Establishing And Properties Of Iron And Cobalt Transition Metal Oxide Composite

Nowadays,as the rapid development of industry,industrial wastewater has become by-product of this,which not only hinders the country's sustainable development strategy,but also brings serious human health problems and affects human's survival.Therefore,it is imminent to solve this problem.In this work,two kind of composite materials have been prepared and used as photo catalyst and chemical adsorbent to solve the problem of pollution of organic dyes and heavy metal As.The concrete results are as follows:As the semiconductor photocatalyst,the rGO/Co₃O₄/Co?OH?₂ was successfully prepared by one-step method with high specific surface area.And the photocatalysts with different ratios of GO were prepared,respectively.It was concluded that the pHotocatalytic properties of the composite were the best when the content of GO was 6%.The larger specific surface area gives the material better adsorption performance,providing more active sites for the photocatalytic degradation process,and accelerating the reaction rate on the rGO surface.This makes rGO/Co₃O₄/Co?OH?₂ potential application in dye wastewater treatment.A novel adsorbent,Fe???loaded Fe₃O₄@carboxyl methyl cellulose sodium?CMC?was synthesized for As???removal from aqueous solution.The optimal amount of Fe???loading on Fe₃O₄@CMC was 1.04 mmol g-1 for As???removal.The experimental data was better described by Freundlich.The saturated adsorption capacity was 11 mg g-1 at equilibrium concentration of 10 mg L-1 As???and pH=7.0.Furthermore,the result demonstrated that only 2.4 g L-1 adsorbent was required to reduce the As???from 500 ?g L-1 to <10 ?g L-1.The composite recycling could be facilitated by magnetic,making it promising for use as a separable adsorbent for As???removal.