photocatalysis – Page 4 – TechConnect Briefs

Photocatalytic activity of mesoporous titanium dioxide nanoparticles under visible light irradiation

Ikuma Y., Kida S., Kuramoto R., Niwa K., Anandan S., Kanagawa Inst. of Tech., JP

Using surfactant and other chemicals, nano-template consisting of SiO2 was first prepared. Then the template was treated in titanium tetra-isopropoxide dissolved in 1-propanol to convert silicon into titanium. The product was heated in air or [...]

A comparative study over the photocatalytic activity of nanostructured TiO2 layers for air purifiers

Diamanti M.V., Del Curto B., Pedeferri MP., Cigada A., Politecnico di Milano, IT

The research presents an investigation over the efficiency of nanostructured TiO2 films as photocatalysts either in air purification systems or to be integrated in light devices, based on the exploitation of UV or Vis irradiation [...]

Increasing the Efficiency of Photocatalytic Water Treatment with Titanium Dioxide Nanoparticles by Control of Crystal Shape

Rickerby D., European Commission Joint Research Centre, IT

The most commonly employed photocatalytic material is titanium dioxide; anatase is the photocatalytically reactive phase. Highly dispersed anatase nanoparticles have a large specific surface area. However the reaction is inherently inefficient because only a very [...]

Synthesis of TiO2 Nanotube Arrays for Hydrogen Production from Photo-Assisted Water Splitting Reaction

Kawde A.Y., Vats A., Shende R.V., Puszynski J.A., South Dakota School of Mines & Technology, US

This study focuses on the synthesis of TiO2 nanotube arrays and its application for hydrogen generation from photo-assisted water-splitting reaction. In the synthesis approach, an nt-TiO2/Ti/nt-TiO2 structure was synthesized using electrochemical anodization in fluorine (F-) [...]

Increasing the Efficiency of Photocatalytic Water Treatment with Titanium Dioxide Nanoparticles by Control of Crystal Shape

Rickerby D., European Commission Joint Research Centre, IT

The most commonly employed photocatalytic material is titanium dioxide; anatase is the photocatalytically reactive phase. Highly dispersed anatase nanoparticles have a large specific surface area. However the reaction is inherently inefficient because only a very [...]

Photocatalytic Activity of Coated PET Fabrics with Synthesised Nano TiO2

Elahi A., Khajavi R., Torkian L., Textile Engineering, IR

Different concentration of TiO2 sols (10-40% g/l) synthesized by titanium tetra isopropoxide (TTIP). PET fabric dipped in prepared sols and sol-gel process accomplished at low temperature. Particle size of synthesised Nano TiO2 determined by particle [...]

Synthesis of TiO2 Nanotube Arrays for Hydrogen Production from Photo-Assisted Water Splitting Reaction

Kawde A.Y., Vats A., Shende R.V., Puszynski J.A., South Dakota School of Mines & Technology, US

This study focuses on the synthesis of TiO2 nanotube arrays and its application for hydrogen generation from photo-assisted water-splitting reaction. In the synthesis approach, an nt-TiO2/Ti/nt-TiO2 structure was synthesized using electrochemical anodization in fluorine (F-) [...]

Photo Catalytic Activity of Coated PET Fabrics with Synthesised Nano TiO2 & ZnO: A Comparative Study

Elahi A., Torkian L., Khajavi R., Azad University-Tehran South Branch, IR

The coated PET fabric with atomic ratios of Ti/(Ti+Zn) of 100%, 75%, 50%, 25%, and 0% was successfully prepared via sol–gel process from directly mixing TiO2/ZnO sol. The scanning electron microscopy (SEM) observation, energy dispersive [...]

A comparative study over the photocatalytic activity of nanostructured TiO2 layers for air purifiers

Diamanti M.V., Del Curto B., Pedeferri MP., Cigada A., Politecnico di Milano, IT

The research presents an investigation over the efficiency of nanostructured TiO2 films as photocatalysts either in air purification systems or to be integrated in light devices, based on the exploitation of UV or Vis irradiation [...]

Semiconductor nanoparticles in Photocatalysis: The Emerging Art and Perspectives

Sharma A., Sharma R., Sharma A., Sharma R., Sharma A., Sharma R., AKG College of Engineering, UPTU, IN

A principle of semiconductor nanophotocatalysis – a new trend in photochemistry deals with the photocatalytic redox-reactions with the participation of semiconductor nanoparticles. The origin of various size-dependent explanations in the semiconductor photocatalysis are spot light [...]