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Title: Highly ordered three-dimensional macroporous carbon spheres for determination of heavy metal ions

Abstract

Highlights: Black-Right-Pointing-Pointer Highly ordered three dimensional macroporous carbon spheres (MPCSs) were prepared. Black-Right-Pointing-Pointer MPCS was covalently modified by cysteine (MPCS-CO-Cys). Black-Right-Pointing-Pointer MPCS-CO-Cys was first time used in electrochemical detection of heavy metal ions. Black-Right-Pointing-Pointer Heavy metal ions such as Pb{sup 2+} and Cd{sup 2+} can be simultaneously determined. -- 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.

Authors:
;  [1];  [1];  [1];  [1]
  1. Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123 (China)
Publication Date:
OSTI Identifier:
22212497
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 47; Journal Issue: 4; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ADSORPTION; CADMIUM IONS; CARBON; CARBON MONOXIDE; CRYSTALS; CYSTEINE; DETECTION; FOURIER TRANSFORM SPECTROMETERS; HEAVY METALS; LEAD IONS; NANOSTRUCTURES; POLAROGRAPHY; SCANNING ELECTRON MICROSCOPY; SENSITIVITY; SILICA; SURFACES; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Zhang, Yuxiao, Zhang, Jianming, Liu, Yang, E-mail: yangl@suda.edu.cn, Huang, Hui, and Kang, Zhenhui, E-mail: zhkang@suda.edu.cn. Highly ordered three-dimensional macroporous carbon spheres for determination of heavy metal ions. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2011.12.051.
Zhang, Yuxiao, Zhang, Jianming, Liu, Yang, E-mail: yangl@suda.edu.cn, Huang, Hui, & Kang, Zhenhui, E-mail: zhkang@suda.edu.cn. Highly ordered three-dimensional macroporous carbon spheres for determination of heavy metal ions. United States. doi:10.1016/J.MATERRESBULL.2011.12.051.
Zhang, Yuxiao, Zhang, Jianming, Liu, Yang, E-mail: yangl@suda.edu.cn, Huang, Hui, and Kang, Zhenhui, E-mail: zhkang@suda.edu.cn. 2012. "Highly ordered three-dimensional macroporous carbon spheres for determination of heavy metal ions". United States. doi:10.1016/J.MATERRESBULL.2011.12.051.
@article{osti_22212497,
title = {Highly ordered three-dimensional macroporous carbon spheres for determination of heavy metal ions},
author = {Zhang, Yuxiao and Zhang, Jianming and Liu, Yang, E-mail: yangl@suda.edu.cn and Huang, Hui and Kang, Zhenhui, E-mail: zhkang@suda.edu.cn},
abstractNote = {Highlights: Black-Right-Pointing-Pointer Highly ordered three dimensional macroporous carbon spheres (MPCSs) were prepared. Black-Right-Pointing-Pointer MPCS was covalently modified by cysteine (MPCS-CO-Cys). Black-Right-Pointing-Pointer MPCS-CO-Cys was first time used in electrochemical detection of heavy metal ions. Black-Right-Pointing-Pointer Heavy metal ions such as Pb{sup 2+} and Cd{sup 2+} can be simultaneously determined. -- 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.},
doi = {10.1016/J.MATERRESBULL.2011.12.051},
journal = {Materials Research Bulletin},
number = 4,
volume = 47,
place = {United States},
year = 2012,
month = 4
}
  • Well-defined macroporous ceramics consisting of SiO{sub 2}, TiO{sub 2} and ZrO{sub 2} have been fabricated via a template-assisted colloidal processing technique. Close-packed polymer spheres were first prepared as a template using centrifugation or gravitational sedimentation, followed by infiltration with alkoxide precursors. The centrifugation should be preferred because it is a less time-consuming process and the materials are better ordered. The removal of the template beads was achieved by calcination of the organic-inorganic hybrids at appropriate temperatures, yielding well-ordered macroporous ceramics. The arrangement of the porous structures could be changing the preparation of the packed polymer templates. Some novel arrangements ofmore » macropores were obtained in these macroporous ceramics: a simple square-packed arrangement for SiO{sub 2}, the coexistence of hexagonal close-packed and simple close-packed arrangements for TiO{sub 2}, and face-centered cubic packed arrangement for ZrO{sub 2}. The resulting highly structured ceramics could have applications in areas ranging from quantum electronics to photocatalysis and battery materials.« less
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