Diffusion doping of cobalt in rod-shape anatase TiO2 nanocrystals leads to antiferromagnetism

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).

Intrinsic ferromagnetism in insulating cobalt doped anatase TiO2.

Using complementary experiments we show that the room temperature ferromagnetism observed in anatase Co:TiO(2) films is not carrier mediated, but coexists with the dielectric state. TEM and x-ray absorption spectroscopy reveal a solid solution of Co in anatase, where Co is not metallic but in the +2 state substituting for Ti. Measurements at 300 K yield a M(S) of 1.1 mu(B)/Co atom, while all fi...

RETRACTED: Effects of N Doping on Structure and Improvement Photocatalytic Properties of Anatase TiO2 Nanoparticles

Synergistic effects of nonmetal co-doping with sulfur in anatase TiO2: a DFT + U study.

Using DFT + U calculations, the crystal structure and electronic properties of nonmetal co-doping with sulfur in anatase TiO2 are systematically investigated. The initial purpose of this work is to improve the photocatalytic performance of S mono-doped TiO2, in which S occupies the lattice Ti site and acts as a recombination center. Among eight nonmetal impurities that occupy the interstitial s...