Extremely selective detection of ppb levels of indoor xylene using CoCr2O4 hollow spheres activated by Pt doping.


Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea. [Email] [Email]


Ultrahigh gas selectivity and response for ppb levels of xylene are achieved by doping Pt in CoCr2O4 hollow spheres, whereas the addition of Au or Pd is less effective or even deteriorated the performance.