Preparation and Characterization of Nano silica Prepared by Different Precipitation Methods

Al-Abboodi, Sabah M. Thahab; Al-Shaibani, Eman Jabber Abed; Alrubai, Enass. A.

doi:10.1088/1757-899x/978/1/012031

Cited by 21 publications

(11 citation statements)

References 16 publications

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“…The finding reveals the chemical compositions of nanosilica product. The spectrum shows a broad and more intensive band at 1087.85 cm -¹ , which is typical of the Si-O-Si asymmetric stretching vibration, in agreement with[12][23][25][26][27]. This band is less intense, but on the other side of the package, for the range 470.63 cm -¹ -802.39cm -¹ , which is due to symmetric stretching vibrations (Si-O-Si), these are the distinctive solid lines of silica, and these are in agreement with[13][20][21][25] .…”

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confidence: 83%

“…Nanosilica also gained popularity due to its highly reactive surface area [11], physical and chemical stability, and low toxicity [12]. In addition, silica nanoparticles (SNPs) have a large surface area and a small diameter, making them suitable for a wide range of applications, such as electronics and photonics, and energy harvesting and storage.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of High Surface Area Nanosilica from Iraqi Sand via Sol-Gel Technique

Mahmood¹,

Hussein

Abdulwahhab³

2022

Journal of Petroleum Research and Studies

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The present study revealed a low-cost process for utilizing desert sand for preparing nanosilica by sol-gel technique. This work required sodium hydroxide, concentrated hydrochloric acid, distillate water as raw materials, and Iraqi sand. Nanosilica sample was characterized by X-Ray Diffraction (XRD), scanning electron microscopy analysis (SEM), atomic force microscope(AFM), surface area (BET) method, and fourier transform infrared (FTIR). The XRD result of produced sample is referred to as amorphous silica, and it has a broad peak at 2Θ= 22° – 22.5 º. SEM showed spherical, agglomerated silica particles with a diameter range of 26.57–28.93 nm. In addition, the average particle size was 76.35nm, with a dimension range of 40-110 nm, and the surface area was 510.96 m²/g. The inclusion of hydrogen-bonded silanol groups (Si–O–H) at 3437.15 cm-¹ and siloxane groups (Si–O–Si) at 1087.85 cm-¹in the FTIR spectra.

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confidence: 83%

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of High Surface Area Nanosilica from Iraqi Sand via Sol-Gel Technique

Mahmood¹,

Hussein

Abdulwahhab³

2022

Journal of Petroleum Research and Studies

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“…Out of the above-mentioned fabrication methods, the sol-gel process is a superior method that can be followed for preparing superior-quality, narrow-size-distributed, spherical nanoparticles. In addition, nano-SiO2 can be prepared by grinding rice husk ash finely to develop nanomaterials [75]. Carbon nanotubes (CNTs) are also commonly used for concrete application, and the tensile strength of CNT is almost 100 times higher than that of steel with a similar diameter.…”

Section: Nanomaterials and Their Preparationmentioning

confidence: 99%

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

2021

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At present, nanotechnology is a significant research area in different countries, owing to its immense ability along with its economic impact. Nanotechnology is the scientific study, development, manufacturing, and processing of structures and materials on a nanoscale level. It has tremendous application in different industries such as construction. This study discusses the various progressive uses of nanomaterials in concrete, as well as their related health risks and environmental impacts. Nanomaterials such as nanosilica, nano-TiO2, carbon nanotubes (CNTs), ferric oxides, polycarboxylates, and nanocellulose have the capability to increase the durability of buildings by improving their mechanical and thermal properties. This could cause an indirect reduction in energy usage and total expenses in the concrete industry. However, due to the uncertainties and irregularities in size, shape, and chemical compositions, some nanosized materials might have harmful effects on the environment and human health. Acknowledgement of the possible beneficial impacts and inadvertent dangers of these nanosized materials to the environment will be extremely important when pursuing progress in the upcoming years. This research paper is expected to bring proper attention to the probable effects of construction waste, together with the importance of proper regulations, on the final disposal of the construction waste.

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“…Based on several previous studies, the synthesis of nano silica has been widely studied using raw materials or precursor solutions, such as TEOS (tetraethyl orthosilicate), rice husks, and silica sand [13]- [15]. Raw materials that can be employed to synthesize nano silica must contain high silica.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characteristic of Nanosilica From Geothermal Sludge: Effect of Surfactant

Adiatama

Susanti

Astuti³

et al. 2022

metal.

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In the synthesis of nanoparticles, the phenomenon of agglomeration is an undesirable condition because the particles formed can be larger. The use of surfactants can prevent the occurrence of this phenomenon. In this study, the use of surfactants was studied in the synthesis of nanosilica from geothermal sludge. The method applied in the synthesis of nanosilica is the sol-gel method. A 1 M sodium hydroxide (NaOH) solution was used to prepare the sol phase, while the gel phase was prepared at pH 5 using a 1.5 M hydrochloric acid (HCl) solution. The surfactants used were alkyl benzene sulfonate (ABS), cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS), and polyvinylpyrrolidone (PVP). The surfactant added to the precursor solution was at the critical micelle concentration (CMC), where the CMC values for each surfactant were 0.15, 0.05, 0.50, and 1.00 wt% for ABS, CTAB, SDS, and PVP, respectively. The experimental results showed that the synthesis of nanosilica without surfactant could produce the product with a purity of 98.03%. Even though the purity is already high, the resulting product experiences agglomeration and surfactants were needed to minimize the occurrence of agglomeration in the product. The surfactant that gives the best product quality is PVP, where the particle size is in the range of 2.01–3.65 nm. However, the product produced with this PVP has a low purity, 56.67%. It is because the sodium chloride (NaCl) is trapped in the surfactant template.

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Preparation and Characterization of Nano silica Prepared by Different Precipitation Methods

Cited by 21 publications

References 16 publications

Preparation and Characterization of High Surface Area Nanosilica from Iraqi Sand via Sol-Gel Technique

Preparation and Characterization of High Surface Area Nanosilica from Iraqi Sand via Sol-Gel Technique

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

Synthesis and Characteristic of Nanosilica From Geothermal Sludge: Effect of Surfactant

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