<br>相纯超薄 1T/1T' 过渡金属二硫属化物纳米片的合成最新策略,Chemical Reviews

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相纯超薄 1T/1T' 过渡金属二硫属化物纳米片的合成最新策略
Chemical Reviews ( IF 51.4 ) Pub Date : 2023-12-26 , DOI: 10.1021/acs.chemrev.3c00422
Baohu Dai ₁ , Yueqi Su ₁ , Yuqiao Guo ₁ , Changzheng Wu ₁ , Yi Xie ₁

Affiliation

在过去的几十年里，过渡金属二硫属化物 (TMD) 相关研究显着增加，不仅因为 TMD 候选材料种类繁多，而且还因为单层配置和层堆叠顺序产生的各种多型体。 TMD 纳米片独特的理化性质使得基于高质量 TMD 制备的基础科学到工业技术的广泛应用成为可能。对于多晶型 TMD，1T/1T' 相特别令人感兴趣，因为它具有丰富的态密度，从而促进了富有成效的化学反应。在此，我们全面讨论了直接合成相纯1T/1T'TMD纳米片的最新策略，如机械剥离、化学气相沉积、湿化学合成、原子层沉积等。我们还回顾了 TMD 纳米片中常用的相工程方法，包括化学掺杂和合金化、电荷注入以及光学或带电粒子束照射。在合成方法之前，我们讨论了 TMD 的配置以及实验中最常用的表征工具。最后，我们讨论了当前的挑战和机遇，并强调了未来发展的有前景的领域。

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Recent Strategies for the Synthesis of Phase-Pure Ultrathin 1T/1T′ Transition Metal Dichalcogenide Nanosheets

The past few decades have witnessed a notable increase in transition metal dichalcogenide (TMD) related research not only because of the large family of TMD candidates but also because of the various polytypes that arise from the monolayer configuration and layer stacking order. The peculiar physicochemical properties of TMD nanosheets enable an enormous range of applications from fundamental science to industrial technologies based on the preparation of high-quality TMDs. For polymorphic TMDs, the 1T/1T′ phase is particularly intriguing because of the enriched density of states, and thus facilitates fruitful chemistry. Herein, we comprehensively discuss the most recent strategies for direct synthesis of phase-pure 1T/1T′ TMD nanosheets such as mechanical exfoliation, chemical vapor deposition, wet chemical synthesis, atomic layer deposition, and more. We also review frequently adopted methods for phase engineering in TMD nanosheets ranging from chemical doping and alloying, to charge injection, and irradiation with optical or charged particle beams. Prior to the synthesis methods, we discuss the configuration of TMDs as well as the characterization tools mostly used in experiments. Finally, we discuss the current challenges and opportunities as well as emphasize the promising fields for the future development.

更新日期：2023-12-26

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