Antenna Effect in BODIPY-(Zn)Porphyrin Entities Promotes H2 Evolution in Dye-Sensitized Photocatalytic Systems

2021 ◽  
Author(s):  
Vasilis Nikolaou ◽  
Georgios Charalambidis ◽  
Georgios Landrou ◽  
Emmanouil Nikoloudakis ◽  
Aurélien Planchat ◽  
...  
Keyword(s):  
H2 Evolution ◽  
Antenna Effect ◽  
Dye Sensitized

Influence of Ru(II) Bipyridyl Complex on the Photocatalytic H2 Evolution over TiO2 Nanoparticles with Mesostructures

2008 ◽  
Vol 47-50 ◽  
pp. 825-828 ◽  
Author(s):  
Tian You Peng ◽  
Ding Ning Ke ◽  
Chun Wu ◽  
Cai Ping ◽  
Liang Ma ◽  
...  
Keyword(s):  
Visible Light ◽  
Dynamic Equilibrium ◽  
H2 Production ◽  
Electron Donors ◽  
H2 Evolution ◽  
Conjugation System ◽  
Antenna Effect ◽  
Dye Sensitized ◽  
Sensitization Process ◽  
Bipyridyl Complex

H2 production over dye-sensitized Pt/TiO2 nanoparticles with mesostructures under visible light was investigated by using methanol as electron donors. Three types of Ru(II) bipyridyl complexes, which can be attached to Pt/m-TiO2 with different linkage modes, show different photosensitization. The dye tightly linked with m-TiO2 has better durability but the lowest H2 evolution efficiency, whereas the loosely attached dyes possess higher H2 evolution efficiency and preferable durability. It seems that the dynamic equilibrium between the linkage of ground state dye with TiO2 and the divorce of oxidization state dye from the surfaces plays a crucial role in the photochemical behavior during photocatalyst sensitization process. The binuclear Ru(II) shows a better photosensitization in comparison with mono- nuclear Ru(II) dyes due to its large conjugation system and “antenna effect”, which, in turn, improve the visible light harvesting and electron transfer between the dye and TiO2.

Photosensitization of Ruthenium(II) Complex on Titania for Photocatalytic H2 Evolution Under Visible-Light Irradiation

2008 ◽  
Author(s):  
Tianyou Peng ◽  
Ke Dai ◽  
Huabing Yi ◽  
Dingning Ke ◽  
Ping Cai
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Dynamic Equilibrium ◽  
Irradiation Time ◽  
Light Irradiation ◽  
H2 Evolution ◽  
Conjugation System ◽  
Antenna Effect ◽  
Dye Sensitized ◽  
Photocatalytic H2 Evolution

Hydrogen production over dye-sensitized Pt/P25 under visible-light irradiation was investigated by using methanol or TEOA as an electron donor. The binuclear Ru(II) dye (Ru2(bpy)4L1-PF6) shows the best photosensitization in both sacrificial reagent solutions due to its larger conjugation system and “antenna effect”, which is loosely linked with TiO2 and exhibits more steady and higher increases in H2 evolution upon prolonging the irradiation time in comparison with the tightly linked N719. The dynamic equilibrium between the linkage of ground dye and divorce of oxidized dye from TiO2 can enhance the electron injection and hinder the backward transfer, and then improve the H2 evolution efficiency.

Enhancing H2 evolution and molecular oxygen activation via dye sensitized BiOBr0.9I0.1 under visible light

2020 ◽  
Vol 580 ◽  
pp. 1-10 ◽  
Author(s):  
Liping Han ◽  
Yuewei Lv ◽  
Bo Li ◽  
Hao Wen ◽  
Hongwei Huang ◽  
...  
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
Oxygen Activation ◽  
H2 Evolution ◽  
Dye Sensitized

Effect of Water/Acetonitrile Ratio on Dye-Sensitized Photocatalytic H2 Evolution under Visible Light Irradiation

2004 ◽  
Vol 127 (3) ◽  
pp. 413-416 ◽  
Author(s):  
Ryu Abe ◽  
Kazuhiro Sayama ◽  
Hideki Sugihara
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Energy Gap ◽  
Light Irradiation ◽  
Acetonitrile Solution ◽  
H2 Evolution ◽  
Tio2 Photocatalysts ◽  
Dye Sensitized ◽  
Highest Occupied Molecular Orbital ◽  
Splitting System

H 2 production in a water-acetonitrile solution containing iodide as an electron donor was investigated over dye-sensitized Pt∕TiO2 photocatalysts under visible light irradiation, as a potential water-splitting system based on an iodide redox mediator. The rates of H2 evolution decreased with increasing proportion of water in the solutions, because of a decrease in the energy gap between the redox potential of I3−∕I− and the highest occupied molecular orbital levels of the dyes, which decreases the efficiency of electron transfer from I− to dye.

Amplification of light collection in solid-state dye-sensitized solar cells via the antenna effect through supramolecular assembly

2015 ◽  
Vol 17 (15) ◽  
pp. 9910-9918 ◽  
Author(s):  
Bilel Louahem M’Sabah ◽  
Mourad Boucharef ◽  
Julien Warnan ◽  
Yann Pellegrin ◽  
Errol Blart ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Supramolecular Assembly ◽  
Supramolecular Interactions ◽  
Light Collection ◽  
Antenna Effect ◽  
Efficient Energy Transfer ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Efficient energy transfer steps from an organic antenna bound via supramolecular interactions to an organic dyad are demonstrated within solid-state dye-sensitized solar cells.

Highly active dye-sensitized photocatalytic H2 evolution catalyzed by a single-atom Pt cocatalyst anchored onto g-C3N4 nanosheets under long-wavelength visible light irradiation

2018 ◽  
Vol 42 (17) ◽  
pp. 14083-14086 ◽  
Author(s):  
Yuan Xue ◽  
Yonggang Lei ◽  
Xiangyu Liu ◽  
Yanan Li ◽  
Wanan Deng ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Single Atom ◽  
Eosin Y ◽  
H2 Evolution ◽  
Long Wavelength ◽  
Dye Sensitized ◽  
Highly Active ◽  
Photocatalytic H2 Evolution

A single-atom Pt cocatalyst anchored onto g-C3N4 nanosheets could efficiently catalyze H2 evolution from an Eosin Y-sensitized system under 520 nm irradiation.

Panchromatic Trichromophoric Sensitizer for Dye-Sensitized Solar Cells Using Antenna Effect

2011 ◽  
Vol 13 (15) ◽  
pp. 3944-3947 ◽  
Author(s):  
Julien Warnan ◽  
Fabien Buchet ◽  
Yann Pellegrin ◽  
Errol Blart ◽  
Fabrice Odobel
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Antenna Effect ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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