Multi-wall carbon nanotube supported manganese(III)tetraphenylporphyrin: efficient catalysts for epoxidation of alkenes with NaIO₄ under various reaction conditions

One-pot synthesis of manganese porphyrin covalently functionalized graphene oxide for enhanced photocatalytic hydrogen evolution

“…Graphene oxide shows an absorption peak at 269 nm, which agrees with the value reported by the literature [53]. MnTPPCl exhibits three strong Soret bands centered at 390, 411 and 480 nm owing to the p-p* transition, and two weak Q-bands centered at 577 and 612 nm, which are in agreement with other observations [54,55]. The GO-MnTPP composite has major absorption bands of both GO and MnTPP moieties centered at 271, 371, 396, 474, 581 and 619 nm.…”

High Performance of Manganese Porphyrin Sensitized p-Type CuFe2O4 Photocathode for Solar Water Splitting to Produce Hydrogen in a Tandem Photoelectrochemical Cell

“…Figure 2 displays the UV-vis diffuse reflectance spectra of the prepared samples. From the figure, we can see that CuFe 2 O 4 demonstrates a wide light absorption throughout the whole UV-vis region, which is in agreement with previous reports [32,33], and the MnTPP dye exhibits a strong Soret band at 455 nm and two weak Q bands at 570 and 610 nm, respectively [34]. The spectrum of the MnTPP/CuFe 2 O 4 composite exhibits broad absorption ability in visible light region, with the characteristic absorption of MnTPP bands centered at 464 and 614 nm.…”

Dioxomolybdenum(VI) complexes of hydrazones of two substituted salicylaldehydes: synthesis, structures, and catalytic properties

“…The complexes in the present work have similar catalytic properties to those of a similar molybdenum(VI) catalyst without any substituent in the hydrazone ligand [20] and of a multi-wall carbon nanotube supported tungsten hexacarbonyl [25]. The complexes have higher conversion values than those of vanadium (IV) complexes with Schiff bases [26] and multi-wall carbon nanotube supported manganese(III) tetraphenylporphyrin [27]. The mechanism (scheme 2) for epoxidation of various olefins to epoxides using the complexes as catalysts has been proposed by comparison with the literature [28].…”