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A kind of preparation method of nickel titanate/titanium dioxide nanocomposite material

A nanocomposite material, titanium dioxide technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve problems such as photocatalytic performance limitations, and achieve good photocatalysis The effect of function, simple process and complete spherical structure

Active Publication Date: 2022-03-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of photocatalytic performance, TiO 2 The band gap is wide and can only absorb ultraviolet light in sunlight, so the photocatalytic performance is limited

Method used

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  • A kind of preparation method of nickel titanate/titanium dioxide nanocomposite material
  • A kind of preparation method of nickel titanate/titanium dioxide nanocomposite material
  • A kind of preparation method of nickel titanate/titanium dioxide nanocomposite material

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific implementation mode 1: This implementation mode is a kind of NiTiO applied in photocatalysis 3 / TiO 2 The preparation method of nanocomposite material is specifically carried out according to the following steps:

[0032] 1. Preparation of precursor Ni-MOF: Ni(NO 3 ) 2 ·6H 2 Add O and terephthalic acid into dimethylformamide, stir until the solid is completely dissolved, then add ethylene glycol and continue stirring for 20-30 minutes to obtain the mixed solution I, then transfer the mixed solution I into the reaction kettle, and put the reaction kettle on Heating in an oven at a temperature of 120°C to 130°C for 6h to 12h, and finally centrifuging, washing and drying in sequence to obtain the precursor Ni-MOF;

[0033] Ni(NO 3 ) 2 ·6H 2 The molar concentration of O is 0.018mol / L~0.022mol / L;

[0034] The molar concentration of terephthalic acid in the mixed solution I is 0.007mol / L~0.012mol / L;

[0035] The volume ratio of described ethylene glycol and ...

specific Embodiment approach 2

[0044]Embodiment 2: This embodiment differs from Embodiment 1 in that: the drying temperature in Step 1 is 60° C., and the drying time is 10 hours. Others are the same as the first embodiment.

specific Embodiment approach 3

[0045] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the molar concentration of terephthalic acid in the mixed liquid I described in step 1 is 0.01 mol / L. Others are the same as those in Embodiment 1 or 2.

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Abstract

A preparation method of nickel titanate / titanium dioxide nanocomposite material, involving a kind of TiO 2 Preparation methods of nanocomposites. The present invention is to solve TiO 2 There is no problem of photocatalytic performance under visible light. The present invention: 1. Preparation of precursor Ni-MOF; 2. NiTiO 3 / TiO 2 Preparation of nanocomposites. The invention adopts the hydrothermal method to prepare the precursor Ni-MOF, the process is simple, and NiTiO 3 and TiO 2 The characteristics and advantages of the two materials, in the degradation of organic pollutants, water decomposition and CO 2 Reduction and other photocatalytic fields have great application prospects. The present invention adopts TiO 2 and NiTiO 3 Composite, broadened TiO 2 The photoresponsive area enables the composite material to play a better photocatalytic effect under sunlight. The Ni‑MOF spherical structure is complete and the size is about 600nm.

Description

technical field [0001] The present invention relates to a kind of TiO 2 Preparation methods of nanocomposites. Background technique [0002] As fossil fuel reserves are decreasing day by day, light energy, as an inexhaustible source of energy, has broad application prospects and plays an important role in modern development. The conversion of light energy into electrical or chemical energy has always been a very important research direction. [0003] Semiconductor material TiO 2 Because of its high catalytic activity, good chemical stability, low price and non-toxic and harmless, it is widely used in the degradation of organic pollutants, water splitting and CO 2 Restoration etc. However, in terms of photocatalytic performance, TiO 2 The band gap is wide, and it can only absorb ultraviolet light in sunlight, so the photocatalytic performance is limited. In recent years, TiO 2 Combining with materials with a smaller band gap to broaden its photoresponse area and improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J35/08B01J35/02B01J35/00
CPCB01J23/755B01J35/51B01J35/40B01J35/39
Inventor 徐洪波周生宇李垚赵九蓬
Owner HARBIN INST OF TECH