10.1007/s40089-017-0213-3

Synthesis of CeO2-based core/shell nanoparticles with high oxygen storage capacity

HTML PDF
  • Aytekin Uzunoglu*1,
  • Dursun Ali Kose2,
  • Lia A. Stanciu3,
  1. School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, US Alaca Avni Celik Vocational School, Hitit University, Alaca, Corum, 19600, TR
  2. Department of Chemistry, Faculty of Science and Arts, Hitit University, Corum, 19030, TR
  3. School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, US Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, US
Cover Image

Published in Issue 2017-07-17

How to Cite

Uzunoglu, A., Kose, D. A., & Stanciu, L. A. (2017). Synthesis of CeO2-based core/shell nanoparticles with high oxygen storage capacity. International Nano Letters, 7(3 (September 2017). https://doi.org/10.1007/s40089-017-0213-3
Crossref
Scopus
Google Scholar
Europe PMC

HTML views: 92

PDF views: 113

Abstract

Abstract Ceria plays a key role in various applications including sensing and catalysis owing to its high oxygen storage capacity (OSC). The aim of this work is to prepare novel MO x /CeO 2 (M: Zr, Ti, Cu) metal oxide systems with core/shell structures using a facile two-step chemical precipitation method. The synthesized nanoparticles were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), and N 2 adsorption methods. The OSC property of the samples was evaluated using TGA analysis conducted at 600 °C under reductive (5% H 2 /Ar) and oxidative (synthetic air) environments. The OSCs of the samples were found to be 130, 253, and 2098 µmol-O 2 /g for ZrO 2 /CeO 2 , TiO 2 /CeO 2 , and CuO/CeO 2 , respectively. Effects of heat treatment on the physical and redox properties of the samples were also evaluated. In this regard, the samples were exposed to 500 °C for 5 h under ambient environment. It was observed that the heat treatment induced the formation of mixed metal oxide alloys and the BET surface area of the samples diminished significantly. The OSC of the samples, however, did not experience any significant chance, which was attributed to the compensation of the loss in the surface area by the alloy formation after the heat treatment.

Keywords

  • CeO2,
  • Core/shell,
  • Oxygen storage capacity,
  • Nanoparticles,
  • ZrO2,
  • TiO2,
  • CuO
HTML PDF

References

  1. Uzunoglu and Stanciu (2016) Novel CeO2–CuO-decorated enzymatic lactate biosensors operating in low oxygen environments (pp. 121-128) https://doi.org/10.1016/j.aca.2015.12.044
  2. Dong et al. (2012) Ce0.5Zr0.4Sn0.1O2/Al2O3 catalysts with enhanced oxygen storage capacity and high CO oxidation activity (pp. 2521-2524) https://doi.org/10.1039/c2cy20425h
  3. Benjaram et al. (2011) Nanosized unsupported and alumina-supported ceria–zirconia and ceria–terbia solid solutions for CO oxidation (pp. 800-806) https://doi.org/10.1016/S1872-2067(10)60227-6
  4. Fu et al. (2001) Nanostructured Au–CeO2 catalysts for low-temperature water-gas shift (pp. 87-95) https://doi.org/10.1023/A:1012666128812
  5. Uzunoglu et al. (2016) Layer by layer construction of ascorbate interference-free amperometric lactate biosensors with lactate oxidase, ascorbate oxidase, and ceria nanoparticles (pp. 1667-1675) https://doi.org/10.1007/s00604-016-1796-5
  6. Trovarelli et al. (2001) Some recent developments in the characterization of ceria-based catalysts (pp. 584-591) https://doi.org/10.1016/S0925-8388(01)01181-1
  7. Uzunoglu et al. (2015) CeO2–MOx (M: Zr, Ti, Cu) mixed metal oxides with enhanced oxygen storage capacity (pp. 3750-3762) https://doi.org/10.1007/s10853-015-8939-7
  8. Sugiura (2003) Oxygen storage materials for automotive catalysts: ceria–zirconia solid solutions (pp. 77-87) https://doi.org/10.1023/A:1023488709527
  9. Tschope and Ying (1994) Nanocrystalline cerium oxide catalytic materials (pp. 781-784) https://doi.org/10.1007/978-94-011-1076-1_81
  10. Wu et al. (2007) Role of surface adsorption in fast oxygen storage/release of CeO2–ZrO2 mixed oxides (pp. 416-421) https://doi.org/10.1016/S1002-0721(07)60448-7
  11. Kim et al. (2007) Characteristics in oxygen storage capacity of ceria-zirconia mixed oxides prepared by continuous hydrothermal synthesis in supercritical water (pp. 57-63) https://doi.org/10.1016/j.apcatb.2006.08.015
  12. Ran et al. (2012) Microstructure and oxygen storage capacity of Sr-modified Pt/CeO2–ZrO2 catalysts (pp. 7-14) https://doi.org/10.1016/j.pnsc.2011.12.002
  13. Zhou et al. (2013) Effects of the structure of Ce–Cu catalysts on the catalytic combustion of toluene in air (pp. 3677-3683) https://doi.org/10.1016/j.ceramint.2012.10.199
  14. Zhou et al. (2007) Oxidation enthalpies for reduction of ceria surfaces (pp. 2512-2519) https://doi.org/10.1016/j.susc.2007.04.238
  15. Abdollahzadeh-Ghom et al. (2011) Improvement of oxygen storage capacity using mesoporous ceria–zirconia solid solutions (pp. 32-38) https://doi.org/10.1016/j.apcatb.2011.07.038
  16. Schmieg and Belton (1995) Effect of hydrothermal aging on oxygen storage release and activity in a commercial automotive catalyst (pp. 127-144) https://doi.org/10.1016/0926-3373(95)00011-9
  17. Epifani et al. (2012) Synthesis of ceria–zirconia nanocrystals with improved microstructural homogeneity and oxygen storage capacity by hydrolytic sol–gel process in coordinating environment (pp. 2867-2875) https://doi.org/10.1002/adfm.201200380
  18. Kanmani and Ramachandran (2012) Synthesis and characterization of TiO2/ZnO core/shell nanomaterials for solar cell applications (pp. 149-156) https://doi.org/10.1016/j.renene.2011.12.014
  19. Yang et al. (2016) Redox enzyme-mimicking activities of CeO2 nanostructures: Intrinsic influence of exposed facets https://doi.org/10.1038/srep35344
  20. Basahel et al. (2015) Influence of crystal structure of nanosized ZrO2 on photocatalytic degradation of methyl orange https://doi.org/10.1186/s11671-015-0780-z
  21. Chu, L., Li, L.Y., Su, J., Tu, F.F., Liu, N.S., Gao, Y.H.: A general method for preparing anatase TiO
  22. 2
  23. treelike-nanoarrays on various metal wires for fiber dye-sensitized solar cells. Sci. Rep.
  24. 4
  25. (2014)
  26. Cheng and Chen (2012) Fabrication, characterization, and kinetic study of vertical single-crystalline CuO nanowires on Si substrates https://doi.org/10.1186/1556-276X-7-119
  27. Ouyang and Yang (2009) Investigation of the oxygen exchange property and oxygen storage capacity of CexZr1−xO2 nanocrystals (pp. 6921-6928) https://doi.org/10.1021/jp808075t
  28. Chuang et al. (2009) Synthesis and characterization of Al2O3-Ce0.5Zr0.5O2 powders prepared by chemical coprecipitation method (pp. 387-392) https://doi.org/10.1016/j.jallcom.2008.02.078