Al3+ doping reduces the electron/hole recombination in photoluminescent copper ferrite (CuFe2−Al O4) nanocrystallites

Abuilaiwi, Faraj Ahmad; Awais, Muhammad; Qazi, Umair Yaqub; Ali, Farman; Afzal, Adeel

doi:10.1016/j.bsecv.2020.11.007

Cited by 15 publications

(9 citation statements)

References 56 publications

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“…The lower intensities of these peaks can be attributed to the distorted crystal lattice of the CuFe 2 O 4 induced by sepiolite and GO. , The XRD pattern presented in Figure b confirms the cubic phase of the CuFe 2 O 4 NPs, which agrees with the JCPDS card no. 77-0010. , …”

Section: Resultsmentioning

confidence: 99%

Facile Preparation of Magnetic CuFe₂O₄ on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

Othman,

Banat,

Hasan

et al. 2023

ACS Omega

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CuFe 2 O 4 nanoparticles were synthesized and immobilized on sepiolite fibers and graphene oxide sheets, producing a CuFe 2 O 4 /sepiolite/GO (CFSG) nanocomposite via a facile single-pot method. The synthesized nanocomposite was characterized using TEM, FTIR, SEM−EDX, XRD, and TGA techniques to determine its composition, structure, and thermal stability. The adsorptive removal of Pb(II) and Cd(II) heavy metal ions from aqueous solutions was studied using the synthesized CFSG nanocomposite. Adsorption parameters such as CFSG loading, pH, contact time, and temperature were investigated. The CFGS nanocomposite showed a higher Pb(II) removal (q m = 238.1 mg/g) compared to Cd(II) (q m = 14.97 mg/g) in a Pb(II) and Cd(II) binary system. The Pb(II) and Cd(II) adsorption fitted well with the Langmuir model, followed by the pseudo-second-order model, and was found spontaneous. Adsorption thermodynamic analysis showed that the Pb(II) adsorption process was exothermic while Cd(II) adsorption was endothermic. The CuFe 2 O 4 nanoparticles on the CFSG surface could facilitate the adsorption of heavy metal ions through electrostatic interaction and complexation processes.

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Section: Resultsmentioning

confidence: 99%

Facile Preparation of Magnetic CuFe₂O₄ on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

Othman,

Banat,

Hasan

et al. 2023

ACS Omega

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“…This variation in interplanar spacing value is due to crystallite size, as when crystallite size is larger the interplanar spacing is smaller which may be due to stronger interatomic bonding. 49,50 3.2. Optical Properties.…”

Section: Resultsmentioning

confidence: 99%

“…The interplanar spacing is initially decreased, but on higher annealing temperature, it is increased which showed the structural dependence of thin films on the annealing temperature. This variation in interplanar spacing value is due to crystallite size, as when crystallite size is larger the interplanar spacing is smaller which may be due to stronger interatomic bonding. , …”

Section: Results and Discussionmentioning

confidence: 99%

Synthesis and Characterization of High-Efficiency Halide Perovskite Nanomaterials for Light-Absorbing Applications

Faridi

Imran

Tariq

et al. 2022

Ind. Eng. Chem. Res.

