A study of morphology, UV measurements and zeta potential of Zinc Ferrite and Al2O3 nanofluids

Singh, Vandita; Kumar, Ajay; Alam, Mahmood; Kumar, Ashwini; Kumar, Parveen; Goyat, Vikas

doi:10.1016/j.matpr.2022.02.371

Cited by 22 publications

(4 citation statements)

References 11 publications

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“…52,53 Anushree et al 54 used UV−vis spectrophotometry to report that the absorbance of γ-Al 2 O 3 nanofluids was the smallest in the 300−900 nm wavelength region, while the absorbance of α-Al 2 O 3 nanofluids increased rapidly over time, indicating that α-Al 2 O 3 had the highest stability among the nanofluids. Singh et al 55 analyzed the wavelength dispersion characteristics of Al 2 O 3 and zinc ferrite (ZnFeO 2 ) nanofluids in the 200−600 nm wavelength region using UV− vis spectrophotometry and found that the absorbance increased alongside a rising nanofluid concentration and was stable with the inclusion of 0.5 wt % nanoparticles.…”

Section: Classification and Preparation Of Nanofluidsmentioning

confidence: 99%

Review and Perspectives of CO₂ Absorption by Water- and Amine-Based Nanofluids

et al. 2023

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The emission of greenhouse gases, especially CO2, has become a major cause of environmental degradation, and carbon capture, utilization, and storage (CCUS) is a proposed solution to mitigate its impact. Nanofluids, a relatively new method for CO2 absorption, have gained attention in recent years. This review focuses on conventional methods for preparing nanofluids along with techniques to improve their stability and enhance the CO2 absorption and desorption mechanisms. Additionally, the influences of factors, i.e., nanoparticle and base solution types as well as nanoparticle concentration, on the CO2 absorption process are summarized. Furthermore, models that can predict the absorption of CO2 accurately are outlined. It is found that the types of both base liquids and nanoparticles have an important impact on the absorption by nanofluids. In-depth studies on the predictive capabilities of artificial intelligence (AI) models hold immense potential in this regard. This review also puts forth effective strategies to address prevailing challenges. This will provide a solid theoretical basis for this field and underscore the promising potential of nanofluids as CO2 solvents. There are still many unexplored aspects to be considered, such as the economic viability and energy consumption of this technology.

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Section: Classification and Preparation Of Nanofluidsmentioning

confidence: 99%

Review and Perspectives of CO₂ Absorption by Water- and Amine-Based Nanofluids

et al. 2023

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“…8a, the zeta potential decreased with the increasing pH after adding xanthate collectors. However, this increases the sulfidization of the malachite surface and the xanthate collector's adsorption, attempting to point to the malachite surface's high stability (Singh et al, 2022).…”

Section: Zeta Potential Measurementsmentioning

confidence: 99%

Role of ammonium phosphate in improving the physical characteristics of malachite sulfidation flotation

Ibrahim¹,

Jia²,

Cai³

et al. 2023

Physicochem. Probl. Miner. Process.

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In this study, ammonium phosphate ((NH4)3PO4) was employed to realize improvement by modifying the physical characteristics of the malachite surface, ensuring sustainable flotation throughout the flotation operations, and enhancing the flotation process to be more stable. Furthermore, various techniques, including X−ray photoelectron spectroscopy, were intensely used to investigate the configuration and physico-chemical surface characteristics through micro-flotation experiments, contact angle and zeta potential measurements, and XRD, ToF−SIMS, EPMA, and FTIR spectrum analyses. The FTIR findings showed that new characteristic peaks of −C(=S)−N.H. groups formed and adsorbed on the surfaces of malachite at 1636 cm-1. The −CH2 groups throughout the flotation process, further promoted the attachment of the CH3 ligand to the Cu2+ ion, and the XPS analysis confirmed this. Consequently, it can be concluded that (NH4)3PO4 played a substantial part in the improved recovery rate, as demonstrated and confirmed by the methods carried out in this study. Thus, it was used to modify the physical properties surface before adding Na2S to efficiently enhance malachite floatability and reduce the loss rate of malachite. Regarding the alterations in the physical characteristics which occurred to the malachite surface, and as a consequence of increasing the recovery results of flotation, the malachite sample treated initially with (NH4)3PO4 exhibited micro flotation results with a considerably greater flotation recovery than malachite treated initially with only Na2S ions.

