Photocatalytic removal of benzene over Ti3C2Tx MXene and TiO2–MXene composite materials under solar and NIR irradiation

Author(s):  
Sergii A. Sergiienko ◽  
David M. Tobaldi ◽  
Luc Lajaunie ◽  
Daniela V. Lopes ◽  
Gabriel Constantinescu ◽  
...  

The TiO2/MXene composites prepared by different routes were assessed towards the degradation of organic pollutants under simulated solar light. A notable photocatalytic activity of bare MXene under near infra-red light was discovered.

2012 ◽  
Vol 509 ◽  
pp. 259-265
Author(s):  
Hao Xie ◽  
Tao Zeng ◽  
Xue Lai Wang ◽  
Xiu Jian Zhao

Three-dimensionally (3D) ordered macroporous ZnO film was fabricated on a glass slide by layer-by-layer depositing and hydrolysis of Zn(CH3COO)2using 3D-ordered latex film as template followed by calcination at 450 °C for 2 h to remove the organic template. The as-prepared 3D-ordered macroporous ZnO film was characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), diffusive reflectance UV-visible absorption spectra (DRUV-VIS), photoluminescence (PL), and photoelectrochemical measurement. Its photocatalytic activity was evaluated by the photocatalytic degradation of crystal violet (CV) aqueous solution at ambient temperature under the irradiation of simulated solar light. It was found that the 3D-ordered ZnO film exhibits efficient photocatalytic activity for photodegradation of CV under the irradiation of simulated solar light.


2015 ◽  
Vol 3 (34) ◽  
pp. 17858-17865 ◽  
Author(s):  
Xiaohong Hu ◽  
Qi Zhu ◽  
Xinlong Wang ◽  
Naoki Kawazoe ◽  
Yingnan Yang

P/Ag/Ag2O/Ag3PO4/TiO2 composite photocatalyst has been successfully prepared by a sol–gel method. It shows highly enhanced photocatalytic ability and stability under simulated solar light irradiation.


2013 ◽  
Vol 807-809 ◽  
pp. 557-561 ◽  
Author(s):  
Wen Tao Yi ◽  
Chun Yan Yan ◽  
Peng Yan ◽  
Shu Yin Liu

AgCl-TiO2 nanocomposites with a core-shell structure were successfully prepared by hydrothermal treatment. And the products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Brunauer Emmett teller (BET) Analysis, and UV-vis diffuse reflectance spectroscopy (DRS). It is found that the composites consist of anatase TiO2 and cubic phase AgCl, which has higher surface area, stronger spectral response in visible region compared with pure TiO2. The photocatalytic activity of these samples was evaluated by photocatalytic decoloration of methyl orange (MO) under simulated solar light. The results show AgCl-TiO2 composite has much higher photocatalytic activity than that of pure TiO2, and it also has very good stability. The kinetic study showed that this photocatalytic process coincided with the Langmuir-Hinshelwood (L-H) pseudo first order reaction model.


2013 ◽  
Vol 224 ◽  
pp. 32-38 ◽  
Author(s):  
Maria J. Sampaio ◽  
Cláudia G. Silva ◽  
Adrián M.T. Silva ◽  
Vitor J.P. Vilar ◽  
Rui A.R. Boaventura ◽  
...  

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