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Title: Biomass-derived porous graphene for electrochemical sensing of dopamine
Cost-effective valorization of biomass into advanced carbon remains a challenge. Here we reported a facile and ultrafast laser writing technique to convert biomass into porous graphene for electrochemical sensing. Laser-induced graphene (LIG) was synthesized from a fully biomass-based film composed of kraft lignin (KL) and cellulose nanofibers (CNFs). The LIG-based electrode was applied to detect dopamine using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. Dopamine with a concentration ranging from 5 to 40 μM was detected linearly, with a sensitivity of 4.39 μA μM −1 cm −2 . Our study eliminated the use of synthetic polymer for lignin-based film formation. It demonstrated the feasibility of using the film fully composed of biomass for LIG formation. Furthermore, derived LIG electrodes were shown to have high electrochemical sensing performance.  more » « less
Award ID(s):
1933861
PAR ID:
10297912
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
RSC Advances
Volume:
11
Issue:
25
ISSN:
2046-2069
Page Range / eLocation ID:
15410 to 15415
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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