摘要
通过硝酸+微波加热和氨水吸附的方法对普通竹炭进行表面改性处理,运用红外图谱和元素分析对改性前后的竹炭进行表征。结果表明:含氧基团和含氮基团的含量明显增加。吸附试验结果表明:改性后竹炭对金属离子的吸附性能明显提高,其中,汞(Ⅱ)的吸附量提高25%以上,钯(Ⅱ)的吸附量提高32%以上,且吸附过程从以物理吸附为主转化为以化学吸附为主。
Surface of ordinary bamboo-charcoal was pretreated with nitric acid and microwave heating,ammonia.Fourier transform infrared（FTIR）spectrometer,elemental analysis measurements demonstrate that the contents of O-containing groups and N-containing groups on the bamboo-charcoal surface increase via HNO3 and NH3·H2O treatment.Results showed of adsorption that adsorption capacity of the modified bamboo-charcoal for metal ions were elevated remarkably.Among them,the mercury（Ⅱ）adsorption capacity increased by 25%,and palladium（Ⅱ）adsorption capacity increased by 32% or more.And the adsorption process was changed from the physical adsorption to the chemical adsorption.This study will expanded the applications of bamboo charcoal,and become into functional adsorption material.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2012年第10期136-139,共4页
Scientia Silvae Sinicae
基金
浙江省科技厅项目(2010C31G2260008)
关键词
竹炭表面改性
表面基团表征
金属离子吸附值
吸附类型
surface modification of bamboo-charcoal
surface groups characterization
adsorption value of metal ion
adsorption type
