“…It is obvious that ZnSe-XrGO has comparatively high photocatalytic activities than ZnSe. The reason is that the reduced graphene oxide (rGO) in the nanocomposite has increased the mobility of photo-generated charges [ 35 ], retarded electron-hole pair recombination resulting in high electron density and provide high surface area for interaction with dye [ 27 , 54 , 55 ], Fig. 6 UV-VIS adsorption spectral changes of 10 ppm MV solution as a function of time over (a) ZG1 (b) ZG2 (c) ZG3 under Visible light irradiation.…”
Section: Resultsmentioning
confidence: 99%
“…Graphene oxide(GO ) was synthesized by the modified hummer's method by the oxidation of graphene [ 27 , 33 ]. ZnSe-rGO nanocomposite was synthesized by hydrothermal method ( Fig.…”
Section: Methodsmentioning
confidence: 99%
“…Different ways (e.g. developing heterojunctions [ 25 ], doping of non-metals N, P [ 26 ]and loading over carbonaceous support [ 27 ] have been used to separate the photogenerated electron-hole pairs and supporting the nanoparticles over some carbon based material of high conductivity is a promising strategy [ 28 ].…”
“…It is obvious that ZnSe-XrGO has comparatively high photocatalytic activities than ZnSe. The reason is that the reduced graphene oxide (rGO) in the nanocomposite has increased the mobility of photo-generated charges [ 35 ], retarded electron-hole pair recombination resulting in high electron density and provide high surface area for interaction with dye [ 27 , 54 , 55 ], Fig. 6 UV-VIS adsorption spectral changes of 10 ppm MV solution as a function of time over (a) ZG1 (b) ZG2 (c) ZG3 under Visible light irradiation.…”
Section: Resultsmentioning
confidence: 99%
“…Graphene oxide(GO ) was synthesized by the modified hummer's method by the oxidation of graphene [ 27 , 33 ]. ZnSe-rGO nanocomposite was synthesized by hydrothermal method ( Fig.…”
Section: Methodsmentioning
confidence: 99%
“…Different ways (e.g. developing heterojunctions [ 25 ], doping of non-metals N, P [ 26 ]and loading over carbonaceous support [ 27 ] have been used to separate the photogenerated electron-hole pairs and supporting the nanoparticles over some carbon based material of high conductivity is a promising strategy [ 28 ].…”
“…Due to the outstanding potential of hybrid nanostructures for medicinal, optoelectronic, and environmental applications, numerous academic and scientific studies have been conducted to create effective and affordable nanocatalysts [35][36][37][38]. Using effective metal and metal-based nanocatalysts, environmental difficulties, such as wastewater cleaning, dye remediation, and heavy metal elimination, have been resolved [32][33][34]. Due to the outstanding potential of hybrid nanostructures for medicinal, optoelectronic, and environmental applications, numerous academic and scientific studies have been conducted to create effective and affordable nanocatalysts [35][36][37][38].…”
Considering that freshwater is a necessity for human life, sewage treatment has been a serious concern for an increasing number of scientists and academics in recent years. To clean industrial effluents, innovative catalysts with good adsorption, chemical stability, and physicochemical properties have been constructed. Here, a prospective microbial consortium was extracted from the wastewater and used as a low-cost catalyst that was functionalized with silver and silver-doped hydroxyapatite (Ag@HAp) nanostructures made using a sonochemical approach. The structural, optical, and crystal phases of Ag and Ag-doped hydroxyapatite (Ag@HAp) nanostructures were studied using ultraviolet-visible (UV-Vis), Fourier transfer infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HRTEM) techniques. The degradation action of functionalized microbial consortia was examined against reactive orange 84 (RO84) organic discharge. Excellent efficiency for the removal of industrial effluents was found for the Ag NPs and Ag-doped hydroxyapatite (Ag@HAp) loaded with microbial consortia. A maximum of 95% of the decolorization properties of the RO84 dye were obtained in the case of microbial consortia with Ag and Ag@HAp, which was better than the consortia alone (80.32% for 5 ppm and 69.54% for 20 ppm). The consortia/Ag showed 93.34% for 5 ppm and 85.43% for 20 ppm, while was higher for consortia/Ag@HAp (95.34 and 88.43%). The use of these surface-modified nanocatalysts for wastewater treatment and waste effluents discharged from laboratories, the chemical industry, and other sources could be expanded.
“…Physicists, chemists, materials scientists, engineers, and many others commonly utilize this technique. The hydrothermal method is highly valued for its ability to control morphological characteristics and ensure product purity, which sets it apart from conventional methods [11] [12].…”
Hydroxyapatite (HA) was successfully synthesized using the hydrothermal method. This study aimed to analyze the effect of a low solid/liquid ratio on the properties of HA crystals. HA synthesis was performed using chicken eggshells and the hydrothermal method at a temperature of 150°C. The solvent amount was kept constant, while the solid amount varied (half-reaction). The characteristics of HA were determined using XRD, FTIR, PSA, and SEM. The results showed that the purity and size of HA were influenced by a low solid/liquid ratio, while the crystallinity remained relatively unchanged, directly impacting the lattice parameter value. FTIR analysis revealed the absence of the O-H group in the sample with the low solid/liquid ratio. PSA results showed a smaller particle size of 0.995 µm for the sample with the low solid/liquid ratio. SEM results demonstrated a smaller particle size in the sample with a low solid/liquid ratio when observed at the same magnification
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