Preparation method and application of BiOI nanoflower with three-dimensional layered structure

A three-dimensional layered, nano-flower technology, applied in chemical instruments and methods, inorganic chemistry, water treatment of special compounds, etc., can solve the problems of difficult control of reaction conditions, unfavorable scaled production, complex operating conditions, etc., and achieves easy scale-up. Production, excellent visible light catalytic degradation of industrial dyes and antibiotic properties, the effect of short hydrolysis time

Pending Publication Date: 2019-12-13
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the shortcomings of the traditional BiOI preparation method, such as relatively complex operating conditions, relatively cumbersome process, difficult control of reaction conditions, high cost, cumbersome post-processing, and

Method used

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  • Preparation method and application of BiOI nanoflower with three-dimensional layered structure
  • Preparation method and application of BiOI nanoflower with three-dimensional layered structure
  • Preparation method and application of BiOI nanoflower with three-dimensional layered structure

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Experimental program
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Embodiment 1

[0025] Embodiment 1: The preparation method of the BiOI nanoflower with three-dimensional layered structure in this embodiment is realized through the following steps:

[0026] Step 1. Add 2mmol of bismuth nitrate pentahydrate into 32mL of ethylene glycol and stir for 0.5h, then add 2mmolHI, stir thoroughly for 0.5h, transfer to a high-pressure reactor with a polytetrafluoroethylene liner, and react at 200°C for 0.5h. Cool at room temperature to obtain a clear solution;

[0027] Step 2: After adding 32 mL of water, a yellow solid precipitate appeared immediately, and the solid was separated by suction filtration. The obtained solid compound was washed three times with water and absolute ethanol, and dried at 60°C to obtain BiOI nanoflowers.

[0028] figure 1 It is the X-ray powder diffraction test picture of BiOI nanoflowers. It can be seen from the figure that the X-ray derivative peak of the prepared solid powder is completely consistent with the standard card JCPDS: 73-20...

Embodiment 2

[0029] Embodiment 2: The preparation method of the BiOI nanoflower with three-dimensional layered structure in this embodiment is realized through the following steps:

[0030] Step 1. Add 2mmol of bismuth nitrate pentahydrate into 16mL of ethylene glycol and stir for 0.5h, then add 2mmolHI, stir thoroughly for 0.5h, then transfer to a high-pressure reactor with a polytetrafluoroethylene liner, react at 120°C for 2h, room temperature Cool to obtain a clear solution;

[0031] Step 2, then add 40mL of water to immediately appear a yellow solid precipitate, the solid is separated by suction filtration, the obtained solid compound is washed three times with water and absolute ethanol, and dried at 60°C to obtain BiOI nanoflowers.

Embodiment 3

[0032] Embodiment 3: The preparation method of the BiOI nanoflower with three-dimensional layered structure in this embodiment is realized through the following steps:

[0033] Step 1. Add 2mmol of bismuth nitrate pentahydrate into 64mL of methanol and stir for 1h, then add 2mmol of HI, stir thoroughly for 1h, then transfer to a high-pressure reactor with a polytetrafluoroethylene liner, react at 140°C for 1h, and cool at room temperature to obtain clarification solution;

[0034] Step 2, then add 128mL of water and immediately appear a yellow solid precipitate, the solid is separated by suction filtration, the obtained solid compound is washed 3 times with water and absolute ethanol, and dried at 60°C to obtain BiOI nanoflowers.

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Abstract

The invention discloses a preparation method and application of a BiOI nanoflower with a three-dimensional layered structure, belonging to the field of nanomaterial synthesis. The invention aims to overcome the defects of relatively complex operation conditions, relatively tedious process, difficulty in control of reaction conditions, high cost, tedious post-treatment, inconvenience in expanded production and the like in traditional BiOI preparation methods. The preparation method disclosed by the invention comprises the following steps: adding bismuth nitrate pentahydrate into organic alcohol, carrying out uniform mixing under stirring, adding HI with equal molar weight, continuing stirring for a certain period of time, carrying out a solvothermal reaction to obtain a clear transparent solution, adding a proper amount of water to quickly generate yellow solid, filtering the obtained yellow solid, and carrying out cleaning and drying to obtain the BiOI nanoflower. The method has the advantages of simple preparation process, short reaction time, no need for a surfactant, easiness in industrial large-scale production and the like. The BiOI nanoflower disclosed by the invention is used as a photocatalyst.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials; in particular, it relates to a method for preparing BiOI nanoflowers with a three-dimensional layered structure. Background technique [0002] Environment and development are two themes of common concern in today's human society. With the rapid development of industrialization and the improvement of national living standards, people's awareness of environmental protection is also constantly improving. Facing the global environmental pollution problem, the World Commission on Environment and Development put forward the concept of sustainable development. In addition, the energy crisis caused by the massive use of petroleum, coal, and traditional fossil energy forces people to shift their research focus to the research of renewable energy. Photocatalytic materials have two major functions of photo-splitting water to produce hydrogen and photodegrading pollutants. Using photocatalytic materia...

Claims

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Application Information

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IPC IPC(8): B01J27/06C01G29/00C02F1/30C02F101/30C02F101/38C02F103/34
CPCB01J27/06C01G29/00C02F1/30C02F2101/308C02F2101/40C02F2101/38C02F2305/10C02F2103/343C01P2004/03C01P2004/04C01P2004/30
Inventor 冯德鑫张显龙咸漠刘卫敏
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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