Yarn-based superhydrophobic wearable sensors for ammonia gas detection at room temperature  

作　　者：Hao Zhao Tao Yang Hao-Kai Peng Hai-Tao Ren Bing-Chiuan Shiu Jia-Horng Lin Ting-Ting Li Ching-Wen Lou 

机构地区：[1]School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China [2]Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials,Tiangong University,Tianjin 300387,China [3]College of Materials and Chemical Engineering,Minjiang University,Fuzhou 350108,China [4]Advanced Medical Care and Protection Technology Research Center,College of Textile and Clothing,Qingdao University,Qingdao 266071,China [5]Shaoxing Keqiao Institute of Tiangong University,Shaoxing 312030,China

出　　处：《Frontiers of Materials Science》2025年第1期51-62,共12页材料学前沿(英文版)

基　　金：supported by the Fund of China National-Textile and Apparel Council(Grant Nos.2022033 and 2022015).

摘　　要：Conventional metal-oxide-semiconductor(MOS)gas sensors are limited in wearable gas detection due to their non-flexibility,high operating temperature,and less durability.In this study,a yarn-based superhydrophobic flexible wearable sensor for room-temperature ammonia gas detection was prepared based on the nano-size effect of both nanocore yarns prepared through electrostatic spinning and MOS gas-sensitive materials synthesized via a two-step hydrothermal synthesis approach.The yarn sensor has a response sensitivity of 13.11 towards 100 ppm(1 ppm=10^(−6))ammonia at room temperature,a response time and a recovery time of 36 and 21 s,respectively,and a detection limit as low as 10 ppm with the sensitivity of up to 4.76 towards ammonia.In addition,it displays commendable linearity within the concentration range of 10‒100 ppm,accompanied by remarkable selectivity and stability,while the hydrophobicity angle reaches 155.74°.Furthermore,its sensing performance still maintains stability even after repeated bending and prolonged operation.The sensor also has stable mechanical properties and flexibility,and can be affixed onto the fabric surface through sewing,which has a specific potential for clothing use.

关 键 词：ammonia sensor SUPERHYDROPHOBICITY metal oxide semiconductor flexible wearable sensor 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]