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Multifunctional sodium alginate fabric based on reduced graphene oxide and polypyrrole for wearable closed-loop point-of-care application

Bi, Siyi and Hou, Lei and Lu, Yinxiang (2021) Multifunctional sodium alginate fabric based on reduced graphene oxide and polypyrrole for wearable closed-loop point-of-care application. Chemical Engineering Journal, 406 . Art. No. 126778. ISSN 1385-8947. https://resolver.caltech.edu/CaltechAUTHORS:20200827-144326622

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Abstract

Sodium alginate (SA) fabrics decorated with reduced graphene oxide (rGO) and polypyrrole (PPy) serving as multifunctional materials are prepared by thermal-press reduction and in-situ polymerization. The superior conductivity (0.17 kΩ·sq⁻¹) of SA/rGO/PPy composite fabric is optimized through L₉(3⁴) orthogonal experimental design. Microstructures of the resultant SA/rGO/PPy composite fabric are investigated by field emission -scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and X-ray diffraction measurement, respectively. It is found that SA/rGO/PPy composite fabric possesses not only excellent thermal stability but also mechanical durability. The results of NH3 gas experiments indicate that SA/rGO/PPy composite fabric exhibits reliable linearity of concentration (2–16 ppm) dependency, unique repeatability, a high sensing response (10.7%) at low detection limit of 2 ppm and admirable selectivity. Moreover, SA/rGO/PPy composite fabric acting as a heater can reach to approximately 40–90 ℃ at low voltage of 3 V to 9 V. Hence, the optimum SA/rGO/PPy composite fabric is supposed to be used as ultrasensitive NH3 gas sensor and wearable heater for nephropathy diagnosis purpose and thermo-responsive drug deliver in point-of-care (POC) application to develop a closed-loop treatment.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.cej.2020.126778DOIArticle
Additional Information:© 2020 Elsevier B.V. Received 22 May 2020, Revised 19 August 2020, Accepted 20 August 2020, Available online 27 August 2020. This work was supported by the National Natural Science Foundation of China (No. U1830108), the Innovation Foundation of Shanghai Aerospace Science and Technology (No. SAST2018-061), the program of China Scholarships Council (No. 201906100112). The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of ChinaU1830108
Innovation Foundation of Shanghai Aerospace Science and TechnologySAST2018-061
China Scholarship Council201906100112
Record Number:CaltechAUTHORS:20200827-144326622
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200827-144326622
Official Citation:Siyi Bi, Lei Hou, Yinxiang Lu, Multifunctional sodium alginate fabric based on reduced graphene oxide and polypyrrole for wearable closed-loop point-of-care application, Chemical Engineering Journal, Volume 406, 2021, 126778, ISSN 1385-8947, https://doi.org/10.1016/j.cej.2020.126778. (http://www.sciencedirect.com/science/article/pii/S1385894720329065)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105134
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Aug 2020 23:12
Last Modified:16 Sep 2020 22:16

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