TmVO4/Fe2O3 nanocomposites: Sonochemical synthesis, characterization, and investigation of photocatalytic activity

Panahi, Atefeh; Monsef, Rozita; Imran, Merzah Kareem; Mahdi, Ayat Abdul; Ruhaima, Ali Abdul Kadhim; Salavati‐Niasari, Masoud

doi:10.1016/j.ijhydene.2022.10.226

Cited by 40 publications

(12 citation statements)

References 47 publications

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“…Moreover, to understand the higher photocatalytic activity of SA-CuS nanostructures synthesized at pH 7. 4 desorption isotherms were measured (Figure S18). All of the SA-CuS nanostructures showed type-IV isotherms and the highest N 2 adsorption of 6.51 cm 3 /g was recorded for SA-CuS@pH7.4 (Figure S18a) followed by 3.9 cm 3 /g for SA-CuS@pH10 (Figure S18b) and 1.8 cm 3 /g for SA-CuS@pH13 (Figure S18c).…”

Section: •−mentioning

confidence: 99%

“…Several chemical approaches, such as advanced oxidation processes, ozonation, Fenton’s reagent, etc., and physical processes, namely, sedimentation, flocculation, adsorption, reverse osmosis, etc., are employed to remediate water bodies . Recently, photocatalysis has gained significant importance owing to its environmentally friendly process, where no additional energy is required during the degradation process. − Additionally, harvesting visible light for an efficient photoconversion process has gained tremendous scientific importance. From this point of view, nanostructures, that can efficiently absorb visible light and generate charge carriers, have shown promise toward enzymatic and chemical photoreactions. − Moreover, nanomaterials, in the form of zeolite, oxide, and sulfide synthesized by a variety of techniques, have shown potential for multifunctional modern-day applications. − However, the best photocatalysts should be abundant, inexpensive, safe, extremely durable, and reusable.…”

Section: Introductionmentioning

confidence: 99%

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Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

2023

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The use of visible light to propel chemical reactions is an exciting area of study that is crucial in the current socioeconomic environment. However, various photocatalysts have been developed to harness visible light, which consume high energy during synthesis. Thus, synthesizing photocatalysts at gel–liquid interfaces in ambient conditions is of scientific importance. Herein, we report an environmentally benign sodium alginate gel being used as a biopolymer template to synthesize copper sulfide (CuS) nanostructures at the gel–liquid interface. The driving force for the synthesis of CuS nanostructures is varied by changing the pH of the reaction medium (i.e., pH 7.4, 10, and 13) to tailor the morphology of CuS nanostructures. The CuS nanoflakes obtained at pH 7.4 transform into nanocubes when the pH is raised to 10, and the nanostructures deform at the pH of 13. Fourier transform infrared spectroscopy (FTIR) confirms all the characteristic stretching of sodium alginate, whereas the CuS nanostructures are crystallized in a hexagonal crystal system, as revealed by the powder X-ray diffraction analysis. The high-resolution X-ray photoelectron spectroscopy (XPS) spectra show the +2 and −2 oxidation states of copper (Cu) and sulfur (S) ions, respectively. The CuS nanoflakes physisorbed a higher concentration of greenhouse CO2 gas. Owing to a lower band gap of CuS nanoflakes synthesized at a pH of 7.4, compared to other CuS nanostructures prepared at pH 10 and 13, CuS photocatalytically degrades 95% of crystal violet and 98% of methylene blue aqueous dye solutions in 60 and 90 min, respectively, under blue light illumination. Additionally, sodium alginate–copper sulfide (SA-CuS) nanostructures synthesized at a pH of 7.4 demonstrate excellent performance in photoredox reactions to convert ferricyanide to ferrocyanide. The current research opens the door to developing new photocatalytic pathways for a wide range of photochemical reactions involving nanoparticle-impregnated alginate composites prepared on gel interfaces.

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Section: •−mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

2023

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“…α-Fe 2 O 3 nanoparticles were synthesised using T. aurea leaf extract and characterised using various techniques [18]. Historically, silver has been used as a conductive wire in circuits that need low dissipation and high conductivity [21][22][23][24]. Reported photocatalytic and electrocatalytic ternary systems of Fe 2 O 3 /EuVO 4 /g-C 3 N 4 nanocomposites were synthesised through a son chemical procedure.…”

Section: Introductionmentioning

confidence: 99%

“…Reported photocatalytic and electrocatalytic ternary systems of Fe 2 O 3 /EuVO 4 /g-C 3 N 4 nanocomposites were synthesised through a son chemical procedure. Also, the photocatalytic activity of nanostructures and hybrid nanocomposites was investigated using cationic Rhodamine B dye under visible source irradiation [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, evaluation, and monitoring of red amaranth extract for power production

Tanisa,

Khan,

Salahuddin

2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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The scientific paper describes the synthesis of silver nanoparticles (Ag NPs) using a fresh red amaranth preparation and explores their potential to enhance the output current of a red amaranth bio-electrolytic cell. The study employed various analytical techniques such as x-ray diffraction (XRD), Fourier transform infrared (FTIR), ultraviolet-visible spectroscopy (UV–vis), dynamic light scattering (DLS), and Raman spectroscopy to characterise and detect the nanoparticles. The UV–vis analysis of the dripping media containing silver nanoparticles exhibited an absorption peak, indicating the presence of the nanoparticles. FTIR was utilised to examine the interaction between the biomaterial components and the oxidation and wrapping of silver nanoparticles. XRD analysis revealed that the synthesised nanoparticles possessed a naturally columnar shape and a face-centered cubic (FCC) structure. The average size and morphology of the nanoparticles were characterised by dynamic light scattering (DLS). Raman spectra revealed the unique surface-enhancing properties of synthesised Ag NPs. The research presented in the paper highlights the remarkable performance of silver nanoparticles in bio-electrolyte power generation systems. It emphasises a straightforward, cost-effective, and environmentally friendly method for producing Ag NPs using red amaranth extract. These findings contribute to the development of a novel framework for bio-electrochemical cells and emphasise the importance of further research on the effects of Ag NPs on these cells. It is found that the open circuit voltage is 3.254 V, short circuit current is 2.256 mA, and load current is 1.987 mA before using the Ag NPs and open circuit voltage is 5.678 volts, short circuit current is 4.212 mA, and load current is 2.887 mA after using the Ag NPs. It is seen that the values of the three parameters have been increased after using the Ag NPs, which ensured the significance of the use of Ag NPs.

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“…Hence, discharging the used organic dyes into the environment causes serious problems to the ecosystems and living organisms including human beings. 4,5 For example, crystal violet dye is carcinogenic, teratogenic and mutagenic even at very low concentration. [6][7][8] Hence, it is important to remove the organic dyes from the industry water before discharging into water bodies and the environment.…”

Section: Introductionmentioning

confidence: 99%

Highly enhanced cationic dye adsorption from water by nitro-functionalized Zn-MOF nano/microparticles and a biomolecular binder for improving the reusability

Arunkumar,

Pannipara,

Al-Sehemi

et al. 2024

CrystEngComm

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TmVO4/Fe2O3 nanocomposites: Sonochemical synthesis, characterization, and investigation of photocatalytic activity

Cited by 40 publications

References 47 publications

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

Synthesis, evaluation, and monitoring of red amaranth extract for power production

Highly enhanced cationic dye adsorption from water by nitro-functionalized Zn-MOF nano/microparticles and a biomolecular binder for improving the reusability

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