A visible light responsive nb 2 o 5 /g‑c 3 n 4 Preparation method and use of heterojunction material
A heterojunction and visible light technology, applied in chemical instruments and methods, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of photocatalytic activity and visible light utilization efficiency, and achieve excellent light Catalytic activity, convenient mass production, and low cost effects
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Embodiment 1
[0024] Step 1: Weigh 2.5 g of melamine, place it in an agate mortar, and grind it evenly for 5 minutes to obtain sample A.
[0025] Step 2: Weigh 0.025 g of niobium pentoxide and 2.5 g of melamine respectively, place them in an agate mortar, grind and mix them evenly for 5 minutes, and obtain sample B.
[0026] Step 3: Transfer sample A and sample B to a 50 mL round crucible, cover the crucible and place it horizontally in the muffle furnace, set the initial temperature of the muffle furnace to 50 °C, and increase the temperature at a rate of 2.3 °C / min Raise the temperature of the muffle furnace to 550 °C, and react at this temperature for 4 h, and wait for natural cooling to room temperature to obtain samples A 1 and B 1 .
[0027] Step 4: Separate sample A 1 and B 1 Transfer to an agate mortar and grind for 5 min to finally obtain g-C 3 N 4 and Nb 2 o 5 / g -C 3 N 4 heterojunction samples.
Embodiment 2
[0029]Step 1: Weigh 2.5 g of melamine, place it in an agate mortar, and grind it evenly for 5 minutes to obtain sample A.
[0030] Step 2: Weigh 0.075 g of niobium pentoxide and 2.5 g of melamine respectively, place them in an agate mortar, grind and mix them evenly for 5 minutes, and obtain sample B.
[0031] Step 3: Transfer sample A and sample B to a 50 mL round crucible, cover the crucible and place it horizontally in the muffle furnace, set the initial temperature of the muffle furnace to 50 °C, and increase the temperature at a rate of 2.3 °C / min Raise the temperature of the muffle furnace to 550 °C, and react at this temperature for 4 h, and wait for natural cooling to room temperature to obtain samples A 1 and B 1 .
[0032] Step 4: Separate sample A 1 and B 1 Transfer to an agate mortar and grind for 5 min to finally obtain g-C 3 N 4 and Nb 2 o 5 / g -C 3 N 4 heterojunction samples.
Embodiment 3
[0034] Step 1: Weigh 2.5 g of melamine, place it in an agate mortar, and grind it evenly for 5 minutes to obtain sample A.
[0035] Step 2: Weigh 0.125 g of niobium pentoxide and 2.5 g of melamine respectively, place them in an agate mortar, grind and mix evenly for 5 minutes, and obtain sample B.
[0036] Step 3: Transfer sample A and sample B to a 50 mL round crucible, cover the crucible and place it horizontally in the muffle furnace, set the initial temperature of the muffle furnace to 50 °C, and increase the temperature at a rate of 2.3 °C / min Raise the temperature of the muffle furnace to 550 °C, and react at this temperature for 4 h, and wait for natural cooling to room temperature to obtain samples A 1 and B 1 .
[0037] Step 4: Separate sample A 1 and B 1 Transfer to an agate mortar and grind for 5 min to finally obtain g-C 3 N 4 and Nb 2 o 5 / g -C 3 N 4 heterojunction samples.
[0038] By adjusting the mass ratio of adding different niobium pentoxide and m...
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