无机材料学报Issue(8)：848-854,7.DOI:10.15541/jim20150036
中孔炭的水玻璃模板法制备、结构调控及球形功能化
Facile Preparation, Structural Control and Spheroidization of Mesoporous Car-bons Using Hydrolyzed Water Glass as a Template
摘要
Abstract
Mesoporous carbons (MC) with controlled pore structure were synthesized using hydrolyzed water glass (sodium silicate) as hard template precursor. The mixture of carbon precursor (resorcinol-formaldehyde) sol and silica sol followed by Sol-Gel process generated a polymer/silica dual hydrogels. After ambient drying, carboniza-tion and HF etching, mesoporous carbons with developed mesoporous structure were obtained. The hydrolysis conditions of water glass including hydrolysis temperature and hydrolysis time, and the weight ratio of RF polymer to silica were studied respectively to investigate their effects on the mesoporous structure. The microstructures of the mesoporous carbons were characterized by N2 adsorption, SEM and TEM observations. It was found that as-prepared mesoporous carbons displayed disordered mesoporous channels which replicated from the initial colloidal silica networks. The average mesopore size could be precisely adjusted in the range from 6 nm to 12 nm by tuning the hydrolysis time and hydrolysis temperature, while the total porosity could be controlled by changing the weight ratio of polymer precursor to silica. Furthermore, with the assistant of suspension polymerization and spray drying technologies, spherical mesoporous carbons with millimetre and micrometer-sized particles were drying technologies, spherical mesoporous carbons with millimetre and micrometer-sized particles were produced, respectively. The present work provides a low-cost approach for deliberately controlling the mesoporous structure and spherical morphology to mesoporous carbons that can be extended to many different applications.关键词
中孔炭/水玻璃/结构调控/球形形貌Key words
mesoporous carbon/water glass/structure control/spherical morphology分类
化学化工引用本文复制引用
张川,王际童,李旭,龙东辉,乔文明,凌立成..中孔炭的水玻璃模板法制备、结构调控及球形功能化[J].无机材料学报,2015,(8):848-854,7.基金项目
国家自然科学基金(51302083,51172071,51272077) （51302083,51172071,51272077）
上海市自然科学基金(14ZR1410400) National Science Foundation of China (51302083,51172071,51272077) （14ZR1410400）
Shanghai Municipal Natural Science Foun-dation (14ZR1410400) （14ZR1410400）
