reparation of Spherical Micro-mesopore Hierarchical Carbon from Phenol-Formaldehyde via Soft Template Method

• 1、Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040
• 2、College of Science,Northeast Forestry University, Harbin 150040

Abstract：A facile soft-template method was developed for the synthesis of spherical micro-mesoporous hierarchical carbon material (SHC) by using phenol and formaldehyde as source obtained thermosetting resin in basic, Pluronic F127 as a template by Self-assemble got mesophase. Surface area and porosity analyzer, scanning electron spectroscopy (SEM), transmission electron microscope (TEM) and thermal analysis was used to observation the surface morphology, and testing the performance. Results show that samples are regulated morphology by soft-template, pH and activation temperature. The optimum condition was determined as surfactant mass fraction 20% , pH 0.5 and activation temperature 700 ℃. The prepared porous carbon under the above conditions exhibited spherical structure with uniformly diameter of 100～200 nm and disperse well. Obviously vermicular pore structure, together with bimodal pore size distribution peak 2.9 nm and 1.3 nm was observed. Maximum of surface area and pore volume can reach 503.20 m2∕g and 0.42 cm3∕g, respectively. Results reveal that the surface area, pore total volume of samples increased with the increasing of activation temperature. However, pore size showed reverse trendency.

Keywords： chemistry spherical micro-mesoporous hierarchical porous carbon soft template phenol-formaldehyde