Journal article
A monolithic nano-scale sensor architecture with tuneable gas diffusion for molecular fingerprinting
Alishba T John, Mahdiar Taheri, Jodie A Yuwono, Priyank Kumar, David R Nisbet, Krishnan Murugappan, Antonio Tricoli
Journal of Materials Chemistry A | Royal Society of Chemistry | Published : 2024
DOI: 10.1039/d3ta07282g
Abstract
Semiconducting metal oxide (SMO) gas sensors have emerged as an invaluable technology due to their high sensitivity and ease of fabrication. However, they have limited selectivity and require relatively high operational temperatures. Here, we present a monolithic membrane-chemoresistive sensor consisting of a hierarchical metal oxide (MO) and a metal–organic framework (MOF) layer. Both layers were made by sequential aerosol deposition of SnO2 and ZnO nanoparticles, with the latter being thereafter converted to zeolitic imidazolate framework (ZIF-8) by chemical vapour conversion. The SnO2 fractal network provides a high surface area for chemical sensing, while the multi-scale porous ZIF-8 mem..
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Grants
Awarded by Australian Research Council for a Future Fellowship
Awarded by North Atlantic Treaty Organization Science for Peace and Security Programme project AMOXES
Awarded by Department of Defence and Australian Research council for the National Intelligence and Security Discovery Research Grants (NISDRG) Program
Awarded by NHMRC Research Leadership Fellowship
Funding Acknowledgements
A. T. gratefully acknowledges the support of the Australian Research Council for a Future Fellowship (FT200100939) and Discovery grant DP190101864. A. T. also acknowledges financial support from the North Atlantic Treaty Organization Science for Peace and Security Programme project AMOXES (#G5634). K. M. and A. T. acknowledge financial support from the Department of Defence and Australian Research council for the National Intelligence and Security Discovery Research Grants (NISDRG) Program (NS210100083). J. A. Y. acknowledges the high-performance computing support from National Computational Infrastructure (NCI) Australia. D. R. N. was supported by a NHMRC Research Leadership Fellowship GNT1135657 and subsequently an Australian Research Council for a Future Fellowship (FT230100220). A. T. J. acknowledges Dr Renheng Bo for initial assistance in material synthesis. HRTEM analyses were performed at the TEM facility of the Unitech COSPECT (University of Milan). All authors acknowledge the facilities and the scientific and technical assistance of Microscopy Australia at the Centre for Advanced Microscopy, Australian National University, a facility that is funded by the University and the Federal Government. This research was funded by and has been delivered in partnership with Our Health in Our Hands (OHIOH), a strategic initiative of the Australian National University, which aims to transform healthcare by developing new personalised health technologies and solutions in collaboration with patients, clinicians, and health care providers.