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A nanocomposite superstructure of metal oxides with effective charge transfer interfaces

Author

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  • Zhenfeng Bian

    (The Institute of Scientific and Industrial Research (SANKEN), Osaka University
    Present address: Department of Chemistry, Shanghai Normal University, Shanghai 200234, People's Republic of China)

  • Takashi Tachikawa

    (The Institute of Scientific and Industrial Research (SANKEN), Osaka University
    PRESTO, Japan Science and Technology Agency (JST))

  • Peng Zhang

    (The Institute of Scientific and Industrial Research (SANKEN), Osaka University)

  • Mamoru Fujitsuka

    (The Institute of Scientific and Industrial Research (SANKEN), Osaka University)

  • Tetsuro Majima

    (The Institute of Scientific and Industrial Research (SANKEN), Osaka University)

Abstract

The alignment of nanoparticle building blocks into ordered superstructures is one of the key topics in modern colloid and material chemistry. Metal oxide mesocrystals are superstructures of assembled nanoparticles of metal oxides and have potentially tunable electronic, optical and magnetic properties, which would be useful for applications ranging from catalysis to optoelectronics. Here we report a facile and general approach for synthesizing metal oxide mesocrystals and developing them into new nanocomposite materials containing two different metals. The surface and internal structures of the mesocrystals were fully characterized by electron microscopy techniques. Single-particle confocal fluorescence spectroscopy, electron paramagnetic resonance spectroscopy and time-resolved diffuse reflectance spectroscopy measurements revealed that efficient charge transfer occurred between n-type and p-type semiconductor nanoparticles in the composite mesocrystals. This behaviour is desirable for their applications ranging from catalysis, optoelectronics and sensing, to energy storage and conversion.

Suggested Citation

  • Zhenfeng Bian & Takashi Tachikawa & Peng Zhang & Mamoru Fujitsuka & Tetsuro Majima, 2014. "A nanocomposite superstructure of metal oxides with effective charge transfer interfaces," Nature Communications, Nature, vol. 5(1), pages 1-9, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4038
    DOI: 10.1038/ncomms4038
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    Cited by:

    1. Zhujun Zhang & Takashi Tsuchimochi & Toshiaki Ina & Yoshitaka Kumabe & Shunsuke Muto & Koji Ohara & Hiroki Yamada & Seiichiro L. Ten-no & Takashi Tachikawa, 2022. "Binary dopant segregation enables hematite-based heterostructures for highly efficient solar H2O2 synthesis," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Zhishun Wei & Tharishinny Raja Mogan & Kunlei Wang & Marcin Janczarek & Ewa Kowalska, 2021. "Morphology-Governed Performance of Multi-Dimensional Photocatalysts for Hydrogen Generation," Energies, MDPI, vol. 14(21), pages 1-37, November.

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