Titanium dioxide: environmental white knight?

Titanium dioxide: environmental white knight?

T itanium dioxide (TiO 2) is a multi-faceted compound. It's the stuff that makes toothpaste white and paint opaque. TiO 2 is also a potent photocatalyst that can break down almost any organic compound, and a number of companies are seeking to capitalize on TiO 2 's reactivity by developing a wide range of environmentally beneficial products. During the late 1970s, scientists began to realize th...

Manganese Oxide-Surface Modified Titanium(IV) Dioxide as Environmental Catalyst

The purpose of this study is to present an “environmental catalyst” possessing both thermocatalytic activity and visible-light activity for the decomposition of organic pollutants. Molecule-sized MnOx clusters are highly dispersed on the surface of TiO2 (anatase/rutile = 4/1 w/w, P-25, Degussa) by the chemisorption-calcination cycle technique using Mn(acac)3 complex as a precursor (MnOx/TiO2). ...

Coping with the White Knight in Planning

Recent Tweak-based planners replace the White Knight technique of a modal truth criterion by a simple heuristic for choosing the estab-lisher of a term in situation, empirically trading between the rigorous precision of a criterion and the computational complexity. In this paper , I argue that this WK technique does not rely on the opposition between mathematical rigour and eeciency of an imple...

Graphite / Titanium Dioxide Composite

Nanosized titanium dioxide (TiO2) in its anatase form is the most frequently studied and as well as used photocatalyst. There are several syntheses procedures which enable to achieve photocatalytic TiO2. The solgel method utilizing titanium alkoxides is used most often. Alternative precursors such as titanium tetrachloride and titanyl sulphate are also frequently employed. Nowadays the environm...

Polypropylene/titanium Dioxide Nanocomposites