Preparation method and application of FeS2/g-C3N4 heterojunction material
A g-c3n4, heterojunction technology, applied in chemical instruments and methods, water/sludge/sewage treatment, chemical/physical processes, etc., can solve carcinogenic secondary pollutants, cannot be effectively degraded, not easy to degrade and easily Accumulation and other problems, to achieve the effect of low cost of raw materials, environmental protection and pollution-free preparation process, good removal effect
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[0022] Example 1:
[0023] FeS 2 / g-C 3 N 4 The preparation method of heterojunction material includes the following steps:
[0024] Step 1: Weigh 1g of melamine and place it in a tube furnace, blow in nitrogen, and burn at 550°C for 2 hours (heating rate is 10°C / min) to form a block of g-C 3 N 4 . Then it is fired at 500°C for 2 hours (heating rate is 5°C / min) to produce flake g-C 3 N 4 .
[0025] Step 2: Add 0.025mol FeSO to the 50mL reactor 4 ·7H 2 O, 0.025mol Na 2 S 2 O 3 ·5H 2 O and 0.0125mol sulfur powder, mix well and add 25mL deionized water. Hydrothermal reaction at 180°C for 24 hours in a blast drying oven. After the reaction is over, cool to room temperature, put the obtained black precipitate in a centrifuge tube and wash it with deionized water, dilute sulfuric acid and carbon disulfide several times, and finally vacuum dry at 80°C for 6 hours, which is FeS 2 .
[0026] Step 3: Add 50mL methanol into the beaker, then add 0.05g FeS 2 , Ultrasonic bath for 15 minutes. Af...
Example Embodiment
[0027] Example 2:
[0028] FeS 2 / g-C 3 N 4 The preparation method of heterojunction material includes the following steps:
[0029] Step 1: Weigh out 1g of melamine and place it in a tube furnace, blow in nitrogen, and burn at 560°C for 1.8 hours (heating rate is 10°C / min) to form lump g-C 3 N 4 . Then it is fired at 490℃ for 1.8 hours (heating rate is 5℃ / min) to produce flake g-C 3 N 4 .
[0030] Step 2: Add 0.025mol FeSO to the 50mL reactor 4 ·7H 2 O, 0.025mol Na 2 S 2 O 3 ·5H 2 O and 0.0125mol sulfur powder, mix well and add 25mL deionized water. Hydrothermal reaction at 170°C for 24 hours in a blast drying oven. After the reaction is over, cool to room temperature, put the obtained black precipitate in a centrifuge tube and wash with deionized water, dilute sulfuric acid and carbon disulfide several times, and finally vacuum dry at 70°C for 7 hours, which is FeS 2 .
[0031] Step 3: Add 50mL methanol into the beaker, then add 0.1g FeS 2 , Ultrasonic bath for 20 minutes. After ...
Example Embodiment
[0032] Example 3:
[0033] FeS 2 / g-C 3 N 4 The preparation method of heterojunction material includes the following steps:
[0034] Step 1: Weigh 1g of melamine and place it in a tube furnace, blow in nitrogen, and burn at 550°C for 2 hours (heating rate is 10°C / min) to form a block of g-C 3 N 4 . Then it is fired at 500°C for 2 hours (heating rate is 5°C / min) to produce flake g-C 3 N 4 .
[0035] Step 2: Add 0.025mol FeSO to the 50mL reactor 4 ·7H 2 O, 0.025mol Na 2 S 2 O 3 ·5H 2 O and 0.0125mol sulfur powder, mix well and add 25mL deionized water. Hydrothermal reaction at 180°C for 24 hours in a blast drying oven. After the reaction is over, cool to room temperature, put the obtained black precipitate in a centrifuge tube and wash it with deionized water, dilute sulfuric acid and carbon disulfide several times, and finally vacuum dry at 80°C for 6 hours, which is FeS 2 .
[0036] Step 3: Add 50mL methanol into the beaker, then add 0.15g FeS 2 , Ultrasonic bath for 15 minutes. Af...
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