Highly ordered three-dimensional macroporous carbon spheres for determination of heavy metal ions |
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| Authors: | Yuxiao Zhang Jianming Zhang Yang Liu Hui Huang Zhenhui Kang |
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| Affiliation: | 1. Institute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, China;2. College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000, PR China;1. Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran;2. Research and Development Department, Farin Behbood Tashkhis LTD, Tehran, Iran;3. Department of Physics, Le Quy Don Technical University, Ha Noi, Viet Nam;4. Institute of Sensor and Actuator Systems, TU Wien, Gusshausstrasse 27-29, 1040, Vienna, Austria;1. Departamento de Ingeniería Textil y Papelera, EPS de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell s/n, 03801 Alcoy, Spain;2. Department of Molecular Sciences and Nanosystems, University Ca'' Foscari of Venice, Via Torino 155, Venice, Italy |
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| Abstract: | An effective voltammetric method for detection of trace heavy metal ions using chemically modified highly ordered three dimensional macroporous carbon spheres electrode surfaces is described. The highly ordered three dimensional macroporous carbon spheres were prepared by carbonization of glucose in silica crystal bead template, followed by removal of the template. The highly ordered three dimensional macroporous carbon spheres were covalently modified by cysteine, an amino acid with high affinities towards some heavy metals. The materials were characterized by physical adsorption of nitrogen, scanning electron microscopy, and transmission electron microscopy techniques. While the Fourier-transform infrared spectroscopy was used to characterize the functional groups on the surface of carbon spheres. High sensitivity was exhibited when this material was used in electrochemical detection (square wave anodic stripping voltammetry) of heavy metal ions due to the porous structure. And the potential application for simultaneous detection of heavy metal ions was also investigated. |
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