Humidity response of single carbon nanocoil and its temperature sensor independent of humidity and strain
Humidity response of single carbon nanocoil and its temperature sensor independent of humidity and strain
复制标题
单个碳纳米线圈及其温度传感器的湿度响应与湿度和应变无关
DOI：
10.1016/j.apsusc.2022.154745
复制
发表时间：
2022-12
影响因子：
6.7
通讯作者：
Chenghao Deng
中科院分区：
文献类型：
--
作者：
Siqi Zhao;Yeti Li;Fengming Wu;Runcheng Hu;Chenghao Deng
·单个碳纳米线圈（CNC）显示出快速且与应变无关的湿度响应。·NH3H2O处理大大抑制了CNC的湿度响应。·通过缺陷和空位引入非挥发性水分子。·阐述了CNC的空穴传导及其与水分子的相互作用。·实现了湿度无关的温度传感器。碳纳米线圈（CNC）是一种具有独特螺旋形态的准一维材料，为水和其他气体分子的吸附提供了丰富的场所。在此，我们研究了CNCs的湿度响应，包括响应机制和进一步的调控。采用1200 ℃热处理、HCl、NH3 H2 O和H2 O2处理等方法对CNC的物理和化学结构进行修饰，调节其湿度响应，并分析其响应机理。我们实验证明了CNCs的p型导电和吸附水分子的施主特性，这不受处理方法的影响。研究发现，NH3 H2 O处理极大地抑制了CNCs的湿度响应（几乎没有响应），而不影响CNCs的温度响应，而退火同时抑制了CNCs的湿度和温度响应。由于CNCs中含有丰富的空位、缺陷和官能团，NH3 H2 O处理将非挥发性水分子引入CNCs中，阻止了水分子的进一步吸附，抑制了CNCs的湿度响应。通过这种方法，我们实现了一个独立的CNCs的温度传感器，没有响应的湿度，这为基于单CNCs的设备，是独立的湿度和应变铺平了道路。
• Single carbon nanocoil (CNC) shows rapid and strain-independent humidity response. • NH 3 H 2 O treatment greatly suppresses the humidity response of CNC. • Non-volatile water molecules were introduced through defects and vacancies. • Hole conduction of CNC and its interaction with water molecules were demonstrated. • A humidity-independent temperature sensor was achieved. Carbon nanocoil (CNC) is a quasi-one dimensional material with unique helical morphology, which provides abundant sites for the adsorption of water and other gas molecules. Herein, we investigated the humidity response of CNCs, including the response mechanism and further regulation. We used several methods to modify the physical and chemical structures of CNC, including 1200 o C annealing, HCl, NH 3 H 2 O and H 2 O 2 treatments, to regulate its humidity response and analyze response mechanism. We experimentally demonstrated the p-type conduction of CNCs and the donor characteristic of the adsorbed water molecules, which are not affected by treatment methods. It is found that NH 3 H 2 O treatment greatly suppresses the humidity response (almost no response) without affecting the temperature response of CNCs, while annealing suppresses the humidity and temperature response of CNCs simultaneously. Due to the abundant vacancies, defects and functional groups in CNCs, NH 3 H 2 O treatment introduces non-volatile water molecules into CNCs, which prevent further adsorption of water molecules and inhibit the humidity response of CNCs. By this way, we achieved an independent temperature sensor of CNCs with no response to humidity, which paves the way for the device based on single CNCs that is independent of humidity and strain.
登录
查看更多内容
DOI：
10.3390/s21030857
发表时间：
2021-01-28
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Li P;Yu S;Zhang H
通讯作者：
Zhang H
影响因子：
9.5
作者：
Yang Wang;Lina Zhang;Jinping Zhou;A. Lu
通讯作者：
Yang Wang;Lina Zhang;Jinping Zhou;A. Lu
影响因子：
10.9
作者：
He Ma;K. Nakata;L. Pan;K. Hirahara;Y. Nakayama
通讯作者：
He Ma;K. Nakata;L. Pan;K. Hirahara;Y. Nakayama
影响因子：
9.5
作者：
Sharma, Sudeep;Chhetry, Ashok;Park, Jae Yeong
通讯作者：
Park, Jae Yeong
影响因子：
4.1
作者：
Shin Hu;Chi-young Lee;H. Chiu
通讯作者：
Shin Hu;Chi-young Lee;H. Chiu