规则 UiO-66(Ce)纳米立方体的制备及其电化学催化性能

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering B-advanced Functional Solid-state Materials Pub Date : 2024-11-05 DOI:10.1016/j.mseb.2024.117800

Jingwei Yuan , Wanyin Xu , Yirong Wang , Shao Wang , Ronghui Hao , Yubing Dong , Qianqian Li , Yufeng Zhao

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引用次数: 0

摘要

金属有机框架（MOFs）具有高度有序的多孔结构和相对较高的比表面积，在电化学催化领域具有巨大的应用潜力。在这项研究中，我们成功制备了具有均匀纳米立方体形态的 UiO-66(Ce)颗粒，其尺寸分布范围为 90 至 156 nm。通过直接调节详细的合成参数，包括溶剂浓度和反应时间，可以精确地调整形貌和尺寸。此外，还通过微观结构表征全面研究了 UiO-66(Ce)的晶体生长机理。这种均匀的颗粒具有理想的电催化性能，在碱性电解质（1 M KOH）中的氢进化反应（HER）过电位为 118.6 mV（10 mA cm-2）。这项研究不仅为 UiO-66(Ce)的形态操作引入了一种新方法，还为高性能电化学能量转换系统的发展提供了新的候选材料。

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Fabrication of regular UiO-66(Ce) nanocubes and their electrochemical catalysis performance

Metal-organic frameworks (MOFs), characterized with highly ordered porous structures and relatively high surface area, exhibit significant application potential in the field of electrochemistry catalysis. In this study, we successfully prepared UiO-66(Ce) particles with uniform nanocube morphology and the size distribution ranging from 90 to 156 nm. Both morphology and size can be precisely tuned by directly adjusting detailed synthesis parameters, including solvent concentration and reaction time. Moreover, the crystal growth mechanism of UiO-66(Ce) was comprehensively investigated through the microstructure characterization. Such uniform particles demonstrated a desirable electrocatalytic performance with hydrogen evolution reaction (HER) overpotential of 118.6 mV (at 10 mA cm⁻²) in alkaline electrolyte (1 M KOH). This study not only introduces a novel approach for the morphological manipulation of UiO-66(Ce), but also presents new material candidates for the advancement of high-performance electrochemical energy conversion systems.

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来源期刊

Materials Science and Engineering B-advanced Functional Solid-state Materials 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.