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Titanium(IV) oxide

Catalog Number
ACM13463677-42
CAS Number
13463-67-7
Product Name
Titanium(IV) oxide
Structure
Category
Nanowires; Organic Solar Cell (OPV) Materials
Synonyms
Titanium dioxide, Titania
Description
Nanopowder , 21 nm primary particle size (TEM), ≥99.5% trace metals basis
IUPAC Name
dioxotitanium
Molecular Weight
79.87 g/mol
Molecular Formula
TiO2
Canonical SMILES
O=[Ti]=O
InChI
1S/2O.Ti
InChI Key
GWEVSGVZZGPLCZ-UHFFFAOYSA-N
Boiling Point
3287 °C (lit.)
Melting Point
1850 °C>350 °C (lit.)
Flash Point
Not applicable
Purity
nanopowder,21 nmprimaryparticlesizeTEM,≥99.5%tracemetalsbasis
Density
4.26 g/mL at 25 °C (lit.)
Solubility
less than 1 mg/mL at 68° F (NTP, 1992);Insoluble in water and organic solvents. Dissolves slowly in hydrofluoric acid and in hot concentrated sulphuric acid.;Insoluble in water;Soluble in hot concentrated sulfuric acid; in hydrofluoric acid; insoluble in hydrochloric acid, nitric acid or diluted sulfuric acid;INSOL IN ORG SOLVENTS;SOLUBLE IN ALKALI;Solubility in water: none;Insoluble
Appearance
nanopowder
Application
TiO2 nanoparticles were used to study the photocatalytic hexane vapor degradation. It has been used as a sorbent for arsenic removal. TiO2 nanoparticles are suitable for remediation of antiseptic components in wastewater by photocatalysis. It has also been used to study adsorption of DNA oligonucleotides by titanium dioxide nanoparticles.
Storage
2-8°C
Assay
≥99.5% trace metals basis
Color/Form
White, tetragonal crystals;White powder in two crystalline forms, anatase and rutile;AMORPHOUS, INFUSIBLE POWDER;White powder
Complexity
18.3
Covalently-Bonded Unit Count
1
EC Number
236-675-5
Exact Mass
79.93777g/mol
Form
Nanopowder
Formal Charge
0
Hazard Statements
H302-H318-H373
Heavy Atom Count
3
ICSC Number
0338
MDL Number
MFCD00011269
MeSH Entry Terms
anatase;anatase titanium dioxide;brookite;food additive E171;nano-anatase;nano-TiO₂;rutile;Titania;titanium dioxide;titanium oxide;titanium white
Monoisotopic Mass
79.93777g/mol
NSC Number
15204
Odor
Odorless
Other Experimental
GRAVIMETRIC FACTOR: 0.33279;ANATASE: INDEX OF REFRACTION (NA): 2.554; 2.493; SPECIFIC GRAVITY: 3.84; BROOKITE: INDEX OF REFRACTION (NA): 2.583; 2.586; 2.741; SPECIFIC GRAVITY: 4.17 RUTILE: SPECIFIC GRAVITY: 4.26; INDEX OF REFRACTION (NA): 2.616; 2.903;Reactivity depends on previous heat treatment; prolonged heating produces less soluble material; made soluble by fusion with potassium bisulfate or alkali hydroxides or carbonates to form alkali titanates; Index of refraction: 2.7 (Titania crystals);RUTILE: X-RAY CRYSTALLOGRAPHIC DATA: CRYSTAL SYSTEM: TETRAGONAL; SPACE GROUP: P4/MNM(136); 2 G FORMULA WT/UNIT CELL; X-RAY CRYSTALLOGRAPHIC DATA: AO= 4.5937 + OR - 0.0005; CO= 2.9618 + OR - 0.0010;ANATASE: X-RAY CRYSTALLOGRAPHIC DATA: CRYSTAL SYSTEM: TETRAGONAL; SPACE GROUP: I41/AMD(141); 4 G FORMULA WT/UNIT CELL X-RAY CRYSTALLOGRAPHIC DATA: AO= 3.785 + OR - 0.002; CO= 9.514 + OR - 0.006;BROOKITE: X-RAY CRYSTALLOGRAPHIC DATA: CRYSTAL SYSTEM: ORTHORHOMBIC; SPACE GROUP: PCAB (61); 8 G FORMULA WT/UNIT CELL X-RAY CRYSTALLOGRAPHIC DATA: AO= 5.456 + OR - 0.002; BO= 9.182 + OR - 0.005; CO= 5.143 + OR - 0.003;When substantially pure, a massive single crystal (boule) of rutile has properties of precious gem with a very light straw color and with reflectance, refraction and brilliance measuring greater than those of a diamond. ... high opacity and tinting values are claimed for rutile-like pigments.;Titania is ... large ... crystals (translucent water-white or with yellowish cast) these crystals have refractive index ... higher than diamonds ... but lack hardness of diamonds.;Possesses perhaps the greatest hiding power of all inorg white pigments;Brown tetragonal crystals; MP: 1560 °C; density: 3.9 g/cu cm /Titanium(IV)oxide (Anatase)/;White, orthorhombic crystals; density: 4.17 g/cu cm /Titanium(IV)oxide (Brookite)/;White, tetrahedral crystals; MP: 1843 °C; BBP: approximately 3000 °C; density: 4.17 g/cu cm. Insoluble in water, dilute acid; soluble in concentrated acid /Titanium(IV)oxide (Rutile)/
Packaging
100 g
pH
SUSPENSION IN WATER (1 IN 10) IS NEUTRAL TO LITMUS;
Precautionary Statements
P280-P305+P351+P338+P310
Refractive Index
n20/D 1.520
Rotatable Bond Count
0
Signal Word
Danger
Specific Surface Area
35-65 m2/g (BET)
Topological Polar Surface Area
34.1A^2
Vapor Pressure
0 mm Hg at 68 °F Essentially (NTP, 1992);0 mmHg (approx);0 mmHg (approx)
Case Study

