插层(化学)
材料科学
二硫化钼
单层
光致发光
Atom(片上系统)
离子
化学物理
电化学
钼
铈
异质结
纳米技术
结晶学
光电子学
无机化学
化学
电极
复合材料
物理化学
嵌入式系统
有机化学
冶金
计算机科学
作者
Yiran Ding,Mengqi Zeng,Qijing Zheng,Jiaqian Zhang,Donghai Xu,Wei-Yin Chen,Chenyang Wang,Shulin Chen,Yingying Xie,Yu Ding,Shuting Zheng,Jin Zhao,Peng Gao,Lei Fu
标识
DOI:10.1038/s41467-021-26139-5
摘要
Interlayer spacing is expected to influence the properties of multilayer two-dimensional (2D) materials. However, the ability to non-destructively regulate the interlayer spacing bidirectionally and reversibly is challenging. Here we report the preparation of 2D materials with tunable interlayer spacing by introducing active sites (Ce ions) in 2D materials to capture and immobilize Pt single atoms. The strong chemical interaction between active sites and Pt atoms contributes to the intercalation behavior of Pt atoms in the interlayer of 2D materials and further promotes the formation of chemical bonding between Pt atom and host materials. Taking cerium-embedded molybdenum disulfide (MoS2) as an example, intercalation of Pt atoms enables interlayer distance tuning via an electrochemical protocol, leading to interlayer spacing reversible and linear compression and expansion from 6.546 ± 0.039 Å to 5.792 ± 0.038 Å (~11 %). The electronic property evolution with the interlayer spacing variation is demonstrated by the photoluminescence (PL) spectra, delivering that the well-defined barrier between the multilayer and monolayer layered materials can be artificially designed.
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