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Photocatalysis use of compound YMO3(M=In,Al)
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A photocatalytic and compound technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical/physical process, etc., to achieve the effect of stable structure, strong light absorption ability and stable photocatalytic activity
Inactive Publication Date: 2011-05-18
UNIV OF SCI & TECH OF CHINA
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However, due to TiO 2 The band gap is too wide, resulting in TiO 2 Only absorbs light in the ultraviolet range
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Embodiment 1
[0018] (1) Weigh 2.75 grams of Y (NO 3 ) 3 , 3.819 grams 2.5 g organic fuel C 2 h 5 NO 2 , put it into a 100ml beaker, add 50ml of deionized water, stir for 30 minutes to make it evenly mixed, and then let the solution stand at room temperature for 24 hours;
[0019] (2) Take about 20 ml of the above solution and place it in a 100 ml beaker, and place the beaker at 200°C for 30 minutes at a constant temperature;
[0020] (3) Then slowly heat up to 300°C at a rate of 3°C / min to fully burn the solution in the container to obtain fluffy YInO 3 Powder;
[0021] (4) Put the above combustionpowder at 1100°C for 10 hours to get the finished product YInO 3 .
[0022] Carry out X-raydiffraction (being called for short XRD) test to this finished product, its result is shown in figure 1 . figure 1 YInO before the reaction in 3 The curve shows that the synthesized sample is a pure phase of YInO 3 .
Embodiment 2
[0024] (1) Weigh 2.75 grams of Y (NO 3 ) 3 , 3.751 grams of Al(NO 3 ) 3 9H 2 O, 2.5 grams of organic fuel C 2 h 5 NO 2 , put into a 100 ml beaker, add 50 ml of deionized water, stir for 30 minutes, then let the solution stand at room temperature for 24 hours;
[0025] (2) Take about 20 ml of the above solution and place it in a 100 ml beaker, and place the beaker at 200°C for 30 minutes at a constant temperature;
[0026] (3) Then slowly heat up to 300°C at a rate of 3°C / min to fully burn the solution in the container to obtain fluffy YAlO 3 Powder;
[0027] (4) Put the above combustion powder at 1100°C for 10 hours to get the finished product YAlO 3 .
[0028] figure 1 YAlO before the reaction in 3 The curve is the X-raydiffraction pattern of the synthesized sample, indicating that the synthesized sample is a pure-phase perovskite-type YAlO 3 .
[0029] figure 2 for YInO 3 and YAlO 3photocatalytic activity results. In the test experiment, a 150W halogen tu...
Embodiment 3
[0032] (1) Weigh 5.50 grams of Y(NO 3 ) 3 , 7.638 grams 5.0 g organic fuel C 2 h 5 NO 2 , put into a 250 ml beaker, add 100 ml of deionized water, stir for 60 minutes, then let the solution stand at room temperature for 12 hours;
[0033] (2) Take about 30 ml of the above solution and place it in a 100 ml beaker, and place the beaker at 150° C. for 60 minutes at a constant temperature;
[0034] (3) Then slowly increase the temperature to 350°C at a rate of 4°C / min to fully burn the solution in the container to obtain fluffy YInO 3 Powder, put the powder at 1020 ° C for 12 hours to get the finished product YInO 3 .
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Abstract
The invention relates to preparation of a photocatalysis material and application thereof in the aspect of treating environment pollution. The material is a compound YMO3, wherein M is In or Al, the structure of YAlO3 is in perovskite form, and the YInO3 is (Y0.5In0.5)2O3 with a cubic phase. Yttriumnitrate and indiumnitrate or aluminum nitrate as oxidants and organic carboxylic acid amino acetic acid as a fuel are combusted at a low temperature of 300 and 400 DEG C in deionized water or distilled aqueous solution to generate oxidation-reduction reaction so as to form a nano-scale powder compound, and the nano-scale powder compound is baked for 1 to 12 hours at a temperature between 1,000 and 1,200 DEG C to form YInO3 or YAlO3. The photocatalysis material has low impurity content, stable structure, stable light absorption capability in visual light wavebands and application of optically degrading organic pollutants under the condition of visual light, is a photocatalyst for purifying environment without ultraviolet rays, and can meet the demand of photocatalysis purification in the indoor environment without ultraviolet rays.
Description
technical field [0001] The invention relates to a photocatalyst material for controlling environmental pollution and its preparation, and also relates to a low-temperature combustion synthesis technology. Background technique [0002] With the development of industry and the improvement of people's living standards, the issue of environmental pollution has been put on the very important agenda, and the development of new technologies for environmental governance and environmental protection with high efficiency, energy saving, and no secondary pollution has attracted people's attention. Among various new technologies, photocatalytic technology is one of the most promising environmentally friendly and clean new technologies in the 21st century. It is a process of decomposing organic matter or decomposing water by using the energy of light absorbed by photocatalysts. The mechanism is that the electrons in the semiconductorvalence band are excited by light to transition to the...
Claims
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Application Information
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