TY  - JOUR
AU  - Tekić, Danijela
AU  - Jevremović, Anka
AU  - Uskoković-Marković, Snežana
AU  - Janošević-Ležaić, Aleksandra
AU  - Mijailović, Nataša R.
AU  - Milenković, Marina
AU  - Gavrilov, Nemanja
AU  - Bajuk-Bogdanović, Danica
AU  - Milojević-Rakić, Maja
PY  - 2024
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/5707
AB  - The study evaluates caesium, potassium, silver, and zinc tungstophosphates synthesized in bulk and Y zeolite-supported forms through a two-step process. Spectral investigation reveals the impact of cation size on tungstophosphates formation. The large cations form ion-ion interaction with the Keggin ion, while smaller cations form hydrogen bonds between the cation hydration sphere and terminal oxygens in the Keggin ion. Supported salts formation proceeds without Keggin ion distortion. Zeta potential showed the absence of particle aggregation for caesium and potassium tungstophosphate. Nicosulfuron removal by the supported salt exhibits enhanced retention, with the exception observed for zinc tungstophosphate suggesting a decomposition mechanism. Antimicrobial evaluations reveal silver salt's potency, especially in zeolite-supported form, emphasizing the role of zeolite support. In the presence of pesticide molecules, the antimicrobial activity of salts lowers, with the exception seen for fungus strain. The antioxidant assessments demonstrate superior inhibition for insoluble bulk salts, with caesium tungstophosphate exhibiting the highest inhibition, while supported silver salt enhances bulk salt performance. The presence of pesticides affects both antimicrobial and antioxidant activities, while a complex relationship with radical scavenging ability in bulk and supported salts is independent of their pesticide adsorption capacities. The study broadens the range of the versatile applications of tungstophosphates, highlighting their specific interactions with pesticides and their impact on bioactivity and environmental remediation.
PB  - Elsevier
T2  - Colloids and Surfaces A: Physicochemical and Engineering Aspects
T1  - Bulk or supported tungstophosphates? Antioxidant and antimicrobial
activities following pesticide removal
VL  - 700
DO  - 10.1016/j.colsurfa.2024.134852
ER  - 

@article{
author = "Tekić, Danijela and Jevremović, Anka and Uskoković-Marković, Snežana and Janošević-Ležaić, Aleksandra and Mijailović, Nataša R. and Milenković, Marina and Gavrilov, Nemanja and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja",
year = "2024",
abstract = "The study evaluates caesium, potassium, silver, and zinc tungstophosphates synthesized in bulk and Y zeolite-supported forms through a two-step process. Spectral investigation reveals the impact of cation size on tungstophosphates formation. The large cations form ion-ion interaction with the Keggin ion, while smaller cations form hydrogen bonds between the cation hydration sphere and terminal oxygens in the Keggin ion. Supported salts formation proceeds without Keggin ion distortion. Zeta potential showed the absence of particle aggregation for caesium and potassium tungstophosphate. Nicosulfuron removal by the supported salt exhibits enhanced retention, with the exception observed for zinc tungstophosphate suggesting a decomposition mechanism. Antimicrobial evaluations reveal silver salt's potency, especially in zeolite-supported form, emphasizing the role of zeolite support. In the presence of pesticide molecules, the antimicrobial activity of salts lowers, with the exception seen for fungus strain. The antioxidant assessments demonstrate superior inhibition for insoluble bulk salts, with caesium tungstophosphate exhibiting the highest inhibition, while supported silver salt enhances bulk salt performance. The presence of pesticides affects both antimicrobial and antioxidant activities, while a complex relationship with radical scavenging ability in bulk and supported salts is independent of their pesticide adsorption capacities. The study broadens the range of the versatile applications of tungstophosphates, highlighting their specific interactions with pesticides and their impact on bioactivity and environmental remediation.",
publisher = "Elsevier",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
title = "Bulk or supported tungstophosphates? Antioxidant and antimicrobial
activities following pesticide removal",
volume = "700",
doi = "10.1016/j.colsurfa.2024.134852"
}

Tekić, D., Jevremović, A., Uskoković-Marković, S., Janošević-Ležaić, A., Mijailović, N. R., Milenković, M., Gavrilov, N., Bajuk-Bogdanović, D.,& Milojević-Rakić, M.. (2024). Bulk or supported tungstophosphates? Antioxidant and antimicrobial
activities following pesticide removal. in Colloids and Surfaces A: Physicochemical and Engineering Aspects
Elsevier., 700.
https://doi.org/10.1016/j.colsurfa.2024.134852

Tekić D, Jevremović A, Uskoković-Marković S, Janošević-Ležaić A, Mijailović NR, Milenković M, Gavrilov N, Bajuk-Bogdanović D, Milojević-Rakić M. Bulk or supported tungstophosphates? Antioxidant and antimicrobial
activities following pesticide removal. in Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2024;700.
doi:10.1016/j.colsurfa.2024.134852 .

