Fast methylene blue removal by MoO3 nanoparticles

Experimental and computational modeling studies on silica-embedded NiO/MgO nanoparticles for adsorptive removal of organic pollutants from wastewater

“…23,26 However, the concept of "nanosorbcats" was introduced for the rst time by our research group, 24 and has since been tested by other investigators. 25,27,28 It refers to the use of nanoparticles as adsorbent for sequestering the waste organic compounds from wastewater bodies and subsequently as a catalyst for decomposing the adsorbed species into new commodity product. Hence, this allows not only water recyclability and waste hydrocarbons conversion, but also nanosorbcats regeneration.…”

Morphology Change Study of Molybdenum Oxide from 3D to 2D Particles

“…59103, Sahuayo, Michoacán. 3. Centro de Investigación en Materiales Avanzados SC (CIMAV), Laboratorio Nacional de Nanotecnología, Miguel de Cervantes No.120, C.P.…”

“…Molybdenum oxide hexagonal rods (MoO3) were synthesized following microwave assisted hydrothermal method (MAHM) previously reported [3]. First, ammonium heptamolybdate ((NH4)6Mo7O24 • 4H2O) aqueous solution 0.3 M was adjusted to PH 2 by means nitric acid 2.2N, after, the solution was heated at 200°C for 20 minutes in the Multiwave PRO microwave reaction system (Anton Parr) reaching 41 bar.…”

Molybdenum Oxide Structures Synthetized by Microwave Technique and Its Phase Transformation by Thermal Treatment

“…In a microwave-assisted synthesis, process there is an inverse temperature profile compared to conventional methods: heating occurs by conversion rather than by energy transfer, so the temperature distribution in the synthesis is uniform and highly controlled, which allows rapid synthesis, efficient and with better results than traditional heating [1]. This discovery has allowed the synthesis of new materials in more controlled morphologies [1][2][3], additionally a phase transformation can be achieve by thermal treatment [3], and the morphological changes are due to the crystalline structures obtained.Molybdenum oxide (MoO3) materials were synthesized according to previously method reported by Paraguay-Delgado et al [3], for which an aqueous solution of ammonium heptamolybdate ((NH46Mo7O24 · 4H2O) at concentration of 0.3 M and controlling the pH was treated in microwave assisted hydrothermal method at 200°C for 20 minutes, achieving pressures around 41 bar. The microwave-assisted hydrothermal method allows the synthesis two samples of MoO3 with hexagonal bar morphology structures as showed by scanning electron microscopy (SEM) in image 1 and hexagonal MoO3 phase according to X ray diffraction technique (XRD) in figure 2 whit a clear difference in (100) and (210) patterns intensity directions.…”

“…Molybdenum oxide (MoO3) materials were synthesized according to previously method reported by Paraguay-Delgado et al [3], for which an aqueous solution of ammonium heptamolybdate ((NH46Mo7O24 · 4H2O) at concentration of 0.3 M and controlling the pH was treated in microwave assisted hydrothermal method at 200°C for 20 minutes, achieving pressures around 41 bar. The microwave-assisted hydrothermal method allows the synthesis two samples of MoO3 with hexagonal bar morphology structures as showed by scanning electron microscopy (SEM) in image 1 and hexagonal MoO3 phase according to X ray diffraction technique (XRD) in figure 2 whit a clear difference in (100) and (210) patterns intensity directions.…”