title: 2D single- or double-layered vanadium oxide nanosheet assembled 3D microflowers: controlled synthesis, growth mechanism, and applications.
abstract: A facile one-pot solvent-thermal method was developed to synthesize a unique 3D microflower structure assembled from single- or double-layered 2D nanosheets of V4O9 (F-VO). Simply by controlling the precursor concentration, yolk-shelled V4O9 (YS-VO) or bulk V4O9 (B-VO) can be produced instead. The precursor-concentration dependent growth mechanism is proposed. The exceptional catalytic/electrochemical properties and large specific surface area of F-VO promise a wide range of applications. As a proof-of-concept demonstration, we investigate its use in high-performance supercapacitors (~392 F g(-1)), and for sensitive detection of H2O2 (with a low detection limit of ~0.1 μM) and methanol (with a low detection limit of ~60 μM). Furthermore, we show that F-VO greatly outperforms its counterparts (YS-VO and B-VO) presumably owing to its unique structure and crystal plane orientation.
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore.
authors.forename: Hongchang
authors.initials: H
authors.lastname: Pang
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Dong
authors.forename: Siong Luong
authors.initials: SL
authors.lastname: Ting
authors.forename: Jinlin
authors.initials: J
authors.lastname: Lu
authors.forename: Chang Ming
authors.initials: CM
authors.lastname: Li
authors.forename: Dong-Hwan
authors.initials: DH
authors.lastname: Kim
authors.forename: Peng
authors.initials: P
authors.lastname: Chen