Investigations of water-induced polar facet stabilization mechanism in ZnO nanoplates with 1H NMR spectroscopy

IF 2.9 3区化学 Q3 CHEMISTRY, PHYSICAL

Physical Chemistry Chemical Physics Pub Date : 2025-06-10 DOI:10.1039/d5cp01005e

benteng Song, Qin Zhu, Ling-Hai Xie

引用次数: 0

Abstract

ZnO with polar facets has been extensively studied in material sciences due to its wide applications. However, the stabilization mechanisms for polar surfaces in ZnO nanomaterials are still unclear. Here, we show that water can dissociate at Zn and O vacancy on polar (0001)-Zn and (0001 @#x0305;)-O surface of ZnO nanoplates, respectively, producing H in Zn vacancy and surface OH groups. Upon exposure to saturated water vapor, in addition to the peak arising from H in Zn vacancy, the amount of surface OH species increases owing to water dissociation on both polar Zn- and O-terminated surfaces, resulting in significant electrostatic repulsion between these polar surfaces. This improves the dispersity of ZnO nanoplates and thus the stability of polar surfaces. These results are helpful for further understanding the polar facet-related stabilization mechanisms in oxide nanomaterials.

查看原文本刊更多论文

水致ZnO纳米板极性面稳定机理的1H NMR研究

具有极性晶面的氧化锌由于其广泛的应用，在材料科学中得到了广泛的研究。然而，ZnO纳米材料中极性表面的稳定机制尚不清楚。在这里，我们发现水可以分别在ZnO纳米板的极性(0001)-Zn和(0001 @#x0305;)-O表面的Zn和O空位处解离，在Zn空位和表面OH基团上产生H。当暴露于饱和水蒸气时，除了Zn空位中H产生的峰值外，由于水在Zn端和o端极性表面上的解离，表面OH的数量增加，导致这些极性表面之间存在显着的静电排斥。这提高了ZnO纳米片的分散性，从而提高了极性表面的稳定性。这些结果有助于进一步了解氧化物纳米材料中与极性面相关的稳定机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Physical Chemistry Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

5.50

自引率

9.10%

发文量

2675

审稿时长

2.0 months

期刊介绍： Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.