Preparation method of two-dimensional porous titanium dioxide nano sheet

A nanosheet and gel method technology, applied in titanium dioxide, chemical instruments and methods, preparation/purification of sulfur, etc., can solve the problem of not being able to have a sheet-like structure and a pore-like structure at the same time, and achieve the effect of accelerating mass transfer efficiency.

Active Publication Date: 2021-03-19
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a two-dimensional porous TiO 2 The preparation method of nanosheet, which can

Method used

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  • Preparation method of two-dimensional porous titanium dioxide nano sheet
  • Preparation method of two-dimensional porous titanium dioxide nano sheet
  • Preparation method of two-dimensional porous titanium dioxide nano sheet

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Embodiment 1

[0029] 0.4968 g polyether F127 (M W ≈12600 mol·g -1 ) and 0.9896g of polyvinylpyrrolidone (PVP) were added to a mixed solution consisting of 15 mL of tetrahydrofuran, 15 mL of dichloromethane, 2.4118 g of glacial acetic acid and 3.5164 g of concentrated hydrochloric acid. After stirring for 10 min, 3.4212 g of tetrachloromethane was added dropwise Titanium chloride, continue to stir for 5 min after the dropwise addition, then add 0.2 g of distilled water dropwise to obtain a red solution, place the obtained red solution in an oven at 40 °C for 24 h to obtain a white gel; weigh 1.0324 g of the obtained gel and add into 30 mL of glycerol / ethanol solvent (the volume ratio of glycerol to ethanol is 1:2), and after vigorously stirring for 10 min, the resulting colorless and clear solution was transferred to the lining of a 50 mL hydrothermal kettle, and heated at 150 °C Hydrothermal treatment for 15 h, after hydrothermal treatment, at 10000 rpm·h -1 The white precipitate was obta...

Embodiment 2

[0031] 0.5016 g polyether F127 (M W ≈12600 mol·g -1 ) and 1.0235 g of polyvinylpyrrolidone (PVP) were added to a mixed solution consisting of 15 mL of tetrahydrofuran, 15 mL of dichloromethane, 2.4243 g of glacial acetic acid and 3.4989 g of concentrated hydrochloric acid. After stirring for 10 min, 3.4169 g of tetrachloromethane was added dropwise Titanium chloride, continue to stir for 5 min after the dropwise addition, then add 0.2 g of distilled water dropwise to obtain a red solution, place the obtained red solution in an oven at 40 °C for 24 h to obtain a white gel; weigh 1.1205 g of the obtained gel and add into 30 mL of glycerol / ethanol solvent (the volume ratio of glycerol to ethanol is 1:5), and after vigorously stirring for 10 min, the resulting colorless and clear solution was transferred to the lining of a 50 mL hydrothermal kettle, and heated at 150 °C Hydrothermal treatment for 15 h, after hydrothermal treatment, at 10000 rpm·h -1 The white precipitate was obt...

Embodiment 3

[0033] 0.4896 g polyether F127 (M W ≈12600 mol·g -1 ) and 1.0358g of polyvinylpyrrolidone (PVP) were added to a mixed solution consisting of 15 mL of tetrahydrofuran, 15 mL of dichloromethane, 2.4268 g of glacial acetic acid and 3.4936 g of concentrated hydrochloric acid. After stirring for 10 min, 3.4023 g of tetrachloromethane was added dropwise Titanium chloride, continue to stir for 5 min after the dropwise addition, then add 0.2 g of distilled water dropwise to obtain a red solution, place the obtained red solution in an oven at 40 °C for 24 h to obtain a white gel; weigh 1.0561 g of the obtained gel and add into 30 mL of glycerol / ethanol solvent (the volume ratio of glycerol to ethanol is 1:7), and after vigorously stirring for 10 min, the resulting colorless and clear solution was transferred to the lining of a 50 mL hydrothermal kettle, and heated at 150 °C Hydrothermal treatment for 15 h, after hydrothermal treatment, at 10000 rpm·h -1 The white precipitate was obta...

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Abstract

The invention discloses a preparation method of a two-dimensional porous TiO2 nano sheet, which comprises the following steps: preparing a porous TiO2 precursor by using a sol-gel method, carrying outhydrothermal synthesis to obtain TiO2, and roasting to remove a pore-forming agent, thereby obtaining the two-dimensional porous TiO2 nano sheet. The method is high in repeatability and mild in hydrothermal condition, the prepared TiO2 nano sheet is regular in morphology, rich active sites are exposed through the porous structure of the TiO2 nano sheet, the mass transfer efficiency can be improved, and the TiO2 nano sheet has good catalytic activity in a selective catalytic oxidation H2S reaction.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, in particular to a two-dimensional porous TiO 2 Preparation methods of nanosheets. Background technique [0002] h 2 S is a common flammable, highly toxic and highly corrosive gas, which is commonly found in industrial production processes such as petroleum cracking, natural gas extraction, food processing and coal resource utilization. h 2 The acidic characteristics of S will not only corrode chemical equipment and poison catalysts, increase input costs and reduce product quality, but also cause damage to the ecological environment and harm human health. With the national environmental protection law on H 2 S emission standards are becoming increasingly stringent, how to efficiently remove H 2 S At the same time, effectively solving the recycling of sulfur resources is one of the problems to be solved in the development process of industrial production and environmental protection. [0...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J35/10B01J37/10B01J37/03C01B17/04C01G23/08B82Y30/00B82Y40/00
CPCB01J21/063B01J35/1014B01J35/1061B01J35/023B01J37/0018B01J37/10B01J37/036C01B17/0434C01B17/0465C01G23/08B82Y30/00B82Y40/00C01P2004/20C01P2004/64C01P2002/72C01P2004/03C01P2006/12C01P2006/16
Inventor 曹彦宁姚争沈丽娟梁诗景江莉龙
Owner FUZHOU UNIV
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