کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1606813 1516228 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Visible-light driven photocatalytic degradation of methylene-violet by rGO/Fe3O4/ZnO ternary nanohybrid structures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Visible-light driven photocatalytic degradation of methylene-violet by rGO/Fe3O4/ZnO ternary nanohybrid structures
چکیده انگلیسی


• Ternary nanohybrid constructed with 1D ZnO, Fe3O4 and 2D rGO.
• Aggregation free rGO/Fe3O4/ZnO nanohybrid exhibits superior photocatalytic activity.
• rGO boost up photo charge carrier separation in rGO/Fe3O4/ZnO nanohybrid.
• Dye degradation was monitored by UV–vis and TOC removal.

A novel ternary nanohybrid structure was constructed with reduced graphene-oxide/iron-oxide/zinc-oxide (rGO/Fe3O4/ZnO) via a facile hydrothermal method. The structural, morphological and optical properties were explored using X-ray diffraction, scanning electron microscope (SEM) with energy dispersive spectra and photoluminescence (PL) studies. The functional groups of ternary nanohybrid were characterized by Fourier transform-infrared spectroscopy. SEM images confirm the presence of two-dimensional GO sheets, one dimensional Fe3O4 and ZnO nanorods. The PL spectra showed the quenching effect which has been observed from the reduction of electron–hole recombination in hybrid. Degradation efficiency of this system was evaluated and compared with pure ZnO and Fe3O4/ZnO. Under visible light condition, the ternary nanohybrid has shown an excellent photocatalytic degradation of methylene-violet dye. The degradation efficiency of rGO/Fe3O4/ZnO was systematically analyzed by absorption spectra and total organic carbon removal techniques. Our experimental results will show the potential way for the development of futuristic rGO based nanohybrids as an effective photocatalytic materials for waste-water treatment and environmental remedial applications.

A new ternary nanohybrid has been constructed with 1D Fe3O4–ZnO and 2D rGO sheets to utilize as visible-light photocatalyst. Highly active photocatalyst has been prepared by a feasible hydrothermal approach. For the first time, rGO/Fe3O4/ZnO ternary nanohybrid exhibits a superior photocatalytic activity towards the degradation of methylene-violet (dye) and the same can be used for environmental remediation applications.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 665, 25 April 2016, Pages 107–112
نویسندگان
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