Effect of WO3 on the morphology and photodegradation of dimethyl phthalate of TiO2 nanotube array photoelectrode

• Autorzy: Xin Y. , Wang G. , Liu Y. , Zang Z. , Gao M.

Identyfikatory

DOI

10.5277/epe180309

• Języki publikacji: EN

Abstrakty

EN

WO₃ modified TiO₂ nanotube array (WO₃/TNAs) photoelectrodes were fabricated via electrochemical deposition on TNAs/Ti photoelectrodes. The morphology and structure of WO₃/TNAs photoelectrodes were investigated by scanning electron microscopy (SEM) and X-ray diffractometer (XRD). The effects of deposition potential, deposition duration, Na<sub<2</sub>WO₄ concentration, and calcination temperature on the morphology and the photocatalytic activity were investigated. The results showed that suitable amounts of WO₃ promoted the photocatalytic activity of TNAs photoelectrodes for the degradation of dimethyl phthalate (DMP). The optimal conditions for the fabrication of WO₃/TNAs photoelectrodes were as follows: deposition voltage 3.0 V, 10 min deposition duration, 0.01 mol/dm³ Na₂WO₄ concentration, 1.5 cm electrode gap, and 550 °C annealing temperature. The degradation rate of DMP reached 77% after 60 min of illumination by WO₃/TNAs photoelectrode. Additionally, WO₃/TNA photoelectrodes possessed superb stability for maintaining a high DMP degradation efficiency at more than 75% after 10 times of successive use with 60 min irradiation for each cycle. The enhancement of photocatalytic performance by the efficient combination of WO₃ with TNAs would provide a theoretical basis for the practical application of WO₃/TNA photoelectrodes in water treatment.

Słowa kluczowe

EN

degradation; esters; morphology; scanning electron microscopy; tungsten; water treatment

PL

degradacja; estry; morfologia; skaningowa mikroskopia elektronowa; wolfram; oczyszczalnia ścieków

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2018
• Tom: Vol. 44, nr 3
• Strony: 129--139
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Xin Y.

• The Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266003, China
• Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultura1 University, Qingdao 266109, China

autor

Wang G.

• Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultura1 University, Qingdao 266109, China

autor

Liu Y.

• College of Science and Information, Qingdao Agricultura1 University, Qingdao 266109, China

autor

Zang Z.

• Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultura1 University, Qingdao 266109, China

autor

Gao M.

• The Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266003, China

Bibliografia

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