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One‐Step Plasma Synthesis of Nb 2 O 5 Nanofibers and their Enhanced Photocatalytic activity
Author(s) -
Kajita Shin,
Mimuro Fumiaki,
Yoshida Tomoko,
Ohno Noriyasu,
Yoshida Naoaki
Publication year - 2018
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201800769
Subject(s) - materials science , photocatalysis , x ray photoelectron spectroscopy , scanning electron microscope , transmission electron microscopy , analytical chemistry (journal) , niobium , fluence , nanotechnology , chemical engineering , ion , chemistry , biochemistry , organic chemistry , chromatography , engineering , metallurgy , composite material , catalysis
Fiberform nanostructured niobium (Nb) was fabricated by one step helium (He) plasma irradiation. He ion implantation formed He nano‐bubbles on a Nb plate and led to formation of protrusions while migrating in Nb matrix; fiberform nanostructures (FN) were grown when the fluence became high (>10 26 m −2 ). The necessary conditions for the formation of Nb FN were revealed to be the surface temperature range of 900–1100 K and the incident ion energy higher than 70 eV. The sample was oxidized at 573–773 K in an air atmosphere, and Pt nanoparticles were photo‐deposited on the Nb 2 O 5 samples. The surface was analyzed by scanning electron microscope, transmission electron microscope, x‐ray photoelectron spectroscopy, and ultraviolet‐visible spectrophotometry. Photocatalytic activity of the fabricated materials was studied using methylene blue (MB) decolorization process. An enhanced photocatalytic performance was identified on FN Nb 2 O 5 substrate with Pt deposition.