The removal of thiophanate-methyl using novely synthesized catalysts CeO2-P25 under simulated sunlight: Structural characterisation and photocatalytic activity
Authors
Jovanović, Aleksandar
Stevanović, Marija
Bugarčić, Mladen

Sokić, Miroslav

Tomašević, Anđelka
Marinković, Aleksandar
Contributors
Bavcon Kralj, MojcaTrebše, Polonca
Prosenc, Franja
Šunta, Urška
Čižmek, Lara
Conference object (Published version)

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Show full item recordAbstract
Environmental pollution by wastewater
represents one of the greatest challenges nowadays.
The solution for this issue requires implementation
of novel treatment methods. Therefore, enhanced
techniques so-called Advanced oxidation processes
(AOPs) are gaining increasing attention.
Photocatalysis is a process based on the use of
different types of irradiations on a pollutants
adhered on a catalyst, driven by formation of
radicals and oxidative species on the catalyst
surface. Modern agricultural practice relies on use
of different classes of pesticides, and to its, often,
uncontrolled and excessive use. It leads to their
widespread in the environment, with frequent
detection in waterbodies and soil. Thiophanatemethyl
(TPM) is benzimidazole fungicide, used in
control of diverse groups of phytopatogenic fungus
[1].
Specifically efficient and economically viable
catalysts are TiO2-based. Multiphase catalysts
showed better results in the degradation of various
pollutants..., so TiO2 P25 (Degussa) was used as a
material that boosts photocatalytic decomposition.
In order to advance and fasten the reaction, the
surface of TiO2 P25 was decorated with cerium (IV)
oxide [2]. Surface and photochemical properties of
newly obtained material are characterised by
HR - TEM, HAADF - STEM; FTIR and UV - DRS
methods.
In this study, the photocatalytic degradation of
thiophanate-methyl (TPM) in the presence of
CeO2 - P25 was investigated. Different
experimental conditions were varied, such as the
concentration of the pesticide solution and the mass
of the catalyst. Monitoring of the pesticide
concentration in the reaction system was based on
the decrease in absorbance using a Shimadzu 1800
UV spectrophotometer.
Results of textural and structural analyses prove
decoration of P25 surface with particles of cerium
(IV) oxide uniformly. Synthesised nanocatalyst
CeO2-P25 has lower band gap energy (2.90 eV) then
P25 (3.30 eV).
The optimal experimental conditions were
obtained using 0.07 g/L of CeO2-P25 and 5 mg/L of
TPM solution. Degradation reaction rate follows
pseudo-first order law. Complete degradation was
performed after 120 min. In experiments with TiO2
P25 catalyst (Degussa) degradation time was 240
min. Hence, it can be concluded that the synthesized
CeO2-P25 catalyst has better performance.
Source:
22nd European Meeting on Environmental Chemistry EMEC22, 2022, 68-68Publisher:
- Ljubljana : University of Ljubljana Press
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) (RS-200023)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200214 (Institue of Pesticides and Environmental Protection, Belgrade) (RS-200214)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
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Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - CONF AU - Jovanović, Aleksandar AU - Stevanović, Marija AU - Bugarčić, Mladen AU - Sokić, Miroslav AU - Tomašević, Anđelka AU - Marinković, Aleksandar PY - 2022 UR - https://ritnms.itnms.ac.rs/handle/123456789/1025 AB - Environmental pollution by wastewater represents one of the greatest challenges nowadays. The solution for this issue requires implementation of novel treatment methods. Therefore, enhanced techniques so-called Advanced oxidation processes (AOPs) are gaining increasing attention. Photocatalysis is a process based on the use of different types of irradiations on a pollutants adhered on a catalyst, driven by formation of radicals and oxidative species on the catalyst surface. Modern agricultural practice relies on use of different classes of pesticides, and to its, often, uncontrolled and excessive use. It leads to their widespread in the environment, with frequent detection in waterbodies and soil. Thiophanatemethyl (TPM) is benzimidazole fungicide, used in control of diverse groups of phytopatogenic fungus [1]. Specifically efficient and economically viable catalysts are TiO2-based. Multiphase catalysts showed better results in the degradation of various pollutants, so TiO2 P25 (Degussa) was used as a material that boosts photocatalytic decomposition. In order to advance and fasten the reaction, the surface of TiO2 P25 was decorated with cerium (IV) oxide [2]. Surface and photochemical properties of newly obtained material are characterised by HR - TEM, HAADF - STEM; FTIR and UV - DRS methods. In this study, the photocatalytic degradation of thiophanate-methyl (TPM) in the presence of CeO2 - P25 was investigated. Different experimental conditions were varied, such as the concentration of the pesticide solution and the mass