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Facile synthesis of ring-like α-Fe2O3 assembly composed of small hematite particles for highly efficient photocatalysis

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Abstract

A new-type of ring-like α-Fe2O3 assembly were prepared via facile top-down etching method from hematite saucer-like nanocrystals composed of small α-Fe2O3 particles. HRTEM and BET results demonstrated that the ring-like α-Fe2O3 assembly has zigzag edge and high specific surface area, which leads to higher efficient visible-light photocatalytic performance on the degradation of cationic dye Rhodamine B (RhB). UV–Vis diffuse reflectance spectra and photocurrent responses demonstrated a narrow bandgap and higher photocurrent response of ring-like α-Fe2O3 assembly, which were helpful for absorbing photons and restraint of recombination for photogenerated charges. These characters make them the promising candidates for photocatalysis.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (Grant Nos. 51205276, 11602159, 61474079), China Postdoctoral Science Foundation (Grant No. 2013T60268), Science and Technology Major Project of the Shanxi Science and Technology Department (Grant No. 20121101004), Shanxi Province Science Foundation (Grant Nos. 2015021092, 2016011039), Scientific & Technologial Innovation Programs of Higher Education Institutions in Shanxi (Grant No. 2016136) and Graduate Student Education Innovation Project in Shanxi (Grant No. 2017SY021 and 2017BY049).

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Authors and Affiliations

  1. Micro-Nano System Research Center of College of Information Engineering and Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China

    Xiaole Yan, Yiduo Wu, Dingding Li, Cuixian Luo, Ying Wang, Jie Hu, Gang Li, Pengwei Li & Wendong Zhang

  2. Biomedical Optics Laboratory, Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA

    Huabei Jiang

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  1. Xiaole Yan
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  2. Yiduo Wu
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  7. Gang Li
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Correspondence to Pengwei Li.

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Yan, X., Wu, Y., Li, D. et al. Facile synthesis of ring-like α-Fe2O3 assembly composed of small hematite particles for highly efficient photocatalysis. J Mater Sci: Mater Electron 29, 2610–2617 (2018). https://doi.org/10.1007/s10854-017-8186-6

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  • DOI: https://doi.org/10.1007/s10854-017-8186-6

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