标题: Highly sensitive formaldehyde sensors based on CuO/ZnO composite nanofibrous mats using porous cellulose acetate fibers as templates

作者: Su, HY (Su, Huiyu); Li, H (Li, Hao); Lin, H (Lin, Heng); Shi, XW (Shi, Xiaowen); Du, YM (Du, Yumin); Luo, Y (Luo, Yan); Deng, HB (Deng, Hongbing)

来源出版物: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 卷: 206 页: 653-660 DOI: 10.1016/j.ijbiomac.2022.02.167 出版年: MAY 1 2022

摘要: 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)/CuAc2/ ZnAc2 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.

作者关键词: Cellulose acetate; Heterostructure; Formaldehyde detection

地址: [Su, Huiyu; Li, Hao; Lin, Heng; Shi, Xiaowen; Du, Yumin; Deng, Hongbing] Wuhan Univ, Hubei Key Lab Biomass Resource Chem & Environm Bi, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430079, Peoples R China.

[Luo, Yan] Shenzhen Inst Qual Safety Inspect & Res, Shenzhen 518000, Peoples R China.

[Deng, Hongbing] Wuhan Univ, Shenzhen Res Inst, Shenzhen 518063, Peoples R China.

通讯作者地址: Deng, HB (通讯作者)，Wuhan Univ, Hubei Key Lab Biomass Resource Chem & Environm Bi, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430079, Peoples R China.

Luo, Y (通讯作者)，Shenzhen Inst Qual Safety Inspect & Res, Shenzhen 518000, Peoples R China.

Deng, HB (通讯作者)，Wuhan Univ, Shenzhen Res Inst, Shenzhen 518063, Peoples R China.

电子邮件地址: luoyan@mail.amr.sz.gov.cn; hbdeng@whu.edu.cn

影响因子：6.953