نتایج جستجو برای: photocatalytic oxidation

تعداد نتایج: 131504  

Journal: :Journal of the American Chemical Society 2011
Hiroaki Kotani Tomoyoshi Suenobu Yong-Min Lee Wonwoo Nam Shunichi Fukuzumi

The photocatalytic formation of a non-heme oxoiron(IV) complex, [(N4Py)Fe(IV)(O)](2+) [N4Py = N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine], efficiently proceeds via electron transfer from the excited state of a ruthenium complex, [Ru(II)(bpy)(3)](2+)* (bpy = 2,2'-bipyridine) to [Co(III)(NH(3))(5)Cl](2+) and stepwise electron-transfer oxidation of [(N4Py)Fe(II)](2+) with 2 equiv of [Ru(...

2014
Johannes Tucher Carsten Streb

The visible light photooxidative performance of a new high-nuclearity molecular bismuth vanadium oxide cluster, H3[{Bi(dmso)3}4V13O40], is reported. Photocatalytic activity studies show faster reaction kinetics under anaerobic conditions, suggesting an oxygen-dependent quenching of the photoexcited cluster species. Further mechanistic analysis shows that the reaction proceeds via the intermedia...

2014
Veronica Camargo Elba Ortiz Hugo Solis Carlos M. Cortes-Romero Sandra Loera-Serna Carlos J. Perez

The experimental degradation of a water soluble dye, potassium indigo tetrasulfonate salt, has been studied using stand-alone ozonation and photocatalytic oxidation process. Progress of the dye oxidation was followed by UV-VIS spectrophotometric measurements at controlled operating conditions. The organic content of reaction samples was measured to verify the process efficiency in dye mineraliz...

2016
Rajendra C. Pawar Suhee Kang Jung Hyun Park Jong-ho Kim Sunghoon Ahn Caroline S. Lee

A one-dimensional (1D) nanostructure having a porous network is an exceptional photocatalytic material to generate hydrogen (H2) and decontaminate wastewater using solar energy. In this report, we synthesized nanoporous 1D microrods of graphitic carbon nitride (g-C3N4) via a facile and template-free chemical approach at room temperature. The use of concentrated acids induced etching and lift-of...

Journal: :Molecules 2012
Yunjun Yang Jingfei Luan

A novel polyaniline/Bi(2)SnTiO(7 )composite polymer was synthesized by chemical oxidation in-situ polymerization method and sol-gel method for the first time. The structural properties of novel polyaniline/Bi(2)SnTiO(7) have been characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and X-ray spectrometry. The lattice parameter of Bi(2)SnTiO(7) was f...

Journal: :Chemosphere 2010
Lei Sun Guiying Li Shungang Wan Taicheng An

Photocatalytic oxidation is a promising technique for the degradation of volatile organic compounds. However, it is necessary to clarify the genotoxicity mutagenic potential of intermediates formed during photocatalytic degradation. A gas-solid TiO(2) thin film reactor was fabricated to degrade toluene under UV irradiation. The results showed that the degradation efficiencies of toluene at a co...

Journal: :Dalton transactions 2014
Fan Dong Qiuyan Li Ying Zhou Yanjun Sun Haidong Zhang Zhongbiao Wu

Novel plasmonic 0D Ag nanocrystal decorated 3D (BiO)2CO3 hierarchical microspheres were fabricated with a one-pot hydrothermal method. The as-prepared samples were systematically characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N2 adsorption-desorption isotherms, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, photolu...

Journal: :Ultrasonics sonochemistry 2017
Joon Yeob Lee Wan-Kuen Jo

In this study, an ultrasound-aided hydrothermal-impregnation method was used to synthesize three-dimensional (3D) urchin-like CdS-TiO2 nanostructures (UCTs) with variable CdS content. The photocatalytic efficiencies (for degrading limonene and toluene vapor) of UCTs synthesized using the ultrasound-aided process were greater than those of UCTs fabricated without ultrasound treatment. In additio...

Journal: :Journal of hazardous materials 2007
Jiaqing Li Lei Zheng Luoping Li Yuezhong Xian Litong Jin

A TiO2/Ti mesh electrode by laser calcination was prepared in this article. The resulting TiO2 film was investigated by X-ray diffraction (XRD), atomic force microscopy (AFM) and electrochemical impedance spectroscopy (EIS), and it illuminated that the prepared electrode mainly consisted of anatase TiO2 nanoparticles on its surface and exhibited a superior photocatalytic activity. The photodegr...

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