Preparation method of Bi<3.64>Mo<0.36>O<6.55> nanometer particles and nanometer material made of Bi<3.64>Mo<0.36>O<6.55> nanometer particles

A nanoparticle and nanomaterial technology, which is applied in the preparation of Bi3.64Mo0.36O6.55 nanoparticle and its Bi3.64Mo0.36O6.55 nanomaterial, can solve the problem of less than 60% pass rate, pollution of rivers, lakes and seas, Dye wastewater treatment rate is less than 30% and other issues

Inactive Publication Date: 2013-12-04
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the domestic dye wastewater treatment rate is less than 30%, and the qualified rate is less than 60%, causing serious pollution to rivers, lakes, seas, etc.
Gopal Das used magnetic iron oxide nanoparticles to study the adsorption of different dyes, and found that the adsorption capacity of organic ...

Method used

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  • Preparation method of Bi&lt;3.64&gt;Mo&lt;0.36&gt;O&lt;6.55&gt; nanometer particles and nanometer material made of Bi&lt;3.64&gt;Mo&lt;0.36&gt;O&lt;6.55&gt; nanometer particles
  • Preparation method of Bi&lt;3.64&gt;Mo&lt;0.36&gt;O&lt;6.55&gt; nanometer particles and nanometer material made of Bi&lt;3.64&gt;Mo&lt;0.36&gt;O&lt;6.55&gt; nanometer particles
  • Preparation method of Bi&lt;3.64&gt;Mo&lt;0.36&gt;O&lt;6.55&gt; nanometer particles and nanometer material made of Bi&lt;3.64&gt;Mo&lt;0.36&gt;O&lt;6.55&gt; nanometer particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh an appropriate amount (0.00001~1mol) of bismuth salt and dissolve it in a certain amount (2~30ml) of water, and add a certain concentration (5~90%) of nitric acid solution under magnetic stirring conditions; add an appropriate amount (0.0001~2mol) of molybdic acid The salt solution is dissolved in the above solution, and the pH of the solution is adjusted with a certain concentration (1~27%) of ammonia water; then the mixed solution is poured into a crucible, and reacted by microwave. The resulting substance was washed several times with water and absolute ethanol successively, and then dried.

[0029] The molar ratio of bismuth salt and molybdate is (0.1~2):(0.5~8); microwave frequency: (20~230)W; microwave time: (0~60)min; pH=(1~14). The obtained particle size is in the size of 10-20nm Bi 3.64 Mo 0.36 o 6.55 Nano spherical particles.

Embodiment 2

[0031] From figure 1 It can be seen that when S-2 is adsorbed for 30 minutes, the adsorption rate of MB is 91.6%. Under the same adsorption time, the adsorption rate of B-Rh.B is only about 4.3%. The adsorption rate of MO, salicylic acid and p-nitroaniline The adsorption rate is basically 0, indicating that Bi 3.64 Mo 0.36 o 6.55 It has high selective adsorption for methylene blue (MB).

[0032] figure 2 It is the adsorption of different dyes by the S-2 sample under different pH conditions. From figure 2It can be seen from (a) that when S-2 is adsorbed at pH = 7 for 30 min, the adsorption rate of B-Rh.B is only 4.3%, and it basically does not adsorb MO. When S-2 was adsorbed at pH=12 for 30 min, neither B-Rh.B nor MO was adsorbed. However, when S-2 was adsorbed at pH=7 and 12 for 30 minutes, the adsorption rate P of MB could reach 91.6% and 13.2%, respectively. It shows that S-2 has a better adsorption capacity for MB than B-Rh.B and MO under neutral and alkaline con...

Embodiment 3

[0034] Table 1. Bi 3.64 Mo 0.36 o 6.55 The effect table of the adsorption amount of methylene blue on the sample at a certain moment at 25°C

[0035]

[0036] From Table 1 and image 3 It can be seen that the three products have extremely high adsorption effects on common dyes. The methylene blue is almost completely adsorbed within 2 minutes, and the equilibrium adsorption amount increases by less than 0.4mg / g from 2 minutes to 10 minutes. The adsorption capacities of S-3 and S-1 were almost the same, and the adsorption amount reached about 1746 mg / g within 2 min. The equilibrium adsorption capacity of S-2 reached 993.5 mg / g at 2 minutes, and the equilibrium adsorption capacity only increased by 0.5 mg / g from 2 minutes to 10 minutes, but the adsorption capacity of S-2 was smaller than that of S-1 and S-3 much.

[0037] Table 2. Three kinetic model parameters for the adsorption of methylene blue by S-1, S-2, and S-3 at 25 °C

[0038]

[0039] Figure 4 Three adsor...

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Abstract

The invention relates to a preparation method of Bi<3.64>Mo<0.36>O<6.55> nanometer particles and a nanometer material made of the Bi<3.64>Mo<0.36>O<6.55> nanometer particles. The preparation method comprises the following steps: weighing proper amount of bismuth salt and dissolving the bismuth salt in certain amount of water, and under the condition of magnetic stirring, adding a nitric acid solution with certain concentration; dissolving proper amount of molybdate in the obtained solution, and adjusting the pH value with ammonia water with certain concentration; pouring the mixed solution into a crucible, and performing microwave reaction. The obtained product is sequentially washed with water and absolute ethyl alcohol for multiple times, and is dried. The bismuth salt is one type from or a mixture of bismuth chloride, bismuth nitrate and bismuth sulfate. The molybdate is one type from or a mixture of ammonium molybdate, potassium molybdate and cadmium molybdate. Through changing of solution pH value, reactant concentration and microwave frequency, the Bi<3.64>Mo<0.36>O<6.55> nanometer particles with different sizes can be obtained. Due to different electric charges on the surfaces of the Bi<3.64>Mo<0.36>O<6.55> nanometer particles, the Bi<3.64>Mo<0.36>O<6.55> nanometer particles are subjected to electrostatic interaction with different ionic pigments, so that the Bi<3.64>Mo<0.36>O<6.55> nanometer particles show high selectivity and high absorption capability in respect of absorbability.

Description

technical field [0001] The present invention relates to a Bi 3.64 Mo 0.36 o 6.55 The preparation method of nanoparticle and its Bi 3.64 Mo 0.36 o 6.55 nanomaterials. Background technique [0002] With the continuous deepening of the industrialization process, the global environmental pollution problem is becoming more and more serious. Textile printing and dyeing, leather, papermaking, plastics, food and other industries discharge a large amount of industrial wastewater every year, and these wastewater enters the water body without good treatment, causing serious pollution to the water body. China is a big textile country, and the textile printing and dyeing industry is also a major player in the discharge of industrial wastewater, accounting for about 35% of the entire industrial wastewater discharge. According to incomplete statistics, the discharge of printing and dyeing wastewater in my country is about 3×106 to 4×106 tons per day, so , the treatment of printing an...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/28B01J20/30C02F1/28C02F1/58
Inventor 彭银陈庆国周海燕
Owner ANHUI NORMAL UNIV
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