Construction of Co/OV-TiO2 nanobranch arrays and the enhanced mechanism for Photoelectrocatalytic water splitting
Source abstract
Abstract
A dual-modification strategy integrating hydrogenation with plasma-enhanced atomic layer deposition (PE-ALD) is developed to address bulk carrier recombination and sluggish OER kinetics in TiO₂ photoanodes. Oxygen vacancies (Ov) introduced by hydrogenation broaden light response and suppress bulk charge recombination, while ALD-deposited Co nanoparticles form a Schottky junction serving as hole-trapping centers, reducing OER overpotential and extending carrier lifetime. The optimized TNB-H2@Co-200 photoanode achieves a photocurrent density of 1.02 mA cm2 at 1.23 V vs. RHE under AM 1.5G illumination — about five times that of pristine TiO₂ — demonstrating outstanding PEC performance.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Iron oxide chemistry and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
Show source-provided references
1. Wind energy and the hydrogen economy - review of the technology10.1016/j.solener.2005.01.002 ↗
2. F and Fe co-doped TiO2 with enhanced visible light photocatalytic activity10.1007/s10971-011-2449-0 ↗
3. Controlled fabrication of CdS/TiO2 nanorod heterojunction on Ti foils and its photoelectrochemical activity10.1016/j.jallcom.2014.05.164 ↗
4. Morphology-engineered highly active and stable pd/TiO2 catalysts for CO2 hydrogenation into formate10.1016/j.jcat.2021.11.035 ↗
5. Electrochemical photolysis of water at a semiconductor electrode10.1038/238037a0 ↗
6. Flame synthesis of WO3 nanotubes and nanowires for efficient photoelectrochemical water-splitting10.1016/j.proci.2012.06.122 ↗
7. Atomic layer deposition meets metal-organic frameworks10.1016/j.pmatsci.2023.101159 ↗
8. Hydrogen-treated TiO2 nanowire arrays for photoelectrochemical water splitting10.1021/nl201766h ↗
9. In situ photoelectrochemical chelation programs defect-resilient coordination microenvironments for enhanced water oxidation
10. Ultrasound-triggered surface reconstruction with improved carriers transfer kinetics in CdIn2S4 for solar water oxidation
11. Interfacial effect of CoZn-MOFs synergizes with in doping to notably improve efficiency of TaON photoanode photoelectrochemical water splitting10.1016/j.jcat.2025.116304 ↗
12. Effective improvement of thermodynamics and kinetics of BiVO4 photoanode via CuI for photoelectrochemical water oxidation10.1021/acs.langmuir.4c03658 ↗
13. Structural features of p-type semiconducting NiO as a co-catalyst for photocatalytic water splitting10.1016/j.jcat.2010.03.020 ↗
14. Co-catalytic effect and mechanism of Ni/co codoped prussian blue and Zr doping on the photoelectrochemical water splitting of α-Fe2O310.1021/acs.inorgchem.5c05660 ↗