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Characterization, X-ray Absorption Spectroscopic Analysis and Photocatalytic Activity of Co/Zn Co-Doped TiO2 Nanoparticles Synthesized by One-Step Sonochemical Process

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College of Materials Innovation and Technology, King Mongkut’s Institute of Technology, Ladkrabang, Bangkok 10520, Thailand
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Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology, Thanyaburi, Pathum Thani 12110, Thailand
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Department of Physics, Sri Venkateswara University, Tirupati 517502, India
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Department of Physics, School of Science, GITAM Deemed to Be University, Hyderabad 502329, India
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Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, Pathum Thani 12110, Thailand
*
Author to whom correspondence should be addressed.
Academic Editors: Damir Valiev, Jakrapong Kaewkhao, Alessandro Chiasera and Tao Han
Crystals 2021, 11(10), 1254; https://doi.org/10.3390/cryst11101254
Received: 14 July 2021 / Revised: 6 October 2021 / Accepted: 8 October 2021 / Published: 15 October 2021
A novel one-step preparation of sonochemical method was applied to synthesize Co/Zn co-doped TiO2 nanoparticles using a sonicator of 750 W, 20 kHz for 30 min at room temperature. The formation of the anatase TiO2 phase for all as-prepared samples was observed from XRD results with a crystalline size in nanoscale. The use of ultrasound allowed for the successful doping of both Co and Zn into the TiO2 lattice, which was confirmed by Synchrotron light including X-ray near edge structure (XANES) and Extended X-ray absorption fine structure (EXAFS) spectroscopy. Ti K-edge, Co K-edge, and Zn K-edge XANES spectra exhibited the dominating +4, +2, and +2 valence state of Ti, Co, and Zn in as-prepared samples, respectively. A detailed XANES and EXAFS data analysis give strong evidence that the Co/Zn dopants partially replace the Ti atom of the TiO2 host. The Co/Zn co-doping extends the light absorption of the host to the visible region and restricts the e+/h+ recombination. The photocatalytic activity of samples was tested for degradation of Rhodamine B dye solution under visible light irradiation. The as-synthesized of the co-doped catalyst was presented as highly efficient, with 2.5 and 5 times dye degradation compared with single-doped and bare TiO2. View Full-Text
Keywords: Co/Zn co-doped TiO2; XANES; EXAFS; photocatalyst; sonochemical method Co/Zn co-doped TiO2; XANES; EXAFS; photocatalyst; sonochemical method
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MDPI and ACS Style

Mekprasart, W.; Pavasupree, S.; Jayasankar, C.K.; Ravuri, B.R.; Wattanawikkam, C.; Pecharapa, W. Characterization, X-ray Absorption Spectroscopic Analysis and Photocatalytic Activity of Co/Zn Co-Doped TiO2 Nanoparticles Synthesized by One-Step Sonochemical Process. Crystals 2021, 11, 1254. https://doi.org/10.3390/cryst11101254

AMA Style

Mekprasart W, Pavasupree S, Jayasankar CK, Ravuri BR, Wattanawikkam C, Pecharapa W. Characterization, X-ray Absorption Spectroscopic Analysis and Photocatalytic Activity of Co/Zn Co-Doped TiO2 Nanoparticles Synthesized by One-Step Sonochemical Process. Crystals. 2021; 11(10):1254. https://doi.org/10.3390/cryst11101254

Chicago/Turabian Style

Mekprasart, Wanichaya, Sorapong Pavasupree, C. K. Jayasankar, Balaji R. Ravuri, Chakkaphan Wattanawikkam, and Wisanu Pecharapa. 2021. "Characterization, X-ray Absorption Spectroscopic Analysis and Photocatalytic Activity of Co/Zn Co-Doped TiO2 Nanoparticles Synthesized by One-Step Sonochemical Process" Crystals 11, no. 10: 1254. https://doi.org/10.3390/cryst11101254

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