of the catalyst. Monitoring of the pesticide concentration in the reaction system was based on the decrease in absorbance using a Shimadzu 1800 UV spectrophotometer. Results of textural and structural analyses prove decoration of P25 surface with particles of cerium (IV) oxide uniformly. Synthesised nanocatalyst CeO2-P25 has lower band gap energy (2.90 eV) then P25 (3.30 eV). The optimal experimental conditions were obtained using 0.07 g/L of CeO2-P25 and 5 mg/L of TPM solution. Degradation reaction rate follows pseudo-first order law. Complete degradation was performed after 120 min. In experiments with TiO2 P25 catalyst (Degussa) degradation time was 240 min. Hence, it can be concluded that the synthesized CeO2-P25 catalyst has better performance. PB - Ljubljana : University of Ljubljana Press C3 - 22nd European Meeting on Environmental Chemistry EMEC22 T1 - The removal of thiophanate-methyl using novely synthesized catalysts CeO2-P25 under simulated sunlight: Structural characterisation and photocatalytic activity EP - 68 SP - 68 DO - 10.55295/9789612970352 ER -
@conference{ author = "Jovanović, Aleksandar and Stevanović, Marija and Bugarčić, Mladen and Sokić, Miroslav and Tomašević, Anđelka and Marinković, Aleksandar", year = "2022", abstract = "Environmental pollution by wastewater represents one of the greatest challenges nowadays. The solution for this issue requires implementation of novel treatment methods. Therefore, enhanced techniques so-called Advanced oxidation processes (AOPs) are gaining increasing attention. Photocatalysis is a process based on the use of different types of irradiations on a pollutants adhered on a catalyst, driven by formation of radicals and oxidative species on the catalyst surface. Modern agricultural practice relies on use of different classes of pesticides, and to its, often, uncontrolled and excessive use. It leads to their widespread in the environment, with frequent detection in waterbodies and soil. Thiophanatemethyl (TPM) is benzimidazole fungicide, used in control of diverse groups of phytopatogenic fungus [1]. Specifically efficient and economically viable catalysts are TiO2-based. Multiphase catalysts showed better results in the degradation of various pollutants, so TiO2 P25 (Degussa) was used as a material that boosts photocatalytic decomposition. In order to advance and fasten the reaction, the surface of TiO2 P25 was decorated with cerium (IV) oxide [2]. Surface and photochemical properties of newly obtained material are characterised by HR - TEM, HAADF - STEM; FTIR and UV - DRS methods. In this study, the photocatalytic degradation of thiophanate-methyl (TPM) in the presence of CeO2 - P25 was investigated. Different experimental conditions were varied, such as the concentration of the pesticide solution and the mass of the catalyst. Monitoring of the pesticide concentration in the reaction system was based on the decrease in absorbance using a Shimadzu 1800 UV spectrophotometer. Results of textural and structural analyses prove decoration of P25 surface with particles of cerium (IV) oxide uniformly. Synthesised nanocatalyst CeO2-P25 has lower band gap energy (2.90 eV) then P25 (3.30 eV). The optimal experimental conditions were obtained using 0.07 g/L of CeO2-P25 and 5 mg/L of TPM solution. Degradation reaction rate follows pseudo-first order law. Complete degradation was performed after 120 min. In experiments with TiO2 P25 catalyst (Degussa) degradation time was 240 min. Hence, it can be concluded that the synthesized CeO2-P25 catalyst has better performance.", publisher = "Ljubljana : University of Ljubljana Press", journal = "22nd European Meeting on Environmental Chemistry EMEC22", title = "The removal of thiophanate-methyl using novely synthesized catalysts CeO2-P25 under simulated sunlight: Structural characterisation and photocatalytic activity", pages = "68-68", doi = "10.55295/9789612970352" }
Jovanović, A., Stevanović, M., Bugarčić, M., Sokić, M., Tomašević, A.,& Marinković, A.. (2022). The removal of thiophanate-methyl using novely synthesized catalysts CeO2-P25 under simulated sunlight: Structural characterisation and photocatalytic activity. in 22nd European Meeting on Environmental Chemistry EMEC22 Ljubljana : University of Ljubljana Press., 68-68. https://doi.org/10.55295/9789612970352
Jovanović A, Stevanović M, Bugarčić M, Sokić M, Tomašević A, Marinković A. The removal of thiophanate-methyl using novely synthesized catalysts CeO2-P25 under simulated sunlight: Structural characterisation and photocatalytic activity. in 22nd European Meeting on Environmental Chemistry EMEC22. 2022;:68-68. doi:10.55295/9789612970352 .
Jovanović, Aleksandar, Stevanović, Marija, Bugarčić, Mladen, Sokić, Miroslav, Tomašević, Anđelka, Marinković, Aleksandar, "The removal of thiophanate-methyl using novely synthesized catalysts CeO2-P25 under simulated sunlight: Structural characterisation and photocatalytic activity" in 22nd European Meeting on Environmental Chemistry EMEC22 (2022):68-68, https://doi.org/10.55295/9789612970352 . .