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Development of Polypyrrole/Graphene Oxide Gas Sensor for Detection of Coffee Aroma
Abstract
Detecting and characterizing coffee aroma is crucial for determining the quality of coffee. While gas chromatography is the standard method, using gas sensors is a feasible alternative. The electrode material used extensively influences the response produced by the gas sensor. This study explores using composites of the conductive polymer polypyrrole (PPy) and graphene oxide (GO) as materials for gas sensor electrodes. In the study, we synthesized PPy and GO and characterized them using UV-Vis and FTIR spectrophotometry, confirming that the compounds obtained were PPy and GO. The researchers varied the composition and thickness of PPy/GO in electrode fabrication. Varying the percentage of GO in the composite by 0, 5, 10, and 15% GO resulted in different PPy/GO compositions, while electrode thicknesses observed were 0.083, 0.21, 0.39, and 60 mm. Electrode characterization, including sensitivity, conductivity, and response time, showed that the PPy/GO electrode with a composition of 15% GO and a thickness of 0.21 mm had the best response. The PPy/GO sensor was tested on the aroma of Robusta coffee from three different plantations in the Jember area, East Java. It was able to distinguish the aroma of coffee. Measurement of electrode reproducibility in measuring each sample for one month showed consistent results from week to week, with a %RSD of less than 5%. The research results demonstrate that the PPy/GO sensor with a GO composition of 15% and a thickness of 0.21 mm has excellent potential for differentiating the aroma of coffee with different compositions of constituent compounds.
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Ahmed, F. mikdad, Hassan, S. M. and Kamil, M. I. (2020) ‘The DC electrical Conductivity of prepared pure polypyrrole and polypyrrole /graphene (PPY/GN) nanocomposite by in-situ polymerization’, Iraqi Journal of Physics, 18(44), pp. 50–61. doi: 10.30723/ijp.v18i44.500.
Ansari, R. (2006) ‘Polypyrrole Conducting Electroactive Polymers: Synthesis and Stability Studies’, E-Journal of Chemistry, 3(4), pp. 186–201. doi: 10.1155/2006/860413.
Bai, H. and Shi, G. (2007) ‘Gas sensors based on conducting polymers’, Sensors, 7(3), pp. 267–307. doi: 10.3390/s7030267.
Bhargava, P. et al. (2020) ‘Substrate comparison for polypyrrole-graphene based high-performance flexible supercapacitors’, Electrochimica Acta. Elsevier Ltd, 358. doi: 10.1016/j.electacta.2020.136846.
Chang, J. F. et al. (2002) ‘The effects of thickness and operation temperature on ZnO:Al thin film CO gas sensor’, Sensors and Actuators, B: Chemical, 84(2–3), pp. 258–264. doi: 10.1016/S0925-4005(02)00034-5.
Chiou, J. C., Wu, C. C. and Lin, T. M. (2019) ‘Sensitivity enhancement of acetone gas sensor using polyethylene glycol/multi-walled carbon nanotubes composite sensing film with thermal treatment’, Polymers, 11(3). doi: 10.3390/polym11030423.
Decazy, F. et al. (2003) ‘Quality of different Honduran coffees in relation to several environments’, Journal of Food Science, 68(7), pp. 2356–2361. doi: 10.1111/j.1365-2621.2003.tb05772.x.
Esmaeili, A. and Entezari, M. H. (2014) ‘Facile and fast synthesis of graphene oxide nanosheets via bath ultrasonic irradiation’, Journal of Colloid and Interface Science. Elsevier Inc., 432, pp. 19–25. doi: 10.1016/j.jcis.2014.06.055.
Farea, M. A. et al. (2021) ‘Carbon monoxide sensor based on polypyrrole–graphene oxide composite: a cost-effective approach’, Applied Physics A: Materials Science and Processing. Springer Berlin Heidelberg, 127(9), pp. 1–12. doi: 10.1007/s00339-021-04837-7.
