Nanostructure-assisted charge transfer in α-Fe2O3/g-C3N4 heterojunctions for efficient and highly stable photoelectrochemical water splitting

2020 ◽  
Vol 49 (32) ◽  
pp. 11317-11328 ◽  
Author(s):  
Nurul Affiqah Arzaee ◽  
Mohamad Firdaus Mohamad Noh ◽  
Nur Suraya Haziqah Mohd Ita ◽  
Nurul Aida Mohamed ◽  
Siti Nur Farhana Mohd Nasir ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Efficient Charge ◽  
Charge Transfer Dynamics ◽  
Stability Enhancement

Modification of the nanostructural features of an α-Fe2O3/g-C3N4 heterojunction photoanode contributes to a threefold stability enhancement in photoelectrochemical water splitting owing to the efficient charge transfer dynamics.

Efficient and stable charge transfer channels for photocatalytic water splitting activity of CdS without sacrificial agents

2020 ◽  
Vol 8 (40) ◽  
pp. 20963-20969 ◽  
Author(s):  
Wei Chen ◽  
Guo-Bo Huang ◽  
Hao Song ◽  
Jian Zhang
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Photocatalytic Water Splitting ◽  
Transfer Channel ◽  
Efficient Charge ◽  
Transfer Channels

An efficient charge transfer channel for improving the photocatalytic water splitting activity and durability of CdS without sacrificial agents.

scholarly journals Understanding the anatase–rutile phase junction in charge separation and transfer in a TiO2 electrode for photoelectrochemical water splitting

2016 ◽  
Vol 7 (9) ◽  
pp. 6076-6082 ◽  
Author(s):  
Ailong Li ◽  
Zhiliang Wang ◽  
Heng Yin ◽  
Shengyang Wang ◽  
Pengli Yan ◽  
...  
Keyword(s):  
Water Splitting ◽  
Charge Separation ◽  
Rutile Phase ◽  
Interface Structure ◽  
Photoelectrochemical Water Splitting ◽  
Tio2 Electrode ◽  
Phase Alignment ◽  
Efficient Charge

The key to phase junctions for efficient charge separation is to consider both the phase alignment and interface structure.

P-doped In2S3 nanosheets coupled with InPOx overlayer: Charge-transfer pathways and highly enhanced photoelectrochemical water splitting

2019 ◽  
Vol 375 ◽  
pp. 389-398 ◽  
Author(s):  
Yixuan Gao ◽  
Shihao Zhang ◽  
Yishi Wu ◽  
Yang Tian ◽  
Hongbing Fu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting

scholarly journals Spatiotemporal imaging of anisotropic charge transfer in photocatalyst particles

2021 ◽  
Author(s):  
Can Li ◽  
Ruotian Chen ◽  
Zefeng Ren ◽  
Yu Liang ◽  
Thomas Dittrich ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Rational Design ◽  
Catalytic Surface ◽  
Time Resolved ◽  
Transfer Processes ◽  
Ballistic Electron ◽  
Photogenerated Electrons ◽  
Particle Level ◽  
Efficient Charge ◽  
Charge Transfer Dynamics

Abstract Water-splitting reactions using photocatalyst particles are promising routes for solar fuel production1-4. Photoinduced charge transfer from a photocatalyst to catalytic surface sites is key in ensuring photocatalytic efficiency5; however, it is challenging to understand this process, which spans a wide spatiotemporal range from nanometers to micrometers and from femtoseconds to seconds6-8. Although the steady-state charge distribution on single photocatalyst particles has been mapped using microscopic techniques9-11 and the averaged charge transfer dynamics in photocatalyst aggregations have been revealed via time-resolved spectroscopy12,13, spatiotemporally evolving charge transfer processes in single photocatalyst particles cannot be tracked, and the mechanism of charge transfer is unknown. Here, we report spatiotemporally resolved surface photovoltage measurements on Cu2O photocatalyst particles to map complete charge transfer processes throughout the femtosecond to second time scale at the single-particle level. We found that photogenerated electrons are transferred to the catalytic surface ballistically on a sub-picosecond timescale and are retained at this location for the duration, whereas photogenerated holes are transferred to a spatially separated surface and stabilized via selective trapping on a microsecond timescale. We demonstrate that these ballistic electron transfer and anisotropic trapping regimes, which challenge the classical perception of the drift–diffusion model, contribute to efficient charge separation in photocatalysis and improve the photocatalytic performance. We anticipate our findings to demonstrate the universality of other photoelectronic devices and facilitate the rational design of photocatalysts.

Enhancing interfacial charge transfer in WO3/BiVO4 photoanode heterojunction through gallium and tungsten co-doping and sulfur modified Bi2O3 interfacial layer

2021 ◽  
Author(s):  
Umesh Prasad ◽  
James Luke Young ◽  
Justin C. Johnson ◽  
Deborah McGott ◽  
Hengfei Gu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transport ◽  
Water Splitting ◽  
Interfacial Layer ◽  
Photoelectrochemical Water Splitting ◽  
Interfacial Charge Transfer ◽  
Co Doping ◽  
Interfacial Charge ◽  
And Tungsten

Photoanodes containing a WO3/BiVO4 heterojunction have demonstrated promising photoelectrochemical water splitting performance, but the ability to effectively passivate the WO3/BiVO4 interface has limited charge transport and collection. Here, the WO3/BiVO4...

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