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From Hazardous Waste to Green Applications: Selective Surface Functionalization of Waste Cigarette Filters for High-Performance Robust Triboelectric Nanogenerators and CO2 Adsorbents

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.

Publication metadata

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


DOI: 10.1021/acsami.2c06463

PubMed id: 35792904


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