Effect of the metal type in perovskites prepared by modified proteic method in dye adsorption from aqueous medium

Induced dielectric behavior in high dense AlxLa1-xTiO3 (x = 0.2–0.8) nanospheres

“…In addition, previous scientists put efforts on various properties of LT material [12][13][14][15]. Furthermore, Ag, Cu, Au, N, Sr, Ba, and Ca doped LT materials in the form of bulk, nanoparticles, nanocomposites, thin films, and polymers were studied at length to discuss structure, optical, physical, magnetic, electrical, ferroelectric, piezoelectric, and other chemical properties [16][17][18][19][20][21][22][23][24][25][26][27]. In the same fashion, the aluminium titanate was prepared for evaluating the photocatalysis, biomedical, electrical and physical properties [28][29][30][31][32].…”

Effect of synthesis method of LaNiO3 type materials with perovskite structure on their features and in the methylene blue dye removal from aqueous media

“…According to JCPDS No.83-1355, the peak whose angle 2θ is 29.80° refers to La2O3. This product can be formed since lanthanum nitrate is one of the reagents used in the synthesis process [4,6,[22][23][24]. The diffraction pattern of the calcined material obtained by the plate combustion method (LN-CCH9) indicated the presence of high intensity peaks referring to the perovskite phase, whose 2θ angles are 23.20°, 32.85° and 47.34° and 58.67°, and low intensity peaks, but also referring to perovskite, whose 2θ angles are 40.64° and 53.59° based on JCPDS No.…”

“…LaNiO3 materials were synthesized by the synthesis methods described below with methodologies adapted from works proposed in the literature: modified protein method [22,23], mechanosynthesis [24], plate combustion [25] and microwave [25]. All the synthesis procedures used in this work are described in more detail in Ribeiro's work [26].…”

“…Peak identification was performed using JCPDS standard crystallographic forms. The data obtained from XRD analysis, besides allowing the identification of the phases present in the samples, allowed to calculate the average size of the crystallite through the Scherrer equation [24]. The crystallinity of the samples was determined from the methodology proposed in [26].…”

“…To study the effect of adsorbent mass, 50 mg, 75 mg and 100 mg of LaNiO3 (LN-CCH9) adsorbent previously dried at 60 ºC for 30 minutes were used, following the methodology previously described for the study of contact time, but the UV-Vis spectrum was obtained only within 360 minutes. The efficiency (E%) and amount of adsorbed dye (q) in milligrams of dye per gram of adsorbent were estimated based on equations 01 and 02 [24].…”