LaMnO_(3)/Co_(3)O_(4) nanocomposite for enhanced triethylamine sensing properties  

作　　者：Jian Zhang Yanping Chen Ling Li Xue Chen Wenya An Xiujuan Qian Yuye Tao 

机构地区：[1]School of Science,Shandong Jianzhu University,Jinan,250100,China

出　　处：《Journal of Rare Earths》2024年第4期733-742,共10页稀土学报（英文版）

基　　金：Project supported by the Shandong Natural Science Foundation(ZR2019BF030,ZR2019BEM036)。

摘　　要：LaMnO_(3) modified Co_(3)O_(4) nanocomposites were prepared by simple hydrothermal method co mbined with sol-gel method.The gas sensitivity properties of pure Co_(3)O_(4) and LaMnO_(3)/Co_(3)O_(4) with different composite proportions are compared.It is found that 0.6-LMO/Co_(3)O_(4) sensor has higher sensitivity to triethylamine(TEA)than pure Co_(3)O_(4) sensor,which is improved by 9.27 times.And the working temperature is reduced from 150 to 130℃.Besides,it has excellent gas selectivity and repeatability.The improvement of the gas sensitivity of LaMnO_(3)/Co_(3)O_(4) sensor may be due to the fact that LaMnO_(3) is an effective catalyst,and the catalytic performance perhaps is beneficial to improving the sensing performance.In addition,the formation of p-p heterojunctions may be the key factor to improve the gas sensing performance.This work provides a new Co_(3)O_(4)-based gas sensing material for the detection of TEA.

关 键 词：Gas sensing Co_(3)O_(4) LaMnO_(3) TRIETHYLAMINE RAREEARTHS 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB332[自动化与计算机技术—控制科学与工程]