کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6454426 1418817 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultrathin graphitic C3N4 nanosheet as a promising visible-light-activated support for boosting photoelectrocatalytic methanol oxidation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Ultrathin graphitic C3N4 nanosheet as a promising visible-light-activated support for boosting photoelectrocatalytic methanol oxidation
چکیده انگلیسی


- Ultrasmall Pt clusters are well dispersed on the surface of the g-C3N4 nanosheets.
- Pt/g-C3N4 as an efficient visible light driven photoelectrocatalyst for MOR.
- Pt/g-C3N4 composite showed enhanced photoelectrocatalytic activity and stability.

In this paper, ultrathin two dimensional (2D) g-C3N4 nanosheet worked as support for the deposition of ultrasmall Pt nanoclusters. The average size of Pt nanocluster is about 3.2 nm. Firstly, the as-prepared Pt/g-C3N4 modified electrode exhibited enhanced electrocatalytic ability in methanol oxidation reaction (MOR) compared to bare Pt nanoparticles. Moreover, when this electrode was upon visible light irradiation, higher performance of MOR was clearly observed compared to the traditional ambient electrocatalytic oxidation. This is owing to the synergistic effects of photocatalytic and electrocatalytic MOR together with the efficient interfacial charger transfer in Pt/g-C3N4. These results show that 2D ultrathin g-C3N4 nanosheets can be used as promising photoactived support in the fields of solar and chemical energy conversion and also provide more insights into developing novel visible light photo-responsive electrode in direct methanol fuel cell.

The synergistic effects of electro- and photo- catalytic methanol oxidation reaction (MOR) of Pt/g-C3N4 contribute to the enhanced catalytic MOR performance.196

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 203, April 2017, Pages 108-115
نویسندگان
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