Chemical synthesis of aluminum nanoparticles

Ghanta, Sekher Reddy; Muralidharan, Krishnamurthi

doi:10.1007/s11051-013-1715-1

Cited by 47 publications

(25 citation statements)

References 19 publications

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“…Aluminum oxide nanoparticles (AlO NP) are thermodynamically stable over a wide temperature range and have a corundum-like structure with oxygen atoms and Al 3+ ions (Tavakoli et al 2013). AlO NP are also highly effective catalysts and carry a positive charge on their surfaces at near-neutral pH; thus, they have been used as catalysts in propellants and pyro-techniques (Ghanta and Muralidharan 2013). Moreover, AlO NP have been widely studied over the past 10 years in a wide range of applications, including dispersion-strengthening, nanocomposites, catalyst support, transparent conductive coatings, biomaterials, food processing, drug delivery, transparent optical coatings, wear-resistant additives and material surface coating (Mukherjee et al 2006;Ravishankar and Jamuna 2011;Willhite et al 2014).…”

Section: Introductionmentioning

confidence: 99%

A higher aspect ratio enhanced bioaccumulation and altered immune responses due to intravenously-injected aluminum oxide nanoparticles

Park

Kim

Kang

et al. 2016

Journal of Immunotoxicology

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Aluminum oxide nanoparticles (AlO NP) have been widely utilized in a variety of areas, including in the optical, biomedical and electronic fields and in the overall development of nanotechnologies. However, their toxicological profiles are still not fully developed. This study compared the distribution and immunotoxicity of two rod-types of AlO NP. As reported previously, the two types of AlO NP had different aspect ratios (long-type: 6.2 ± 0.6, short-type: 2.1 ± 0.4), but the size and surface charge were very similar. On Day 14 after a single intravenous (IV) injection (1.25 or 5 mg/kg), both AlO NP accumulated primarily in the liver and spleen and altered the levels of redox response-related elements. The accumulated level was higher in mice exposed to the long-type AlO NP compared to the short-type. Additionally, it was noted that the levels of IL-1β, IL-8 and MCP-1 were enhanced in the blood of mice exposed to both types of AlO NP and the percentages of neutrophils and monocytes among all white blood cells were increased only in mice injected with the long-type AlO NP (5 mg/kg). In addition, as compared to the control, co-expression of CD80 and CD86 (necessary for antigen presentation) on splenocytes together with a decreased expression of chemotaxis-related marker (CD195) was attenuated by exposure to the AlO NP, especially the long-type. Taken together, the data suggest that accumulation following a single IV injection with rod-types of AlO NP is strengthened by a high aspect ratio and, subsequently, this accumulation has the potential to influence immune functions in an exposed host.

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Section: Introductionmentioning

confidence: 99%

A higher aspect ratio enhanced bioaccumulation and altered immune responses due to intravenously-injected aluminum oxide nanoparticles

Park

Kim

Kang

et al. 2016

Journal of Immunotoxicology

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“…For instance, NPs with size of 500 nm were presented in their work. Ghanta et al [ 14 ] synthesized Al-NPs using the arc discharge process by applying direct current between Al electrodes in a liquid environment without the use of vacuum. In 2010, Kermanpur et al [ 15 ] applied the ELGC process in a different experimental setup and Al-NPs with size of 95 nm were synthesized using Ar flow rate of 15 L/min.…”

Section: Introductionmentioning

confidence: 99%

“…The appropriate parameters for the synthesis of Al-NPs are determined. Moreover, the metallic sample, which is prepositioned in an electromagnetic field generated by induction coils of appropriate geometry, is melted and levitated stably [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. It should be mentioned that the experimental setup, which is used in this study, does not require costly equipment and can be upscaled to industrial applications with lower investment costs and expenses.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis and Characterization of High-Purity Aluminum Nanoparticles (Al-NPs) by Electromagnetic Levitation Gas Condensation (ELGC)

2020

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The production of high-purity aluminum nanoparticles (Al-NPs) is challenging due to the highly reactive nature of Al metals. Electromagnetic levitation gas condensation (ELGC) is a promising method to produce high-purity metallic particles as it avoids the interaction between molten metal and refractory-lined, which guarantees the removal of impurities such as oxygen (O). In this research, high-purity Al-NPs were successfully fabricated via ELGC process and fully characterized. The effects of power input and gas flow rate on particle size and distribution were analyzed using field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), and dynamic light scattering (DLS). The results showed that the Al-NPs have spherical morphologies with an average diameter of 17 nm and size distribution of NPs is narrow under helium (He) flow rate of 15 L/min at a constant temperature of 1683 ± 10 K. The purity of the NPs was confirmed by utilizing X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), and X-ray fluorescence (XRF). Finally, metal purity of 99.976% and 99.97% was measured by AAS and XRF analyses, respectively. Moreover, it was found that increasing gas flow rate and sample temperature results in a decrease in the particle size. The particle sizes for the Al-NPs obtained under He atmosphere were smaller than those obtained under Ar atmosphere.

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“…Various techniques are used to prepare NAP and these are divided into high temperature and low temperature processes. The high temperature techniques include gas evaporation [13][14][15][16], plasma chemical synthesis [17][18][19][20][21][22], laser ablation [23], arc discharge [24][25][26], electro-explosion [27][28][29][30], and ion implantation [31], whereas the low temperature techniques include solution methods [32][33][34][35][36][37][38] and mechanical attrition (ball milling) [39][40]. However, producing bulk NAP continues to be a technical challenge.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nano Aluminium Powder (NAP) using a Thermal Plasma: Process Development and Characterization

Pant¹,

Seth²,

Raut³

et al. 2016

Cent. Eur. J. Energ. Mater.

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A bottom up approach for the preparation of Nano Aluminium Powder (NAP) using a Transferred Arc Thermal Plasma Reactor (TAPR) is described. The aluminium block is subjected to evaporation by the application of a thermal plasma. The aluminium vapour produced is rapidly quenched to room temperature resulting in crystallization of the aluminium vapour in nano-particulate form. Various process parameters, such as the plasma torch power, reactor pressure and plasma gas composition were optimized. This paper also describes the characterization of NAP by analytical methods, for the estimation of the Active Aluminium Content (AAC), Total Aluminium Content (TAC), XRD, bulk density, BET surface area, HR-TEM etc. The results are compared with those for samples prepared in other thermal plasma reactors, such as the DC Arc Plasma Reactor (DCAPR) and the RF Induction Thermal Plasma Reactor (RFITPR), and for commercially available NAP samples (ALEX, prepared by the EEW technique).

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Chemical synthesis of aluminum nanoparticles

Cited by 47 publications

References 19 publications

A higher aspect ratio enhanced bioaccumulation and altered immune responses due to intravenously-injected aluminum oxide nanoparticles

A higher aspect ratio enhanced bioaccumulation and altered immune responses due to intravenously-injected aluminum oxide nanoparticles

Experimental Analysis and Characterization of High-Purity Aluminum Nanoparticles (Al-NPs) by Electromagnetic Levitation Gas Condensation (ELGC)

Preparation of Nano Aluminium Powder (NAP) using a Thermal Plasma: Process Development and Characterization

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