Synthesis and characterisation of novel Cu(ii)-anchored biopolymer complexes as reusable materials for the photocatalytic degradation of methylene blue

Abstract

Biopolymer-incorporated Cu(ii) complexes are proven to be excellent photocatalysts for the degradation of organic dyes (methylene blue) under UV-visible light.

Synthesis of novel chitosan Schiff base and its ZnO nanocomposite for removal of synthetic dye, antimicrobial, and cytotoxicity activity

“…40 FTIR of chitosan Figure 1(a) shows absorbance peaks at 1644 and 1594 cm −1 are due to the presence of carbonyl (C=O stretching) group and amine (–NH 2 bending), respectively. 41 For 2-HyA-CS the FTIR (Figure 1(b)) shows a new absorbance peak at 1607 cm −1 due to the formation of imine group –CH=N – , 1566 cm −1 and 756 cm −1 demonstrated the absorbance peaks of the benzene ring, which indicate the successful formation of chitosan Schiff base 2-HyA-CS. 42,43 The FTIR spectrum Figure 1(c) of 2-HyA-CS/ZnO shows a new absorbance peak at 507 and 428 cm −1 attributed to the stretching vibration of nano ZnO.…”

“…According to the observations, the nanocomposite may exhibit anti-inflammatory, antibacterial, and overall antioxidant properties. 41 The nanocomposite(2-HyA-CS/ZnO) were also examined via the transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDAX). The EDX profile was recorded on a single location of the nanocomposite, the results are shown in Figure 5(a).…”

Co(II), Ni(II), Cu(II), and Zn(II) metal complexes of chalcone: Synthesis, characterization, thermal, antimicrobial, photocatalytic degradation of dye and molecular modeling studies

“…At predefined intervals, aliquots were taken, separate the photo catalyst by centrifugation, and the absorption of the remaining solution is measured at 664 nm (λ max for MB dye). [29] The effects of (i) catalyst dosage (10,15,20, and 30 mg) and (ii) contact time (at 30, 60, 90, 120, and 180 min) and (iii) pH (pH = 4, 8 and 12) dependence were evaluated.…”

Yttrium(iii) coordination polymer micro/nanospheres with single ligand and dual ligands

“…In the last few decades, there has been considerable interest in rare-earth-based coordination polymers (RE-CP). Inorganicorganic hybrid materials are very important because they have many potential applications in a broad range of elds such as chemical sensing, lighting and display [1][2][3][4][5][6][7] bioapplications, 8,9 and thermometric probes. 1,10 Lanthanide materials are very useful in many applications.…”

“…[21][22][23]37 However, as a biomaterial, controlling the morphology, structure and size of the micro/nanoparticles is important. 5,21,24 Ortho-vanillin is a popular ligand in coordination chemistry because it is a Schiff base that generates rich multifarious coordination polymers. 1 Especially, complexes were synthesized from dual ligands, i.e., vanillin and asparagine.…”