Synthesis, crystal structure and photocatalytic properties of two bismuth(III) complexes with different N-containing heterocycles

Synthesis, Characterization, and Photocatalytic Activity of Mixed-Ligand Cerium(III) and Bismuth(III) Complexes

“…Such type of weight loss with two distinct degradation steps is in well agreement with the recent study of Huang et al, where two step weight loss was reported for the removal of organic ligands from the bismuth(III) complex ((1,10-phen)Bi(C 2 O 4 ) 1.5 ) [37]. e TGA curve became stable after 570 °C for complex 1 and 650 °C for complex 2; no further weight losses indicated the stability of the residues due to the formation of corresponding metal oxides [38]. e high thermal decomposition temperature indicated good thermal stability of the complexes due to the highly polarized M-O bonds [39].…”

“…ese results were supported by the relevant literature, for instance, Sangsefidi et al reported the degradation efficiency ≈90% for cerium complexes against azo dyes [16]. Likewise, Tan et al reported the degradation efficiency ≈99% against Rhodamine B dye using {(Hphen)(BiCl 4 ) n } complex [38]. Table 1 compares the photocatalytic efficiencies of different reported complexes against the degradation of Congo red.…”

“…is behavior is explained by the fact that initially when dye concentration was increased, there were sufficient catalytic sites present for the dye molecules to get adsorb and degraded by the catalyst. However, when it is further increased, the presence of large amount of dye particles compete for the surface of the catalyst which in turn reduces the availability of free radicals to the dye molecule; therefore, degradation of the dye is prevented [38]. Another contributing factor toward the reduced degradation efficiency is that photons may be interrupted to reach the surface of the photocatalyst when higher concentrations of dye are used [43].…”

Two Cu(i) coordination polymers based on a new benzimidazolyl-tetrazolyl heterotopic ligand for visible-light-driven photocatalytic dye degradation

“…The rate constants are comparable to many reported systems that based on MOFs photocatalyst. 47–50 Such rate constants are approximately 10 times higher than those for CP/irradiation and H 2 O 2 /irradiation (Fig. 4c), which further illustrates the synergistic effect of CPs and H 2 O 2 on the degradation of MLB.…”

Sensing and photocatalytic properties of a new 3D Co(ii) coordination polymer based on 1,1′-di(p-carboxybenzyl)-2,2′-biimidazole

“…Photochemical stability is another critical factor for the wide practical application of photocatalysts. 41,42 Therefore, the recycling performances of 1 for photodegradation of the MB and RhB dyes under the same conditions were evaluated. From Fig.…”