Biomass-derived porous graphene for electrochemical sensing of dopamine

Abstract

Biomass-derived porous LIG as an electrochemical sensor for dopamine sensing with high sensitivity.

Upgrading Lignocellulose to Porous Graphene Enabled by Deep Eutectic Solvent Pretreatment: Insights into the Role of Lignin and Pseudo-lignin

“…The limit of detection (LOD) was 0.659 × 10 −6 M (S/N = 3), which was much lower than that of the previously reported biomass-derived dopamine sensor. 12 ■ CONCLUSIONS A green and facile technique was developed to convert lignocellulosic biomass into LIG-based electronics. The biomass-based films were fabricated from the cellulose pulps of corn stover pretreated by three DESs including ChCl:FA, ChCl:EG, and ChCl:OA.…”

“…Upgrading lignin to value-added bioproducts is of great importance to the biorefinery industry as it can add revenues to offset the costs for biofuels. It should be noted that technical lignin is often fabricated into a film substrate using a binder (e.g., polyvinyl alcohol (PVA), polyethylene oxide, and cellulose nanofibers) for laser writing. For a cellulose-based substrate (e.g., paper or cloth), LIG with good properties was derived and further explored for applications like sensors for detecting strain, humidity, temperature, etc. − Xylan, another major component of lignocellulosic biomass, was also explored for LIG-based electronics, which shed light on a new pathway of valorizing lignocellulosic substrates .…”

“…Lack of such understanding can limit the design and selection of DESs for pretreating biomass toward film fabrication. From the point of view of LIG formation, lignin has been reported to play a key role in lignocellulose-based substrates. ,,, It should be noted that pseudo-lignin, a lignin-like substance, can be formed from side reactions of sugar degradation compounds (e.g., hydroxymethylfurfural (HMF) and furfural) under severely acidic conditions (Figure S1). Pseudo-lignin formation leads to low-quality pulp for enzymatic hydrolysis.…”

Lignin-derived porous graphene for wearable and ultrasensitive strain sensors

“…As lignin is typically recovered in a powder form from biorefinery, lignin-based films can be made using a binder such as PVA, PEO, and cellulose nanofibers (typically not contributing to LIG formation) to well suit direct laser writing. [31][32][33] This strategy would enable the mass production of lignin derived LIG as renewable advanced carbon materials via a roll-to-roll manufacturing process. Prior studies reported that lignin derived LIG has high potential in energy storage and sensing applications.…”

Graphene nanosheet-sandwiched platinum nanoparticles deposited on a graphite pencil electrode as an ultrasensitive sensor for dopamine

“… 10 This serious issue is addressed by electrode surface modification using various active electrochemical materials to achieve a well-resolved peak of dopamine. 13,14 The modified electrodes like MgO nanobelts/GCE, 15 Ag/CuO porous nanobelts, 16 Ni-MOF/GCE, 17 PA6/PAH-MWCNTs nanofibers/ITO, 18 biomass-derived porous graphene 19 , and flake shaped CuO nanoparticles/MCPE 20 were used for the sensing of dopamine.…”