Iron-carbon composite material with the function of photocatalytically splitting water into hydrogen by visible light and preparation method
A technology for photo-splitting water for hydrogen production and composite materials, which is applied in chemical instruments and methods, electrolysis processes, electrolysis components, etc., to achieve the effects of simple and easy preparation methods, reduced preparation costs, and easy acquisition.
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Embodiment 1
[0043] Prepare 500 mL of ferric nitrate solution with a concentration of 0.1 mol / L, cut 50 g of cleaned Flammulina velutipes into pieces and soak in it for 10 hours. After soaking, the Flammulina velutipes was filtered and taken out, dried in an oven for 5 hours, and then transferred to a vacuum tube furnace for calcination in a nitrogen atmosphere. The temperature was raised to 800°C and kept for 3 hours, and finally a black iron-carbon composite material was obtained. Its morphology is as figure 1 and figure 2 shown.
[0044] Use a xenon lamp as the light source to test the hydrogen production of the prepared iron-carbon composite material: take 20 mg of the prepared iron-carbon composite material and place it in a 20 mL quartz bottle, add 10 mL of secondary water, ultrasonically disperse it, and place the reaction bottle in an XPA-7 type The photocatalytic reaction was carried out in the photocatalytic reaction apparatus, stirred, irradiated by 1000W Xe lamp for 8h, and ...
Embodiment 2
[0046] Prepare 500 mL of ferric nitrate solution with a concentration of 0.2 mol / L, cut 50 g of cleaned Flammulina velutipes into pieces and soak in it for 5 hours. After soaking, the Flammulina velutipes was filtered and taken out, dried in an oven for 5 hours, and then transferred to a vacuum tube furnace for calcination in a nitrogen atmosphere. The temperature was raised to 700°C and kept for 5 hours, and finally a black iron-carbon composite material was obtained.
Embodiment 3
[0048] Prepare 500 mL of ferric nitrate solution with a concentration of 0.4 mol / L, cut 50 g of cleaned Flammulina velutipes into pieces and soak in it for 2 hours. After soaking, the Flammulina velutipes was filtered and taken out, dried in an oven for 5 hours, and then transferred to a vacuum tube furnace for calcination in a nitrogen atmosphere, heated to 600°C, kept for 7 hours, and finally a black iron-carbon composite material was obtained.
[0049] The iron-carbon composite materials prepared in Examples 2-3 were characterized as in Example 1, and the characterization results were similar to those in Example 1.
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