目录
摘 要 II
关键词 II
Abstract III
引言
引言 1
1 材料与方法 6
1．1 实验试剂及仪器 6
1．1．1 实验试剂 6
1．1．2 实验仪器 6
1．2 实验流程及步骤 7
1．2．1 实验流程 7
1．2．2 实验步骤 7
1．3 CeO2的合成 7
1．4 CeO2@MOF的合成 8
1．5 DPBF检测活性氧自由基 8
1．6 CeO2@MOF对异丙隆的降解 8
1．7 HPLC检测降解后的异丙隆 8
2 结果与分析 9
2．1 材料形貌表征 9
2．2 DPBF检测活性氧自由基情况分析 11
2．3 CeO2@MOF对农药的降解分析 11
3 讨论 12
3．1 CeO2@MOF的成功合成 12
3．2 DPBF检测活性氧自由基 13
3．3 CeO2@MOF降解异丙隆 13
4 展望 13
致谢 13
参考文献 14
多功能核壳金属有机框架纳米材料的构建
及其在农药降解中的应用
摘 要
近年来，随着纳米技术的发展，由于纳米材料尺寸效应及光学效应，纳米科学作为一项新兴热门领域蓬勃发展起来。具有核壳结构的纳米粒子@金属有机框架异质粒子（NP@MOF），综合了功能纳米粒子和金属有机框架（MOFs）等多组分的协同性质，具有以下突出优点：第一，由于金属中心、配体及功能粒子的不同，它具有组成选择多样性；第二，MOF壳孔径具有可调性；第三，核壳结构具有不同结构的多功能性。以上特性引起了研究者们的极大兴趣，并争相投入到金属有机框架核壳结构的合成设计及应用的研究中。然而目前在高效降解农药的方法方面，纳米材料的应用特别是光降解却刚刚起步。在新型纳米材料之中，通过金属离子或团簇与有机连接物的配位作用结合而成的纳米级金属有机框架材料是一颗冉冉升起的新星 *51今日免费论文网|www.51jrft.com +Q: ^351916072# 
。本论文将从新型核壳纳米结构材料的设计和合成角度出发，尝试利用多孔性的金属有机框架结构，并结合具有光降解效能的氧化铈材料，发展设计合成新型金属有机框架核壳纳米材料，并应用于降解农药异丙隆残留。结果表明，该核壳材料在30分钟光辐射下，降解异丙隆的效率高达87.5%，为纳米材料在农药降解领域的发展提供一定的参考依据。
CONSTRUCTION OF MULTIFUNCTIONAL CORESHELL ORGANOMETALLIC FRAMEWORK NANOMATERISLS AND ITS APPLICATION IN PESTICIDE DEGRADATION
ABSTRACT
In recent years, with the development of nanotechnology, nanoscience has boomed as an emerging field due to the size effect and optical effect of nanomaterials. Especially, the coreshell structure of nanoparticle at metalorganic frameworks (NP@MOF) combines the synergistic properties of functional nanoparticles and nanoscale metalorganic frameworks (MOFs), which has the following outstanding advantages: firstly, it has the diversity of composition and selection due to the different metal ion centers, organic ligands and functional particles; secondly, the pore size of the outer MOF shell is adjustable and controllable; thirdly, the NP@MOF coreshell structure possesses the integrated multifunction of different components including the core nanoparticles and outer MOF shell. These characteristics of coreshell metalorganic framework have aroused great interest of researchers to study the synthesis and design of the related NP@MOF coreshell structures and their applications. However, to date, few nanomaterials have been applied for the pesticide degradation especially the photodegradation of pesticide. Among the novel nanomaterials, the nanoscale MOF material composed of metal ions or clusters and organic linkers has become a rising star. In this work, from the perspective of the design and synthesis of new coreshell nanostructured materials, a new coreshell NP@MOF nanostructure was designed. Moreover, the nanoscale NP@MOF nanostructure was applied to the efficient photodegradation of isoproturon residue by combining the porous MOF as the shell and the photocatalyst cerium oxide as the core. By this way, the resulted NP@MOF achieved the 87.5% degradation of isoproturon after the 30min laser irradiation. Thus, this article is able to provide the further knowledge for the development of nanomaterials in the application of the efficient pesticide residue degradation.

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