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Your search keyword '"Zhang, Aiyu"' showing total 9 results
Start Over Author "Zhang, Aiyu" Publisher american scientific publishers
9 results on '"Zhang, Aiyu"'

9. Cu 2+ and Fe 2+ Sensor Based on CdTe QD@ZIF-8 Composites.

Author

Zhang A, Fan C, Sun W, Chen L, Shi R, Cao Y, and Yang P

Abstract

TGA capped CdTe QDs have been encapsulated in miroporous ZIF-8, with no obvious deterioration of their photoluminescence property. The resulted CdTe QD@ZIF-8 composites show a higher luminescent stability in various buffer solution. The material has successfully been used as a luminescent indicator for the detection of Cu 2+ and Fe 2+ ions. The luminescence of CdTe QD@ZIF-8 composite quenches only in the presence of Cu 2+ or Fe 2+ ions. The linear ranges of detection have been estimated as 1~50 uM for Cu 2+ ions and 1~60 uM for Fe 2+ ions, respectively. A "competing transmission" mechanism has been proposed to explain the selectivity of the sensor to detecting Cu 2+ and Fe 2+ ions. Luminescent quenching can only occurred when the bonding power of QD surface surpasses the adsorptivity of the outside ZIF-8 to the metal ions.

Published
2019
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