Titanium Dioxide Nanoparticle Surface Reactivity with Atmospheric Gases, CO2, SO2, and NO2: Roles of Surface Hydroxyl Groups and Adsorbed Water in the Formation and Stability of Adsorbed Products

2014 ◽  
Vol 118 (40) ◽  
pp. 23011-23021 ◽  
Author(s):  
Charith E. Nanayakkara ◽  
Whitney A. Larish ◽  
Vicki H. Grassian
Keyword(s):  
Titanium Dioxide ◽  
Adsorbed Water ◽  
Surface Reactivity ◽  
Hydroxyl Groups ◽  
Atmospheric Gases ◽  
Surface Hydroxyl ◽  
Titanium Dioxide Nanoparticle ◽  
Surface Hydroxyl Groups ◽  
Nanoparticle Surface

Relationship between surface hydroxyl groups and liquid-phase photocatalytic activity of titanium dioxide

2015 ◽  
Vol 444 ◽  
pp. 42-48 ◽  
Author(s):  
Wenjuan Li ◽  
Dandan Du ◽  
Tingjiang Yan ◽  
Desheng Kong ◽  
Jinmao You ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Liquid Phase ◽  
Hydroxyl Groups ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups

The synthesis and structure of silica-supported bis(h5-cyclopentadienyl)dichlorotitanium(IV) complexes

1986 ◽  
Vol 51 (7) ◽  
pp. 1430-1438 ◽  
Author(s):  
Alena Reissová ◽  
Zdeněk Bastl ◽  
Martin Čapka
Keyword(s):  
Free Surface ◽  
Hydroxyl Groups ◽  
Titanium Complex ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Free Hydroxyl ◽  
Cyclopentadienyl Anion

The title complexes have been obtained by functionalization of silica with cyclopentadienylsilanes of the type Rx(CH3)3 - xSi(CH2)nC5H5 (x = 1-3, n = 0, 1, 3), trimethylsilylation of free surface hydroxyl groups, transformation of the bonded cyclopentadienyl group to the cyclopentadienyl anion, followed by coordination of (h5-cyclopentadienyl)trichlorotitanium. The effects of single steps of the above immobilization on texture of the support, the number of free hydroxyl groups, the coverage of the surface by cyclopentadienyl groups and the degree of their utilization in anchoring the titanium complex have been investigated. ESCA study has shown that the above anchoring leads to formation of the silica-supported bis(h5-cyclopentadienyl)dichlorotitanium(IV) complex.

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