Graphene oxide supported Fe2(MoO4)3 nano rods assembled round-ball fabrication via hydrothermal route and photocatalytic degradation of nonsteroidal anti-inflammatory drug

Ahmad, Manzoor; Bhatti, Ijaz Ahmad; Qureshi, Khizar; Ahmad, Naseeb; Nisar, Jan; Zuber, Muhammad; Ashar, Ambreen; Khan, M.I.; Iqbal, Munawar

doi:10.1016/j.molliq.2019.112343

Cited by 57 publications

(17 citation statements)

References 60 publications

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“…During photocatalytic degradation of dye, electrons are excited from VB to the CB when material is irradiated under light, which resulting in the formation of electronhole pair. 23,45 It was observed that PCA of La 1−y Gd y Ni 1 −x Co x O 3 was increased by doping with Gd and Co. Indeed, the Gd and Co tuned the band gap of doped material, which generates defects in the structure that helps in the trapping of electron/hole that inhibits the recombination process and resultantly, PCA was enhanced.…”

Section: Photocatalytic Activity (Pca)mentioning

confidence: 99%

“…The PCA of related material is given in Table 3 and results of present investigation revealed that La 1−y Gd y Ni 1−x Co x O 3 is highly efficient for the degradation of dyes under visible light irradiation, which is regarded as economical process in comparison to materials active under UV light irradiation. 6,7,22,23,45,46 The water contamination with dyes and other pollutants is one of leading environmental issue 13,[47][48][49][50] and there is a need to treat wastewater before being discharged into the water bodies using efficient and eco-benign techniques and La 1 −y Gd y Ni 1−x Co x O 3 proved to be highly efficient in this regard vs methods employed for the treatment of wastewater. [14][15][16][17][18][51][52][53][54][55][56][57] Figure 17A-C represents the RhB dye degradation kinetics.…”

Section: Photocatalytic Activity (Pca)mentioning

confidence: 99%

“…20,21 To overcome the low efficiency and related issues, the doped materials have been developed and applied as a catalyst in advanced oxidation process (AOPs). 7,22,23 The doping of (A/B site) by a variety of ions of rare and transition metals in ABO 3 type of LaNiO 3 creates many holes in the valence band, which decreases the energy band gap resulting an improved efficiency of material in photocatalysis. Various properties of ABO 3 type perovskite materials, that is, electrical, dielectric, ferroelectric, magnetic, and photocatalytic activities are significantly affected by partial or complete doping/ substitutions of A or B site cations with desired metal cations for the enhancement of characteristic desired properties.…”

Section: Introductionmentioning

confidence: 99%

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Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO ₃ and effect of doping on photochemical, electrochemical, and ferroelectric properties

2021

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Gadolinium-and Cobalt-doped La 1−y Gd y Ni 1−x Co x O 3 perovskite nanoparticles were synthesized using facile micro-emulsion route to investigate the doping effect of Gadolinium and Cobalt on structural, morphological, dielectric, electrochemical, and photocatalytic activities of LaNiO 3 . The characterization of as-synthesized material was performed using X-ray diffraction, scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), UV-visible, and Raman scattering techniques. Structural analysis of Gd-and Co-doped LaNiO 3 shows single-phase distorted rhombohedral structure with successful doping of Gd and Co and particles size was estimated in the range of 25-45 nm with heterogeneous morphology. The CV (cyclic voltammetry), EIS (electrochemical impedance spectroscopy), and current-voltage (I-V) analysis revealed that the Gd and Co doping enhanced the electrical properties of LaNiO 3 . CV and EIS of Gd-and Co-doped composition (x, y = 0.50) electrode shows higher specific capacitance (148 Fg −1 ) vs undoped LaNiO 3 (95 Fg −1 ). The (I-V) results revealed that conductivity was improved by Gd and Co doping, the conductivity values for composition (x, y = 0.50) were 3.01 × 10 4 S/m vs 2.08 × 10 −3 S/m for undoped LaNiO 3 . Frequency dependent dielectric properties of La 1−y Gd y Ni 1 −x Co x O 3 synthesized material show decreasing trend in dielectric constant, dielectric loss, tangent loss by increase in frequency and AC conductivity was increased by the doping of Gd and Co in LaNiO 3 . Resistivity measurements show a decrease in resistivity by Gd and Co doping. Ferroelectric loop of the Gd-and Co-doped material shows an increased ferroelectric nature than LaNiO 3 . Photoluminescence spectra show an excitation peaks in visible region, which decreases as the dopant content (x, y) was increased. The band gap energy (E g ) was estimated using Tauc's plot and it was observed that by increasing the dopant (x,y) contents, the band gap was decreased (3.25-2.53 eV). Photocatalytic activity of LaNiO 3 and La 1−y Gd y Ni 1−x Co x O 3 was tested for Rhodamine B (RhB) dye under solar light irradiation. Result shows that the doped material was significantly more photocatalytically active than

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Section: Photocatalytic Activity (Pca)mentioning

confidence: 99%

Section: Photocatalytic Activity (Pca)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO ₃ and effect of doping on photochemical, electrochemical, and ferroelectric properties

