An unprecedented high nuclearity catecholato-based Ti(iv)-architecture bearing labile pyridine ligands

2014 ◽  
Vol 43 (9) ◽  
pp. 3416-3419 ◽  
Author(s):  
Clément Chaumont ◽  
Pierre Mobian ◽  
Marc Henry
Keyword(s):  
Visible Light ◽  
Coordination Polymers ◽  
Light Absorption ◽  
Absorption Properties ◽  
Compound A ◽  
Visible Light Absorption ◽  
Pyridine Ligands

The original behaviour in solution associated with the visible light absorption properties of the S4-symmetry [Ti10O12(cat)8(py)8] complex makes this compound a good candidate for generating titanium-based coordination polymers.

Tuning visible-light absorption properties of Ru–diacetylide complexes: simple access to colorful efficient dyes for DSSCs

2015 ◽  
Vol 3 (35) ◽  
pp. 18256-18264 ◽  
Author(s):  
Samuel De Sousa ◽  
Siliu Lyu ◽  
Laurent Ducasse ◽  
Thierry Toupance ◽  
Céline Olivier
Keyword(s):  
Solar Cell ◽  
Visible Light ◽  
Light Absorption ◽  
Dye Sensitized Solar Cell ◽  
Absorption Properties ◽  
Visible Light Absorption ◽  
Color Palette ◽  
Dye Sensitized

An attractive color palette of red, violet and blue-green chromophores was prepared for dye-sensitized solar cell applications. The chromophores are used in single-dye and co-sensitized devices.

scholarly journals BiVO3 : A Bi-based material with promising uv-visible light absorption properties

2017 ◽  
Vol 96 (16) ◽  
Author(s):  
C. S. Praveen ◽  
Lorenzo Maschio ◽  
Michel Rérat ◽  
V. Timon ◽  
M. Valant
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Absorption Properties ◽  
Visible Light Absorption ◽  
Uv Visible

Origin of significant visible-light absorption properties of Mn-doped TiO2 thin films

2012 ◽  
Vol 60 (5) ◽  
pp. 1974-1985 ◽  
Author(s):  
X.H. Xia ◽  
L. Lu ◽  
A.S. Walton ◽  
M. Ward ◽  
X.P. Han ◽  
...  
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Light Absorption ◽  
Tio2 Thin Films ◽  
Absorption Properties ◽  
Visible Light Absorption ◽  
Doped Tio2 ◽  
Mn Doped

Tuning the properties of the metal–organic framework UiO-67-bpy via post-synthetic N-quaternization of pyridine sites

2016 ◽  
Vol 45 (20) ◽  
pp. 8614-8621 ◽  
Author(s):  
Lei Xu ◽  
Yanping Luo ◽  
Lin Sun ◽  
Shan Pu ◽  
Min Fang ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Organic Dyes ◽  
Metal Organic Framework ◽  
Absorption Properties ◽  
Visible Light Absorption ◽  
Anionic Dye ◽  
Metal Organic ◽  
Organic Framework

N-Quaternization of pyridine sites in UiO-67-bpy affords a cationic MOF UiO-67-bpy-Me with faster and improved anionic dye and CO2adsorption, and extended visible-light absorption properties, which make UiO-67-bpy-Me more efficient in photodegrading organic dyes.

Ti 5 O 9 in TiO 2 nanotube array activates the visible-light absorption properties significantly

2014 ◽  
Vol 146 ◽  
pp. 186-193 ◽  
Author(s):  
Pin Lv ◽  
Hairui Sun ◽  
Yannan Mu ◽  
Shi Su ◽  
Yanli Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Absorption Properties ◽  
Nanotube Array ◽  
Visible Light Absorption

Structural, elastic, electronic, and optical properties of the tricycle-like phosphorene

