期刊
MICROCHEMICAL JOURNAL
卷 152, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.microc.2019.104259
关键词
Photoelectrochemical; He2+; Graphite carbonitride (g-C3N4); CdS quantum dots (CdS QDs)
资金
- National Natural Science Foundation of China [21575083]
- Natural Science Foundation of Shanxi Province [201801D121042]
- Transformation of Scientific and Technological Achievements Programs of Higher Education Institutions in Shanxi [2019KJ008]
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University [SKLACLS1911]
Graphite carbonitride (g-C3N4) is one of the ideal metal-free semiconductors for photocatalysis, quantum dots are excellent photoelectrically active materials, and both have broad application prospects in photoelectrochemical (PEC) devices. In this work, a novel photoelectrochemical (PEC) sensor was latest employed based on the complex of g-C(3)N(4 )and CdS QD (g-C3N4@CdS) fixated on a tin oxyfluoride (FTO) electrode for discovering Hg2+. The PEC system showed a good linear range of 20-550 nM, with a detection limit of 12 nM, The possible mechanism is signal shutdown strategy based on a lower sedimentation equilibrium constant of HgS. Thus, the g-C3N4@CdS based PEC sensor had positive effect on solving some issues, such as complicated operation, in the detection of He2+.
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