Journal
MICROCHIMICA ACTA
Volume 184, Issue 8, Pages 2759-2766Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-017-2260-x
Keywords
Green material; Bacterial fermentation; Freeze drying; Carbon materials; Immobilization; Scanning electron microscopy; X-ray photoelectron spectroscopy; Electroanalysis; Heavy metals; Water analysis
Categories
Funding
- National Natural Science Foundation of China [21505154, 21677171]
- Xinjiang International Science and Technology Cooperation Project [20166010]
- 1000-Talent Program (Recruitment Program of Global Expert, In Chinese: Qian-Ren-Ji-Hua)
- Special Scientific Research Fund of Agricultural Public Welfare Profession of China [21403014-1]
- Artificial Leaf Project Umea (KAMP
- A Wallenberg foundation)
- Swedish Research Council [2013-5252]
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The authors describe the preparation of carbon nanofibers (CNFs) with a three-dimensional network structure by one-step carbonization of bacterial cellulose at 800 degrees C. The 3D CNFs wrapped with Nafion polymer were cast on a glassy carbon electrode (GCE) which then enables sensitive detection of Cd(II) and Pb(II). Under optimized conditions and at typical stripping peaks of around -0.80 and -0.55 V (vs Ag/AgCl), the electrode exhibits high sensitivity and a wide analytical range of 2-100 mu g.L-1 for both Cd(II) and Pb(II). The detection limits are 0.38 mu g.L-1 for Cd(II) and 0.33 mu g.L-1 for Pb(II), respectively. The modified GCE was successfully employed to the determination of trace amounts of Cd(II) and Pb(II) in both tap water and waste water.
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