SnO2nanoparticles mixed with different amounts of gold nanoparticles(GNPs)were synthesized and their CO sensingproperties were investigated.The sol-gel method was employed to prepare the initial solution.SEM,TEM,XRD,D...SnO2nanoparticles mixed with different amounts of gold nanoparticles(GNPs)were synthesized and their CO sensingproperties were investigated.The sol-gel method was employed to prepare the initial solution.SEM,TEM,XRD,DLS andspectrophotometry were used to characterize the nanoparticles.The pure sensors showed a response of about4to12.8for(20-80)×10-6CO at operating temperature of340°C.The response and recovery time at50×10-6Co is about10and14s,respectively.The amount of GNPs optimized was used to create high performance GNP-SnO2sensors(m(Au)/m(Sn)=3.7663×10-4)and optimal operating temperature was about260°C and the response at concentrations of(20-80)×10-6was8.3to29.5,respectively.展开更多
文摘SnO2nanoparticles mixed with different amounts of gold nanoparticles(GNPs)were synthesized and their CO sensingproperties were investigated.The sol-gel method was employed to prepare the initial solution.SEM,TEM,XRD,DLS andspectrophotometry were used to characterize the nanoparticles.The pure sensors showed a response of about4to12.8for(20-80)×10-6CO at operating temperature of340°C.The response and recovery time at50×10-6Co is about10and14s,respectively.The amount of GNPs optimized was used to create high performance GNP-SnO2sensors(m(Au)/m(Sn)=3.7663×10-4)and optimal operating temperature was about260°C and the response at concentrations of(20-80)×10-6was8.3to29.5,respectively.
