A kind of preparation method of gold-loaded iron oxide nanometer photocatalyst
A nano-iron oxide, photocatalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of harsh experimental conditions and complex experimental methods, etc. To achieve the effect of simple preparation method, good repeatability and high photocatalytic activity
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Embodiment 1
[0013] A preparation method of a gold-supported iron oxide nano photocatalyst, comprising the steps of:
[0014] (1) Weigh 0.3243 g (0.02 M) of ferric chloride hexahydrate and 0.49218 g (0.1 M) of anhydrous sodium acetate, mix them into 60 mL of deionized water, and stir until completely dissolved to obtain a precursor solution; The body solution was placed in a reaction kettle, heated to 250°C, and kept for 5 hours; cooled to room temperature, the resulting product was added to deionized water and alcohol, fully oscillated, and centrifuged. The centrifugal speed in the centrifuged step was 8000rad / min, and Three times, each time for 3 minutes, the supernatant was removed to obtain iron oxide nanoparticles with a diameter of about 30 nm, and its absorption spectrum is shown in a in Fig. 3 . It was then dispersed in 100 mL of ethanol for use. (2) Take 2.5 mL from 100 mL of the solution described in step (1), add 1 mL of ammonia water, and after standing still for 1 h, add 4.9 ...
Embodiment 2
[0016] A preparation method of a gold-supported iron oxide nano photocatalyst, comprising the steps of:
[0017](1) Weigh 0.3243 g (0.02 M) of ferric chloride hexahydrate and 2.6 mg (0.3 mM) of sodium dihydrogen phosphate, mix them into 60 mL of deionized water, and stir until completely dissolved to obtain a precursor solution; The bulk solution was placed in a reaction kettle, heated to 230 °C, and kept for 5 h. Cool to room temperature, add deionized water and alcohol to the resulting product, fully oscillate and centrifuge. In the centrifugation step, the centrifugation speed is 5000rad / min, centrifuge 3 times, each time for 3min, remove the supernatant, and obtain a length of about 200 nm iron oxide nanorods with an aspect ratio of about 2, and then dispersed in 100 mL of alcohol for use. (2) Take 2.5 mL of the solution described in (1) from 100 mL, add 1 mL of ammonia water, and after standing still for 1 h, add 4.9 mg (0.09 M) of p-mercaptobenzoic acid and stir for 30 ...
Embodiment 3
[0019] A preparation method of a gold-supported iron oxide nano photocatalyst, comprising the steps of:
[0020] (1) Weigh 0.3243 g (0.02 M) of ferric chloride hexahydrate and 11.9 mg (1.4 mM) of sodium dihydrogen phosphate, mix them into 60 mL of deionized water, and stir until completely dissolved to obtain a precursor solution; The bulk solution was placed in a reaction kettle, heated to 250 °C, and kept for 5 h. Cool to room temperature, add deionized water and alcohol to the obtained product, fully shake and centrifuge. In the centrifugation step, the centrifugation speed is 4000rad / min, centrifuge 3 times, each time for 3min, and remove the supernatant to obtain a layered cake , with a diameter of about 150 nm. It was then dispersed in 100 mL of ethanol for use. (2) Take 2.5 mL of the solution described in (1) from 100 mL, add 1 mL of ammonia water, and after standing still for 1 h, add 4.9 mg (0.09 M) of p-mercaptobenzoic acid and stir for 30 min, then add the obtaine...
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