文章摘要
高磊,刘甜甜,袁新华.纳米镍分子印迹催化剂的制备及选择性催化p-NBA[J].精细化工,2019,36(8):
纳米镍分子印迹催化剂的制备及选择性催化p-NBA
Preparation of Ni nanoparticle molecularly imprinted polymer and selective catalyzing p-NBA
投稿时间:2018-11-11  修订日期:2019-02-23
DOI:
中文关键词: 分子印迹聚合物  Ni纳米粒子  对硝基苯甲醇  氧化  选择性
英文关键词: Molecularly imprinted polymer  Ni nanoparticle  p-nitrobenzyl alcohol  oxidation  selectivity
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
高磊 江苏大学材料学院 1287139668@qq.com 
刘甜甜 江苏大学 材料科学与工程学院  
袁新华 江苏大学 材料科学与工程学院 yuanxh@ujs.edu.cn 
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中文摘要:
      以对硝基苯甲醇(p-NBA)和六水合硝酸镍的络合物为模板分子,丙烯酰胺(AM)为功能单体,二甲基丙烯酸乙二醇酯(EGDMA)为交联剂,采用本体聚合设计制备了镍纳米粒子分子印迹聚合物(Ni-MIP),通过FTIR、UV-Vis、SEM和TEM等手段进行了表征。以非分子印迹聚合物Ni-NIP和空白非印迹聚合物NIP为对照,考察了Ni-MIP对p-NBA的催化活性和选择性。结果表明:在水溶剂中,过氧化氢(质量分数30%)氧化p-NBA的反应中,Ni-MIP为催化剂,反应1h时p-NBA转化率72%,高于Ni-NIP(64%),NIP没有催化效果;对p-NBA结构类似物邻硝基苯甲醇(o-NBA)的反应中,Ni-MIP的转化率仅为24%,明显低于Ni-NIP的转化率(64%),说明Ni-MIP催化剂具有与底物分子p-NBA相匹配的印迹空腔位点,可实现特异性识别催化。
英文摘要:
      With complex of p-nitrobenzyl alcohol (p-NBA) and nickel nitrate hexahydrate as template molecule, acrylamide (AM) as functional monomer and ethylene glycol dimethacrylate (EGDMA) as crosslinking agent, the Ni nanoparticle molecularly imprinted polymer (Ni-MIP) was prepared by bulk polymerization. The prepared Ni-MIP was characterized by FTIR, UV-Vis, SEM and TEM. Using non-molecularly imprinted polymers of Ni-NIP and NIP as comparison samples, the catalytic activity and selectivity of Ni-MIP for p-NBA were investigated. The results show that in the oxidation reaction of p-NBA with water as solvent and H2O2 as oxidant, the conversion of p-NBA reaches 72% after 1 h with Ni-MIP as catalyst. The conversion rate of p-NBA is 64% with Ni-NIP as catalyst, and NIP has no catalytic effect. The catalytic efficiency of Ni-MIP is 24% for p-NBA structural analogue of o-nitrobenzyl alcohol (o-NBA), which is much lower than that of Ni-NIP. It is indicates that the Ni-MIP catalyst has imprinted cavity matching the substrate molecule p-NBA, which can realize specific recognition catalysis.
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