Formation of TiO2 particles during thermal decomposition of Ti(NO3)4, TiOF2 and TiOSO4

Софронов, Д. С.; Rucki, Mirosław; Demidov, Oleksii; Doroshenko, A.G.; Sofronova, E. M.; Shaposhnyk, Anna; Kapustnik, Oleksii; Mateychenko, P.V.; Kucharczyk, Wojciech

doi:10.1016/j.jmrt.2020.08.115

Cited by 22 publications

(4 citation statements)

References 25 publications

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“…Titanium white has been used in paint, plastic, paper, fiber, ink, rubber, food, and cosmetics [1][2][3]. Titanium alloy has been applied in the chemical industry, aerospace, electric power, ocean engineering, medicine, shipbuilding, sports, metallurgy, and salt making [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Migration and Enrichment Behaviors of Ca and Mg Elements during Cooling and Crystallization of Boron-Bearing Titanium Slag Melt

Hong

Wang

et al. 2021

Crystals

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Synthetic rutile was prepared from titanium slag melt with low energy consumption and a small amount of additive (B2O3) in our previous work. The modification mechanism of titanium slag was not clear enough. The migration and enrichment behaviors of Ca and Mg elements during cooling and crystallization of boron-bearing titanium slag melt were characterized by XRF, FESEM, EMPA, and XPS. Results show that when additive (B2O3) is added, Ti elements are migrated and enriched in the area to generate rutile, while Ca, Mg, and B elements are migrated and enriched in another area to generate borate. With the additive (B2O3) amount increased, Ca and Mg element migration is complete and more thorough. Additive (B2O3) promotes rutile formation and inhibits the formation of anosovite during cooling and crystallization of titanium slag melt. With the additive (B2O3) amount increasing from 0% to 6%, the proportion of Ti3+ in the modified titanium slag reduces from 9.15% to 0%, and the proportion of Ti4+ increases from 90.85% to 100% under the same cooling and crystallization condition. The result will lay the foundation for the efficient preparation of synthetic rutile by adding B2O3 to the titanium slag melt.

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Section: Introductionmentioning

confidence: 99%

Migration and Enrichment Behaviors of Ca and Mg Elements during Cooling and Crystallization of Boron-Bearing Titanium Slag Melt

Hong

Wang

et al. 2021

Crystals

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“…When compared to the diffraction of the Ir 7 Ta 3 O z anode (Figure S4), it was rational to believe that the Bi x Ti 10–x O y -I outer layer at x of 0 and 3 would be amorphous due to insufficient annealing temperature. Evidence was presented that a complete thermal decomposition of TiOSO 4 into crystalline TiO 2 could occur at temperatures > 700 °C …”

Section: Resultsmentioning

confidence: 99%

Electrochemical Chlorine Evolution by Bi–Ti Oxide with a Heterojunction on Ir–Ta Oxide: Insights from the Effects of Layer Configurations

et al. 2023

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When coated on top of Ir-based dimensionally stable anodes, binary Bi−Ti oxides could enhance the chlorine evolution reaction (ClER) efficiency for chlor-alkali and mediated water treatment. However, the underlying mechanism and the effects of Bi necessitated further clarification. This study prepared Bi x Ti 10-x O y heterojunction layers on an existing Ir 7 Ta 3 O z anode by thermal decomposition (425 °C) of TiOSO 4 and Bi(NO 3 ) 3 under varied Ti:Bi ratios and precursor matrix (inorganic versus organic solvents). Plain material characterizations (scanning electron microscopy and X-ray diffraction) were performed together with voltammetry and potentiostatic electrolysis (in 50 mM NaCl, 50 mM HCOONa, and 0.1 M NaClO 4 ). The top Bi x Ti 10−x O y was nominated as the Cl − binding site with Ir 7 Ta 3 O z as the ohmic contact. Bi 12 TiO 20 and β-Bi 2 O 3 (formed at x > 5) on the outer layer could elevate the reactivity of surface bound hydroxyl radicals and the ClER selectivity. However, relatively loosely packed and thick overlayers (due to glycolate and isopropanol in precursor) aggravated the current and energy efficiency of ClER as well as the anodic stability.

