气候变化领域集成服务门户(CCPortal): A general polymer-assisted strategy enables unexpected efficient metal-free oxygen-evolution catalysis on pure carbon nanotubes

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DOI	10.1039/c7ee01702b
	A general polymer-assisted strategy enables unexpected efficient metal-free oxygen-evolution catalysis on pure carbon nanotubes
	Zhang Y.; Fan X.; Jian J.; Yu D.; Zhang Z.; Dai L.
发表日期	2017
ISSN	17545692
起始页码	2312
结束页码	2317
卷号	10 期号:11
英文摘要	A conceptually new and general strategy was, for the first time, proposed to significantly boost the electrocatalytic activity of metal-free pure carbon nanotubes (CNTs) towards the oxygen evolution reaction (OER) by simple polymer wrapping without introducing any heteroatom dopants, functional groups, or edge defects into the graphitic structure. Our strategy is straightforward, efficient, green, and easy to be scaled up. After wrapping pure CNTs with a certain class of electrochemically inert polymers (i.e. poly(ethylene-alt-maleic acid), poly(vinyl alcohol), poly(vinyl acetate), poly(ethylene glycol)) with polar oxygen-containing groups (i.e. -COOH, -OH, -COOCH3, -O-) through noncovalent interactions, a series of advanced metal-free composite membrane catalysts were easily achieved, which yielded unexpected, surprisingly high OER activity-on par with the commercial noble RuO2 catalyst, though pure CNTs have rather poor OER activity. Combined experimental and computational studies revealed that the observed superb OER activity could be attributed to a synergistic effect of intrinsic topological defects in the CNTs as active centers and the coated polymer layer as a co-catalyst to optimize the adsorption energies of intermediates for improving the OER energetics. © The Royal Society of Chemistry 2017.
英文关键词	Carbon; Catalysts; Composite membranes; Ethylene; Ions; Nanotubes; Oxygen; Polyethylene glycols; Polymers; Polyvinyl acetates; Polyvinyl alcohols; Ruthenium compounds; Yarn; Adsorption energies; Computational studies; Electrocatalytic activity; Graphitic structures; Non-covalent interaction; Oxygen containing groups; Oxygen evolution reaction; Topological defect; Carbon nanotubes; adsorption; catalysis; catalyst; efficiency measurement; electrochemical method; experimental study; graphite; inorganic compound; oxygen; polymer
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190375
作者单位	Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Key Laboratory of High Performance Polymer-based Composites of Guangdong Province, School of Chemistry Sun Yat-Sen University, Guangzhou, 510275, China; Department of Macromolecule Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
推荐引用方式 GB/T 7714	Zhang Y.,Fan X.,Jian J.,et al. A general polymer-assisted strategy enables unexpected efficient metal-free oxygen-evolution catalysis on pure carbon nanotubes[J],2017,10(11).
APA	Zhang Y.,Fan X.,Jian J.,Yu D.,Zhang Z.,&Dai L..(2017).A general polymer-assisted strategy enables unexpected efficient metal-free oxygen-evolution catalysis on pure carbon nanotubes.Energy & Environmental Science,10(11).
MLA	Zhang Y.,et al."A general polymer-assisted strategy enables unexpected efficient metal-free oxygen-evolution catalysis on pure carbon nanotubes".Energy & Environmental Science 10.11(2017).