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Preparation method of mesoporous TiO2 foam with macro morphology

A foam and mesoporous technology, applied in the field of preparation of mesoporous TiO2 foam, can solve problems such as complicated operation, and achieve the effect of simple production method, strong macroscopic effect and good toughness

Active Publication Date: 2015-01-21
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

National patent CN 101126213 B discloses a kind of TiO 2 The preparation method of nano paper, the method obtains a kind of TiO2 by adding additives and then filtering 2 Wet paper, but this method is more cumbersome to operate

Method used

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  • Preparation method of mesoporous TiO2 foam with macro morphology
  • Preparation method of mesoporous TiO2 foam with macro morphology
  • Preparation method of mesoporous TiO2 foam with macro morphology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A mesoporous TiO 2 Foam columns whose main component is TiO 2 Nanobelts, the specific preparation process steps are as follows:

[0030] Step (1): Preparation of sodium titanate nanoribbons

[0031] Add 1.0g Ti(OC 4 h 9 ) 4 , 16g NaOH and 35mL deionized water, after ultrasonic stirring and mixing evenly, let stand for 2 hours, heat and react in an oven at 200°C for 40 hours, then cool to room temperature naturally, a titanium Sodium titanate nanobelts are self-assembled regular disk-shaped solids, which are taken out and washed with deionized water until neutral to obtain sodium titanate nanobelts;

[0032] Wherein: the sodium titanate nanobelt has a length of 2mm, a width of 85nm, and a thickness of 20nm; the disc-shaped solid has a diameter of 3cm, a thickness of 4mm, and a mass of 0.19g;

[0033] Step (2): Mesoporous TiO 2 foam preparation

[0034] Add 1.0g Ti(OC 4 h 9 ) 4 , 0.1g sodium titanate nanoribbons, 12g NaOH and 35mL deionized water, ultrasonicall...

Embodiment 2

[0037] A mesoporous TiO 2 Foam columns whose main component is TiO 2 Nanobelts, the specific preparation process steps are as follows:

[0038] Step (1): Preparation of sodium titanate nanoribbons

[0039] Add 0.9g Ti(OC 4 h 9 ) 4 , 12g NaOH and 35mL deionized water, after ultrasonic stirring and mixing evenly, let it stand for 4 hours, heat and react in an oven at 180°C for 48 hours, then cool to room temperature naturally, a titanium Sodium titanate nanobelts are self-assembled regular disk-shaped solids, which are taken out and washed with deionized water until neutral to obtain sodium titanate nanobelts;

[0040] Wherein: the sodium titanate nanobelt has a length of 1.5mm, a width of 80nm, and a thickness of 20nm; the disc-shaped solid has a diameter of 3.5cm, a thickness of 3mm, and a mass of 0.18g;

[0041] Step (2): Mesoporous TiO 2 foam preparation

[0042] Add 1.1g Ti(OC 4 h 9 ) 4 , 0.1g sodium titanate nanoribbons, 14g NaOH and 35mL deionized water, ultrason...

Embodiment 3

[0045] A mesoporous TiO 2 Foam columns whose main component is TiO 2 Nanobelts, the specific preparation process steps are as follows:

[0046] Step (1): Preparation of sodium titanate nanoribbons

[0047] Add 0.8g Ti(OC 4 h 9 ) 4 , 14g NaOH and 35mL deionized water, after ultrasonic stirring and mixing evenly, let it stand for 3 hours, heat and react in an oven at 230°C for 36 hours, then cool to room temperature naturally, a titanium Sodium titanate nanobelts are self-assembled regular disk-shaped solids, which are taken out and washed with deionized water until neutral to obtain sodium titanate nanobelts;

[0048] Wherein: the sodium titanate nanoribbon has a length of 1mm, a width of 75nm, and a thickness of 15nm; the disc-shaped solid has a diameter of 2cm, a thickness of 5mm, and a mass of 0.17g;

[0049] Step (2): Mesoporous TiO 2 foam preparation

[0050] Add 1.2g Ti(OC 4 h 9 ) 4 , 0.15g of sodium titanate nanoribbons, 16g of NaOH and 35mL of deionized water...

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Abstract

The invention belongs to the field of preparation of inorganic nano materials, and aims to provide a preparation method of mesoporous TiO2 foam with macro morphology. The preparation method comprises the following steps: preparation of sodium titanate nanobelts and preparation of mesoporous TiO2 foam. The preparation method disclosed by the invention has the beneficial effects that the mesoporous TiO2 foam with the macro morphology, prepared by using the method, has the characteristics of fine fiber, uniform aperture, light weight, good toughness, high temperature resistance and the like, and can fundamentally solve the problem of practicability of a single-nanobelt device by the average effect of the nanobelt performance; compared with ordinary nano thin films and nano particles, the mesoporous TiO2 foam shows a stronger macro effect, is controllable in thickness so as to ensure that the mesoporous TiO2 foam is more efficient when being used as a filtration membrane, has ultra-high porosity, shows extremely strong adsorption performance, provides an ideal carrier for the preparation of a functional composite nano material, and also is simple in manufacturing method and low in cost.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic nanomaterials, in particular to a mesoporous TiO with macroscopic morphology 2 Preparation method of foam. Background technique [0002] TiO 2 It is an inorganic semiconductor material that is cheap, non-toxic, chemically stable and has excellent photocatalytic activity, and its band gap at room temperature is greater than 3.2eV. Based on energy band theory, TiO 2 Under the irradiation of ultraviolet light with a wavelength of less than 387.5nm, the electrons on the valence band gain the energy of photons and jump to the conduction band to form photogenerated electrons (e - ), while forming photogenerated holes in the valence band (h + ). Photogenerated electrons (e - ) has high reducibility and can remove metal ions in water; while the photogenerated holes (h + ) can convert OH - and H 2 O is oxidized to OH radicals. OH free radicals have super oxidizing properties, can oxidize m...

Claims

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Application Information

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IPC IPC(8): C01G23/053C04B38/00
CPCB82Y40/00C01G23/053C01P2002/72C01P2004/03C01P2004/04C01P2004/17C01P2004/64
Inventor 曹雪波朱龙凤谷俐武军
Owner JIAXING UNIV
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