Green preparation of Carbon Quantum dots using Gingko biloba to sensitize TiO2 for the photohydrogen production
Yükleniyor...
Dosyalar
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCI LTD
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Carbon Quantum dots (CQDs) were obtained from Gingko biloba by using microwave technique, which is easy, time-saving, cost-effective, non-toxic and environmental friendly way. TiO2 were sensitized by green-prepared CQDs to obtain CQDs/TiO2 composite. The characterizations of the CQDs and CQDs/TiO2 were performed by Transmission Electron Microscopy (TEM), high-resolution TEM (HR-TEM), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopic (XPS), Photoluminescence (PL) and Fourier Transformed Infrared (FT-IR) spectroscopy. The photocatalytic hydrogen evolution activity of CQDs/TiO2 system was studied under visible light (lambda > 420 nm) irradiation in the aqueous solution by using triethanolamine (TEOA) as a sacrificial electron donor. When Pt was used as a co-catalyst, CQDs/TiO2/Pt exhibited improved hydrogen evolution rate (1502 mu mol h(-1)g(-1)) compared to CQDs/TiO2 composite (665 mu mol h(-1)g(-1)).
Açıklama
Anahtar Kelimeler
Carbon quantum dots, Photocatalytic hydrogen evolution, TiO2, Gingko biloba
Kaynak
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
WoS Q DeÄŸeri
Q1
Scopus Q DeÄŸeri
Q1
Cilt
109
Sayı
Künye
Genc, M. T., Yanalak, G., Arslan, G., Patir, I. H. (2020). Green Preparation of Carbon Quantum Dots Using Gingko Biloba to Sensitize TiO2 for the Photohydrogen Production. Materials Science in Semiconductor Processing, 109, 1-7.
