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Photocatalytic degradation of antibacterials using BixOyXz with optimized morphologies and adjusted structures-A review

Release time:2021-03-15  Hits:

  • Key Words:Oxygen reduction reaction; Catalyst; Perovskite oxide; Hollow sphere
  • Abstract:A hollow spherical La0.8Sr0.2MnO3 (HS-LSM) perovskite oxide has been prepared using a new carbonate-template route, and characterized by XRD, SEM and TEM. SEM and TEM results show that the preprepared oxides consist of porous microspheres composed of submicrometer-sized subunits with a secondary particle diameter of similar to 20-50 nm. The catalytic activity of the oxide for the oxygen reduction reaction (ORR) in 0.1 M KOH solution has been studied using a rotating ring-disk electrode (RRDE). In the ORR tests, a maximum cathodic current density of 6.4 mA cm(-2) at -0.9 V (vs. Ag/AgCl) with 2500 rpm has been obtained, and the ORR mainly favors a direct four-electron pathway. The chronoamperometric test shows that the HS-LSM exhibits excellent stability for the ORR. (C) 2014 Elsevier B.V. All rights reserved.
  • Volume:271
  • Translation or Not:no
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