Water-splitting hydrogen production photocatalyst including spatially separated cocatalyst and method for producing same
AssigneePostech Research and Business Development Foundation
InventorsKijung Yong, Hyun Sik Moon
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Abstract
Proposed are a water-splitting hydrogen production photocatalyst including spatially separated cocatalysts and a method of preparing the same. The photocatalyst is shaped to be hollow. The photocatalyst includes a first cocatalyst core containing a first cocatalyst, a catalyst layer positioned on the first cocatalyst core and containing a first catalyst and a second catalyst, and a second cocatalyst layer positioned on the catalyst layer and containing a second cocatalyst. The photocatalyst exhibits excellent hydrogen production efficiency and charge transfer efficiency.
Claims14
A photocatalyst for water-splitting hydrogen production, the photocatalyst comprising:
- a first cocatalyst core being hollowed and comprising a first cocatalyst including iridium oxide;
- a catalyst layer positioned on the first cocatalyst core and comprising a first catalyst including titanium oxide and a second catalyst including graphitic nitrogen carbide (g-C3N4);
- and
- a second cocatalyst layer positioned on the catalyst layer and comprising a second cocatalyst including platinum (Pt).
A method of preparing a catalyst for water-splitting hydrogen production, the method comprising:
- (a) preparing metal oxide nanoparticles including silicon oxide (SiO2);
- (b) forming a first cocatalyst layer comprising a first cocatalyst including iridium oxide on a surface of each of the metal oxide nanoparticles;
- (c) forming a catalyst layer comprising a first catalyst including titanium oxide and a second catalyst including graphitic nitrogen carbide (g-C3N4) on the first cocatalyst layer;
- (d) forming a second cocatalyst layer comprising a second cocatalyst including platinum (Pt) on the catalyst layer;
- and
- (e) etching the metal oxide nanoparticles to obtain first cocatalyst cores being hollow and comprising the first cocatalyst.
Dependencies are inferred from the claim text.