Guerrero-Contreras, J. and Caballero-Briones, F. (2015) ‘Graphene oxide powders with different oxidation degree, prepared by synthesis variations of the Hummers method’, Materials Chemistry and Physics. Elsevier B.V, 153, pp. 209–220. doi:
1016/j.matchemphys.2015.01.005.
Imamura, G. et al. (2020) ‘Graphene oxide as a sensing material for gas detection based on nanomechanical sensors in the static mode’, Chemosensors, 8(3), pp. 1–17. doi: 10.3390/chemosensors8030082.
Khalili, D. (2016) ‘Graphene oxide : a promising carbocatalyst for the regioselective thiocyanation of aromatic amines , phenols , anisols and enolizable ketones by hydrogen peroxide / KSCN in water Department of Chemistry , College of Sciences , Shiraz University , Shiraz 7’, New Journal of Chemistry, 40(3), pp. 2547–2553.
Konwer, S., Boruah, R. and Dolui, S. K. (2011) ‘Studies on conducting polypyrrole/graphene oxide composites as supercapacitor electrode’, Journal of Electronic Materials, 40(11), pp. 2248–2255. doi: 10.1007/s11664-011-1749-z.
Luo, R. et al. (2019) ‘A printed and flexible NO2 sensor based on a solid polymer electrolyte’, Frontiers in Chemistry, 7(APR), pp. 1–9. doi: 10.3389/fchem.2019.00286.
Ma, T. et al. (2013) ‘The composites based on plasticized starch and graphene oxide/reduced graphene oxide’, Carbohydrate Polymers. Elsevier Ltd., 94(1), pp. 63–70. doi: 10.1016/j.carbpol.2013.01.007.
Navale, S. T. et al. (2014) ‘Highly sensitive, reproducible, selective and stable CSA-polypyrrole NO2 sensor’, Synthetic Metals. Elsevier B.V., 189, pp. 111–118. doi: 10.1016/j.synthmet.2014.01.005.
Nosheen, S. et al. (2020) ‘Synthesis and Characterization of Polypyrrole Synthesized via Different Routes’, 9(06), pp. 1630–1633.
Patil, P. et al. (2016) ‘Gas Sensitivity Study of Polypyrrole Decorated Graphene Oxide Thick Film’, Journal of The Institution of Engineers (India): Series D. Springer India, 97(1), pp. 47–53. doi: 10.1007/s40033-015-0085-5.
Prezioso, S. et al. (2013) ‘Graphene oxide as a practical solution to high sensitivity gas sensing’, Journal of Physical Chemistry C, 117(20), pp. 10683–10690. doi: 10.1021/jp3085759.
Qi, J. et al. (2014) ‘Fabrication of textile based conductometric polyaniline gas sensor’, Sensors and Actuators, B: Chemical, 202, pp. 732–740. doi: 10.1016/j.snb.2014.05.138.
Stejskal, J. et al. (2016) ‘Polypyrrole salts and bases: Superior conductivity of nanotubes and their stability towards the loss of conductivity by deprotonation’, RSC Advances, 6(91), pp. 88382–88391. doi: 10.1039/c6ra19461c.
Tang, X. et al. (2018) ‘A Fast and Room-Temperature Operation Ammonia Sensor Based on Compound of Graphene with Polypyrrole’, IEEE Sensors Journal, 18(22), pp. 9088–9096. doi: 10.1109/JSEN.2018.2869203.
Wang, C. et al. (2010) ‘Metal oxide gas sensors: Sensitivity and influencing factors’, Sensors, 10(3), pp. 2088–2106. doi: 10.3390/s100302088.
Yang, Z. et al. (2010) ‘Crystallization behavior of poly(ε-caprolactone)/layered double hydroxide nanocomposites’, Journal of Applied Polymer Science, 116(5), pp. 2658–2667. doi: 10.1002/app.
Zhang, S. et al. (2020) ‘Measuring the specific surface area of monolayer graphene oxide in water’, Materials Letters. Elsevier B.V., 261, p. 127098. doi: 10.1016/j.matlet.2019.127098.
DOI: http://dx.doi.org/10.30870/educhemia.v8i1.18231
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