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Lookup NU author(s): Sunanda Roy, Dr Kheng-Lim GohORCiD
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This article reports a novel and rational approach to convert waste cigarette filters (CFs), one of the largest sources of ocean pollution, into high-performance triboelectric nanogenerators (TENGs) and efficient CO2-capturing adsorbents. CFs are plasticized cellulose acetate, which take several years to degrade. To revalorize these fibers, selective amine surface functionalization is performed (10PAL-20T-CFs). For the proof of concept, when the modified fibers are employed in a TENG, it could generate an output voltage (96.63 V) and current (9.37 μA) that are, respectively, 43 and 8 times higher than those obtained employing the pristine CFs for the nanogenerator. The proposed TENG displays an instantaneous peak power of 3.75 mW, which is higher than that of many recently reported TENGs made from cellulose materials. Moreover, the TENG displayed outstanding durability to humidity and high-performance stability when it is subjected to cyclic loading (i.e., 12,000 cycles of loading-unloading). A 9 cm2 TENG could effectively light up 100 or more colored light-emitting diodes when it is manually pressed. Finally, the modified filter fibers show an excellent CO2 adsorption capacity of 1.93 mmol/g, which is 9.2 times higher than that obtained using the pristine fibers. These results demonstrate that hazardous wastes such as CFs can be upcycled into valuable resources.
Author(s): Roy S, Das T, Dasgupta Ghosh B, Goh KL, Sharma K, Chang Y-W
Publication type: Article
Publication status: Published
Journal: ACS Applied Materials and Interfaces
Year: 2022
Volume: 14
Issue: 28
Pages: 31973-31985
Print publication date: 20/07/2022
Online publication date: 06/07/2022
Acceptance date: 24/06/2022
ISSN (print): 1944-8244
ISSN (electronic): 1944-8252
Publisher: American Chemical Society
URL: https://doi.org/10.1021/acsami.2c06463
DOI: 10.1021/acsami.2c06463
PubMed id: 35792904
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