Enhanced Photocatalytic Performance of Porphyrin/Phthalocyanine and Bis(4‐pyridyl)pyrrolidinofullerene modified Titania

Abstract

Zinc(II), copper(II) and cobalt(II) metallated porphyrins/phthalocyanines and bis(4-pyridyl) pyrrolidinofullerene (9) were used in a supramolecular approach for the sensitization of titania. Spectral properties of the chromophores were examined in the solid state showing strong absorptions at 700 and 800 nm for porphyrins and phthalocyanines, respectively. The interaction between the chromophores and a dual ligand was investigated spectroscopically. Titania-based composites sensitized with 9 and cobaltous porphyrin exhibited the highest photocatalytic activity against both phenol and methylene blue under solar irradiation. Photodegradation intermediates were determined based on LC-UV-Vis-MS analysis. It is expected that the composites will be applied for remediation of aqueous environmental samples from transparent and colorful pollutants.[a] Dr.

Recent Advances in Carbonaceous Photocatalysts with Enhanced Photocatalytic Performances: A Mini Review

“…On the other hand, the fullerene derivatives could also be utilized to improve the photocatalytic performance of semiconductors. For example, Echegoyen et al [140] recently explored the application of porphyrin/phthalocyanine fullerene complexes in a photocatalytic system with TiO 2 . In their study, the bis(4-pyridyl)pyrrolidinofullerene was used as a dual ligand for a supramolecular approach to attach porphyrins and phthalocyanines on the surface of TiO 2 to make it sensitized.…”

Applications of Photoinduced Phenomena in Supramolecularly Arranged Phthalocyanine Derivatives: A Perspective

“…Furthermore, the authors evidenced that the proposed dyad gave CO 2 four times larger than that of well-known inorganic commercial WO 3 when the systems were illuminated by 600 nm wavelength. A further confirmation of the most performing photocatalytic features of CoPc, if compared with other metallated Pcs, is given in [130] where the authors supramolecularly assembled dyads of Zn, Cu, Co and free-based Pcs (and porphyrins) with a bipyridylfulleropyrrolidine. The obtained adducts were used to decorate the titanium dioxide surface and the efficiency of phenol photocatalytic degradation was evaluated for each system.…”

Nanostructural catalyst: metallophthalocyanine and carbon nano-onion with enhanced visible-light photocatalytic activity towards organic pollutants

“…[1][2][3] Various systems have been studied and employed as photocatalysts in the past few decades. 4,5 Among these studied photocatalysts, carbon materials, [6][7][8] , organic derivatives or composites, [9][10][11][12][13] metal oxides, 14 inorganic nanoparticles and nanocrystals 15,16 and hybrid materials combining two or more components with different chemical natures have been used. 3,14,17,18 Oen, phthalocyanines (Pcs), derivatives of the aromatic tetraazaporphyrins, also appear among these systems.…”