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Issue
Korean Journal of Chemical Engineering,
Vol.37, No.9, 1507-1514, 2020
Modified blue TiO2 nanostructures for efficient photo-oxidative removal of harmful NOx gases
Nguyen HH, Gyawali G, Martinez-Oviedo A, Nguyen HP, Lee SW
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.
Keywords: Photocatalyst; Blue TiO2; Oxygen Vacancy; NOx Gas
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