Recommanded Product: 78-50-2. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Tri-n-octylphosphine Oxide, is researched, Molecular C24H51OP, CAS is 78-50-2, about Reversible sensing of nitrogen dioxide using photoluminescent CdSe/ZnS quantum dots and enhanced response by combination with noble metals. Author is Ando, Masanori; Inagaki, Kosuke; Kawasaki, Hideya; Shigeri, Yasushi.
We report here a novel, sensitive detection method for nitrogen dioxide (NO2) using thin films of CdSe/ZnS core-shell type quantum dots (QDs) with and without noble metal (NM) nanoparticles (Au, Pt, or Pt-Pd alloy) deposited on a glass substrate. The photoluminescence (PL) intensity of the QD-only film and NM-QD composite films with porous microstructure rapidly decreased on exposure to NO2 (1-100 ppm) in air, and it reversibly recovered after the atm. was changed back to air without NO2. Interestingly, the Au-QD, Pt-QD, and Pt-Pd-QD films showed higher sensitivity when compared with the QD-only film. The reversible responses of QD-only film, Au-QD film, Pt-QD film, and Pt-Pd-QD film to NO2 in air suggested that the CdSe/ZnS QD film and NM-QD films could be promising PL-based optical NO2 sensors. Furthermore, the high NO2 sensitivity, but low ozone sensitivity, in the Pt-Pd-QD film suggests the possibility of recognizing these two oxidizing gases by using the gas-selective catalytic activity of Pd.
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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method