630 shared publications
Technology Center of Yunnan Tobacco Industry Co., Ltd
341 shared publications
Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
320 shared publications
Department of Electrical Engineering, Indian Institute of Technology Kanpur, KANPUR 208016, India
316 shared publications
Department of Medical Sciences, University of Turin, Turin, Italy
208 shared publications
Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
(2006 - 2018)
Chlorinated volatile organic compounds (VOCs), such as perchloroethylene (PCE), are widely used as industrial solvents in the dry cleaning, degreasing of metals, and plastics industries. As a result, these compounds are widely introduced into the air and water and contaminate them. Due to the toxicity and high volatility of these compounds and because they are suspected of being carcinogenic to humans and are extremely stable in the environment, their removal from water or air seems essential.
Photocatalytic oxidation is a special form of advanced oxidation, often used as a semiconductor solid, such as TiO2 and ultraviolet (UV) to activate it. Basically, the reactions that are catalyzed by TiO2 are also performed with other semiconductor photocatalytic agents. However, some of these photocatalytic agents are self-indulging and inactivated, are readily available or are susceptible to conventional organic and inorganic solvents. But the use of TiO2 has been very interesting due to its unique properties.
In this study, the photocatalytic removal of perchloroethylene was investigated by a filled glass-bead reactor. Also, the effect of relative humidity, residence time, concentration and ultraviolet light on the photocatalytic removal process was investigated.
In this study, the photocatalytic effect of ultraviolet light and photocatalyst TiO2 was compared, with reaction conditions, 1 min, 3000 ppm concentration and relative humidity of 30%, and the photocatalyst TiO2 had a higher removal capacity than ultraviolet light.
Tungsten oxide (WO3) nanoparticles have been synthesized by a simple precipitation method and utilized as photocatalyst for degradation of methylene blue (MB) dye under LED-visible light irradiation. This photocatalyst was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and UV-visible spectroscopy to determine phase, morphology, vibration mode, and optical property.