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北京石油化工學(xué)院2026年研究生招生接收調(diào)劑公告

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海天天意

鐵桿木蟲 (正式寫手)

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[交流] Acc. Chem. Res.1.02新鮮在線大牛崔毅二維層狀硫化物已有2人參與

Two-Dimensional Layered Chalcogenides: From Rational Synthesis to Property Control via Orbital Occupation and Electron Filling
Published as part of the Accounts of Chemical Research special issue “2D Nanomaterials beyond Graphene”.
Hongtao Yuan,†,‡ Haotian Wang,§ and Yi Cui*,†,‡,∥
（10頁 54篇文獻(xiàn)，全文介紹請(qǐng)看摘要哈）
二維硫化物（比如：MoS2）是目前研究的熱點(diǎn)領(lǐng)域之一。各種制備方法以及應(yīng)用領(lǐng)域都在不斷拓展。本文重點(diǎn)報(bào)道了：CUIYI團(tuán)隊(duì)從理論的角度在二維硫化物合理設(shè)計(jì)、化學(xué)、電化學(xué)以及物理化學(xué)性質(zhì)的電動(dòng)調(diào)節(jié)通過修飾電子的占有情況.......的一些工作，值得學(xué)習(xí)。
ABSTRACT: Electron occupation of orbitals in two-dimensional (2D) layered materials controls the magnitude and anisotropy of the interatomic
electron transfer and exerts a key influence on the chemical bonding modes of 2D layered lattices. Therefore, their orbital occupations
are believed to be responsible for massive variations of the physical and chemical properties from electrocatalysis and energy storage,
to charge density waves, superconductivity, spin−orbit coupling, and valleytronics. Especially in nanoscale structures such as nanoribbons,
nanoplates, and nanoflakes, 2D layered materials provide opportunities to exploit new quantum phenomena.
In this Account, we report our recent progress in the rational design and chemical, electrochemical, and electrical modulations of the physical
and chemical properties of layered nanomaterials via modification of the electron occupation in their electronic structures. Here, we start with
the growth and fabrication of a group of layered chalcogenides with varied orbital occupation (from 4d/5d electron configuration to 5p/6p
electron configuration). The growth techniques include bottom-up methods, such as vapor−liquid−solid growth and vapor−solid growth,
and top-down methods, such as mechanical exfoliation with tape and AFM tip scanning.
Next, we demonstrate the experimental strategies for the tuning of the chemical potential (orbital occupation tuned with electron
filling) and the resulting modulation of the electronic states of layered materials, such as electric-double-layer gating, electrochemical
intercalation, and chemical intercalation with molecule and zerovalence metal species. Since the properties of layered
chalcogenides are normally dominated by the specific band structure around which the chemical potential is sitting, their desired
electronic states and properties can be modulated in a large range, showing unique phenomena including quantum electronic
transport and extraordinary optical transmittance.
As the most important part of this Account, we further demonstrate some representative examples for the tuning of catalytic,
optical, electronic, and spintronic properties of 2D layered chalcogenides, where one can see not only edge-state induced
enhancement of catalysis, quantum Aharonov−Bohm interference of the topological surface states, intercalation modulated
extraordinary transmittance, and surface plasmonics but also external gating induced superconductivity and spin-coupled valley
photocurrent. Since our findings reflect the critical influences of the electron filling of orbital occupation to the properties in 2D
layered chalcogenides, we thus last highlight the importance and the prospective of orbital occupation in 2D layered materials for
further exploring potential functionalized applications.

1.jpg

[ Last edited by 海天天意 on 2015-1-4 at 14:09 ]

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附件 1 : CUI_YI___ar5003297.pdf

2015-01-02 23:17:16, 821.05 K

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