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Vertically aligned γ-AlOOH nanosheets on Al foils as flexible and reusable substrates for NH3 adsorption
journal contribution
posted on 2018-08-01, 00:00 authored by C Yang, Ying (Ian) ChenYing (Ian) Chen, Dan LiuDan Liu, Jinfeng Wang, Cheng Chen, Jiemin Wang, Ye Fan, S Huang, Weiwei LeiWeiwei LeiVertically aligned γ-AlOOH nanosheets (NSs) have been successfully fabricated on flexible Al foils via a solvothermal route without morphology-directing agents. Three different reaction temperature (25, 80, and 120 ◦C) and time (30 min, 45 min, and 24 h) are discussed for the growth period, which efficiently tune the density and size of the γ-AlOOH NSs. Meanwhile, the growth speed of the nanosheets confirms that dominant growth stage is seen in the initial 45 min. Furthermore, the interlayer of the γ-AlOOH NSs displays an average height of 140 nm and superhydrophilicity. By dynamic adsorption, the assynthesized γ-AlOOH NSs exhibit an outstanding NH3adsorption capacity of up to 146 mg/g and stably excellent regeneration for 5 cycles. The mechanism of NH3adsorption on the in-plane of the γ-AlOOH NSs is explained by the Lewis acid/base theory. The H-bond interactions among the NH3molecules and the edge groups (-OH) further improve the capture ability of the nanosheets.
History
Journal
Frontiers of physicsVolume
13Issue
4Article number
138101Pagination
138101-1 - 138101-6Publisher
SpringerLocation
Berlin, GermanyPublisher DOI
ISSN
2095-0462eISSN
2095-0470Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2018, Higher Education Press and Springer-Verlag GmbH Germany, part of Springer NatureUsage metrics
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γ-AlOOH nanosheetsNH3 adsorptionLewis acid\/base theoryH bonds interactionScience & TechnologyPhysical SciencesPhysics, MultidisciplinaryPhysicsgamma-AlOOH nanosheetsAMMONIA ADSORPTIONHYDROTHERMAL SYNTHESISSOLVOTHERMAL SYNTHESISREACTIVE ADSORPTIONENHANCED ADSORPTIONASSISTED SYNTHESISEFFICIENT REMOVALBOEHMITEGAMMA-AL2O3SURFACE
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