磁性介孔TiO2/氧化石墨烯复合材料的制备及其对U(Ⅵ)的吸附

以氧化石墨烯（GO）、纳米Fe₃O₄、钛酸四丁酯（TBOT）为原料,合成了磁性介孔TiO₂/GO（Fe₃O₄@TiO₂/GO）复合材料,用其处理浓度为10 mg·L-1的含U（Ⅵ）废水。研究了Fe₃O₄@TiO₂/GO复合材料中GO含量、溶液初始pH值、Fe₃O₄@TiO₂/GO复合材料投加量、反应时间、U（Ⅵ）初始浓度及共存离子对U（Ⅵ）吸附的影响。结果表明:在pH值为6、GO质量分数为60wt%、Fe₃O₄@TiO₂/GO复合材料投加量为10 mg的条件下,Fe₃O₄@TiO₂/GO复合材料对U（Ⅵ）的吸附效果最佳,较同等条件下磁性介孔Fe₃O₄@TiO₂复合材料和GO的吸附量分别高了10.99 mg·g-1和1.91 mg·g-1。Fe₃O₄@TiO₂/GO复合材料对U（Ⅵ）的吸附180 min即达到平衡,准二级动力学模型和Freundlich吸附等温模型能很好地描述其吸附过程。解吸实验表明,经5次吸附-解吸后,U（Ⅵ）的吸附率仍高达90.86%,说明Fe₃O₄@TiO₂/GO复合材料具有较高的循环利用性能。      

Fe3O4-氮掺杂生物炭材料催化芬顿反应吸附有机污水中磷酸根离子的研究

以竹粉废料为原料,利用尿素热解制得氮掺杂生物炭(NBC),再通过原位沉积法在生物炭表面生长纳米Fe₃O₄,得到Fe₃O₄-氮掺杂生物炭复合材料(NBC-Fe₃O₄)。以KH₂PO₄溶液模拟含磷废水测试了NBC-Fe₃O₄复合材料的吸附性能,结果表明复合材料在pH值7时达到最佳吸附效果,吸附效率接近100%,最大吸附量为20.3 mg/g;复合材料对磷的吸附符合朗格缪尔模型和二级动力学方程。另外,复合材料中含有大量的Fe(Ⅱ)和Fe(Ⅲ),可以通过外加H₂O₂溶液形成芬顿氧化体系,实现同步催化降解腐殖酸和吸附磷酸根污染物。     

Fe3O4/高岭土磁性复合材料对Cu2+的吸附性能

为实现高岭土（Kaolin）在Cu²⁺废水处理中的实际应用,采用球磨方法制备了剥离Kaolin,并通过氧化沉淀法制备了Fe₃O₄/Kaolin磁性复合材料。通过激光粒度分析仪、SEM、XRD对Fe₃O₄/Kaolin磁性复合材料的形貌及组成进行表征,并通过测试Fe₃O₄/Kaolin磁性复合材料对Cu²⁺的饱和吸附量和磁分离回收率,确定了当Kaolin球磨4.0 h、掺量为3.0 g时所制备的Fe₃O₄/Kaolin磁性复合材料对Cu²⁺的吸附性能最佳,平衡吸附量为17.98 mg/g。磁滞回线结果表明,Fe₃O₄/Kaolin磁性复合材料具有较好的磁响应性,饱和磁化强度约为16.19 emu/g。此外,采用Langmuir和Freundlich吸附等温式对Fe₃O₄/Kaolin磁性复合材料的吸附数据进行拟合,结果表明,Fe₃O₄/Kaolin磁性复合材料对Cu²⁺的吸附行为基本符合Langmuir吸附等温模型和Freundlich吸附等温模型,既存在单分子层吸附,也存在多分子层吸附。     

可磁分离Fe3O4/g-C3N4复合材料的制备及其性能

为了利用Fe₃O₄的磁响应性及石墨相C₃N₄（g-C₃N₄）优良的光催化活性,首先采用高温热聚合法,以尿素为前驱体制备g-C₃N₄,然后采用水热法合成了可磁分离Fe₃O₄/g-C₃N₄复合材料。利用TEM、XRD、TGA、BET和振动样品磁强计（VSM）等多种测试手段表征分析Fe₃O₄/g-C₃N₄复合材料的形貌、晶型结构、比表面积、成分、饱和磁化强度等。通过模拟太阳光下Fe₃O₄/g-C₃N₄复合材料光催化吸附降解亚甲基蓝（MB）的实验,评价了Fe₃O₄/g-C₃N₄复合材料的吸附性能及光催化性能。结果表明,可磁分离Fe₃O₄/g-C₃N₄复合材料具有较大的比表面积,约为71.89 m²/g;且具有较好的磁性,饱和磁化强度为18.79 emu/g,可实现复合材料的分离回收;光照240 min时,Fe₃O₄/g-C₃N₄复合材料对MB的去除率为56.54%。所制备的Fe₃O₄/g-C₃N₄复合材料具有优良的吸附性能、光催化活性和磁性,并可通过外加磁场进行分离与回收。     

纤维状磁性二氧化钛复合材料的制备及其对La3+的吸附行为

为富集回收低浓度矿山尾水中稀土资源,采用溶胶-凝胶法和水热法制备了纤维状外壳的磁性二氧化钛复合材料Fe₃O₄@fTiO₂,利用SEM、TEM、XPS、FTIR和XRD对材料进行表征,考察了Fe₃O₄@fTiO₂对稀土La³⁺的吸附行为。结果表明：Fe₃O₄@fTiO₂是外壳为纤维状的核壳结构磁性复合材料;吸附剂具有良好的超顺磁性,饱和磁化强度高达30.81 emu·g^-1;在15℃、pH=5的酸性条件下,Fe₃O₄@fTiO₂对稀土La³⁺在15 min内达到吸附平衡,且符合伪一级动力学模型;Langmuir等温吸附模型能较好地描述吸附La³⁺过程,理论吸附容量为142.88 mg·g^-1;Fe₃...     

磁功能化石墨烯改性环氧树脂及其复合材料的性能

先以氧化石墨烯和三氯化铁为原料并用高温水热法制备还原氧化石墨烯/ Fe₃O₄(rGO/Fe₃O₄)复合物,再用其改性环氧树脂制备出rGO/Fe₃O₄/环氧树脂复合材料,研究了(rGO/Fe₃O₄)复合物的添加对其性能的影响。结果表明,(rGO/Fe₃O₄)复合物的添加量为30%的复合材料其冲击强度达到27 kJ/m²,比纯环氧树脂的冲击强度提高了58.8%。在环氧树脂中添加rGO/Fe₃O₄复合物,使其吸波性能显著提高。rGO/Fe₃O₄复合物的添加量为20%的复合材料,其反射率在小于-10 dB的频率范围为7.7~12.3 GHz,有效吸收频宽达4.6 GHz,覆盖了整个X波段。随着石墨烯含量的提高rGO/Fe₃O₄/环氧树脂复合材料达到最小反射率的位置向低频位置移动,控制rGO和Fe₃O₄的相对含量可调控这种复合材料的吸波性能。     

纳米微球NH2—Fe3O4@聚乙二醇@ZnO的制备及其光催化性能

首先合成氨基功能化Fe₃O₄(NH₂—Fe₃O₄),并以NH₂—Fe₃O₄为磁核,六水合硝酸锌(Zn(NO₃)₂·6H₂O)为锌源,在表面活性剂聚乙二醇(PEG,PEG-400)辅助下通过水热法制备PEG修饰的ZnO(NH₂—Fe₃O₄@PEG@ZnO)磁性复合材料。利用XRD、SEM、TEM、XPS、紫外-可见-近红外分光光度计、比表面吸附仪(BET)、振动样品磁强计(VSM)等对NH₂—Fe₃O₄@PEG@ZnO复合材料组成、形貌、磁性能等进行表征。并进一步以罗丹明B(RhB)染料为模拟污染物,对NH₂?Fe₃O₄@PEG@ZnO复合材料的光催化降解性能进行研究,采用单因素法探究Fe与Zn的原子比(n(Fe)∶n(Zn))、合成温度、表面活性剂种类及用量对NH₂—Fe₃O₄@PEG@ZnO复合材料光催化降解性能的影响。结果表明,n(Fe)∶n(Zn)=1∶15、水热合成温度为180℃制备的NH₂—Fe₃O₄@ZnO复合材料具有良好的光降解性能,0.0500 g NH₂—Fe₃O₄@ZnO复合材料在紫外光照射20 min内对50 mL RhB(1.0×10?5 mol·L?1)溶液降解率为90.36%。而相同条件制备的NH₂—Fe₃O₄@PEG@ZnO复合材料呈微球状,比表面积为11.43 m2·g?1,禁带宽度为2.51 eV,对RhB的光催化降解率可提高至99.36%,循环使用10次后,其对RhB的光催化降解率仍可达96.48%,PEG-400对NH₂—Fe₃O₄@ZnO复合材料的光催化活性具有较大的协同效应。      

Fe3O4复合材料对Cd2+的吸附性能研究

在碱性条件下,以共沉淀法合成Fe₃O₄,再以正硅酸乙酯和二乙烯三胺为原料,制备出Fe₃O₄复合材料(Fe₃O₄-SiO₂-NH₂)。采用FT-IR、VSM和SEM对其结构进行表征,并研究了复合材料对Cd2+的吸附性能。实验结果表明,在T=55℃、t=60 min、Cd2+溶液的初始浓度为100 mg·L-1、Fe₃O₄-SiO₂-NH₂的添加量为0.1 g时,该材料对Cd2+的吸附容量为71.4 mg·g-1。其吸附动力学行为更符合准二级动力学,热力学更适合用Langmuir等温吸附模型描述。Fe₃O₄-SiO₂-NH₂吸附Cd2+后洗脱再生,经过5次循环使用后,其对Cd2+的去除率仍然大于70%。      

Fe3O4@离子印迹聚(St-HPMA-DVB)复合材料的合成及其对水中高氯酸盐选择性吸附

采用超声协助悬浮聚合法以高氯酸根（ClO₄-）为模板制备了Fe₃O₄@离子印迹聚（苯乙烯-3-（2-氨基三乙基四胺）-2-甲基丙烯酸羟丙酯-二乙烯苯）（Fe₃O₄@ⅡP（St-HPMA-DVB））磁性复合材料,通过TEM、振动样品磁强计（VSM）、TGA、XRD、元素分析（EA）、FTIR等对其进行表征,考察了交联剂DVB用量对材料结构与性能的影响。结果表明:合成的Fe₃O₄@ⅡP（St-HPMA-DVB）磁性复合材料平均粒径为500~2 000 nm,随DVB用量的增加而增大;磁化强度为9.77~12.78 emu/g,随DVB用量的增加而减小;DVB的加入有利于Fe₃O₄@ⅡP（St-HPMA-DVB）磁性复合材料的离子印迹空腔的形成和稳定。考察了不同溶液pH值、ClO₄-的初始浓度、吸附时间等条件下Fe₃O₄@ⅡP（St-HPMA-DVB）吸附水中ClO₄-的性能,发现溶液pH值能显著影响Fe₃O₄@ⅡP（St-HPMA-DVB）磁性复合材料对ClO₄-的吸附效果,pH为3.0时效果最佳;不同DVB用量Fe₃O₄@ⅡP（St-HPMA-DVB）磁性复合材料对ClO₄-的吸附量和选择性有影响,当DVB用量为0.5 g时,Fe₃O₄@ⅡP（St-HPMA-DVB）磁性复合材料的吸附量和选择性最佳;吸附机制以离子交换和静电引力为主。等温吸附线符合Langmuir模型,Fe₃O₄@ⅡP（St-HPMA-DVB）磁性复合材料的饱和吸附量（q_m,c=76.9~111.1 mg/g）高于非离子印迹材料Fe₃O₄@非离子印迹聚（NIP）（St-HPMA-DVB）磁性复合材料（q_m,c=62.5 mg/g）。吸附过程可在10 min内达到平衡,符合准二级动力学模型;Fe₃O₄@ⅡP（St-HPMA-DVB）磁性复合材料能高选择性地有效吸附水中ClO₄-,对ClO₄-的印迹因子α为1.8,对几种常见共存离子的选择性因子β>5.8,是潜在的高选择性吸附和回收ClO₄-的功能材料。      

含锰废水为原料制备MnO2/Fe3O4及对Cu2+的吸附研究

开发高效、无毒、低成本的吸附剂对处理重金属离子具有重要意义。该文以含锰废水为原料,通过电絮凝处理技术及热处理,制备了一种MnO₂/Fe₃O₄复合材料。所制得的MnO₂/Fe₃O₄-10对铜离子具有优异的吸附效果,理论最大吸附量为72.5 mg/g,其热力学吸附过程符合Freundlich模型,动力学吸附过程符合准二级动力学模型。表征分析认为,MnO₂/Fe₃O₄-10的优异性能归功于分散的球形纳米颗粒形貌,因为其可提供较大的比表面积和吸附活性位点。     

