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A kind of preparation method of mesoporous tio2 foam with macroscopic 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 effects of simple production method, uniform pore size and low cost

Active Publication Date: 2016-04-27
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

National patent CN101126213B 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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  • A kind of preparation method of mesoporous tio2 foam with macroscopic morphology
  • A kind of preparation method of mesoporous tio2 foam with macroscopic morphology
  • A kind of preparation method of mesoporous tio2 foam with macroscopic morphology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of mesoporous TiO 2 Foam column, its main component is TiO 2 Nanobelt, the specific preparation process steps are as follows:

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

[0031] Add 1.0gTi(OC) to the 50mL polytetrafluoroethylene reactor 4 H 9 ) 4 , 16gNaOH and 35mL deionized water, ultrasonically stirred and mixed uniformly, first let it stand for 2h, heat it in an oven at 200℃ for 40h, then cool to room temperature naturally, and a titanic acid is formed in the PTFE reactor The regular disc-shaped solid formed by the self-assembly of sodium nanobelt is taken out and washed with deionized water to neutral to obtain sodium titanate nanobelt;

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

[0033] Step (2): Mesoporous TiO 2 Preparation of foam

[0034] Add 1.0gTi(OC) to the 50mL polytetrafluoroethylene...

Embodiment 2

[0037] A kind of mesoporous TiO 2 Foam column, its main component is TiO 2 Nanobelt, the specific preparation process steps are as follows:

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

[0039] Add 0.9gTi(OC) to the 50mL polytetrafluoroethylene reactor 4 H 9 ) 4 , 12g of NaOH and 35mL of deionized water, ultrasonically stirred and mixed uniformly, and then let it stand for 4 hours, then heat it in an oven at 180°C for 48 hours, and then cool to room temperature naturally. A titanic acid was formed in the PTFE reactor. The regular disc-shaped solid formed by the self-assembly of sodium nanobelt is taken out and washed with deionized water to neutrality to obtain sodium titanate nanobelt;

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

[0041] Step (2): Mesoporous TiO 2 Preparation of foam

[0042] Add 1.1gTi(OC) ...

Embodiment 3

[0045] A kind of mesoporous TiO 2 Foam column, its main component is TiO 2 Nanobelt, the specific preparation process steps are as follows:

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

[0047] Add 0.8gTi(OC) to the 25mL polytetrafluoroethylene reactor 4 H 9 ) 4 , 14g of NaOH and 35mL of deionized water, ultrasonically stirred and mixed uniformly, and then let it stand for 3 hours, then heat it in an oven at 230°C for 36 hours, and then cool to room temperature naturally. A titanic acid is formed in the PTFE reactor. The regular disc-shaped solid formed by the self-assembly of sodium nanobelt is taken out and washed with deionized water to neutrality to obtain sodium titanate nanobelt;

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

[0049] Step (2): Mesoporous TiO 2 Preparation of foam

[0050] Add 1.2gTi(OC) to th...

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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 nano materials, and specifically relates to a mesoporous TiO with a macroscopic morphology 2 Foam preparation method. Background technique [0002] TiO 2 It is an inorganic semiconductor material that is cheap, non-toxic, chemically stable and has excellent photocatalytic activity. Its band gap at room temperature is greater than 3.2 eV. Based on energy band theory, TiO 2 Under the irradiation of ultraviolet light with a wavelength of less than 387.5nm, electrons in the valence band obtain the energy of photons and transition to the conduction band to form photogenerated electrons (e - ), and at the same time form photo-generated holes in the valence band (h + ). Photonics (e - ) Has high reducibility and can remove metal ions in water; while the photo-generated holes (h + ) Can OH - And H 2 O is oxidized to OH radicals. OH radicals have super oxidizing properties, which can oxidize most organi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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