Title :
Electrical Conductivity and Ammonia Sensing Characteristics of Nanocrystalline Silver Molybdates Synthesized by Solution Chemistry Route
Author :
Misra, Sunasira ; Jayaraman, V. ; Gnanasekaran, T.
Author_Institution :
Dept. of Chem., C.V. Raman Coll. of Eng., Bhubaneswar, India
Abstract :
A soft chemical method has been developed for the synthesis of nano-crystalline powders of silver molybdates including Ag6Mo10O33 and Ag2Mo2O7. Electrical conductivity, silver ion transport number and gas sensing characteristics of Ag6Mo10O33 were measured. This compound was found to sense selectively ammonia at 503 K. Above 503 K, it has significant cross sensitivity to petroleum gas (PG). Ag2Mo2O7 showed sensitivity of about 46 % towards 100 vppm of ammonia at 623 K whose detailed results are reported in this paper.
Keywords :
ammonia; electrical conductivity; gas sensors; nanofabrication; nanoparticles; nanosensors; silver compounds; Ag2Mo10O33; Ag2Mo2O7; NH3; ammonia sensing characteristics; electrical conductivity; gas sensing characteristics; nanocrystalline powder synthesis; nanocrystalline silver molybdate; petroleum gas; silver ion transport number; soft chemical method; solution chemistry route; temperature 503 K; Chemicals; Conductivity; Ions; Sensitivity; Silver; Temperature sensors;
Conference_Titel :
Nanoscience, Technology and Societal Implications (NSTSI), 2011 International Conference on
Conference_Location :
Bhubaneswar
Print_ISBN :
978-1-4577-2035-2
DOI :
10.1109/NSTSI.2011.6111791
