Method for degrading glyphosate in water through light assistance single-atom catalysis
A technology for glyphosate and catalytic degradation, which is applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of high atom utilization rate, single atom agglomeration, and high catalyst cost, and achieve The effect of high atom utilization, high activity and easy promotion
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Embodiment 1
[0033] (1) Synthesis of Cu-imidazole coordination compound (Cu-ICC) by ball milling method, the specific process is:
[0034] Take Cu(NO 3 ) 2 , 2-methylimidazole, PVP (polyvinylpyrrolidone) and methanol were added into an agate bottle, and ball milled at 500rpm for 1h to obtain a Cu-imidazole coordination compound (Cu-ICC); wherein the methanol with a mass percentage concentration of 96% was used as a solvent , methanol and Cu(NO 3 ) 2 The mass ratio is 5:1, Cu(NO 3 ) 2 The mass concentration ratio of :2-methylimidazole:PVP is 1:3:4.
[0035] (2) Synthesis of Cu-ICC / g-C 3 N 4 , the specific process is:
[0036] Take the Cu-imidazole coordination compound in step (1) and melamine (MA) to grind at a mass ratio of 1:1, pass through a 200-mesh sieve, and then place it in a tube furnace under a nitrogen atmosphere at 3°C min -1 The heating rate was raised to 300°C and calcined for 2 hours to obtain the single-atom catalyst Cu-ICC / g-C 3 N 4 .
[0037] (3) Light-assist...
Embodiment 2
[0041] (1) Synthesis of Cu-imidazole coordination compound (Cu-ICC) by ball milling method, the specific process is:
[0042] Take Cu(NO 3 ) 2 , 2-methylimidazole, PVP (polyvinylpyrrolidone) and methanol were added into an agate bottle, and ball milled at 800rpm for 3h to obtain a Cu-imidazole coordination compound (Cu-ICC); wherein the methanol with a mass percentage concentration of 96% was used as a solvent , methanol and Cu(NO 3 ) 2 The mass ratio of Cu(NO 3 ) 2 The mass concentration ratio of :2-methylimidazole:PVP is 3:6:6.
[0043] (2) Synthesis of Cu-ICC / g-C 3 N 4 , the specific process is:
[0044] Take the Cu-imidazole coordination compound in step (1) and melamine (MA) to grind at a mass ratio of 3:1, pass through a 300-mesh sieve, and then place it in a tube furnace under a nitrogen atmosphere at 6°C min -1 The heating rate was raised to 600°C and calcined for 4 hours to obtain the single-atom catalyst Cu-ICC / g-C 3 N 4 .
[0045] (3) Light-assisted sing...
Embodiment 3
[0049] (1) Synthesis of Cu-imidazole coordination compound (Cu-ICC) by ball milling method, the specific process is:
[0050] Take Cu(NO 3 ) 2 , 2-methylimidazole, PVP (polyvinylpyrrolidone) and methanol were added into an agate bottle, and ball milled at 1000rpm for 5h to obtain a Cu-imidazole coordination compound (Cu-ICC); wherein the methanol with a mass percentage concentration of 96% was used as a solvent , methanol and Cu(NO 3 ) 2 The mass ratio is 10:1, Cu(NO 3 ) 2 The mass concentration ratio of :2-methylimidazole:PVP is 5:9:8.
[0051] (2) Synthesis of Cu-ICC / g-C 3 N 4 , the specific process is:
[0052] Take the Cu-imidazole coordination compound in step (1) and melamine (MA) to grind at a mass ratio of 5:1, pass through a 400-mesh sieve, and then place it in a tube furnace under a nitrogen atmosphere at 8 °C min -1 The heating rate was raised to 900°C and calcined for 6 hours to obtain the single-atom catalyst Cu-ICC / g-C 3 N 4 .
[0053] (3) Light-assis...
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