Protonated g-C3N4/BiOBr heterojunction photocatalyst and preparation method
A photocatalyst, g-c3n4 technology, applied in the field of photocatalytic materials, achieves the effects of high removal efficiency, good application prospects and strong operability
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[0035] The preparation method of the present invention includes the following steps:
[0036] 1) Protonated g-C 3 N 4 Preparation: g-C 3 N 4 The precursor is moved into a semi-closed alumina crucible, placed in a muffle furnace and calcined in air to obtain g-C 3 N 4 Photocatalyst particles. Weigh g-C 3 N 4 The photocatalyst particles are dispersed in a hydrochloric acid solution, stirred at room temperature for 3-5 hours, and then washed with deionized water to neutrality. The light yellow g-C 3 N 4 The photocatalyst particles are dried in an oven to obtain protonated g-C 3 N 4 catalyst of light.
[0037] 2) The protonated g-C of the flower globule response to visible light 3 N 4 / BiOBr heterojunction photocatalyst preparation: weigh the protonated g-C 3 N 4 The photocatalyst and bismuth nitrate were dissolved in 100 mL of deionized water, and 9 mL of acetic acid solution was added during stirring. After stirring at room temperature, potassium bromide and 3 mmol of sodium acetate w...
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[0049] Example 1
[0050] Step 1: Set g-C 3 N 4 The precursor (melamine) is moved into a semi-closed alumina crucible, placed in a muffle furnace and calcined in air to obtain g-C 3 N 4 Photocatalyst particles. Weigh 3g g-C 3 N 4 The photocatalyst particles were dispersed in 60mL hydrochloric acid solution, stirred at room temperature for 3-5h, and then washed with deionized water to neutrality, the light yellow g-C 3 N 4 The photocatalyst particles are dried in an oven to obtain protonated g-C 3 N 4 catalyst of light.
[0051] Step 2: Weigh out 0.03g of protonated g-C 3 N 4 The photocatalyst and 4.78g of bismuth nitrate were dissolved in 100mL of deionized water. 9mL of acetic acid solution was added during stirring. After stirring at room temperature, 1.17g of potassium bromide and 3mmol of sodium acetate were added to the solution. After stirring for 2 hours, aging After reacting for 1 hour, the obtained precipitate was washed 3 times with deionized water and absolute ethanol, a...
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[0052] Example 2
[0053] Step 1: Set g-C 3 N 4 The precursor (urea) is moved into a semi-closed alumina crucible, placed in a muffle furnace and calcined in air to obtain g-C 3 N 4 Photocatalyst particles. Weigh 3g g-C 3 N 4 The photocatalyst particles were dispersed in 60mL hydrochloric acid solution, stirred at room temperature for 3-5h, and then washed with deionized water to neutrality, the light yellow g-C 3 N 4 The photocatalyst particles are dried in an oven to obtain protonated g-C 3 N 4 catalyst of light.
[0054] Step 2: Weigh out 0.1g of protonated g-C 3 N 4 The photocatalyst and 3.19g of bismuth nitrate were dissolved in 100mL of deionized water. 9mL of acetic acid solution was added during the stirring. After stirring at room temperature, 0.78g of potassium bromide and 3mmol of sodium acetate were added to the solution. After stirring for 2 hours, aging was performed After reacting for 1 hour, the obtained precipitate was washed 3 times with deionized water and absolu...
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