Water-soluble titanium-polyoxomolybdate with external μ3 bridging oxygen coordination on a lacunary Keggin structure

2020 ◽  
Vol 56 (7) ◽  
pp. 1097-1100 ◽  
Author(s):  
Ming Xu ◽  
Ting Wang ◽  
Fengyan Li ◽  
Wenjuan Xu ◽  
Yue Zheng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Soluble ◽  
Keggin Structure ◽  
Oxygen Coordination

The first water-soluble titanium-containing polyoxomolybdate was synthesized and structurally characterized, showing photocatalytic activity in benzaldehyde oxidation.

Hydrothermal Synthesis of Nanosized Titania Photocatalysts Using Novel Water-Soluble Titanium Complexes

2007 ◽  
Vol 124-126 ◽  
pp. 723-726 ◽  
Author(s):  
Makoto Kobayashi ◽  
Koji Tomita ◽  
Valery Petrykin ◽  
Shu Yin ◽  
Tsugio Sato ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Specific Surface ◽  
Single Phase ◽  
Visible Region ◽  
Water Soluble ◽  
No Oxidation ◽  
Nano Particles ◽  
Titanium Complexes ◽  
Uv Visible

Highly crystalline titania nano-particles were synthesized by hydrothermal method using novel stable water-soluble titanium complexes. It was confirmed that single phase anatase, rutile and brookite, which can be rarely synthesized as a single phase, can be obtained by varying the ligand in the complex and pH of the aqueous solution. TEM observations and BET specific surface area measurements had shown that these samples consisted of nanosized particles of 5~200 nm and had high specific surface areas of 25~150 m2/g. According to UV-visible diffuse reflectance spectra, these titania samples absorbed light in the visible region (λ > 400 nm). Photocatalytic activities in NO oxidation reaction exhibited by synthesized titania powders under the irradiation by UV- visible light were higher than the activity of the commercial TiO2 photocatalyst P25 (Degussa). Especially, under illumination by only visible light of above 510 nm wavelength, photocatalytic activity of the obtained specimens exceeded that of P25 more than four times. We also clearly demonstrated that single phase brookite had high photocatalytic activity for NO oxidation.

Effect of amino-containing polymers on the photocatalytic activity of water-soluble porphyrin sensitizers

2007 ◽  
Vol 416 (1) ◽  
pp. 205-206
Author(s):  
N. N. Glagolev ◽  
N. A. Aksenova ◽  
S. Z. Rogovina ◽  
A. B. Solov’eva
Keyword(s):  
Photocatalytic Activity ◽  
Water Soluble ◽  
Water Soluble Porphyrin

Enhancement of the Photocatalytic Activity of TiO2Nanoparticles by Water-Soluble Complexes of Carotenoids†

2010 ◽  
Vol 114 (45) ◽  
pp. 14200-14204 ◽  
Author(s):  
Nikolay E. Polyakov ◽  
Tatyana V. Leshina ◽  
Elizaveta S. Meteleva ◽  
Alexander V. Dushkin ◽  
Tatyana A. Konovalova ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Soluble ◽  
Soluble Complexes

The influence of amphiphilic polymers on the photocatalytic activity of water-soluble porphyrin photosensitizers

2011 ◽  
Vol 85 (5) ◽  
pp. 871-875 ◽  
Author(s):  
Yu. A. Gorokh ◽  
N. A. Aksenova ◽  
A. B. Solov’eva ◽  
V. A. Ol’shevskaya ◽  
A. V. Zaitsev ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Amphiphilic Polymers ◽  
Water Soluble ◽  
Porphyrin Photosensitizers ◽  
Water Soluble Porphyrin

Photocatalytic activity of water-soluble tetrapyrrole compounds in the presence of amino-containing polymers

2006 ◽  
Vol 80 (S1) ◽  
pp. S72-S76 ◽  
Author(s):  
N. N. Glagolev ◽  
S. Z. Rogovina ◽  
A. B. Solov’eva ◽  
N. A. Aksenova ◽  
S. L. Kotova
Keyword(s):  
Photocatalytic Activity ◽  
Water Soluble

Synthesis of charged triazatetrabenzcorroles, phthalocyanines and tetrapyridylporphyrin, and their activities in the co-sensitized photooxidation of 2-mercaptoethanol

2009 ◽  
Vol 13 (03) ◽  
pp. 346-357 ◽  
Author(s):  
Łukasz Łapok ◽  
Günter Schnurpfeil ◽  
Robert Gerdes ◽  
Sergiu M. Gorun ◽  
Olga Suvorova ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Model Reaction ◽  
Single Component ◽  
Water Soluble ◽  
Alkaline Solutions ◽  
Remarkable Improvement

Water soluble zwitterionic, as well as cationic and anionic triazatetrabenzcorroles (TBC), phthalocyanines (Pc) and a porphyrin (P) were synthesized and their sensitizer properties investigated. Monomerization of the sensitizers, including their mixtures, in the presence of a detergent was used as a basis for studying the fundamental effect of co-sensitization upon a known model reaction, viz. the photooxidation of 2-mercaptoethanol in aqueous alkaline solutions. Compared to single-component sensitizers, a remarkable improvement of the photocatalytic activity is observed in the case of co-sensitization employing molecules that absorb in different Q and Soret regions.

scholarly journals Coordination Compounds Featuring Non-Toxic Chiral 1,4-Dicarboxylic Acids and Copper(II)

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 485
Author(s):  
Marius Kremer ◽  
Jan van Leusen ◽  
Ulli Englert
Keyword(s):  
Tartaric Acid ◽  
Coordination Compounds ◽  
Divalent Cations ◽  
Dicarboxylic Acids ◽  
Water Soluble ◽  
Environmentally Benign ◽  
Mononuclear Complexes ◽  
Oxygen Coordination ◽  
Jahn Teller ◽  
Copper Cations

Six new coordination compounds of copper cations and 1,4-dicarboxylic acids have been synthesized and structurally investigated. Aspartic acid (H2asp), enantiopure, racemic and meso tartaric acid (H2tart), di-para-toluyltartaric acid (H2dptta) and dibenzoyltartaric acid (H2dbta) represent environmentally benign water-soluble proligands which may be deprotonated for oxygen coordination. Chelating ligands such as tetramethylethylenediamine (TMEDA) and 2-aminomethylpyridine (AMPY) efficiently reduce the dimensionality of the target compounds, and additional aqua ligands complete the coordination environments. In this line of argument, the discrete mononuclear complexes [Cu(AMPY)(asp)(H2O)] and [Cu(Hdbta)2(H2O)4] were obtained; for the latter, only a preliminary structure model can be presented which, however, agrees with the powder diffraction pattern of the bulk. From enantiopure and racemic tartaric acid and TMEDA the closely related chain polymers [CuII(H2tart)(TMEDA)(H2O)2)]n were obtained; the racemic compound consists of individual homochiral strands of opposite chirality. The high steric demand of di-para-toluyltartaric acid leads to one-dimensional [Cu(dptta)(EtOH)(H2O)2]n with coordinated ethanol (EtOH) in the distant Jahn–Teller site of the coordination sphere. Cu(II), meso-tartaric acid and TMEDA aggregate to a trinuclear coordination compound [CuII2CuI(H2tart)(Htart)(TMEDA)2]. Its peripheral cations show the expected Jahn–Teller geometry of Cu(II), but the unambiguous assignment of the oxidation state +I for central cation required susceptibility measurements: their results prove the presence of only two and only very weakly interacting divalent cations, separated by a diamagnetic center.

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