Enol-ketone covalent organic framework/graphite phase carbon nitride composite photocatalyst and its preparation method and application
A technology of covalent organic framework and graphite phase carbon nitride, which is applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of insufficient light absorption performance, reaction Few active sites, high electron-hole pair recombination rate, etc., to achieve the effect of favorable photocatalytic performance, strong chemical and thermal stability, and improved photocatalytic activity
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Embodiment 1
[0037] A kind of enol-ketone covalent organic framework / graphite carbon nitride composite photocatalyst, including graphite phase carbon nitride and enol-ketone covalent organic framework, enol-ketone covalent organic framework supported on graphite Phase carbon nitride, wherein the mass ratio of graphite phase carbon nitride and enol-ketone covalent organic framework is 1:0.01. Graphite phase carbon nitride is lamellar. The enol-ketone covalent organic framework is fibrous rod-shaped with a diameter of 116nm.
[0038] A preparation method of the enol-ketone covalent organic framework / graphite phase carbon nitride composite photocatalyst in the above-mentioned present embodiment specifically comprises the following steps:
[0039] (1) Put 8g of melamine into a crucible, place it in a muffle furnace, heat it up to 550°C at a heating rate of 2.3°C / min, and keep it at 550°C for 4 hours, take it out after natural cooling, and grind it with a mortar , to obtain a yellow powder sa...
Embodiment 2
[0043] A kind of enol-ketone type covalent organic framework / graphite phase carbon nitride composite photocatalyst, basically the same as embodiment 1, the difference is only: graphite phase carbon nitride and enol-ketone type covalent organic framework in embodiment 2 The mass ratio of the skeleton is 1:0.05.
[0044] A preparation method of the enol-ketone covalent organic framework / graphite phase carbon nitride composite photocatalyst in the above-mentioned embodiment is basically the same as in Example 1, the only difference being that in Example 2 the enol-ketone covalent The dosage of the valent organic framework is 25mg.
[0045] The enol-ketone covalent organic framework / graphite phase carbon nitride composite photocatalyst prepared in Example 2 is named 5% TpMa / CN.
Embodiment 3
[0047] A kind of enol-ketone type covalent organic framework / graphite phase carbon nitride composite photocatalyst, basically the same as embodiment 1, the difference is only: in embodiment 3, graphite phase carbon nitride and enol-ketone type covalent organic framework The mass ratio of the skeleton is 1:0.25.
[0048] A preparation method of the enol-ketone covalent organic framework / graphite phase carbon nitride composite photocatalyst in the above-mentioned embodiment is basically the same as in Example 1, the only difference being that in Example 3 the enol-ketone covalent The dosage of the valent organic framework is 125 mg.
[0049] The enol-ketone covalent organic framework / graphite phase carbon nitride composite photocatalyst prepared in Example 3 is named 25% TpMa / CN.
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