西南师范大学学报（自然科学版）
西南師範大學學報（自然科學版）
서남사범대학학보（자연과학판）
JOURNAL OF SOUTHWEST CHINA NORMAL UNIVERSITY
2014年
9期
30-36
,共7页
多壁碳纳米管%海藻酸钠%Cu2+%吸附
多壁碳納米管%海藻痠鈉%Cu2+%吸附
다벽탄납미관%해조산납%Cu2+%흡부
multi-walled carbon nanotubes%sodiumalginate%copperion%adsorption
以1乙基3（3二甲基氨基丙基）碳化二亚胺（EDC ）为相偶联剂，通过海藻酸钠（SAL ）对碳纳米管（CNTS）进行修饰和改性，制备海藻酸钠碳纳米管凝胶，用于处理含Cu2＋废水．考察了pH值、吸附时间、吸附剂量等因素对C u2＋吸附性能的影响，并进一步探讨了吸附动力学及吸附等温线．结果表明，利用海藻酸钠对多壁碳纳米管进行改性，提高了分散性、比表面积和孔径，当p H值为5.8时，吸附率随着吸附时间的增长而增大，80 min内达到吸附平衡，吸附过程符合准一级和准二吸附动力学模型，吸附等温线符合 Freundlich和Langmuir方程，由Langmuir模型计算可知改性碳纳米管对Cu2＋的最大吸附量为87.68 mg/g ．
以1乙基3（3二甲基氨基丙基）碳化二亞胺（EDC ）為相偶聯劑，通過海藻痠鈉（SAL ）對碳納米管（CNTS）進行脩飾和改性，製備海藻痠鈉碳納米管凝膠，用于處理含Cu2＋廢水．攷察瞭pH值、吸附時間、吸附劑量等因素對C u2＋吸附性能的影響，併進一步探討瞭吸附動力學及吸附等溫線．結果錶明，利用海藻痠鈉對多壁碳納米管進行改性，提高瞭分散性、比錶麵積和孔徑，噹p H值為5.8時，吸附率隨著吸附時間的增長而增大，80 min內達到吸附平衡，吸附過程符閤準一級和準二吸附動力學模型，吸附等溫線符閤 Freundlich和Langmuir方程，由Langmuir模型計算可知改性碳納米管對Cu2＋的最大吸附量為87.68 mg/g ．
이1을기3（3이갑기안기병기）탄화이아알（EDC ）위상우련제，통과해조산납（SAL ）대탄납미관（CNTS）진행수식화개성，제비해조산납탄납미관응효，용우처리함Cu2＋폐수．고찰료pH치、흡부시간、흡부제량등인소대C u2＋흡부성능적영향，병진일보탐토료흡부동역학급흡부등온선．결과표명，이용해조산납대다벽탄납미관진행개성，제고료분산성、비표면적화공경，당p H치위5.8시，흡부솔수착흡부시간적증장이증대，80 min내체도흡부평형，흡부과정부합준일급화준이흡부동역학모형，흡부등온선부합 Freundlich화Langmuir방정，유Langmuir모형계산가지개성탄납미관대Cu2＋적최대흡부량위87.68 mg/g ．
With 1-ethyl-3 (3-dimethylamino-propyl) carbodiimide (EDC) as a coupling agent ,surface prop-erties have been improved by sodium alginate in order to preparate gel of SAL-MWCNT-COOH that was used to adsorb trace Cu2+-containing waste water .The effects of pH ,adsorption time and absorbent dos-age on adsorption of Cu2+ were investigated .The results show that the modification of multi-walled carbon nanotubes by means of SAL can increase dispersion ,specific surface area and aperture .When pH is 5 .8 and the adsorption attains equilibrium in 80min ,the adsorption kinetics are represented by pseudo first-and second-order models ,and the adsorption of Cu2+ by SAL-MWCNT-COOH met the Freundlich and Lang-muir isohterm equation .Based on the Langmuirmodel ,the maximum adsorption capacity of SAL-MWC-NT-COOH was 87 .68 mg/g .
