A bundle of tiof 2 low temperature preparation method

A low-temperature, solution technology, applied in chemical instruments and methods, chemical/physical processes, catalysts for physical/chemical processes, etc., can solve problems such as energy consumption and complex process, and achieve good response, good degradation performance, and good application prospects. Effect

Inactive Publication Date: 2018-01-16
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrothermal method requires a high-temperature and high-pressure environment, and the process is complex and energy-intensive. If it can be prepared at a low temperature, it will be simpler and more energy-saving.

Method used

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  • A bundle of tiof <sub>2</sub> low temperature preparation method
  • A bundle of tiof <sub>2</sub> low temperature preparation method
  • A bundle of tiof <sub>2</sub> low temperature preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment prepares bundled TiOF 2 The method consists of the following steps:

[0019] (1) Measure 30.4mL of absolute ethanol, add it into 35.2mL of butyl titanate according to the volume ratio of butyl titanate to absolute ethanol of 1.15:1, and mix well to obtain A solution;

[0020] (2) Measure 30.4 mL of absolute ethanol and add it to 180 mL of deionized water, and add 20.2 mL of HF at the same time, so that the volume ratio of deionized water, absolute ethanol, and HF is 1:0.169:0.112 to obtain solution B;

[0021] (3) Add solution B to solution A drop by drop, so that the molar ratio of butyl titanate in mixed solution A to deionized water in mixed solution B is 1:100, and the dropping speed is controlled at 3 drops per second, at 60°C , 650r / min constant temperature magnetic stirring for 2 hours to obtain TiOF 2 Gel, aged at room temperature for 2 days;

[0022] (4) The aged TiOF 2 The gel was moved to a blast drying oven at 100°C for constant temperatu...

Embodiment 2

[0025] This embodiment prepares bundled TiOF 2 The method consists of the following steps:

[0026] (1) Measure absolute ethanol, add it to butyl titanate according to the ratio of butyl titanate to absolute ethanol volume ratio of 1:1, and mix well to obtain A solution;

[0027] (2) Take deionized ethanol and HF and add them into deionized water so that the volume ratio of deionized water, dehydrated ethanol and HF is 1:0.1:0.1 to obtain solution B;

[0028] (3) Add solution B to solution A dropwise, so that the molar ratio of butyl titanate in mixed solution A to deionized water in mixed solution B is 1:90, and the dropping speed is controlled at 2 drops per second, at 55°C , 500r / min constant temperature magnetic stirring for 3 hours to obtain TiOF 2 Gel, aged at room temperature for 1 day;

[0029] (4) The aged TiOF 2 The gel was moved to a blast drying oven at 80°C and dried at a constant temperature, washed with distilled water and ethanol three times alternately, dr...

Embodiment 3

[0032] This embodiment prepares bundled TiOF 2 The method consists of the following steps:

[0033] (1) Measure absolute ethanol, add it to butyl titanate according to the ratio of butyl titanate to absolute ethanol volume ratio of 1.2:1, and mix well to obtain A solution;

[0034] (2) Take deionized ethanol and HF and add them into deionized water so that the volume ratio of deionized water, dehydrated ethanol and HF is 1:0.2:0.2 to obtain solution B;

[0035] (3) Add solution A to solution B dropwise, so that the molar ratio of butyl titanate in mixed solution A to deionized water in mixed solution B is 1:105, and the dropping speed is controlled at 3 drops per second, at 58°C , 800r / min constant temperature magnetic stirring for 1 hour to obtain TiOF 2 Gel, aged at room temperature for 3 days;

[0036] (4) The aged TiOF 2 The gel was moved to a blast drying oven at 90°C and dried at a constant temperature, washed alternately with distilled water and ethanol three times ...

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Abstract

The invention relates to a tube bundle TiOF 2 A low-temperature preparation method, which uses tetra-n-butyl titanate as a precursor, and adopts an improved sol-gel method to prepare tubular TiOF under low temperature and normal pressure conditions. 2 , Tubular TiOF 2 The specific surface area is large, and the crystal grains are small, the degradation performance to rhodamine B (RhB) is good, the reflectivity is low in the visible light wavelength range of 380-780nm, and the response is good, and the preparation method of the present invention is simple, the reaction conditions are mild, It has no by-products and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst synthesis research, in particular to a tube bundle TiOF 2 low temperature preparation method. Background technique [0002] Currently, research by H.Li et al. (Nanoscale, 2014; 6:897–902) found that cubic TiOF 2 It can be a good visible light catalyst, and shows good degradation performance to rhodamine B (RhB) and 4‐chlorophenol l (4‐CP), but the cubic TiOF 2 The preparation adopts hydrothermal method, such as H.Li, Pengyu Dong(Materials Letters,2015,143(15):20‐23), S.Z.Qiao(Chem Commun,47(2011):6138–6140), Hongsen Li (Electrochimica Acta, Volume 62, 15February 2012, Pages 408‐415) and others use TiF 4 As a precursor, Kangle Lv (. Appl. Mater. Interfaces 2013, 5, 8663-8669), Jiaguo Yu et al. (Journal of Alloys and Compounds, 2011, 509 (13): 4557-4562) used butyl phthalate (TBT) As a precursor, Seung‐Taek Myung et al. (Journal of Power Sources, Volume 288, 15August 2015, Pages 376–383) u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/135B01J35/02
Inventor 侯晨涛丁家国柳文莉李妍洁杜炎玲
Owner XIAN UNIV OF SCI & TECH
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