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P-nitrophenol electro-oxidation on a btma(+)-bentonite-modified electrode
dc.creator | Abu Rabi-Stanković, Andjela S. | |
dc.creator | Milutinović Nikolić, Aleksandra | |
dc.creator | Jović-Jovičić, Nataša | |
dc.creator | Banković, Predrag | |
dc.creator | Žunić, Marija | |
dc.creator | Mojović, Zorica | |
dc.creator | Jovanović, Dušan M. | |
dc.date.accessioned | 2019-01-30T17:32:31Z | |
dc.date.available | 2019-01-30T17:32:31Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0009-8604 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/1102 | |
dc.description.abstract | Phenol and its derivatives arc regarded as 'priority pollutants' and p-nitrophenol (p-NP), in particular, is of great interest due to its toxicity and frequent presence in waste waters and fresh waters. Straightforward, inexpensive methods to identify p-NP in water, however, is lacking. In the present study, an electrochemical technique using clay-modified electrodes to measure p-NP was investigated as a potentially promising method to fill that gap. A glassy carbon electrode (GCE) was modified with a thin layer of Na-enriched bentonite and a series of benzyltrimethylammonium (BTMA(+))-bentonites (BTMA(+)-B) in order to confirm these materials as p-NP electrosensitive. A series of organobentonites was synthesized using different BTMA(+)/bentonite ratios. The materials obtained were characterized using X-ray diffraction, Fourier-transform infrared spectroscopy, and a low-temperature nitrogen adsorption-desorption method. A monolayer arrangement of BTMA(+) within the interlamellar region of beidellite-rich smectite was confirmed. Deterioration of the textural properties was observed with increase of BTMA(+). loading. The electro-oxidation of p-NP in an acidic medium on BTMA(+)-B-modified GCE was investigated. The cyclic voltammetry method with a three-electrode cell was used. The reference electrode was Ag/AgCl in 3 M KCl and a Pt foil was the counter electrode. For each electrochemical measurement, a different BTMA(+) loading in BTMA(+)-B was used as the material for GCE coating and applied as the working electrode. The electrochemical activity of BTMA(+)-B-based electrodes increased with BTMA(+) loading. The results confirmed that the organophylic character of the BTMA(+)-B-modified surface was the main influence on the electrochemical activity of the BTMA(+)-B-based GCE; the influence of textural properties was almost negligible. The increased electrode activity toward p-NP was achieved by the adsorption of p-NP on the electrode surface, the process that commonly precedes the electro-oxidation. The present study showed that synthesized materials could potentially be used in an electrochemical test for the presence of p-NP in water solutions. | en |
dc.publisher | Clay Minerals Soc, Chantilly | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45001/RS// | |
dc.rights | restrictedAccess | |
dc.source | Clays and Clay Minerals | |
dc.subject | BTMA(+)-bentonite | en |
dc.subject | Cyclovoltammetry | en |
dc.subject | Electrochemical Properties | en |
dc.subject | Modified Electrode | en |
dc.subject | Para-nitrophenol | en |
dc.subject | Priority Pollutant | en |
dc.title | P-nitrophenol electro-oxidation on a btma(+)-bentonite-modified electrode | en |
dc.type | article | |
dc.rights.license | ARR | |
dcterms.abstract | Милутиновић Николић, Aлександра; Aбу Раби-Станковић, Aндјела С.; Банковић, Предраг; Зуниц, М.; Јовановиц, Д.; Јовић-Јовичић, Наташа; Мојовић, Зорица; | |
dc.citation.volume | 60 | |
dc.citation.issue | 3 | |
dc.citation.spage | 291 | |
dc.citation.epage | 299 | |
dc.citation.other | 60(3): 291-299 | |
dc.citation.rank | M23 | |
dc.identifier.doi | 10.1346/CCMN.2012.0600306 | |
dc.identifier.scopus | 2-s2.0-84866510589 | |
dc.identifier.wos | 000308834800006 | |
dc.type.version | publishedVersion |