Preparation method of zinc antimony bismuthate self-assembled nanorods with self-supporting structure and its products and applications

A self-supporting structure, zinc bismuth acid technology, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problem of antimony nanoparticles being difficult to combine together to form a Schottky heterojunction, preparation Problems such as complex process and large-scale preparation limitations, to achieve good photocatalytic decomposition performance of dyes, simple synthesis method, and easy control of the preparation process

Active Publication Date: 2021-07-20
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally, antimony and zinc bismuthate are mixed by mechanical mixing method, and it is difficult to combine antimony nanoparticles and zinc bismuthate to form a Schottky heterojunction; the method of hydrothermal synthesis can compound antimony and zinc bismuthate materials, However, the hydrothermal method has always had problems such as complex preparation process and strict process control, which limits the large-scale preparation of this material.

Method used

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  • Preparation method of zinc antimony bismuthate self-assembled nanorods with self-supporting structure and its products and applications
  • Preparation method of zinc antimony bismuthate self-assembled nanorods with self-supporting structure and its products and applications

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A antimony / zinc bismuthate self-assembled nanorod with a self-supporting structure, using sodium bismuthate, zinc acetate and antimony trichloride as raw materials, is synthesized by high-temperature calcination, and is prepared according to the following steps:

[0022] Accurately weigh 12.01g sodium bismuthate and 0.22 g zinc acetate (the molar ratio of sodium bismuthate to zinc acetate is 38:1), mix well, then place the mixed powder of sodium bismuthate and zinc acetate in the corundum tube reaction vessel High temperature zone; at the same time, 3.67 g of antimony trichloride was accurately weighed and placed in the low temperature zone of the corundum tube reaction vessel. The mass of antimony trichloride accounted for 30% of the mass of sodium bismuthate and zinc acetate.

[0023] Then seal the corundum tube and heat the high temperature zone to a temperature of 1400 o C. Heating the low temperature zone to 200 o C, keep warm for 20 h, the flow rate of argon is 2...

Embodiment 2

[0026] A self-assembled antimony / zinc bismuthate nanorod of self-supporting structure, the same as the steps in the examples, is prepared as follows:

[0027] Accurately weigh 6.32g sodium bismuthate and 0.22 g zinc acetate (the molar ratio of sodium bismuthate to zinc acetate is 20:1), mix well, then place the mixed powder of sodium bismuthate and zinc acetate in the corundum tube reaction vessel High temperature zone; at the same time, accurately weigh 1.96 g of antimony trichloride and place it in the low temperature zone of the corundum tube reaction vessel. The mass of antimony trichloride accounts for 30% of the mass of sodium bismuthate and zinc acetate. Then seal the corundum tube and heat the high temperature zone to a temperature of 1200 o C. Heating the low temperature zone to 200 o C, keep warm for 24h, the flow rate of argon is 200 cm 3 / min, finally obtained on the low-temperature surface at the end of the corundum tube is a nanorod with a diameter of 100-500nm...

Embodiment 3

[0029]A self-assembled antimony / zinc bismuthate nanorod of self-supporting structure, the same as the steps in the examples, is prepared as follows:

[0030] Accurately weigh 6.32g sodium bismuthate and 0.22 g zinc acetate (the molar ratio of sodium bismuthate to zinc acetate is 20:1), mix well, then place the mixed powder of sodium bismuthate and zinc acetate in the corundum tube reaction vessel High-temperature zone; at the same time, accurately weigh 0.98 g of antimony trichloride and place it in the low-temperature zone of the corundum tube reaction vessel. The mass of antimony trichloride accounts for 30% of the mass of sodium bismuthate and zinc acetate.

[0031] Then seal the corundum tube and heat the high temperature zone to a temperature of 1300 o C. Heating the low temperature zone to 200 o C, keep warm for 22 h, the flow rate of argon is 200 cm 3 / min, the nanorods with a diameter of 100-500 nm and a length of 3-8 μm were finally obtained on the low-temperature s...

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Abstract

The invention discloses a preparation method of antimony / zinc bismuthate self-assembled nanorods with a self-supporting structure and its products and applications. Using sodium bismuthate, zinc acetate and antimony trichloride as raw materials, argon as a carrier gas, and using high temperature Calcination conversion is the main technical path, and antimony / zinc bismuthate Schottky heterojunction nanorods are prepared in one step. The composite material can significantly improve the photocatalytic performance, especially the degradation rate of dye wastewater. The preparation method of the material is simple, the preparation cost is low, it is suitable for large-scale production, and it can also be widely used in the fields of optical instruments, electronic devices, energy conversion and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a preparation method of a self-supporting antimony / zinc bismuthate self-assembled nanorod and its product and application. Background technique [0002] With the rapid development of industrialization in modern times and the depletion of fossil energy, energy shortage has become an important factor restricting human development. Solar energy has become a new choice to replace fossil energy due to its clean and pollution-free, wide distribution and abundant reserves. As a means of converting low-density solar energy into high-density chemical energy, photocatalytic technology has attracted more and more attention from many researchers because of its mild reaction conditions and non-toxic reaction products. [0003] Among the many photocatalytic materials with important application prospects, zinc bismuthate, as a new type of semiconductor f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/18B01J37/08B82Y30/00B82Y40/00C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J23/18B01J35/004B01J37/082B82Y30/00B82Y40/00C02F2101/308C02F2101/34C02F2101/38C02F2101/40C02F2305/10
Inventor 何丹农王敬锋徐少洪林琳张文丽金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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