期刊
RSC ADVANCES
卷 3, 期 34, 页码 14451-14457出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra41118d
关键词
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资金
- National Natural Science Foundation of China [21075054, 21175061, 31271620]
- Natural Science Foundation of the Education Bureau of Jiangsu Province, China [10KJA470007]
- Key Laboratory of Modern Agriculture Equipment and Technology [NZ201109]
- China Postdoctoral Science Foundation [2012M520998, 2012M511217]
- Research Foundation of Jiangsu University [12JDG087]
A series of CdxZn1-xS-reduced graphene oxide (CdxZn1-xS-rGO) nanocomposites were successfully prepared by a facile one-pot reaction. In this reaction system, H2S gas acted as a sulfide source as well as a reducing agent, resulting in the formation of CdxZn1-xS nanoparticles and simultaneous reduction of graphene oxide sheets to rGO. The photoelectrochemical (PEC) performances of CdxZn1-xS-rGO nanocomposites were further investigated under visible irradiation, which showed that the photocurrent intensities were influenced by the cationic composition (x) in CdxZn1-xS-rGO nanocomposites. Compared with other CdxZn1-xS-rGO nanocomposites, the Cd0.5Zn0.5S-rGO nanocomposite displayed optimal photocurrent intensity, which was 5 times greater than that of CdS NPs. Based on Cu2+ selective suppression of the photocurrent intensity of the Cd0.5Zn0.5S-rGO nanocomposite, the photocurrent suppression obtained was linearly proportional to the logarithm of the concentration of Cu2+. The resulting Cu2+ photoelectrochemical sensor showed good performance including a wide linear range of 0.02 mu M to 20 mu M, low detection limit of 6.7 x 10(-9) M (S/N = 3) and good anti-interference ability.
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