Methanol and Humidity Capacitive Sensors Based on Thin Films of MOF Nanoparticles
Name:
revised manuscript am-final.pdf
Size:
702.4Kb
Format:
PDF
Description:
Accepted Manuscript
Type
ArticleAuthors
Andrés, Miguel A.
Vijjapu, Mani Teja
Surya, Sandeep Goud

Shekhah, Osama

Salama, Khaled N.

Serre, Christian

Eddaoudi, Mohamed

Roubeau, Olivier

Gascón, Ignacio

KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical 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
Sensors Lab
Date
2020-01-07Online Publication Date
2020-01-07Print Publication Date
2020-01-22Embargo End Date
2021-01-07Submitted Date
2019-11-14Permanent link to this record
http://hdl.handle.net/10754/661010
Metadata
Show full item recordAbstract
The successful development of modern gas sensing technologies requires high sensitivity and selectivity coupled to cost effectiveness, which implies the necessity to miniaturize devices while reducing the amount of sensing material. The appealing alternative of integrating nanoparticles of a porous metal−organic framework (MOF) onto capacitive sensors based on interdigitated electrode (IDE) chips is presented. We report the deposition of MIL-96(Al) MOF thin films via the Langmuir−Blodgett (LB) method on the IDE chips, which allowed the study of their gas/ vapor sensing properties. First, sorption studies of several organic vapors like methanol, toluene, chloroform, etc. were conducted on bulk MOF. The sorption data revealed that MIL-96(Al) presents high affinity toward water and methanol. Later on, ordered LB monolayer films of MIL-96(Al) particles of ∼200 nm were successfully deposited onto IDE chips with homogeneous coverage of the surface in comparison to conventional thin film fabrication techniques such as drop-casting. The sensing tests showed that MOF LB films were selective for water and methanol, and short response/recovery times were achieved. Finally, chemical vapor deposition (CVD) of a porous thin film of Parylene C (thickness∼250−300 nm) was performed on top of the MOF LB films to fabricate a thin selective layer. The sensing results showed an increase in the water selectivity and sensitivity, while those of methanol showed a huge decrease. These results prove the feasibility of the LB technique for the fabrication of ordered MOF thin films onto IDE chips using very small MOF quantitiesCitation
Andrés, M. A., Vijjapu, M. T., Surya, S. G., Shekhah, O., Salama, K. N., Serre, C., … Gascón, I. (2020). Methanol and Humidity Capacitive Sensors Based on Thin Films of MOF Nanoparticles. ACS Applied Materials & Interfaces. doi:10.1021/acsami.9b20763Sponsors
The research leading to these results has received funding from Spanish MINECO and FEDER (projects MAT2016-78257-R and MAT2017-86826-R), the Aragon Government (DGA) and FEDER (research group E31_17R). M.A.A. acknowledges the support of Ministerio de Educacion from the Spanish ́ Government under an FPU grant (Formacion de Profesorado ́ Universitario, FPU14/05367), a short-term mobility FPU grant (EST18/00291), and of the King Abdullah University of Science and Technology and Advanced Membranes and Porous Materials Center under the Visiting Student Program. The authors acknowledge the use of the Laboratorio de Microscopí as Avanzadas (LMA) at the Instituto de Nanociencia de Aragon (INA, Universidad de Zaragoza). The ́ authors also thank Dr. Prashant Batt and Dr. Zied Ouled for technical support in gas sorption experiments and Dr. Guillermo Antorrena for technical support in GIXRD experiments.Publisher
American Chemical Society (ACS)Additional Links
https://pubs.acs.org/doi/10.1021/acsami.9b20763ae974a485f413a2113503eed53cd6c53
10.1021/acsami.9b20763