Dissociation of Water on Anatase TiO2 Nanoparticles: the Role of Undercoordinated Ti Atoms at Edges

2009 ◽  
Vol 113 (36) ◽  
pp. 15862-15867 ◽  
Author(s):  
Michel Posternak ◽  
Alfonso Baldereschi ◽  
Bernard Delley
Keyword(s):  
Tio2 Nanoparticles ◽  
Anatase Tio2

scholarly journals Formic Acid Photoreforming for Hydrogen Production on Shape-Controlled Anatase TiO2 Nanoparticles: Assessment of the Role of Fluorides, {101}/{001} Surfaces Ratio, and Platinization

ACS Catalysis ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 6692-6697 ◽  
Author(s):  
Francesco Pellegrino ◽  
Fabrizio Sordello ◽  
Lorenzo Mino ◽  
Claudio Minero ◽  
Vasile-Dan Hodoroaba ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Tio2 Nanoparticles ◽  
Anatase Tio2 ◽  
Shape Controlled

scholarly journals Flammable gases produced by TiO2 nanoparticles under magnetic stirring in water

Friction ◽  
2021 ◽  
Author(s):  
Pengcheng Li ◽  
Chongyang Tang ◽  
Xiangheng Xiao ◽  
Yanmin Jia ◽  
Wanping Chen
Keyword(s):  
Tio2 Nanoparticles ◽  
Quartz Glass ◽  
Dye Degradation ◽  
Mechanical Energy ◽  
Chemical Energy ◽  
Magnetic Stirring ◽  
Catalytic Role ◽  
Nanostructured Semiconductors

AbstractThe friction between nanomaterials and Teflon magnetic stirring rods has recently drawn much attention for its role in dye degradation by magnetic stirring in dark. Presently the friction between TiO2 nanoparticles and magnetic stirring rods in water has been deliberately enhanced and explored. As much as 1.00 g TiO2 nanoparticles were dispersed in 50 mL water in 100 mL quartz glass reactor, which got gas-closed with about 50 mL air and a Teflon magnetic stirring rod in it. The suspension in the reactor was magnetically stirred in dark. Flammable gases of 22.00 ppm CO, 2.45 ppm CH4, and 0.75 ppm H2 were surprisingly observed after 50 h of magnetic stirring. For reference, only 1.78 ppm CO, 2.17 ppm CH4, and 0.33 ppm H2 were obtained after the same time of magnetic stirring without TiO2 nanoparticles. Four magnetic stirring rods were simultaneously employed to further enhance the stirring, and as much as 30.04 ppm CO, 2.61 ppm CH4, and 8.98 ppm H2 were produced after 50 h of magnetic stirring. A mechanism for the catalytic role of TiO2 nanoparticles in producing the flammable gases is established, in which mechanical energy is absorbed through friction by TiO2 nanoparticles and converted into chemical energy for the reduction of CO2 and H2O. This finding clearly demonstrates a great potential for nanostructured semiconductors to utilize mechanical energy through friction for the production of flammable gases.

scholarly journals Mg2+ storage and mobility in anatase TiO2: the role of frustrated coordination

2019 ◽  
Vol 7 (8) ◽  
pp. 3704-3713 ◽  
Author(s):  
Kit McColl ◽  
Furio Corà
Keyword(s):  
Anatase Tio2 ◽  
Migration Barriers ◽  
Lattice Distortions

Low migration barriers of ∼540 meV allow good Mg mobility under dilute conditions, but cooperative lattice distortions limit mobility at high Mg concentrations.

scholarly journals Green synthesis of mesoporous anatase TiO2 nanoparticles and their photocatalytic activities

RSC Advances ◽  
2017 ◽  
Vol 7 (76) ◽  
pp. 48083-48094 ◽  
Author(s):  
Sunderishwary S. Muniandy ◽  
Noor Haida Mohd Kaus ◽  
Zhong-Tao Jiang ◽  
Mohammednoor Altarawneh ◽  
Hooi Ling Lee
Keyword(s):  
Low Temperature ◽  
Green Chemistry ◽  
Visible Light ◽  
Green Synthesis ◽  
Tio2 Nanoparticles ◽  
Soluble Starch ◽  
Anatase Tio2 ◽  
Photocatalytic Activities ◽  
Visible Light Active

Mesoporous anatase TiO2 nanoparticles are produced by employing a facile green chemistry approach at low temperature with soluble starch as the template in this work. The obtained TiO2 photocatalyst is visible-light active with good photocatalytic activities.

Interactions between TiO2 nanoparticles and plant proteins: Role of hydrogen bonding

2021 ◽  
pp. 107302
Author(s):  
Biao Yuan ◽  
Bing Jiang ◽  
Han Li ◽  
Xiao Xu ◽  
Fei Li ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Tio2 Nanoparticles ◽  
Plant Proteins
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