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a kind of moo 3 Preparation method and application of self-assembled hexagonal prism structure

A hexagonal prism and self-assembly technology, applied in the direction of molybdenum oxide/molybdenum hydroxide, etc., to achieve the effect of improving migration rate, uniform size and good dispersion

Active Publication Date: 2021-12-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, no size-tunable orthorhombic plate-like MoO has been found at home and abroad. 3 Related reports of self-assembled hexagonal prism structures

Method used

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  • a kind of moo <sub>3</sub> Preparation method and application of self-assembled hexagonal prism structure
  • a kind of moo <sub>3</sub> Preparation method and application of self-assembled hexagonal prism structure
  • a kind of moo <sub>3</sub> Preparation method and application of self-assembled hexagonal prism structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1.1 Add 1.5 g of ammonium molybdate tetrahydrate (AHM) to a mixed solvent of 30 mL of water, 0.5 mL of isopropanol, and 0.10 mL of 1,3,5-trimethylbenzene, and stir for 0.5 h;

[0028]1.2 Add 0.20 g of sodium dodecyl sulfate (SDS), 0.04 g of polyether F127, 0.002 g of PVP K-30, and 0.007 g of dodecylamine to the above solution and stir for 0.5 h, then add 1.2 mL Nitric acid was stirred for 0.5 h to form a mixed solution.

[0029] 1.3 Transfer the obtained mixed solution to a reaction kettle, then put it into an oven, set the parameters as follows: 160°C, 14h, then centrifuge with water and ethanol, wash, and dry.

[0030] 1.4 Place the precursor in a muffle furnace, and raise the temperature from room temperature to 500 °C at a rate of 1 °C / min in an air atmosphere, keep the temperature for 2 h, and obtain the product after the sample is cooled with the furnace.

[0031] The XRD result of the product is as follows figure 1 As shown, it can be seen from the figure that ...

Embodiment 2

[0033] 2.1 Add 0.85 g of AHM to a mixed solvent of 29 mL of water, 0.4 mL of isopropanol, and 0.10 mL of 1,3,5-trimethylbenzene, and stir for 0.5 h;

[0034] 2.2 Add 0.10 g of SDS, 0.031 g of polyether F127, 0.0018 g of PVP K-30, and 0.005 g of dodecylamine to the above solution and stir for 0.5 h, then add 1.2 mL of nitric acid and stir for 0.5 h to form a mixed solution.

[0035] 2.3 Transfer the obtained mixed solution to a reaction kettle, then put it into an oven, set the parameters as follows: 150°C, 14h, then centrifuge with water and ethanol, wash, and dry.

[0036] 2.4 Place the precursor in a muffle furnace, and raise the temperature from room temperature to 480 °C at a rate of 1 °C / min in an air atmosphere, and keep the temperature for 3 h. After the sample is cooled with the furnace, the product is obtained.

[0037] 2.5 The size-adjustable plate-like MoO is obtained after the sample is cooled with the furnace 3 Self-assembled hexagonal prism structure, the side ...

Embodiment 3

[0039] 3.1 Add 0.95 g of AHM to a mixed solvent of 28 mL of water, 0.7 mL of isopropanol, and 0.12 mL of 1,3,5-trimethylbenzene, and stir for 0.5 h;

[0040] 3.2 Add 0.13 g of SDS, 0.034 g of polyether F127, 0.0014 g of PVP K-30, and 0.004 g of dodecylamine to the above solution and stir for 0.5 h, then add 1.2 mL of nitric acid and stir for 0.5 h to form a mixed solution.

[0041] 3.3 Transfer the obtained mixed solution to a reaction kettle, then put it into an oven, set the parameters: 160 °C for 12 hours, then centrifuge with water and ethanol, wash, and dry.

[0042] 3.4 Place the precursor in a muffle furnace, and raise the temperature from room temperature to 530 °C at a rate of 1.5 °C / min in an air atmosphere, and keep the temperature for 2 h. After the sample is cooled with the furnace, the product is obtained.

[0043] The size-adjustable plate-like MoO was obtained after the sample was cooled in the furnace 3 Self-assembled hexagonal prism structure, the side leng...

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Abstract

The invention discloses a MoO 3 The synthesis method of self-assembled hexagonal prisms, the steps include: adding soluble molybdenum salt to a mixed solvent of water, isopropanol and 1,3,5-trimethylbenzene, and stirring evenly; then, adding an appropriate amount of sodium lauryl sulfate, Polyether F127, polyvinylpyrrolidone K-30 and dodecylamine are stirred to obtain a uniform solution; then nitric acid is added to adjust the pH value, and after hydrothermal reaction, the product is centrifuged, washed and dried to obtain a precursor; the precursor is heat-treated to obtain α‑MoO 3 Material. The present invention adopts the method combining hydrothermal reaction and heat treatment process to obtain orthorhombic plate-like MoO 3 Self-assembled hexagonal prism structures. The raw materials used in the invention are cheap, easy to store, simple in synthesis method, special in appearance, uniform in size and adjustable in size, and have potential application value in the fields of sensing and catalysis.

Description

technical field [0001] The invention belongs to the field of environmental material preparation, and in particular relates to a size-adjustable orthorhombic plate-like MoO 3 Hydrothermal synthesis of self-assembled hexagonal prism structures. Background technique [0002] With the advancement of science and technology, the gas emissions from agriculture, coal mining and other industrial fields are also increasing. MoO 3 As a semiconductor gas sensing material, it plays an important role in the gas sensor. The gas sensor can feedback the type and content of gas through electrical signal. Micron-sized MoO 3 Due to its low cost, easier realization of large-scale production, and good gas sensitivity and selectivity, it can be widely used in the field of gas sensors. [0003] MoO 3 It is an n-type semiconductor oxide with a wide band gap of 3.1 eV. Due to its stable physical and chemical properties, it is widely used in the fields of gas sensor, electrochemical, electrochro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G39/02
CPCC01G39/02C01P2004/11C01P2002/72C01P2004/03
Inventor 马谦郭嘉李行褚姝姝李绘张琪
Owner UNIV OF JINAN
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