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정렬번호 31 
메인 제목 “Atomic scale tackling of greenhouse gas” highlighted by KAIST Compass 
메인 소개 내용 SCALE lab’s CO2 work has been highlighted by KAIST Compass

See the following link
Atomic scale tackling of greenhouse gas - KAIST Compass

https://kaistcompass.kaist.ac.kr/?category_id=9&magazine=atomic-scale-tackling-of-greenhouse-gas 

scale lab group website 0516-3.jpg

 

SCALE lab’s CO2 work has been highlighted by KAIST Compass

 

See the following link

Atomic scale tackling of greenhouse gas - KAIST Compass

 

 

https://kaistcompass.kaist.ac.kr/?category_id=9&magazine=atomic-scale-tackling-of-greenhouse-gas

 

Atomic scale tackling of greenhouse gas

Sharply rising level of CO, a major greenhouse gas, have escalated a climate crisis that affects the living conditions of humankind, leading to the most uncertain natural environment on our planet since the agricultural revolution. A fundamental understanding of chemical processes of CO on catalytic surfaces is of great importance for facile utilization and storage of CO. The research team led by Prof. Park observed the CO dissociation process at the atomic level by using ambient pressure scanning tunneling microscopy. Furthermore, the selectivity of generation of CO during the catalytic reaction was controlled by engineering metal-oxide interfaces and hot electron flux.

 Utilization of carbon dioxide (CO) molecules has led to increased interest in the sustainable synthesis of methane or methanol. The representative reaction intermediate consisting of a carbonyl or formate group determines yields of the fuel source during catalytic reactions. However, the selective initial surface reaction processes have been assumed without a fundamental understanding at the molecular level. In collaboration with Professor Hyun You Kim from the Department of Materials Science and Engineering, Chungnam National University, and Prof. Bongjin Simon Mun at the Department of Physics, GIST, the research team at KAIST carried out in situ observations of spontaneous CO dissociation over the model rhodium (Rh) catalyst at 0.1 mbar CO. The linear geometry of CO gas molecules turns into a chemically active bent structure at the interface, which allows non-uniform charge transfer between chemisorbed CO and surface Rh atoms. By combining scanning tunneling microscopy, X-ray photoelectron spectroscopy at near-ambient pressure, and computational calculations, the team revealed strong evidence for chemical bond cleavage of O‒CO* with ordered intermediate structure formation of (2 × 2)-CO on an atomically flat Rh(111) surface at room temperature [1] (Figure 1). These combined investigations provide fundamental insights for determining the selectivity of energy source production at the molecular level and therein contribute to the rational design of catalytic factors for improving CO utilization. This study was published in Nature Communications in November 2020.

 Another important way to control catalysts is via engineering metal-oxide interfaces, which are associated with energy dissipation and conversion processes during surface reactions, on a catalytic nanodiode. The architecture of these devices allows for quick extraction of hot electrons across metal–semiconductor interfaces before thermalization, thereby supplying key evidence of non-adiabatic charge transfer during surface reactions.
In collaboration with Professor Yousung Jung from the Department of Chemical and Biomolecular Engineering, and Prof. Yeon Sik Jung from the Department of Materials Science and Engineering, the research team at KAIST demonstrated a novel strategy to control the catalytic selectivity using hot electron flux on catalytic nanodiodes.[2] The team showed that the selectivity toward the generation of CO
 can be reduced during methanol oxidation by engineering metal-oxide interfaces. They observed the reaction-induced electronic excitation at the nanoscale metal-oxide interface, which was made possible by the real-time detection of hot electrons excited by the catalytic reaction in the newly designed Pt nanowires/TiO2 system (Figure 2). This technique for using the catalytic nanodiodes provides a powerful and highly sensitive tool for studying the processes of charge transfer at metal-oxide interfaces excited by surface chemical reactions. This study was published in Nature Communications in January 2021.

[References]
1. Jeongjin Kim, Hyunwoo Ha, Won Hui Doh, Kohei Ueda, Kazuhiko Mase, Hiroshi Kondoh, Bongjin Simon Mun*, Hyun You Kim* and Jeong Young Park*
How Rh surface breaks CO
molecules under ambient pressure
Nat. Comm 11, 5649 (2020) [https://www.nature.com/articles/s41467-020-19398-1]

2. Si Woo Lee, Jong Min Kim, Woonghyeon Park, Hyosun Lee, Gyu Rac Lee, Yousung Jung*, Yeon Sik Jung*, and Jeong Young Park*
Controlling hot electron flux and catalytic selectivity with nanoscale metal-oxide interfaces
Nat. Comm. 12, 40 (2021) [https://www.nature.com/articles/s41467-020-20293-y]

 

scale lab group website 0516-4.jpg

 

Figure 1.Representative atomic-resolution scanning tunneling microscopy images of (left) clean Rh (111) surface, and (center) Rh under CO, and (right) Rh under CO gas conditions. Images in the bottom show atomistic ball model illustrations of the surfaces. Dark blue, black, and red balls represent Rh, C, and O atoms, respectively.

