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Zirconium dioxide (ZrO 2), sometimes known as zirconia (not to be confused with zirconium silicate or zircon), is a white crystalline oxide of zirconium. Its most naturally occurring form, with a monoclinic crystalline structure, is the mineral baddeleyite.
Yttria-stabilized zirconia (YSZ) is a ceramic in which the cubic crystal structure of zirconium dioxide is made stable at room temperature by an addition of yttrium oxide. These oxides are commonly called "zirconia" (Zr O 2) and "yttria" (Y 2 O 3), hence the name.
16 Απρ 2020 · Zirconium oxide (ZrO 2) also known as zirconia with its excellent chemical and physical properties have applications such as fuel cells [1], gas sensors [2], optoelectronics [3], catalyst [4], and corrosion resistant material [5].
Afterward, gold NPs were deposited on ZrO 2 nanofibers via an electron beam evaporator. The prepared sensor shows excellent selectivity to organophosphates even in the presence of multiple pesticides.
27 Οκτ 2021 · The electronic structures and optical properties of the monoclinic ZrO2 (m-ZrO2) are investigated by means of first-principles local d. approxn. (LDA) + U approach. Without on-site Coulomb interactions, the band gap of m-ZrO2 is 3.60 eV, much lower than the exptl. value (5.8 eV).
ZrO2 is Baddeleyite structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Zr4+ is bonded to seven O2- atoms to form a mixture of distorted corner and edge-sharing ZrO7 pentagonal bipyramids. There are a spread of Zr–O bond distances ranging from 2.07–2.31 Å.
15 Απρ 2018 · ZrO 2 is an n-type semiconductor with bandgap of ~5 eV and shows a very good photocatalytic performance under UV light irradiation [6]. The photogenerated charge carriers have high redox ability due to its wide band gap property.
