Dy/BiVO4 photocatalyst as well as preparation method and application thereof
A technology of photocatalyst and reactor, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low photogenerated electron and hole separation efficiency, photocatalytic Unsatisfactory effect, complex process and other problems, to achieve the effect of short preparation cycle, improved photocatalytic performance, and simple process flow
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Embodiment 1
[0031] A Dy / BiVO 4 Photocatalyst whose main component is BiVO 4 , is a tetragonal zircon structure, and BiVO 4 The lattice contains Dy 3+ , wherein the molar ratio of Dy element to Bi element is 2.04:100.
[0032] A Dy / BiVO 4 The preparation method of photocatalyst comprises the following steps:
[0033] Step 1: Bi(NO 3 ) 3 ·5H 2 O was dissolved in deionized water and stirred on a magnetic stirrer for 20 min to obtain Bi(NO 3 ) 3 ·5H2 Bismuth salt solution with O concentration of 0.4mol / L; NH 4 VO 3 Dissolve in deionized water at 100°C, heat and stir at 100°C for 20min to obtain NH 4 VO 3 Concentration is the vanadium salt solution of 0.4mol / L;
[0034] Step 2: slowly drop the vanadium salt solution into the bismuth salt solution according to the molar ratio of Bi and V of 1:1, and stir on a magnetic stirrer for 15 minutes to obtain a mixed solution;
[0035] Step 3: Add dropwise NaOH solution with a concentration of 5 mol / L to the mixture at a rate of 1 mL / min, ...
Embodiment 2
[0040] A Dy / BiVO 4 Photocatalyst whose main component is BiVO 4 , is a tetragonal zircon structure, and BiVO 4 The lattice contains Dy 3+ , wherein the molar ratio of Dy element to Bi element is 4.17:100.
[0041] A Dy / BiVO 4 The preparation method of photocatalyst comprises the following steps:
[0042] Step 1: Bi(NO 3 ) 3 ·5H 2 O was dissolved in deionized water and stirred on a magnetic stirrer for 20 min to obtain Bi(NO 3 ) 3 ·5H 2 Bismuth salt solution with O concentration of 0.4mol / L; NH 4 VO 3 Dissolve in deionized water at 100°C, heat and stir at 90°C for 20min to obtain NH 4 VO 3 Concentration is the vanadium salt solution of 0.4mol / L;
[0043] Step 2: Slowly add the vanadium salt solution dropwise to the bismuth salt solution by the molar ratio of Bi and V as 1:1, and stir for 15min on a magnetic stirrer to obtain a mixed solution;
[0044] Step 3: Add dropwise NaOH solution with a concentration of 5 mol / L to the mixture at a rate of 0.5 mL / min, adjust...
Embodiment 3
[0049] A Dy / BiVO 4 Photocatalyst whose main component is BiVO 4 , is a tetragonal zircon structure, and BiVO 4 The lattice contains Dy 3+ , wherein the molar ratio of Dy element to Bi element is 6.38:100.
[0050] A Dy / BiVO 4 The preparation method of photocatalyst comprises the following steps:
[0051] Step 1: Bi(NO 3 ) 3 ·5H 2 O was dissolved in deionized water and stirred on a magnetic stirrer for 20 min to obtain Bi(NO 3 ) 3 ·5H 2 Bismuth salt solution with O concentration of 0.4mol / L; NH 4 VO 3 Dissolve in deionized water at 100°C, heat and stir at 95°C for 20min to obtain NH 4 VO 3 Concentration is the vanadium salt solution of 0.4mol / L;
[0052] Step 2: slowly drop the vanadium salt solution into the bismuth salt solution according to the molar ratio of Bi and V of 1:1, and stir on a magnetic stirrer for 15 minutes to obtain a mixed solution;
[0053] Step 3: Add dropwise NaOH solution with a concentration of 5 mol / L to the mixed solution at a rate of 0....
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