Abstract: The invention Belonging to the technical field of graphene oxide loaded photocatalysts, in order to solve the defects of easy aggregation, solubility in water, difficult separation and recovery and the like in phthalocyanine and polyoxometallate serving as a photocatalyst, the invention provides a graphene oxide covalently immobilized metal phthalocyanine catalyst, a preparation method and application thereof. Phthalocyanine and a derivative thereof are covalently bonded to modified graphene oxide to obtain a binary composite catalyst GO/Pc or GO/MPc; or phthalocyanine and a derivative as wellas polyoxometallate POM are loaded to modified graphene oxide together so as to obtain graphene oxide loaded phthalocyanine and POM ternary composite catalyst POM/GO/Pc or POM/GO/MPc. The method is conducive to separation and recovery of the catalyst, and at the same time avoids the easy aggregation defect of phthalocyanine. The graphene oxide covalently immobilized metal phthalocyanine catalystalso has a large specific surface area, expands the light response range, realizes the high catalytic activity of the composite ternary catalytic system under visible light, greatly improves the photoelectron-hole separation, and improves the photocatalytic activity.
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