新型磁性納米材料對低濃度銅離子選擇性檢測與去除
發(fā)布時間:2018-07-17 00:32
【摘要】:本文介紹一種新型有機熒光探針與選擇性螯合劑修飾的核殼結(jié)構(gòu)磁性納米材料(SDMNA),該材料能夠同時檢測與去除水體中低濃度銅離子。通過一系列吸附實驗,發(fā)現(xiàn)SDMNA對低濃度銅離子的檢測與去除具有一定的選擇性和較大的吸附量。吸附等溫線與吸附動力學(xué)被用于研究SDMNA的吸附行為。結(jié)果表明,Freundlich吸附模型和準二級動力學(xué)方程分別能夠較好地擬合吸附等溫線與吸附動力學(xué)曲線。此外,結(jié)果還顯示了SDMNA能在20min內(nèi)便可達到吸附平衡。
[Abstract]:A novel core-shell magnetic nanomaterial (SDMNA) modified by organic fluorescence probe and selective chelating agent is introduced in this paper. This material can simultaneously detect and remove low concentration copper ions in water. Through a series of adsorption experiments, it is found that SDMNA has a certain selectivity and a large amount of adsorption for the detection and removal of low concentration copper ions. Adsorption isotherms and adsorption kinetics are used to study the adsorption behavior of SDMNA. The results show that Freundlich adsorption model and quasi-second-order kinetic equation can fit the adsorption isotherm and adsorption kinetic curve respectively. The results also show that SDMNA can reach adsorption equilibrium in 20min.
【作者單位】: 江蘇省環(huán)境應(yīng)急與事故調(diào)查中心;中海石油環(huán)保服務(wù)(天津)有限公司;蘇州海立藍環(huán)?萍加邢薰;
【分類號】:X52;TB383.1
[Abstract]:A novel core-shell magnetic nanomaterial (SDMNA) modified by organic fluorescence probe and selective chelating agent is introduced in this paper. This material can simultaneously detect and remove low concentration copper ions in water. Through a series of adsorption experiments, it is found that SDMNA has a certain selectivity and a large amount of adsorption for the detection and removal of low concentration copper ions. Adsorption isotherms and adsorption kinetics are used to study the adsorption behavior of SDMNA. The results show that Freundlich adsorption model and quasi-second-order kinetic equation can fit the adsorption isotherm and adsorption kinetic curve respectively. The results also show that SDMNA can reach adsorption equilibrium in 20min.
【作者單位】: 江蘇省環(huán)境應(yīng)急與事故調(diào)查中心;中海石油環(huán)保服務(wù)(天津)有限公司;蘇州海立藍環(huán)?萍加邢薰;
【分類號】:X52;TB383.1
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