EDTA-mediated shape-selective synthesis of Bi2WO6 hierarchical self-assemblies with high visible-light-driven photocatalytic activities
- 7 October 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in CrystEngComm
- Vol. 13 (24), 7267-7275
- https://doi.org/10.1039/c1ce05671a
Abstract
Bi2WO6 with multilayered disc-like and 3D hierarchical nest-like architectures self-assembled from 2D nanosheets were successfully synthesized by a hydrothermal method in EDTA-mediated processes. It was found that the morphology modulation of the as-obtained products could be easily realized simply by changing the amount of EDTA introduced into the reaction system. The stepwise self-assembly formation mechanisms for two different hierarchical architectures were proposed on the basis of a series of time-dependent experiments. The photocatalytic activities of the different Bi2WO6 samples for the degradation of Rhodamine B (RhB) were also evaluated. Due to the unique morphology, porous structure and large surface area, Bi2WO6 nest-like architectures exhibited better activity performance than Bi2WO6 multilayered microdiscs. The present work not only presents an efficient way for the selectively controllable preparation of Bi2WO6 hierarchical structures viaself-assembly from 2D nanosheets, but also provides a step forward in the design of photocatalysts with controllable morphology and enhanced photocatalytic activities.Keywords
This publication has 60 references indexed in Scilit:
- EDTA-mediated hydrothermal synthesis of NaEu(MoO4)2 microrugbies with tunable size and enhanced luminescence propertiesCrystEngComm, 2011
- Self-Assembly and Enhanced Photocatalytic Properties of BiOI Hollow Microspheres via a Reactable Ionic LiquidLangmuir, 2010
- Down- and up-conversion photoluminescence, cathodoluminescence and paramagnetic properties of NaGdF4 : Yb3+,Er3+ submicron disks assembled from primary nanocrystalsJournal of Materials Chemistry, 2010
- Construction of Unconventional Hexapod-like Tellurium Nanostructure with Morphology-Dependent Photoluminescence PropertyThe Journal of Physical Chemistry C, 2009
- Heterogeneous photocatalyst materials for water splittingChemical Society Reviews, 2008
- Template‐Free Fabrication and Enhanced Photocatalytic Activity of Hierarchical Macro‐/Mesoporous TitaniaAdvanced Functional Materials, 2007
- Chemistry and Properties of Nanocrystals of Different ShapesChemical Reviews, 2005
- Hierarchical Two‐ and Three‐Dimensional Microstructures Composed of Rare‐Earth Compound NanotubesAdvanced Materials, 2004
- Self-Assembly of Mesoscopic Metal-Polymer AmphiphilesScience, 2004
- Hydrogen Sensors and Switches from Electrodeposited Palladium Mesowire ArraysScience, 2001