在二维电导金属有机框架中介于质的缺陷
Tekalign T Debela1, Min Chieh Yang1, Christopher H Hendon1
1Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States.
Journal of the American Chemical Society
|May 4, 2023
概括
预计高表面积金属有机框架 (MOF) 是金属的,但这项研究显示,间歇性缺陷可能使它们成为半导体,影响它们在催化和储能中的使用.
科学领域:
- 材料科学
- 电化学
- 固态物理
背景情况:
- 高表面积的材料,特别是金属有机框架 (MOF),在电催化和储能方面具有优势.
- 导电性MOF,如Ni3 ((HITP) 2) 和Ni3 ((HIB) 2) 是有希望的,但它们的散装金属性需要实验验证.
研究的目的:
- 研究导电MOF中的缺陷的热力学.
- 确定这些缺陷对Ni3 (HITP) 2和Ni3 (HIB) 2散装电子特性的影响.
主要方法:
- 对空位和间隙的热力学分析.
- 计算模型预测缺陷的普遍性和电子结构.
主要成果:
- 介质被确定为导电MOF的可信和普遍缺陷.
- 预计间歇的存在将使Ni3 (HITP) 2和Ni3 (HIB) 2成为散装半导体,而不是金属.
结论:
- 性缺陷显著影响导电MOF的体积特性.
- 这些发现挑战了某些导电MOF的金属性质,表明由于缺陷而导致的半导体行为.
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