NANOCRYSTALLINE DOPED CE02 NOX-SENSOR FOR HIGH TEMPERATURE APPLICATIONS

摘要

A gas sensor and a method for manufacturing said sensor that utilizes nano-sized CeOSUB2 /SUBand doped CeOSUB2/SUB particles for detecting NO, NOSUB2/SUB and is also used for studying the cross sensitivity of oxygen, un-burnt hydrocarbons, CO and COSUB2/SUB. Nano-crystalline powders of CeOSUB2/SUB and doped CeOSUB2 /SUBare employed to configure thin films on Platinum comb type electrodes preformed on alumina substrates. Various catalytic oxides are employed to convert the NO to NOSUB2/SUB to get equal response to NOx gas. Gas sensing properties are measured using a dynamic chamber with a constant flow of air and NOX gas in required percentage in nitrogen gas.