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  1. Article ; Online: Recent Advances in Electrochemical Determination of Pesticides.

    Momčilović, Milan Z / Milićević, Jelena S / Ranđelović, Marjan S

    Journal of nanoscience and nanotechnology

    2021  Volume 21, Issue 12, Page(s) 5795–5811

    Abstract: Widespread usage of pesticides in agricultural practice caused their residues to appear in water and food products intended for human consumption. The potential toxicity of these resources has raised awareness about pesticide tracking in the environment. ...

    Abstract Widespread usage of pesticides in agricultural practice caused their residues to appear in water and food products intended for human consumption. The potential toxicity of these resources has raised awareness about pesticide tracking in the environment. Development of reliable electrochemical sensors for the on-site determination of pesticide concentrations is envisioned as an alternative to conventional chromatographic methods which are robust, expensive and require skilled work force. Modification of the working electrode surface can result in enhanced electrochemical response towards selected pesticide making such electrode convenient sensor for facile and efficient determination of pesticides in low concentrations. New generation of nanomaterials is applied in electrode modification in order to improve its sensitivity and selectivity. The present review summarizes significant advances in voltammetric detection of pesticides for the period of the past five years. The major focus of this review is set to the types of carbon and oxide based materials, metal nanoparticles, composites and other materials employed to upgrade standard electrode configurations such as glassy carbon and carbon paste electrodes, boron doped diamond electrodes, screen printed and film electrodes, metal and amalgam, and other kinds of electrodes.
    MeSH term(s) Boron ; Carbon ; Diamond ; Electrochemical Techniques ; Electrodes ; Humans ; Pesticides/analysis
    Chemical Substances Pesticides ; Carbon (7440-44-0) ; Diamond (7782-40-3) ; Boron (N9E3X5056Q)
    Language English
    Publishing date 2021-03-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ISSN 1533-4899
    ISSN (online) 1533-4899
    DOI 10.1166/jnn.2021.19541
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Multiwalled carbon nanotubes modified with MoO

    Milićević, Jelena S / Ranđelović, Marjan S / Momčilović, Milan Z / Zarubica, Aleksandra R / Mofarah, Sajjad S / Matović, Branko / Sorrel, Charles C

    Mikrochimica acta

    2020  Volume 187, Issue 8, Page(s) 429

    Abstract: A glassy carbon electrode was functionalized by ... ...

    Abstract A glassy carbon electrode was functionalized by MoO
    Language English
    Publishing date 2020-07-06
    Publishing country Austria
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 89-9
    ISSN 1436-5073 ; 0026-3672
    ISSN (online) 1436-5073
    ISSN 0026-3672
    DOI 10.1007/s00604-020-04406-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 56/171: Show issues
    Z 8.1: Show issues

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  3. Article ; Online: Study on efficient removal of clopyralid from water using resorcinol-formaldehyde carbon cryogel

    Momčilović Milan Z. / Ranđelović Marjan S. / Onjia Antonije E. / Zarubica Aleksandra / Babić Biljana M. / Matović Branko Z.

    Journal of the Serbian Chemical Society, Vol 79, Iss 4, Pp 481-

    2014  Volume 494

    Abstract: Resorcinol-formaldehyde carbon cryogel has been prepared, characterized and used for the removal of commonly used herbicide clopyralid from the aqueous solutions under varying experimental conditions. Carbon has shown a relatively high specific surface ... ...

