کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
607572 1454578 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct synthesis of novel vanadium oxide embedded porous carbon nanofiber decorated with iron nanoparticles as a low-cost and highly efficient visible-light-driven photocatalyst
ترجمه فارسی عنوان
سنتز مستقیم اکسید وانادیوم جدید حاوی نانوفیبری کربن متخلخل تزریقی با نانوذرات آهن به عنوان یک فوتوکاتالیست با نور کم و با کارآیی بالا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی


• Porous VOx/CNF decorated with Fe NPs was synthesized by electrospinning method.
• Cost-saving NH4VO3 was used as structural constructor and porogen.
• The generated pores facilitate charge transfer.
• The novel membrane displayed excellent visible-light-driven photocatalytic activity.

Template-free porous carbon nanofibers embedded by vanadium oxide and decorated with iron nanoparticles (Fe@V-CNF) were prepared in a time and cost-saving manner by combining electrospinning and heat treatment processes. Cost-saving ammonium metavanadate was used as a semiconductor precursor of vanadium oxide (VOx) as well as porogen. The generated pores in the carbon nanofiber (CNFs) matrix formed pathways between the embedded VOx and the surface of CNFs and Fe NPs, thus, facilitate photo-generated electron transfer. The characterization results revealed that Fe@V-CNF comprised graphitic fibers with well-dispersed distribution of nanosized Fe NPs (∼7 nm) along the surface of CNF. Thereby, it enhanced the visible-light harvesting. The prepared Fe@V-CNF had remarkable light absorption in the visible region. It demonstrated much higher photocatalytic efficiency of photodegradation of organic dyes compared with the pure CNF and vanadium oxide embedded CNF (V-CNF). Notably, Fe@V-CNF achieved 99.9% dye degradation within 15–20 min. And, it could be conveniently recycled due to its one-dimensional nanostructural property.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 417, 1 March 2014, Pages 199–205
نویسندگان
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