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Preparation method and application of MoO3 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 good uniformity, uniform size and good repeatability

Active Publication Date: 2020-03-27
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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  • Preparation method and application of MoO3 self-assembled hexagonal prism structure
  • Preparation method and application of MoO3 self-assembled hexagonal prism structure
  • Preparation method and application of MoO3 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 synthesis method of a MoO3 self-assembled hexagonal prism. The method comprises the following steps: adding a soluble molybdenum salt into a mixed solvent of water, isopropanol and 1,3,5-trimethylbenzene, and performing stirring until uniformity; then adding a proper amount of sodium lauryl sulfate, polyether F127, polyvinylpyrrolidone K-30 and dodecylamine, and performing stirring to obtain a uniform solution; adding nitric acid to adjust the pH value, carrying out a hydrothermal reaction, and centrifuging, washing and drying the product to obtain a precursor; and carrying out heat treatment on the precursor to obtain an alpha-MoO3 material. The orthorhombic-phase plate-shaped MoO3 self-assembly hexagonal prism structure is obtained by adopting the method of combining the hydrothermal reaction with the heat treatment process. The raw materials used in the method are cheap and are easy to store, the synthesis method is simple, and the product has a special morphology and a uniform and adjustable size, and has potential application values 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 Applications(China)
IPC IPC(8): C01G39/02
CPCC01G39/02C01P2004/11C01P2002/72C01P2004/03
Inventor 郭嘉李行马谦褚姝姝李绘张琪
Owner UNIV OF JINAN
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