    Abstract Resorcinol-formaldehyde carbon cryogel has been prepared, characterized and used for the removal of commonly used herbicide clopyralid from the aqueous solutions under varying experimental conditions. Carbon has shown a relatively high specific surface area, significant mesoporosity and an amorphous structure. A set of the following isotherm models has been used to interpret the equilibrium data: Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Jovanović, Hurkins-Jura, and Helsey model. Several models have fitted well although the calculated values for qmax poorly correlate with the data obtained experimentally. The kinetic models of the pseudo-first and pseudo-second-order, the models of Elovich, Bangham and the intraparticle diffusion model have been used for fitting the kinetic data. The rate of the process is fast in the beginning while adsorption equilibrium is attained not until 24 hours. Adsorption was found to be pH dependent and favored in acidic solutions.
    Keywords clopyralid ; carbon cryogel ; mesoporosity ; adsorption mechanism ; Chemistry ; QD1-999
    Subject code 541
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher Serbian Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: SBA-15 templated mesoporous carbons for 2,4-dichlorophenoxyacetic acid removal

    Momčilović, Milan Z / Ranđelović, Marjan S / Zarubica, Aleksandra R / Onjia, Antonije E / Kokunešoski, Maja / Matović, Branko Z

    Chemical engineering journal. 2013 Mar. 15, v. 220

    2013  

    Abstract: The ordered mesoporous silica SBA-15 was synthesized and used as a template for obtaining mesoporous carbon replicas. Adsorptive removal of pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solutions onto two carbon replicas was investigated. ...

    Abstract The ordered mesoporous silica SBA-15 was synthesized and used as a template for obtaining mesoporous carbon replicas. Adsorptive removal of pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solutions onto two carbon replicas was investigated. Batch adsorption experiments varied in initial adsorptive concentration, contacting times, solution pH, and adsorbent dosage. Pseudo-first order model, pseudo-second order model, and intraparticle diffusion model were selected to interpret the kinetics of adsorption. Kinetic parameters such as rate constants, equilibrium adsorption capacities and correlation coefficients were calculated and discussed for each model. Equilibrium data were linearly fitted to Langmuir, Freundlich, Tamkin, Dubinin–Radushkevich, Jovanovic, Hurkins–Jura and Halsey isotherm models. It was shown that adsorption of 2,4-D onto two carbon replicas well followed the pseudo-second order kinetic model. Langmuir isotherm represented experimental data in the best way since this model gave the best fit. Adsorption capacity strongly depends on the solution pH and increases at lower pH values.
    Keywords 2,4-D ; adsorbents ; adsorption ; aqueous solutions ; carbon ; chemical engineering ; correlation ; models ; pH ; silica ; sorption isotherms
    Language English
    Dates of publication 2013-0315
    Size p. 276-283.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 2012137-4
    ISSN 1873-3212 ; 1385-8947
    ISSN (online) 1873-3212
    ISSN 1385-8947
    DOI 10.1016/j.cej.2012.12.024
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Removal of cationic dye from water by activated pine cones

    Momčilović Milan Z. / Onjia Antonije E. / Purenović Milovan M. / Zarubica Aleksandra R / Ranđelović Marjan S.

    Journal of the Serbian Chemical Society, Vol 77, Iss 6, Pp 761-

    2012  Volume 774

    Abstract: Adsorption of a cationic phenothyazine dye methylene blueonto activated carbon prepared from pine cones was investigated with the variation in parameters of contact time, dye concentration and pH. The kinetic data were found to follow the pseudo-second- ... ...

    Abstract Adsorption of a cationic phenothyazine dye methylene blueonto activated carbon prepared from pine cones was investigated with the variation in parameters of contact time, dye concentration and pH. The kinetic data were found to follow the pseudo-second-order kinetic modelclosely. The equilibrium data were best represented by the Langmuir isotherm with maximum adsorption capacity of 233.1 mg g-1. Adsorption was favored by using a higher solution pH. Textural analysis by nitrogen adsorption was used to determine specific surface area and pore structure of the obtained carbon. Boehm titrations revealed that carboxylic groups are present in the highest degree on the carbon surface. The results indicate that the presented method for activation of pine cones could yield activated carbon with significant porosity, developed surface reactivity and considerable adsorption affinity toward cationic dye methylene blue.
    Keywords activated carbon ; adsorption ; kinetics ; methylene blue ; Chemistry ; QD1-999
    Language English
    Publishing date 2012-01-01T00:00:00Z
    Publisher Serbian Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Physico-chemical characterization of bentonite and its application for Mn2+ removal from water

    Ranđelović Marjan S. / Purenović Milovan M. / Zarubica Aleksandra R. / Mladenović Igor D. / Purenović Jelena M. / Momčilović Milan Z.

