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Modified blue TiO2 nanostructures for efficient photo-oxidative removal of harmful NOx gases

  • Environmental Engineering
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Abstract

Blue TiO2 nanostructures were produced via Lithium/ethylenediamine (Li/EDA) reduction method and applied for photo-oxidative removal of harmful NOx gases under simulated solar light irradiation. Blue TiO2 possesses some unique physicochemical properties such as enhanced visible-light absorption, superficial defects or oxygen vacancies, and the evolution of Ti3+ species. Moreover, the photoluminescence spectra (PL) revealed the efficient separation of photoinduced electron-hole pairs in the modified blue TiO2 nanostructures, enhancing their photocatalytic activities. The results indicated that the blue TiO2 nanostructures exhibited the highest performance towards photo-oxidation of NOx gases, with an efficiency of 72.6% under simulated solar light irradiation.

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Acknowledgements

This research was supported by the Global Research Laboratory Program (Grant Number: 2010-00339) of the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (MEST) of Korea.

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Authors and Affiliations

  1. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam

    Hao Huy Nguyen

  2. Department of Fusion Science and Technology, Sun Moon University, Asan, 31460, Korea

    Gobinda Gyawali

  3. Department of Environmental and Bio-chemical Engineering, Sun Moon University, Asan, 31460, Korea

    Adriana Martinez-Oviedo & Soo Wohn Lee

  4. Research Center for Eco-Multifunctional Nano Materials, Sun Moon University, Asan, 31460, Korea

    Hoang Phuc Nguyen

Authors
  1. Hao Huy Nguyen
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  2. Gobinda Gyawali
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  3. Adriana Martinez-Oviedo
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  4. Hoang Phuc Nguyen
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  5. Soo Wohn Lee
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Corresponding authors

Correspondence to Gobinda Gyawali or Soo Wohn Lee.

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Nguyen, H.H., Gyawali, G., Martinez-Oviedo, A. et al. Modified blue TiO2 nanostructures for efficient photo-oxidative removal of harmful NOx gases. Korean J. Chem. Eng. 37, 1507–1514 (2020). https://doi.org/10.1007/s11814-020-0560-z

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  • DOI: https://doi.org/10.1007/s11814-020-0560-z

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