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A Dissolution‐Regeneration Route to Synthesize Blue Tungsten Oxide Flowers and their Applications in Photocatalysis and Gas Sensing
Author(s) -
Song XiangNing,
Wang ChuYa,
Wang WeiKang,
Zhang Xing,
Hou NanNan,
Yu HanQing
Publication year - 2016
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201500417
Subject(s) - nanoflower , materials science , photocatalysis , dissolution , tungsten , nanostructure , oxide , chemical engineering , solvent , selectivity , nanotechnology , morphology (biology) , acetone , organic chemistry , catalysis , chemistry , biology , metallurgy , genetics , engineering
Tungsten oxide (WO 3 ) has unique physicochemical properties. Although various synthetic methods have been proposed to fabricate tungsten oxide with different morphologies, methods of tailoring the tungsten oxide nanostructure toward new morphologies are still needed. In this work, a self‐assembled WO 3 ·0.33H 2 O nanoflower is synthesized using a dissolution and regeneration method. In such a two‐step synthetic process, temperature, solvent, and reaction times are found to be the main parameters affecting the morphology of WO 3 ·0.33H 2 O. The synthesized WO 3 ·0.33H 2 O nanoflower exhibits a localized surface plasmon resonance effect and a high photocatalytic activity, which can be explained by the doping of W 5+ and its morphology. Furthermore, this WO 3 ·0.33H 2 O nanoflower can also be used as a gas sensor and has good selectivity and linearity towards acetone vapor in the range of 50–500 ppm.