Medicinal honeycomb ceria nanoparticles’ fabrication by using green synthesis method

Khalid, Naila Batool; Sarwar, Musavarah; Rakha, Allah; Khalid, Ahmad Mukhtar; Munawar, Anam; Riaz, Ahsan; Rehman, Rahat Abdul; Akhtar, Sareen

doi:10.1007/s13204-022-02575-7

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…The grain sizes of the nanoparticle deposits are calculated using the Debye Scherrer equation L = ( K λ β cos ⁡ θ ) …”

Section: Resultsmentioning

confidence: 99%

“…During the electroplating process of composite materials, graphene enhances nucleation by forming a disordered arrangement in the matrix or diffusing on the surface toward the growth center of graphene. This mechanism of increasing nucleation and hindering the growth of composite material crystals leads to a reduction in grain size …”

Section: Resultsmentioning

confidence: 99%

“…This mechanism of increasing nucleation and hindering the growth of composite material crystals leads to a reduction in grain size. 42 3.2. Raman Analysis.…”

Section: Corrosion Resistance Measurementsmentioning

confidence: 99%

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Ni/Graphene Coating for Enhanced Corrosion Resistance of Metal Foam Flow Field in Simulated PEMFC Cathode Environment

Sun,

Hu,

Cao

et al. 2024

ACS Omega

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Metal foam flow field suffers serious corrosion issues in proton exchange membrane fuel cells due to its large surface area. Ni and Ni/graphene coatings are prepared under constant and gradient current modes, respectively, to improve the corrosion resistance. The effect of the electrodeposition current mode and the deposition mechanism is studied. Compared with Ni coating, Ni/graphene coating brings low corrosion current density and high coating resistance, effectively enhancing the stability of Ni foam in an acidic environment. Different from Ni coating with a single layer, Ni/graphene deposits have core−shell structure, with graphene coated on the surface of Ni nanoparticles. It is shown that graphene deposits cover the Ni particles during the electrodeposition, which protects nickel particles from agglomeration and forms an inert film on the surface of the porous structure.After an 8 h constant potential test, no significant pitting is observed on the surface of Ni/graphene coating, showing excellent anticorrosion performance. As to the effect of the deposition current mode, it is shown that more composite particles deposit on the upper layer under the gradient current mode, which brings denser protective film and fewer surface defects on the surface. Ni/ graphene coating electrodeposited under a gradient current mode between 0 and 10 mA•cm −2 exhibits the lowest corrosion current densities. The values at 50 and 80 °C are only 62.9 and 26.0% of those of uncoated Ni foam, respectively.

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“…The grain sizes of the nanoparticle deposits are calculated using the Debye Scherrer equation L = ( K λ β cos ⁡ θ ) …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Ni/Graphene Coating for Enhanced Corrosion Resistance of Metal Foam Flow Field in Simulated PEMFC Cathode Environment

Sun,

Hu,

Cao

et al. 2024

ACS Omega

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“…Al-Saleh et al [39] noted that eye shadows containing darker color pigments tend to exhibit elevated levels of heavy metals. Additionally, Khalid et al [49] identified that dark brown lipsticks with shocking pink colors displayed the highest heavy metal concentrations, while cosmetics with a pink coloration had lower metal content. The mean concentration of Cd presented by Ziarati et al [50] in 120 lipstick samples from Iran and China was lower than 1.2 mg/kg.…”

Section: Cadmium (Cd)mentioning

confidence: 99%

Elemental burdens of cosmetics and associated health and environmental impacts: A global view

Ebenezer Ebo Yahans Amuah,

Kwabena Antwi,

Nelson Awuah Ankamah

2023

World J. Adv. Res. Rev.

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The use of diverse chemicals in beauty, skin, hair, and nail care products may be traced back to ancient times. Preservatives, stabilizers, mineral pigments, colour, and shine were added to these goods to improve their quality and increase their effects. This review which covers 28 countries, highlights the heavy metal content of some cosmetics, and their associated health and environmental implications, and the use of multivariate statistics to understand the dynamics and interrelationship between the elements. From the study, cosmetic products pose debilitating impacts on human health because some products contain potentially toxic elements including Pb, Zn, Cd, As, Fe, Sb, Cr, Co, Hg, and Ni beyond allowable levels. However, the concentrations of these elements in cosmetics are country, product, and manufacturer variants. Principal Component Analysis (PCA) and correlation matrix revealed possible interrelationships between different elements in cosmetic products, which have harmful implications. This suggests potential harmful interactions and the need for strict safety measures in their formulation and usage. Indiscriminate disposal of these products containing toxic heavy metals may pose detrimental impacts on the environment and various ecological systems. It is recommended that manufacturers of cosmetics invest in non-toxic materials that pose no or fewer impacts on the environment and consumer health.

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Justification of technologies for the synthesis of mineral nanoparticles for the creation of magnetic smart textile

2023

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Medicinal honeycomb ceria nanoparticles’ fabrication by using green synthesis method

Cited by 4 publications

References 31 publications

Ni/Graphene Coating for Enhanced Corrosion Resistance of Metal Foam Flow Field in Simulated PEMFC Cathode Environment

Ni/Graphene Coating for Enhanced Corrosion Resistance of Metal Foam Flow Field in Simulated PEMFC Cathode Environment

Elemental burdens of cosmetics and associated health and environmental impacts: A global view

Justification of technologies for the synthesis of mineral nanoparticles for the creation of magnetic smart textile

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