Activated carbon supported cobalt oxide catalyst and application of same in organic pollutant degradation
A technology of cobalt oxide and activated carbon is applied in the field of preparation of activated carbon-supported cobalt oxide catalyst, which can solve the problems of serious environmental pollution and difficult recovery of catalyst, and achieve the effects of high catalytic activity, good decolorization effect and mild reaction conditions.
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[0025] Example one: Preparation of a catalyst with a cobalt content of 10wt% (cobalt / activated carbon) and activation of persulfate to treat organic wastewater.
[0026] The method includes the following steps:
[0027] (1) After immersing the activated carbon in a 10wt% nitric acid solution for 24 hours, filter and wash with deionized water to neutral;
[0028] (2) The activated carbon treated in step (1) is immersed in a 10wt% sodium hydroxide solution for 24 hours, filtered and washed with deionized water until it is neutral; placed in an oven, dried at 90-100°C, and set aside.
[0029] (3) Add 1 g of activated carbon to 50 ml containing 1.697 10 -3 mol cobalt ion solution;
[0030] (4) Immerse the resulting solution at 30~50℃ for 24h;
[0031] (5) Dry the obtained solid at 100℃ for 12h;
[0032] (6) The obtained metal salt-loaded sample is transferred into a tube furnace, heated to 300-500°C in a nitrogen atmosphere, and calcined for 4-6 h. The resulting product is reduced to room t...
Example Embodiment
[0034] Embodiment two: The preparation of a catalyst with a cobalt content of 1w% (cobalt / activated carbon) is combined with ultraviolet light and persulfate to treat organic wastewater.
[0035] The method includes the following steps:
[0036] (1) After immersing 300 mesh activated carbon with 10wt% nitric acid solution for 24 hours, filter and wash with deionized water to neutral;
[0037] (2) The activated carbon treated in step (1) is immersed in a 10wt% sodium hydroxide solution for 24 hours, filtered and washed with deionized water until it is neutral; placed in an oven, dried at 90-100°C, and set aside.
[0038] (3) Add 1 g of activated carbon to 50 ml containing 1.697 10 -4 mol cobalt ion solution;
[0039] (4) Immerse the resulting solution at 30~50℃ for 24h;
[0040] (5) Dry the obtained solid at 120℃ for 12h;
[0041] (6) The obtained metal salt-loaded sample is transferred into a tube furnace, heated to 300~500°C in a nitrogen atmosphere, and calcined for 4~6h, and the re...
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