文献类型：期刊文献

英文题名：Facilitating Response/Recovery of cellulosic humidity sensor by Densificating fibril Arrays

作者：Geng, Mengru[1] Zhao, Jiaqi[1] Li, Jie[1,2,3,4] Liu, Boyue[5] Liu, Ruiming[1] Wang, Xiaojuan[1] Song, Wanlong[1] Shao, Mingzhe[1] Luan, Yihao[1] Li, Qun[1] Gao, Meng[1] Zhang, Fengshan[2,3] Pan, Xiaosen[1,6] Ma, Ning[7] Fang, Guigan[4]

第一作者：Geng, Mengru

通信作者：Li, J[1];Pan, XS[1]

机构：[1]Tianjin Univ Sci & Technol, State Key Lab Biobased Fiber Mfg Technol, Tianjin 300457, Peoples R China;[2]Shandong Huatai Paper Co Ltd, Dongying 275335, Peoples R China;[3]Shandong Yellow Triangle Biotechnol Ind Res Inst C, Dongying 275335, Peoples R China;[4]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Biomass Energy & Mat Lab, Nanjing 210042, Peoples R China;[5]Tianjin Chengjian Univ, Sch Environm & Municipal Engn, Tianjin 300384, Peoples R China;[6]Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China;[7]Harbin Engn Univ, Qingdao Innovat & Dev Ctr, Qingdao 266400, Peoples R China

年份：2024

卷号：500

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20244517308161);Scopus(收录号：2-s2.0-85207765048);WOS:【SCI-EXPANDED(收录号:WOS:001348782800001)】；

基金：This work was funded by the National Natural Science Foundation of China (No. 52403104), the National Key Research and Development Program of China (2022YFC2105503), Shandong provincial Mount Taishan Industrial Leading Talent Project, the Open Fund of State Key Laboratory of Biobased Fiber Manufacturing Technology (SKL202309), Shandong provincial Taishan Scholarship for industry (2021.1-2024.12).

语种：英文

外文关键词：Cellulose; Humidity sensor; Response/recovery facilitation; Densification; Perovskite

摘要：Hydrophilic cellulosic materials exhibit extraordinary effectiveness on sensitivity of humidity. However, the fibril network in fiber walls hinders both permeability and desorption of water, resulting in to weak their responsiveness and recoverability to humidity. Here, structural optimization is achieved by modulating interfacial bonding, resulting in an unprecedented increment in the response-recovery speed of cellulosic humidity sensors. Precisely, hydrolyzable thiol silane is introduced between cellulose nanofibers and carbon nanotubes for a covalent interface, which promotes a dense structure under evaporation induction (76.33 % reduction in thickness), avoiding the deep penetration of water. In addition, Cs(2)SnCl(6 )perovskites are loaded by means of strong coordination to boost the chemical dissociation of water molecules, further enhancing the responsiveness and sensitivity of devices. The as-prepared sensor exhibits excellent response/recovery speed (1.8 s / 2.9 s) between 11 % RH to 95 % RH, which is ahead of cellulosic humidity sensors developed in the past three years, as well as satisfactory sensitivity (5.35 x 10(6) %), hysteresis (< 1 % RH), and stability (over 90 days). For application purposes, skin moisture, breathing patterns, and word syllables can be accurately identified. Moreover, it can monitor respiratory rate and amplitude stably during long-term exercise, indicating remarkable potential in human physiological humidity monitoring.