磺化酞菁铝修饰氨基功能化磁性材料及其光敏化降解双酚A
Sulfonated Aluminum Phthalocyanine Modified Amino Functionalized Magnetic Materials for Photosensitized Degradation of Bisphenol A
作者单位E-mail
郭冬菁 浙江大学宁波理工学院, 宁波 315100  
胡美琴 浙江大学宁波理工学院, 宁波 315100 mqhu@nit.zju.edu.cn 
沈昊宇 浙江大学宁波理工学院, 宁波 315100  
张建 中国科学院宁波材料技术与工程研究所, 宁波 315201  
孙洁 中国科学院宁波材料技术与工程研究所, 宁波 315201  
许宜铭 浙江大学化学系, 杭州 310027  
摘要: 采用溶剂热法制备氨基功能化Fe3O4磁性材料(NH2@nFe3O4),通过浸渍法将磺化酞菁铝(AlPcS)负载于NH2@nFe3O4。材料的傅立叶红外、漫反射、X射线衍射、扫描电镜、透射电镜、振动磁强计等表征表明:AlPcS主要通过静电作用与NH2@nFe3O4结合,AlPcS-NH2@nFe3O4平均粒径为127 nm,饱和磁化强度为75.3 emu·g-1。在可见光和空气作用下,该功能化磁性材料对降解弱碱性水溶液中环境内分泌干扰物双酚A(BPA)具有较高的光敏化活性。随着AlPcS负载量的增加活性呈先升高后下降的趋势,负载量为3.4%(质量分数)的复合材料性能最佳,反应60 min后,20.0 mg·L-1 BPA降解率为96%;循环使用10次,BPA降解率仍保持93%以上。通过NaN3猝灭实验探讨了反应机理,证实1O2是光敏化过程中的主要活性物种。
关键词: 磁载光催化剂  酞菁  双酚A  可见光  降解
基金项目: 国家自然科学基金(No.51608479)和宁波市自然科学基金(No.2018A610206)资助项目。
Abstract: Amino-functionalized Fe3O4 magnetic material (NH2@nFe3O4) was prepared via a solvothermal method, followed by impregnation with Al(Ⅲ) phthalocyanine sulfonate (AlPcS). The characterization of material with Fourier transform infrared spectroscopy, diffuse reflectance, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and vibrating magnetometer show that AlPcS mainly combines with NH2@nFe3O4 through electrostatic interaction. The average particle size and saturation magnetization of AlPcS-NH2@nFe3O4 were 127 nm, and 75.3 emu·g-1, respectively. Under visible light and air, this functionalized magnetic material has high photosensitization activity for degradation of bisphenol A (BPA), an environmental endocrine disruptor in weak alkaline aqueous solution. The photosensitization activity of composite changed with the content of AlPcS, and 3.4%(w/w) AlPcS-NH2@nFe3O4 showed the best photosensitization activity. After 60 min of reaction, the degradation rate of 20.0 mg·L-1 BPA was up to 96%, and it still remained above 93% after ten-repeated use. The reaction mechanism was discussed by NaN3 quenching experiment. It is confirmed that 1O2 is the main active species in the photosensitization process.
Keywords: magnetic photocatalyst  phthalocyanine  bisphenol A  visible light  degradation
投稿时间:2019-03-17 修订日期:2019-05-10
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郭冬菁,胡美琴,沈昊宇,张建,孙洁,许宜铭.磺化酞菁铝修饰氨基功能化磁性材料及其光敏化降解双酚A[J].无机化学学报,2019,35(8):1379-1386.
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