Titanium dioxide ultraviolet light photocatalyst supported by nickel carbonate and preparation method thereof
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A technology of titanium dioxide and photocatalyst, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of reducing the cost of raw materials, scarcity, and expensive
Inactive Publication Date: 2016-06-29
武汉钢铁有限公司
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Problems solved by technology
The invention solves the problem of expensive and scarce co-catalysts (Pt, Pd, Ru, Au, Ag) and reduces the cost of raw materials
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Embodiment 1
[0023] A preparation method of titanium dioxide ultraviolet light photocatalyst supported by nickel carbonate, comprising the following steps:
[0024] 1) Take by weighing 1g of titanium dioxide, 0.2g of sodium carbonate and 0.002g of nickel nitrate according to the above weight fraction ratio, and set aside;
[0025] 2) dissolving the sodium carbonate obtained in step 1) in water to obtain an aqueous sodium carbonate solution with a molar concentration of 0.1 to 1.0 mmol / L;
[0026] 3) dispersing titanium dioxide into the aqueous sodium carbonate solution obtained in step 2) to obtain a suspension;
[0027] 4) Slowly add nickel nitrate to the suspension obtained in step 3), stir evenly, wash and stand still, filter with filter paper, and vacuum dry at a temperature of 60-100°C for 4-8 hours to obtain titanium dioxide supported by nickel carbonate An ultraviolet light photocatalyst; wherein, the nickel carbonate is supported on the surface of titanium dioxide, and the weight ...
Embodiment 2
[0029] The preparation method of this embodiment and embodiment 1 is basically the same, the difference is:
[0030] Nickel carbonate-supported titanium dioxide ultraviolet light photocatalyst 2, said photocatalyst comprises 1 part of titanium dioxide, 0.5 part of potassium carbonate, and 0.01 part of nickel sulfate in terms of the weight ratio of raw materials. Nickel carbonate accounts for 0.9% by weight of the photocatalyst.
Embodiment 3
[0032] The preparation method of this embodiment and embodiment 1 is basically the same, the difference is:
[0033] Nickel carbonate-supported titanium dioxide ultraviolet photocatalyst 3, the photocatalyst includes 1 part of titanium dioxide, 0.3 part of sodium carbonate, and 0.015 part of nickel nitrate in terms of the weight ratio of raw materials. Nickel carbonate accounts for 1.5% by weight of the photocatalyst.
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Abstract
The invention discloses a nickel carbonate-supported titanium dioxide ultraviolet light catalyst and a preparation method thereof. The light catalyst comprises the following raw materials in parts by weight: 1 part of titanium dioxide, 0.2-0.5 part of inorganic carbonate and 0.001-0.4 part of inorganic nickel salt. The method comprises the following steps: dissolving inorganic carbonate into water to obtain an inorganic carbonate water solution of which the molar concentration is 0.1-1.0mmol / L; dispersing titanium dioxide into the inorganic carbonate water solution to obtain a suspension; and finally, slowly adding the inorganic nickel salt into the suspension, stirring evenly, washing and standing, filtering by using filter paper, and drying in vacuum at 60-100 DEG C for 4-8 hours so as to obtain the nickel carbonate-supported titanium dioxide ultraviolet light catalyst. Compared with a traditional supporting technology that a supporter of a transition metal oxide needs to be calcined by using electric energy, the method does not have preparation cost and is free of electric energy] consumption; and the cost for preparing the light catalyst is increased by less than 1 yuan per 500g on the basis of the cost of titanium dioxide.
Description
technical field [0001] The invention relates to an ultraviolet photocatalyst, in particular to a titanium dioxide ultraviolet photocatalyst supported by nickel carbonate and a preparation method thereof. Background technique [0002] Hydrogen has many advantages such as clean energy, high efficiency, and convenient storage and transportation. It is known as the "oil of the future" and has attracted great attention from all over the world. However, the traditional hydrogen production method needs to consume a huge amount of conventional energy, making hydrogen energy too expensive, which greatly limits the promotion and application of hydrogen energy. Until 1972, Fujishima and Honda [1] found in titanium dioxide (TiO 2 ) The phenomenon of photocatalytic water splitting on the electrode makes it one of the most ideal and promising means to use solar photocatalytic water splitting to produce hydrogen among many means of hydrogen energy development. [0003] Although photocat...
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