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Int J Biol Macromol

Title:		Highly sensitive formaldehyde sensors based on CuO/ZnO composite nanofibrous mats using porous cellulose acetate fibers as templates
Author(s):		Su H; Li H; Lin H; Shi X; Du Y; Luo Y; Deng H;
Address:		"Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China. Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518000, China. Electronic address: luoyan@mail.amr.sz.gov.cn. Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China; Shenzhen Research Institute, Wuhan University, Shenzhen 518063, China. Electronic address: hbdeng@whu.edu.cn"
Journal Title:		Int J Biol Macromol
Year:		2022
Volume:		20220228
Issue:
Page Number:		653 - 660
DOI:		10.1016/j.ijbiomac.2022.02.167
ISSN/ISBN:		1879-0003 (Electronic) 0141-8130 (Linking)
Abstract:		"An innovative formaldehyde sensor based on CuO/ZnO composite nanofibrous mats (C-NFMs) coated quartz crystal microbalance (QCM), which is capable of stable determination of formaldehyde gas at ambient temperatures sensitively and selectively, has been successfully fabricated. Triaxial and highly porous C-NFMs with high surface area (126.53 m(2) g(-1)) were synthesized by electrospinning a sol-gel cellulose acetate (CA)/CuAc(2)/ZnAc(2) complex solution and following by calcination process. Benefiting from the unique heterojunction structure, immense pore interconnectivity and large surface area of C-NFMs, the as-developed QCM sensors exhibited an extremely low limit of detection (LOD) down to 26 ppb and a limit of quantification value equals to 87 ppb. Besides, the C-NFMs coated QCM sensors also demonstrated short response times (80s), the long-term stability during 3 weeks as well as good selectivity to formaldehyde over diverse volatile organic compounds. The sorption equilibrium in the adsorption process of QCM coated sensors was well met with the Freundlich model, which certified the heterogeneous adsorption between formaldehyde gas and C-NFMs"
Keywords:		Cellulose/analogs & derivatives Copper Formaldehyde *Nanofibers/chemistry Porosity *Zinc Oxide/chemistry Cellulose acetate Formaldehyde detection Heterostructure;
Notes:		"MedlineSu, Huiyu Li, Hao Lin, Heng Shi, Xiaowen Du, Yumin Luo, Yan Deng, Hongbing eng Netherlands 2022/03/04 Int J Biol Macromol. 2022 May 1; 206:653-660. doi: 10.1016/j.ijbiomac.2022.02.167. Epub 2022 Feb 28"