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Preparation method of Ni-NiO/C-TiO2 core-shell structure nanorod material photocatalyst

A nano-rod, photocatalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of high cost of photocatalysts, achieve high specific area, The effect of good adsorption performance and excellent photocatalytic performance

Pending Publication Date: 2021-11-30
HANGZHOU NORMAL UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problem of high cost of noble metal doped modified photocatalysts, the present invention provides a Ni-NiO / C-TiO 2 The preparation method of the photocatalyst of nano-rod material with core-shell structure, by NTA and metal salt NiCl 2 ·6H 2 O is obtained by sintering in a tube furnace after hydrothermal treatment. The conditions are mild and the purity is good. It is suitable for large-scale production, and the prepared Ni-NiO / C-TiO 2 Core-shell structure nanorod material photocatalyst with high photocatalytic activity

Method used

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  • Preparation method of Ni-NiO/C-TiO2 core-shell structure nanorod material photocatalyst
  • Preparation method of Ni-NiO/C-TiO2 core-shell structure nanorod material photocatalyst

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Embodiment 1

[0024] A kind of Ni-NiO / C-TiO 2 The preparation method of core-shell structure nanorod material photocatalyst comprises the following steps:

[0025] (1) Preparing the precursor: add 0.1911g NTA white powder to 15mL water to disperse in a clean beaker, then add 0.2377g NiCl 2 ·6H 2 O, NTA and NiCl 2 ·6H 2 The molar ratio of O is 1:1. Stir magnetically at room temperature for 10 minutes until it dissolves completely, then add 20ml of isopropanol, stir magnetically at room temperature for half an hour until uniform, move to a high-pressure reactor, put it in an oven, and react at 180°C 6 hours; the reaction product was centrifuged with a high-speed centrifuge at a speed of 6000rpm to obtain the precipitate. The precipitate was washed 3 times with water to neutrality, and then washed 3 times with absolute ethanol. The washed precipitate was placed in a vacuum oven at 60°C for 12 hours. get the precursor;

[0026] (2) Preparation of Ni / C nanorods: calcining the precursor in a...

Embodiment 2

[0029] A kind of Ni-NiO / C-TiO 2 The preparation method of core-shell structure nanorod material photocatalyst comprises the following steps:

[0030] (1) Preparing the precursor: add 0.3822g NTA white powder to 15mL water to disperse in a clean beaker, then add 0.2377g NiCl 2 ·6H 2 O, NTA and NiCl 2 ·6H 2 The molar ratio of O is 2:1. Stir magnetically at room temperature for 10 minutes until it dissolves completely, then add 20ml of isopropanol, stir magnetically at room temperature for half an hour until uniform, move to a high-pressure reactor, put it in an oven, and react at 180°C 6 hours; the reaction product was centrifuged with a high-speed centrifuge at a speed of 6000rpm to obtain the precipitate. The precipitate was washed 3 times with water to neutrality, and then washed 3 times with absolute ethanol. The washed precipitate was placed in a vacuum oven at 60°C for 12 hours. get the precursor;

[0031] (2) Preparation of Ni / C nanorods: calcining the precursor in a...

Embodiment 3

[0034] A kind of Ni-NiO / C-TiO 2 The preparation method of core-shell structure nanorod material photocatalyst comprises the following steps:

[0035] (1) Preparing the precursor: add 0.0944g NTA white powder in 15mL water to disperse in a clean beaker, then add 0.2377g NiCl 2 ·6H 2 O, NTA and NiCl 2 ·6H 2 The molar ratio of O is 1:2. Stir magnetically at room temperature for 10 minutes until it dissolves completely, then add 20ml of isopropanol, stir magnetically at room temperature for half an hour until uniform, move to a high-pressure reactor, put it in an oven, and react at 180°C 6 hours; the reaction product was centrifuged with a high-speed centrifuge at a speed of 6000rpm to obtain the precipitate. The precipitate was washed 3 times with water to neutrality, and then washed 3 times with absolute ethanol. The washed precipitate was placed in a vacuum oven at 60°C for 12 hours. get the precursor;

[0036] (2) Preparation of Ni / C nanorods: calcining the precursor in a...

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Abstract

The invention relates to the field of catalysts, provides a preparation method of a Ni-NiO / C-TiO2 core-shell structure nanorod-like material photocatalyst, and aims at the problem of high cost of a noble metal doped modified photocatalyst, the preparation method comprises the following steps: mixing NTA and NiCl2. 6H2O, preparing a precursor by a hydrothermal method, calcining the precursor in inert gas at 450-500 DEG C for 2-2.5 hours, and cooling to obtain the rod-like porous Ni / C nanorod composite photocatalyst. And depositing a TiO2 film on the Ni / C nanorod by using an ALD technology to prepare the Ni-NiO / C-TiO2 core-shell structure nanorod-like material photocatalyst. The method is mild in preparation condition, good in purity and suitable for large-scale manufacturing, and the prepared Ni-NiO / C-TiO2 core-shell structure nanorod-like material photocatalyst has high photocatalytic activity.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a Ni-NiO / C-TiO 2 The invention discloses a method for preparing a photocatalyst of a nanorod material with a core-shell structure. Background technique [0002] With the continuous deepening of industrialization in recent decades, the unrestrained exploitation of fossil energy and the lack of attention to the treatment of exhaust gas during use have caused excessive environmental pollution and a serious shortage of energy. This has become a stumbling block restricting industrial progress and economic take-off. Photocatalytic technology has shown great application potential in photolysis of water to produce hydrogen, degradation of pollutants, reduction of carbon dioxide, synthesis of organic matter, nitrogen fixation, and metal anticorrosion. It is considered to be one of the promising technologies for improving environmental pollution and alleviating energy shortages. one. ...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/755B01J35/00B01J35/02C01B32/40C07C1/02C07C9/04
CPCB01J23/755B01J21/063C07C1/02C01B32/40B01J35/50B01J35/39C07C9/04
Inventor 高鹏吴文博
Owner HANGZHOU NORMAL UNIVERSITY
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