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Intelligently assembly of W_(18)O_(49)nanorod clusters with directionally generated oxygen vacancies and excellent electrochemical properties

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Nano Research 2022年第4期15卷 3575-3586页

作者： Dan Zhou Xiaojiao Guo Yixiang Chen Xiaoyu Yuan Jinku Liu Key Laboratory for Advanced Materials School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

Mixed-valence metallic compounds are a class of functional materials with peculiar electrochemical *** the correlation between defects and corrosion resistance of mixed-valence metallic compounds is a novel and interesting *** an intelligently designed synergistic process of reduction and directed assembly,not only the directional generation of oxygen vacancies along the normal direction of the(010)crystal plane was achieved,but also the W_(18)O_(49)mixed-valence metal oxide(MVMO)with a single crystalline phase and an assembled ordered three-dimensional cluster structure of nanorods was *** attractive effects of oriented oxygen vacancies in W_(18)O_(49)MVMO were ***,the oxygen vacancy channels realized the directional concentrated transport of oxygen atoms to form dense oxide passivation ***,the directional concentrated oxygen vacancies as active centers effectively solved the problem of difficult photoelectron leap and separation of pure-phase semiconductors,realizing photogenerated cathodic ***,the high-energy vacancies endowed the material with antibacterial function,which contributed to the stable existence of the anti-corrosion *** resistance value of W_(18)O_(49)MVMO as an anti-corrosion functional material was increased to more than 4.00 times that of the original metal protection *** experimental results obtained in this research were of great reference value for revealing the intrinsic mechanism of correlation between oxygen defect orientation of MVMOs and electrochemistry.

关键词： oxygen vacancy directional generated W_(18)O_(49) mixed-valence metal oxide electrochemical properties

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