brookite

brook·ite

(bro͝ok′īt′)

A mineral form of titanium dioxide, TiO₂, having characteristic orthorhombic crystals and a red-brown to black color.

[After Henry James Brooke (1771-1857), British mineralogist.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

brookite

(ˈbrʊkaɪt)

(Minerals) a reddish-brown to black mineral consisting of titanium oxide in orthorhombic crystalline form: occurs in silica veins. Formula: TiO2

[C19: named after Henry J. Brooke (died 1857), English mineralogist]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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mineral

References in periodicals archive ?

Other rarer polymorphs of TiO2 are known including anatase, akaogiite, and brookite. Titanium dioxide (TiO2) is the standard white pigment used principally in paints, paper, and plastics.

Rutile TiO2 Market Status Report Demand Growing at a CAGR of 4.5% during the forecast period

Brookite, anatase and rutile are three basic crystalline structures of TiO2 (Testino et al., 2007).

ASSESSMENT OF ANTIOXIDANT AND ANTIBACTERIAL ACTIVITIES OF IRON-TITANIUM OXIDE NANOPARTICLES SYNTHESIZED IN VARIOUS SOLVENTS AND THEIR MICROSCOPIC CHARACTERIZATION

We used seven different Ti[O.sub.2] structures: Polyethylene glycol (PEG)-amorph Ti[O.sub.2], amorph Ti[O.sub.2], PEG-brookite, rutile, anatase, amorph bovine serum albumin (BSA), and brookite BSA.

Induction of Apoptosis and Inhibition of Invasion in Gastric Cancer Cells by Titanium Dioxide Nanoparticles

Brookite titania [26] or hydrate titania [27] peaks at 59.2 and 60.6 may be due to titania and acid presence in the sol.

Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology

Jolivet, "Synthesis of brookite Ti[O.sub.2] nanoparticles by thermolysis of Ti[Cl.sub.4] in strongly acidic aqueous media," Journal of Materials Chemistry, vol.

Study on Surface-Enhanced Raman Scattering Substrate Based on Titanium [O.sub.x]ide Nanorods Coated with Gold Nanoparticles

It is noteworthy that no extra peaks corresponding to rutile or brookite phase were observed [12, 13].

Photocatalytic Degradation of Organics by Using Nanocrystalline Titania

This compound have three crystalline phases: rutile (tetragonal structure), anatase (octahedral structure), brookite (orthorhombic structure), which according to the requirement of the electrostatic valence rule, each oxygen atom is shared by three octahedra.

Estudios de relajacion dielectrica a altas temperaturas en dioxido de titanio modificado con carbon activado

Ti[O.sub.2] is a well-known semiconductor and a versatile compound that exists in three crystalline forms, anatase, rutile, and brookite [14, 21], which can only be activated with UV light due to its high band gap energy (3.0 eV for rutile phase and 3.2 eV for anatase phase).