Journal of Thermodynamics & Catalysis
Open Access

Characteristics of Nano Materials along with Quantum Method

Claudio Cameselle^{* *}Correspondence: Claudio Cameselle, Department of Chemical Engineering, University of Valencia, Valencia, Spain, Email:

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Description

Nanomaterials are materials that have at least one dimension on the nanoscale, which is typically defined as being between 1 and 100 nanometers. These materials exhibit unique properties that are not seen in their bulk counterparts, and they have the potential to revolutionize a wide range of fields, including electronics, energy, medicine, and more. The properties of nanomaterials are largely due to their high surface area-to-volume ratio. As the size of a material decreases, its surface area increases relative to its volume [1]. This means that a nanomaterial will have a much larger surface area per unit of mass than a bulk material, which can lead to changes in its chemical and physical properties [2].

One of the most important mechanisms that drive the properties of nanomaterials is quantum confinement. Quantum confinement occurs when the size of a material is reduced to the point where the behavior of electrons is restricted to discrete energy levels [3]. This can lead to changes in the material's optical, electrical, and magnetic properties. For example, gold nanoparticles exhibit different colors depending on their size due to changes in their surface plasmon resonance [4]. When the size of the gold nanoparticles is decreased, the energy required to excite the electrons on their surface increases, leading to a shift in the absorption spectrum towards shorter wavelengths.

Another important mechanism that contributes to the properties of nanomaterials is surface effects. As the size of a material decreases, the proportion of atoms on its surface increases, and the interactions between these surface atoms can have a significant impact on the material's properties. For example, silver nanoparticles are known for their antimicrobial properties, which are thought to be due to the release of silver ions from the surface of the particles. The high surface area of the nanoparticles allows for a large number of silver ions to be released, leading to their potent antimicrobial activity [5].

Nanomaterials can be synthesized using a variety of methods, including top-down and bottom-up approaches. Top-down approaches involve the mechanical or chemical reduction of a bulk material to nanoscale dimensions, while bottom-up approaches involve the assembly of individual atoms or molecules into larger structures [6].

One of the most widely used bottom-up approaches for the synthesis of nanomaterials is the sol-gel method. This method involves the hydrolysis and condensation of metal alkoxides to form a sol, which can then be converted into a gel by the addition of a cross-linking agent. The resulting gel can be dried and calcined to produce a nanoscale metal oxide powder. Another popular method for the synthesis of nanomaterials is the chemical reduction of metal salts. This method involves the reduction of a metal salt with a reducing agent, such as sodium borohydride or hydrazine, to produce nanoscale metal particles.

Conclusion

Nanomaterials have a wide range of potential applications, and their unique properties make them highly desirable for use in a variety of fields. In electronics, for example, nanomaterials can be used to create faster, more efficient transistors and memory devices. In energy, nanomaterials can be used to improve the efficiency of solar cells and batteries. In medicine, nanomaterial’s can be used for drug delivery and imaging applications. These are also concerns about the potential environmental and health impacts of nanomaterials. Because of their small size and high surface area, nanomaterials may have different toxicity profiles than their bulk counterparts, and they may be able to penetrate biological barriers more easily. Researchers are working to understand these potential risks and develop strategies to mitigate them. Nanomaterials are materials with at least one dimension on the nanoscale that exhibit unique properties due to their high surface area-to-volume ratio.

References

1. El-Belely EF, Farag MM, Said HA, Amin AS, Azab E, Gobouri AA, et al. Green synthesis of zinc oxide nanoparticles (ZnO-NPs) using Arthrospira platensis (Class: Cyanophyceae) and evaluation of their biomedical activities. Nanomater. 2021;11(1): 95.

   [Google Scholar] [Crossref]

2. Imran SM, Shao GN, Haider MS, Hwang HJ, Choa YH, Hussain M, et al. Carbon nanotube‐based thermoplastic polyurethane‐poly (methyl methacrylate) nanocomposites for pressure sensing applications. Polym Eng Sci. 2016;56(9): 1031-6.

   [Google Scholar] [Crossref]

3. Das R, Ali ME, Abd Hamid SB, Ramakrishna S, Chowdhury ZZ. Carbon nanotube membranes for water purification: A bright future in water desalination. Desalination. 2014;336: 97-109.

   [Google Scholar] [Crossref]

4. Baskar G, Gurugulladevi A, Nishanthini T, Aiswarya R, Tamilarasan KJ. Optimization and kinetics of biodiesel production from Mahua oil using manganese doped zinc oxide nanocatalyst. Renew Energy. 2017;103: 641-6.

   [Google Scholar] [Crossref]

5. Choudhary S, Sachdeva A, Kumar P. Time-based assessment of thermal performance of flat plate solar collector using magnesium oxide nanofluid. Int J Sustain Energy. 2021;40(5):460-76.

   [Google Scholar] [Crossref]

6. Xu Z, Li Z. Dynamic humidity response of surface acoustic wave sensors based on zinc oxide nanoparticles sensitive film. Appl Phys A. 2021;127(6): 422.

   [Google Scholar] [Crossref]