Fabricating Porous Carbon Materials by One-Step Hydrothermal Carbonization of Glucose

The present study concerned the production of glucose-based porous carbon materials by a one-step acid-catalyzed HTC. samples were characterized elemental analysis (EA), scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET), Fourier transform infrared (FTIR) and point zero charge (pzc). Experimental results showed that addition sulfuric acid (SA) with different dosages in HTC system could improve yield products reduce chemical oxygen demand (COD) process water. When glucose was at mass ratio 1:4 (glucose: SA = 1:4), hydrochar obtained (H-G9) had larger specific surface area (SBET 296.71 m2/g) higher abundance functional groups on than other samples, such as sulfur-containing carboxylic groups, belonged to mesoporous material highly negatively charged. H-G9 exhibited optimum adsorption for methylene blue (MB). adsorbed MB an initial concentration 10 mg/L pH 6 25 °C. isotherm demonstrated Freundlich be better applied. Regeneration efficiency 88% achieved saturated H-G9. This prepared simple hydrothermal carbonization presence SA. maximum monolayer capacity high 332.46 mg/g MB, which well beyond commercial activated (259.37 mg/g). indicates has great potential removal from wastewater.