Photocatalyst material and preparation method thereof
A photocatalyst and raw material technology, applied in separation methods, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of limited solar energy, wide band gap, and low solar conversion efficiency, and achieve strong controllability and easy large-scale production , The effect of simple preparation process
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Embodiment 1
[0035] Dissolve 1g of tantalum pentachloride in 5ml of ethanol and 10ml of the mixed solution, add 5g of anhydrous citric acid, heat and stir at 423K to form a transparent solution, then add the equivalent of strontium nitrate aqueous solution, and heat at 523K until the formation of Brown gel. The brown colloid was transferred to an alumina crucible, and sintered in a muffle furnace at 823K for 10 hours to obtain a white powder. Fully grind the white powder, press the ground sample into a sheet under a pressure of 5 tons, put it into a muffle furnace for calcination at 1372K for 12 hours, and grind it thoroughly after the reaction to obtain a white powder, which is strontium nitrogen tantalate oxide. In an ammonia atmosphere, burn the white powder at 1273K for 10 hours to obtain the nitrogen oxide of strontium tantalate (Sr 4 Ta 2 o 9-x N x ).
[0036] The above strontium tantalate oxynitride samples were subjected to photocatalytic water splitting:
[0037] Cocatalyst...
Embodiment 2
[0044] Dissolve 1g of tantalum pentachloride in 5ml of ethanol and 10ml of the mixed solution, add 5g of anhydrous citric acid, heat and stir at 423K to form a transparent solution, then add the equivalent of strontium nitrate aqueous solution, and heat at 523K until the formation of Brown gel. The brown colloid was transferred to an alumina crucible, and sintered in a muffle furnace at 823K for 10 hours to obtain a white powder. Fully grind the white powder, press the ground sample into a sheet under a pressure of 5 tons, put it into a muffle furnace for calcination at 1372K for 12 hours, and grind it thoroughly after the reaction to obtain a white powder, which is strontium nitrogen tantalate oxide. In an ammonia atmosphere, burn the white powder at 1173K for 10 hours to obtain the nitrogen oxide of strontium tantalate (Sr 4 Ta 2 o 9-x N x ).
Embodiment 3
[0046] Dissolve 1g of tantalum pentachloride in 5ml of ethanol and 10ml of the mixed solution, add 5g of anhydrous citric acid, heat and stir at 423K to form a transparent solution, then add the equivalent of strontium nitrate aqueous solution, and heat at 523K until the formation of Brown gel. The brown colloid was transferred to an alumina crucible, and sintered in a muffle furnace at 823K for 10 hours to obtain a white powder. Fully grind the white powder, press the ground sample into a sheet under a pressure of 5 tons, put it into a muffle furnace for calcination at 1372K for 12 hours, and grind it thoroughly after the reaction to obtain a white powder, which is strontium nitrogen tantalate oxide. In an ammonia atmosphere, burn the white powder at 1373K for 10 hours to obtain the nitrogen oxide of strontium tantalate (Sr 4 Ta 2 o 9-x N x ).
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