کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7922362 | 1511759 | 2018 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Metal-free heterojunction of graphitic carbon nitride composite with superior and stable visible-light active photocatalysis
ترجمه فارسی عنوان
ناهمسانی فلز بدون ترکیب کامپوزیت نیترید کربن گرافیت با فوتوکاتالیز فعال و پایدار قابل مشاهده است
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
کربن تریده، همجوشی ایزوتوپی، فوتوکاتالیز نور قابل مشاهده، کامپوزیت مولکولی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
A highly active isotype graphitic carbon nitride (g-C3N4) derivatives were fabricated by a one-step thermal treatment with the aim to promote the charge separation. The molecular composite precursor melamine-urea, melamine-thiourea, and urea-thiourea were treated simultaneously under the same thermal conditions, in situ creating a novel heterojunction. Coupling of g-C3N4 with different electronic band structure precursor produces different isotype heterojunctions. Different characterizations were studied using Fourier transform infrared spectroscopy, X-ray diffraction, Field emission scanning electron microscopy, Transmission electron microscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and UV-visible diffused reflectance spectroscopy. The prepared metal-free isotype heterojunction evidenced the separation of photoinduced charges, which promote the photocatalytic activity for degrading Methylene Blue (MB) under visible-light irradiation. The hetereojunction system shows 99% photodegradation for MB which is about 10% higher when compared to single precursor g g-C3N4 semiconductor. Moreover, photoactivity of the controlled bandgap design g-C3N4 composite semiconductors was greatly enhanced and possessed excellent stability even after four recycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 204, 15 January 2018, Pages 243-250
Journal: Materials Chemistry and Physics - Volume 204, 15 January 2018, Pages 243-250
نویسندگان
Induja M. Sundaram, Sivaprakash Kalimuthu, P. Gomathi priya,