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“…Rigorous experimentation was conducted to unravel the tribological and mechanical behavior of the resultant AA6061 metal matrix composite. This comprehensive assessment included the Charpy impact test, scratch test, pin-on-disc test, and Rockwell hardness test (Manimaran et al, 2018;Kumar et al, 2019;Singh et al, 2022;Kumar RR. et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Exploring tribological properties in the design and manufacturing of metal matrix composites: an investigation into the AL6061-SiC-fly ASH alloy fabricated via stir casting process

Kumar Murmu,

Chattopadhayaya,

Cep

et al. 2024

Front. Mater.

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This study investigates a novel methodology to intricately craft a HAMMC and thoroughly examine its multifaceted mechanical and tribological characteristics. By combining silicon carbide (SiC) and fly ash as reinforcements, a unique identity is bestowed upon this hybrid composite, enhancing its structural integrity and functional attributes. Stir casting is the chosen methodology for fabricating this composite, favored for its economic viability and suitability for large-scale manufacturing. In this research, the emphasis is on developing a cost-effective composite that not only meets stringent economic considerations but also exhibits improved material properties. Within the realm of hybrid metal matrix composites, the well-regarded Al6061 takes on the role of the matrix material, while the synergistic inclusion of fly ash and SiC serves as reinforcing constituents. Three specimens with compostion 90% Al6061 + 5% SiC +5% Fly ash, 90% Al6061 + 10% SiC +6% Fly ash and 90% Al6061 + 15% SiC +7% Fly ash were fabricated. To unravel the intricacies of the fabricated Al6061 metal matrix composite, comprehensive tests are employed. These tests, including the Pin-on Disc test, Scratch test, Rockwell Hardness test, and Charpy Impact test, collectively work to unveil the nuanced tribological and mechanical behaviors encapsulated within this innovative alloy. The results indicated significant improvement in wear resistance in specimen comprising 78% Al6061 + 15% SiC +7% Fly Ash and volumetric loss found to have 0.96 g. Superior hardness characteristics and enhanced abrasion resistance found in 78% Al6061 + 15% SiC +7% Fly Ash than other two specimens. The highest impact strength exhibited in 90% Al 6,061 + 5% SiC +5% Fly ash specimen.

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A study of morphology, UV measurements and zeta potential of Zinc Ferrite and Al2O3 nanofluids

Cited by 22 publications

References 11 publications

Review and Perspectives of CO₂ Absorption by Water- and Amine-Based Nanofluids

Review and Perspectives of CO₂ Absorption by Water- and Amine-Based Nanofluids

Role of ammonium phosphate in improving the physical characteristics of malachite sulfidation flotation

Exploring tribological properties in the design and manufacturing of metal matrix composites: an investigation into the AL6061-SiC-fly ASH alloy fabricated via stir casting process

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A study of morphology, UV measurements and zeta potential of Zinc Ferrite and Al2O3 nanofluids

Cited by 22 publications

References 11 publications

Review and Perspectives of CO2 Absorption by Water- and Amine-Based Nanofluids

Review and Perspectives of CO2 Absorption by Water- and Amine-Based Nanofluids

Role of ammonium phosphate in improving the physical characteristics of malachite sulfidation flotation

Exploring tribological properties in the design and manufacturing of metal matrix composites: an investigation into the AL6061-SiC-fly ASH alloy fabricated via stir casting process

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Product

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Review and Perspectives of CO₂ Absorption by Water- and Amine-Based Nanofluids

Review and Perspectives of CO₂ Absorption by Water- and Amine-Based Nanofluids