CAS 13463-67-7 Titanium dioxide - Analytical Products / Alfa Chemistry

CAT	AP13463677-D
CAS	13463-67-7
EC Number	236-675-5

Description	nanotubes, 25 nm average diameter, powder
BP	2972 °C
Form	nanotubes; powder
Linear Formula	TiO2
MP	1843 °C
Size	500MG

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Case Study

Preparation of TiO₂ Superhydrophobic Composite Coating

Zhou, Chaogang, et al. Frontiers in Chemistry 10 (2022): 943055.

To prepare a high-performance superhydrophobic coating on a brass substrate and improve its application limitations in practical production, this paper modifies TiO₂ nanoparticles to impart superhydrophobicity. A composite structure of FAS/STA-TiO₂ superhydrophobic coating was obtained by modifying the particles with 1,1,2H,2H-perfluoroalkyltrimethylsilane (FAS).
Preparation of STA-TiO₂ Powder: Modified TiO₂ particles were prepared using a hydrothermal method. First, 5g of TiO₂ was added to 125 ml of ethanol solution and stirred at room temperature for 2 hours. Then, 1g of STA was added to 125 ml of ethanol solution and stirred at a constant temperature of 40 °C for 2 hours. The homogeneous TiO₂-ethanol solution was then mixed with the STA-ethanol solution and stirred at 70 °C for 8 hours, resulting in a white mixed suspension. After cooling to room temperature, the mixture was centrifuged and dried in an oven at 60 °C for 5 hours. The dried product was ground to obtain white modified TiO₂ powder (STA-TiO₂).
Preparation of Coating Solution: The obtained STA-TiO₂ powder was dissolved in ethanol and sonicated at room temperature for 20 minutes. A certain amount of curing agent (KH550) and dispersant (SDBS) was added, and the mixture was stirred at room temperature for 2 hours to obtain a uniform white STA-TiO₂ coating solution. Under the same conditions, an FAS-ethanol solution (prepared in a 1:10 ratio) was added to the STA-TiO₂ coating solution to obtain the FAS/STA-TiO₂ coating solution.

Synthesis of TiO₂/Graphene Oxide Nanocomposites

Zhang, Hui, et al. RSC advances 8.60 (2018): 34241-34251.

In this study, titanium dioxide (TiO₂)/graphene oxide (GO) nanocomposites were synthesized as catalysts for the photoreduction of endocrine-disrupting heavy metal ions in reverse osmosis concentrate (ROC).
Synthesis of TiO₂/GO Nanocomposites: TiO₂/GO nanocomposites were prepared using a hydrothermal method. First, 150 mg of TiO₂ was dispersed in 150 mL of DI water in a beaker. Then, a certain volume of GO aqueous colloidal suspension was added to the solution, followed by ultrasonication for 10 minutes. The volumes of GO aqueous colloidal suspension were 12, 16, 20, 24, and 28 mL, corresponding to GO contents of 60, 80, 100, 120, and 140 mg, respectively. The mixture was then dropwise added into liquid nitrogen and freeze-dried for 20 hours, resulting in TiO₂/GO nanocomposites with varying GO content. The mass ratios of TiO₂ to GO in the TiO₂/GO nanocomposites were 15:6, 15:8, 15:10, 15:12, and 15:14, with the corresponding products labeled as TiO₂/GO-6, TiO₂/GO-8, TiO₂/GO-10, TiO₂/GO-12, and TiO₂/GO-14. Additionally, titanium dioxide/reduced graphene oxide (TiO₂/rGO) nanocomposites were prepared by thermal treatment at 400 °C under a nitrogen atmosphere.

Preparation and Decomposition of Manganese Complexes Loaded on TiO₂ Nanoparticles under Photochemical Reactions

Madadkhani, Sepideh, et al. International Journal of Hydrogen Energy 51 (2024): 742-746.

This study explores the reactivity of the complex H₂O(terpy)MnIII(μ-O)₂MnIV(terpy)H₂O loaded onto TiO₂ nanoparticles under photochemical conditions, revealing the decomposition of the Mn complex and the formation of Mn(II) complexes and MnOx.
Preparation of Manganese Complexes Loaded on TiO₂ Nanoparticles
1: An aqueous solution of Mn(NO₃)₂ (1.7 mmol, 3 mL, pH ≈ 3.0) was added to an aqueous suspension of terpy (1.7 mmol, 40 mL, pH ≈ 3.0), resulting in a yellow solution. KMnO₂₄ (0.62 mmol, dissolved in 5.8 mL of water) was then added dropwise to the solution, followed by stirring to obtain a dark green solution. After filtration, NaNO₃ solution (5 mL, pH = 3.0) was added to saturate the solution. The mixture was cooled in a refrigerator, forming crystals (compound 1). The crystals were washed with ice water and ether to remove impurities.
Manganese complex loaded on TiO₂ (Mn-b, compound 1 loaded onto TiO₂ after photochemical reaction): At room temperature, 1.2 mmol of compound 1 and 20 mg of TiO₂ NPs were mixed in water and stirred at room temperature for 90 minutes. The functionalized TiO₂ NPs were washed three times with 1.5 mL of water and recovered by centrifugation at 6000 rpm (Mn 1:100). The compound (Mn-a, compound 1 loaded onto TiO₂ after photochemical reaction) was characterized after 24 hours of light exposure.

Titanium dioxide

Preparation of TiO2 Superhydrophobic Composite Coating

Synthesis of TiO2/Graphene Oxide Nanocomposites

Preparation and Decomposition of Manganese Complexes Loaded on TiO2 Nanoparticles under Photochemical Reactions

Preparation of TiO₂ Superhydrophobic Composite Coating

Synthesis of TiO₂/Graphene Oxide Nanocomposites

Preparation and Decomposition of Manganese Complexes Loaded on TiO₂ Nanoparticles under Photochemical Reactions