贵金属
貴金屬
귀금속
PRECIOUS METALS
2013年
2期
40-43,47
,共5页
物理化恘%竹炭%化恘表面处理%Au(III)%吸附条件%吸附性能
物理化恘%竹炭%化恘錶麵處理%Au(III)%吸附條件%吸附性能
물이화규%죽탄%화규표면처리%Au(III)%흡부조건%흡부성능
physical chemistry%bamboo-charcoal%chemical surface treatment%Au(III)%adsorption conditions%adsorption performance
对普通竹炭进行了表面化恘处理，并研究了此竹炭对Au(III)的吸附性能。实验结果表明：改性后竹炭对Au(III)的吸附性能有明显的提高，且吸附过程从以物理吸附为主转化为以化恘吸附为主。如果条件控制得当，吸附率可达97%以上，说明处理后的竹炭可以有效回收水相中的Au(III)。红外图谱和元素分析对改性前后的竹炭表征的结果表明：含氧基团和含氮基团的含量有明显的增加，且含氧基与含氮基与Au(III)配位成键。
對普通竹炭進行瞭錶麵化恘處理，併研究瞭此竹炭對Au(III)的吸附性能。實驗結果錶明：改性後竹炭對Au(III)的吸附性能有明顯的提高，且吸附過程從以物理吸附為主轉化為以化恘吸附為主。如果條件控製得噹，吸附率可達97%以上，說明處理後的竹炭可以有效迴收水相中的Au(III)。紅外圖譜和元素分析對改性前後的竹炭錶徵的結果錶明：含氧基糰和含氮基糰的含量有明顯的增加，且含氧基與含氮基與Au(III)配位成鍵。
대보통죽탄진행료표면화규처리，병연구료차죽탄대Au(III)적흡부성능。실험결과표명：개성후죽탄대Au(III)적흡부성능유명현적제고，차흡부과정종이물리흡부위주전화위이화규흡부위주。여과조건공제득당，흡부솔가체97%이상，설명처리후적죽탄가이유효회수수상중적Au(III)。홍외도보화원소분석대개성전후적죽탄표정적결과표명：함양기단화함담기단적함량유명현적증가，차함양기여함담기여Au(III)배위성건。
Surface of ordinary bamboo-charcoal was pretreated with chemical methods, and the adsorption performance of the bamboo-charcoal for Au(III) was investigated. Results showed that the adsorption capacity of the modified bamboo-charcoal for Au(III) was elevated remarkably. The adsorption process was changed from the physical adsorption to the chemical adsorption. If the condition is properly controlled, The adsorption rate could reach more than 97%. Therefore, the bamboo-charcoal can effectively be used to recycle Au(III) in aqueous. Fourier transform infrared (FT-IR) spectrometer, element analysis demonstrated that the contents of O-containing groups and N-containing groups on the bamboo-charcoal surface were increased. The sorption mechanism showed that O-containing groups and N-containing groups on the bamboo-charcoal were combined with Au (III) to form coordination bond.
