表面修饰处理对生物炭及其CO2吸附性能的影响.doc


Influence of different surface modification treatments on
biomass based carbons and their effects on adsorption of
5
10
15
20
carbon dioxide
TAO Zhiwei, SONG Min, WU Jian, CHEN Yuxia, CHEN Sheng, YANG Keyun**
(School of Energy and Environment, Southeast University, Nanjing 210096)
Abstract: Surface modification of biomass based carbon with nitrogen containing functional groups is
performed using the different modification method, including the thermal and chemical methods. We
also investigate the effect of the different reaction parameters on their pore structure using the
Brunauer-Emmett-Teller (BET) surface area and adsorption performance based on methylene blue
(MB) value. Fourier transforms infrared spectroscopy (FT-IR) methods are performed to confirm the
presence of N-containing groups. Based on above results, parison effect of different
modification methods on physico-chemical propriety and adsorption properties of biomass based
carbon materials are carried out. In conclusion, all modification methods could enhance CO 2 adsorption
capability. However, the carbon materials treated with ammonia using thermal method show the best
performance.
Key words: Activated carbon; Functional groups; Porosity; Surface modification; CO2 adsorption
0 Introduction
There has been an emphasis on carbon dioxide removal, which is environmentally significant
for mini