Pure organic quinacridone dyes as dual sensitizers in tandem photoelectrochemical cells for unassisted total water splitting

2021 ◽  
Author(s):  
Jianli Hua ◽  
Luze Shen ◽  
Shicong Zhang ◽  
Haoran Ding ◽  
Fushuang Niu ◽  
...  
Keyword(s):  
Dicarboxylic Acid ◽  
Water Splitting ◽  
Organic Dye ◽  
Photoelectrochemical Cells ◽  
Side Chains ◽  
Total Water ◽  
Pyridine Dicarboxylic Acid

Pure organic dye QAP-C8 based on quinacridone (QA) with octyl side chains as the donor and pyridine dicarboxylic acid (PDA) as the acceptor was firstly used in both the photoanode...

Organic Dye-Sensitized Tandem Photoelectrochemical Cell for Light Driven Total Water Splitting

2015 ◽  
Vol 137 (28) ◽  
pp. 9153-9159 ◽  
Author(s):  
Fusheng Li ◽  
Ke Fan ◽  
Bo Xu ◽  
Erik Gabrielsson ◽  
Quentin Daniel ◽  
...  
Keyword(s):  
Water Splitting ◽  
Organic Dye ◽  
Photoelectrochemical Cell ◽  
Total Water ◽  
Dye Sensitized

scholarly journals Dye-sensitised Photocatalyst for Photocatalytic Whole Water Splitting to Produce Hydrogen in a Twin Photoreactor

2021 ◽  
Vol 17 (2) ◽  
pp. 47-72
Author(s):  
Yi-Shan Huang ◽  
◽  
Chao-Wei Huang ◽  
Van-Huy Nguyen ◽  
Yen-Han Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Light Absorption ◽  
Physical Adsorption ◽  
Pure Water ◽  
Absorption Capacity ◽  
Organic Dye ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Silane Coupling ◽  
Electron Mediators

Organic dye-sensitised SrTiO3:Rh and WO3 were served as H2 catalysts and O2 catalysts in a Z-scheme system to conduct photocatalytic pure water splitting. To enhance the light absorption capacity, the composites of organic dye (N3, N719, Z907, black dye, C101, and K19) and SrTiO3:Rh were synthesised via physical adsorption and then verified by the performance of photocatalytic hydrogen evolution. Among these dyes, N3-SrTiO3:Rh revealed visible light absorption and exhibited the best photocatalytic activity. Therefore, N3 dye was adopted, and silane coupling agents were used to form chemical bonding with SrTiO3:Rh. Furthermore, the photocatalytic pure water splitting of N3-SrTiO3:Rh was investigated in a single reactor, and a twin photoreactor with Fe2+ and Fe3+ ions served as the electron mediators, respectively. The highest quantum efficiency can reach 0.0259% in a twin reactor when compared with the single reactor (0.0052%) because of the improvement in the light absorption from N3 and inhibition of the backward reaction of water splitting. Consequently, organic dye-sensitised photocatalysts are highly effective and eco-friendly in conducting photocatalytic pure water splitting.

Directly grown TiO2 nanotubes on carbon nanofibers for photoelectrochemical water splitting

MRS Advances ◽  
2016 ◽  
Vol 1 (46) ◽  
pp. 3145-3150 ◽  
Author(s):  
Hyungkyu Han ◽  
Stepan Kment ◽  
Anandarup Goswami ◽  
Ondrej Haderka ◽  
Radek Zboril
Keyword(s):  
Water Splitting ◽  
Carbon Nanofibers ◽  
Carbon Nanostructures ◽  
Carbon Nanofiber ◽  
Anatase Phase ◽  
Photoelectrochemical Cells ◽  
High Electron ◽  
Electrospinning Technique ◽  
Intimate Contact ◽  
Electron Hole Pair

ABSTRACTA variety of Titanium dioxide (TiO2) phases and nanostructures have been explored for their applications in photoelectrochemical cells (PECs) for solar-driven water splitting. In this case, anatase phase and TiO2 nanotubes offer significant advantages especially for PEC-based applications. Though, significant efforts have already been engaged to combine the advantages from both the fields, poor activation and the high electron-hole pair recombination rate of TiO2 electrodes, originating from intrinsic physicochemical properties, limits its practical use. As an alternative, we report directly grown TiO2 nanotubes (synthesized on Fluorine doped Tin Oxide (FTO) via facile electrospinning technique) on carbon nanofibers, using hydrothermal method. The hierarchical branch type configuration has an intimate contact between the TiO2 nanotube and carbon nanofiber backbone and offers higher photocatalytic activity than their respective individual components (namely TiO2 nanotubes and carbon nanostructures).

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