Highly-Efficient Sulfonated UiO-66(Zr) Optical Fiber for Rapid Detection of Trace Levels of Pb2+

被引:18
|
作者
Nazari, Marziyeh [1 ,2 ]
Amini, Abbas [3 ,4 ]
Eden, Nathan T. [5 ]
Duke, Mikel C. [2 ]
Cheng, Chun [6 ]
Hill, Matthew R. [5 ,7 ]
机构
[1] Australian Coll Kuwait, Sch Engn, Dept Math & Phys, Safat 13015, Kuwait
[2] Victoria Univ, Inst Sustainable Ind & Livable Cities ISILC, Melbourne, Vic 8001, Australia
[3] Australian Coll Kuwait, Sch Engn, Dept Mech Engn, Safat 13015, Kuwait
[4] Western Sydney Univ, Ctr Infrastruct Engn, Penrith, NSW 2751, Australia
[5] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia
[6] Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
[7] CSIRO Mfg, Clayton, Vic 3168, Australia
关键词
nano-bio detectors and sensors; nano-bio systems; aqueous quality; nanobiotechnology; optical fiber vesicle; sulfonated MOFs; METAL-ORGANIC FRAMEWORKS; BLOOD LEAD LEVELS; DRINKING-WATER; REMOVAL; NEUROTOXICITY; COMPOSITES; IONS; MOFS;
D O I
10.3390/ijms22116053
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Lead detection for biological environments, aqueous resources, and medicinal compounds, rely mainly on either utilizing bulky lab equipment such as ICP-OES or ready-made sensors, which are based on colorimetry with some limitations including selectivity and low interference. Remote, rapid and efficient detection of heavy metals in aqueous solutions at ppm and sub-ppm levels have faced significant challenges that requires novel compounds with such ability. Here, a UiO-66(Zr) metal-organic framework (MOF) functionalized with SO3H group (SO3H-UiO-66(Zr)) is deposited on the end-face of an optical fiber to detect lead cations (Pb2+) in water at 25.2, 43.5 and 64.0 ppm levels. The SO3H-UiO-66(Zr) system provides a Fabry-Perot sensor by which the lead ions are detected rapidly (milliseconds) at 25.2 ppm aqueous solution reflecting in the wavelength shifts in interference spectrum. The proposed removal mechanism is based on the adsorption of [Pb(OH2)(6)](2+) in water on SO3H-UiO-66(Zr) due to a strong affinity between functionalized MOF and lead. This is the first work that advances a multi-purpose optical fiber-coated functional MOF as an on-site remote chemical sensor for rapid detection of lead cations at extremely low concentrations in an aqueous system.
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页数:30
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