ZnO纳米颗粒水凝胶高分子材料的合成及梭曼体内外染毒洗消性能的评价

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目的 评价氧化锌纳米颗粒(ZnO NP)水凝胶(ZnO NP-gel)高分子材料对梭曼染毒的洗消的效果.方法 化学沉淀法制备ZnO NP后,制备ZnO NP-戊烯酸,最后制备ZnO NP-gel.扫描电子显微镜(SEM)下观察形貌表征,透射电子显微镜(TEM)观察内部结构表征,粒度分布仪测定zeta电位,红外光谱(IR)分析其化学键结构,采用X射线衍射(XRD)分析其衍射图谱.通过梭曼的联苯胺显色反应测定体外梭曼的残余量.10 mL梭曼52.2 mg·L-1分别与ZnO NP 1 g·L-1和ZnO NP-gel 1 g·L-1混匀(V:V=3:1)静置30 min,过滤,小鼠sc给予滤出液40 μL·g-1,观察小鼠的中毒症状及死亡情况.结果 SEM和TEM下见ZnO NP-gel均为块状结构;ZnO NP-gel zeta电位为(-7.89±0.04)mV;IR分析显示,ZnO NP-gel的波数在754和618 cm-1处出现较强吸收峰;XRD图谱显示,合成的ZnO NP-gel在2θ=8.06738°可见明显尖峰.在相同浓度的ZnO NP-gel和ZnO NP,ZnO NP-gel体外洗消效率均显著高于ZnO NP组(n=3,P<0.05);洗消50%梭曼的时间缩短了4倍.皮下注射梭曼经ZnO NP-gel洗消后的过滤液的小鼠均未出现惊厥和死亡.结论 ZnO NP-gel对梭曼具有快速的吸附和催化双重功能的复合洗消效果,高分子修饰后能提高ZnO NP的洗消能力.“,”OBJECTIVE To evaluate the decontamination capability of hydrogel polymer coated ZnO nanoparticles (ZnO NP-gel) against soman. METHODS ZnO NP was synthetized using chemical precipitation method and modified with 4-pentenoic acid,and then polymerized with comonomers to obtain ZnO NP-gel. The transmission electron microscope (TEM), scanning electron microscope (SEM) and particle size instrument were used to observe the internal structure,micromorphology,particle size and zeta potential of these materials. An infrared spectroscope (IR) was used to analyze their chemical bond structure,while X-ray diffraction (XRD) was used to analyze the diffraction pattern.The content of soman was determined by benzidine chromogenic reaction. ZnO NP(1 g·L-1), ZnO NP-gel (1 g·L-1) and distilled water were mixed with soman(52.2 mg·L-1),stood for 30 min,and then filtered before filtrate was subcutaneously injected into mice (40 μL·g-1) to observe the symptoms of poisoning and death. RESULTS SEM and TEM showed that ZnO NP-gel had a block structure, the zeta potential of which was (-7.89 ± 0.04) mV. The results of IR indlicated that ZnO NP-gel had stronger absorption peaks at 754 and 618 cm-1, and XRD revealed that these materials had a sharp peak at 2θ=8.06738°. The decontamination efficiency of ZnO NP-gel was higher than that of ZnO NP group at the same concen?tration (n=3, P<0.05), and the time for decontamination of 50% soman was shortened by four times. The mice were injected subcutaneously with the soman solution treated with ZnO NP-gel, which caused no convulsion or death. CONCLUSION ZnO NP-gel can perform the double function of fast adsorption and catalysis of soman,and the decontamination ability of which could be improved through polymer modification.
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