Facile and accelerated production of RuO2 monolayers via a dual-step intercalation process,Inorganic Chemistry Frontiers

当前位置： X-MOL 学术 › Inorg. Chem. Front. › 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.)

Facile and accelerated production of RuO2 monolayers via a dual-step intercalation process
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020/02/13 , DOI: 10.1039/c9qi01678c
Se Yun Kim _{1,

2,

3,

4} , Weon Ho Shin _{4,

5,

6,

7} , Doh Won Jung _{1,

2,

3,

4} , Dong-Su Ko _{2,

3,

4,

8} , Jong Wook Roh _{4,

9,

10,

11} , Sungwoo Hwang _{1,

2,

3,

4} , Jongmin Lee _{1,

2,

3,

4} , Kimoon Lee _{4,

12,

13,

14} , Hee Jung Park _{4,

15,

16,

17} , Chan Kwak _{1,

2,

3,

4} , Sang-il Kim _{4,

15,

18,

19} , Hyung Mo Jeong _{4,

20,

21,

22} , Kyu Hyoung Lee _{4,

7,

15,

23} , Hyun Sik Kim _{4,

15,

24,

25}

Affiliation

Inorganic Material Lab
Samsung Advanced Institute of Technology
Suwon
Republic of Korea
Department of Electronic Materials Engineering
Kwangwoon University
Seoul
Autonomous Material Development Lab
School of Nano & Materials Science and Engineering
Kyungpook National University
Sangju
Department of Physics
Kunsan National University
Gunsan
Department of Materials Science and Engineering
Dankook University
Cheonan
University of Seoul
Seoul 02504
School of Mechanical Engineering
Sungkyunkwan University
Suwon 16419
Yonsei University
Hongik University
Seoul 04066

Tetrabutylammonium ions (TBA⁺) have commonly been used to exfoliate RuO₂ into monolayers via ion exchange reactions. However, the low production yield of RuO₂ exfoliation, which originates from the large molecular size of TBA⁺, limits wider utilisation of RuO₂ monolayers in optoelectronic applications. We introduce a rapid and efficient dual-step exfoliation process beginning with intercalation of small organic molecules (tetramethylammonium ions) into RuO₂, which is followed by the addition of TBA⁺ as a second intercalant to realize RuO₂ monolayer production. Our dual-step intercalation process increases the RuO₂ monolayer exfoliation yield from 9.9% to 60% after 14 days. Density functional theory calculations reveal that the activation energy of dual-step intercalation is much lower than that of direct intercalation of TBA⁺ ions into the RuO₂ structure. The experimental and theoretical results of dual-step intercalation suggest that it is a facile and general approach for the production of metal oxide monolayers, and could widen the use of metal oxide monolayer nanosheets.

中文翻译：

通过两步插入过程轻松快速地生产RuO2单层

四丁基铵离子（TBA ⁺）通常用于通过离子交换反应将RuO ₂剥离成单层。然而，由于TBA ^+的分子大小大，RuO ₂剥落的产率低，限制了RuO ₂单层在光电应用中的广泛利用。我们引入了一种快速有效的双步剥落工艺，该过程首先是将小的有机分子（四甲基铵离子）插入RuO _2中，然后添加TBA ⁺作为第二种插入剂以实现RuO ₂单层生产。14天后，我们的双步插入过程将RuO ₂单层剥落率从9.9％提高到60％。密度泛函理论计算表明，双步嵌入的活化能远低于将TBA ⁺离子直接嵌入RuO ₂结构的活化能。双步插层的实验和理论结果表明，这是一种生产金属氧化物单层的简便通用方法，可以扩大金属氧化物单层纳米片的用途。

更新日期：2020-03-19

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