Journal article
Highly Sensitive and Selective Fluoride Ion Sensors Based on Microcantilevers Modified with Hydrogels
Journal of nanoscience and nanotechnology, v 14(9), pp 6632-6637
01 Sep 2014
PMID: 25924309
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We have developed two microcantilever sensors, one modified with chitosan/gelatin hydrogels doped with CH3(OCH2CH2)(3)OTBDPS and another modified with chitosan-OTBDPS/gelatin hydrogels, for the sensitive and selective detection of fluoride ions (F-) in aqueous solution. Upon exposure to F-, the microcantilevers underwent bending deflection due to the cleavage of Si-O bond on reacting with F- in the hydrogel. The results show that the maximum bending deflections are proportional to the concentrations of F-, and the limits of detection are 10(-8) M and 10(-9) M for the two microcantilevers, respectively. Other ions, such as Cl-, Br-, NO3-, H2PO4-, HSO4-, and AcO- have little effect on the deflection of the microcantilevers. The results show that the microcantilever may be used for in situ quantitative detection of F- in an aqueous solution and the mechanism of the bending are discussed.
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Details
- Title
- Highly Sensitive and Selective Fluoride Ion Sensors Based on Microcantilevers Modified with Hydrogels
- Creators
- Rong-Peng Peng - Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R ChinaXiao-Jun Wang - Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R ChinaLing-Bao Xing - Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R ChinaCheng-Juan Wu - Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R ChinaBin Chen - Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R ChinaHai-Feng Ji - Drexel UniversityLi-Zhu Wu - Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R ChinaChen-Ho Tung - Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China
- Publication Details
- Journal of nanoscience and nanotechnology, v 14(9), pp 6632-6637
- Publisher
- Amer Scientific Publishers
- Number of pages
- 6
- Grant note
- 20728506; 91027041 / National Science Foundation of China; National Natural Science Foundation of China (NSFC) 2013CB834505 / Ministry of Science and Technology of China; Ministry of Science and Technology, China Bureau for Basic Research of Chinese Academy of Sciences; Chinese Academy of Sciences
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000335873900018
- Scopus ID
- 2-s2.0-84907212846
- Other Identifier
- 991019330813104721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter