نتایج جستجو برای: photocatalytic studies

تعداد نتایج: 1441270  

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2007
C Li X Z Li

In this study, the degradation of bisphenol A in aqueous suspension by interaction of photocatalytic oxidation and ferrate(VI) oxidation was investigated under different conditions. The results indicate that the formation of Fe(V) and Fe(IV) is in the photocatalytic reduction of Fe(VI) by electron (ecb-) on the surface of TiO2. The oxidation efficiency of the photocatalytic oxidation in the pre...

Journal: :Chemical communications 2013
Junqing Yan Guangjun Wu Naijia Guan Landong Li

Under UV-visible light irradiation, multiple synergetic promotion effects on the photocatalytic activity of TiO2 by gold deposition can be observed, and plasmonic Au/TiO2 shows great potential for photocatalytic solar conversion.

Journal: :Dalton transactions 2014
Deli Jiang Linlin Chen Jimin Xie Min Chen

Without Pt as cocatalyst, the photocatalytic hydrogen evolution activity of graphitic carbon nitride (g-C3N4) or even its composite is normally rather low (<1 μmol h(-1)). Exploring Pt-free cocatalysts to substitute precious Pt is of great importance in the photocatalytic field. In the present work, Ag2S-modified g-C3N4 (Ag2S/g-C3N4) composite photocatalysts were prepared via a simple precipita...

Journal: :advances in environmental technology 0
mohsen mehdipour ghazi faculty of chemical, petroleum, and gas engineering, semnan university, semnan, 35131-19111, iran fatemeh azhdari faculty of chemical, petroleum and gas engineering, semnan university, semnan, 35131-19111, iran.

the magnetic and recyclable nanoparticles of cofe2o4 were synthesized by a reverse co-precipitation process. sonication was used to couple the cofe2o4 surface with ag2o. the characteristics and optical properties of the catalyst were studied by powder x-ray diffraction, uv–visible reflectance spectroscopy and scanning electron microscopy analyses. pure cofe2o4 and cofe2o4/ag2o were utilized to ...

Journal: :Dalton transactions 2017
Peng Huang Hai-Yang Wu Min Huang Meng Du Chao Qin Xin-Long Wang Zhong-Min Su

An unprecedented polytantalotungstate (POTT), Cs12.5K4.5H[Ta12Si4W37O158]·25H2O (1), based on the {SiW9Ta3O40}7- cluster was hydrothermally synthesized. A photocatalytic study revealed that 1 exhibits significant photocatalytic water splitting activity.

2011
Rengasamy Velmurugan Bojja Sreedhar Meenakshisundaram Swaminathan

The AgBr loaded TiO2 catalyst was prepared by a feasible approach with AgBr and tetraisopropyl orthotitanate and characterized by BET surface area measurement, diffuse reflectance spectra (DRS), scanning electron microscope (SEM), energy dispersive spectra (EDS), X-ray diffraction (XRD), transmission electron microscope (TEM) and atomic force microscope (AFM) analysis. The results of characteri...

Journal: :Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan 2009
Tsutomu Hirakawa Nobuaki Mera Taizo Sano Nobuaki Negishi Koji Takeuchi

Photocatalysis has been widely applied to solar-energy conversion and environmental purification. Photocatalyst, typically titanium dioxide (TiO(2)), produces active oxygen species under irradiation of ultraviolet light, and can decompose not only conventional pollutants but also different types of hazardous substances at mild conditions. We have recently started the study of photocatalytic dec...

2012
Ibram Ganesh A. K. Gupta P. P. Kumar P. S. C. Sekhar K. Radha G. Padmanabham G. Sundararajan

Different amounts of Ni-doped TiO(2) (Ni = 0.1 to 10%) powders and thin films were prepared by following a conventional coprecipitation and sol-gel dip coating techniques, respectively, at 400 to 800°C, and were thoroughly characterized by means of XRD, FT-IR, FT-Raman, DRS, UV-visible, BET surface area, zeta potential, flat band potential, and photocurrent measurement techniques. Photocatalyti...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2015
Neerugatti KrishnaRao Eswar Praveen Chandrashekarapura Ramamurthy Giridhar Madras

This study demonstrates the synthesis of TiO2 nanobelts using solution combustion derived TiO2 with enhanced photocatalytic activity for dye degradation and bacterial inactivation. Hydrothermal treatment of combustion synthesized TiO2 resulted in unique partially etched TiO2 nanobelts and Ag3PO4 was decorated using the co-precipitation method. The catalyst particles were characterized using X-r...

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