2021

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“…Hence, the rate of photocatalytic degradation was decreased regularly due to the intermediate compounds that were formed through the reaction and then effect on the activity of catalyst. 68,70 Generally, photocatalytic degradation kinetics of heterogeneous organic compounds could be successfully illustrated using the Langmuir-Hinshelwood (L-H) equation to describe the kinetics of photocatalytic process of MNZ over the MgO NP surface. Moreover, the L-H model was usually used to cover the relationship between initial rate of photocatalytic and initial concentration of the reactant.…”

Section: Isotherm Models For Adsorption Studymentioning

confidence: 99%

<p>Differentiation Between Metronidazole Residues Disposal by Using Adsorption and Photodegradation Processes Onto MgO Nanoparticles</p>

Bouraie

Ibrahim

2020

IJN

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Background: Metronidazole (MNZ) is an antibiotic form that is considered as a dangerous environmental pollutant due to its widespread use as growth promoters in livestock and aquaculture operations along with its therapeutic application for humans. Purpose: The objective of this work was to conduct a comparative study between the efficiency of the adsorption and photocatalytic degradation of MNZ in an aqueous solution by using magnesium oxide nanoparticles (MgO NP) under different effects, as well as evaluate the performance, reusability and cost study. Materials and Methods: Several instruments such as XRD, EDX, SEM, and TEM were used to characterize the chemical composition and morphological properties of the synthesized MgO NP, while the GC-MS analysis was used to monitor the degradation pathway of MNZ particles within 180 min. The simple photo-batch reactor was used to investigate the degradation of MNZ under the effect of UV radiation, initial concentration of MNZ, pH, catalyst loading, inorganic salts addition, time, and temperature. Results: The degradation efficiency is mainly divided into two steps: 35.7% for maximum adsorption and 57.5% for photodegradation. Adsorption isotherm models confirmed that the process nature is chemisorption and appropriate Langmuir model, as well as to be a nonspontaneous and endothermic reaction according to the thermodynamic study. Adsorption constant during dark condition is smaller than typical adsorption equilibrium constant derived from the Langmuir-Hinshelwood kinetic model through photodegradation of MNZ that follows pseudo-first-order kinetics. Toxicity rates were reduced considerably after the photodegradation process to 88.21%, 79.84%, and 67.32% and 57.45%, 51.98%, and 43.87% by heamolytic and brine shrimp assays, respectively, for initial MNZ concentrations (20, 60, and 100 mg/L). Conclusion: We significantly recommend using MgO NP as a promising catalyst in the photodegradation applications for other organic pollutants in visible light.

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“…Other kinds of GO composites are those with the anti-inflammatory properties. They were formed using Fe 2 (MoO 4 ) 3 nanorods [ 24 ], aerogel (GA)-supported metal-organic framework (MOF) particles [ 25 ] and polyoxotungstate [ 26 ]. There is also another great research area that uses graphene composites: regenerative tissue engineering.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Graphene Oxide and Reduced Graphene Oxide Composites with Inorganic Nanoparticles for Biomedical Applications

et al. 2020

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Graphene oxide (GO) and reduced graphene oxide (RGO), due to their large active surface areas, can serve as a platform for biological molecule adhesion (both organic and inorganic). In this work we described methods of preparing composites consisting of GO and RGO and inorganic nanoparticles of specified biological properties: nanoAg, nanoAu, nanoTiO2 and nanoAg2O. The idea of this work was to introduce effective methods of production of these composites that could be used for future biomedical applications such as antibiotics, tissue regeneration, anticancer therapy, or bioimaging. In order to characterize the pristine graphene materials and resulting composites, we used spectroscopic techniques: XPS and Raman, microscopic techniques: SEM with and AFM, followed by X-Ray diffraction. We obtained volumetric composites of flake graphene and Ag, Au, Ag2O, and TiO2 nanoparticles; moreover, Ag nanoparticles were obtained using three different approaches.

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Graphene oxide supported Fe2(MoO4)3 nano rods assembled round-ball fabrication via hydrothermal route and photocatalytic degradation of nonsteroidal anti-inflammatory drug

Cited by 57 publications

References 60 publications

Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO ₃ and effect of doping on photochemical, electrochemical, and ferroelectric properties

Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO ₃ and effect of doping on photochemical, electrochemical, and ferroelectric properties

<p>Differentiation Between Metronidazole Residues Disposal by Using Adsorption and Photodegradation Processes Onto MgO Nanoparticles</p>

Synthesis and Characterization of Graphene Oxide and Reduced Graphene Oxide Composites with Inorganic Nanoparticles for Biomedical Applications

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Graphene oxide supported Fe2(MoO4)3 nano rods assembled round-ball fabrication via hydrothermal route and photocatalytic degradation of nonsteroidal anti-inflammatory drug

Cited by 57 publications

References 60 publications

Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO 3 and effect of doping on photochemical, electrochemical, and ferroelectric properties

Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO 3 and effect of doping on photochemical, electrochemical, and ferroelectric properties

<p>Differentiation Between Metronidazole Residues Disposal by Using Adsorption and Photodegradation Processes Onto MgO Nanoparticles</p>

Synthesis and Characterization of Graphene Oxide and Reduced Graphene Oxide Composites with Inorganic Nanoparticles for Biomedical Applications

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Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO ₃ and effect of doping on photochemical, electrochemical, and ferroelectric properties

Visible‐light‐driven photocatalytic efficiency of Co‐ and Gd‐doped LaNiO ₃ and effect of doping on photochemical, electrochemical, and ferroelectric properties