objective: surface coating of dental mirrors using nanotechnology has been done to render them self-cleaning properties. nano-scaled titanium dioxide particles (tio2)show antimicrobial properties when exposed to ultra-violet (uv) light. the aim of this study was to evaluate the effect of surface coating of dental mirrors with nano titanium dioxide on their self-cleaning (from dentists’ perspect...

The self-cleaning property is usually connected to superhydrophobic surfaces (SHSs) where the dust particles can be easily removed by the rolling motion of droplets. It seems that superhydrophobicity (its durability is questionable nowadays) is a necessity. However here, it is disclosed that self-cleaning can also be realized on an ordinary surface by droplet impinging. The effects of surface w...

Photocatalytic properties of semiconductor materials, studied now for decades, represent huge potentialities as environmentally friendly self-cleaning surfaces. Up to now, inexpensive and non-toxic TiO2-based photocatalysts remain the most interesting solution from practical industrial point view. Nevertheless, obtaining titania surface in its anatase phase, polymorph presenting best photocatal...

Mesporous anatase-phase TiO(2) hollow spheres with high photocatalytic activity were prepared by hydrothermal treatment and self-transformation of amorphous TiO(2) solid spheres in an NH(4)F aqueous solution. The prepared samples were characterized by X-ray diffraction, scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, N(2) adsorption-desorption isotherms and UV-v...

Evaluation and quantification of the effects carbonation process on photocatalytic activity are essential for long-term functional assurance nano TiO2 modified concrete. This work focuses self-cleaning performance variation mortar containing different dosages hydrosol at carbonization duration. The colourimetric analysis is used to evaluate performances carbonated samples. distribution areas an...

Abstract—Ultraviolet photocatalytic oxidation (UV-PCO) technology has been recommended as a green approach to health indoor environment when it is integrated into mechanical ventilation systems for inorganic and organic compounds removal as well as energy saving due to less outdoor air intakes. Although much research has been devoted to UV-PCO, limited information is available on the UV-PCO beh...

We demonstrate ultrathin self-assembled Cu2MoS4 nanobelts synthesized by using Cu2O as the starting sacrificial template via a hydrothermal method. The nanobelts exhibit strong light absorption over a broad wavelength spectrum, suggesting their potential application as photocatalysts. The photocatalytic activity of nanobelts is evaluated by the degradation of Methyl Orange (MO) dye under visibl...

In this work, robust superhydrophobic cotton fabrics with ultraviolet (UV) shielding, self-cleaning, photocatalysis, and oil/water separation were successfully prepared based on micro/nano hierarchical ZnO/HNTs (halloysite nanotubes) hybrid particles silicone elastomer polydimethylsiloxane (PDMS). by in-situ growth of ZnO nanoparticles the surface halloysite nanotubes (HNTs). PDMS used to succe...