Zinc cadmium sulfide nanocrystals prepared in PAM water-soluble nanoreactors and their photocatalytic performance in photodegradation.

Authors

Ketao Xia, Zhenqian Zhang, Bijun Fang, Ranhong Lu

Published in

Nanotechnology. Volume 37. Issue 32. Aug 13, 2026. Epub Aug 13, 2026.

Abstract

The Zn_xCd_1-xS nanocrystals with different Zn²⁺/Cd²⁺ratios were solvothermally incubated in water-soluble nanoreactors formed by inverse miniemulsion. Notably, Zn_0.5Cd_0.5S nanocrystals with larger grain sizes were obtained from polyacrylamide (PAM) nanoreactors, where the PAM solution served as a key component for precursor ripening. The miniemulsion-derived nanoreactors remained stable during nanocrystal incubation, with a size of approximately 160 nm. The obtained Zn_xCd_1-xS nanocrystals exhibited a cubic structure, and their band gap (E_g) was tunable from 3.83 eV (x= 1) to 2.64 eV (x= 0). The catalytic performance of the nanocrystals was optimized by adjusting both the Zn²⁺/Cd²⁺ratio and the PAM concentration in the nanoreactors. Specifically, Zn_0.5Cd_0.5S nanocrystals incubated in nanoreactors containing 10.0 mg g^-1PAM achieved an enhanced grain size of 15 nm, displaying a tunable band gap of 2.58 eV and a weaker luminescence intensity. These nanocrystals exhibited the best catalytic degradation efficiency by balancing the light absorption and the photogenerated charge redox ability, thereby providing a selective strategy for the design of the advanced semiconductor materials.

PMID:
42590988
Bibliographic data and abstract were imported from PubMed on 13 Aug 2026.

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