نتایج جستجو برای: tio2 photocatalysis

تعداد نتایج: 25243  

Journal: :Environmental science & technology 2001
M E Calvo R J Candal S A Bilmes

Processes that occur in the TiO2-photocatalysis of binary aqueous solutions containing model photolytes with different affinity for the TiO2 surface (methanol and oxalic and salicylic acids) are analyzed from the photoelectrochemical response of TiO2 films under bias in a time window of 1-100 s. Long-lived oxidized intermediates produced upon illumination at 0.6 VSCE are detected by cathodic sw...

2014
Yanling Cai Maria Strømme Ken Welch

Titania (TiO2) induced photocatalysis has been widely investigated and applied as a disinfection strategy in many industrial and clinical applications. Reactive oxygen species (ROS), including hydroxyl radicals (•OH), superoxide radicals ( − •2 O ) and hydrogen peroxide (H2O2), generated in the photocatalytic reaction process are considered to be the active components prompting the bactericidal...

2017
Jin Zhang Yibing Cai Xuebin Hou Xiaofei Song Pengfei Lv Huimin Zhou Qufu Wei

Titanium dioxide (TiO2) nanofibers have been widely applied in various fields including photocatalysis, energy storage and solar cells due to the advantages of low cost, high abundance and nontoxicity. However, the low conductivity of ions and bulk electrons hinder its rapid development in lithium-ion batteries (LIB). In order to improve the electrochemical performances of TiO2 nanomaterials as...

2011
Andreas Kafizas Ivan Parkin

Titanium dioxide (TiO2) is the leading material for self-cleaning applications due to its chemical inertness, mechanical robustness, durability to extended photocatalytic cycling, low cost and high photocatalytic activity. There has been a concerted effort to try and improve the material’s functional properties through impurity doping; altering the band structure and electronic transport proper...

Journal: :Science of The Total Environment 2021

Advanced oxidation processes, such as using titanium dioxide (TiO2) photocatalysis, are being developed to reduce or eliminate the toxicity of treated water. In this study, removal purified anatoxin-a (ANTX-a), live Dolichospermum flos-aquae cells, and a cell extract organism under UV-A/TiO2 creation decomposition products their were investigated. Total degradation ANTX-a from initial concentra...

2017
Xiaodan Wang Sonia Estradé Yuanjing Lin Feng Yu Lluis Lopez-Conesa Hao Zhou Sanjeev Kumar Gurram Francesca Peiró Zhiyong Fan Hao Shen Lothar Schaefer Guenter Braeuer Andreas Waag

Recently, colored H-doped TiO2 (H-TiO2) has demonstrated enhanced photoelectrochemical (PEC) performance due to its unique crystalline core-disordered shell nanostructures and consequent enhanced conduction behaviors between the core-shell homo-interfaces. Although various hydrogenation approaches to obtain H-TiO2 have been developed, such as high temperature hydrogen furnace tube annealing, hi...

Journal: :Physical chemistry chemical physics : PCCP 2015
Weili Yu Dalal Noureldine Tayirjan Isimjan Bin Lin Silvano Del Gobbo Mutalifu Abulikemu Mohamed Nejib Hedhili Dalaver H Anjum Kazuhiro Takanabe

Efficient photocatalytic hydrogen generation in a suspension system requires a sophisticated nano-device that combines a photon absorber with effective redox catalysts. This study demonstrates an innovative molecular linking strategy for fabricating photocatalytic materials that allow effective charge separation of excited carriers, followed by efficient hydrogen evolution. The method for the s...

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