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“…Literature reports indicate the retention of both anatase and rutile TiO 2 when Ti-containing materials are heated above 700 °C, making thermogravimetric analysis (TGA) an acceptable method to semiquantitatively evaluate TiO 2 NP loading in the NFW composites . All TGA data were collected using a TA Q500 TGA.…”

Section: Methodsmentioning

confidence: 99%

Mesoporous Cellulose-TiO₂ Nanoparticle Composite Textile for “Excellent” UV Protection

Gulbrandson,

Larm,

Stachurski

et al. 2023

ACS Appl. Eng. Mater.

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Herein, we disclose the first utilization of mesoporous natural fiber welded (NFW) cellulose to sequester titanium dioxide nanoparticles (TiO 2 NPs) from aqueous colloids, resulting in "excellent" UV-protective textiles. Because mesoporous NFW cellulose possesses a high surface area (≥200 m 2 g −1 ) and nanometer sized pores (ca. 2−20 nm), it can be used as a scaffold for a wide variety of materials on the same scale. In this study, the mesoporous NFW cellulose encapsulates commercially available, 5 nm TiO 2 NPs from colloidal suspension, promoting rapid (ca. 60 s) uptake without disruptive in situ NP formation. Furthermore, drying of the material collapses the mesopores after colloid exposure, entrapping the NPs within the mesoporous biopolymer matrix. Our methods deliver TiO 2 NP at a loading of ca. 1.6 wt %, resulting in fabrics that possess ultraviolet protection factor (UPF) ratings of 200+ and are considered "Excellent" by the U.S. Food and Drug Administration (FDA). These results were compared against biopolymer controls (neat cellulose cloth and nonmesoporous NFW cellulose cloth), which possess distinctly lower UPF values of 12.1 and 41, respectively, when subjected to equivalent TiO 2 NP uptake conditions (NP loadings of 6.9 and 0.8 wt %, respectively). Scanning electron microscopy (SEM) images and accompanying energy-dispersive X-ray spectroscopy (EDS) maps elucidate NP uptake within pores, showing a uniform layer of TiO 2 NPs extending 3 μm into the mesoporous NFW textile surface. Ultimately, this study discloses a novel application of biopolymer engineering showing the advantage of using mesoporous NFW cellulose as a scaffold for functional biocomposites. The study not only presents a simple and scalable method to make high-performance UV-protective fabrics but also details a generalizable approach for nanomaterial entrapment using mesoporous NFW composites, so long as the size of the encapsulated material and the scaffold are complementary.

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Formation of TiO2 particles during thermal decomposition of Ti(NO3)4, TiOF2 and TiOSO4

Cited by 22 publications

References 25 publications

Migration and Enrichment Behaviors of Ca and Mg Elements during Cooling and Crystallization of Boron-Bearing Titanium Slag Melt

Migration and Enrichment Behaviors of Ca and Mg Elements during Cooling and Crystallization of Boron-Bearing Titanium Slag Melt

Electrochemical Chlorine Evolution by Bi–Ti Oxide with a Heterojunction on Ir–Ta Oxide: Insights from the Effects of Layer Configurations

Mesoporous Cellulose-TiO₂ Nanoparticle Composite Textile for “Excellent” UV Protection

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Formation of TiO2 particles during thermal decomposition of Ti(NO3)4, TiOF2 and TiOSO4

Cited by 22 publications

References 25 publications

Migration and Enrichment Behaviors of Ca and Mg Elements during Cooling and Crystallization of Boron-Bearing Titanium Slag Melt

Migration and Enrichment Behaviors of Ca and Mg Elements during Cooling and Crystallization of Boron-Bearing Titanium Slag Melt

Electrochemical Chlorine Evolution by Bi–Ti Oxide with a Heterojunction on Ir–Ta Oxide: Insights from the Effects of Layer Configurations

Mesoporous Cellulose-TiO2 Nanoparticle Composite Textile for “Excellent” UV Protection

Contact Info

Product

Resources

About

Mesoporous Cellulose-TiO₂ Nanoparticle Composite Textile for “Excellent” UV Protection