Experimental study for adsorption and photocatalytic reaction of ethyl methylphosphonate molecule as organophosphorus compound adsorbed at surface of titanium dioxide under UV irradiation in ambient condition

Authors have successfully synthesized a new environmental catalysis which reacted with harmful formaldehyde in air at room temperature. Although manganese oxide is practically used for a major ingredient of formaldehyde removing materials, intermediates such as formate formed on the surface reduced the removal efficiency. Then, manganese oxide was photodeposited onto the surface of titanium dioxide particles which could decompose certain organic compounds with UV irradiation. It was confirmed that the complex oxide decomposed formaldehyde into carbon dioxide at room temperature. Moreover, UV irradiation enhanced the production of the carbon dioxide.

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Effects of Silica-Coating on the Photoinduced Hole Formation and Decomposition Activity of Titanium Dioxide Photocatalysts Under UV Irradiation

Catalysis Letters ◽

10.1007/s10562-012-0914-1 ◽

2012 ◽

Vol 142 (12) ◽

pp. 1474-1481 ◽

Cited By ~ 10

Author(s):

Junichi Oguma ◽

Yusuke Kakuma ◽

Masami Nishikawa ◽

Yoshio Nosaka

Keyword(s):

Titanium Dioxide ◽

Uv Irradiation ◽

Silica Coating ◽

Hole Formation

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(9) the oxidation rate of organic compounds is fast when large amount of ferrous ions are present because large amount of hydroxyl radicals are produced. However, the Fenton reaction may slow down due to the slow ferrous ion production. In previous studies, the photocatalytic degradation of dichlorvos (DDVP. an insecticide) on glass supported titanium dioxide was investigated. Results indicate that photocatalysis can be an effective process for the degradation of dichlorvos [3]. The mineralization of dichlorvos and the reduction of toxicity were investigated via the photocatalytic reaction [4]. This study uses Fenton’s reagent, ferrous ions/hydrogen peroxide, to oxidize dichlorvos with an attempt to explore the behavior of dichlorvos oxidation and how factors such as pH, [H O ],

Hazardous and Industrial Waste Proceedings, 30th Mid-Atlantic Conference ◽

10.1201/9781498709453-151 ◽

2014 ◽

pp. 920-921

Keyword(s):

Hydrogen Peroxide ◽

Titanium Dioxide ◽

Photocatalytic Degradation ◽

Organic Compounds ◽

Hydroxyl Radicals ◽

Oxidation Rate ◽

Ferrous Ion ◽

Photocatalytic Reaction ◽

Ferrous Ions ◽

Ion Production

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Experimental Study of the Photocatalytic Degradation of Formaldehyde in Indoor Air using a Nano-particulate Titanium Dioxide Photocatalyst

Indoor and Built Environment ◽

10.1177/1420326x07083513 ◽

2007 ◽

Vol 16 (6) ◽

pp. 529-537 ◽

Cited By ~ 39

Author(s):

Huili Yu ◽

Kaili Zhang ◽

Carole Rossi

Keyword(s):

Experimental Study ◽

Titanium Dioxide ◽

Photocatalytic Degradation ◽

Indoor Air ◽

Titanium Dioxide Photocatalyst

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Effects of solution pH and UV irradiation on the streaming potential of the titanium dioxide membranes

Journal of Membrane Science ◽

10.1016/j.memsci.2006.05.038 ◽

2006 ◽

Vol 282 (1-2) ◽

pp. 342-350 ◽

Cited By ~ 12

Author(s):

W WANG ◽

Y KU

Keyword(s):

Titanium Dioxide ◽

Uv Irradiation ◽

Streaming Potential ◽

Solution Ph

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Design of gold nanoparticles-decorated SiO2@TiO2 core/shell nanostructures for visible light-activated photocatalysis

RSC Advances ◽

10.1039/c6ra27591e ◽

2017 ◽

Vol 7 (13) ◽

pp. 7469-7475 ◽

Cited By ~ 19

Author(s):

Ryeri Lee ◽

Yogeenth Kumaresan ◽

Sei Young Yoon ◽

Soong Ho Um ◽

Il Keun Kwon ◽

...

Keyword(s):

Gold Nanoparticles ◽

Titanium Dioxide ◽

Visible Light ◽

Silicon Dioxide ◽

Au Nanoparticles ◽

Core Shell ◽

Photocatalytic Reaction ◽

Shell Nanostructures ◽

Visible Light Driven

In this study, we designed core/shell nanostructures (CSNs) of silicon dioxide (SiO2)/titanium dioxide (TiO2), which were decorated with gold (Au) nanoparticles (NPs), to activate the visible light-driven photocatalytic reaction.

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Adsorption of Bromic Acid Ion in Water by the Reduced Titanium Oxide

Materials Science Forum ◽

10.4028/www.scientific.net/msf.724.97 ◽

2012 ◽

Vol 724 ◽

pp. 97-100

Author(s):

Eiji Watanabe ◽

Kaori Nishizawa ◽

Masato Tazawa

Keyword(s):

Drinking Water ◽

Titanium Dioxide ◽

Titanium Oxide ◽

Uv Irradiation ◽

Health Hazard ◽

Gas Atmosphere ◽

Bromide Ion ◽

High Possibility ◽

Bromic Acid

Because bromic acid ion generated by the ozone processing of drinking water for sterilization is strong carcinogenic, there is a high possibility in persons health hazard. The titanium dioxide was reduced at 900-degree Centigrade by the gas atmosphere (CO or H2). It was found that the concentration of the bromic acid ion in water was decreased at time when the reduced titanium oxide was added to water including the bromic acid ion. The bromic acid ion in water could be adsorbed by the titanium oxide reduced. In addition, it was suggested that the bromic acid ion could be decomposed into the bromide ion with low carcinogenic by using the photocatalitic function of titanium oxide under UV irradiation.

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