A Novel Fabricating Process of Catalytic Gas Sensor Based on Droplet Generating Technology
A Novel Fabricating Process of Catalytic Gas Sensor Based on Droplet Generating Technology
复制标题
基于液滴生成技术的催化气体传感器制备新工艺
DOI：
10.3390/mi10010071
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发表时间：
2019-01
期刊：
影响因子：
3.4
通讯作者：
Zhang Linan
中科院分区：
文献类型：
--
作者：
WuLiqun;Zhang Ting;Wang Hongcheng;Tang Chengxin;Zhang Linan
催化气体传感器广泛用于测量可燃气体的浓度，以防止工业和家庭环境中的爆炸事故。该传感器敏感元件的典型结构由载体和催化剂材料组成，它们位于铂线圈内和周围。然而，铂线圈的尺寸是微米级的，并且通常具有圆柱形形状。控制载体和催化剂材料的量以及填充线圈的内腔是极其困难的，这增加了传感器性能的不可再现性和不确定性。为了解决这一问题，本文提出了一种新的方法，使用按需滴液发生器添加载体和催化材料到铂线圈和微球的制作。本文所用的材料包括细分散的Al_2O_3悬浮液和铂钯（Pd-Pt）催化剂。通过控制悬浮液滴的数量可以控制具有载体材料的微丸的尺寸，而通过控制催化剂滴的数量可以控制Pd-Pt催化剂的量。采用桥式电路获得气敏传感器的输出信号。在140 mV和80 mV下的微丸电阻器的原始信号在老化处理后保持不变。该器件的灵敏度为32 mV/% CH_4，功耗为120 mW。
Catalytic gas sensors are widely used for measuring concentrations of combustible gases to prevent explosive accidents in industrial and domestic environments. The typical structure of the sensitive element of the sensor consists of carrier and catalyst materials, which are in and around a platinum coil. However, the size of the platinum coil is micron-grade and typically has a cylindrical shape. It is extremely difficult to control the amount of carrier and catalyst materials and to fulfill the inner cavity of the coil, which adds to the irreproducibility and uncertainty of the sensor performance. To solve this problem, this paper presents a new method which uses a drop-on-demand droplet generator to add the carrier and catalytic materials into the platinum coil and fabricate the micropellistor. The materials in this article include finely dispersed Al2O3 suspension and platinum palladium (Pd-Pt) catalyst. The size of the micropellistor with carrier material can be controlled by the number of the suspension droplets, while the amount of Pd-Pt catalyst can be controlled by the number of catalyst droplets. A bridge circuit is used to obtain the output signal of the gas sensors. The original signals of the micropellistor at 140 mV and 80 mV remain after aging treatment. The sensitivity and power consumption of the pellistor are 32 mV/% CH4 and 120 mW, respectively.
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DOI：
10.3390/s141120372
发表时间：
2014-10-29
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Brauns E;Morsbach E;Kunz S;Baeumer M;Lang W
通讯作者：
Lang W
影响因子：
8.4
作者：
Ma, Hongyu;Qin, Shunli;Ding, Enjie
通讯作者：
Ding, Enjie
影响因子：
2.8
作者：
S. Minov;F. Cointault;J. Vangeyte;J. Pieters;D. Nuyttens
通讯作者：
S. Minov;F. Cointault;J. Vangeyte;J. Pieters;D. Nuyttens
影响因子：
64.8
作者：
F. J. Weinberg
通讯作者：
F. J. Weinberg
影响因子：
2.4
作者：
I. Bársony;M. Ádám;P. Fürjes;R. Lucklum;M. Hirschfelder;S. Kulinyi;C. Dücso
通讯作者：
I. Bársony;M. Ádám;P. Fürjes;R. Lucklum;M. Hirschfelder;S. Kulinyi;C. Dücso