广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2012年
7期
102-105
,共4页
介孔二氧化硅%吸附%铀酰离子%功能化
介孔二氧化硅%吸附%鈾酰離子%功能化
개공이양화규%흡부%유선리자%공능화
mesoporous silica%sorption%uranyl%functional
本研究将1-[3-(三甲氧基硅烷)丙基]脲基团嫁接在介孔材料SBA-15上,在15℃下实验研究了pH值、离子强度、时间对该材料对铀吸附的影响。介孔材料经过XRD,N2吸附脱附进行表征。结果表明,该材料对UO22+的吸附受pH值、离子强度影响较大,材料对铀酰离子吸附模型符合Langmuir模型,吸附容量达78 mg/mL。
本研究將1-[3-(三甲氧基硅烷)丙基]脲基糰嫁接在介孔材料SBA-15上,在15℃下實驗研究瞭pH值、離子彊度、時間對該材料對鈾吸附的影響。介孔材料經過XRD,N2吸附脫附進行錶徵。結果錶明,該材料對UO22+的吸附受pH值、離子彊度影響較大,材料對鈾酰離子吸附模型符閤Langmuir模型,吸附容量達78 mg/mL。
본연구장1-[3-(삼갑양기규완)병기]뇨기단가접재개공재료SBA-15상,재15℃하실험연구료pH치、리자강도、시간대해재료대유흡부적영향。개공재료경과XRD,N2흡부탈부진행표정。결과표명,해재료대UO22+적흡부수pH치、리자강도영향교대,재료대유선리자흡부모형부합Langmuir모형,흡부용량체78 mg/mL。
UO_2~(2+) sorption to the(1-[3-(trimethoxysilyl)propyl]urea(UPTS) grafted mesoporous silica SBA-15 materials was carried out at 15 ℃.The materials was characterized by using powder X-ray diffraction(XRD) and N2-BET methods in detail.Effects of UO2+2 solution concentration,ionic strength,and pH on UO2+2 sorption to UPTS-SBA-15 were also investigated.The results showed the sorption was strongly dependent on pH values and ionic strength,and the adsorption can be described by the Langmuir equation and the largest theoretical adsorption capacity reached 78 mg/ml.