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Title: Block copolymer-mediated synthesis of TiO2/RuO2 nanocomposite for efficient oxygen evolution reaction
Abstract An amphiphilic block copolymer, poly (styrene-2-polyvinyl pyridine-ethylene oxide), was used as a structure-directing and stabilizing agent to synthesize TiO2/RuO2nanocomposite. The strong interaction of polymers with metal precursors led to formation of a porous heterointerface of TiO2/RuO2. It acted as a bridge for electron transport, which can accelerate the water splitting reaction. Scanning electron microscopy, energy-dispersiveX-ray spectroscopy, transmission electron microscopy, andX-ray diffraction analysis of TiO2/RuO2samples revealed successful fabrication of TiO2/RuO2nanocomposites. The TiO2/RuO2nanocomposites were used to measure electrochemical water splitting in three-electrode systems in 0.1-M KOH. Electrochemical activities unveil that TiO2/RuO2-150 nanocomposites displayed superior oxygen evolution reaction activity, having a low overpotential of 260 mV with a Tafel slope of 80 mVdec−1. Graphical abstract  more » « less
Award ID(s):
2122067
PAR ID:
10562182
Author(s) / Creator(s):
; ;
Publisher / Repository:
Springer
Date Published:
Journal Name:
Journal of Materials Science
Volume:
59
Issue:
23
ISSN:
0022-2461
Page Range / eLocation ID:
10193 to 10206
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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