A Highly Selective Metal-Organic Framework Textile Humidity Sensor
Vijjapu, Mani Teja
Andres, Miguel Angel
Salama, Khaled N.
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Chemical Science Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Functional Materials Design, Discovery and Development (FMD3)
Physical Science and Engineering (PSE) Division
Embargo End Date2021-06-09
Permanent link to this recordhttp://hdl.handle.net/10754/663545
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AbstractThe increase in demand and popularity of smart textiles brings new and innovative ideas to develop a diverse range of textile-based devices for our daily life applications. Smart textile-based sensors (TEX sensors) become attractive due to the potential to replace current solid-state sensor devices with flexible and wearable devices. We have developed a smart textile sensor for humidity detection using a metal-organic framework (MOF) as an active thin-film layer. We show for the first time, the use of the Langmuir-Blodgett (LB) technique for the deposition of a MIL-96(Al) MOF thin film directly onto the fabrics containing interdigitated textile electrodes for the fabrication of a highly selective humidity sensor. The humidity sensors were made from two different types of textiles, namely, linen and cotton, with the linen based sensor giving the best response due to better coverage of MOF. The TEX sensor showed a reproducible response after multiple cycles of measurements. After three weeks of storage, the sensor showed a moderate decrease in response. Moreover, TEX sensors showed a high level of selectivity for the detection of water vapors in the presence of several volatile organic compounds (VOCs). Interestingly, the selectivity is superior to some of the previously reported MOF coated solid-state interdigitated electrode devices and textile sensors. The method herein described is generic and can be extended to other textiles and coating materials for the detection of toxic gases and vapors.
CitationRauf, S., Vijjapu, M. T., Andres, M. A., Gascón, I., Roubeau, O., Eddaoudi, M., & Salama, K. N. (2020). A Highly Selective Metal-Organic Framework Textile Humidity Sensor. ACS Applied Materials & Interfaces. doi:10.1021/acsami.0c07532
SponsorsM.A. Andrés acknowledges the support of Ministerio de Educación from the Spanish Government under a FPU grant (Formación de Profesorado Universitario, FPU14/05367) and a short term mobility FPU grant (EST18/00291) and of King Abdullah University of Science and Technology and Advanced Membranes and Porous Materials Center under the Visiting Student Program. Authors also acknowledge Prof. Dr. Christian Serre for kindly providing MIL-96(Al) NPs used in this contribution.
We acknowledge the financial support from King Abdullah University of Science and Technology (KAUST), Saudi Arabia. K.N. Salama would like to acknowledge the funding from AMPM center under the CCF grant. Also, the research leading to these results has received funding from Spanish MINECO and FEDER (projects MAT2016-78257-R and MAT2017-86826-R), and the Aragon Government (DGA) and FEDER (research group E31_17R).
PublisherAmerican Chemical Society (ACS)