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A multi-technique study of gold oxidation and semiconducting properties of the compact α -oxide layer


Petrović, Željka; Metikoš-Huković, Mirjana; Babić, Ranko; Katić, Jozefina; Milun, Milorad
A multi-technique study of gold oxidation and semiconducting properties of the compact α -oxide layer // Journal of Electroanalytical Chemistry, 629 (2009), 1-2; 43-49 doi:10.1016/j.jelechem.2009.01.020 (međunarodna recenzija, članak, znanstveni)


Naslov
A multi-technique study of gold oxidation and semiconducting properties of the compact α -oxide layer
(A multi-technique study of gold oxidation and semiconducting properties of the compact alfa-oxide layer)

Autori
Petrović, Željka ; Metikoš-Huković, Mirjana ; Babić, Ranko ; Katić, Jozefina ; Milun, Milorad

Izvornik
Journal of Electroanalytical Chemistry (1572-6657) 629 (2009), 1-2; 43-49

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Electrooxidation of gold; Underpotential Deposition (UPD) of OH radicals; semiconducting properties; electrochemical ac/dc techniques; EQCN; XPS

Sažetak
The initial stage of gold oxidation at the quartz crystal electrode in a near neutral solution was studied by using potentiostatic and potentiodynamic sweep methods. The underpotential deposition of OH radicals was the first stage of the nucleation and formation of the phase oxide Au2O3. The composition of the oxide was determined by the X-ray photoemission spectroscopy (XPS). Three-dimensional (3D) progressive nucleation occurred under diffusion control. The electronic structure of the compact alfa-oxide film and the charge distribution at the oxide layer / electrolyte interface were examined using photopotential and capacitance measurements. Anodically formed oxide film on gold was highly-doped defect semiconductor of n-type conductivity.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
035-0352828-2840 - Elektronska i kristalna struktura poduprtih samoorganiziranih nano-sistema (Petar Pervan, )
125-0982904-2923 - Novi materijali i katalizatori za održive tehnologije (Mirjana Metikoš-Huković, )

Ustanove
Institut za fiziku, Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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