期刊论文

Preparation of Functionalized m-carboxyphenyl Azo Calix[4]arene Symmetrical Sulfide Derivative and Its Adsorption Behavior towards U(Ⅵ)

中文

原子能科学技术

1000-6931

2020

54

1

23-30

10.7538/yzk.2019.youxian.0069

51574152:国家自然科学基金 11705085:国家自然科学基金 2017JJ2232:湖南省自然科学基金

本校为第一机构

采用间氨基苯甲酸为原料,经重氮化-偶联反应对杯[4]芳烃进行上沿改性合成了间羧基苯偶氮基杯[4]芳烃衍生物,再通过取代反应对间羧基苯偶氮基杯[4]芳烃衍生物进行下沿修饰,制备出一种新型材料,即间羧基苯偶氮基杯[4]芳烃对称硫醚衍生物,并采用FT-IR和~1H-NMR对其进行结构表征。将该新型材料作为吸附剂用于吸附低浓度含铀水溶液中的铀,考察了溶液pH值、吸附剂用量、铀初始浓度、吸附时间、吸附体系温度等因素对其吸附性能的影响。结果表明:在铀初始浓度为10 mg/L、pH=4、温度为25℃、吸附剂用量为10 mg、吸附平衡时间为4 h时,间羧基苯偶氮基杯[4]芳烃对称硫醚衍生物对U(Ⅵ)的吸附效果最佳;其吸附过...

Firstly, using m-aminobenzoic acid as raw material, m-carboxyphenyl azo calix[4]arene derivative was synthesized by upper-rim modification of calix[4]arene through diazotization-coupling reaction. Then, a new material called m-carboxyphenyl azo calix[4]arene symmetrical sulfide derivative was synthesized by substitution reaction. The new material was characterized by FT-IR and ~1H-NMR. It was used to adsorb U(Ⅵ) of the low concentration uranium-containing aqueous solution. The effects of initial pH, dosage of adsorbent, initial concentration o...