Preparation Of Carbon Fibers/Graphene/Nial-layered Double Hydroxide And Electrochemical Properties Research

In this study, carbon fibers/graphene/NiAl-layered double hydroxide (CFs/GO/NiAl-LDHs) composite material was prepared by combination of electrochemicalsynthesis with graphene modified carbon fiber as a substrate. Structure and nature ofthe material was characterized by filed emission scanning electron microscope(FE-SEM), X-ray diffraction (XRD), Fourier transform infrared spectrum (FT-IR),X-ray photoelectron spectroscopy (XPS) and electrochemical methods.CFs/GO/NiAl-LDHs was adopted as adsorbent to remove2,6-dichlorophenol (2,6-DCP) by potentiostatic technique. The effects of electrode potential, time,temperature, pH and initial concentration on the removal efficiency of2,6-DCP wereinvestigated. The kinetic and thermodynamic analyses indicated that the removal of2,6-DCP by electrosorption could be described by pseudo second-order kineticsequation and Langmuir equation, the adsorption was spontaneous and exothermic.The electrochemical behavior towards methanol or ethanol was investigated atCFs/GO/NiAl-LDHs by cyclic voltammetry. The material showed a significantlyhigher activity for methanol or ethanol oxidation. The material electrodes werecharacterized by galvanostatic charge/discharge measurements in alkaline solution.The result showed definite electrochemical characteristics as capacitance.