Pt/TiO2表面状态对气敏特性的影响

doi:10.3724/SP.J.1077.2012.11695

无机材料学报 ›› 2012, Vol. 27 ›› Issue (9): 928-932.DOI: 10.3724/SP.J.1077.2012.11695

Pt/TiO₂表面状态对气敏特性的影响

张茂林¹, 袁战恒², 宋建平², 郑程²

(1. 西安电子科技大学技术物理学院, 西安710071; 2. 西安交通大学电信学院, 西安710049)

收稿日期:2011-11-08 修回日期:2012-01-07 出版日期:2012-09-20 网络出版日期:2012-08-28
作者简介:张茂林(1983–), 男, 博士, 讲师. E-mail: mlzhang@xidian.edu.cn
基金资助:
国家自然科学基金(61078020)

Influence of Surface States on Gas Response Properties of Pt/TiO₂

ZHANG Mao-Lin¹, YUAN Zhan-Heng², SONG Jian-Ping², ZHENG Cheng²

(1. School of Technical Physics, Xidian University, Xi’an 710071, China; 2. School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Received:2011-11-08 Revised:2012-01-07 Published:2012-09-20 Online:2012-08-28
About author:ZHANG Mao-Lin. E-mail: mlzhang@xidian.edu.cn
Supported by:
National Natural Science Foundation of China(61078020)

摘要/Abstract

摘要： 通过浸渍法用H₂PtCl₆溶液修饰TiO₂厚膜, 经过不同的处理工艺, 获得表面负载Pt粒子的Pt/TiO₂厚膜. 采用XRD和SEM分析了Pt/TiO₂的物相结构和表面形貌, 并通过电阻-氧分压关系计算Pt/TiO₂厚膜活化能. 然后分别通过静态和动态测试法, 表征了Pt/TiO₂厚膜在H₂/O₂中的稳态阻值和动态响应时间. 结果表明: 受“spill-over”机制影响, Pt/TiO₂厚膜在H₂/O₂气氛下的稳态电阻与Pt的散布状态有关. 而样品响应时间不仅与Pt粒子的分布有关, 还受表面活化能的影响, 在Pt散布基本相同情况下, 活化能越低, 样品响应速度越快.

关键词: 二氧化钛, 表面状态, 稳态电阻, 响应时间

Abstract: Pt/TiO₂ thick film gas sensors were modified by dipping method in H₂PtCl₆ contained solution. In order to get different Pt/TiO₂surface states, the thick films were treated with different process. Microstructural and morphological characteristics were investigated by XRD and SEM. The resistance-oxygen partial pressure relationship was used to calculate activation energy (E) of this film. Steady-state resistance and dynamic response of the sensor exposed to H₂/O₂ were tested, separately. The results indicated that the steady-state resistance which affected by “spill-over” effect arose from the Pt distribution states. However, the response time was associated with the activation energy (E). Sensors with lower activation energy exhibited a faster rate of response when the magnitude of response was approximately uniform.

Key words: TiO₂, surface state, steady-state resistance, response time

中图分类号:

TQ174

张茂林, 袁战恒, 宋建平, 郑程. Pt/TiO₂表面状态对气敏特性的影响[J]. 无机材料学报, 2012, 27(9): 928-932.

ZHANG Mao-Lin, YUAN Zhan-Heng, SONG Jian-Ping, ZHENG Che. Influence of Surface States on Gas Response Properties of Pt/TiO₂[J]. Journal of Inorganic Materials, 2012, 27(9): 928-932.

参考文献

[1] Gao L, Li Q, Song Z, et al. Preparation of nano-scale titania thick film and its oxygen sensitivity. Sens. Actuators B, 2000, 71(3): 179-183.

[2] ZHANG Qing-Hong, GAO Lian, GUO Jing-Kun. Effects of sulfate ions and hydrolytic temperature on the properties of TiCl4-derived nanostructured TiO2. Journal of Inorganic Ma-terials, 2000, 15(6): 992-998.

[3] Ralf Moos, Noriya Izu, Frank Rettig, et al. Resistive oxygen gas sensors for harsh environments. Sensors, 2011, 11(4): 3439-3465.

[4] Zhang MaoLin, Yuan Zhanheng, Zheng Cheng. Fast response of undoped and Li-doped titania thick-films at low temperature. Sens. Actuators B, 2008, 131(2): 680-686.

[5] TAI Hui-Ling, JIANG Ya-Dong, XIE Guang-Zhong, et al. Fabrication and gas sensitivity study of polypyrrole/titanium oxide composite thin films. Journal of Inorganic Materials, 2007, 22(3): 524-528.

[6] LI Xiao-Bin, LU Xiao-Hua. Microwave heating preparation of Ag modified TiO2 for photocatalytic degradation of gaseous toluene. Journal of Inorganic Materials, 2010, 25(4): 365-369.

[7] Carney CM, Yoo S, Akbar S A. TiO2-SnO2 nanostructures and their H2 sensing behavior. Sens. Actuators B, 2005, 108(1/2): 29-33.

[8] Khorami H A, Keyanpour-Rad M, Vaezi M R. Synthesis of SnO2/ZnO composite nanofibers by electrospinning method and study of its ethanol sensing properties. Appl. Surf. Sci., 2011. 257(18): 7988-7922.

