New coating synthesis comprising CuO:NiO/C to obtain highly selective surface for enhancing solar energy absorption

Abed, Rasheed N.; Abdallh, Mustafa; Rashad, Alaa A.; Hadawey, Abas; Yousif, Emad

doi:10.1007/s00289-020-03115-5

Cited by 25 publications

(1 citation statement)

References 47 publications

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“…The coverage rate of the nanoparticles on surface changed as Al doping ratio rise, which change the mobility and resistivity value of CuO thin film. Abed et al (2021) showed the same morphological properties and they analyzed the surface properties of thin films of carbon doped CuO:NiO to modify the physical properties of carbon.…”

Section: Morphological Propertiesmentioning

confidence: 99%

Green Synthesis of Nanoparticles and Their Applications

Karataş¹,

Çimer²

2023

Versatile Approaches to Engineering and Applied Sciences: Materials and Methods

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Nanotechnology, which involves the synthesis, design and application of materials or devices with sizes in the 1-100 nm range, has been an important topic in various basic and applied sciences such as medicine, pharmacy, dentistry, chemistry, biology, environment and materials science. Nanotechnology, which has ease of application, is a new emerging technology. The rapid increase in nanotechnological research around the world in recent years has allowed the development of nanoscale devices and new materials. Nanotechnology has opened up new dimensions in the field of biotechnology and nanomedicine, among various other important applications such as drug delivery, electronics, cosmetics, personal care products and biosensors. Nanoparticles (NPs), which form the basis of nanotechnology, have remarkable properties such as specific sizes, surface structures, chemical compositions, large surface area volume ratios, electronic structure, and interfacial reactivity. As the sizes and shapes of NPs change, the physical, chemical, optical, electrical, thermal, catalytic, bioactivity and toxicity properties of the particles also change. NPs of various shapes and sizes are synthesized by three different methods as physical, chemical and biological. Synthesis of NPs by conventional methods such as physical and chemical methods causes high energy consumption, low efficiency, high cost and formation of toxic products. Green synthesis, which has been widely used recently, is a more cost-effective, easy to synthesize and environmentally friendly method using biological agents. Different natural and harmless biomaterials such as plants, plant extracts, fungi, algae, yeasts, bacteria, virus DNA are used for the biological synthesis of different NPs. With this method, the effect of chemicals is greatly reduced and their damage is eliminated as much as possible. In addition, it does not require high pressure and high temperature values. Many metals and metal oxide nanoparticles such as gold, zinc, silver, palladium, manganese, iron oxide, titanium dioxide, copper oxide and lead oxide are synthesized in a single step with the green synthesis method. The fact that the green synthesis method has many advantages compared to other processes and the continuous development of nanotechnology allows the green synthesis method to develop and be used more widely. The aim of this study is to reveal the importance of green synthesis, the biomaterials used in green synthesis, the properties and usage areas of synthesized NPs.

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Section: Morphological Propertiesmentioning

confidence: 99%

Green Synthesis of Nanoparticles and Their Applications

Karataş¹,

Çimer²

2023

Versatile Approaches to Engineering and Applied Sciences: Materials and Methods

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Synthesis, Structural, and Optical Properties of Modified Poly(vinyl Chloride) Thin Films by Ethylenediamine Loaded with Metal Oxide Nanoparticles

Abed,

Rashad,

Hayawi Rahman

et al. 2024

ChemistrySelect

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Poly (vinyl chloride) (PVC) films modified with ethylenediamine (en) and doped by nanoparticles (TiO2, ZnO, NiO, and MgO). A mixture of 0.5 g PVC/en dissolved in THF and 0.01 wt % of nanoparticles were used in doping PVC to produce the nanocomposite films. All modified PVC films were characterized by different analysis techniques such as Fourier Transform Infrared (FTIR), Nuclear Magnetic Resonance Spectrometer (NMR), diffusive reflectance spectroscopy (DRS), X‐ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The DRS was used to analyse the scattered IR energy of the samples at wavelengths between (250–1350 nm). The optical properties and oscillator strength were also studied, the transmittance and reflectance values declined for the PVC films, and the absorption coefficient was observed between (79–89 %). The direct energy gap decreased from 4.6 to 1.9, and the indirect energy gap reduced from 4.3 to 1.9. The XRD exhibited a semi‐crystalline structure and the SEM test exhibited a porous structure of all samples. The Urbach energy was increased from 0.8772 eV to 14.712 eV, single oscillator energy ( ) was also increased from 6.38 eV to 13.69 eV and the dispersion energy increased from 23.40 eV to 70.63 eV. Moreover, the surface roughness parameters Ra and Rq of the PVC films in modified and doping were increased from 3.86 nm to 8.14 nm, and 5.08 nm to 10.10 nm respectively. So, PVC results show increased optical properties after modification with en and doping by NPs are used in the light conversion and aerospace industries.

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