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Polyoxo-titanium cluster and synthesis method and application thereof

A technology of clusters and titanium oxide clusters, applied in titanium organic compounds, nanotechnology for materials and surface science, hydrogen production, etc., can solve problems such as poor reproducibility, low cluster nuclei, and poor stability

Active Publication Date: 2019-05-07
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiOx clusters reported so far have poor stability, low cluster nuclei, and poor reproducibility

Method used

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  • Polyoxo-titanium cluster and synthesis method and application thereof
  • Polyoxo-titanium cluster and synthesis method and application thereof
  • Polyoxo-titanium cluster and synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Titanium isopropoxide (3.3mmol), formic acid (26.5mmol), and propionic acid (73.6mmol) were placed in a 20ml glass bottle, mixed uniformly at room temperature, kept in an oven at 80°C for 3 days, taken out, naturally cooled to room temperature, and separated The solid phase was removed and washed with propionic acid to obtain the target product in the form of colorless strip crystals. This crystal product can be obtained by adding a small amount of sodium hydroxide, potassium chloride, etc., or a small amount of water and hydrogen peroxide into the reaction system.

[0085] from figure 1 It can be seen that this compound has 44 titanium atoms, except for two formic acid and two water-based ligands, the rest of the ligands are all propionic acid ligands;

[0086] from figure 2 It can be seen that the compound is stable in air for at least three days;

[0087] from image 3 It can be seen that the vibration characteristic peak of this compound Ti-O cluster nucleus is a...

Embodiment 2

[0090] Put titanium isopropoxide (3.3mmol), glutaric acid (1.5mmol), and propionic acid (73.6mmol) in a 20ml glass bottle, mix well at room temperature, keep the temperature in an oven at 80°C for 3 days, take it out, and naturally cool to room temperature , separated the solid phase and washed it with propionic acid to obtain the target product in colorless strip crystal state. This crystalline product can be obtained by adding a small amount of sodium hydroxide, potassium chloride, etc., or adding a small amount of water and hydrogen peroxide, etc., into the reaction system.

[0091] from Figure 5 It can be seen that this compound has 44 titanium atoms, except for two glutaric acid and two water-based ligands, the rest of the ligands are all propionic acid ligands;

[0092] from Image 6 It can be seen that the compound is stable in air for at least three days;

[0093] from Figure 7 It can be seen that the vibration characteristic peak of this compound Ti-O cluster nu...

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Abstract

The invention provides a polyoxo-titanium cluster and a synthesis method and application thereof. The polyoxo-titanium cluster has a molecular formula of H8{Ti44([mu]2-O)36([mu]3-O)30(B)n(A)2(H2O)2}.xB'. Through a solvothermal synthesis method, namely, through reaction in a solvent while heating, the polyoxo-titanium cluster is obtained by simply mixing reactants for a one-step self-assembly reaction. The synthesis conditions of the method is simple, the requirement for the purity of the reactants is low, the reactants are easy to obtain and not costly, and the reactants used can all be obtained by purchasing chemically pure reagents without further purification. The yield of the method is up to 90% or more, and mass production is facilitated. The polyoxo-titanium cluster has an efficientand stable activity in hydrogen generation through water photolysis, and can be used for water-splitting and pollutant degradation and in electronic devices such as solar cells. The method is simple and efficient, release less pollution in the synthesis process and meets the requirements of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of preparation of crystal materials, and in particular relates to a titanium oxide cluster compound and its synthesis method and application. Background technique [0002] Nano Titanium Dioxide TiO 2 Due to its non-toxic and harmless, abundant reserves and excellent physical and chemical properties, it has been widely used in gas sensing, charge transport, decomposition of toxic organic pollutants, and photocatalysis. as TiO 2 The structure and properties of materials simulate molecules, titanium oxide clusters (also known as Ti 44 Clusters, titanyl clusters, titanyl clusters or titanyl fullerenes, etc.) due to their diverse geometric sizes, clear atomic structure, adjustable cluster core size, precise modification, and different degrees of solubility in organic solvents Reactivity and reactivity have attracted the in-depth research of many scientists, and have been applied to many interdisciplinary field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/28B82Y30/00B82Y40/00C01B3/04
CPCY02E60/36
Inventor 高美艳张健张磊
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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