کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7706229 | 1497307 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoelectrochemical study on charge separation mechanisms of Bi2WO6 quantum dots decorated g-C3N4
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, the Bi2WO6 quantum dots (QDs) decorated g-C3N4 nanoplates were successfully synthesized via a one-step hydrothermal method. The morphology of the Bi2WO6 could be tuned from regular nanoplates to quantum dots. Remarkably, the Bi2WO6 QDs coupled with g-C3N4 not only prevented the aggregation, but also decreased the size of Bi2WO6 QDs about 3.5Â nm. Meanwhile, the charge separation mechanisms of Bi2WO6 QDs/g-C3N4 photocatalyst were investigated by electrochemical impedance spectra, Mott-Schottky and linear voltammetry scans. As a result, the photoelectrochemical (PEC) experiments provided forceful evidence for the charge separation mechanism of the Bi2WO6 QDs/g-C3N4 Z-scheme. The Z-scheme system not only accelerated the separation efficiency of charge, but also improved the ability of PEC water splitting at measured 1.23Â V vs. RHE.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 18, 3 May 2018, Pages 8824-8834
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 18, 3 May 2018, Pages 8824-8834
نویسندگان
Hongjuan Hao, Dingze Lu, Qiuping Wang,