Facile synthesis of Ni-doped SnO_(2) nanorods and their high gas sensitivity to isopropanol  

作　　者：Yanqiu YU Shantang LIU 

机构地区：[1]Key Laboratory for Green Chemical Process(Ministry of Education),School of Chemistry and Environmental Engineering,Wuhan Institute of Technology,Wuhan 430073,China

出　　处：《Frontiers of Materials Science》2022年第1期87-97,共11页材料学前沿（英文版）

基　　金：This work was supported by the 12th Graduate Innovative Fund of Wuhan Institute of Technology(Grant No.CX2020269)。

摘　　要：In this work,pure SnO_(2) and Ni-doped SnO_(2) nanorods were synthesized through a one-step template-free hydrothermal method and then used to detect isopropanol.Sensors fabricated with the Ni-doped SnO_(2) nanocomposites showed the best gas sensing performance when the Ni doping amount was 1.5 mol.%.The response reached 250 at 225℃,which was approximately 8.3 times higher than that of the pure SnO_(2) nanorods.The limit of detection for isopropanol was as low as 10 ppb at the optimum working temperature.In addition,it also displayed good selectivity and excellent reproducibility.It is believed that the enhanced isopropanol sensing behavior benefit from the increased oxygen defects and larger specific surface area by Ni doping.

关 键 词：template-free hydrothermal method ISOPROPANOL gas sensor Ni doping low detection limit 

分 类 号：TB383[一般工业技术—材料科学与工程]