Multi-morphologic Ho/BiVO4 composite photocatalyst, and preparation method and application thereof
A composite light and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of inability to produce hydrogen from reduced water, photocatalytic performance limitations Limited application and other problems, to achieve good application prospects, high photocatalytic activity, and easy operation
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Embodiment 1
[0032] Multi-morphology Ho / BiVO 4 Composite photocatalyst whose main component is BiVO 4 , is a tetragonal zircon phase structure, and BiVO 4 The lattice contains Ho 3+ , wherein the molar ratio of Ho element to Bi element is 2.04:100.
[0033] Multi-morphology Ho / BiVO 4 The preparation method of composite photocatalyst comprises the following steps:
[0034] 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(NO3 ) 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 100°C for 20min to obtain NH 4 VO 3 Concentration is the vanadium salt solution of 0.4mol / L;
[0035] 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;
[0036] Step 3: Add dropwise NaOH solution with a concent...
Embodiment 2
[0041] Multi-morphology Ho / BiVO 4 Composite photocatalyst whose main component is BiVO 4 , is a tetragonal zircon phase structure, and BiVO 4 The lattice contains Ho 3+ , wherein the molar ratio of Ho element to Bi element is 4.17:100.
[0042] Multi-morphology Ho / BiVO 4 The preparation method of composite photocatalyst comprises the following steps:
[0043] 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;
[0044] 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;
[0045] Step 3: Add dropwise NaOH solution with a concen...
Embodiment 3
[0051] Multi-morphology Ho / BiVO 4 Composite photocatalyst whose main component is BiVO 4 , is a tetragonal zircon phase structure, and BiVO 4 The lattice contains Ho 3+ , wherein the molar ratio of Ho element to Bi element is 6.38:100.
[0052] Multi-morphology Ho / BiVO 4 The preparation method of composite photocatalyst comprises the following steps:
[0053] 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;
[0054] 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;
[0055] Step 3: Add dropwise NaOH solution with a concen...
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