Bi-functional RuO2–Co3O4 core–shell nanofibers as a multi-component one-dimensional water oxidation catalyst

2013 ◽  
Vol 49 (84) ◽  
pp. 9725 ◽  
Author(s):  
Jong Wan Ko ◽  
Won-Hee Ryu ◽  
Il-Doo Kim ◽  
Chan Beum Park
Keyword(s):  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Core Shell ◽  
One Dimensional

scholarly journals Visible photoelectrochemical water splitting into H2 and O2 in a dye-sensitized photoelectrosynthesis cell

2015 ◽  
Vol 112 (19) ◽  
pp. 5899-5902 ◽  
Author(s):  
Leila Alibabaei ◽  
Benjamin D. Sherman ◽  
Michael R. Norris ◽  
M. Kyle Brennaman ◽  
Thomas J. Meyer
Keyword(s):  
Water Splitting ◽  
Single Molecule ◽  
Water Oxidation ◽  
Shell Thickness ◽  
Atomic Layer ◽  
Oxidation Catalyst ◽  
Core Shell ◽  
Hybrid Strategy ◽  
Solar Water Splitting ◽  
Dye Sensitized

A hybrid strategy for solar water splitting is exploited here based on a dye-sensitized photoelectrosynthesis cell (DSPEC) with a mesoporous SnO2/TiO2 core/shell nanostructured electrode derivatized with a surface-bound Ru(II) polypyridyl-based chromophore–catalyst assembly. The assembly, [(4,4’-(PO3H2)2bpy)2Ru(4-Mebpy-4’-bimpy)Ru(tpy)(OH2)]4+ ([RuaII-RubII-OH2]4+, combines both a light absorber and a water oxidation catalyst in a single molecule. It was attached to the TiO2 shell by phosphonate-surface oxide binding. The oxide-bound assembly was further stabilized on the surface by atomic layer deposition (ALD) of either Al2O3 or TiO2 overlayers. Illumination of the resulting fluorine-doped tin oxide (FTO)|SnO2/TiO2|-[RuaII-RubII-OH2]4+(Al2O3 or TiO2) photoanodes in photoelectrochemical cells with a Pt cathode and a small applied bias resulted in visible-light water splitting as shown by direct measurements of both evolved H2 and O2. The performance of the resulting DSPECs varies with shell thickness and the nature and extent of the oxide overlayer. Use of the SnO2/TiO2 core/shell compared with nanoITO/TiO2 with the same assembly results in photocurrent enhancements of ∼5. Systematic variations in shell thickness and ALD overlayer lead to photocurrent densities as high as 1.97 mA/cm2 with 445-nm, ∼90-mW/cm2 illumination in a phosphate buffer at pH 7.

Core–shell CoFe2O4@Co–Fe–Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pH

Nanoscale ◽  
2017 ◽  
Vol 9 (23) ◽  
pp. 7714-7718 ◽  
Author(s):  
Xuqiang Ji ◽  
Shuai Hao ◽  
Fengli Qu ◽  
Jingquan Liu ◽  
Gu Du ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Core Shell ◽  
Neutral Ph

scholarly journals Self-Standing 3D Core–Shell Nanohybrids Based on Amorphous Co–Fe–Bi Nanosheets Grafted on NiCo2O4 Nanowires for Efficient and Durable Water Oxidation

2020 ◽  
Vol 3 (5) ◽  
pp. 4338-4347 ◽  
Author(s):  
Umesh P. Suryawanshi ◽  
Mahesh P. Suryawanshi ◽  
Uma V. Ghorpade ◽  
Mingrui He ◽  
Dongmin Lee ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Core Shell

Water Oxidation Catalyst via Heterogenization of Iridium Oxides on Silica: A Polyamine-Mediated Route To Achieve Activity and Stability

ACS Catalysis ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 5699-5705 ◽  
Author(s):  
Nagaraju Shilpa ◽  
Joydeb Manna ◽  
Parasmani Rajput ◽  
Rohit Kumar Rana
Keyword(s):  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Iridium Oxides

Synthesis of nanostructuredβ-Ni(OH)2by electrochemical dissolution–precipitation and its application as a water oxidation catalyst

2016 ◽  
Vol 27 (27) ◽  
pp. 275401 ◽  
Author(s):  
Sang Cheol Jung ◽  
Soong Leong Sim ◽  
Ying Woan Soon ◽  
Chee Ming Lim ◽  
Peter Hing ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Electrochemical Dissolution
Sign in / Sign up

Export Citation Format

Share Document