. This work gives insights into the structural changes induced by shockwaves in anatase nanoparticles which can help improve their performance as a catalytic support in heterogeneous catalysis.
AB - The stability of anatase titania nanoparticles was investigated under exposure to repeated loading of shockwaves produced in a diaphragm-driven high-pressure shock tube. The titania samples were exposed to 20 shocks with pressure, temperature, and steady exposure time in the range of 20.5 – 26 bar, 1399 – 2101 K, and 1.74 – 1.83 ms, respectively. The crystal structure and surface morphology were analyzed before and after the shockwave treatment using various characterization techniques. After repeated shock exposure, there was reduction in crystallite size by ~ 40%, modification in the surface charge, and an increase in the hydroxyl groups in titania. The onset of phase transformation from anatase to rutile was observed after 20 shocks. This work gives insights into the structural changes induced by shockwaves in anatase nanoparticles which can help improve their performance as a catalytic support in heterogeneous catalysis.
KW - Anatase TiO
KW - Nanoparticles
KW - Shock tube
KW - Shockwaves
KW - Structural modification
UR - http://www.scopus.com/inward/record.url?scp=85134667928&partnerID=8YFLogxK
U2 - 10.1016/j.mtcomm.2022.104031
DO - 10.1016/j.mtcomm.2022.104031
M3 - Article
AN - SCOPUS:85134667928
SN - 2352-4928
VL - 32
JO - Materials Today Communications
JF - Materials Today Communications
M1 - 104031
ER -