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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Self-templating synthesis of nitrogen doped graphene quantum dots/3D bismuth oxyiodine hybrid hollow microspheres with improved visible-light excited photocurrent generation: Simultaneous electron transfer acceleration and bandgap narrowing
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Self-templating synthesis of nitrogen doped graphene quantum dots/3D bismuth oxyiodine hybrid hollow microspheres with improved visible-light excited photocurrent generation: Simultaneous electron transfer acceleration and bandgap narrowing

机译:氮掺杂石墨烯量子点/三维铋杂交杂交中空微球的自模塑料合成,具有改进的可见光激发光电流产生:同时电子转移加速度和带隙变窄

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AbstractThis work presents a self-templating synthetic approach for the synthesis of nitrogen doped graphene quantum dots/3D bismuth oxyiodine (NGQDs/3DBiOI) hybrid hollow microspheres (HHMs) by a facile one-pot solvothermal reaction. In this protocol, the formation of NGQDs/3DBiOI hollow microstructure and the hybridization of NGQDs with BiOI semiconductor were achieved simultaneously in one-pot reaction using the NGQDs as template and dopant, which played a double-acting role in the reaction: (i) to modulate the morphology of BiOI microspheres with special hollow structure; (ii) to hybrid with BiOI for the formation of NGQDs/3DBiOI HHMs. Further investigations revealed that the resulted NGQDs/3DBiOI HHMs exhibit tunable visible-light driven photocurrent generation with varying the amount of NGQDs used in the reaction process, which was ascribed to the simultaneous electron transfer acceleration and bandgap narrowing of the NGQDs/3DBiOI HHMs. Moreover, when evaluated as a matrix for enzyme encapsulation, the resulting NGQDs/3DBiOI HHMs exhibited enhanced load capacity than pure BiOI microspheres by virtue of their particular nanostructure. The design of such three-dimensional NGQDs/3DBiOI HHMs with preferable performance facilitates further multifarious applications for enhanced photocatalysis, enzyme immobilization and biofuels.Graphical abstractDisplay OmittedHighlights?A self-templating synthesis of NGQDs/3DBiOI HHMs was proposed.?A mechanism insight for the formation of NGQDs/3DBiOI HHMs was explored.?The improved photocurrent generation of NGQDs/3DBiOI HHMs was achieved.?The NGQDs/3DBiOI HHMs exhibited enhanced load capacity than pure BiOI.]]>
机译:<![CDATA [ 抽象 这项工作提出了一种用于合成氮掺杂石墨烯量子点/ 3D铋氧碘的自模塑料合成方法( NGQDS / 3DBIOI)杂交中空微球(HHMS)通过轻度一罐溶剂热反应。在该方案中,使用NGQDS作为模板和掺杂剂,在单罐反应中同时实现NGQDS / 3DBIOI中空微观结构和NGQDS与BIOI半导体的杂交。在反应中起一次作用作用:(i)用特殊空心结构调节生物微球的形态; (ii)与BIOI杂交的形成NGQDS / 3DBIOI HHMS。进一步的研究表明,所得的NgQDS / 3DBioiHHMS表现出可调可见光驱动的光电流,改变反应过程中使用的NgQD的量,其归因于NGQDS / 3DBioi HHMS的同时电子转移加速度和带隙变窄。此外,当评估为酶包封的基质时,通过其特定的纳米结构,所得的NgQDS / 3DBioI HHMS表现出比纯BioI微球的增强的负载能力。具有优选性能的这种三维NGQDS / 3DBIOI HHM的设计有助于增强光催化,酶固定化和生物燃料的进一步的多种应用。 < CE:抽象XMLNS:CE =“http://www.elsevier.com/xml/common/dtd”xmlns =“http://www.elsevier.com/xml/ja/dtd”class =“图形”ID = “abs0015”查看=“全部”> 图形抽象 显示省略 亮点 提出了NGQDS / 3DBIOI HHMS的自模塑料合成。 探讨了形成ngqds / 3dbioi hhms的机制洞察力。 实现了NGQDS / 3DBIOI HHM的改进的光电流生成。 NGQDS / 3DBIOI HHMS表现出比纯BIOI的增强负载能力。 ]]>

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