Younes Hammad, Jelbuldina Madina, Tizani Lina, Marbou Khalid, Al Ghaferi Amal, Saadat Irfan, Hong Haiping
J Nanosci Nanotechnol. 2017 Jan;17(1):405-12. doi: 10.1166/jnn.2017.12799.
In this paper, a new type of sensor and associated system for complete online monitoring of scale deposition with great accuracy and reliability is fabricated and characterized. The system is based on carbon nanotubes (CNTs), which have unique sensing/electronic properties along with physical and chemical stability in corrosive and hostile environments required for the oil and gas application. CNTs inkjet printing technique is used to fabricate the CNTs sensor. The sensitivity of the films, real time monitoring of brine solution, stability of the films in various solvents and fluids and the ability of setting and resetting of the sensor are studied. The results of these studies indicate that adding of one brine solution on the surface of the CNTs inkjet printing increases the resistance from 0.50 kΩ to 1.50 kΩ. The CNTs inkjet printing sample is found to be stable even after 48 hours of soaking the whole sample in DI-water. This sensor not only shows good sensing response for detection of the deposition of brine, but can also be easily reset back many times by just wash it with DI-water. This simple sensor is ideally suited for real time monitoring and the response time of the film is found to be from 15–30 s.
本文制备并表征了一种新型传感器及相关系统，用于高精度、高可靠性地在线全面监测结垢情况。该系统基于碳纳米管（CNT），碳纳米管具有独特的传感/电子特性，并且在油气应用所需的腐蚀性和恶劣环境中具有物理和化学稳定性。采用碳纳米管喷墨打印技术制备碳纳米管传感器。研究了薄膜的灵敏度、盐水溶液的实时监测、薄膜在各种溶剂和流体中的稳定性以及传感器的设置和重置能力。这些研究结果表明，在碳纳米管喷墨打印表面添加一种盐水溶液会使电阻从0.50 kΩ增加到1.50 kΩ。即使将整个样品在去离子水中浸泡48小时后，发现碳纳米管喷墨打印样品仍保持稳定。这种传感器不仅对盐水沉积检测显示出良好的传感响应，而且只需用去离子水冲洗就能轻松多次重置。这种简单的传感器非常适合实时监测，发现薄膜的响应时间为15 - 30秒。
