Effect of $M_2CO_3$(M=Li, K) Addition on the Humidity Sensitivity of $V_2O_5$-doped $TiO_2$

$V_2O_5$를 dopant로 한 $TiO_2$의 감습(感濕)에 미치는 $M_2CO_3$(M=Li, K)의 영향(影響)

In this paper, the effect of alkaline oxides on the humidity sensitivity of $V_2O_5$(2mol%)-doped $TiO_2$(98mol%) was investigated as functions of $Li_2CO_3$, $K_2CO_3$, additives (x= 0.0 mol%, 1mol%, 2mol%, 5mol%, 10mol%). 1. The porosity and total intrusion volume of sample containing 1, 2, 5mol% $K_2O$ was increased, and then those of 10mol% $K_2O$ was reduced again. 2. The humidity sensitivity of samples containing 1, 2, 5, 10mol% $K_2O$ were good generally. Especially the sample containing 5mol% $K_2O$ were the better. 3. the stability of the humidity sensitivity of samples containing $K_2O$ at low and high temperatures is very good.