Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 36, Pages 17958-17964Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp203868t
Keywords
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Funding
- National Natural Science Foundation of China [21073084, 20821063]
- 973 Program [2011CB933502, 2007CB936-302]
- Ministry of Education [20100091110023]
- Fundamental Research Funds for the Central Universities [1112020504]
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ZnO/CdS hierarchical nanospheres were prepared for photoelectrochemical selective sensing of Cu2+. Hierarchical ZnO nanospheres were first synthesized by the hydrolysis of zinc salt under ultrasound irradiation, and then CdS nanocrystals were selectively grown on the hierarchical ZnO nanospheres. The light scattering of ZnO nanospheres and the heterointerfaces between CdS and ZnO provided significant advantages for enhanced light absorption and charge separation, thus resulting in an improvement in the photocurrent intensity. A photoelectrochemical sensor was developed based on the interaction between Cu2+ and CdS. The results showed that this sensor has a good selectivity and high sensitivity for Cu2+ detection.
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