文献类型：期刊文献

英文题名：In Situ Growth of Ultrasmall Nanochannels in Porous Anodized Aluminum Membrane and Applied in Detection of Lead Ion

作者：Mo, Rijian[1,2,3];He, Lei[1,2,3];Zhou, Chunxia[1,2,3];Qian, Zhong-Ji[1,2,3];Hong, Pengzhi[1,2,3];Sun, Shengli[1,2,3];Wang, Zhe[4];Wang, Yi[5];Li, Chengyong[1,2,3]

机构：[1]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518108, Peoples R China;[2]Guangdong Ocean Univ, Sch Chem & Environm, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524088, Peoples R China;[4]Shenzhen Univ, Food Sci & Proc Res Ctr, Shenzhen 518055, Peoples R China;[5]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Hum, Kowloon, Hong Kong, Peoples R China

年份：2019

卷号：91

期号：13

起止页码：8184

外文期刊名：ANALYTICAL CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000474477900030)、、EI(收录号：20192507069073)、Scopus(收录号：2-s2.0-85067360815)、WOS

基金：This research was funded by the National Natural Science Foundation of China (21874029), Guangdong Yangfan Program (201635018), Guangdong Special Support Program (2017TQ04N706), Science and Technology Planning Project of Guangdong Province (2016A020210114), Technology Planning Project of Zhanjiang City (2018A02014, 2016C01002), Science and Technology Planning Project of Shenzhen City (JCYJ20170818111719650), Industrial Development Special Funds of Dapeng New Area (KY20170209, KY20180202), Graduate Education Innovation Program of Guangdong Ocean University (201733), and Training Programs of Innovation and Entrepreneurship for Undergraduates (qhjhkj201822).

语种：英文

外文关键词：Composite membranes - Zinc compounds - Microporous materials - Electric fields - Ions - Aluminum - Chemical detection

外文摘要：The transport of ions in nanochannels has received considerable interest owing to the unique transport properties and potential applications. In this study, ultrasmall nanochannels (0.8-1.2 nm) were fabricated in porous anodized aluminum (PAA) membrane in situ growth. 2-Methylimidazole and zinc nitrate were used as the reaction precursor solkution, and then zeolitic imidazolate framework (ZIF-8) nanoparticles were sufficiently filled in PAA nanochannels to form a ZIF-8/PAA nanochannels composite membrane. Because ZIF-8 is a microporous material and has a strong ability to adsorb heavy metals, the composite membrane was used as a biosensor to detect lead ion (Pb2+) by the coordination interaction between Pb(2+ )and nitrogen atoms. The detection limit reached to 0.03 nM due to the enrichment of nanochannels under electric field. The sensor has a good linear range for Pb' from 10 nM to 10 mu M.