Journal article
Ultrasensitive Detection of Cu2+ Using a Microcantilever Sensor Modified with L-Cysteine Self-Assembled Monolayer
Applied biochemistry and biotechnology, v 183(2), pp 555-565
01 Oct 2017
PMID: 28540518
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A microcantilever was modified with a self-assembled monolayer (SAM) of L-cysteine for the sensitively and selectively response to Cu(II) ions in aqueous solution. The microcantilever undergoes bending due to sorption of Cu(II) ions. The interaction of Cu(II) ions with the L-cysteine on the cantilever is diffusion controlled and does not follow a simple Langmuir adsorption model. A concentration of 10(-10) M Cu(II) was detected in a fluid cell using this technology. Other cations, such as Ni2+, Zn2+, Pb2+, Cd2+, Ca2+, K+, and Na+, did not respond with a significant deflection, indicating that this L-cysteine-modified cantilever responded selectively and sensitively to Cu(II).
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Details
- Title
- Ultrasensitive Detection of Cu2+ Using a Microcantilever Sensor Modified with L-Cysteine Self-Assembled Monolayer
- Creators
- Xiaohe Xu - Drexel UniversityNa Zhang - Drexel UniversityGilbert M. Brown - Oak Ridge National LaboratoryThomas G. Thundat - University of AlbertaHai-Feng Ji - Drexel University
- Publication Details
- Applied biochemistry and biotechnology, v 183(2), pp 555-565
- Publisher
- Humana Press Inc
- Number of pages
- 11
- Grant note
- DE-AC05-00OR22725 / Environmental Remediation Sciences Division, Office of Biological and Environmental Research, Environmental Management Science Program, US Department of Energy Oak Ridge National Laboratory; United States Department of Energy (DOE) ECS-0428263 / NSF Sensor and Sensor Network
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000412436400007
- Scopus ID
- 2-s2.0-85019611666
- Other Identifier
- 991019330803404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Biochemistry & Molecular Biology
- Biotechnology & Applied Microbiology