[9] Trimboli J, Dutta P K. Oxidation chemistry and electrical activity of Pt on titania: development of a novel zeolite-filter hydrocarbon sensor. Sens. Actuators B, 2004, 102(1): 132-141.

[10] Francioso L, Presicce D S, Siciliano P, et al. Combustion conditions discrimination properties of Pt-doped TiO2 thin film oxygen sensor. Sens. Actuators B, 2007, 123(1): 516-521.

[11] Zhang Maolin, Yuan Zhanheng, Song Jianping, et al. Response improvement for In2O3-TiO2 thick film gas sensors. Current Applied Physics, 2012, 12(3): 678-683.

[12] Yamazoe N. New Approaches for improving semiconductor gas sensors. Sens. Actuators B, 1991, 5(1-4): 7-19.

[13] Moselay P T, Material selection for semiconductor gas sensors, Sens. Actuators B, 1992, 6(1/2/3): 149-156.

[14] Xu Yu-Long, Zhou Xiao-Hua, Sorensen Toft O. Oxygen sensor based on semiconducting metal oxides: an overview. Sens. Actuators B, 2000, 65(1/2/3): 2-4.

[15] ZHOU Zhi-Gang, TANG Zi-Long. Point defects and applications of chemical sensors ceramics. Journal of Inorganic Materials, 2009, 24(4): 650-660.

[16] Yamazoe N, Sakai G, Shimanoe K. Oxide semiconductor gas sensors. Catal. Surv. Asia, 2003, 7(1): 63-75.

Pt/TiO₂表面状态对气敏特性的影响

Influence of Surface States on Gas Response Properties of Pt/TiO₂

RichHTML

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	薛虹云, 王聪宇, MAHMOOD Asad, 于佳君, 王焱, 谢晓峰, 孙静. 二维g-C₃N₄与Ag-TiO₂复合光催化剂降解气态乙醛抗失活研究[J]. 无机材料学报, 2022, 37(8): 865-872.
[2]	迟聪聪, 屈盼盼, 任超男, 许馨, 白飞飞, 张丹洁. SiO₂@Ag@SiO₂@TiO₂核壳结构的制备及其光催化降解性能[J]. 无机材料学报, 2022, 37(7): 750-756.
[3]	潘碧宸,任鹏禾,周特军,蔡圳阳,赵小军,周宏明,肖来荣. 树脂基复合材料表面隔热涂层的组织与性能研究[J]. 无机材料学报, 2020, 35(8): 947-952.
[4]	朱本必,张旺,张志坚,章建忠,IMRAN Zada,张荻. 光热增强光催化性能二氧化钛(B)/玻纤布复合研究[J]. 无机材料学报, 2019, 34(9): 961-966.
[5]	李远洋,江波. 具有超亲水光催化性能的λ/4-λ/2型两层宽频增透膜的制备和性能研究[J]. 无机材料学报, 2019, 34(2): 159-163.
[6]	苏琨, 张亚茹, 陆飞, 张君, 王熙. 铂修饰二氧化钛纳米片的制备及其光电催化析氢反应研究[J]. 无机材料学报, 2019, 34(11): 1200-1204.
[7]	盛鹏, 赵广耀, 徐丽, 刘双宇, 王博, 刘海镇, 马光, 韩钰, 陈新. 铝沉积还原制备蓝色二氧化钛[J]. 无机材料学报, 2018, 33(9): 942-948.
[8]	范闻, 武利民. 硅油两步脱水法可控制备纳米二氧化钛透镜[J]. 无机材料学报, 2018, 33(12): 1337-1342.
[9]	林景诚, 唐笑, 楚婉怡. 液相合成超小TiO₂纳米簇及其光催化性质[J]. 无机材料学报, 2017, 32(8): 863-869.
[10]	鲍艳, 康巧玲. 中空TiO₂微球的制备及其对聚丙烯酸酯薄膜保温性能的影响[J]. 无机材料学报, 2017, 32(6): 581-586.
[11]	李翠霞, 金海泽, 杨志忠, 杨轩, 董其铮, 厉婷婷. 介孔RGO/TiO₂复合光催化材料的制备及光催化性能[J]. 无机材料学报, 2017, 32(4): 357-364.
[12]	喻洋, 佟明兴, 何玉兰, 陈辉, 高静, 李国华. 介孔TiO₂/WO₃空心球的制备及其可见光光催化性能[J]. 无机材料学报, 2017, 32(4): 365-371.
[13]	马雅婷, 李巧玲. TiO₂/Co₃O₄复合纳米颗粒的制备及其光催化制氢性能[J]. 无机材料学报, 2016, 31(8): 841-844.
[14]	王慧蕾, 刘孝恒. 银粒子修饰下的介孔二氧化钛的制备及其光催化性能的研究[J]. 无机材料学报, 2016, 31(5): 555-560.
[15]	沈忠, 钟近艺, 赵渊中, 崔燕, 陈立坤, 郑禾. 模拟太阳光下锗掺杂纳米TiO₂对化学毒剂的降解性能[J]. 无机材料学报, 2016, 31(4): 427-433.