Visualizing the Anomalous Catalysis in Two-Dimensional Confined Space

Wang, Zhu-Jun1,2,3; Liang, Zhihua1,2; Kong, Xiao4; Zhang, Xiaowen1,2; Qiao, Ruixi5,6; Wang, Jinhuan5; Zhang, Shuai7; Zhang, Zhiqun3; Xue, Chaowu3; Cui, Guoliang1,2; Zhang, Zhihong8; Zou, Dingxin9; Liu, Zhi3; Li, Qunyang7; Wei, Wenya1,2; Zhou, Xu1,2; Tang, Zhilie1,2; Yu, Dapeng9; Wang, Enge6,10,11; Liu, Kaihui5,6; Ding, Feng4,12; Xu, Xiaozhi1,2

2022-05-31

10.1021/acs.nanolett.2c00549

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

Confined nanospaces provide a new platform to promote catalytic reactions. However, the mechanism of catalytic enhancement in the nanospace still requires insightful exploration due to the lack of direct visualization. Here, we report operando investigations on the etching and growth of graphene in a two-dimensional (2D) confined space between graphene and a Cu substrate. We observed that the graphene layer between the Cu and top graphene layer was surprisingly very active in etching (more than 10 times faster than the etching of the top graphene layer). More strikingly, at a relatively low temperature (similar to 530 degrees C), the etched carbon radicals dissociated from the bottom layer, in turn feeding the growth of the top graphene layer with a very high efficiency. Our findings reveal the in situ dynamics of the anomalous confined catalytic processes in 2D confined spaces and thus pave the way for the design of high-efficiency catalysts.

confined nanospaces graphene catalysis operando observation in-plan evolution

SCI ; EI

英语

NI论文

其他

National Natural Science Foundation of China[12027804,52102043,52025023,51991342,52021006,11888101] ; Guangdong Provincial Science Fund for Distinguished Young Scholars[2020B1515020043] ; Science and Technology Program of Guangzhou[2019050001] ; Key R&D Program of Guangdong Province["2020B010189001","2019B010931001","2018B030327001"] ; Beijing Natural Science Foundation[JQ19004] ; Pearl River Talent Recruitment Program of Guangdong Province[2019ZT08C321] ; Institute for Basic Science of South Korea[IBS-R019-D1]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000815682300001

AMER CHEMICAL SOC

20222512251313

Catalysis ; Efficiency ; Etching ; Temperature

Thermodynamics:641.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Production Engineering:913.1

MATERIALS SCIENCE

Web of Science

1.South China Normal Univ, Sch Phys & Telecommun Engn, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Guangzhou 510631, Peoples R China
2.South China Normal Univ, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510631, Peoples R China
3.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
4.Inst Basic Sci, Ctr Multidimens Carbon Mat, Ulsan 44919, South Korea
5.Peking Univ, Frontiers Sci Ctr Nanooptoelect, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
6.Peking Univ, Int Ctr Quantum Mat, Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
7.Tsinghua Univ, Dept Engn Mech, State Key Lab Tribol, Beijing 100084, Peoples R China
8.Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Inst Multidisciplinary Innovat, Beijing 100083, Peoples R China
9.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
10.Chinese Acad Sci, Inst Phys, Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
11.Liaoning Univ, Sch Phys, Shenyang 110036, Peoples R China
12.Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 44919, South Korea

Wang, Zhu-Jun,Liang, Zhihua,Kong, Xiao,et al. Visualizing the Anomalous Catalysis in Two-Dimensional Confined Space[J]. NANO LETTERS,2022,22(12):4661-4668.

Wang, Zhu-Jun.,Liang, Zhihua.,Kong, Xiao.,Zhang, Xiaowen.,Qiao, Ruixi.,...&Xu, Xiaozhi.(2022).Visualizing the Anomalous Catalysis in Two-Dimensional Confined Space.NANO LETTERS,22(12),4661-4668.

Wang, Zhu-Jun,et al."Visualizing the Anomalous Catalysis in Two-Dimensional Confined Space".NANO LETTERS 22.12(2022):4661-4668.