Expression of Concern for “Comparative Study of Sonophotocatalytic, Photocatalytic, and Catalytic Activities of Magnesium and Chitosan-Doped Tin Oxide Quantum Dots”

As of November 24, 2025, the Editor-in-Chief has issued an Expression of Concern for this article (DOI: 10.1021/acsomega.2c05133) due to unresolved questions about the accountability for the work. When viewed alongside a broader pattern of issues across related publications (DOIs: 10.1021/acsomega.2c02790, 10.1021/acsomega.2c04650, 10.1021/acsomega.2c00583, 10.1021/acsomega.1c03723, 10.1021/acsomega.2c00240, 10.1021/acsomega.2c05625, 10.1021/acsomega.2c02732, 10.1021/acsomega.2c07753, 10.1021/acsomega.2c05133, 10.1021/acsomega.2c04862, 10.1021/acsomega.2c07460, 10.1021/acsomega.2c05569, 10.1021/acsomega. 2c07980, 10.1021/acsomega.3c00604, 10.1021/acsomega. 2c03049) these concerns raise doubts about the reliability of the findings. The authors provided an explanation but, at this time, it neither resolved nor confirmed the concerns.