Synthesis and characterization of semiconductor CoAl2O4 for optical and dielectric studies: Application to photodegradation of organic pollutants under visible light

Green synthesis of P − ZrO2CeO2ZnO nanoparticles using leaf extracts of Flacourtia indica and their application for the photocatalytic degradation of a model toxic dye, Congo red

“…13 a, b and c respectively and the apparent rate constant and reaction rates are shown in Table 5 . At low concentration (10 mg/L) the reaction best fitted pseudo first order kinetics with rate constant 0.0069 min −1 and a similar trend was observed by Boudiaf et al [95] , Zhang and Yan [28] and Vattikuti et al [96] . Pseudo first order reactions are heterogeneous photocatalysis and adsorption-desorption process on the photocatalyst is not disturbed by decomposing reactions [97] .…”

“…The diffraction peaks at 2 θ =30.19, 50.25, 60.10 were indexed to the Bragg reflections (101), (112), (211) respectively and can be attributed to the monoclinic phase of (JCPDS No. 01-0731523) [93] [75] [95] . was also present in the nanoparticle composite and its presence was shown by diffraction peaks at 2 θ = 28.5, 33.08, 54.54, 59.08, indexed to the (111), (200), (220), (222) face centred cubic structure of (JCPDS No.…”

Charge recombination suppression in dye-sensitized solar cells by tuning the dielectric constant of triphenylamine dyes with altering π-bridges from naphthalene to anthracene units

“…For both dyes in HOMO-LUMO states, the ICT + (p,p*) + (n,p*) transitions were observed that reflected appropriate ICT through the 'push-pull' effect. For these dyes, the experimental Paper PCCP E g values were calculated using the absorption profile and (ahn) 2 = A(hn À E g ) equation 60,61 (see Fig. 5(D) and (E)).…”

Synthesis of cobalt aluminate spinel by sol-gel process: Investigation of starting reagents and precursors obtained after pyrolysis

“…The blue spinel of cobalt has attracted significant attention as a colouring agent in glaze and bulk tile compositions due to its superior properties, such as chemical and thermal stability as well as colour stability [4][5][6][7][8]. Furthermore, CoAl2O4 nanoparticles exhibit good photocatalytic activity for the degradation of textile dyes [9,10].…”