Antibiyotiklerin ve hidrojen evriminin sinerjik fotokatalitik bozunması için çift fonksiyonlu (NiPS3 NSs + BP QDs)@In2O3 heteroyapısı

Özet (abstract)

The elimination of emerging organic contaminants and the exploitation of clean hydrogen energy are critical research topics in environmental remediation. Indium oxide (In 2 O 3 ) serves as a promising dual-functional photocatalyst with low resistivity and high catalytic activity, yet bare In 2 O 3 suffers severe recombination of photogenerated carriers to limit its practical performance. In this study, a ternary composite photocatalyst, (NiPS 3 NSs + BP QDs)@In 2 O 3 , was successfully constructed by co-modifying In 2 O 3 with two-dimensional NiPS 3 nanosheets and zero-dimensional black phosphorus quantum dots (BP QDs). A full set of characterizations delivers solid evidence for the formation of multi-component heterostructures. Photocatalytic tests confirm the composite strengthens visible-light absorption and accelerates carrier separation efficiency. Regarding degradation performance, (NiPS 3 NSs(20%) + BP QDs(4%))@In 2 O 3 exhibited optimal activity: the degradation rates of sulfamethoxazole, ampicillin, and ofloxacin reached 93.8% within 60 min, 96.9% within 70 min, and 94.4% within 90 min, respectively. Regarding hydrogen evolution performance, (NiPS 3 NSs(5%) + BP QDs(4%))@In 2 O 3 displayed the highest activity. A noticeable mismatch exists between the optimal cocatalyst dosages for degradation and hydrogen evolution, which reflects distinct functional demands of the two reactions. Mott–Schottky and VB-XPS results indicate fast interfacial charge transfer, and flat-band derived band alignment diagrams are supplied to clarify carrier migration routes.

Yazarların özeti; kaynağından alınmıştır. Materials Science in Semiconductor Processing, 2026 · DOI ↗