A preparation method of heterojunction of perovskite phase lead titanate single crystal nanowire and anatase phase titanium dioxide
A phase lead titanate, single crystal nanotechnology, applied in the field of inorganic non-metallic materials, can solve problems such as large forbidden band width, and achieve the effects of low cost, easy control and no pollution
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Embodiment 1
[0019] 1) Dissolve tetra-n-butyl titanate in 25ml ethanol to make Ti 4+ Ethanol solution with a concentration of 0.035mol / L, and stirred until completely dissolved;
[0020] 2) Add pre-perovskite phase lead titanate single-crystal nanowires to the ethanol solution of tetra-n-butyl titanate prepared in step 1), so that tetra-n-butyl titanate and pre-perovskite phase lead titanate The molar ratio is 0.267:1, and stirred and mixed evenly to obtain a suspension;
[0021] 3) Add the suspension prepared in step 2) into the inner tank of the reactor, add 5ml of ammonia water with a mass concentration of 30% under stirring, after stirring and mixing evenly, add deionized water to adjust the volume of the reaction material in the inner tank of the reactor Reach 70% of the volume of the inner tank of the reactor, and stir again to mix evenly;
[0022] 4) Put the reactor liner equipped with reaction materials in step 3) into the reactor, seal it, and react at 200°C for 12 hours, let th...
Embodiment 2
[0025] 1) Dissolve tetra-n-butyl titanate in 25ml ethanol to make Ti 4+ Ethanol solution with a concentration of 0.047mol / L, and stirred until completely dissolved;
[0026] 2) Add pre-perovskite phase lead titanate single-crystal nanowires to the ethanol solution of tetra-n-butyl titanate prepared in step 1), so that tetra-n-butyl titanate and pre-perovskite phase lead titanate The molar ratio is 0.356:1, and stirred and mixed evenly to obtain a suspension;
[0027] 3) Add the suspension prepared in step 2) into the inner tank of the reactor, add 5ml of ammonia water with a mass concentration of 30% under stirring, after stirring and mixing evenly, add deionized water to adjust the volume of the reaction material in the inner tank of the reactor Reach 70% of the volume of the inner tank of the reactor, and stir again to mix evenly;
[0028] 4) Put the reactor liner equipped with reaction materials in step 3) into the reactor, seal it, and react at 200°C for 12 hours, let th...
Embodiment 3
[0031] 1) Dissolve tetra-n-butyl titanate in 25ml ethanol to make Ti 4+ Ethanol solution with a concentration of 0.059mol / L, and stirred until completely dissolved;
[0032] 2) Add pre-perovskite phase lead titanate single-crystal nanowires to the ethanol solution of tetra-n-butyl titanate prepared in step 1), so that tetra-n-butyl titanate and pre-perovskite phase lead titanate The molar ratio is 0.445:1, and stirred and mixed evenly to obtain a suspension;
[0033] 3) Add the suspension prepared in step 2) into the inner tank of the reactor, add 5ml of ammonia water with a mass concentration of 30% under stirring, after stirring and mixing evenly, add deionized water to adjust the volume of the reaction material in the inner tank of the reactor Reach 70% of the volume of the inner tank of the reactor, and stir again to mix evenly;
[0034] 4) Put the reactor liner equipped with reaction materials in step 3) into the reactor, seal it, and react at 200°C for 12 hours, let th...
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