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Pregled bibliografske jedinice broj: 957543

ELECTROCHEMICAL BEHAVIOR OF MIXED SILVER-COPPER SULFIDE TOWARD H2O2: ANALYTICAL APPLICABILITY FOR BIOSENSING SYSTEMS


Buzuk, Marijo; Škugor Rončević, Ivana; Vladislavić, Nives; Buljac, Maša
ELECTROCHEMICAL BEHAVIOR OF MIXED SILVER-COPPER SULFIDE TOWARD H2O2: ANALYTICAL APPLICABILITY FOR BIOSENSING SYSTEMS // Book of abstracts / 25th Congress of the society of chemists and technologists of Macedonia (with international participation) 19-22 / Stafilov, Trajče (ur.).
Skopje: Society of chemists and technologists of Macedonia, 2018. str. 141-141 (poster, međunarodna recenzija, sažetak, znanstveni)


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Naslov
ELECTROCHEMICAL BEHAVIOR OF MIXED SILVER-COPPER SULFIDE TOWARD H2O2: ANALYTICAL APPLICABILITY FOR BIOSENSING SYSTEMS

Autori
Buzuk, Marijo ; Škugor Rončević, Ivana ; Vladislavić, Nives ; Buljac, Maša

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts / 25th Congress of the society of chemists and technologists of Macedonia (with international participation) 19-22 / Stafilov, Trajče - Skopje : Society of chemists and technologists of Macedonia, 2018, 141-141

ISBN
978-9989-760-16-7

Skup
25th Congress of the society of chemists and technologists of Macedonia

Mjesto i datum
Ohrid, R. Macedonia, 19–22 September 2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
hydrogen peroxide, silver-copper sulfide, carbon paste, electroanalytical, biosensing.

Sažetak
Comparative study of electrochemical behaviors of mixed silver-copper sulfides and silver sulfide has been made in order to investigate its analytical applicability as mediators in biosensing systems (containing oxidases or peroxidases). X-ray diffractometry (XRD) of prepared powder of mixed silver-copper sulfide revealed that beside ternary sulfides (AgCuS and Ag 1.2 Cu 0.8 S) also metallic silver can be found. The electrocatalytical activities of sulfides were evaluated towards the detection of hydrogen peroxide (H 2 O 2 ) at various pH values. Cyclic voltammetry was carried out to determine the exact reduction (0 V) and oxidation (0.25 V) potentials for the electrochemical reaction of H2O2 on carbon paste electrode modified with mixed silver-copper sulfide or silver sulfide. Tentative electrochemical reaction mechanisms for observed phenomenon are proposed. The amperometric studies revealed that the mixed copper-silver sulfide modified carbon paste electrode performed well by attaining a wide linear response range toward H 2 O 2 from 1 µM to 3 mM with detection limit 0.14 µM and the sensitivity of 350 µA mM -1 . In addition, good selectivity, rapid and stable response towards H 2 O 2 is obtained. Obtained results suggest promising paths for selective and sensitive application of sulfide modified electrode in biosensing system.

Izvorni jezik
Hrvatski

Znanstvena područja
Kemija



POVEZANOST RADA


Ustanove
Kemijsko-tehnološki fakultet, Split

Citiraj ovu publikaciju

Buzuk, Marijo; Škugor Rončević, Ivana; Vladislavić, Nives; Buljac, Maša
ELECTROCHEMICAL BEHAVIOR OF MIXED SILVER-COPPER SULFIDE TOWARD H2O2: ANALYTICAL APPLICABILITY FOR BIOSENSING SYSTEMS // Book of abstracts / 25th Congress of the society of chemists and technologists of Macedonia (with international participation) 19-22 / Stafilov, Trajče (ur.).
Skopje: Society of chemists and technologists of Macedonia, 2018. str. 141-141 (poster, međunarodna recenzija, sažetak, znanstveni)
Buzuk, M., Škugor Rončević, I., Vladislavić, N. & Buljac, M. (2018) ELECTROCHEMICAL BEHAVIOR OF MIXED SILVER-COPPER SULFIDE TOWARD H2O2: ANALYTICAL APPLICABILITY FOR BIOSENSING SYSTEMS. U: Stafilov, T. (ur.)Book of abstracts / 25th Congress of the society of chemists and technologists of Macedonia (with international participation) 19-22.
@article{article, editor = {Stafilov, T.}, year = {2018}, pages = {141-141}, keywords = {hydrogen peroxide, silver-copper sulfide, carbon paste, electroanalytical, biosensing.}, isbn = {978-9989-760-16-7}, title = {ELECTROCHEMICAL BEHAVIOR OF MIXED SILVER-COPPER SULFIDE TOWARD H2O2: ANALYTICAL APPLICABILITY FOR BIOSENSING SYSTEMS}, keyword = {hydrogen peroxide, silver-copper sulfide, carbon paste, electroanalytical, biosensing.}, publisher = {Society of chemists and technologists of Macedonia}, publisherplace = {Ohrid, R. Macedonia} }