Topic
Titanium nitrate
About: Titanium nitrate is a research topic. Over the lifetime, 46 publications have been published within this topic receiving 487 citations.
Papers
TL;DR: In this paper, mesoporous rutile and anatase TiO2 samples were prepared using SBA-15 as template and freshly synthesized titanium nitrate and titanium chloride solutions as precursors.
Abstract: Ordered mesoporous rutile and anatase TiO2 samples are prepared using mesoporous silica SBA-15 as template and freshly synthesized titanium nitrate and titanium chloride solutions as precursors. The rutile material formed from the nitrate solution is monocrystalline and contains minimal amounts of Si with a Si:Ti ratio of 0.031(4), whereas the anatase material formed from the chloride solution comprises nanocrystals and contains a higher content of Si with a Si:Ti ratio of 0.18(3). It is found that control of temperature and selection of Ti-containing precursor play important roles in determining the crystal phase and crystallinity. A possible formation mechanism of porous crystalline TiO2 is suggested. Characterization of these porous materials is performed by XRD, HRTEM, and nitrogen adsorption/desorption. SBA-15-templated mesoporous rutile TiO2 exhibits a higher Li ion insertion capability than KIT-6-templated TiO2 due to its larger surface area. Likewise mesoporous anatase TiO2:SiO2 composite has a better photoactivity than bulk TiO2 or TiO2-loaded SBA-15 for bleaching methylene blue.
133 citations
TL;DR: In this article, a mesoporous monocrystalline rutile TiO2 has been fabricated at low temperature using hard templates of SBA-15 and KIT-6 as hard templates, and the key step of the synthetic process was introducing titanium nitrate complex into the template pores and allowing it to dry, dehydrate, decompose, and finally, formTiO2 crystals in the pores.
Abstract: Mesoporous monocrystalline rutile TiO2 has been fabricated at low temperature using mesoporous silicas SBA-15 and KIT-6 as hard templates. The key step of the synthetic process was introducing titanium nitrate complex into the template pores and allowing it to dry, dehydrate, decompose, and finally, form TiO2 crystals in the pores. It was found that the reaction temperature and concentration of HNO3 in the used precursor had great effects to the crystallization of TiO2. Removal of the silica templates after the TiO2 crystallization has been investigated. Crystallization of TiO2 in cage-containing mesoporous silicas, FDU-12 and SBA-16 was not successful, further confirming the previous speculation about strong interaction between the crystals and the wall of silica cages. The porous titanium oxide specimens were characterized by using various techniques, including XRD, HRTEM, and nitrogen adsorption/desorption. Proton conductivity and Li-ion insertion property of the samples were also examined. The highest...
116 citations
TL;DR: In this paper, the synthesis of ultra-fine Li 2 TiO 3 powder by combustion reaction of lithium nitrate, titanium nitrate and specific fuels was investigated, and the specific surface area of the as-synthesized powder was 10 to 14 m 2 /g and the primary particle size was about 30 nm.
61 citations
TL;DR: A facile hydrothermal method was firstly employed to synthesize iron oxide coupled and doped titania nanocomposites using an aqueous solution of titanium nitrate as discussed by the authors.
Abstract: A facile hydrothermal method was firstly employed to synthesize iron oxide coupled and doped titania nanocomposites using an aqueous solution of titanium nitrate. The present nanocomposites exhibit altered compositional, optical, electrical, magnetic and photocatalytic properties with respect to varying dosage of iron in the titania matrix. The architecture of characteristic iron oxide such as Fe2O3 coupled with titania was confirmed by 57Fe Mossbauer spectroscopy and X-ray absorption fine structure spectroscopic measurements. The enhanced photocatalytic activity was demonstrated by comparing with that of pure hematite, anatase TiO2, rutile TiO2 and P25 in the degradation of methylene blue under visible light (λ > 480 nm) irradiation in an aqueous suspension. The strategy presented here gives a promising route towards the development of a metal oxide coupled and doped semiconductor material for applied photocatalysis and related applications.
49 citations
TL;DR: In this article, the effect of nanosized TiO2 particles on the electrical conductivity of sintered specimens was investigated, and the results showed that the nanoparticles successfully formed and dispersed within the copper matrix.
Abstract: Cu–TiO2 nanocomposite powders were synthesised by thermochemical process. The composite powders (containing 0, 2.5, 5 and 7 wt-% of TiO2), prepared by spray drying of the (aqueous) solution of copper nitrate and titanium nitrate followed by heat treatment at 900°C for 1 h and reduction in hydrogen atmosphere at 500°C for 1 h. The composite powders were prepared by cold pressing and then sintering at 900°C for 1 h. Studies on their microstructures have been carried out through X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Mechanical properties and electrical conductivity of sintered specimens were measured, and the effect of TiO2 content on these properties was investigated. The results showed that the nanosized TiO2 particles (with a diameter of about 10–30 nm) was successfully formed and dispersed within the copper matrix. By introducing TiO2 particles up to 2.5 weight percept, the electrical conductivity wastage is very high.
26 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 3 |
| 2019 | 1 |
| 2018 | 2 |
| 2017 | 1 |
| 2016 | 2 |
| 2015 | 5 |