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Zaštita materijala
2013, vol. 54, br. 3, str. 249-254
jezik rada: engleski
vrsta rada: izvorni naučni članak

Novi H2O2 senzori na bazi nizova srebro nanožica
aDepartment of Physical Chemistry and Electrochemistry, Jagiellonian University, Krakow, Poland
bFaculty of NonFerrous Metals, AGH University of Science and Technology, Krakow, Poland

Sažetak

Zahvaljujući svojim jakim oksidacionim svojstvima , vodonik peroksid (H2O2) ima širok spektar primene. To je ključna komponenta za mnoge industrijske aplikacije, kao što su farmaceutski i kozmetički proizvodi ili sterilizacija. Šta više, H2O2 se proizvodi u ljudskom telu u ćelijama imunog sistema i predstavlja proizvod oksidacije glukoze. Dakle, stvaranje efikasnog i selektivnog načina H2O2 detekcije je bilo od velikog značaja. Novi senzor glukoze, na osnovu srebro nanožica deponovanih u nanoporozni anodni aluminijum-oksida (AAO) je predložen. AAO šabloni su pripremljeni preko anodne oksidacije aluminijuma u tri elektrolita: oksalne, sumporne i fosforne kiseline. Srebro nanožice stvorene su taloženjem srebra u AAO šablone. Elektrode na osnovu srebro nanožica su zatim ispitivane na elektrokatalitička svojstva . Redukcija H2O2 na srebrnim nanožicama je testirana primenom ciklične voltametrije (CV) i hronoamperometrije (CHA ). Uticaj smeša supstanci, kao što su askorbinska kiselina, je takođe ispitivan.

Ključne reči

senzori; vodonikperodsid; srebro nanožice; elektrokatalitička svojstva

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