High photocatalytic capability of self-assembled nanoporous WO3 with preferential orientation of (002) planes.
Self-assembled nanoporous tungsten oxide (WO3) with preferential orientation (002) planes was successfully synthesized on the tungsten sheet by anodization in a 0.2 wt % NaF and 0.3% (V/V) HF mixture solution in a 1:1 ratio. The pores, of a highly ordered self-assembled structure, had an average size of approximately 70 nm. X-ray diffraction identified a monoclinic WO3 structure and fine preferential orientation of (002) planes. A maximum photoconversion efficiency of 17.2% was obtained for the self-assembled nanoporous WO3 under high-pressure mercury lamp illumination. The photocatalytic (PC) degradation of pentachlorophenol (PCP) in aqueous solution using the self-assembled nanoporous WO3 photocatalyst, performed under both high-pressure mercury lamp and Xe lamp illumination, showed more excellent PC capability than WO3 film and TiO2 nanotube arrays.
Guo
Yafeng
Y
Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian116024, China.
Quan
Xie
X
Lu
Na
N
Zhao
Huimin
H
Chen
Shuo
S
D052918:Environmental Restoration and Remediation / Q000379:methods*; D049329:Nanostructures / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*; D010416:Pentachlorophenol / Q000737:chemistry; D010777:Photochemistry; D014414:Tungsten / Q000737:chemistry*; D014466:Ultraviolet Rays; D014978:Xenon / Q000737:chemistry
D010087:Oxides; D014978:Xenon; C511604:tungsten oxide; D010416:Pentachlorophenol; D014414:Tungsten