کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4756192 1418816 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancing photoactivity for hydrogen generation by electron tunneling via flip-flop hopping over iodinated graphitic carbon nitride
ترجمه فارسی عنوان
افزایش فعالیت عکسبرداری برای تولید هیدروژن توسط تونل زنی الکترونیکی با استفاده از فلیپ فلاپ، روی نیترید کربن گرافیتی یددار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی
The I3− and I5− decorated graphitic carbon nitride (I-g-C3N4) was formed by in situ AgI NPs decomposition driven by visible light irradiation. The species of I3− and I5− clusters could lead to a larger Rashba spin-orbit coupling with active electrons living in p orbitals. The electrons, produced by the excited EY, could hop through the tunneling between two atoms of g-C3N4 opened by the polyiodides p orbitals. It gives rise to the superior charge transfer performance, which could remarkably reduce the recombination of carrier and prolong the lifetime of photogenerated charges. With the help of these properties, a highly active H2 evolution has been achieved over I-g-C3N4/Ag photocatalyst under visible light irradiation. About 104.3 μmol H2 was evolved over I-g-C3N4/Ag photocatalyst in 3 h and no remarkable decay of activity was observed in 900 min reaction. The highest AQE value of 7.3% was achieved at 520 nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 204, 5 May 2017, Pages 33-42
نویسندگان
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