Journal
ELECTROCHIMICA ACTA
Volume 108, Issue -, Pages 491-496Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.07.064
Keywords
H2O2 sensing; TiC/C core/shell nanofiber arrays; Photoelectrochemical; WO3 nanowhiskers
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Funding
- National Natural Science Foundation of China [50902104, 21105077]
- Hong Kong Research Grants Council (RGC) [112510, 112212]
- City University of Hong Kong Applied Research Grant (ARG) [9667066]
- Science Fund of State Key Laboratory of Advanced Design and Manufacturing [31015007]
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A non-enzymatic photoelectrochemical (PEC) biosensing platform for hydrogen peroxide (H2O2) detection based on highly conductive TiC/C core-shell nanofiber electrode decorated with WO3 nanowhiskers (WO3@TiC/C) is described. The electrode exhibits excellent visible-light induced photoelectrochemical activity as well as hydrophilic properties. Good photoelectrochemical (EC) biosensing properties with a H2O2 detection limit of 3 x 10(-9) M (S/N = 3) and sensitivity of 386 mu A mM(-1) cm(-2) are achieved. The stability, selectivity and anti-interference performance toward common inorganic salts and organic acids are also investigated and the results provide insights to non-enzymatic PEC H2O2 sensing. (C) 2013 Elsevier Ltd. All rights reserved.
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