Method for synthesizing spindly bismuth phosphate by adopting imidazole dihydric phosphate type ionic liquid

An imidazole dihydrogen phosphate, ionic liquid technology, applied in phosphorus compounds, chemical instruments and methods, inorganic chemistry and other directions, can solve problems such as poor effect, and achieve the effect of high product purity and low cost

Inactive Publication Date: 2014-10-08
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current oxide-type photocatalytic effect is poor. In order to overcome this shortcoming, people have developed such as AgPO4, BiOX(X=Cl, Br, I), BiWO6, BiPO4 and other new photocatalysts to improve their photocatalytic performance

Method used

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  • Method for synthesizing spindly bismuth phosphate by adopting imidazole dihydric phosphate type ionic liquid
  • Method for synthesizing spindly bismuth phosphate by adopting imidazole dihydric phosphate type ionic liquid
  • Method for synthesizing spindly bismuth phosphate by adopting imidazole dihydric phosphate type ionic liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dissolve 0.5 mol of N-methylimidazole in 100 mL of deionized water, add phosphoric acid dropwise at a molar ratio of 1:1, and stir at 60°C for 2 h. A rotary evaporator is used to remove water and unreacted raw materials in the mixed liquid, and the obtained light yellow viscous liquid is the imidazole dihydrogen phosphate ionic liquid. Dissolve 4.85 g of bismuth nitrate and 1.85 g of imidazolium dihydrogen phosphate ionic liquid in 100 mL of deionized water at an equimolar ratio, sonicate at 60 °C for 2 h, and centrifuge to separate the precipitate. After washing several times and drying in a drying oven at 90 °C for 6 h, the resulting product was spindle-shaped BiPO 4 .

Embodiment 2

[0027] Dissolve 1 mol of N-methylimidazole in 100 mL of deionized water, add phosphoric acid dropwise at a molar ratio of 1:1, and stir at 60°C for 2 h. A rotary evaporator is used to remove water and unreacted raw materials in the mixed liquid, and the obtained light yellow viscous liquid is the imidazole dihydrogen phosphate ionic liquid. Dissolve 4.85 g of bismuth nitrate and 1.85 g of imidazolium dihydrogen phosphate ionic liquid in 100 mL of deionized water at an equimolar ratio, sonicate at 60 °C for 2 h, and centrifuge to separate the precipitate. After washing several times and drying in a drying oven at 90 °C for 6 h, the obtained product was spindle-shaped BiPO 4 .

Embodiment 3

[0029] Dissolve 0.5 mol of N-methylimidazole in 100 mL of deionized water, add phosphoric acid dropwise at a molar ratio of 1:1, and stir at 60°C for 2 h. A rotary evaporator is used to remove water and unreacted raw materials in the mixed liquid, and the obtained light yellow viscous liquid is the imidazole dihydrogen phosphate ionic liquid. Dissolve 9.7 g of bismuth nitrate and 3.7 g of imidazolium dihydrogen phosphate ionic liquid in 100 mL of deionized water at an equimolar ratio, sonicate at 60°C for 2 h, centrifuge to separate the precipitate, and wash with deionized water and absolute ethanol After washing several times and drying in a drying oven at 90 °C for 6 h, the obtained product was spindle-shaped BiPO 4 .

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Abstract

The invention belongs to the field of preparation and research of an inorganic material, namely bismuth phosphate and in particular relates to a method for synthesizing spindly bismuth phosphate by adopting imidazole dihydric phosphate type ionic liquid. The method comprises the following steps: (1) preparing the imidazole dihydric phosphate type ionic liquid, namely dissolving N-methylimidazole in deionized water, dripping phosphoric acid, stirring, and removing water and unreacted raw materials in the mixed solution to obtain light yellow viscous liquid, namely the imidazole dihydric phosphate type ionic liquid; and (2) dissolving bismuth nitrate and the imidazole dihydric phosphate type ionic liquid in the deionized water, performing ultrasonic treatment, performing centrifugal separation and precipitation, washing, and drying to obtain the target product spindly bismuth phosphate. The method for preparing the spindly bismuth phosphate by adopting the imidazole dihydric phosphate type ionic liquid is simple and easy in operation and low in cost, and the prepared product is high in purity and is expected to be produced in batches.

Description

technical field [0001] The invention belongs to the field of preparation and research of inorganic material bismuth phosphate, and in particular relates to a method for synthesizing spindle-shaped bismuth phosphate by using imidazole dihydrogen phosphate type ionic liquid. Background technique [0002] In today's society, energy crisis and environmental pollution have become the key issues hindering human progress [Qiu Mingyan, Zhang Tianyong, Li Bin, etc. Materials Herald A: Review, 2012,26(3):48-52.], how to solve these two The thorny problem has become the research focus of many scholars. The photocatalytic reaction is to convert the energy of ultraviolet or visible light into the energy required for chemical reactions to generate catalysis, so that the surrounding oxygen and water molecules are excited into free radicals with great oxidizing ability. Decomposes most organic pollutants and inorganic substances. Once a breakthrough is made in photocatalytic hydrogen produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/37B01J27/186
Inventor 赵荣祥李秀萍
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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