info:eu-repo/semantics/conferenceProceedings
MS-1-P-2892 Microstructure Study of W1-xMox O3 0.33H2O for Tunable Wavelength Absorption
Autor
ALEJANDRO ARZOLA RUBIO
WILBER ANTUNEZ FLORES
VIRGINIA HIDALINA COLLINS MARTINEZ
FRANCISCO PARAGUAY DELGADO
Resumen
Hydrated tungsten oxide WO3 0.33H2O has been studied extensively due to its electronic and
optoelectronic properties, it has has an enormous potential application ranging from
condensed-matter physics to solid-state chemistry [1], such as photo-electrochemical energy
conversion, gas sensors, photocatalysis, lithium-ion batteries, solar cells [2]. Tremendous effort
has been dedicated to the synthesis, solid solution mechanism and property investigation of
W1-xMox O3 0.33H2O over the past years. This material showed improved electrochromic, gas
sensing, catalytic, lithium ion transport, and photocatalytic properties [3] when compared with
their single oxide WO3 and MoO3. Recently, Zhou et al. were capable of modulate the band
gaps of the W1-xMox O3 0.33H2O materials with different Mo/W ratio values [4]. We synthesized a
series of W1-xMoxO3 0.33H2O nano/microstructures with controlled stoichiometry (x = 0, 0.25,
0.50, 0.75). With gradual increase of Mo content, we narrowed the band gap from 2.61 to 2.10
eV. This result is better than Zhou et al. but in our case, we use friendly to the environment
chemical precursors such as ammonium heptamolybdate and ammonium metatungstate
instead of metal powders.
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