本文選題：磁流體　切入點：吸附　出處：《遼寧大學》2017年碩士論文　論文類型：學位論文

【摘要】：隨著時代的發(fā)展,具有磁性熒光雙功能性能的復合材料在各個領域有著很大的應用潛力。本文首先利用乳液聚合和熱分解方法成功的合成了具有磁性熒光雙功能的復合粒子α/ZnS和β/ZnS(α為Fe_3O_4-OA/PMMA/P(StNVP)磁性聚合物),β為Fe_3O_4-SC/Si O_2/P(StNVP)磁性聚合物),上述制備的磁性熒光復合粒子通過IR、XRD和粒度分析儀等一系列進行表征。結果表明,復合粒子α/ZnS和β/ZnS具有良好的磁性和熒光性,并且平均粒徑分別為593.6 nm和670.5 nm。將上述制備的α/ZnS和β/ZnS復合粒子在N_2保護下,分別于管式爐中高溫炭化得到兩種不同的磁性熒光碳球C_α/ZnS和C_β/ZnS,通過IR、XRD和氮氣吸附等一系列表征,C_α/ZnS和C_β/ZnS的平均粒徑分別為556.9 nm和596.4 nm;并且分別研究了磁性熒光碳球C_α/ZnS和C_β/ZnS對Cu~(2+)、Ni~(2+)、Co~(2+)、Hg~(2+)、Pb~(2+)和苯酚的吸附能力,考察了接觸時間與溫度對吸附的影響;用準一級和準二級反應方程進行擬合了磁性熒光碳球對Cu~(2+)、Hg~(2+)和苯酚吸附動力學,結果顯示符合二級動力學模型。利用熒光光譜法分析Cu~(2+)和Hg~(2+)對磁性熒光碳球C_α/ZnS和C_β/ZnS熒光猝滅的關系。結果顯示:Cu~(2+)和Hg~(2+)濃度在40-120 mg/L之間,加入0.01g的磁性熒光碳球,C_α/ZnS或C_β/ZnS熒光強度之差(F_0-F)與Cu~(2+)和Hg~(2+)濃度有著良好的線性關系。此方法C_α/ZnS和C_β/ZnS檢測Cu~(2+)濃度檢出限分別為2.75 mg/L和5.53 mg/L;檢測Hg~(2+)濃度檢出限分別為3.92mg/L和4.36 mg/L。
[Abstract]:With the development of the times, The composite materials with magnetic fluorescence bifunctional properties have great application potential in various fields. Firstly, the composite particles 偽 / ZnS and 尾 / ZnS (偽) with magnetic fluorescence bifunctional have been successfully synthesized by emulsion polymerization and thermal decomposition. For Fe3O4-OAP / PMMA / Fe_3O_4-SC/Si / P / P / P / P / P / P / P, the magnetic polymer, Fe_3O_4-SC/Si O / P / P / P / P, the magnetic fluorescent composite particles were characterized by a series of IR XRD and particle size analyser. The results show that, The composite particles 偽 / ZnS and 尾 / ZnS have good magnetic and fluorescence properties, and the average particle sizes are 593.6 nm and 670.5 nm respectively. Two different magnetic fluorescent carbon spheres, C偽 / ZnS and C尾 / ZnS, were obtained by carbonization at high temperature in a tube furnace. The average particle sizes of C偽 / ZnS and C尾 / ZnS were 556.9 nm and 596.4 nm, respectively, by IR XRD and nitrogen adsorption. The adsorption ability of C _ 偽 / ZnS and C _ 尾 / ZnS for Cu~(2 and Phenol. The effects of contact time and temperature on adsorption were investigated, and the adsorption kinetics of Cu~(2 and phenol were fitted by quasi first order and quasi second order reaction equations. The results showed that the fluorescence quenching of C _ 偽 / Zn _ S and C _ 尾 / Zn _ S on magnetic carbon spheres was studied by fluorescence spectroscopy. The results showed that the concentration of C _ 偽 / Zn _ S and C _ 尾 / ZnS was between 40 and 120 mg/L, and the results showed that the fluorescence quenching of C _ 偽 / Zn _ S and C _ 尾 / ZnS was between 40 and 120 mg/L. There is a good linear relationship between the concentration of C _ 偽 / ZnS or C _ 尾 / ZnS fluorescence intensity and the concentration of Cu~(2) and Hg~(2). The detection limits of C _ 偽 / ZnS and C _ 尾 / ZnS for Cu~(2) are 2.75 mg/L and 5.53 mg / L; the detection limits of Hg~(2) are 3.92 mg / L and 4.36 mg / L, respectively.
【學位授予單位】：遼寧大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TB33;O647.3

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