Interface-mediated noble metal deposition on transition metal dichalcogenide nanostructures.,Nature Chemistry

当前位置： X-MOL 学术 › Nat. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Interface-mediated noble metal deposition on transition metal dichalcogenide nanostructures.
Nature Chemistry ( IF 19.2 ) Pub Date : 2020-02-24 , DOI: 10.1038/s41557-020-0418-3
Yifan Sun _{1,

2,

3} , Yuanxi Wang _{2,

3,

4,

5} , Jamie Y C Chen ₁ , Kazunori Fujisawa _{2,

3,

4} , Cameron F Holder ₁ , Jeffery T Miller ₆ , Vincent H Crespi _{1,

2,

3,

4,

5,

7} , Mauricio Terrones _{1,

2,

3,

4,

7} , Raymond E Schaak _{1,

2,

8}

Affiliation

Functionalizing the surfaces of transition metal dichalcogenide (TMD) nanosheets with noble metals is important for electrically contacting them to devices, as well as improving their catalytic and sensing capabilities. Solution-phase deposition provides a scalable approach to the creation of metal-TMD hybrid systems, but controlling such processes remains challenging. Here we elucidate the different pathways by which gold and silver deposit at room temperature onto colloidal 1T-WS2, 2H-WS2, 2H-MoSe2, 2H-WSe2, 1T'-MoTe2 and Td-WTe2 few-layer nanostructures to produce several distinct classes of 0D-2D and 2D-2D metal-TMD hybrids. Uniform gold nanoparticles form on all of the TMDs. By contrast, silver deposits as nanoparticles with a bimodal size distribution on the disulfides and diselenides, and as atomically thin layers on the ditellurides. The various sizes and morphologies of these surface-bound metal species arise from the relative strengths of the interfacial metal-chalcogen bonds during the reduction of Au3+ or Ag+ by the TMDs.

中文翻译：

介导的贵金属在过渡金属二硫化碳纳米结构上的沉积。

用贵金属对过渡金属二硫化碳（TMD）纳米片的表面进行功能化对于将其与设备电接触以及改善其催化和传感功能非常重要。固溶相沉积为金属-TMD混合系统的创建提供了可扩展的方法，但是控制此类过程仍然具有挑战性。在这里，我们阐明了金和银在室温下沉积到胶体1T-WS2、2H-WS2、2H-MoSe2、2H-WSe2、1T'-MoTe2和Td-WTe2几层纳米结构上以产生几种不同类别的不同途径。 0D-2D和2D-2D金属-TMD混合体。均匀的金纳米颗粒在所有TMD上形成。相比之下，银以双峰尺寸分布的纳米颗粒形式沉积在二硫化物和二硒化物上，并且原子沉积为二碲化物上的原子薄层。

更新日期：2020-02-24

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11