First the cross-linking agent glyoxal(GL) was selected,homogeneous mesoporous carbon was prepared by low concentration hydrothermal synthesis method which using chitosan-oligosaccharide(COS) as C—N source,F127 as soft template.The influence of GL amount,the mass ratio of F127 to COS and the order of adding raw materials on pore structure of porous carbon was investigated by using TG,BET,XRD,SEM and XPS.The results shown that nitrogen was successfully doped in-situ into mesoporous carbon materials,and its content was 4.84 % and the uniform carbon was prepared as follows: the amount of GL was 2mL,the value of F127/COS was 0.333,and the carbon source was dropped into the template,the pore size was mainly distributed between 5～10nm,the average pore size of mesoporous carbons was about 7.6nm.The specific surface area and mesopore volume were 473m2/g and 0.37cm3/g.The addition of GL improved the pore structure of the materials.
Liao Wenqi, Wang Meng, Shi Lianjun, Qin Hong, Pan Hongyan, Lin Qian
. Preparation and characterization of mesoporous carbon prepared by GL/COS[J]. New Chemical Materials, 2020
, 48(12)
: 111
-115
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.12.027
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