Preparation of a Water-Soluble ZnX Cd1-X S Quantum Dot Photocatalyst at Room Temperature Assisted by 3-Mercaptopropionic Acid.
Chem Asian J
; 16(22): 3619-3623, 2021 Nov 15.
Article
en En
| MEDLINE
| ID: mdl-34528410
ABSTRACT
An effective path to synthesize Znx Cd1-x S quantum dots (ZCS QDs) in aqueous phase at room temperature has remained relatively unexplored. Here, we developed a room-temperature, aqueous-phase approach to ZCS QDs, using 3-mercaptopropionic acid (MPA) to adjust the pH of the reaction precursor solution to regulate the competition between sulfur source and hydroxyl group, and realize the large-scale preparation of water-soluble ZCS QDs photocatalyst at room temperature. Without recombination with other materials, and only by regulating the ratio of pH, excess sulfur sources and Zn/Cd, the photocatalytic degradation of rhodamineâ
B (RhB) can reach 98% within 1â
min, showing high photocatalytic activity. ZCS QDs show high stability and recoverability, and are expected to be able to deal with organic pollutants on a large scale. This study provides a new idea for the preparation of other QDs at room temperature.
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01-internacional
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MEDLINE
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En
Revista:
Chem Asian J
Año:
2021
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Article