MoS2 ile dekore edilmiş TiO2 Nanotüp Elektrotların Sentezi, Karakterizasyonu ve Fotoelektrokimyasal Özellikleri

Yıl 2021, Cilt: 16 Sayı: 1, 279 - 286, 27.05.2021

Burcu Bozkurt Çırak , Çiğdem Eden

https://doi.org/10.29233/sdufeffd.926533

Öz

Bu araştırmada, TiO₂/MoS₂ nanokompozit elektrotlar fotoelektrokimyasal performanslarını araştırmak için sentezlenmiştir. İlk olarak, Ti folyo üzerinde anodik oksidasyonla TiO₂ nanotüp dizileri üretilmiştir. Daha sonra; MoS₂ nano yapıları, TiO₂ nanotüpler üzerinde hidrotermal yöntemle sentezlenmiştir. Hazırlanan nanokompozit elektrotlar, X-Ray kırınımı (XRD) ve alan emisyonu taramalı elektron mikroskobu (FESEM) kullanılarak karakterize edilmiştir. Geçici foto-akım tepkisi, elektrotların fotoelektrokimyasal aktivitesini araştırmak için analiz edilmiştir. Elde edilen sonuçlar, TiO₂ nanotüp dizileri etrafına MoS₂ nanoyapılar ile homojen bir şekilde kaplandığı belirlenmiştir. Ayrıca, TiO₂/MoS₂ yapıların TiO₂ elektrota göre daha iyi fotoelektrokimyal aktivite gösterdiği belirlenmiştir.

Anahtar Kelimeler

TiO2 nanotüp, Anodizasyon, Foto-akım, Hidrotermal

Synthesis, Characterization and Photoelectrochemical Properties of MoS2 decorated TiO2 Nanotubes Electrodes

Öz

In this research, TiO₂/MoS₂ nanocomposite electrodes were synthesized to investigate the photoelectrochemical performances. Firstly, TiO₂ nanotubes were fabricated by anodic oxidation on Ti foil. Then, MoS₂ nanostructures were synthesis by hydrothermal method on TiO₂ nanotubes. The prepared nanocomposite films were characterized by using X-Ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The transient photocurrent response was analyzed to investigate photoelectrochemical activity of electrodes. The results show that TiO₂ nanotube arrays coated with MoS₂ nanostructure homogeneously. Furthermore, TiO₂/MoS₂ nanocomposite electrode were shown better photoelectrochemical activity then bare TiO₂ electrode.

Anahtar Kelimeler

TiO2 nanotubes, Anodization, Photocurrent, Hydrothermal

Kaynakça

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