Copper doped niobium potassium compound oxide photocatalyst and preparation process
A composite oxide and photocatalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. The problems of harsh preparation conditions, etc., achieve the effects of good photocatalytic activity, wide calcination temperature range and low cost.
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Embodiment 1
[0037] Step (1) selects raw material Nb 2 o 5 , potassium carbonate, solid copper sulfate, of which Nb 2 o 5 The purity is above 99.5%;
[0038] Step (2) is that the mol ratio of niobium, copper and potassium is 4: 0.007: 2 (being Nb: K=2, Nb: Cu=571) ratio takes by weighing about 10 grams of raw material total amount, fully Grind and mix evenly;
[0039] Step (3) Put it in a porcelain crucible, place it at a temperature of 1000°C, calcinate in an air atmosphere for 2 hours, cool to room temperature, and grind;
[0040] The photocatalyst main phase that step (4) obtains is K 2 Cu 0.007 Nb 4 o 11.007 .
Embodiment 2
[0042] Step (1) selects raw material Nb 2 o 5 , potassium sulfate, solid copper sulfate, of which Nb 2 o 5 The purity is above 99.5%;
[0043] Step (2) is 4:0.021:2 (being Nb:K=2, Nb:Cu=190) ratio by the mol ratio of niobium, copper and potassium and takes by weighing about 10 grams of raw material total amount, fully Grind and mix evenly;
[0044] Step (3) Put it in a high-alumina crucible, place it at a temperature of 1000°C, calcinate in an air atmosphere for 2 hours, cool to room temperature, and grind;
[0045] The photocatalyst main phase that step (4) obtains is K 2 Cu 0.021 Nb 4 o 11.021 .
Embodiment 3
[0047] Step (1) selects raw material Nb 2 o 5 , potassium carbonate, solid copper sulfate, of which Nb 2 o 5 The purity is above 99.5%;
[0048] Step (2) is 4: 0.05: 2 (being Nb: K=2, Nb: Cu=80) ratio by the mol ratio of niobium, copper and potassium and takes by weighing about 10 grams of raw material total amount, fully in agate mortar Grind and mix evenly;
[0049] Step (3) Put it in a porcelain crucible, place it at a temperature of 900°C, calcinate it in an air atmosphere for 2 hours, cool it to room temperature, and grind it;
[0050] The photocatalyst main phase that step (4) obtains is K 2 Cu 0.05 Nb 4 o 11.05 .
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