Fast removal of copper ions by gum arabic modified magnetic nano-adsorbent

A novel magnetic nano-adsorbent was developed by treating Fe(3)O(4) nanoparticles with gum arabic to remove copper ions from aqueous solutions. Gum arabic was attached to Fe(3)O(4) via the interaction between the carboxylic groups of gum arabic and the surface hydroxyl groups of Fe(3)O(4). The surface modification did not result in the phase change of Fe(3)O(4), while led to the formation of secondary particles with diameter in the range of 13-67nm and the shift of isoelectric point from 6.78 to 3.6. The amount of gum arabic in the final product was about 5.1wt%. Both the naked magnetic nanoparticles (MNP) and gum arabic modified magnetic nanoparticles (GA-MNP) could be used for the adsorption of copper ions via the complexation with the surface hydroxyl groups of Fe(3)O(4) and the complexation with the amine groups of gum arabic, respectively. The adsorption rate was so fast that the equilibrium was achieved within 2min due to the absence of internal diffusion resistance and the adsorption capacities for both MNP and GA-MNP increased with increasing the solution pH. However, the latter was significantly higher than the former. Also, both the adsorption data obeyed the Langmuir isotherm equation. The maximum adsorption capacities were 17.6 and 38.5mg/g for MNP and GA-MNP, respectively, and the Langmuir adsorption constants were 0.013 and 0.012L/mg for MNP and GA-MNP, respectively. Furthermore, both the adsorption processes were endothermic due to the dehydration of hydrated metal ions. The enthalpy changes were 11.5 and 9.1kJ/mol for MNP and GA-MNP, respectively. In addition, the copper ions could desorb from GA-MNP by using acid solution and the GA-MNP exhibited good reusability.     

Characteristic of a novel composite inorganic polymer coagulant-PFAC prepared by hydrochloric pickle liquor

A novel magnetic nano-adsorbent has been developed by the covalent binding of polyacrylic acid (PAA) on the surface of Fe(3)O(4) nanoparticles and the followed amino-functionalization using diethylenetriamine (DETA) via carbodiimide activation. Transmission electron microscopy image showed that the amino-functionalized Fe(3)O(4) nanoparticles were quite fine with a mean diameter of 11.2+/-2.8 nm. X-ray diffraction analysis indicated that the binding process did not result in the phase change of Fe(3)O(4). Magnetic measurement revealed they were nearly superparamagnetic with a saturation magnetization of 63.2 emu/g Fe(3)O(4). The binding of DETA on the PAA-coated Fe(3)O(4) nanoparticles was demonstrated by the analyses of Fourier transform infrared (FTIR) spectroscopy and zeta potential. After amino-functionalization, the isoelectric point of PAA-coated Fe(3)O(4) nanoparticles shifted from 2.64 to 4.59. The amino-functionalized magnetic nano-adsorbent shows a quite good capability for the rapid and efficient adsorption of metal cations and anions from aqueous solutions via the chelation or ion exchange mechanisms. The studies on the adsorption of Cu(II) and Cr(VI) ions revealed that both obeyed the Langmuir isotherm equation. The maximum adsorption capacities and Langmuir adsorption constants were 12.43 mg/g and 0.06 L/mg for Cu(II) ions and 11.24 mg/g and 0.0165 L/mg for Cr(VI) ions, respectively.     

氨基功能化纳米Fe_3O_4复合材料的一步法合成及其对五氯酚的吸附与降解性能

采用溶剂热一步法制备氨基功能化纳米Fe_3O_4磁性复合材料(NH_2-nFe_3O_4)。通过EA、XRD、FTIR、TEM、VSM等手段对NH_2-nFe_3O_4进行组成、结构、形貌、磁性等表征,并研究其吸附和降解水中五氯酚(PCP)污染物的性能。结果表明:NH_2-nFe_3O_4平均粒径约为20nm,饱和磁化强度为56.8emu/g;对PCP的等温吸附线符合Freundlich模型,当PCP的初始浓度为1 000mg/L时,吸附容量(q)可达899.2mg/g。吸附动力学研究表明,吸附过程可在5min内达到平衡,符合准二级动力学模型;将吸附PCP后的NH2-nFe_3O_4加入Fe~(3+)-H_2O_2体系,采用类Fenton反应可以实现PCP在可见光下原位降解。在pH值为3.0~8.0、5 min内对固载量为6.25~120.0mg/g的PCP实现近100%降解,较普通Fenton反应体系有更宽的pH适用范围。且NH_2-nFe_3O_4可循环使用,是具有优异潜力的水中PCP绿色吸附与降解材料。     

