کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5747100 1618799 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anchoring of silver nanoparticles on graphitic carbon nitride sheets for the synergistic catalytic reduction of 4-nitrophenol
ترجمه فارسی عنوان
انقباض نانوذرات نقره بر ورق های نیترید کربن گرافیت برای کاهش کاتالیزوری سینرژیک 4 نیتروفنول
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- Ag/g-C3N4 composite was firstly used for catalytic reduction of 4-nitrophenol.
- Ag/g-C3N4 composite exhibited excellent catalytic activity.
- A synergistic effect and interaction of Ag NPs with g-C3N4 was studied.
- A catalytic mechanism of composite under different conditions was elucidated.

In this paper, a facile process was developed for anchoring of silver nanoparticles on graphitic carbon nitride sheets (Ag/g-C3N4) with high catalytic activity for reduction of 4-nitrophenol. The morphology and structure of the as-prepared Ag/g-C3N4 composite were investigated by FESEM, TEM, XRD and XPS. The reaction mechanism and the reduction kinetics of 4-nitrophenol under different light irradiation were systematically studied. The results showed that the obtained Ag/g-C3N4 composite exhibited a much higher electro/photo catalytic activity and stability for reduction of 4-nitrophenol. Significantly, due to the synergistic effect and interaction between highly dispersed Ag nanoparticles (Ag NPs, ∼7.2 nm) and lamellar g-C3N4, not only transfer of interfacial charge, but also the separation of photoinduced electrons occurred when the reaction was proceeded under light. In addition, the composite exhibited high stability and reusability during the cycling experiments. The results showed that the Ag/g-C3N4 composite is an effective and stable electro/photo catalyst for reduction of 4-nitrophenol.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 172, April 2017, Pages 147-154
نویسندگان
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