نتایج جستجو برای: s photocatalyst

تعداد نتایج: 714812  

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: :iranian journal of chemistry and chemical engineering (ijcce) 2014
simin janitabar darzi maryam movahedi

zno and tio2 nanoparticles wereimpregnated with merbromin dye and used as modified photocatalysts for degradation of phenol. dye-modified zno and tio2 showed significantly higher photocatalytic activity than neat zno and tio2 under visible light illumination. moreover, the prepared dye-modified zno showed superior photocatalytic efficiency in degradation of phenol compared to the dye-modified t...

Journal: :international journal of nano dimension 0
f. oshani department of engineering, islamic azad university, north branch, tehran, iran. s. rasouli department of nanomaterials and nanotechnology, institute for color science and technology. r. marandi department of engineering, islamic azad university, north branch, tehran, iran. m. keramati farhoud department of nanomaterials and nanotechnology, institute for color science and technology.

in this paper, a modified sol-gel method using peroxotitanic acid sol (pta) was applied for the preparation of tio2 nanostructured thin films on glass plates. the peroxotitanic acid sol was synthesized using titanium isopropoxide, isopropylalchol, h2o and hydrogen peroxide. tio2 films were then calcined at 500oc and characterized by x-ray diffraction (xrd) and scanning electron microscopy (sem)...

Journal: :Chemical communications 2013
Atsuhiro Tanaka Yuri Nishino Satoshi Sakaguchi Takayuki Yoshikawa Kazuya Imamura Keiji Hashimoto Hiroshi Kominami

A functionalized plasmonic Au/TiO2 photocatalyst with an Ag co-catalyst was successfully prepared by the combination of two types of photodeposition methods, and it quantitatively converted nitrobenzene and 2-propanol to aniline and acetone under irradiation of visible light.

2016
Yoshihiko Imanaka Toshihisa Anazawa Toshio Manabe Hideyuki Amada Sachio Ido Fumiaki Kumasaka Naoki Awaji Gabriel Sánchez-Santolino Ryo Ishikawa Yuichi Ikuhara

The artificial photosynthesis technology known as the Honda-Fujishima effect, which produces oxygen and hydrogen or organic energy from sunlight, water, and carbon dioxide, is an effective energy and environmental technology. The key component for the higher efficiency of this reaction system is the anode electrode, generally composed of a photocatalyst formed on a glass substrate from electric...

2010
Ayan Majumder Malay Chaudhuri

In a laboratory study, the effectiveness of combined tartrate and citrate as photocatalyst in solar photocatalytic oxidation and removal of arsenic from ground water was studied and a method, using a naturally occurring tartrate-citrate photocatalyst that can be used at the household level to treat small quantities of drinking water was developed. Kinetic tests performed with 250 μg/L As(III)-s...

Journal: :Chemical communications 2013
Song Guo Hongli Zhang Ling Huang Zhendong Guo Guang Xiong Jianzhang Zhao

Iodo-Bodipy immobilized on porous silica was used as an efficient recyclable photocatalyst for photoredox catalytic tandem oxidation-[3+2] cycloaddition reactions of tetrahydroisoquinoline with N-phenylmaleimides to prepare pyrrolo[2,1-a]isoquinoline.

Journal: :Chemical communications 2011
Katsuya Shimura Hiromasa Kawai Tomoko Yoshida Hisao Yoshida

Photodeposition of a Rh cocatalyst under atmospheric conditions could simultaneously provide both Rh metal and oxide nanoparticles on a K(2)Ti(6)O(13) photocatalyst, both of which cooperatively promoted the photocatalytic hydrogen production from water and methane.

Journal: :Chemical communications 2009
Dieqing Zhang Guisheng Li Xianfeng Yang Jimmy C Yu

A micro-sheet anatase TiO(2) single crystal photocatalyst with a remarkable 80% level of reactive {001} facets was synthesized via a microwave-assisted hydrothermal route involving titanium tetrafluoride and a tetrafluoroborate-based ionic liquid.

Journal: :Chemical communications 2012
Shicheng Yan He Yu Nanyan Wang Zhaosheng Li Zhigang Zou

Considering light absorption by narrowing the band gap and gas capture by the mesostructure and basicity of material, an efficient artificial photosynthesis system was constructed based on a mesoporous ZnAl(2)O(4)-modified ZnGaNO photocatalyst.

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