Preparation of Titanium (IV) Oxide Nanoparticle Dispersed Polyester Resin Composites

Ismail, Amr S., et al. Arabian Journal for Science and Engineering, 2020, 45, 197-203.

TiO2 reinforced linear saturated polyester resin nanocomposites can be prepared by dispersing metal oxide powder into aqueous polyester dispersion. The composition and crystallinity of this polyester nanocomposite are greatly reduced due to ionization. Furthermore, it also exhibits a highly condensed morphology and has high conductivity values due to cross-linking and temperature. The biological activity of the nanocomposites has higher value than the free polyester.
Synthetic procedure of titanium (IV) oxide dispersed polyester resin nanocomposites
· An aqueous dispersion of polyester was prepared by adding 9.95 g of polyester to 50 ml of H2O under vigorous stirring for 3 h at room temperature.
· Metal oxides were added slowly as a powder and were vigorously stirred with 0.05 g of titanium (IV) oxide for 3 h such that a weight percent of 0.05 for metal oxide/polyester was established.
· The suspension was stirred for 3 h followed by aging for 48 h at 100 °C in an autoclave. Then after washing and drying, the final nanocomposite product was obtained.

Preparation of Titanium Dioxide-Based Photocatalytic Materials

Tsang, Chi Him A., et al. Environment International, 2019, 125, 200-228.

Titanium dioxide (TiO2) family materials have been widely studied as photocatalysts from pure TiO2 to chemically modified TiO2-based materials due to their strong activity in photocatalytic reactions. As a semiconductor photocatalyst, titanium dioxide has excellent properties such as non-toxicity, chemical stability, high photocatalytic activity, ability to form thin films on substrates, and environmental friendliness.
Synthesis of Chemically Modified Titanium Dioxide Photocatalyst
· Metal-doped TiO2: From ordinary metals to transition metal particles or ions, all can be used as dopants for TiO2. For example, Fe-doped TiO2 can be used to catalyze the photodecomposition of CH3Cl.
· Metal oxide doped TiO2: Common metal oxide dopants include WO3, MnO2, FeOx, YOx, VOx, NiO and ZnO, etc.
· Doping TiO2 with non-metal elements: Doping TiO2 with non-metal elements is also an effective candidate method, such as anions (N3-, C4-, S4-), halides (F-, I-) and amines.
· TiO2 supported on substrates: Nanomaterials can be used as carriers to support TiO2 to improve its photocatalytic performance. Examples include carbon nanotubes (CNTs), graphitic carbonitrile (gC3N4), carbon fibers, and graphene.

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