journal article·2024-02-13

Light-Induced Variation of Lithium Coordination Environment in g-C3N4 Nanosheet for Highly Efficient Oxygen Reduction Reactions

Chunqiang Zhuang, Yuan Chang, Weiming Li, Shijie Li, Peng Xu, Hang Zhang, Yihong Zhang, Can Zhang, Junfeng Gao, Ge Chen, Tianyang Zhang, Zhenhui Kang, Xiaodong Han

ACS Nano· Volume 18· Issue 6
Publisher page

Abstract

The structure and electronic state of the active center in a single-atom catalyst undergo noticeable changes during a dynamic catalytic process. The metal atom active center is not well demonstrated in a dynamic manner. This study demonstrated that Li metal atoms, serving as active centers, can migrate on a C 3 N 4 monolayer or between C 3 N 4 monolayers when exposed to light irradiation. This migration alters the local coordination environment of Li in the C 3 N 4 nanosheets, leading to a significant enhancement in photocatalytic activity. The photocatalytic H 2 O 2 process could be maintained for 35 h with a 920 mmol/g record-high yield, corresponding to a 0.4% H 2 O 2 concentration, which is far greater than the value (0.1%) of practical application for wastewater treatment. Density functional theory calculations indicated that dynamic Li-coordinated structures contributed to the superhigh photocatalytic activity.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Photocatalysis Techniques · MXene and MAX Phase Materials · Ammonia Synthesis and Nitrogen Reduction

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

Affiliations

Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, People’s Republic of China

Laboratory of Materials Modification by Laser Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, People’s Republic of China

Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, National Engineering Research Center for Marine Aquaculture, College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, People’s Republic of China

National Center for Nanoscience and Technology, Beijing 100190, People’s Republic of China

Beijing Key Laboratory for Green Catalysis and Separation, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, People’s Republic of China

Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China

Macao Institute of Materials Science and Engineering (MIMSE), MUST−SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa 999078, Macao, People’s Republic of China

Funding

Beijing Outstanding Young Talents · National Natural Science Foundation of China

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