DataVXACS NanoPaper
journal article·2021-03-23

Pulsed Laser Confinement of Single Atomic Catalysts on Carbon Nanotube Matrix for Enhanced Oxygen Evolution Reaction

Sukhyun Kang, Young Kyu Jeong, Sungwook Mhin, Jeong Ho Ryu, Ghulam Ali, Kangpyo Lee, Muhammad Akbar, Kyung Yoon Chung, HyukSu Han, Kang Min Kim

ACS Nano· Volume 15· Issue 3
Publisher page
Source abstract

Abstract

The design of atomically dispersed single atom catalysts (SACs) must consider high metal-atom loading amount, effective confinement, and strong interactions with matrix, which can maximize their catalytic performance. Here reported is a promising method to synthesize SACs on highly conductive multiwall carbon nanotube (MWCNT) supports using pulsed laser confinement (PLC) process in liquid. Atomic cobalt (Co) and phosphorus (P) with a high loading density are homogeneously incorporated on the outer wall of the MWCNT (Co–P SAC MWCNT). Density functional theory (DFT) calculations in combination with systematic control experiments found that the incorporated Co and P adatoms act as an adsorption energy optimizer and a charge transfer promoter, respectively. Hence, favorable kinetics and thermodynamics in Co–P SAC MWCNT can be simultaneously achieved for water oxidation resulting in a superior catalytic performance than the benchmark RuO2 catalyst. Crucially, total processing time for assembling Co–P SAC MWCNT via PLC process is less than 60 min, shedding light on the promising practical applications of our SAC design strategy.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Catalytic Processes in Materials Science · Electrochemical Analysis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Korea Institute of Industrial Technology (KITECH), 137-41 Gwahakdanji-ro, Gangneung-si, Gangwon 25440, Republic of Korea

Department of Advanced Materials Engineering, Kyonggi University, Suwon 16227, Korea

Department of Materials Science and Engineering, Korea National University of Transportation, 50 Daehak-ro, Chungju-si, Chungbuk 27469, Republic of Korea

U.S.-Pakistan Center for Advanced Studies in Energy (USPCASE), National University of Science and Technology (NUST), H-12, Islamabad, Pakistan

Center for Energy Storage Research, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea

Division of Energy and Environment Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea

Department of Energy Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea

Funding

National Research Foundation of Korea · Korea Institute of Science and Technology

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