Synthesis and Characterization of CexZr1-xO2 using Supercritical Water

Document Type : Original Research

Authors

1 Department of Chemical Engineering, Birjand University of Technology

2 Department of Materials Engineering, Birjand University of Technology, Birjand, Iran

Abstract
Research subject: Due to the public's attention on the environmental issues as well as strict environmental regulations, the eco-friendly methods for nanoparticles have received considerable attention in the recent years.

Research approach: In the present study, a mixed oxide nanoparticles containing cerium and zirconium (Cex-Zr1-xO2) was fabricated the in supercritical water (SCW) medium. The synthesized nanoparticles were characterized by various analyses, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM).

Main results: The results of the analyses demonstrated that fine nanoparticles with mean size of 13±3 nm, with high crystallinity, and with appropriate size distribution and surface area were synthesized by SCW. Moreover, an oxygen storage capacity (OSC) as high as 1.25 mmol O2/g was estimated for Cex-Zr1-xO2 nanoparticles through temperature programmed reduction in hydrogen (H2-TPR). According to the obtained results, the Cex-Zr1-xO2 nanoparticles could be a suitable candidate for catalysts of oxidation processes as well as three-way catalyst for control of automotive exhaust gases.

Keywords

Subjects


[1] Adschiri T., Hakuta Y., Sue K. and Arai K., Hydrothermal synthesis of metal oxide nanoparticles at supercritical conditions, Journal of Nanoparticle Research, 3, 227-235, 2001.
[2] Taguchi M., Takami S., Adschiri T., Nakane T., Sato, K. and Naka T., Synthesis of surface-modified monoclinic ZrO2 nanoparticles using supercritical water, CrystEngComm, 14(6), 2132-2138, 2012.
[3] Golmohammadi M., Towfighi J., Hosseinpour M. and Ahmadi S.J., An investigation into the formation and conversion of metal complexes to metal oxide nanoparticles in supercritical water, The Journal of Supercritical Fluids, 107, 699-706, 2016.
[4] Golmohammadi M., Ahmadi S.J. and Towfighi J., Catalytic cracking of heavy petroleum residue in supercritical water: Study on the effect of different metal oxide nanoparticles, The Journal of Supercritical Fluids, 113, 136-143, 2016.
[5] Adschiri T., Hakuta Y. and Arai K., Hydrothermal synthesis of metal oxide fine particles at supercritical conditions, Industrial & engineering chemistry research, 39, 12, 4901-4907, 2000.
[6] Kosari M., Golmohammadi M., Ahmadi S.J., Towfighi J. and Chenari A.H., On the catalysis capability of transition metal oxide nanoparticles in upgrading of heavy petroleum residue by supercritical water, The Journal of Supercritical Fluids, 126, 14-24, 2017.
[7] Duan H., Wang D. and Li Y., Green chemistry for nanoparticle synthesis, Chemical Society Reviews, 44(16), 5778-5792, 2015.
[8] Lane M.K.M. and Zimmerman J., Controlling metal oxide nanoparticle size and shape with supercritical fluid synthesis, Green Chemistry, 21, 3769-3781, 2019.
[9] Yoko A., Aida T., Aoki N., Hojo D., Koshimizu M., Ohara S., Seong G., Takami S., Togashi T. and Tomai T., Supercritical hydrothermal synthesis of nanoparticles’: ‘Nanoparticle technology handbook, Elsevier, 683-689, 2018.
[10] Ahmadi S.J., Hosseinpour M., Javadi F. and Tayebee R., Optimization study on formation and decomposition of zinc hydroxynitrates to pure zinc oxide nanoparticles in supercritical water, Industrial & Engineering Chemistry Research, 52(4), 1448-1454, 2013.
[11] Golmohammadi M., Ahmadi S.J. and Towfighi J., Catalytic supercritical water destructive oxidation of tributyl phosphate: Study on the effect of operational parameters, The Journal of Supercritical Fluids, 140, 32-40, 2018.
