Surface Sensitivity of Hydrogen Evolution and Formaldehyde Reduction on Differently Oriented TiO2 Anatase Nanocrystals

Solvothermal synthesis and characterization of anatase TiO2 nanocrystals with ultrahigh surface area.

Phase-pure, ultrafine nanocrystalline anatase with high specific surface area (up to 250 m(2) g(-1)) was obtained upon injection of a titanium alkoxide precursor into ethanol with designed volume of water under mild solvothermal conditions (<200 degrees C, 2 h). Primary particle sizes were tuned by adjusting various reaction parameters, with the smallest grain sizes occurring at low temperature...

Defect chemistry, surface structures, and lithium insertion in anatase TiO2.

Atomistic simulation techniques are used to investigate the defect properties of anatase TiO(2) and Li(x)TiO(2) both in the bulk and at the surfaces. Interatomic potential parameters are derived that reproduce the lattice constants of anatase, and the energies of bulk defects and surface structures are calculated. Reduction of anatase involving interstitial Ti is found to be the most favorable ...

Scanning tunneling microscopy investigation of the TiO2 anatase „101... surface

We report the first scanning tunneling microscopy ~STM! study of single-crystalline anatase. Atomically resolved images of the ~101! surface are consistent with a bulk-truncated (131) termination. Step edges run predominantly in the @010#, @ 1̄11# , and @ 1̄ 1̄1# directions. The surface is stable with very few point defects. Fourfold-coordinated Ti atoms at step edges are preferred adsorption site...

Green synthesis of shape-defined anatase TiO2 nanocrystals wholly exposed with {001} and {100} facetsw

Green synthesis of shape-defined anatase TiO2 nanocrystals wholly exposed with {001} and {100} facets.

Anatase TiO(2) nanocuboids wholly exposed with high-energy {001} and {100} facets were successfully synthesized by a novel, environmentally benign synthetic strategy using acid-delaminated vermiculite (DVMT) and tetramethylammonium hydroxide as synergistic morphology-controlling reagents, where the DVMT layers act as effective hard template selectively stabilizing the {001} facets of TiO(2).