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. 2017 Nov 18;8(11):333. doi: 10.3390/mi8110333

Table 5.

Summary of typical advances on light-activated gas sensor based on metal oxides with doping.

Material Light Illumination Temperature Vapor Ref
Nb5+-doped SrTiO3 UV RT O2 [96]
Fe3+-doped SrTiO3 UV RT O2 [96]
Cr3+-doped SrTiO3 UV RT O2 [96]
Ga-doped ZnO nanopowder UV various temperatures CO [97]
Ga-doped ZnO nanocrystal 460 nm visible light temperatures ranging from 25 °C to 100 °C H2, NO2 [98]
Fe-doped ZnO flowers 532 nm light RT HCHO [99]
Fe-doped ZnO flowers 532 nm light RT HCHO [100]
carbon-doped ZnO microspheres UV RT ethanol [101]