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Inorganic Hollow Nanocoils Fabricated by Controlled Interfacial Reaction and Their Electrocatalytic Properties
Small ( IF 13.0 ) Pub Date : 2021-09-24 , DOI: 10.1002/smll.202103575 Jun Hwan Moon 1 , Moo Young Lee 2 , Bum Chul Park 3 , Yoo Sang Jeon 4 , Seunghyun Kim 1 , Taesoon Kim 1 , Min Jun Ko 1 , Kang Hee Cho 2 , Ki Tae Nam 2 , Young Keun Kim 1, 3, 4
Small ( IF 13.0 ) Pub Date : 2021-09-24 , DOI: 10.1002/smll.202103575 Jun Hwan Moon 1 , Moo Young Lee 2 , Bum Chul Park 3 , Yoo Sang Jeon 4 , Seunghyun Kim 1 , Taesoon Kim 1 , Min Jun Ko 1 , Kang Hee Cho 2 , Ki Tae Nam 2 , Young Keun Kim 1, 3, 4
Affiliation
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The fabrication of 3D hollow nanostructures not only allows the tactical provision of specific physicochemical properties but also broadens the application scope of such materials in various fields. The synthesis of 3D hollow nanocoils (HNCs), however, is limited by the lack of an appropriate template or synthesis method, thereby restricting the wide-scale application of HNCs. Herein, a strategy for preparing HNCs by harnessing a single sacrificial template to modulate the interfacial reaction at a solid–liquid interface that allows the shape-regulated transition is studied. Furthermore, the triggering of the Kirkendall effect in 3D HNCs is demonstrated. Depending on the final state of the transition metal ions reduced during the electrochemical preparation of HNCs, the surface states of the binding anions and the composition of the HNCs can be tuned. In a single-component CrPO4 HNC with a clean surface, the Kirkendall effect of the coil shape is analyzed at various points throughout the reaction. The rough-surface multicomponent MnOxP0.21 HNCs are complexed with ligand-modified BF4-Mn3O4 nanoparticles. The fabricated nanocomposite exhibits an overpotential decrease of 25 mV at neutral pH compared to pure BF4-Mn3O4 nanoparticles because of the increased active surface area.
中文翻译：
可控界面反应制备的无机空心纳米线圈及其电催化性能
3D 中空纳米结构的制造不仅可以提供特定的物理化学特性，而且还拓宽了此类材料在各个领域的应用范围。然而，3D空心纳米线圈（HNCs）的合成受到缺乏合适的模板或合成方法的限制，从而限制了HNCs的广泛应用。在此，研究了通过利用单个牺牲模板来调节允许形状调节转变的固液界面处的界面反应来制备 HNC 的策略。此外，还演示了 3D HNC 中柯肯德尔效应的触发。根据在 HNC 电化学制备过程中还原的过渡金属离子的最终状态，可以调整结合阴离子的表面状态和 HNC 的组成。在单组分 CrPO4 HNC 表面干净，在整个反应过程中的各个点分析线圈形状的柯肯德尔效应。粗糙表面的多组分 MnO x P 0.21 HNC 与配体改性的 BF 4 -Mn 3 O 4纳米颗粒复合。由于增加的活性表面积，与纯BF 4 -Mn 3 O 4纳米颗粒相比，所制造的纳米复合材料在中性pH下表现出25mV的过电位降低。
更新日期：2021-11-04
中文翻译：
可控界面反应制备的无机空心纳米线圈及其电催化性能
3D 中空纳米结构的制造不仅可以提供特定的物理化学特性，而且还拓宽了此类材料在各个领域的应用范围。然而，3D空心纳米线圈（HNCs）的合成受到缺乏合适的模板或合成方法的限制，从而限制了HNCs的广泛应用。在此，研究了通过利用单个牺牲模板来调节允许形状调节转变的固液界面处的界面反应来制备 HNC 的策略。此外，还演示了 3D HNC 中柯肯德尔效应的触发。根据在 HNC 电化学制备过程中还原的过渡金属离子的最终状态，可以调整结合阴离子的表面状态和 HNC 的组成。在单组分 CrPO4 HNC 表面干净，在整个反应过程中的各个点分析线圈形状的柯肯德尔效应。粗糙表面的多组分 MnO x P 0.21 HNC 与配体改性的 BF 4 -Mn 3 O 4纳米颗粒复合。由于增加的活性表面积，与纯BF 4 -Mn 3 O 4纳米颗粒相比，所制造的纳米复合材料在中性pH下表现出25mV的过电位降低。
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