Kinetics of photoelectrocatalytic degradation of diclofenac using N, S co-doped TiO2 nano-crystallite decorated TiO2 nanotube arrays photoelectrode

• Autorzy: Cui Y. , Deng X. , Ma Q. , Zhang H. , Cheng X. , Li X. , Xie M. , Cheng Q. , Li B.

Identyfikatory

DOI

10.5277/epe180208

• Języki publikacji: EN

Abstrakty

EN

As a non-steroidal anti-inflammatory drug, diclofenac, was commonly used as analgesic, antiarthritic and antirheumatic, and has frequently been detected in municipal wastewater treatment plants (MWTPs) effluents and demonstrated to be potentially environmental risk on human beings. In the present study, N, S co-doped TiO₂ nano-crystallites decorated TiO₂ nano-tube arrays (N, S-TiO₂ NCs/TiO₂ NTAs) photoelectrode was used to degrade diclofenac containing wastewater. In addition, the effects of some critical parameters including initial pH, external positive potential, sodium sulfate concentration and initial diclofenac concentration on the photoelectrocatalytic (PEC) degradation of diclofenac containing wastewater and dynamic characteristics were investigated systematically. Results showed that N, S-TiO₂ NCs/TiO₂ NTAs photoelectrode exhibited high PEC efficiency for the degradation of diclofenac, in which the PEC processes fitted well with the Langmuir–Hinshelwood (L–H) model. Furthermore, external additional anions such as Cl^–, ClO^– and NO₃ – played an important role in inhibiting the degradation of diclofenac. Also, the N, S-TiO₂ NCs/TiO₂ NTAs photoelectrode possessed good stability for consecutive applications for degradation of diclofenac, which could potentially be utilized in wastewater treatment.

Słowa kluczowe

EN

effluents; nanotubes; sodium sulfate; sulfur compounds; yarn; photoelectrocatalytic degradation

PL

ścieki; nanorurki; siarczan sodu; związki siarki; przędza

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2018
• Tom: Vol. 44, nr 2
• Strony: 117--130
• Opis fizyczny: Bibliogr. 27 poz., tab., rys.

Twórcy

autor

Cui Y.

• Key Laboratory of Western China’s Environmental Systems (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730 000, P.R. China

autor

Deng X.

• Key Laboratory of Western China’s Environmental Systems (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730 000, P.R. China

autor

Ma Q.

• Key Laboratory of Western China’s Environmental Systems (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730 000, P.R. China

autor

Zhang H.

• Key Laboratory of Western China’s Environmental Systems (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730 000, P.R. China

autor

Cheng X.

• Key Laboratory of Western China’s Environmental Systems (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730 000, P.R. China
• Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials (CEM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Sciences and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, P.R. China
• Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lake, Chinese Academy of Sciences, Xinning Road 18, Chengxi District, Xining 810 008, P.R. China
• State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Dingxi Road, Changning District, Shanghai 200050, P.R. China

autor

Li X.

• Key Laboratory of Western China’s Environmental Systems (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730 000, P.R. China

autor

Xie M.

• Key Laboratory of Western China’s Environmental Systems (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730 000, P.R. China

autor

Cheng Q.

• College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, P.R. China

autor

Li B.

• Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lake, Chinese Academy of Sciences, Xinning Road 18, Chengxi District, Xining 810 008, P.R. China.

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