环境科学与管理
環境科學與管理
배경과학여관리
ENVIRONMENTAL SCIENCE AND MANAGEMENT
2012年
5期
94-96
,共3页
活性炭纤维%改性%含氧酸性官能团%铜离子
活性炭纖維%改性%含氧痠性官能糰%銅離子
활성탄섬유%개성%함양산성관능단%동리자
activated carbon fiber%modification%oxygenous functional group%copperion
采用硝酸、磷酸、磷酸二氢铵和硝酸铜水溶液对聚丙烯腈基活性炭纤维（PAN-ACF）进行浸渍改性,制备了4种改性活性炭纤维（ACF1-ACF4）。测定了改性活性炭纤维表面含氧酸性官能团、零电荷点、比表面积和孔容,评价了改性纤维对铜离子的吸附性能。结果表明改性后活性炭纤维表面含氧酸性官能团明显增加,其零电荷点相应降低,比表面积和微孔孔容增大。改性活性炭纤维对Cu^2＋的吸附容量显著提高,其中ACF2吸附性能最佳,其吸附容量从改性前的4.80 mg/g增加到17.32 mg/g,提高了3.6倍。
採用硝痠、燐痠、燐痠二氫銨和硝痠銅水溶液對聚丙烯腈基活性炭纖維（PAN-ACF）進行浸漬改性,製備瞭4種改性活性炭纖維（ACF1-ACF4）。測定瞭改性活性炭纖維錶麵含氧痠性官能糰、零電荷點、比錶麵積和孔容,評價瞭改性纖維對銅離子的吸附性能。結果錶明改性後活性炭纖維錶麵含氧痠性官能糰明顯增加,其零電荷點相應降低,比錶麵積和微孔孔容增大。改性活性炭纖維對Cu^2＋的吸附容量顯著提高,其中ACF2吸附性能最佳,其吸附容量從改性前的4.80 mg/g增加到17.32 mg/g,提高瞭3.6倍。
채용초산、린산、린산이경안화초산동수용액대취병희정기활성탄섬유（PAN-ACF）진행침지개성,제비료4충개성활성탄섬유（ACF1-ACF4）。측정료개성활성탄섬유표면함양산성관능단、령전하점、비표면적화공용,평개료개성섬유대동리자적흡부성능。결과표명개성후활성탄섬유표면함양산성관능단명현증가,기령전하점상응강저,비표면적화미공공용증대。개성활성탄섬유대Cu^2＋적흡부용량현저제고,기중ACF2흡부성능최가,기흡부용량종개성전적4.80 mg/g증가도17.32 mg/g,제고료3.6배。
The polyacrylonitrile-based activated carbon fibers（PAN-ACF）were immersed by nitric acid,phosphoric acid,ammonium dihydrogen phosphate and copper nitrate solutions.The surface acidic oxygenous functional groups,pHpzc,specific surface area and pore volume of the modified fibers were characterized using Boehm titration,acid-base titration and nitrogen adsorption methods.The adsorption of Cu^2＋ on modified ACF was evaluated.The results show that the surface acidic oxygenous functional groups of the modified fiber increase obviously,consistent with the decrease of pHpzc.The specific surface area and the microvolume of the fiber mentioned above rises.The adsorption capacity of Cu^2＋ on the modified ACF is higher than that of the pristine fiber.Among the modified fibers,the ACF2 fiber owns the highest adsorption towards Cu^2＋.The adsorption capacity of ACF2 increases from 4.80 to17.32 mg/g,which is 3.6 times as that of the pristine fiber.