    Hemijska Industrija, Vol 65, Iss 4, Pp 381-

    2011  Volume 387

    Abstract: Bentonite is mainly composed of clay minerals from smectite group, therefore it has a well developed and chemically active surface area and high cation exchange capacity. Moreover, an interlayer space of smectite has unusual hydration properties, which ... ...

    Abstract Bentonite is mainly composed of clay minerals from smectite group, therefore it has a well developed and chemically active surface area and high cation exchange capacity. Moreover, an interlayer space of smectite has unusual hydration properties, which manifest as swelling of bentonite in water. These properties make bentonite as a commonly used raw material in chemistry and industry, and it is very important in environmental protection and water treatment as an effective sorbent of heavy metals. The results of X-ray diffraction, a cationic exchange capacity, specific surface area, acid-base properties of the surface and the swelling index showed that the bentonite sample contains mostly montmorillonite. The aim of this study was to test the efficacy of bentonite in the removal of Mn2+ from aqueous systems. The experimental results of Mn2+ adsorption on the bentonite were interpreted by Langmuir, Freundlich and Dubinin-Radushkevich adsorption isotherms. The adsorption isotherm studies indicate that the adsorption of Mn2+ follows Langmuir isotherm very well. Theoretical monolayer saturation capacity according to Langmuir model was 12.41 mg/g. The removal of Mn2+ is achieved by ion exchange mechanism with naturally occurring cations in bentonite, as well as by forming the inner- and outer-sphere complexes with bentonite surface.
    Keywords bentonite ; clay minerals ; manganese removal ; adsorption ; Chemistry ; QD1-999 ; Science ; Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry
    Subject code 540
    Language English
    Publishing date 2011-01-01T00:00:00Z
    Publisher Association of Chemical Engineers, Belgrade
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Adsorption of cationic dye methylene blue onto activated carbon obtained from horse chestnut kernel

    Momčilović Milan Z. / Purenović Milovan M. / Miljković Milena N. / Bojić Aleksandar Lj. / Ranđelović Marjan S.

    Hemijska Industrija, Vol 65, Iss 2, Pp 123-

    2011  Volume 129

    Abstract: Horse chestnut kernel was used as the precursor for the preparation of powdered activated carbon using phosphoric acid as the activating agent. Batch adsorption experiments for the adsorption of cationic dye methylene blue from aqueous solutions were ... ...

    Abstract Horse chestnut kernel was used as the precursor for the preparation of powdered activated carbon using phosphoric acid as the activating agent. Batch adsorption experiments for the adsorption of cationic dye methylene blue from aqueous solutions were carried out using the obtained carbon as adsorbent. Equilibrium and kinetic experiments were conducted. The equilibrium data were fitted with the Langmuir, Freundlich and Temkin theoretical isotherm models. The best results was obtained in the case of Langmuir model, which indicates that monolayer adsorption occurs on finite number of the active adsorption sites on the carbon surface. The kinetic data were fitted with pseudo-first, pseudo-second, Elovich and interparticle diffusion model. Pseudo-second order model and Elovich model showed the best results of the kinetic data. The increasing of the solution pH led to a higher uptake of methylene blue due to the fact that competitive adsorption of methylene blue cation and proton exists in acidic solutions. The adsorption capacity for methylene blue in equilibrium study was significant (168.93 mg g-1). Comparison of the adsorption capacities of methylene blue onto activated carbons derived from various alternative precursors proves chestnut kernel to be efficient and low-cost material which could be substantially deployed in the future.
    Keywords adsorption ; methylene blue ; chestnut kernel ; activated carbon ; Chemistry ; QD1-999 ; Science ; Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry
    Subject code 541
    Language English
    Publishing date 2011-01-01T00:00:00Z
    Publisher Association of Chemical Engineers, Belgrade
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Physico-chemical characterization of powdered activated carbons obtained by thermo-chemical conversion of brown municipal waste

    Momčilović Milan Z. / Purenović Milovan M. / Miljković Milena N. / Bojić Aleksandar Lj. / Zarubica Aleksandra R. / Ranđelović Marjan S.

