Effect of preparation conditions and Co-Pi groups as noble metal-free redox mediator and hole extractor to boost photoelectrochemical water oxidation for 1D nanorod α-Fe2O3

2021 ◽  
Author(s):  
Ai Qin ◽  
Wanqing Fang ◽  
Yimin Lin ◽  
Rongzi Xv ◽  
Li Fu
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Water Oxidation ◽  
Hydrothermal Process ◽  
Energy Utilization ◽  
Hydrothermal Time ◽  
Metal Free ◽  
Preparation Conditions ◽  
Solar Energy Utilization ◽  
Photoelectrochemical Water Oxidation

Photoelectrochemical water splitting for hydrogen production is an ideal way for solar energy utilization. Herein, α-Fe2O3 was prepared by hydrothermal process and the precursor concentration, calcination temperature and hydrothermal time...

scholarly journals Dye–catalyst dyads for photoelectrochemical water oxidation based on metal-free sensitizers

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5311-5319
Author(s):  
Cristina Decavoli ◽  
Chiara L. Boldrini ◽  
Vanira Trifiletti ◽  
Sally Luong ◽  
Oliver Fenwick ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Faradaic Efficiency ◽  
Metal Free ◽  
Dye Sensitized ◽  
Photoelectrochemical Water Oxidation

Dye–catalyst dyads based on metal-free dyes were prepared for dye-sensitized photoanodes in photoelectrochemical water splitting, showing a top ranked faradaic efficiency for O2 generation up to 95%.

Electrochemical and photoelectrochemical water splitting with a CoOx catalyst prepared by flame assisted deposition

2020 ◽  
Vol 49 (3) ◽  
pp. 588-592 ◽  
Author(s):  
Fusheng Li ◽  
Ziqi Zhao ◽  
Hao Yang ◽  
Dinghua Zhou ◽  
Yilong Zhao ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxide Catalyst ◽  
Photoelectrochemical Water Splitting ◽  
Deposition Method ◽  
Photoelectrochemical Water Oxidation

A cobalt oxide catalyst prepared by a flame-assisted deposition method on the surface of FTO and hematite for electrochemical and photoelectrochemical water oxidation, respectively.

scholarly journals Nano-sized manganese oxides as biomimetic catalysts for water oxidation in artificial photosynthesis: a review

2012 ◽  
Vol 9 (75) ◽  
pp. 2383-2395 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Fahimeh Rahimi ◽  
Eva-Mari Aro ◽  
Choon-Hwan Lee ◽  
Suleyman I. Allakhverdiev
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Water Oxidation ◽  
Active Sites ◽  
Manganese Oxides ◽  
Metal Compounds ◽  
Functional Models ◽  
Current Densities ◽  
Conversion Efficiencies ◽  
Manganese Compounds

There has been a tremendous surge in research on the synthesis of various metal compounds aimed at simulating the water-oxidizing complex (WOC) of photosystem II (PSII). This is crucial because the water oxidation half reaction is overwhelmingly rate-limiting and needs high over-voltage (approx. 1 V), which results in low conversion efficiencies when working at current densities required for hydrogen production via water splitting. Particular attention has been given to the manganese compounds not only because manganese has been used by nature to oxidize water but also because manganese is cheap and environmentally friendly. The manganese–calcium cluster in PSII has a dimension of about approximately 0.5 nm. Thus, nano-sized manganese compounds might be good structural and functional models for the cluster. As in the nanometre-size of the synthetic models, most of the active sites are at the surface, these compounds could be more efficient catalysts than micrometre (or bigger) particles. In this paper, we focus on nano-sized manganese oxides as functional and structural models of the WOC of PSII for hydrogen production via water splitting and review nano-sized manganese oxides used in water oxidation by some research groups.

scholarly journals Synergies of co-doping in ultra-thin hematite photoanodes for solar water oxidation: In and Ti as representative case

RSC Advances ◽  
2020 ◽  
Vol 10 (55) ◽  
pp. 33307-33316
Author(s):  
Aadesh P. Singh ◽  
Camilla Tossi ◽  
Ilkka Tittonen ◽  
Anders Hellman ◽  
Björn Wickman
Keyword(s):  
Thin Film ◽  
Hydrogen Production ◽  
Solar Energy ◽  
Water Splitting ◽  
Water Oxidation ◽  
Representative Case ◽  
Solar Water ◽  
Co Doping ◽  
Pec Cells ◽  
Solar Water Oxidation

Solar energy induced water splitting in photoelectrochemical (PEC) cells is one of the most sustainable ways of hydrogen production. In this work, hematite (α-Fe2O3) thin film were modified by In3+ and Ti4+ co-doping for enhanced PEC performance.

TiO 2 Nanorods Co‐decorated with Metal‐Free Carbon Materials for Boosted Photoelectrochemical Water Oxidation

2020 ◽  
Vol 7 (3) ◽  
pp. 792-799 ◽  
Author(s):  
Weiqian Kong ◽  
Xiaofan Zhang ◽  
Binbin Chang ◽  
Yanzhen Guo ◽  
Yipeng Li ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Carbon Materials ◽  
Free Carbon ◽  
Metal Free ◽  
Photoelectrochemical Water Oxidation

Band gap tuning to improve the photoanodic activity of ZnInxSy for photoelectrochemical water oxidation

2019 ◽  
Vol 9 (23) ◽  
pp. 6769-6781 ◽  
Author(s):  
Mamta Devi Sharma ◽  
Chavi Mahala ◽  
Mrinmoyee Basu
Keyword(s):  
Band Gap ◽  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Elemental Doping ◽  
Band Gap Tuning ◽  
Photoelectrochemical Water Oxidation

Elemental doping and band gap tuning of ZnInxSy result in enhanced photoelectrochemical water splitting activity.

Design of noble metal free hierarchical VS2 onto WO3 nanoflakes as an effective heterojunction strategy for enhanced photoelectrochemical water oxidation

2019 ◽  
Vol 3 (12) ◽  
pp. 3481-3488
Author(s):  
Ching Thian Moi ◽  
Gaurangi Gogoi ◽  
Tushar Kanta Sahu ◽  
Devipriya Gogoi ◽  
Nageswara Rao Peela ◽  
...  
Keyword(s):  
Noble Metal ◽  
Water Oxidation ◽  
Metal Free ◽  
Photoelectrochemical Water Oxidation

WO3–VS2 is a promising photoanodic material for photoelectrochemical water oxidation.

A graphene oxide–molecular Cu porphyrin-integrated BiVO4 photoanode for improved photoelectrochemical water oxidation performance

2020 ◽  
Vol 8 (7) ◽  
pp. 4062-4072 ◽  
Author(s):  
Chunjiang Xu ◽  
Wanjun Sun ◽  
Yinjuan Dong ◽  
Congzhao Dong ◽  
Qiyu Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Water Splitting ◽  
Water Oxidation ◽  
Bismuth Vanadate ◽  
Photoelectrochemical Water Splitting ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation

Monoclinic bismuth vanadate (BiVO4), as a rising star in light-catching materials, has been researched in many fields, such as photoelectrochemical water splitting.

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