Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2
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2022
Authors
Tasic, NikolaCirković, Jovana
Ribic, Vesna
Zunic, Milan
Dapčević, Aleksandra
Brankovic, Goran
Branković, Zorica
Article (Published version)
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We present the synthesis and photocatalytic properties of mixed-phase TiO2 nanoparticles decorated with silver nanodots obtained by environmental-friendly wet chemical method using low molecular weight chitosan as the silver reducing agent. Structural analysis of synthesized Ag nanoparticles revealed that they crystallized in a rare hexagonal modification. High-resolution transmission electron microscopy study shows that lt 3-nm hexagonal-Ag nanoparticles are implanted on the surface of lt 20-nm anatase grains. Compared to Ag-free TiO2 powders, implantation with Ag results in important increase in visible light absorption. The photocatalytic activity of the samples was measured by monitoring decolorization of concentrated textile dye solution (50 mg L-1 of Reactive Orange 16) under simulated solar irradiation of 280 W m(-2). The optimum photocatalytic properties are achieved with 5 wt% of silver. Based on the collected results, the operating mechanism of the degradation process is ...suggested, and the effects of the silver addition are explained.
Keywords:
chitosan / nanodots / Reactive Orange 16 / silver / TiO2 photocatalysisSource:
Journal of the American Ceramic Society, 2022, 105, 1, 336-347Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200053 (University of Belgrade, Institute for Multidisciplinary Research) (RS-200053)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
DOI: 10.1111/jace.18059
ISSN: 0002-7820
WoS: 000683420700001
Scopus: 2-s2.0-85112032236
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Tasic, Nikola AU - Cirković, Jovana AU - Ribic, Vesna AU - Zunic, Milan AU - Dapčević, Aleksandra AU - Brankovic, Goran AU - Branković, Zorica PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4999 AB - We present the synthesis and photocatalytic properties of mixed-phase TiO2 nanoparticles decorated with silver nanodots obtained by environmental-friendly wet chemical method using low molecular weight chitosan as the silver reducing agent. Structural analysis of synthesized Ag nanoparticles revealed that they crystallized in a rare hexagonal modification. High-resolution transmission electron microscopy study shows that lt 3-nm hexagonal-Ag nanoparticles are implanted on the surface of lt 20-nm anatase grains. Compared to Ag-free TiO2 powders, implantation with Ag results in important increase in visible light absorption. The photocatalytic activity of the samples was measured by monitoring decolorization of concentrated textile dye solution (50 mg L-1 of Reactive Orange 16) under simulated solar irradiation of 280 W m(-2). The optimum photocatalytic properties are achieved with 5 wt% of silver. Based on the collected results, the operating mechanism of the degradation process is suggested, and the effects of the silver addition are explained. T2 - Journal of the American Ceramic Society T1 - Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2 EP - 347 IS - 1 SP - 336 VL - 105 DO - 10.1111/jace.18059 ER -
@article{ author = "Tasic, Nikola and Cirković, Jovana and Ribic, Vesna and Zunic, Milan and Dapčević, Aleksandra and Brankovic, Goran and Branković, Zorica", year = "2022", abstract = "We present the synthesis and photocatalytic properties of mixed-phase TiO2 nanoparticles decorated with silver nanodots obtained by environmental-friendly wet chemical method using low molecular weight chitosan as the silver reducing agent. Structural analysis of synthesized Ag nanoparticles revealed that they crystallized in a rare hexagonal modification. High-resolution transmission electron microscopy study shows that lt 3-nm hexagonal-Ag nanoparticles are implanted on the surface of lt 20-nm anatase grains. Compared to Ag-free TiO2 powders, implantation with Ag results in important increase in visible light absorption. The photocatalytic activity of the samples was measured by monitoring decolorization of concentrated textile dye solution (50 mg L-1 of Reactive Orange 16) under simulated solar irradiation of 280 W m(-2). The optimum photocatalytic properties are achieved with 5 wt% of silver. Based on the collected results, the operating mechanism of the degradation process is suggested, and the effects of the silver addition are explained.", journal = "Journal of the American Ceramic Society", title = "Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2", pages = "347-336", number = "1", volume = "105", doi = "10.1111/jace.18059" }
Tasic, N., Cirković, J., Ribic, V., Zunic, M., Dapčević, A., Brankovic, G.,& Branković, Z.. (2022). Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2. in Journal of the American Ceramic Society, 105(1), 336-347. https://doi.org/10.1111/jace.18059
Tasic N, Cirković J, Ribic V, Zunic M, Dapčević A, Brankovic G, Branković Z. Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2. in Journal of the American Ceramic Society. 2022;105(1):336-347. doi:10.1111/jace.18059 .
Tasic, Nikola, Cirković, Jovana, Ribic, Vesna, Zunic, Milan, Dapčević, Aleksandra, Brankovic, Goran, Branković, Zorica, "Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2" in Journal of the American Ceramic Society, 105, no. 1 (2022):336-347, https://doi.org/10.1111/jace.18059 . .