Abstract
A porous ball-flower-like Co3O4/Fe2O3 heterostructural photocatalyst was synthesized via a facile metal–organic-framework-templated method, and showed an excellent degradation performance in the model molecule rhodamine B under visible light irradiation. This enhanced photocatalytic activity can be attributed to abundant photo-generated holes and hydroxyl radicals, and the combined effects involving a porous structure, strong visible-light absorption, and improved interfacial charge separation. It is notable that the ecotoxicity of the treated reaction solution was also evaluated, confirming that an as-synthesized Co3O4/Fe2O3 catalyst could afford the sunlight-driven long-term recyclable degradation of dye-contaminated wastewater into non-toxic and colorless wastewater.
Highlights
Photocatalysis is recognized as one green and efficient alternative for organic pollutant degradation, where its key issue lies in the facile preparation of highly active and stable photocatalysts [7–10]
As one of the most promising multi-functional materials, metal–organic frameworks (MOFs) are often considered to be novel photocatalysts due to their abundant and editable active sites and large surface area. Some of their defects, such as poor light absorption and metal ion leaching due to an unstable structure, may seriously limit their practical applications [11–13]
4/Fe22O33 heterostructural photocatalyst was by aafacile facileMOF-templated
Summary
Accepted: 8 March 2022Various pollutants in water environments can directly cause serious harm to the lives and health of human beings, animals and plants. The development of water treatment technologies regarding dye degradation has become a top priority. Photocatalysis is recognized as one green and efficient alternative for organic pollutant degradation, where its key issue lies in the facile preparation of highly active and stable photocatalysts [7–10]. As one of the most promising multi-functional materials, metal–organic frameworks (MOFs) are often considered to be novel photocatalysts due to their abundant and editable active sites and large surface area. Some of their defects, such as poor light absorption and metal ion leaching due to an unstable structure, may seriously limit their practical applications [11–13].
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