 

scale lab group website 0516-5.jpg

Figure 2.The scheme showing the novel strategy to control the catalytic selectivity by catalytic nanodiode. The selectivity toward CO can be reduced by engineering metal-oxide interfaces

Web address for full article : https://www.nature.com/articles/s41467-020-19398-1
https://www.nature.com/articles/s41467-020-20293-y

the Name of Journal : Nature Communications

 

Laboratory web-address of the author : http://scale.kaist.ac.kr/

 

번호 제목 글쓴이 날짜 조회 수
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공지 Nature Comm paper about CO2 Dissociation on Cu(997) was publicized. 관리자 2023.09.12 304
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공지 SCALE lab members attended the 19th Korea-Japan Symposium on Catalysis (May 15-17, 2023), and Kyoungjae won Oral Presentation Award. 관리자 2023.05.30 1543
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공지 Professor Park gave a talk at the Great Scholar Decisions (2023. 3. 10). 관리자 2023.04.03 1911
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공지 Prof. Park was elected to be the member of Korean Academy of Science and Technology (2023). 관리자 2022.11.28 2298
공지 SCALE lab members attended AVS 68th International Symposium & Exhibition (Pittsburgh, PA USA, November 6-11, 2022) 관리자 2022.11.28 2402
공지 SCALE lab members attended Korean Chemical Society Meeting (Gyeongju, Oct 19-21) 관리자 2022.11.28 2457
공지 The talk entitled “Atomic Scale Friction Properties of Two-dimensional Intercalated Water Layers” was given at Korean Tribology Society Meeting and Best presentation award was given. 관리자 2022.11.28 2730
공지 Dr. Heeyoung Kim’s work was published in The Journal of Chemical Physics and selected as Issue Cover 관리자 2022.09.14 2446
공지 Dr. Woosuk Choi’s work (in collaboration with Prof. Ryong Ryoo) was published in Carbon and selected as Issue Cover 관리자 2022.04.18 4195
공지 Group members got poster awards from 18JKSC, PAL user meeting, and IWOX-XIII 관리자 2022.02.15 6011
공지 Yongman Kim’s paper has been selected as the Back Cover of Advanced Materials Interfaces 관리자 2022.02.15 3317
공지 Prof. Park chaired the 13th International Workshop on Oxide Surfaces (IWOX-XIII). 관리자 2022.02.15 2750
공지 the 13th International Workshop on Oxide Surfaces (IWOX-XIII) will be held in Pyeongchang, Republic of Korea 관리자 2021.05.17 6586
» “Atomic scale tackling of greenhouse gas” highlighted by KAIST Compass 관리자 2021.05.17 6845
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공지 Outside Front Cover was selected for Hanseul’s Catalysis Science & Technology paper 관리자 2021.03.08 3841
공지 Park Yujin was selected as one of recipient of Posco Science Fellowship in 2020 관리자 2020.11.16 8836
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공지 Dr. Mondal’s Advanced Functional Materials paper was selected as Inside Front Cover. 관리자 2020.01.27 22723
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공지 Dr. Sunyoung Oh’s paper will appear as a Feature Article in JCP in a special topic on 관리자 2020.01.27 30176
공지 Advanced Functional Materials paper (in collaboration with Prof. Jong Hoon Jung in Inha Univ) was selected as Front Cover. 관리자 2019.11.18 29316
공지 Hot electron research of SCALE laboratory was highlighted in Electronic Newspaper 관리자 2019.11.18 20970
공지 Two-dimensional FeS2 encapsulated Au was selected as the Inside Cover 관리자 2019.09.27 25855
공지 IBS-RIKEN Joint Symposium [Oct 17-18] 관리자 2019.09.27 31214
공지 Perovskite-based hot electron plasmonic nanodiode was developed. The higher hot electron flux and longer lifetime were observed on this photovoltaic device. 관리자 2019.08.27 38572
공지 IBS-KAIST Symposium on Operando Surface Science and Catalysis 관리자 2019.03.27 40833
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공지 Professor Park wrote the Perspective Article in Science regarding self-cleaning on TiO2 관리자 2018.10.29 39509
공지 Highlight article about ambient pressure STM was introduced in Chemistry World (Korean) 관리자 2018.10.29 53338
공지 Kalyan and Hyosun’s ChemComm paper was selected as Inside Cover 관리자 2018.08.17 43069
공지 Sunyoung’s work was selected as Inside Front Cover of ChemComm 관리자 2018.08.17 50448
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공지 Nature Communications paper was highlighted in Nature Research Chemistry Community 관리자 2018.06.08 56821
공지 Front Cover Selected in Nanoscale 관리자 2018.06.08 72582
공지 The Fifth Symposium of Center for Nanomaterials and Chemical Reactions 관리자 2018.05.14 47129
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공지 Dr. Joong Il Jake Choi received the first prize at Best Poster Awards of ISEST 2018. 관리자 2018.01.22 66602
공지 Dr. Hyunsoo Lee was selected as one of the winners of 2017 IBS Outstanding Researcher Awards. 관리자 2017.12.22 61644
공지 IBS CNCR Symposium : Surface Chemistry and Catalysis 관리자 2017.10.25 65192
공지 Review article about “catalytronics” was published. 관리자 2017.09.11 73976
공지 EEWS 2016 Workshop was introduced in ACS Energy Letters 관리자 2017.02.17 85188
공지 Hot electron work was selected as KAIST Top 10 Research Achievements 관리자 2017.02.17 78369
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공지 IBS Symposium on “Understanding photocatalytic materials at the atomic level” was held on July 14 관리자 2016.09.12 71965
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