A Universal Graphene Quantum Dot Tethering Design Strategy to Synthesize Single‐Atom Catalysts

Autor:	Ting-Shan Chan, Zhenhua Yan, Yajuan Wei, Jun Chen, Youxuan Ni, Song Jin, Zhimeng Hao, Kai Zhang, Yong Lu, Ying-Rui Lu
Rok vydání:	2020
Předmět:	Materials science 010405 organic chemistry Graphene chemistry.chemical_element General Chemistry Carbon nanotube General Medicine 010402 general chemistry 01 natural sciences Graphene quantum dot Catalysis 0104 chemical sciences law.invention Metal chemistry Chemical engineering law Quantum dot visual_art visual_art.visual_art_medium Graphite Carbon Nanosheet
Zdroj:	Angewandte Chemie. 132:22069-22073
ISSN:	1521-3757 0044-8249
Popis:	A general graphene quantum dot-tethering design strategy to synthesize single-atom catalysts (SACs) is presented. The strategy is applicable to different metals (Cr, Mn, Fe, Co, Ni, Cu, and Zn) and supports (0D carbon nanosphere, 1D carbon nanotube, 2D graphene nanosheet, and 3D graphite foam) with the metal loading of 3.0-4.5 wt %. The direct transmission electron microscopy imaging and X-ray absorption spectra analyses confirm the atomic dispersed metal in carbon supports. Our study reveals that the abundant oxygenated groups for complexing metal ions and the rich defective sites for incorporating nitrogen are essential to realize the synthesis of SACs. Furthermore, the carbon nanotube supported Ni SACs exhibits high electrocatalytic activity for CO2 reduction with nearly 100 % CO selectivity. This universal strategy is expected to open up new research avenues to produce SACs for diverse electrocatalytic applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cdc7ed2f3cd17fc0b9d9b3e3c73eb37 https://doi.org/10.1002/ange.202008422 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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