Phase evolution and photoluminescence enhancement of CePO4 nanowires from a low phosphate concentration system

Abstract

Uniform CePO4 nanowires have been successfully synthesized in a low phosphate concentration system through a single-step hydrothermal process. The low phosphate concentration might decrease the surface PO4 3− adsorption of the as-synthesized CePO4 nanowires efficiently and benefit their photoluminescence. The CePO4 nanowires were identified to go through phase evolution from pure monoclinic to mixed hexagonal and monoclinic phase by only increasing the initial molar ratio of cerium and phosphate source (denoted as Ce/P). Interestingly, the strongest photoluminescence was observed in the CePO4 nanowires synthesized with the initial Ce/P of 4:1, which proved to be the critical phase evolution point between the hexagonal and monoclinic CePO4. Therefore, the strong photoluminescence could be explained by the existence of the structure-sensitive energy level in the CePO4. This kind of photoluminescence enhancement would be a meaningful reference for design of other photoluminescent materials, in which the photoluminescent emission might be related to the structure-sensitive energy level. Additionally, the growth processes of CePO4 nanowires based on related well-designed experiments were proposed.

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References

  1. Bao J, Yu R, Zhang J, Yang X, Wang D, Deng J, Chen J, Xing X (2009a) Controlled synthesis of terbium orthophosphate spindle-like hierarchical nanostructures with improved photoluminescence. Eur J Inorg Chem 16:2388–2392

    Article  Google Scholar 

  2. Bao J, Yu R, Zhang J, Yang X, Wang D, Deng J, Chen J, Xing X (2009b) Low-temperature hydrothermal synthesis and structure control of nano-sized CePO4. CrystEngComm 11(8):1630–1634

    Article  CAS  Google Scholar 

  3. Bu W, Hua Z, Chen H, Zhang L, Shi J (2004) Hydrothermal synthesis of ultraviolet-emitting cerium phosphate single-crystal nanowires. Chem Lett 33(5):612–613

    Google Scholar 

  4. Bu W, Hua Z, Chen H, Shi J (2005) Epitaxial synthesis of uniform cerium phosphate one-dimensional nanocable heterostructures with improved luminescence. J Phys Chem B 109(30):14461–14464

    Article  CAS  Google Scholar 

  5. Bühler G, Feldmann C (2006) Microwave-assisted synthesis of luminescent LaPO4:Ce, Tb nanocrystals in ionic liquids. Angew Chem Int Ed 45(29):4864–4867

    Article  Google Scholar 

  6. Buissette V, Moreau M, Gacoin T, Boilot JP (2006) Luminescent core/shell nanoparticles with a rhabdophane LnPO4–xH2O structure: stabilization of Ce3+-doped compositions. Adv Funct Mater 16(3):351–355

    Article  CAS  Google Scholar 

  7. Fang Y, Xu A, Song R, Zhang H, You L, Yu J, Liu H (2003) Systematic synthesis and characterization of single-crystal lanthanide orthophosphate nanowires. J Am Chem Soc 125(51):16025–16034

    Google Scholar 

  8. Feldmann C, Jüstel T, Ronda CR, Schmidt PJ (2003) Inorganic luminescent materials: 100 years of research and application. Adv Funct Mater 13(7):511–516

    Article  CAS  Google Scholar 

  9. Fen Z, Stanislaus SW (2010) Ambient large-scale template—bioimaging. ACS Nano 4(1):99–112

    Article  Google Scholar 

  10. Heer S, Lehmann O, Haase M, Güdel H-U (2003) Blue, green, and red upconversion emission from lanthanide-doped LuPO4 and YbPO4 nanocrystals in a transparent colloidal solution. Angew Chem Int Ed 42(27):3179–3182

    Article  CAS  Google Scholar 

  11. Kitsuda M, Fujihara S (2011) Quantitative luminescence switching in CePO4:Tb by redox reactions. J Phys Chem C 115(17):8808–8815

    Article  CAS  Google Scholar 

  12. Li Q, Yam VW-W (2007) Redox luminescence switch based on energy transfer in CePO4:Tb3+ nanowires. Angew Chem Int Ed 46(19):3486–3489

    Article  CAS  Google Scholar 

  13. Maas H, Currao A, Calzaferri G (2002) Encapsulated lanthanides as luminescent materials. Angew Chem Int Ed 41(14):2495–2497

    Article  CAS  Google Scholar 

  14. Meiser F, Cortez C, Caruso F (2004) Biofunctionalization of fluorescent rare-earth-doped lanthanum phosphate colloidal nanoparticles. Angew Chem Int Ed 43(44):5954–5957

    Article  CAS  Google Scholar 

  15. Riwotzki K, Meyssamy H, Schnablegger H, Kornowski A, Haase M (2001) Liquid-phase synthesis of colloids and redispersible powders of strongly luminescing LaPO4:Ce Tb nanocrystals. Angew Chem Int Ed 40(3):573–576

    Article  CAS  Google Scholar 

  16. Tang C, Bando Y, Golberg D, Ma R (2005) Cerium phosphate nanotubes: synthesis, valence state, and optical properties. Angew Chem Int Ed 44(4):576–579

    Article  CAS  Google Scholar 

  17. Xi G, Xiong K, Zhao Q, Zhang R, Zhang H, Qian Y (2006) Nucleation–dissolution–recrystallization: a new growth mechanism for t-selenium nanotubes. Cryst Growth Des 6(2):577–582

    Article  CAS  Google Scholar 

  18. Yan L, Yu R, Chen J, Xing X (2008) Template-free hydrothermal synthesis of CeO2 nano-octahedrons and nanorods: investigation of the morphology evolution. Cryst Growth Des 8(5):1474–1477

    Article  CAS  Google Scholar 

  19. Yu R, Yan L, Zheng P, Chen J, Xing X (2008) Controlled synthesis of CeO2 flower-like and well-aligned nanorod hierarchical architectures by a phosphate-assisted hydrothermal route. J Phys Chem C 112(50):19896–19900

    Article  CAS  Google Scholar 

  20. Zhang Y, Guan H (2003) Hydrothermal synthesis and characterization of hexagonal and monoclinic CePO4 single-crystal nanowires. J Cryst Growth 256(1–2):156–161

    CAS  Google Scholar 

Download references

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (No. 51072020, 21271021, and 21031005), and Beijing Natural Science Foundation (No. 2092019).

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Correspondence to Ranbo Yu.

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Xu, P., Yu, R., Zong, L. et al. Phase evolution and photoluminescence enhancement of CePO4 nanowires from a low phosphate concentration system. J Nanopart Res 15, 1622 (2013). https://doi.org/10.1007/s11051-013-1622-5

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Keywords

  • Uniform CePO4 nanowires
  • Lower phosphate concentration
  • Phase evolution
  • Enhanced photoluminescence