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Inorganic perovskite materials are possible candidates for conversion of solar energy to electrical energy due to their high absorption coefficient. Perovskite solar cells (PSCs) introduced a new type of device structure that has attention due to better efficiencies and interest in PSCs that has been increasing in recent years. Halide perovskite materials such as CsPbIBr2 show remarkable optical and structural performance with their better physical properties. Perovskite solar cells are a possible candidate to replace conventional silicon solar panels. In the present study, CsPbIBr2 perovskite materials’ thin films were prepared for light-absorbing application. Five thin films were deposited on the glass substrates by subsequent spin-coating of CsI and PbBr2 solutions, subsequently annealed at different temperature values (as-deposited, 100, 150, 200 and 250 °C) to get CsPbIBr2 thin films with a better crystal structure. Structural characterizations were made by using X-ray diffraction. CsPbIBr2 thin films were found to be polycrystalline in nature. With increasing annealing temperature, the crystallinity was improved, and the crystalline size was increased. Optical properties were studied by using transmission data, and by increasing annealing temperature, a small variation in optical band gap energy was observed in the range of 1.70–1.83 eV. The conductivity of CsPbIBr2 thin films was determined by a hot probe technique and was found to have little fluctuating response toward p-type conductivity, which may be due to intrinsic defects or presence of CsI phase, but a stable intrinsic nature was observed. The obtained physical properties of CsPbIBr2 thin films suggest them as a suitable candidate as a light-harvesting layer. These thin films could be an especially good partner with Si or other lower band gap energy materials in tandem solar cells (TSC). CsPbIBr2 material will harvest light having energy of ∼1.7 eV or higher, while a lower energy part of the solar spectrum will be absorbed in the partner part of the TSC.

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“…The materials employed must not actively interact with hydrogen or any other process. In addition, traditional storage methodologies using high-pressure gas cylinders (compressed hydrogen) and liquid hydrogen; the physical adsorption of H2 on materials with significant variables, such as a large specific surface area; and hydrogen intercalation in metals and complex hydrides resulting in the storage of H2 in metals have been thoroughly examined [53][54][55][56]. Reversible hydrogen storage was achieved with an acceptable performance by the 2LiBH 4 -MgH 2 system; however, high temperatures and poor dehydrogenation kinetics were encountered [57].…”

Section: Green Hydrogen Economy On the Movementioning

confidence: 99%

Future of Hydrogen as an Alternative Fuel for Next-Generation Industrial Applications; Challenges and Expected Opportunities

Qazi

2022

Energies

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A general rise in environmental and anthropogenically induced greenhouse gas emissions has resulted from worldwide population growth and a growing appetite for clean energy, industrial outputs, and consumer utilization. Furthermore, well-established, advanced, and emerging countries are seeking fossil fuel and petroleum resources to support their aviation, electric utilities, industrial sectors, and consumer processing essentials. There is an increasing tendency to overcome these challenging concerns and achieve the Paris Agreement’s priorities as emerging technological advances in clean energy technologies progress. Hydrogen is expected to be implemented in various production applications as a fundamental fuel in future energy carrier materials development and manufacturing processes. This paper summarizes recent developments and hydrogen technologies in fuel refining, hydrocarbon processing, materials manufacturing, pharmaceuticals, aircraft construction, electronics, and other hydrogen applications. It also highlights the existing industrialization scenario and describes prospective innovations, including theoretical scientific advancements, green raw materials production, potential exploration, and renewable resource integration. Moreover, this article further discusses some socioeconomic implications of hydrogen as a green resource.

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Al3+ doping reduces the electron/hole recombination in photoluminescent copper ferrite (CuFe2−Al O4) nanocrystallites

Cited by 15 publications

References 56 publications

Facile Preparation of Magnetic CuFe₂O₄ on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

Facile Preparation of Magnetic CuFe₂O₄ on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

Synthesis and Characterization of High-Efficiency Halide Perovskite Nanomaterials for Light-Absorbing Applications

Future of Hydrogen as an Alternative Fuel for Next-Generation Industrial Applications; Challenges and Expected Opportunities

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Al3+ doping reduces the electron/hole recombination in photoluminescent copper ferrite (CuFe2−Al O4) nanocrystallites

Cited by 15 publications

References 56 publications

Facile Preparation of Magnetic CuFe2O4 on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

Facile Preparation of Magnetic CuFe2O4 on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

Synthesis and Characterization of High-Efficiency Halide Perovskite Nanomaterials for Light-Absorbing Applications

Future of Hydrogen as an Alternative Fuel for Next-Generation Industrial Applications; Challenges and Expected Opportunities

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Product

Resources

About

Facile Preparation of Magnetic CuFe₂O₄ on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

Facile Preparation of Magnetic CuFe₂O₄ on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution