This research reports obtaining the bismuth molybdate phase α-Bi₂Mo₃O₁₂ by a microwave-assisted hydrothermal method using sustainable environmental conditions compared to the typical material synthesis by solid-state reaction. The α-Bi₂Mo₃O₁₂ sample obtained by microwave assistance (BMO) was evaluated for the photocatalytic degradation of tetracycline (TC) using simulated sunlight and compared against the same phase obtained by the typical solid-state reaction (BSS). BMO presented a higher TC degradation efficiency (56%) than BSS (35%)...

g-C₃N₄ powders were double exfoliated by means of the microwave technique and heat treatment. X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), N₂ physisorption, and UV–visible (UV–vis) were carried out for the evaluation of composition, structure, morphology, surface area, and optical properties. XRD and FTIR analysis confirmed that the crystal structure and functional groups of g-C₃N₄ is maintained after the double exfoliation...

This chapter discusses topics related to tungsten trioxide (WO₃) and its application in water treatment. It examines the influence of morphology, the effect of the starting precursor on the synthesis and crystalline structure, on the photocatalytic properties of WO₃. It also addresses the synthesis of nanostructures, composites, and/or heterostructures of WO₃ to increase their photocatalytic performance...

In this work, the Bi₂W₂O₉/g-C₃N₄ type-II heterojunction system has been prepared for the first time by anincipient impregnation method. From the results, we have stated that the addition of low amounts of Bi₂W₂O₉(<5 wt%) does not provide changes in the structural and textural properties of g-C₃N₄, but it improves substantially the photocatalytic performance under simulated solar irradiation.....

In this work, it is reported for the first time the preparation of CaBiVMoO8₈ coatings by the electrophoretic deposition route. The material exhibits absorption in the visible light region with a bandgap energy of 2.49 eV. In addition, the conduction and valence potentials were estimated at 0.07 and 2.56 eV, respectively. Isopropanol-based suspensions of CaBiVMoO₈ were used for the formation of the EPD coatings at 10, 12 and 14 V. The photocatalytic performance of the as-prepared coatings was examined by the degradation of the tetracycline antibiotic under UV–vis irradiation....

In this work, the WO₃/g-C₃N₄ heterojunction system has been prepared through a sonochemical process at 37kHz. The composites were characterized by powder X-ray diffraction, diffuse reflectance and Fourier transform infrared spectroscopies, scanning electron microscopy and nitrogen adsorption-desorption measurements. The photocatalytic activity of the coupled system was evaluated by the photodegradation of the Orange G dye and the ciprofloxacin antibiotic under solar-like irradiation conditions. In this regard, the sample with 5 wt.% WO₃ exhibited the higher photoactive behavior than the single WO₃ and g-C₃N₄ materials...

Novel Fe-impregnated BiVO₄ was synthetized by a sonochemistry method, then the Fe-impregnation was prepared through an easy and low-cost method by the directly hydrolyzes iron salt onto BiVO₄ nanoparticles. Scanning electron microscope equipped with an energy dispersive spectrometer analysis indicated the presence of Fe on the impregnated BiVO₄. Half-time of Fe-BiVO₄ (1%) sample was 10 times greater than BiVO₄ pure in the ciprofloxacin degradation by a dual effect process under UV-Vis light irradiation...

KBiO₃/g‐C₃N₄ composites were prepared under microwave irradiation to different weight ratios of KBiO₃ (5, 10, 20, 30, 40, 50, 60, 70 80, 90%wt) using a Mars‐6 microwave for 30 min at 100 W. The samples were characterized by X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR) spectroscopy, scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS)‐ mapping, N2 physisorption and diffuse reflection spectroscopy (DRS). The photocatalytic activity of the samples was evaluated in the hydrogen evolution reaction...

A BiPO₄/g-C₃N₄ photoactive system has been prepared by means of a practical ultrasound-assisted procedure in aqueous medium. The obtained hybrid composites were widely characterized by X-ray powder diffraction, Fourier-transform infrared spectroscopy, UV–vis diffuse reflectance spectroscopy, scanning electron microscopy and N2 adsorption–desorption measurements...

BiVO₄ films were prepared by a screen-printing technique on Corning glass substrate. The material employed to prepare the films was synthetized by the hydrothermal method. For comparative purposes, the BiVO₄ was synthesized via solid state reaction and deposited in film form by the same technique...

KBiO₃ was synthesized by three methods: chemical substitution, hydrothermal and sonochemical. All reaction products were analyzed by X-ray powder diffraction and reveal that KBiO₃ presents a cubic structure...

In the present work, we report the electrophoretic deposition of lead molybdate nanoparticles which were synthesized by an ultrasonic-assisted method using Pb(NO₃)₂ and H₂MoO₄ as precursors. The PbMoO₄ nanoparticles were characterized by X-ray diffraction, UV–vis diffuse reflectance spectroscopy, N₂ adsorption-desorption as well as SEM and TEM microscopies...

In this work, a novel ErVO₄ photocatalyst was synthesized by means of a facile hydrothermal process at 180 °C. The successful formation of the semiconductor was confirmed by several techniques such as X-ray diffraction, UV–Vis diffuse reflectance, scanning electron microscopy and N₂ physisorption measurements...

In the present work, the Bi₂W₂O₉ photocatalyst has been prepared by an easy and prompt co-precipitation route. From the structural characterization, we have stated that the formation of the Bi₂W₂O₉ is accompanied by a small amount of the Bi₂W₂O₉ oxide, which gradually decreases by....

A novel CaBiVMoO₈ photocatalyst has been prepared by a simple coprecipitation technique at several pH values. The obtained samples were thoroughly characterized by X-ray powder diffraction analysis, ultraviolet–visible (UV–Vis) diffuse reflectance spectroscopy....

Novel visible light-driven PbMoO₄/g-C₃N₄ hybrid composites were synthesized with loadings 0, 20, 50, 80 and 100 wt.% of PbMoO₄ by sonochemical method. The PbMoO₄/g-C₃N₄ hybrid composites were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS)...

In this work, it is reported for the first time the preparation of photocatalytic coatings of graphitic carbon nitride (g-C₃N₄) throught a green chemical procedure based on the electrophoretic deposition route (EPD) using only water as liquid medium. Several coatings with spearhead-like morphology...

In this research, we have synthesized a novel CaBiVMoO₈ photocatalyst by means of an easy and prompt route based on the co-precipitation method. The formation of the material was analyzed by several techniques, including X-ray diffraction, UV-vis diffuse reflectance, BET surface area...

The photocatalytic activities of CdS coatings formed by electrophoretic deposition (EPD) were evaluated through the photodegradation of an antibiotic, tetracycline. First, CdS nanoparticles were synthesized under microwave irradiation of aqueous solutions containing the cadmium and sulfur precursors...

The incorporation of Er³⁺ ions in the CaTiO₃ structure provides an enhanced H₂ photoproduction due to the for-mation of long-lived charge-carriers in the semiconductor. Nitroblue tetrazolium reaction, photoluminescence and time resolved microwave conductivity techniques...

The graphite-like C₃N₄ was prepared by means the polycondensation of melamine at 500 C for 4 h. The polymeric photocatalyst was characterized by several techniques such as X-ray powder diffraction (XRD), UV–vis diffuse reflectance spectroscopy (DRS) and scanning electron microscopy (SEM)...

This document reports the preparation of a coupled system CdS/g-C₃N₄ with an enhanced photocatalytic behavior compared with the pristine CdS and g-C3N4 semiconductors. The preparation of the carbon nitride (g-C₃N₄) was carried out through a thermal treatment to an organic precursor...

The microwave-assisted solvothermal (PbMH) and conventional solvothermal (PbH) synthesis were successfully used to prepare PbMoO₄ particles with different morphologies, crystallinity degree and particle size. The material was structurally characterized by X-ray diffraction (XRD)...

BiVO₄ with monoclinic-type structure were successfully synthesized by microwave-assisted hydrothermal method (BiMH) and hydrothermal reaction (BiH500) in aqueous medium. The materials were characterized by X-ray diffraction, scanning electron microscopy, Barrett–Emmett–Teller technique...

WO₃ nanoparticles with hexagonal and monoclinic structures were synthesized via a microwave-assisted hydrothermal process without the use of any additives in which the microwave hydrothermal reaction time was 30 or 60 min and was followed by different thermal treatments...

In this work the PbMoO₄ molybdate is proposed as photocatalyst for the degradation of organic pollutants in water. In general, the core part of the work can be divided in three sections that include the design of the synthesis of material, its characterization, and finally, the evaluation of...

Lead molybdate powders (PbMoO₄) with scheelite-type structure were successfully synthesized at low temperatures by using microwave irradiation (MW) in ethylene glycol medium. The resulting powders were characterized by X-ray powder diffraction (XRD), diffuse reflectance spectroscopy (DRS)...

PbMoO₄ oxide with scheelite structure was obtained by hydrothermal synthesis in the absence of additives. The material was characterized by X-ray powder diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and adsorption–desorption N₂ isotherms. The organic dyes...

Synthesized PbMoO₄ from H₂MoO₄ and Pb(NO₃)₂ with microwaves was compared, in terms of its photocatalytic activity as catalyzer for decomposing rhodamine B (RhB), against samples prepared by hydrothermal and sonochemical methods from the same precursors...

PbMoO₄ molybdate with scheelite structure was synthesized by a simple co-precipitation method. The material was characterized by X-ray powder diffrac-tion (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), and adsorption–desorption N₂ isotherms (BET)...

In this work, the synthesis and characterization of ZnS–sodium carboxymethyl cellulose nanocompos-ite films were studied. The film was prepared by casting after the in situ precipitation of ZnS in sodium carboxymethyl cellulose (NaCMC) aqueous solution. The in situ method avoids nanoparticles...