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Defective titanium dioxide single crystals exposed by high-energy {001} facets for efficient oxygen reduction

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  • Dan-Ni Pei

    (CAS Key Laboratory of Urban Pollutants Conversion, University of Science and Technology of China)

  • Li Gong

    (CAS Key Laboratory of Urban Pollutants Conversion, University of Science and Technology of China)

  • Ai-Yong Zhang

    (CAS Key Laboratory of Urban Pollutants Conversion, University of Science and Technology of China
    Hefei University of Technology)

  • Xing Zhang

    (CAS Key Laboratory of Urban Pollutants Conversion, University of Science and Technology of China)

  • Jie-Jie Chen

    (CAS Key Laboratory of Urban Pollutants Conversion, University of Science and Technology of China)

  • Yang Mu

    (CAS Key Laboratory of Urban Pollutants Conversion, University of Science and Technology of China)

  • Han-Qing Yu

    (CAS Key Laboratory of Urban Pollutants Conversion, University of Science and Technology of China)

Abstract

The cathodic material plays an essential role in oxygen reduction reaction for energy conversion and storage systems. Titanium dioxide, as a semiconductor material, is usually not recognized as an efficient oxygen reduction electrocatalyst owning to its low conductivity and poor reactivity. Here we demonstrate that nano-structured titanium dioxide, self-doped by oxygen vacancies and selectively exposed with the high-energy {001} facets, exhibits a surprisingly competitive oxygen reduction activity, excellent durability and superior tolerance to methanol. Combining the electrochemical tests with density-functional calculations, we elucidate the defect-centred oxygen reduction reaction mechanism for the superiority of the reductive {001}-TiO2−x nanocrystals. Our findings may provide an opportunity to develop a simple, efficient, cost-effective and promising catalyst for oxygen reduction reaction in energy conversion and storage technologies.

Suggested Citation

  • Dan-Ni Pei & Li Gong & Ai-Yong Zhang & Xing Zhang & Jie-Jie Chen & Yang Mu & Han-Qing Yu, 2015. "Defective titanium dioxide single crystals exposed by high-energy {001} facets for efficient oxygen reduction," Nature Communications, Nature, vol. 6(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9696
    DOI: 10.1038/ncomms9696
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    Cited by:

    1. Che Lah, Nurul Akmal, 2021. "Late transition metal nanocomplexes: Applications for renewable energy conversion and storage," Renewable and Sustainable Energy Reviews, Elsevier, vol. 145(C).
    2. Zabed, Hossain M. & Islam, Jahidul & Chowdhury, Faisal I. & Zhao, Mei & Awasthi, Mukesh Kumar & Nizami, Abdul-Sattar & Uddin, Jamal & Thomas, Sabu & Qi, Xianghui, 2022. "Recent insights into heterometal-doped copper oxide nanostructure-based catalysts for renewable energy conversion and generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).

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