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Flexible Synergistic MoS2 Quantum Dots/PEDOT: PSS Film Sensor for Acetaldehyde Sensing at Room Temperature
Analytical Chemistry ( IF 6.7 ) Pub Date : 2023-05-30 , DOI: 10.1021/acs.analchem.3c00365 Ling Jin 1 , Kai Yang 1 , Lifan Chen 1 , Ruran Yan 1 , Lifang He 1 , Mingfu Ye 1, 2 , Hongbin Qiao 1 , Xiangfeng Chu 1 , Hong Gao 1 , Kui Zhang 1
Analytical Chemistry ( IF 6.7 ) Pub Date : 2023-05-30 , DOI: 10.1021/acs.analchem.3c00365 Ling Jin 1 , Kai Yang 1 , Lifan Chen 1 , Ruran Yan 1 , Lifang He 1 , Mingfu Ye 1, 2 , Hongbin Qiao 1 , Xiangfeng Chu 1 , Hong Gao 1 , Kui Zhang 1
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Acetaldehyde (CH3CHO) is known as a primary carcinogen, and the development of wearable gas sensors for its detection at room temperature has rarely been rarely reported. Herein, MoS2 quantum dots (MoS2 QDs) have been employed to dope with poly(3,4-ethylenedioxythiophene): polystyrenesulfonate (PEDOT: PSS) via a simple in situ polymerization technique, and the CH3CHO gas-sensing properties of the resultant flexible and transparent film were investigated. MoS2 QDs had been evenly dispersed into the polymer, and it was shown that PEDOT: PSS doped with the 20 wt % MoS2 QDs sensor exhibited the highest response value of 78.8% against 100 ppm CH3CHO and its detection limit reached 1 ppm. Moreover, the sensor response remained stable for more than 3 months. In particular, the different bending angles (from 60 to 240°) had little effect on the sensor response to CH3CHO. The possible reason for the enhanced sensing properties was attributed to the large number of reaction sites on the MoS2 QDs and the direct charge transfer between the MoS2 QDs and PEDOT: PSS. This work suggested a platform to inspire MoS2 QDs-doping PEDOT: PSS materials as wearable gas sensors for highly sensitive chemoresistive sensors to detect CH3CHO at room temperature.
中文翻译：
柔性协同 MoS2 量子点/PEDOT：用于室温乙醛传感的 PSS 薄膜传感器
乙醛 (CH 3 CHO) 被认为是主要致癌物，而用于在室温下检测乙醛的可穿戴气体传感器的开发鲜有报道。在此，MoS 2量子点 (MoS 2 QDs) 已被用于通过简单的原位聚合技术与聚 (3,4-乙烯二氧噻吩): 聚苯乙烯磺酸盐 (PEDOT: PSS) 掺杂，以及 CH 3 CHO气敏特性对所得柔性透明薄膜进行了研究。MoS 2 QDs 已经均匀分散到聚合物中，结果表明，PEDOT：掺杂 20 wt% MoS 2 QDs 传感器的 PSS 对 100 ppm CH 3的响应值最高，为 78.8%CHO及其检出限达到1 ppm。此外，传感器响应保持稳定超过 3 个月。特别是，不同的弯曲角度（从 60 到 240°）对传感器对 CH 3 CHO的响应几乎没有影响。传感性能增强的可能原因归因于MoS 2 QD上的大量反应位点以及MoS 2 QD 和PEDOT：PSS 之间的直接电荷转移。这项工作提出了一个平台来激发 MoS 2 QDs 掺杂 PEDOT：PSS 材料作为可穿戴气体传感器，用于高灵敏度化学电阻传感器，以在室温下检测 CH 3 CHO。
更新日期：2023-05-30
中文翻译：
柔性协同 MoS2 量子点/PEDOT：用于室温乙醛传感的 PSS 薄膜传感器
乙醛 (CH 3 CHO) 被认为是主要致癌物，而用于在室温下检测乙醛的可穿戴气体传感器的开发鲜有报道。在此，MoS 2量子点 (MoS 2 QDs) 已被用于通过简单的原位聚合技术与聚 (3,4-乙烯二氧噻吩): 聚苯乙烯磺酸盐 (PEDOT: PSS) 掺杂，以及 CH 3 CHO气敏特性对所得柔性透明薄膜进行了研究。MoS 2 QDs 已经均匀分散到聚合物中，结果表明，PEDOT：掺杂 20 wt% MoS 2 QDs 传感器的 PSS 对 100 ppm CH 3的响应值最高，为 78.8%CHO及其检出限达到1 ppm。此外，传感器响应保持稳定超过 3 个月。特别是，不同的弯曲角度（从 60 到 240°）对传感器对 CH 3 CHO的响应几乎没有影响。传感性能增强的可能原因归因于MoS 2 QD上的大量反应位点以及MoS 2 QD 和PEDOT：PSS 之间的直接电荷转移。这项工作提出了一个平台来激发 MoS 2 QDs 掺杂 PEDOT：PSS 材料作为可穿戴气体传感器，用于高灵敏度化学电阻传感器，以在室温下检测 CH 3 CHO。
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