scholarly journals Immobilising a cobalt cubane catalyst on a dye-sensitised TiO2 photoanode via electrochemical polymerisation for light-driven water oxidation

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 4102-4107 ◽  
Author(s):  
Jialing Li ◽  
Yi Jiang ◽  
Qian Zhang ◽  
Xiaochen Zhao ◽  
Na Li ◽  
...  

A cobalt cubane catalyst Co4O4(O2CMe)4(4-vinylpy)4 was immobilised on a dye-sensitized TiO2 electrode via electrochemical polymerization for light-driven water oxidation.

Author(s):  
Ayodeji.Olalekan Salau ◽  
Ademola Stanford Olufemi ◽  
Gabriel Oluleye ◽  
Victor Adewale Owoeye ◽  
Isiaka Ismail

2021 ◽  
Vol 22 (2) ◽  
pp. 53
Author(s):  
Matius Nata Pakpahan ◽  
Aldi Hartanto ◽  
Yonatan Davidson Gultom ◽  
Nur Fadhilah ◽  
Doty Dewi Risanti

A SYNERGISTIC ABSORPTION AND PLASMONIC EFFECT OF SiO2@Au@TiO2 IN A TiO2 PHOTOANODE FOR DYE-SENSITIZED SOLAR CELLS. A method for increasing the visible-light harvesting of a TiO2 anatase photoanode in dye-sensitized solar cells by incorporating plasmonic nanostructures was developed. Sidoarjo mud as the SiO2 source was used to successfully synthesized core/multishell SiO2@Au@TiO2, with varying amounts of Au (60, 90, and 120 mL). In addition, the core/multishell fractions in TiO2 paste were varied, i.e., 0.5%, 1%, and 5%. The UV–Vis spectrum shows that a more ripple spectrum at higher wavelengths is obtained with increasing Au content, as suggested by the presence of large Au nanoparticles; however, a similar value of efficiency is observed for all sample variations studied compared to a pure TiO2 photoanode. The incident photon-to-current efficiency reveals that all photoanodes containing the core/multishell SiO2@Au@TiO2 studied show somewhat broader and enhanced spectra for all studied wavelengths compared to the pure TiO2 photoanode, resulting from the synergistic effect between plasmonic nanostructures and the presence of silica that boost the absorption to higher wavelengths.


RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33433-33442 ◽  
Author(s):  
Samim Sardar ◽  
Srabanti Ghosh ◽  
Hynd Remita ◽  
Prasenjit Kar ◽  
Bo Liu ◽  
...  

Enhanced photovoltage in the presence of silver modified TiO2 nanocomposites as a photoanode in dye-sensitized solar cells.


2022 ◽  
Vol 891 ◽  
pp. 162040
Author(s):  
Ikhtiar Ahmad ◽  
Rashida Jafer ◽  
Syed Mustansar Abbas ◽  
Nisar Ahmad ◽  
Ata-ur-Rehman ◽  
...  

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yong Zhu ◽  
Degao Wang ◽  
Qing Huang ◽  
Jian Du ◽  
Licheng Sun ◽  
...  

Abstract Understanding and controlling the properties of water-splitting assemblies in dye-sensitized photoelectrosynthesis cells is a key to the exploitation of their properties. We demonstrate here that, following surface loading of a [Ru(bpy)3]2+ (bpy = 2,2′-bipyridine) chromophore on nanoparticle electrodes, addition of the molecular catalysts, Ru(bda)(L)2 (bda  =  2,2′-bipyridine-6,6′-dicarboxylate) with phosphonate or pyridyl sites for water oxidation, gives surfaces with a 5:1 chromophore to catalyst ratio. Addition of the surface-bound phosphonate derivatives with L = 4-pyridyl phosphonic acid or diethyl 3-(pyridin-4-yloxy)decyl-phosphonic acid, leads to well-defined surfaces but, following oxidation to Ru(III), they undergo facile, on-surface dimerization to give surface-bound, oxo-bridged dimers. The dimers have a diminished reactivity toward water oxidation compared to related monomers in solution. By contrast, immobilization of the Ru-bda catalyst on TiO2 with the 4,4′-dipyridyl anchoring ligand can maintain the monomeric structure of catalyst and gives relatively stable photoanodes with photocurrents that reach to 1.7 mA cm−2 with an optimized, applied bias photon-to-current efficiency of 1.5%.


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