赖氨酸修饰磁性Fe3O4纳米粒子的制备及其对Cu（Ⅱ）的吸附性能

采用化学共沉淀法制备磁性Fe3O4纳米粒子,通过在磁性Fe3O4纳米粒子表面接枝赖氨酸,制备一种新型磁性纳米吸附剂。通过TEM、FT-IR、XRD、VSM对其进行表征,着重研究了其对Cu(Ⅱ)离子的吸附性能。结果表明,溶液pH值能显著影响吸附剂对Cu(Ⅱ)的吸附效果,pH为5时其效果最佳。等温吸附数据符合Langmuir模型,T=298K、pH=5、V=5mL时,吸附剂的饱和吸附容量qm=22.42mg/g,吸附常数为0.0346L/mg。     

Functional microspheres of graphene quantum dots

Graphene-quantum-dot microspheres (GQDSs) have been prepared by assembly of graphene quantum dots (GQDs) via a water-in-oil (W/O) emulsion technique without the addition of any surfactants. Although made of quantum-sized graphene dots, the as-formed GQDSs are solid and remain intact after slight ultrasonication. The versatile W/O emulsion method allows the in?situ intercalation of functional nanocomponents into the GQDSs for specific applications. As exemplified by the Fe(3)O(4)-containing GQDSs, Fe(3)O(4)-GQDSs exhibit a large magnetic response. Furthermore, the embedded Fe(3)O(4) nanoparticles in GQDSs can act as the catalysts for the growth of carbon nanotubes (CNTs), which opens the opportunities for fabricating new complex structures of CNTs surrounding GQDSs by simple chemical vapor deposition.     

Magnetic nanoparticle (Fe3O4) impregnated onto tea waste for the removal of nickel(II) from aqueous solution

The removal of Ni(II) from aqueous solution by magnetic nanoparticles prepared and impregnated onto tea waste (Fe(3)O(4)-TW) from agriculture biomass was investigated. Magnetic nanoparticles (Fe(3)O(4)) were prepared by chemical precipitation of a Fe(2+) and Fe(3+) salts from aqueous solution by ammonia solution. These magnetic nanoparticles of the adsorbent Fe(3)O(4) were characterized by surface area (BET), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Fourier Transform-Infrared Spectroscopy (FT-IR). The effects of various parameters, such as contact time, pH, concentration, adsorbent dosage and temperature were studied. The kinetics followed is first order in nature, and the value of rate constant was found to be 1.90×10(-2) min(-1) at 100 mg L(-1) and 303 K. Removal efficiency decreases from 99 to 87% by increasing the concentration of Ni(II) in solution from 50 to 100 mg L(-1). It was found that the adsorption of Ni(II) increases by increasing temperature from 303 to 323 K and the process is endothermic in nature. The adsorption isotherm data were fitted to Langmuir and Freundlich equation, and the Langmuir adsorption capacity, Q°, was found to be (38.3)mgg(-1). The results also revealed that nanoparticle impregnated onto tea waste from agriculture biomass, can be an attractive option for metal removal from industrial effluent.     

Investigation on mechanism of growth arrest induced by iron oxide nanoparticles in PC12 cells

Iron oxide nanoparticles (Fe3O4 NPs) have recently received increasing interest in the biotechnology and life science. However, little is known about the nanoneurotoxicity of Fe3O4 NPs following exposure to neurons. This study was to elucidate the cytotoxicity and DNA damage of Fe3O4 NPs on PC12 cells line which derived from Rattus norvegicus pheochromocytoma. The cell viability was observed by MTS assay and cell cycle status was analyzed using flow cytometry. DNA damage related gene (P53) and its downstream targets (P21 and GADD45) were determined by semiquantitative RT-PCR. The results showed that exposure to Fe3O4 NPs at dosage levels between 25 and 200 microg/ml decreased cell viability respectively. The nanoparticles treatment caused cell cycle arrest in G2/M phase and the mRNA levels of P53 increased when PC12 cells were incubated with different concentrations Fe3O4 NPs. However, P21 and GADD45, the downstream targets of P53, were not affected. In summary, exposure to Fe3O4 NPs resulted in a dose-dependent cytotoxicity in cultured PC12 cells that was associated with increased P53 gene expression and much attention should be paid to the potential impact of Fe3O4 NPs on the central nervous system.     

