A method for synthesizing anatase/brookite nanocomposites for photolysis of water to produce hydrogen by one-step hydrothermal method
A nanocomposite material, a technology for producing hydrogen by photolysis of water, applied in nanotechnology for materials and surface science, hydrogen production, nanotechnology, etc., can solve the problem of high recombination probability of photogenerated carriers and few surface active sites , poor photocatalytic activity, etc., to achieve the effect of accelerating electron transport, cheap raw materials, and simple operation
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specific Embodiment approach 1
[0020] Embodiment 1: A method for synthesizing anatase / brookite nanocomposite materials for photolysis of water to produce hydrogen by a one-step hydrothermal method in this embodiment, specifically operates according to the following steps:
[0021] 1. Add the alkali solution and the titanium source to the water solvent under stirring conditions, and continue stirring for 30 minutes to obtain the precursor;
[0022] Among them, the mass volume ratio of titanium source and water solvent is 1g:(15-30)mL, and the volume ratio of alkali and titanium source is 1:(0.4-3.4);
[0023] 2. Transfer the precursor obtained in step 1 to a hydrothermal kettle, and place it in a blast drying oven for hydrothermal reaction at a temperature of 120-160°C and a reaction time of 10-24 hours;
[0024] 3. Wash the product after the hydrothermal reaction in step 2, and then ultrasonically disperse it in absolute ethanol; repeatedly wash and ultrasonically disperse 2 times to obtain the product; whe...
specific Embodiment approach 2
[0028] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the feature described in step 1 is that the alkali is a mixed solution of one or more of hydrazine hydrate, ammonia water, cyanamide or hydroxylamine. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0029] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the source of titanium in step one is or titanium oxysulfate, tetrabutyl titanate, titanium tetrachloride, titanium isopropoxide, titanium sulfide, One or more mixtures of titanium tetrafluoride mixed in any ratio. Others are the same as in the first or second embodiment.
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