Tekić, Danijela, Jevremović, Anka, Uskoković-Marković, Snežana, Janošević-Ležaić, Aleksandra, Mijailović, Nataša R., Milenković, Marina, Gavrilov, Nemanja, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, "Bulk or supported tungstophosphates? Antioxidant and antimicrobial
activities following pesticide removal" in Colloids and Surfaces A: Physicochemical and Engineering Aspects, 700 (2024),
https://doi.org/10.1016/j.colsurfa.2024.134852 . .

TY  - JOUR
AU  - Rupar, Jelena
AU  - Tekić, Danijela
AU  - Janošević-Ležaić, Aleksandra
AU  - Upadhyay, Kush K.
PY  - 2023
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/4419
AB  - Due to the limited reaction rate of the oxygen reduction reaction (ORR), it is considered as a limiting factor in the performance of fuel cells and metal-air batteries. Platinum is considered the benchmark catalyst for ORR; however, the scarcity of platinum, its high price, the drift phenomenon, its insufficient durability, and its susceptibility to gas poisoning are the reasons for the constant search for new ORR catalysts. Carbon-based catalysts show exceptional promise in this respect considering economic profitability and activity, and, in addition, they have favorable conductivity and often a large specific surface area. The use of chitin, cellulose, lignin, coconut shell particles, shrimp shells, and even hair for this purpose was reported, as they had similar electrochemical activity regarding Pt. Alginate, a natural polymer and a constituent of brown algae, can be successfully used to obtain carbon materials that catalyze ORR. In addition, metal atomic-level catalysts and metal N-doped porous carbon materials, obtained from sodium alginate as a precursor, have been proposed as efficient electrocatalysts for ORR. Except for alginate, other biopolymers have been reported to play an important role in the preparation of ORR catalysts. In this review, recent advances regarding biopolymer-derived ORR catalysts are summarized, with a focus on alginate as a source.
PB  - MDPI
T2  - Catalysts
T1  - ORR Catalysts Derived from Biopolymers
VL  - 13
IS  - 1
DO  - 10.3390/catal13010080
ER  - 

@article{
author = "Rupar, Jelena and Tekić, Danijela and Janošević-Ležaić, Aleksandra and Upadhyay, Kush K.",
year = "2023",
abstract = "Due to the limited reaction rate of the oxygen reduction reaction (ORR), it is considered as a limiting factor in the performance of fuel cells and metal-air batteries. Platinum is considered the benchmark catalyst for ORR; however, the scarcity of platinum, its high price, the drift phenomenon, its insufficient durability, and its susceptibility to gas poisoning are the reasons for the constant search for new ORR catalysts. Carbon-based catalysts show exceptional promise in this respect considering economic profitability and activity, and, in addition, they have favorable conductivity and often a large specific surface area. The use of chitin, cellulose, lignin, coconut shell particles, shrimp shells, and even hair for this purpose was reported, as they had similar electrochemical activity regarding Pt. Alginate, a natural polymer and a constituent of brown algae, can be successfully used to obtain carbon materials that catalyze ORR. In addition, metal atomic-level catalysts and metal N-doped porous carbon materials, obtained from sodium alginate as a precursor, have been proposed as efficient electrocatalysts for ORR. Except for alginate, other biopolymers have been reported to play an important role in the preparation of ORR catalysts. In this review, recent advances regarding biopolymer-derived ORR catalysts are summarized, with a focus on alginate as a source.",
publisher = "MDPI",
journal = "Catalysts",
title = "ORR Catalysts Derived from Biopolymers",
volume = "13",
number = "1",
doi = "10.3390/catal13010080"
}

Rupar, J., Tekić, D., Janošević-Ležaić, A.,& Upadhyay, K. K.. (2023). ORR Catalysts Derived from Biopolymers. in Catalysts
MDPI., 13(1).
https://doi.org/10.3390/catal13010080

Rupar J, Tekić D, Janošević-Ležaić A, Upadhyay KK. ORR Catalysts Derived from Biopolymers. in Catalysts. 2023;13(1).
doi:10.3390/catal13010080 .

Rupar, Jelena, Tekić, Danijela, Janošević-Ležaić, Aleksandra, Upadhyay, Kush K., "ORR Catalysts Derived from Biopolymers" in Catalysts, 13, no. 1 (2023),
https://doi.org/10.3390/catal13010080 . .