2017 ◽  
Vol 19 (3) ◽  
pp. 2245-2251 ◽  
Author(s):  
Yang Zhang ◽  
Zhi-Feng Wu ◽  
Peng-Fei Gao ◽  
Dang-Qi Fang ◽  
Er-Hu Zhang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
Structural Stability ◽  
Light Absorption ◽  
Light Harvesting ◽  
Band Gaps ◽  
Great Promise ◽  
Absorption Properties ◽  
Visible Light Absorption ◽  
Nanoelectronic Devices

Tricycle-like phosphorenes with good structural stability, indirect band gaps, flexible properties, and good visible light absorption properties hold great promise for applications in the field of visible light harvesting and flexible nanoelectronic devices.

scholarly journals Titanium oxo-clusters derivatized from the Ti10O12(cat)8(py)8 complex: structural investigation and spectroscopic studies of light absorption

2016 ◽  
Vol 45 (21) ◽  
pp. 8760-8769 ◽  
Author(s):  
Clément Chaumont ◽  
Alain Chaumont ◽  
Nathalie Kyritsakas ◽  
Pierre Mobian ◽  
Marc Henry
Keyword(s):  
Visible Light ◽  
Density Of States ◽  
Light Absorption ◽  
Structural Investigation ◽  
Spectroscopic Studies ◽  
Electronic Transitions ◽  
Visible Light Absorption ◽  
Pyridine Ligands ◽  
Pyridine Complex ◽  
Complex Structural

Three deep-red catecholato-based titanium oxo-clusters are obtained from the Ti10O12(cat)8(py)8 (py = pyridine) complex. Calculations enable us to assign the electronic transitions responsible for the visible light absorption and highlight that pyridine ligands influence the density of states plot.

Impact of Rutile Fraction on TiO2 Visible-Light Absorption and Visible-Light-Induced Photocatalytic Activity

2018 ◽  
Author(s):  
David Maria Tobaldi ◽  
Luc Lajaunie ◽  
ana caetano ◽  
nejc rozman ◽  
Maria Paula Seabra ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Solid Phase ◽  
Diffraction Method ◽  
Band Alignment ◽  
Quantitative Phase Analysis ◽  
Transmission Microscopy ◽  
Visible Light Absorption ◽  
X Ray

<div>Titanium dioxide is by far the most utilised semiconductor material for photocatalytic applications. Still, it is transparent to visible-light. Recently, it has been proved that a type-II band alignment for the rutile−anatase mixture would improve its visible-light absorption.</div><div>In this research paper we thoroughly characterised the real crystalline and amorphous phases of synthesised titanias – thermally treated at different temperatures to get distinct ratios of anatase-rutile-amorphous fraction – as well as that of three commercially available photocatalytic nano-TiO2. </div><div>The structural characterisation was done via advanced X-ray diffraction method, namely the Rietveld-RIR method, to attain a full quantitative phase analysis of the specimens. The microstructure was also investigated via an advanced X-ray method, the whole powder pattern modelling. These methods were validated combining advanced aberration-corrected scanning transmission microscopy and high-resolution electron energy-loss spectroscopy. The photocatalytic activity was assessed in the liquid- and gas-solid phase (employing rhodamine B and 4-chlorophenol, and isopropanol, respectively, as the organic substances to degrade) using a light source irradiating exclusively in the visible-range.</div><div>Optical spectroscopy showed that even a small fraction of rutile (2 wt%) is able to shift to lower energies the apparent optical band gap of an anatase-rutile mixed phase. But is this enough to attain a real photocatalytic activity promoted by merely visible-light?</div><div>We tried to give a reply to that question.</div><div>Photocatalytic activity results in the liquid-solid phase showed that a high surface hydroxylation led to specimen with superior visible light-induced catalytic activity (i.e. dye and ligand-to-metal charge transfer complexes sensitisation effects). That is: not photocatalysis <i>sensu-strictu</i>.</div><div>On the other hand, the gas-solid phase results showed that a higher amount of the rutile fraction (around 10 wt%), together with less recombination of the charge carriers, were more effective for an actual photocatalytic oxidation of isopropanol.</div>

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