Layered Perovskite Nanofibers via Electrospinning for Overall Water Splitting
Abstract
The (111)-layered perovskite materials Ba5Ta4O15, Ba5Ta2Nb2O15 and Ba5Nb4O15 are prepared with nanofiber morphology via electrospinning for the first time. The nanofibers are built up from small single crystals, with up to several micrometers length even after calcination. The formation mechanism is investigated in detail, revealing an intermediate formation of amorphous barium carbonate strengthening the nanofiber morphology for high temperature treatment. All nanofiber compounds are able to generate hydrogen without any co-catalyst in photocatalytic reformation of methanol. After photodeposition of Rh-Cr2O3 co-catalysts, the nanofibers show better activity in overall water splitting compared to sol–gel-derived powders.Keywords
This publication has 38 references indexed in Scilit:
- Identifying champion nanostructures for solar water-splittingNature Materials, 2013
- Photocatalytic Hydrogen Production from Water Using N-Doped Ba5Ta4O15 under Solar IrradiationThe Journal of Physical Chemistry C, 2011
- Lithium niobate nanowires for photocatalytic water splittingDalton Transactions, 2011
- Formation of Inorganic Nanofibers from Preformed TiO2 Nanoparticles via ElectrospinningThe Journal of Physical Chemistry C, 2010
- Highly Efficient LaCoO 3 Nanofibers Catalysts for Photocatalytic Degradation of Rhodamine BJournal of the American Ceramic Society, 2010
- Electrospinning of Nanofibers: Reinventing the Wheel?Advanced Materials, 2004
- Far-infrared reflectivity and Raman spectra ofPhysical Review B, 1996
- Light-Induced Redox Reactions in Nanocrystalline SystemsChemical Reviews, 1995
- Electrochemical Photolysis of Water at a Semiconductor ElectrodeNature, 1972
- Oxygen Evolution on Semiconducting TiO[sub 2]Journal of the Electrochemical Society, 1968