Removal of methylene blue from aqueous solution by a solvothermal-synthesized graphene/magnetite composite

In this study, we have demonstrated a facile one-step solvothermal method for the synthesis of the graphene nanosheet (GNS)/magnetite (Fe(3)O(4)) composite. During the solvothermal treatment, in situ conversion of FeCl(3) to Fe(3)O(4) and simultaneous reduction of graphene oxide (GO) into graphene in ethylene glycol solution were achieved. Electron microscopy study suggests the Fe(3)O(4) spheres with a size of about 200 nm are uniformly distributed and firmly anchored on the wrinkled graphene layers with a high density. The resulting GNS/Fe(3)O(4) composite shows extraordinary adsorption capacity and fast adsorption rates for removal of organic dye, methylene blue (MB), in water. The adsorption kinetics, isotherms and thermodynamics were investigated in detail to reveal that the kinetics and equilibrium adsorptions are well-described by pseudo-second-order kinetic and Langmuir isotherm model, respectively. The thermodynamic parameters reveal that the adsorption process is spontaneous and endothermic in nature. This study shows that the as-prepared GNS/Fe(3)O(4) composite could be utilized as an efficient, magnetically separable adsorbent for the environmental cleanup.     

柠檬酸在磁性纳米粒子上的吸附及性能表征

采用柠檬酸对Fe3O4磁性纳米粒子进行表面改性,制备了高稳定性的水基磁流体.利用衰减全反射红外光谱(ATR-FTIR)、热重分析(TG)、透射电镜(TEM)、X射线衍射(XRD)和振动样品磁强计(VSM)对改性前后的磁性粒子进行了表征.结果表明,柠檬酸在Fe3O4表面的吸附是氢键、静电力和共价键共同作用的结果,pH为4.8时化学吸附达到最大,符合Langmuir等温吸附,建立了等温吸附方程,饱和吸附量为100mg/g.     

磁性Fe_3O_4@离子印迹聚(MMA-HPMA-DVB)复合材料的合成及其对水中Ni(Ⅱ)选择性吸附

采用超声协助悬浮聚合法以Ni(Ⅱ)离子为模板制备了氨基功能化纳米Fe_3O_4-离子印迹聚(甲基丙烯酸甲酯(MMA)-3-(2-氨基乙基胺)-2-甲基丙烯酸羟丙酯(HPMA)-二乙烯基苯(DVB))磁性复合材料(Fe_3O_4@ion imprinted poly(MMA-HPMA-DVB),Fe_3O_4@IIP(MMA-HPMA-DVB))。通过EA、XRD、FTIR、TEM、VSM等手段对Fe_3O_4@IIP(MMA-HPMA-DVB)的组成、结构、形貌、磁性等进行了表征,并研究了其吸附水中Ni(Ⅱ)的性能。结果表明:合成的Fe_3O_4@IIP(MMA-HPMA-DVB)平均粒径为100nm,饱和磁化强度为43.8emu/g;共聚单体甲基丙烯酸甲酯(MMA)的羰基通过氢键与Fe_3O_4表面羟基结合,有利于Fe_3O_4@IIP(MMA-HPMA-DVB)的核-壳结构的形成与稳定;Fe_3O_4@IIP(MMA-HPMA-DVB)对Ni(Ⅱ)的吸附受溶液pH值影响较小;等温吸附线符合Langmuir模型,饱和吸附量(q_(m,c)=500 mg/g,q_(m,e)=478 mg/g)高于非离子印迹材料(Fe_3O_4@none-ion imprinted poly(MMA-HPMA-DVB),Fe_3O_4@NIP(MMA-HPMA-DVB)),q_(m,c)=90.9mg/g,q_(m,e)=83.8mg/g)。吸附过程可在5min内达到平衡,符合准二级动力学模型。Fe_3O_4@IIP(MMA-HPMA-DVB)能高选择性地有效吸附水中Ni(Ⅱ),对Ni(Ⅱ)的印迹因子(α)为1.9,对几种常见共存离子的选择性因子(β)7.7,是潜在的高选择性吸附和回收Ni(Ⅱ)的功能材料。