Direct Formation of Crystalline Phase Pure Rutile TiO₂ Nanostructures by a Facile Hydrothermal Method

TY - JOUR

T1 - Direct Formation of Crystalline Phase Pure Rutile TiO2 Nanostructures by a Facile Hydrothermal Method

AU - Mamakhel, Mohammad Aref Hasen

AU - Tyrsted, Christoffer

AU - Bøjesen, Espen Drath

AU - Hald, Peter Hald

AU - Iversen, Bo Brummerstedt

PY - 2013

Y1 - 2013

N2 - Small titania, TiO, nanoparticles (<∼10 nm) are normally restricted to the anatase polymorph, and synthesis of stable rutile nanoparticles below the critical size is challenging. Here, we report on a fast, low temperature and environmentally benign hydrothermal method to prepare phase pure rutile TiO nanorods with an average diameter of 42 nm covered by crystalline spherical nanoparticles around 10 nm in size. The synthesis approach utilizes titanium tetraisopropoxide and glycolic acid at 200 C for 3-12 h, and the samples were characterized by powder X-ray diffraction (PXRD), UV-vis spectroscopy, FT-IR spectroscopy, and transmission electron microscopy (TEM). In addition, in situ synchrotron PXRD measurements were carried out to follow the formation and growth of the rutile nanoparticles under the present mild hydrothermal conditions, and it is observed that rutile TiO is formed directly from solution without intermediate brookite or anatase phases.

AB - Small titania, TiO, nanoparticles (<∼10 nm) are normally restricted to the anatase polymorph, and synthesis of stable rutile nanoparticles below the critical size is challenging. Here, we report on a fast, low temperature and environmentally benign hydrothermal method to prepare phase pure rutile TiO nanorods with an average diameter of 42 nm covered by crystalline spherical nanoparticles around 10 nm in size. The synthesis approach utilizes titanium tetraisopropoxide and glycolic acid at 200 C for 3-12 h, and the samples were characterized by powder X-ray diffraction (PXRD), UV-vis spectroscopy, FT-IR spectroscopy, and transmission electron microscopy (TEM). In addition, in situ synchrotron PXRD measurements were carried out to follow the formation and growth of the rutile nanoparticles under the present mild hydrothermal conditions, and it is observed that rutile TiO is formed directly from solution without intermediate brookite or anatase phases.

UR - http://www.scopus.com/inward/record.url?scp=84887677121&partnerID=8YFLogxK

U2 - 10.1021/cg400858p

DO - 10.1021/cg400858p

M3 - Journal article

AN - SCOPUS:84887677121

SN - 1528-7483

VL - 13

SP - 4730

EP - 4734

JO - Crystal Growth & Design

JF - Crystal Growth & Design

IS - 11

ER -