Synthesis of polymeric and low molecular weight phthalocyanines from nitriles and metal carbonyls on SiO₂ and TiO₂ and catalytic activities in the sulfide oxidation

Abstract

ABSTRACT:A new method for coatings of polymeric phthalocyanines and for comparison also of low molecular weight phthalocyanine metal complexes (W, Cr, Mo, Co) on quartz and titanium dioxide was developed by the reaction of metal carbonyls adsorbed on the carriers with tetracarbonitriles or phthalonitrile. By UV-vis or IR spectra the formation of structural uniform polymeric phthalocyanines on the carriers is established. The compounds are used then to compare their catalytic and photocatalytic activities in the oxidation of sulfide as test reaction.

Band gap effect on the photocatalytic activity of supramolecular structures obtained by entrapping photosensitizers in different inorganic supports

“…Many studies have already reported in this respect. [25][26][27][28][29][30][31] However, in our best knowledge, no report in photo-decomposition of dipropyl sulfide using solid embedded metal-phthalocyanines or triphenylpyrylium ion has been reported till now in the literature.…”

Rapid degradation of bisphenol A using air as the oxidant catalyzed by polynuclear phthalocyanine complexes under visible light irradiation

“…Various photosensitizers, such as dyes, porphyrines and phthalocyanines, have been used to be photosensitizers to oxidize thiols, sulfide, thioethers, phenol and monochlorophenols [22][23][24][25][26] Recently, polynuclear metal phthalocyanine complexes have attracted attentions because of their increased catalytic properties compared to mononuclear one [27,28]. Some polynuclear cobalt phthalocyanine complexes exhibit a much higher specific activity to activate the oxygen than the mononuclear compound in the oxidation of sulfide [29]. As the photocatalyst in the photooxidation of sulfide, thiosulfate, and phenol, the catalytic activity per mole of the polynuclear zinc and aluminium complexes is two to five times higher than that of the respective mononuclear phthalocyanine complexes [30,31].…”

Photoelectrocatalytic degradation of blistering agent sulfur mustard to non-blistering substances using pPy/NiOBPC nanocomposite

“…Moreover, sulfur-containing compounds, such as mercaptans, alkali sulfides, alkali sulfites and alkali thiosulfates are byproducts of industrial processes and these are the persistent pollutants of waste and natural waters [21,22]. The complete oxidation of sulfur-containing compounds (using metal oxide and semiconductor oxide), before discharging them into waterways, was suggested to be a possible solution for environmental pollution problems [23][24][25][26]. As an alternative to inorganic semiconductors, metallophthalocyanines (MPcs) were used to produce photocatalytic systems [27][28][29][30].…”