[12] Kosari M., Golmohammadi M., Towfighi J. and Ahmadi S.J., Decomposition of tributhyl phosphate at supercritical water oxidation conditions: Non-catalytic, catalytic, and kinetic reaction studies, The Journal of Supercritical Fluids, 133, 103-113, 2018.
[13] Outokesh M., Hosseinpour M., Ahmadi S.J., Mousavand T., Sadjadi S. and Soltanian W., Hydrothermal synthesis of CuO nanoparticles: study on effects of operational conditions on yield, purity, and size of the nanoparticles, Industrial & Engineering Chemistry Research, 50(6), 3540-3554, 2011.
[14] Hosseinpour M., Fatemi S. and Ahmadi S.J., Catalytic cracking of petroleum vacuum residue in supercritical water media: Impact of α-Fe2O3 in the form of free nanoparticles and silica-supported granules, Fuel, 159, 538-549, 2015.
[15] Masoodiyeh F., Karimi-Sabet J., Khanchi A. and Mozdianfard M., Zirconia nanoparticle synthesis in sub and supercritical water—particle morphology and chemical equilibria, Powder technology, 269, 461-469, 2015.
[16] Mozdianfard M., Masoodiyeh F. and Karimi-Sabet J., Supercritical water hydrothermal synthesis of Bi2O3 nanoparticles: Process optimization using response surface methodology based on population balance equation, The Journal of Supercritical Fluids, 136, 144-156, 2018.
[17] Rouhani Z., Karimi-Sabet J., Mehdipourghazi M., Hadi A. and Dastbaz A., Response surface optimization of hydrothermal synthesis of Bismuth ferrite nanoparticles under supercritical water conditions: Application for photocatalytic degradation of Tetracycline, Environmental Nanotechnology, Monitoring & Management, 11, 100198, 2019.
[18] Samiee-Zafarghandi R., Hadi A. and Karimi-Sabet J., Graphene-supported metal nanoparticles as novel catalysts for syngas production using supercritical water gasification of microalgae, Biomass and bioenergy, 121, 13-21, 2019.
[19] Sun C. and Xue D., Size-dependent oxygen storage ability of nano-sized ceria, Physical Chemistry Chemical Physics, 15(34), 14414-14419, 2013.
[20] Liu X., Zhou K., Wang L., Wang B. and Li Y., Oxygen vacancy clusters promoting reducibility and activity of ceria nanorods, Journal of the American Chemical Society, 131(9), 3140-3141, 2009.
[21] Kazerooni H., Rouhi A., Khodadadi A.A. and Mortazavi Y., Effects of Combustion Catalyst Dispersed by a Novel Microemulsion Method as Fuel Additive on Diesel Engine Emissions, Performance, and Characteristics, Energy & Fuels, 30(4), 3392-3402, 2016.
[22] Jianqiang W., Meiqing S., Jun W., Jidong G., Jie M. and Shuangxi L., Effect of cobalt doping on ceria-zirconia mixed oxide: Structural characteristics, oxygen storage/release capacity and three-way catalytic performance, Journal of Rare Earths, 30(9), 878-883, 2012.
[23] Honarmand M., Golmohammadi M., Naeimi A., Biosynthesis of tin oxide (SnO2) nanoparticles using jujube fruit for photocatalytic degradation of organic dyes, Advanced Powder Technology, 30(8), 1551-11557, 2019.
[24] Yan B. and Zhu H., Controlled synthesis of CeO 2 nanoparticles using novel amphiphilic cerium complex precursors, Journal of Nanoparticle Research, 10(8), 1279-1285, 2008.
[25] Prakashbabu D., Krishna R.H., Nagabhushana B., Nagabhushana H., Shivakumara C., Chakradar R., Ramalingam H., Sharma S. and Chandramohan R., Low temperature synthesis of pure cubic ZrO2 nanopowder: Structural and luminescence studies, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 122, 216-222, 2014.
[26] Donohue M. and Aranovich G., Classification of Gibbs adsorption isotherms, Advances in Colloid and Interface Science, 76, 137-152, 1998.