Hydrated mesoporous silica coated nano iron-cobalt bimetallic composite material and application thereof

• Main Authors: LI HUI, XIANG MINGHUI, HUANG MAOFANG, HUANG YUAN, WANG WENBING
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2021
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a preparation method of a hydrated mesoporous silica coated nano iron-cobalt bimetallic composite material. The preparation method comprises the following steps: 1, adding 0.496 g of ferric sulfate heptahydrate and 0.502 g of cobalt sulfate heptahydrate into a mixed solution of ethanol and water, and mechanically stirring until solid particles are dissolved; 2, dropwise adding a NaBH4 solution into the mixed solution at a speed of 1.5 ml/min, and continuously stirring for 30 minutes to obtain a nano zero-valent iron-cobalt bimetallic suspension; 3, continuing to add ammonia water and hexadecyl trimethyl ammonium bromide into the suspension, continuously stirring for 30 minutes, adding 1ml of tetraethyl orthosilicate, and stirring for 4 hours at a low speed (300rpm);and 4, separating a solid from a liquid by using a magnet, sequentially washing with deionized water and absolute ethyl alcohol for three times respectively, and finally drying in a drying oven for 12 hours, and obtaining a