A Review of Nano-catalyst Applications in Kerosene Desulfurization Techniques

Zaid, Sahar Abd; AbdulRazak, Adnan A.; Abid, Mohammad

doi:10.53293/jasn.2022.4302.1094

Cited by 3 publications

(1 citation statement)

References 69 publications

(78 reference statements)

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“…CuO NPs can cause oxidative stress, heterogeneous changes, and abnormalities in cellular uptake, electrolyte imbalances, and protein deactivation when they interact with DNA, lysosomes, ribosomes, and enzymes. NPs can also cause gene expression and enzyme inactivation [37,38]. Metallic nanoparticles (MNs) and their accompanying ions produce superoxide radicals (ROS), which cause oxidative stress in cells.…”

Section: Antibacterial Assaymentioning

confidence: 99%

The Antibacterial Activities of Copper Oxide Nanoparticles Synthesized Using Laser Ablation in Different Surfactants against Streptococcus mutans

Abbas¹,

Kadhim²,

Haleem³

2023

Journal of Renewable Materials

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Copper oxide nanoparticles (CuO NPs) were synthesised with laser ablation of a copper sheet immersed in deionized water (DW), cetrimonium bromide (CTAB), and sodium dodecyl sulphate (SDS), respectively. The target was irradiated with a pulsed Nd: YAG laser at 1064 nm, 600 mJ, a pulse duration of 10 ns, and a repetition rate of 5 Hz. The CuO NPs colloidal were analyzed using UV-Vis spectroscopy, the Fourier transform infrared (FTIR) spectrometer, zeta potential (ZP), X-ray diffraction (XRD), transmission electron microscope (TEM) and field emission scanning electron microscopy (FESEM). The absorption spectra of CuO NPs colloidal showed peaks at 214, 215 and 220 nm and low-intensity peaks at 645, 650 and 680 nm for SDS, CTAB and DW, respectively. CuO NPs' colloidal results are (−21.6, 1.2, and 80 mV) for negatively, neutrally, and positively charged SDS, DW, and CTAB, respectively. The XRD pattern of the NPs revealed the presence of CuO phase planes (110) ( 111), (20-2) and (11-1). The TEM images revealed nearly spherical NPs, with sizes ranging from 10-90, 10-50, and 10-210 nm for CuO NPs mixed with DW, SDS and CTAB, respectively. FESEM images of all the synthesized samples illustrate the formation of spherical nanostructure and large particles are observable. The CuO NPs were tested for antibacterial activity against Streptococcus mutans by using the well diffusion method. In this method, CuO NPs prepared in DW at a concentration of 200 μg/mL showed a greater inhibition zone against Streptococcus mutans.

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Section: Antibacterial Assaymentioning

confidence: 99%

The Antibacterial Activities of Copper Oxide Nanoparticles Synthesized Using Laser Ablation in Different Surfactants against Streptococcus mutans

Abbas¹,

Kadhim²,

Haleem³

2023

Journal of Renewable Materials

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Optimum Dimensions for Au Nanoframe Tuning in the Near-Infrared Second Window Range for Biomedical Applications: A Numerical Study

Alali,

Alhindi

2024

Plasmonics

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Au nanoparticles are favored in biomedical applications owing to their low cost and negligible cytotoxicity to biological cells. Nanoframes outshine their solid counterparts because of their porosity, which produces pronounced redshifts in their local surface plasmon resonance (LSPR). This feature enables the utilization of nanoframes in photothermal-based therapy, where LSPR excitation of particles within the near-infrared range (NIR) is essential. LSPR redshift in nanoframes is highly sensitive to their dimensions. A slight difference in the nanoframe dimension can result in substantial redshift, potentially pushing its LSPR beyond or below the required NIR range. We perform a systematic numerical study to investigate the optimum dimensions within a range of 1–100 nm for a spherical frame (SpF) and standard cubic frame (CF) to precisely tune their LSPR within the NIR-II window (1000–1400 nm). Our findings indicate that SpF exhibits a shorter LSPR redshift than CF’s at a certain porosity limit that is related to the geometry of the frame. Moreover, SpF displays higher LSPR sensitivity in the NIR region compared to CF. These insights provide valuable guidance for nanoframe design tailored for photothermal-based biomedical applications.

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Production of Green Fuel Using a New Synthetic Magnetite Mesoporous Nano-Silica Composite Catalyst for Oxidative Desulfurization: Experiments and Process Modeling

Jarullah,

Hussein,

Al-Tabbakh

et al. 2024

Catalysts

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Producing an eco-friendly fuel with the least amount of sulfur compounds has been an ongoing issue for petroleum refineries. In this study, bentonite (which is a cheap material and is locally available in abundance) is employed to prepare a nano-silica catalyst with a high surface area to be used for the oxidative desulfurization of kerosene. Two composite catalysts of Fe/silica were supported on CAT-1 (0% HY-zeolite and 100% nano-silica) and CAT-2 (20% HY-zeolite and 80% nano-silica). The activity of the catalysts was evaluated in a batch ODS (oxidative desulfurization) process at temperatures of 30, 60, 90, and 120 °C, a pressure of 1 atm, and a reaction time of 30, 60, 90, and 120 min using 120 L/h of air as the oxidant. The results revealed that the highest total sulfur removal efficiency was 50% and 87.88% for 100% nano-silica (CAT-1) and 80% nano-silica (CAT-2), respectively. The experimental data were then used to construct and validate an accurate mathematical model of the process. The operational parameters for eliminating more than 99% of sulfur and producing eco-friendly fuel were then achieved by using the model. The testing methods for these characterizing materials included X-ray diffraction (XRD), thermal gravimetric examination (TGA), X-ray fluorescence (XRF), and surface area (BET). The outcomes indicated that the addition of HY-zeolite increased the activity of the catalyst (CAT-2 > CAT-1).

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A Review of Nano-catalyst Applications in Kerosene Desulfurization Techniques

Cited by 3 publications

References 69 publications

The Antibacterial Activities of Copper Oxide Nanoparticles Synthesized Using Laser Ablation in Different Surfactants against Streptococcus mutans

The Antibacterial Activities of Copper Oxide Nanoparticles Synthesized Using Laser Ablation in Different Surfactants against Streptococcus mutans

Optimum Dimensions for Au Nanoframe Tuning in the Near-Infrared Second Window Range for Biomedical Applications: A Numerical Study

Production of Green Fuel Using a New Synthetic Magnetite Mesoporous Nano-Silica Composite Catalyst for Oxidative Desulfurization: Experiments and Process Modeling

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