Photocatalytic degradation of Rhodamine B dye using low‐cost pyrofabricated titanium dioxide quantum dots‐kaolinite nanocomposite
نویسندگان
چکیده
In this study, we report a simple technique for the pyrofabrication of novel photocatalyst titanium dioxide quantum dots‐kaolinite nanocomposite (TiO 2 ‐QDs‐Kao) used rhodamine B (RhB) dye degradation. The was characterized by using different analytical techniques, including XRD, XRF, XPS, FTIR, DTA/TGA, SEM–EDX, TEM, BET, BJH, ZP and UV–Vis DRS. photocatalytic degradation RhB performed in aqueous solutions sustainable sunlight energy under atmospheric conditions fixed neutral medium (pH = 7). produced exhibited optical band gap 2.85 eV, an improved large specific surface area 107.724 m /g with pore radius 1.45 nm total volume 0.123 cm 3 /g. study indicated maximum 91% efficiency after 120 min optimum dose 1,400 mg/l TiO ‐QDs‐Kao photocatalyst. fitted Langmuir first‐order kinetics rate constant 0.0151 −1 . radical trapping experiments based on scavengers confirmed that mechanism activity potentially electron (e − ) hole (h + conduction band. potential valence bands E VB CB were calculated 2.73 −0.12 respectively. A triple reusability high stability detected efficiencies 91.0, 89.9, 88.8 87.5%,
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ژورنال
عنوان ژورنال: Applied Organometallic Chemistry
سال: 2023
ISSN: ['0268-2605', '1099-0739']
DOI: https://doi.org/10.1002/aoc.7113