Sensitive Electrochemical Detection of Pb(II) and H 2 O 2  via a Dual‐functional Sn‐doped Defective Bi 2 S 3  Microspheres | Zendy

Fu Yanqiu | Zendy; Li Jinrui | Zendy; Jin Wei | Zendy; Liu Zhonggang | Zendy

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Sensitive Electrochemical Detection of Pb(II) and H 2 O 2 via a Dual‐functional Sn‐doped Defective Bi 2 S 3 Microspheres

Author(s) -

Fu Yanqiu,

Li Jinrui,

Jin Wei,

Liu Zhonggang

Publication year - 2021

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.202060498

Subject(s) - detection limit , electrochemistry , materials science , analytical chemistry (journal) , doping , microsphere , sensitivity (control systems) , electrochemical gas sensor , nuclear chemistry , optoelectronics , chemistry , electrode , chemical engineering , chromatography , electronic engineering , engineering

In this work, a dual‐functional electrochemical sensor has been proposed based on Sn‐doped defective Bi 2 S 3 (TDDB) microspheres, which exhibited the excellent electrochemical performance on Pb(II) and H 2 O 2 detection. The TDDB offered a satisfied detection limit of 8.0 nM towards Pb(II) with a sensitivity of 96.7 μA ⋅ μM −1 . As a H 2 O 2 sensor, a high sensitivity of 3540 μA mM −1 cm −2 was obtained in a linear range from 0.45 mM to 10 mM with a detection limit of 10 nM. Moreover, the electrochemical detection of Pb(II) in Taihu Lake and H 2 O 2 in human serum was achieved with high reliability and good recovery.

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