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PtNi Alloy Cocatalyst Modification of Eosin Y-Sensitized g-C3N4/GO Hybrid for Efficient Visible-Light Photocatalytic Hydrogen Evolution
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PtNi Alloy Cocatalyst Modification of Eosin Y-Sensitized g-C3N4/GO Hybrid for Efficient Visible-Light Photocatalytic Hydrogen Evolution
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Journal Article
PtNi Alloy Cocatalyst Modification of Eosin Y-Sensitized g-C3N4/GO Hybrid for Efficient Visible-Light Photocatalytic Hydrogen Evolution
2018
Overview
An economic and effective Pt-based alloy cocatalyst has attracted considerable attention due to their excellent catalytic activity and reducing Pt usage. In this study, PtNi alloy cocatalyst was successfully decorated on the g-C
3
N
4
/GO hybrid photocatalyst via a facile chemical reduction method. The Eosin Y-sensitized g-C
3
N
4
/PtNi/GO-0.5% composite photocatalyst yields about 1.54 and 1178 times higher hydrogen evolution rate than the Eosin Y-sensitized g-C
3
N
4
/Pt/GO-0.5% and g-C
3
N
4
/Ni/GO-0.5% samples, respectively. Mechanism of enhanced performance for the g-C
3
N
4
/PtNi/GO composite was also investigated by different characterization, such as photoluminescence, transient photocurrent response, and TEM. These results indicated that enhanced charge separation efficiency and more reactive sites are responsible for the improved hydrogen evolution performance due to the positive synergetic effect between Pt and Ni. This study suggests that PtNi alloy can be used as an economic and effective cocatalyst for hydrogen evolution reaction.
Graphical abstract
A significant enhancement of photocatalytic H
2
evolution is realized over the Eosin Y-sensitized g-C
3
N
4
/PtNi/GO composite with PtNi alloy as an efficient cocatalyst.
Publisher
Springer US,Springer Nature B.V,SpringerOpen
