Preparing method and application of nitro phthalocyanine zinc/sulfur-containing carbon nitride composite catalyst

Abstract

The invention discloses a preparing method and application of a nitro phthalocyanine zinc / sulfur-containing carbon nitride composite catalyst and belongs to the field of preparation of photocatalytic materials. The preparing method of the nitro phthalocyanine zinc / sulfur-containing carbon nitride composite catalyst comprises the following steps that 1, the composite catalyst is prepared, wherein nitro phthalocyanine zinc and sulfur-containing carbon nitride are prepared respectively, then a nitro phthalocyanine zinc / sulfur-containing carbon nitride composite material (ZnTNPc-CNS) is prepared through the dipping method, and a series of composite materials are prepared by adjusting the different sulfur content of the carbon nitride; 2, the property characterization of photocatalytic degradation of the organic pollutant-methylene blue is achieved, wherein the effect of degradation of methylene blue by pure nitro phthalocyanine zinc is not obvious, and the photocatalytic degradation effect is obviously improved after the nitro phthalocyanine zinc is combined with the sulfur-containing carbon nitride. The novel nitro phthalocyanine zinc / sulfur-containing carbon nitride composite material prepared through the method has good methylene blue photocatalytic degradation performance and is an environment-friendly and efficient photocatalyst.

Description

technical field [0001] The invention belongs to the field of photocatalytic degradation of organic pollutants, in particular to a nitrometallic zinc phthalocyanine / sulfur-containing carbon nitride composite catalyst and a preparation method thereof. Background technique [0002] In recent years, photocatalytic technology has developed rapidly, and it is a green technology with important application prospects in the field of pollution control. The mechanism is that under the irradiation of a specific wavelength, the surface of the catalyst is activated and has multiple functions such as oxidative decomposition of organic pollutants, deodorization, and corrosion protection. [0003] The macrocycle of metal phthalocyanine derivatives has two characteristics of electron donor and electron acceptor. Its electron donating ability can be adjusted by changing the central metal ion and the substituents around the phthalocyanine. The central ion of phthalocyanine can interact with oth...

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Problems solved by technology

However, g-C 3 N 4 The bandgap width is large (2.7eV), the absorption light is mainly concentrated in the ultraviolet region (λ<400nm), and the utilization rate of sunlight is low. At the same time, the photogenerated electrons and holes generated after photoexcitation are easy to recombine, and the photocatalytic performance is poor.

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