Preparation and Electrosorption Desalination Performance of Peanut Shell-Based Activated Carbon and MoS₂

摘要

Seawater desalination is an unavoidable path to solve the freshwater crisis. Compared with othermethods, hybrid capacitive deionization (HCDI) is considered promising, showing competence inefficiency and cost. In this study, activated carbon based on peanut shells and molybdenum disulfide(MoS 2 ) was prepared using a hydrothermal method, and the as-prepared products were subjected to heattreatment for more effective charge transfer. The synthesized materials were characterized using X-raydiffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), andenergy dispersive spectrometry (EDS), along with Raman spectra analysis and electrochemicalworkstation and BET analyses. The electrodes demonstrated outstanding HCDI performance, with anelectrosorption capacity of 8.98 mg/g. The above result was attributed to the large pore width of thepeanut shell-based activated carbon and the decreased resistance of the MoS 2 . Moreover, the possibilityof using solar power as a power source for HCDI is proven during tests, promoting the application ofthe study for portable seawater desalination in arid coastal and island regions worldwide.