Preparation method of BiOCl nanometer photocatalyst, prepared photocatalyst, and application of prepared photocatalyst

A nano-photocatalyst and photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc., can solve the problems of easy precipitation of copper ions, cumbersome operation, pollution and waste, and achieve low requirements for preparation equipment, The effect of convenient operation and good stability

Inactive Publication Date: 2017-09-15
WUHAN TEXTILE UNIV
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  • Description
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Problems solved by technology

However, copper ions are easy to precipitate, causing pollution
In order to solve production problems such as cumbersome operation, high cost, pollution and waste, an innovative method for preparing high-efficiency photocatalysts is needed

Method used

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  • Preparation method of BiOCl nanometer photocatalyst, prepared photocatalyst, and application of prepared photocatalyst
  • Preparation method of BiOCl nanometer photocatalyst, prepared photocatalyst, and application of prepared photocatalyst
  • Preparation method of BiOCl nanometer photocatalyst, prepared photocatalyst, and application of prepared photocatalyst

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Embodiment B

[0028] The preparation method of BiOCl nanometer photocatalyst of the embodiment of the present invention, described method comprises the following steps:

[0029] (1) Dissolve bismuth nitrate and sodium carboxymethylcellulose in water, stir evenly to obtain a bismuth-containing mixed solution; the mass dosage ratio of described bismuth nitrate and sodium carboxymethylcellulose is: (0.3-5): 1; the viscosity of the sodium carboxymethylcellulose is: 200-500mPas;

[0030] (2) Adding chloride solution dropwise to the mixed solution obtained in step (1), stirring evenly to obtain a bismuth-containing precursor solution;

[0031] (3) Adjust the pH value of the bismuth-containing precursor solution obtained in step (2) to 5.0-6.5, and stir to form a reactant evenly;

[0032] (4) Reacting the reactant obtained in step (3) at 150-160° C. for 24-30 h to obtain a precipitate; (5) washing and drying the precipitate obtained in step (4) to obtain BiOCl powder.

[0033] The source of bism...

Embodiment 1

[0040] Weigh the Bi(NO 3 ) 3 ·5H 2O and 0.1g sodium carboxymethylcellulose (viscosity: 200-500mPa s) in a beaker, dissolve it with 25mL deionized water and make it mix uniformly to obtain a mixed solution containing bismuth, weigh 2.238gKCl and join in 150ml ultrapure water , ultrasonicated for 30 min, and stirred until uniform to obtain a KCl solution. Slowly titrate 5ml of the prepared KCl solution into the bismuth-containing mixed solution, stir evenly to form a bismuth-containing precursor solution; weigh 5.611g of KOH, dissolve it in 50ml of deionized water, and set aside; use the above-prepared KOH Solution Adjust the pH of the bismuth-containing precursor solution to 6.0, transfer all the bismuth precursor solution to a polytetrafluoroethylene high-pressure reactor, and then put the reactor into an oven at 160°C, and heat it at a constant temperature for 24 hours to obtain precipitation; The precipitate was washed several times with deionized water and ethanol, and t...

Embodiment 2

[0045] Weigh the Bi(NO 3 ) 3 ·5H 2 0 and 0.3g sodium carboxymethylcellulose (viscosity: 200-500mPa s) in a beaker, dissolve it with 25mL deionized water and make it mix uniformly to obtain a mixed solution containing bismuth, weigh 2.238gKCl and join in 150ml ultrapure water , ultrasonicated for 30 min, and stirred until uniform to obtain a KCl solution. Slowly titrate 5ml of the prepared KCl solution into the bismuth-containing mixed solution, stir evenly to form a bismuth-containing precursor solution; weigh 5.611g of KOH, dissolve it in 50ml of deionized water, and set aside; use the above-prepared KOH Solution Adjust the pH of the bismuth-containing precursor solution to 6.0, transfer all the bismuth precursor solution to a polytetrafluoroethylene high-pressure reactor, and then put the reactor into an oven at 160°C, and heat it at a constant temperature for 24 hours to obtain precipitation; The precipitate was washed several times with deionized water and ethanol, and ...

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Abstract

The invention provides a preparation method of a BiOCl nanometer photocatalyst, the prepared photocatalyst, and application of the prepared photocatalyst. The method comprises the following steps: (1) dissolving bismuth nitrate and sodium carboxymethylcellulose into water, stirring evenly to obtain a bismuth containing mixed solution, wherein the mass ratio of the bismuth nitrate to the sodium carboxymethylcellulose is (0.3-5):1, the viscosity of the sodium carboxymethylcellulose is 200-500 mPas; (2) dropwise adding a chloride solution into the mixed solution obtained in the step (1), stirring evenly to obtain a bismuth containing precursor solution; (3) regulating the pH value of the bismuth containing precursor solution obtained in the step (2) to 5.0-6.5, stirring evenly to form a reactant; (4) enabling the reactant to react for 24-30 hours at the temperature of 150-160 DEG C to obtain a precipitate; (5) washing and drying the precipitate obtained in the step (4) to obtain a BiOCl powder. The provided preparation method is simple, green and pollution-free, the preparation cycle is short, the cost is low, and the property and the stability of the prepared photocatalyst are excellent.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst preparation in environmental chemical industry, and in particular relates to a preparation method of BiOCl nanometer photocatalyst, the prepared photocatalyst and its application. Background technique [0002] With the rapid economic growth, environmental pollution and energy shortages are becoming more and more serious, which have become two difficult problems restricting the progress of society. Single crystal TiO since 1972 2 Photolysis of water on the electrode to produce H 2 Since TiO 2 Due to its advantages of cheapness, non-toxicity and stability, it has become the most important catalyst in the field of photocatalysis research. However, TiO 2 It can only utilize the ultraviolet portion of sunlight (sunlight utilization rate is less than 5%), which greatly limits its application under visible light. [0003] Bismuth-based photocatalytic materials have good visible light absorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/10C02F1/30C01G29/00C02F101/30C02F101/34C02F101/36C02F101/38
CPCY02W10/37B01J27/10B01J35/004B01J35/023C01G29/00C01P2002/72C01P2002/84C01P2004/03C02F1/30C02F2101/30C02F2101/34C02F2101/36C02F2101/38C02F2101/40C02F2305/10
Inventor 徐海明夏东升李东亚孙静宇孙磊袁向娟曹刚蔡雨杰
Owner WUHAN TEXTILE UNIV
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