Synthesis and Characterization of MoO3 for Photocatalytic Applications

Al‐Alotaibi, Amal L.; Altamimi, N.; Howsawi, Enas; Elsayed, Khaled A.; Massoudi, I.; Ramadan, Abdallah

doi:10.1007/s10904-021-01939-w

Cited by 30 publications

(11 citation statements)

References 41 publications

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“…Additionally, the prepared Ag 2 MoO 4 exhibits a larger specific surface area and pore diameter, providing more active sites for binding and decomposing MB dye molecules under visible light. 60 The high surface-to-volume ratios also promote electron transport and speed up the decomposition of MB. 61 Furthermore, surface defects can enhance the photocatalytic activity of nanoparticles by generation of reactive oxygen species (ROS: ˙OH and ˙O 2 − ).…”

Section: Resultsmentioning

confidence: 99%

“…The interaction between dye molecules and OH radicals or the formation of intermediate photoproducts is the primary cause of the deterioration of MB aqueous solution when illuminated with visible light. 60,61 In order to investigate how well bead-like Ag 2 MoO 4 NFs can keep their ability for photocatalytic activity, we performed a recyclability test. Fig.…”

Section: Photocatalytic Applicationmentioning

confidence: 99%

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Novel electrospun bead-like Ag₂MoO₄ nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

Safartoobi,

Mazloom,

Ghodsi

2024

Phys. Chem. Chem. Phys.

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Section: Resultsmentioning

confidence: 99%

Section: Photocatalytic Applicationmentioning

confidence: 99%

Novel electrospun bead-like Ag₂MoO₄ nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

Safartoobi,

Mazloom,

Ghodsi

2024

Phys. Chem. Chem. Phys.

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“…Among these phases, the most thermodynamically stable phase is α-MoO 3 . This widely studied, highly anisotropic α-MoO 3 phase exhibits a natural 2D layered structure, which has attracted much attention of the research community due to their wide range of applications in supercapacitors, batteries, sensors, LEDs, solar cells, and electrocatalysis. − Additionally, the synthesis of MoO 3 is possible at comparatively low temperatures via energy-efficient routes . The use of negatively surface-charged MoO 3 nanoparticles as fillers to enhance the beta phase of the PVDF–HFP matrix can make the applications cost-efficient and sustainable.…”

Section: Introductionmentioning

confidence: 99%

2D MoO₃/PVDF–HFP Nanocomposites for Flexible Piezoelectric Nanogenerator and Wireless Mechanosensor Applications

Kundu,

Mondal,

Bose

et al. 2024

ACS Appl. Nano Mater.

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Recent advancements in wireless, flexible, and selfpowered sensors have opened avenues for real-time monitoring of mechanical pressure stimuli at remote locations with utmost resolution and precision. This work reports on the development of a 2-D MoO 3 /PVDF−HFP composite-based flexible and highly efficient piezoelectric nanogenerator (PNG). The influence of 2-D α-phase MoO 3 (α-MoO 3 ) nanoflakes on the polymorphism of poly(vinylidene fluoride-co-hexa-fluoropropylene) (PVDF−HFP) was systematically investigated with the aim of maximizing the electroactive β phase. A series of α-MoO 3 nanoflakes-incorporated flexible, transparent, and self-standing PVDF−HFP composite films with varying loading weight percentages of 1, 1.5, and 2% (PMO1, PMO1.5, and PMO2, respectively) were prepared by the solution casting technique. PMO2 exhibited a high β-phase fraction of 76% and was used to fabricate a facile and flexible PNG device. Gentle finger tapping onto the PNG showed an excellent open-circuit output voltage (50 V across 30 MΩ resistance) with a maximum power density of 1512 W m −3 and a conversion efficiency of 30.4%. The PNG demonstrated a promising performance for qualitatively detecting dynamic pressure stimuli. It was able to precisely monitor and discriminate the bending motion of different fingers and fine motions of proximal interphalangeal and metacarpophalangeal joints of the index finger. A (4 × 4) sensing matrix comprising the PNG was successfully employed to detect the spatial distribution of static pressure stimuli (with a sensitivity of ∼15.5 MPa −1 ), and the developed matrix was able to precisely record the shape and size of the objects placed onto it. The PNG-based sensor was also integrated with an android mobile interface through wireless technology for remote sensing applications. Hence, the fabricated PNG can be a promising device for wireless monitoring of mechanical pressure stimuli in different cutting-edge technologies such as healthcare monitoring, robotics, and wearable electronics.

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“…Among them, the stable and environmentally safe α-MoO 3 has been widely applied in various fields such as catalysis, sensors, lithium-ion batteries, organic solar cells, and display materials [17][18][19]. α-MoO 3 has been prepared by several physicochemical methods such as hydrothermal, electrochemical, sonochemical, thermal evaporation, chemical vapour deposition, and laser ablation methods [20][21][22][23][24]. However, these methods have many limitations such as high cost, harsh conditions, additional use of capping agents and stabilisers, and generation of toxic byproducts.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of α-MoO₃ nanoparticles and its adsorption performance of cadmium from aqueous solutions

Hasan

Tawfik

Assaf

2021

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Molybdenum (VI) oxide nanoparticles (α-MoO3 NPs) were green synthesised using buckthorn leaf extract as the reducing and capping agents. The α-MoO3 NPs were characterised by thermogravimetric analysis, fourier transforms infrared spectroscopy, X-ray diffraction, field emission scanning, and transmission electron microscopy, energy-dispersive x-ray spectroscopy, and Brunauer–Emmett–Teller surface area analysis. The analyses showed the formation of spherical-shaped α-MoO3 NPs with ∼50 nm mean crystallite size, 3.825 m2 g-1 surface area, and 0.005 cm3 g-1 total pore volume. The synthesised α-MoO3 was then applied for adsorption of Cd (II) from aqueous solutions. Optimisation of various adsorption parameters resulted in complete Cd (II) removal under the conditions: 0.1 g α-MoO3 dose, 60 min contact time, 50 mg l-1 initial Cd (II) concentration, pH 7 and 298 K. The experimental results were further assessed using different kinetic, isotherm and thermodynamic models. The data were best described by pseudo-second-order (R2 = 0.992) and Langmuir (R2 = 0.98) models with a maximum adsorption capacity of 57.5 mg g-1 at optimum conditions. Thermodynamic results indicated that the adsorption process is feasible, spontaneous, and endothermic in nature. Moreover, upon regeneration and interference results, α-MoO3 is stable and selective for Cd (II) adsorption in presence of other cations. Upon these results, the biosynthesised α-MoO3 NPs can be used as a selective adsorbent for the efficient removal of Cd (II) from aqueous media.

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Synthesis and Characterization of MoO3 for Photocatalytic Applications

Cited by 30 publications

References 41 publications

Novel electrospun bead-like Ag₂MoO₄ nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

Novel electrospun bead-like Ag₂MoO₄ nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

2D MoO₃/PVDF–HFP Nanocomposites for Flexible Piezoelectric Nanogenerator and Wireless Mechanosensor Applications

Biosynthesis of α-MoO₃ nanoparticles and its adsorption performance of cadmium from aqueous solutions

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Synthesis and Characterization of MoO3 for Photocatalytic Applications

Cited by 30 publications

References 41 publications

Novel electrospun bead-like Ag2MoO4 nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

Novel electrospun bead-like Ag2MoO4 nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

2D MoO3/PVDF–HFP Nanocomposites for Flexible Piezoelectric Nanogenerator and Wireless Mechanosensor Applications

Biosynthesis of α-MoO3 nanoparticles and its adsorption performance of cadmium from aqueous solutions

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Product

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Novel electrospun bead-like Ag₂MoO₄ nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

Novel electrospun bead-like Ag₂MoO₄ nanofibers coated on Ni foam for visible light-driven heterogeneous photocatalysis and high-performance supercapacitor electrodes

2D MoO₃/PVDF–HFP Nanocomposites for Flexible Piezoelectric Nanogenerator and Wireless Mechanosensor Applications

Biosynthesis of α-MoO₃ nanoparticles and its adsorption performance of cadmium from aqueous solutions