Improved photocatalytic activity of SnO2–ZnAl LDH prepared by one step Sn4+ incorporation
Source abstract
Abstract
Abstract SnO 2 –ZnAl LDH with a molar ratio Zn/(Al + Sn) 3/1 (Sn 4 + contents 0.1–0.4 mol%) were prepared in one step by the co-precipitation method. The ZnAl LDH intercalated with carbonate ions and the composite of ZnAl LDH formed together with SnO 2 were characterized by XRD, SEM, HRTEM and complementary spectroscopies such as FTIR, XPS and UV–Vis. The EDX and AAS was performed for the compositional analysis. The effect of the Sn 4 + content on the opto-electronic properties of the dried SnO 2 –ZnAl LDH composites were evaluated on the phenol photodegradation under UV light irradiation. The mineralization degree of the photocatalysts was determined after 2 h of reaction by TOC analysis. The SnO 2 –ZnAl LDH composites that showed the highest photocatalytic activity were compared with ZnAl LDH sample impregnated with Sn 4 + cations. The effect of the presence of the Zn 5 (CO 3 ) 2 (OH) 6 as precursor for the formation of the ZnAl LDH as well as the methodology of synthesis on the photocatalytic properties of the composites were studied. A possible mechanism of the OH radical formation and electron–hole charge separation in the improvement photocatalytic reaction were discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Advanced Photocatalysis Techniques · Inorganic Chemistry and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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