2026-10-13T02:21:25Z https://www.scidb.cn/oai

10.57760/sciencedb.38445 2026-05-29T16:57:53Z

2026-05-29 Oxygen Vacancies Enriched Fe2(MoO4)3 for Efficient Photo-Fenton Degradation of Tetracycline Hydrochloride doi:10.57760/sciencedb.38445 en Using a simple two-step calcination method, an iron molybdate catalyst rich in oxygen vacancies was successfully prepared for the photo-Fenton degradation of tetracycline hydrochloride. The composition, morphology and optical properties of the catalyst were characterized using XRD, SEM, EDS mapping, XPS, UV-Vis DRS, EPR and BET analyses. The results indicate that grinding and mixing iron molybdate with tartaric acid, followed by a second calcination, significantly enhances the specific surface area of the iron molybdate, creates a wealth of oxygen vacancy defects, and improves its light absorption capacity and photocatalytic activity. Under conditions of pH = 4, 5 mg of catalyst, and 30 μL of 30% H2O2, the oxygen-vacancy-containing iron molybdate catalyst achieved a degradation efficiency of 82.2% for hydrochloride tetracycline within 30 min, representing a 36.6% improvement over the pure iron molybdate system, and maintained a high degradation efficiency even after five cycles. Radical trapping experiments and EPR spectroscopy indicated that •OH, •O2− and h+ all participate in the degradation process. This study provides a reference for enhancing the efficiency of photocatalytic Fenton degradation of tetracycline hydrochloride through oxygen vacancy engineering. photo-Fenton; tetracycline hydrochloride; ferrous molybdate; catalytic degradation Cheng Wei He Yandi Gao Aolong Si Chenyuan Li Jiajia Meiqiong Wang Qizhao PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset http://www.doi.org/10.3724/j.issn1001-3555.2026.03.003 Science Data Bank