Design and Synthesis of Metal Complexes of (2E)‐2‐[(2E)‐3‐Phenylprop‐2‐en‐1‐ylidene]hydrazinecarbothioamide and Their Photocatalytic Degradation of Methylene Blue

Abstract

The photocatalytic degradation has been considered to be an efficient process for the degradation of organic pollutants, which are present in the effluents released by industries. The photocatalytic bleaching of cationic dye methylene blue was carried out spectrometrically on irradiation of UV light using Cu(II), Ni(II), and Co(II) complexes of (2E)-2-[(2E)-3-phenylprop-2-en-1-ylidene]hydrazinecarbothioamide (HL). The effects of pH and metal ion were studied on the efficiency of the reaction. Cu(II) complex shows better catalytic activity and the highest percentage degradation (~88.8%) of methylene blue was observed at pH 12. A tentative mechanism has also been proposed for the photocatalytic degradation of methylene blue.

Copper (II) Heterocyclic Thiosemicarbazone Complexes as Single-Source Precursors for the Preparation of Cu9S5 Nanoparticles: Application in Photocatalytic Degradation of Methylene Blue

“…Recently, our group reported the use of thiourea Cu(II) complexes, N-morpholine-N-benzoylthioureatocopper(II), and N-pyrrolidine-N-benzoylthioureatocopper(II) complexes as single-source precursors for the preparation of copper sulphide NPs with various morphologies [8,9], and our results indicate that the formation of the roxbyite phase (Cu 1.75 S) was solvent and temperature dependent [9]. Studies have also reported the use of Cu(II) complexes for the photodegradation of organic dyes in aqueous solution [28,29].…”

Cu(ii)/Ni(ii)–organic frameworks constructed from the homometallic clusters by 5-(2-carboxyphenoxy)isophthalic acid and N-ligand: synthesis, structures and visible light-driven photocatalytic properties

“…48 These results indicate that the Cu(II) complexes have a faster degradation rate for the RhB than the Ni(II) complex, which can be attributed to the nature of the metal cation used, that Cu(II) is a more active metal cation than Ni(II). 49 Meanwhile, Cu(II) and Ni(II) have different electronic congurations and geometries, which may also inuence the photocatalytic activity. 50,51 In addition, based on the good catalytic performance of complexes 1-2, the catalytic performance of 1-2 for methylene blue (MB) and methyl orange (MO) was measured.…”

“…The reaction mechanism for dyes photodegradation has been discussed based on semiconductor theory. 26,48,49,52 When the complex is irradiated by a xenon lamp, the electrons in the valence band are easily excited into the conduction band, which increases the amount of holes (h + ) in the valence band. Then electrons may combine with O 2 on the surface of the complex to form oxygen radical, which will further produce hydroxyl free ($OH).…”

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

“…In particular, nickel is a vital element to contribute to the removal of dyes [19,20]. Additionally, thiosemicarbazones are also beneficial for the dyes removal by forming hydrogen bonds and π–π stacking interactions [21]. Thus, the combination of [P 2 Mo 5 O 23 ] 6− , nickel ion and 2-acetylpyrazine-thiosemicarbazone at a molecular will contribute to the dye removal by synergic effect.…”