Cr2O3 Nanoyapılarının Elektrokimyasal Sentezi ve Karakterizasyonu

Yıl 2020, Cilt: 7 Sayı: 2, 994 - 1003, 30.12.2020

Ahmet Recep Korkmaz Emir Çepni Hülya Öztürk Doğan

https://doi.org/10.35193/bseufbd.723358

Öz

Bu çalışmada krom(III) oksit (Cr2O3) nanoyapıları flor katkılı kalay oksit (FTO) kaplı cam elektrot yüzeyinde elektrokimyasal teknik kullanılarak sentezlenmiştir. Elektrolit çözeltisi olarak CrCl3 içeren ortamda öncelikle krom oksihidroksit türleri oluşturulmuş ve sonrasında ısıl işlem uygulanarak oksit formuna dönüşüm sağlanmıştır. Elektrokimyasal sentez üzerine indirgenme potansiyeli ve depozisyon süresinin etkisi incelenmiştir. Elektrokimyasal olarak biriktirilen Cr2O3 nanoyapılarının karakterizasyonu XRD, SEM ve EDS teknikleri kullanılarak gerçekleştirilmiştir. -1,4 V sabit potansiyelde hazırlanan Cr2O3 nanoyapılarının XRD spektrumunda Cr2O3’in (110) düzlemine ait kırınım piki elde edilmiştir. EDS spektrumu ise elementel olarak oldukça saf Cr2O3 nanoyapılarının sentezlendiğini desteklemiştir.

Anahtar Kelimeler

Elektrokimyasal Biriktirm, Flor Katkılı Kalay Oksit, Krom Oksit, Nanoyapı

Teşekkür

Bu çalışmanın gerçekleştirilmesinde laboratuvar alt yapısının kullanılmasına izin verdiği için Atatürk Üniversitesi Fen Fakültesi Dekanlığı’na teşekkür ederiz. Sentezlenen elektrotların karakterizasyonlarının yapılması için desteklerini esirgemeyen Atatürk Üniversitesi Doğu Anadolu Yüksek Teknoloji Araştırma Merkezi’ne de (DAYTAM) teşekkürlerimizi sunarız.

Electrochemical Synthesis and Characterization of Cr2O3 Nanostructures

Öz

In this study, chromium (III) oxide (Cr2O3) nanostructures were synthesized using electrochemical technique on the surface of the fluorine-doped tin oxide (FTO) coated glass electrode. Firstly, chromium oxyhydroxide species were created in the aqueous electrolyte solution containing CrCl3, and then thermal annealing was applied to convert to oxide form. The effect of reduction potential and deposition time on electrochemical synthesis was investigated. The characterization of electrochemically deposited Cr2O3 nanostructures was carried out using XRD, SEM and EDS techniques. The diffraction peak of the Cr2O3 (110) plane was obtained in the XRD spectrum of Cr2O3 nanostructures prepared at -1,4 V constant potential. The EDS spectrum supported that elementally highly pure Cr2O3 nanostructures were synthesized.

Anahtar Kelimeler

Electrochemical Deposition, F-Doped Tin Oxide, Chromium Oxide, Nanostructure

Kaynakça

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