Fabrication, characterization and photocatalytic properties of CdS nanoparticles modified by N-doped TiO2 NTs

• Autorzy: Gao D. , Wang C. , Jian Y. , Li W. , Dong P.

Identyfikatory

DOI

10.2478/msp-2018-0053

• Języki publikacji: EN

Abstrakty

EN

Highly ordered TiO₂ nanotube arrays (TiO₂ NTs) were prepared by anodic oxidizing method on a surface of Ti substrate. Fabrication of nitrogen-doped TiO₂ nanotube arrays (N-TiO₂ NTs) was carried out by immersion in ammonia solution. CdS nanoparticles loaded N-doped TiO₂ nanotube arrays (CdS/N-TiO₂ NTs) were obtained by successive ionic layer adsorption and reaction (SILAR) technique. The samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), photoluminescence (PL) emission spectra and ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy (DRS). The results indicate that the TiO₂ nanotube diameter and wall thickness are 100 nm to 120 nm and 20 nm to 30 nm, respectively. Moreover, the morphology and structure of the highly ordered TiO₂ NTs are not affected by N-doping. Furthermore, CdS nanoparticles are evenly distributed on the surface of TiO₂ NTs. Finally, the photocatalytic activity of CdS/N-TiO₂ NTs was evaluated by degradation of MO under visible-light irradiation. Compared with TiO₂ NTs, N-TiO₂ NTs, CdS/N-TiO₂ NTs exhibited enhanced photocatalytic properties, and the highest degradation rate of CdS/N-TiO₂NTs could reach 97.6 % after 90 min of irradiation.

Słowa kluczowe

EN

TiO2 nanotube arrays; N dopants; CdS nanoparticles; visible light; photocatalysis

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2018
• Tom: Vol. 36, No. 3
• Strony: 348--353
• Opis fizyczny: Bibliogr. 33 poz., rys.

Twórcy

autor

Gao D.

• College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng 224051, P.R. China

autor

Wang C.

• College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng 224051, P.R. China

autor

Jian Y.

• College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng 224051, P.R. China

autor

Li W.

• College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng 224051, P.R. China

autor

Dong P.

• Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, P.R. China

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