利用离子交换法制备了WO3的Sol溶液,并应用于H+选择性电极的敏感膜.电极有良好的H+响应,响应pH值范围为2～11,响应灵敏度约为52mV/pH.本文利用TG、DSC、IR、SEM、AFM、XRD等分析手段对WO3膜的组成与形态进行了表征,WO3形貌为龟裂泥土状,膜的组成为WO3、WO3·H2O或WO3·0.33H2O,随着热处理温度的提高,结晶水减少.EIS图谱表明电极的H+响应动力学过程为H+扩散过程控制,H+扩散系数为10-10cm2·S数量级.
参考文献
| [1] | Pasztor K;Sekiguchi A;Shimo N et al.Electro- chemicllydeposited RuO2 films as PH Sensors[J].Sensors and Actuators,1993,13-14:561-562. |
| [2] | Kenneth G Krerder;Michael J Tarlor;James P Cline .sputtered thin-film PH electrocles of platinum,palladiun,rutheniun,and iridiun oxides[J].Sensors and Actuators B-Chemical,1995,28:167-172. |
| [3] | Shuk P.;Greenblatt M.;Ramanujachary KV. .NEW METAL-OXIDE-TYPE PH SENSORS[J].Solid state ionics,1996(2):1115-1120. |
| [4] | 肖凤英,徐金瑞.多束圆盘式钨/氧化钨微型pH传感器研制[J].华侨大学学报(自然科学版),2001(02):158-160. |
| [5] | Michal J Natan;Thomas E Mallouk;Mark S Wrighton .pH-sensitive WO3-based Micro- electrochemical Transistors[J].Journal of Physical Chemistry,1987,91:648-654. |
| [6] | Livage J.;Guzman G. .AQUEOUS PRECURSORS FOR ELECTROCHROMIC TUNGSTEN OXIDE HYDRATES[J].Solid state ionics,1996(3/4):205-211. |
| [7] | 张静蓉,陈铮,杨长生,戴基智.溶胶-凝胶法制备钨电致变色膜[J].功能材料,2000(04):385-387. |
| [8] | Lee D S;Han S D;Huh J S et al.Nitrogen oxides-sensing characterstics of WO3-based nanocrystalline thick film gas sensor[J].Sensors and Actuators B:Chemical,1999,60:57-63. |
| [9] | Yong-Gyu Choi;Go Sakai;Kengo Shimanoe;Norio Miura;Noboru Yamazoe .Preparation of aqueous sols of tungsten oxide dihydrate from sodium tungstate by an ion-exchange method[J].Sensors and Actuators, B. Chemical,2002(11):63-72. |
| [10] | 曹楚南;张鉴清.交流阻抗图谱导论[M].北京:科学出版社,2001 |
| [11] | 刘永辉.电化学测试技术[M].北京:北京航空学院出版社,1987 |
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