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Enhanced electrochemiluminescence of CdSe quantum dots coupled with MoS2-chitosan nanosheets

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Abstract

A novel molybdenum sulfide-chitosan/CdSe quantum dots (MoS2-CS/CdSe QDs) composite was prepared by a facile liquid chemistry procedure. The composition and morphology of the composite as-prepared were characterized by a series of measurements. The electrode modified with MoS2-CS/CdSe QDs composite has excellent electrochemiluminescence (ECL) property that benefited from the synergistic effect of MoS2 nanosheets, CdSe QDs, and CS molecules. Based on strong and stable ECL emission, the electrode as-modified was used as ECL sensor for the detection of uric acid (UA) and the results show that the detection linear range for UA is from 0.10 to 140 nM with the detection limit of 0.040 nM. Depending on its good sensitivity and selectivity, this ECL sensor was successfully applied to determine uric acid in urine sample.

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Acknowledgments

Support for this work from the National Natural Science Foundation of China (Nos. 21275006, 21471001, 20905001, 21071002, 21175001, 21271004) is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemistry, Anhui University, Hefei, 230601, China

    Rui Ke, Xiaomei Zhang, Lei Wang, Chunyan Zhang, Shengyi Zhang, Helin Niu, Changjie Mao, Jiming Song, Baokang Jin & Yupeng Tian

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  1. Rui Ke
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  2. Xiaomei Zhang
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Correspondence to Shengyi Zhang.

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Ke, R., Zhang, X., Wang, L. et al. Enhanced electrochemiluminescence of CdSe quantum dots coupled with MoS2-chitosan nanosheets. J Solid State Electrochem 19, 1633–1641 (2015). https://doi.org/10.1007/s10008-015-2793-z

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  • DOI: https://doi.org/10.1007/s10008-015-2793-z

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