Z-scheme CuO/FeO/GO heterojunction photocatalyst: Enhanced photocatalytic performance for elimination of tetracycline.

CuO/FeO/GO, as a Z-scheme heterojunction catalyst, was successfully synthesized and used as a photocatalyst for removing tetracycline from aqueous solution. The CuO/FeO/GO heterogeneous catalyst combines the narrow bandgap semiconductor CuO, oxygen vacancies of FeO, and oxygen-containing reaction sites of GO. Without the addition of activators (persulfate or HO), the photocatalytic performance on decomposing tetracycline is very excellent.

Gemini surfactant: A novel flotation collector for harvesting of microalgae by froth flotation.

Froth flotation has been proved to be a promising approach for commercial scale harvesting of microalgae. However, all the surfactants used in the microalgae flotation harvesting process are conventional monomeric surfactants contain a single similar hydrophobic group in the molecule, which results in a low harvesting efficiency. In this work, a novel Gemini surfactant, N,N'-bis(cetyldimethyl)-1,4-butane diammonium dibromide (BCBD) was prepared, and originally recommended as a collector for froth flotation harvesting of Chlorella vulgaris from culture medium.

Morpholine-Based Gemini Surfactant: Synthesis and Its Application for Reverse Froth Flotation of Carnallite Ore in Potassium Fertilizer Production.

Potassium fertilizer plays a critical role in increasing the food production. Carnallite is concentrated by reverse froth flotation and used as a raw material to produce potassium fertilizer (KCl) in agriculture. However, all the surfactants used in the carnallite reverse flotation process are conventional monomeric surfactants contain a single similar hydrophobic group in the molecule, which results in a low production efficiency.