Sub-ppm electrical detection of hydrogen sulfide gas at room temperature based on printed copper acetate-gold nanoparticle composite filmsElectronic supplementary information (ESI) available: X-ray diffraction data, atomic force microscopy images before and after plasma treatment of CuAc film, the printing of interdigitated gold electrodes with AuNP between the fingers and materials and methods. See DOI: 10.1039/c4ra17256f

This paper presents the sub-ppm level electrical detection of H 2 S gas at room temperature using printed copper acetate-gold nanoparticle composite films. The excellent sensitivity of these films towards H 2 S can be attributed to the catalytic activity of gold nanoparticles in combination with the plasma oxidation of copper acetate films. This paper presents the sub-ppm level electrical detection of H 2 S gas at room temperature using printed copper acetate-gold nanoparticle composite films either on (A) silver or (B) gold/AuNP electrodes.