نتایج جستجو برای: Photocatalyst

تعداد نتایج: 4105  

2017
Hideharu Shintani

Copyright: © 2014 Shintani H. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The photocatalyst equipment consists of a titanium dioxlde (TiO2) plate and an ultraviolet lamp. The authors studied if the photoca...

Journal: :Chemical communications 2015
Jiasheng Xu Chengsi Pan Tsuyoshi Takata Kazunari Domen

Overall water splitting was achieved on a simple perovskite oxynitride photocatalyst, CaTaO2N, with an absorption edge at 510 nm. This photocatalyst, modified with a Rh-Cr bimetallic oxide cocatalyst, produced stoichiometric H2 and O2 steadily under UV and visible light irradiation after coating of the photocatalyst particles with amorphous Ti oxyhydroxide.

Journal: :Dental materials journal 2011
Masayuki Uchimaru Takako Sakai Ryoji Moroi Susumu Shiota Yukie Shibata Mikito Deguchi Hidetaka Sakai Yoshihisa Yamashita Yoshihiro Terada

This study examined the antimicrobial/antifungal ability of a tissue conditioner containing a photocatalyst for Escherichia coli, Streptococcus mutans, Staphylococcus aureus and Candida albicans. The photocatalyst was mixed with tissue conditioners powders at concentrations of 0, 10, 15, and 20 wt%. Tissue conditioners powders containing a photocatalyst were mixed with liquid to make test speci...

2014
Safi Asim Bin Asif Sher Bahadar Khan Abdullah M Asiri

A Co3O4/Fe2O3 composite nanofiber-based solar photocatalyst has been prepared, and its catalytic performance was evaluated by degrading acridine orange (AO) and brilliant cresyl blue (BCB) beneath solar light. The morphological and physiochemical structure of the synthesized solar photocatalyst was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-...

2008
Peter Ševčík Tomáš Mackuľak Petra Olejníková Gabriel Čík

A new heterogeneous photocatalyst was prepared by incorporation of methylene blue into ZSM-5 zeolite. This photocatalyst effectively absorbs light in visible range of the spectrum and when irradiated with visible light, it generates reactive oxygen species (ROS) in aqueous environment. Efficiency of the photocatalyst was tested on dechlorination of a model compound 4-chlorophenol and on growth ...

Journal: :Nanoscale 2010
Dagui Chen Feng Huang Guoqiang Ren Dongsong Li Meng Zheng Yongjing Wang Zhang Lin

An "infinite recycling" method for enhancing the durable applications of a ZnS nano-photocatalyst is shown. Based on the finding of thermodynamic stable nanophase of ZnS, we designed a strategy in which the deactivated ZnS nano-photocatalyst could be recovered into its original state. This ZnS photocatalyst can be used repeatedly without being released into environment as nano-waste. The strate...

2015
Bin Wang Maochang Liu Zhaohui Zhou Liejin Guo

Pt nanoparticles with tunable size are prepared on the entire surface of facet-engineered Cu2WS4 decahedral photocatalyst via a kinetic-controlled chemical reduction process. The {101} facets of the photocatalyst which featured photo-oxidation, are successfully activated for photoreduction by Pt. The resulting photocatalyst shows an activity nine times higher compared to that of the only {001}-...

Journal: :Water research 2010
Ani Idris Nursia Hassan Nur Suriani Mohd Ismail Effaliza Misran Noordin Mohd Yusof Audrey-Flore Ngomsik Agnes Bee

Magnetically separable photocatalyst beads containing nano-sized iron oxide in alginate polymer were prepared. This magnetic photocatalyst beads are used in slurry-type reactors. The magnetism of the catalyst arises from the nanostructured particles gamma-Fe(2)O(3), by which the catalyst can be easily recovered by the application of an external magnetic field. These synthesized beads are sunlig...

Journal: :Chemical communications 2005
Andrew Mills Jishun Wang Soo-Keun Lee Morten Simonsen

An ink is described which, when printed or coated onto a photocatalyst film, changes colour irreversibly and rapidly upon UV activation of the photocatalyst film and at a rate commensurate with its activity.

2012
Rahmatollah Rahimi Mahboubeh Rabbani Samaneh Safalou Moghaddam

In this study, N, Scodoped titania photocatalyst was synthesized through an efficient and straight forward method using a single source, ammonium sulfate, as modification agent of titanium isopropoxide (TTIP) precursor. The catalyst was characterized by X-ray powder diffractometer (XRD), element Analysis of carbon, hydrogen, nitrogen (CHN), scanning electron microscopy (SEM), diffuse reflectanc...

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