    Hemijska Industrija, Vol 65, Iss 3, Pp 241-

    2011  Volume 247

    Abstract: Cones of the European Black pine and Horse chestnut kernel, regarded as brown municipal waste, was utilized in this work as a precursor for powdered activated carbons. Chemical activation was employed at 500°C in inert atmosphere of nitrogen. Standard ... ...

    Abstract Cones of the European Black pine and Horse chestnut kernel, regarded as brown municipal waste, was utilized in this work as a precursor for powdered activated carbons. Chemical activation was employed at 500°C in inert atmosphere of nitrogen. Standard physico-chemical analyses were performed to examine obtained products. FTIR method was employed to determine fuctional groups which were found to be typical for activated carbons. Acidic oxygen groups were quantitatively determined using Boehm titrations. It was established that carboxylic groups on pine cone activated carbon, and phenolic groups on chestnut kernel activated carbon were dominant from all acidic oxygen groups. Since both contact pH and pHPZC were determined to be fairly acidic, it could be concluded that obtained activated carbons belong to L-type. Shape and layout of micrometer dimensioned particles were observed by scanning electron microscopy. Particles of different shapes and dimensions along with small cracks and wide crevices and voids were noticed. Textural analysis was used to determine specific surface area and pore distribution of obtained activated carbons. Obtained products possess highly developed surface area and wide pore distribution.
    Keywords activated carbon ; pine cone ; Horse chestnut kernel ; Chemistry ; QD1-999 ; Science ; Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry
    Subject code 540
    Language English
    Publishing date 2011-01-01T00:00:00Z
    Publisher Association of Chemical Engineers, Belgrade
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: SBA-15 templated mesoporous carbons for 2,4-dichlorophenoxyacetic acid removal

    Momčilović, Milan Z. / Ranđelović, Marjan S. / Zarubica, Aleksandra R. / Onjia, Antonije E. / Kokunešoski, Maja / Matović, Branko Z.

    Chemical engineering journal

    Volume v. 220

    Abstract: The ordered mesoporous silica SBA-15 was synthesized and used as a template for obtaining mesoporous carbon replicas. Adsorptive removal of pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solutions onto two carbon replicas was investigated. ...

    Abstract The ordered mesoporous silica SBA-15 was synthesized and used as a template for obtaining mesoporous carbon replicas. Adsorptive removal of pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solutions onto two carbon replicas was investigated. Batch adsorption experiments varied in initial adsorptive concentration, contacting times, solution pH, and adsorbent dosage. Pseudo-first order model, pseudo-second order model, and intraparticle diffusion model were selected to interpret the kinetics of adsorption. Kinetic parameters such as rate constants, equilibrium adsorption capacities and correlation coefficients were calculated and discussed for each model. Equilibrium data were linearly fitted to Langmuir, Freundlich, Tamkin, Dubinin–Radushkevich, Jovanovic, Hurkins–Jura and Halsey isotherm models. It was shown that adsorption of 2,4-D onto two carbon replicas well followed the pseudo-second order kinetic model. Langmuir isotherm represented experimental data in the best way since this model gave the best fit. Adsorption capacity strongly depends on the solution pH and increases at lower pH values.
    Keywords models ; 2,4-D ; sorption isotherms ; chemical engineering ; silica ; carbon ; correlation ; adsorbents ; aqueous solutions ; adsorption ; pH
    Language English
    Document type Article
    ISSN 1385-8947
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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