Non-precious metal nanoparticle electrocatalysts for electrochemical modification of lignin for low-energy and cost-effective production of hydrogen

Fine Chemicals Prepared by Bamboo Lignin Degradation through Electrocatalytic Redox between Cu Cathode and Pb/PbO2 Anode in Alkali Solution

“…This was probably caused by the reduction of hydroxyl groups amount after electrocatalytic degradation. The FT‐IR spectra showed an absorption at 1612 cm −1 attributed to the carbonyl stretching . The peaks at 1457 cm −1 and 1119 cm −1 were corresponded to the C−H asymmetric deformation in methoxyl groups and C−O‐C stretching vibration respectively, and the intensity decreases of the above peaks were indications of these bonds breaking during the electrocatalytic degradation process.…”

“…When comparing the Fourier transform infrared spectroscopy (FT‐IR) spectra of bamboo lignin after electrocatalytic degradation with before, it could be noticed that the intensity of the broad peak at 3455 cm −1 , which represented the stretching vibration of hydroxyl groups in both aliphatic and aromatic structures, was obviously samller. This was probably caused by the reduction of hydroxyl groups amount after electrocatalytic degradation.…”

An Overview on the Use of Lignin and Its Derivatives in Fire Retardant Polymer Systems

“…In recent years, lignin has been exploited in various polymer composite applications, for example, stabilizing agents, lubricants, coatings, plasticizers, surfactants, carbon fibre, fire retardant (FR), etc. For example, Movil et al [8] reported the generation of hydrogen through electrochemical oxidation of waste lignin from pulping mills for energy storage. Qin et al [9] grafted hydrophilic side chains on the sulphonated alkali lignin with different molecular weights, and the resultant product could be used as dispersants for coal-water slurry.…”

Greener Routes to Biomass Waste Valorization: Lignin Transformation Through Electrocatalysis for Renewable Chemicals and Fuels Production

“…Movil et al also studied the ECO of lignin using Ni, Co, and Ni-Co alloys supported on high-surface area carbon. [118] Co/C had the highest lignin oxidation rate while Ni/C and Ni-Co/C had similar electrochemical activities.Arapid decrease of the lignin oxidation current on the Ni/C and Co/C was reported and attributedt ot he reduced active sites caused by lignin adsorbed on the electrode surfaceo rd ue to the oxidative dissolution of the electrode material. Interestingly,t he decrease in current was not observed for the Ni-Co/C alloy electrode.…”

“…Interestingly,t he decrease in current was not observed for the Ni-Co/C alloy electrode. Further kinetic studies using aN i-Co/C electrode [118] and aC o core/Ptp artial shell alloy electrocatalyst on arotating disc electrode (RDE) [119] suggested that lignin oxidation is either a quasi-reversible or an irreversible reactiona nd is highly dependent on the concentrationo fl ignin in the system.…”