Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applications
Abstract
MTiO3 (M = Ca, Sr, Ba) nanoparticles were synthesized by a one-step room-temperature ultrasound synthesis in ionic liquid. The samples we gathered are characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption, UV–vis diffuse reflectance, Raman and IR spectroscopy and their capability in photocatalytic hydrogen evolution and methylene blue degradation was tested. Powder X-ray diffraction and Raman spectroscopic investigations revealed the products to crystallize in the cubic perovskite structure. SEM observations showed that the obtained CaTiO3 consists of nanospheres, BaTiO3 of raspberry-like shaped particles of 20 nm in diameter. SrTiO3 particles have cubic-like morphology with an edge length varying from 100 to 300 nm. SrTiO3 exhibited the highest catalytic activity for photocatalytic H2 evolution using only 0.025 wt.% Rh as co-catalyst and for the degradation of methylene blue under UV irradiation. The influence of parameters such as synthesis method, calcination temperature, and doping with nitrogen on the morphology, crystallinity, chemical composition, and photocatalytic acivity of SrTiO3 was studied. Heating the as-prepared SrTiO3 to 700 °C for extended time leads to a decrease in surface area and catalytic activity. Ionothermal prepared SrTiO3 exhibits a higher activity than sonochemically prepared one without co-catalyst due to a synergistic effect of anatase which ismore »
- Authors:
-
- Ruhr-Univ. of Bochum (Germany)
- Ruhr-Univ. of Bochum (Germany); Carl von Ossietzky Univ. of Oldenburg (Germany)
- Ruhr-Univ. of Bochum (Germany); Iowa State Univ., Ames, IA (United States)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1239831
- Alternate Identifier(s):
- OSTI ID: 1250269
- Report Number(s):
- IS-J 8749
Journal ID: ISSN 0926-3373; PII: S0926337314007115
- Grant/Contract Number:
- AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Catalysis. B, Environmental
- Additional Journal Information:
- Journal Volume: 178; Journal Issue: C; Journal ID: ISSN 0926-3373
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Alammar, Tarek, Hamm, Ines, Wark, Michael, and Mudring, Anja-Verena. Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applications. United States: N. p., 2014.
Web. doi:10.1016/j.apcatb.2014.11.010.
Alammar, Tarek, Hamm, Ines, Wark, Michael, & Mudring, Anja-Verena. Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applications. United States. https://doi.org/10.1016/j.apcatb.2014.11.010
Alammar, Tarek, Hamm, Ines, Wark, Michael, and Mudring, Anja-Verena. Thu .
"Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applications". United States. https://doi.org/10.1016/j.apcatb.2014.11.010. https://www.osti.gov/servlets/purl/1239831.
@article{osti_1239831,
title = {Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applications},
author = {Alammar, Tarek and Hamm, Ines and Wark, Michael and Mudring, Anja-Verena},
abstractNote = {MTiO3 (M = Ca, Sr, Ba) nanoparticles were synthesized by a one-step room-temperature ultrasound synthesis in ionic liquid. The samples we gathered are characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption, UV–vis diffuse reflectance, Raman and IR spectroscopy and their capability in photocatalytic hydrogen evolution and methylene blue degradation was tested. Powder X-ray diffraction and Raman spectroscopic investigations revealed the products to crystallize in the cubic perovskite structure. SEM observations showed that the obtained CaTiO3 consists of nanospheres, BaTiO3 of raspberry-like shaped particles of 20 nm in diameter. SrTiO3 particles have cubic-like morphology with an edge length varying from 100 to 300 nm. SrTiO3 exhibited the highest catalytic activity for photocatalytic H2 evolution using only 0.025 wt.% Rh as co-catalyst and for the degradation of methylene blue under UV irradiation. The influence of parameters such as synthesis method, calcination temperature, and doping with nitrogen on the morphology, crystallinity, chemical composition, and photocatalytic acivity of SrTiO3 was studied. Heating the as-prepared SrTiO3 to 700 °C for extended time leads to a decrease in surface area and catalytic activity. Ionothermal prepared SrTiO3 exhibits a higher activity than sonochemically prepared one without co-catalyst due to a synergistic effect of anatase which is present in small amount as a by-phase. Furthermore, after photodeposition of Rh, however, the activity is lower than that of the sonochemically prepared SrTiO3. Nitrogen-doped SrTiO3 showed photocatalytic acivity under visible light irradiation.},
doi = {10.1016/j.apcatb.2014.11.010},
journal = {Applied Catalysis. B, Environmental},
number = C,
volume = 178,
place = {United States},
year = {Thu Nov 13 00:00:00 EST 2014},
month = {Thu Nov 13 00:00:00 EST 2014}
}
Web of Science
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