Performance of graphene Oxide/SiO2 Nanocomposite-based: Antibacterial Activity, dye and heavy metal removal

Dan, Sasan; Bagheri, Hamidreza; Shahidizadeh, Alireza; Hashemipour, Hassan

doi:10.1016/j.arabjc.2022.104450

Cited by 30 publications

(6 citation statements)

References 36 publications

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“…Panels a, c, and e of Figure show XRD patterns of silica nanoparticles. The broad peak at about 22° denotes amorphous silica, ,, which is observable for all three silica nanoparticles. Peak broadening in approximately 50, 60, and 80° of 1F and 2F nanoparticles’ XRD patterns can be attributed to impurities and carbonic phases, which may be brought about by a surface modifier. − …”

Section: Resultsmentioning

confidence: 91%

Reinforcing Performance of Silane-Modified Recycled Nanosilica within Sustainable, Non-black-filled Styrene–Butadiene Rubber Nanocomposites

Shahidizadeh,

Pircheraghi,

Shojaei

2024

ACS Sustainable Resour. Manage.

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Upcycling is a pioneering step towards a lesspolluted planet. Accordingly, a recycled nanosilica (GNSi) was exploited to replace health-hazardous carbon black (CB)�a primary component of tires worldwide�and fabricate green styrene−butadiene rubber (SBR) nanocomposites to employ in the tire manufacturing industry with comparable or even better technical properties to that of CB-containing ones. Two fresh, commercially available nanosilica, 1F and 2F, were also used for comparison. To study the silica characteristics and the behavior they brought about inside SBR matrixes, field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer−Emmett−Teller, Fourier transform infrared spectroscopy, mechanical and rheological vulcanization testing, and dynamic mechanical thermal analysis methods were applied. The findings revealed that there was almost no noticeable performance gap between the nanocomposite loaded with 20 parts per hundred rubbers (phr) of CB and the one with the exact content of GNSi modified with bis(triethoxysilylpropyl)tetrasulfide. Utilizing GNSi, not only does the vehicle consume less fossil fuel but it also eliminates a solid waste disposal source that poses a risk to the environment. The observed enhancements, such as modulus by 15% and tear strength by 30% in the nanocomposite with 20 phr of GNSi than the one with the same concentration of 1F, indicate GNSi a more successful rubber strengthening nanomaterial than 1F. Incorporating GNSi also enhanced the technical properties more noticeably than 2F. Therefore, GNSi is offered as an appropriate, feasible additive for SBR, contributing to the development of green tires.

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Section: Resultsmentioning

confidence: 91%

Reinforcing Performance of Silane-Modified Recycled Nanosilica within Sustainable, Non-black-filled Styrene–Butadiene Rubber Nanocomposites

Shahidizadeh,

Pircheraghi,

Shojaei

2024

ACS Sustainable Resour. Manage.

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“…As the pH of the dye solution increases, the adsorption of cationic MB dye molecules on the GO surface is enhanced. However, Figure 6 also shows a decrease in adsorption capacity starting at pH > 10, which could be due to the hydrolysis of GO [ 83 ]. According to the literature, GO is stable at pH values between 4 and 10 [ 84 ].…”

Section: Resultsmentioning

confidence: 99%

Theoretical and Experimental Analysis of Hydroxyl and Epoxy Group Effects on Graphene Oxide Properties

Jaramillo-Fierro,

Cuenca

2024

Nanomaterials

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In this study, we analyzed the impact of hydroxyl and epoxy groups on the properties of graphene oxide (GO) for the adsorption of methylene blue (MB) dye from water, addressing the urgent need for effective water purification methods due to industrial pollution. Employing a dual approach, we integrated experimental techniques with theoretical modeling via density functional theory (DFT) to examine the atomic structure of GO and its adsorption capabilities. The methodology encompasses a series of experiments to evaluate the performance of GO in MB dye adsorption under different conditions, including differences in pH, dye concentration, reaction temperature, and contact time, providing a comprehensive view of its effectiveness. Theoretical DFT calculations provide insights into how hydroxyl and epoxy modifications alter the electronic properties of GO, improving adsorption efficiency. The results demonstrate a significant improvement in the dye adsorption capacity of GO, attributed to the interaction between the functional groups and MB molecules. This study not only confirms the potential of GO as a superior adsorbent for water treatment, but also contributes to the optimization of GO-based materials for environmental remediation, highlighting the synergy between experimental observations and theoretical predictions in advances in materials science to improve sustainability.

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“…Through the synthesis of new active compounds, we aim to con ict the growth of antibiotic-resistant microbes and continue to treat bacterial infections effectively. Also, the development of active compounds with antibacterial properties can further enhance the effectiveness of microorganism removal from wastewater which can lead to the development of innovative and sustainable approaches for wastewater treatment reducing the use of harmful chemicals and promoting environmentally friendly practices [29,45].…”

Section: The Effect Of Phmentioning

confidence: 99%

Adsorption behavior and antimicrobial activity of new chitosan based functionalized nanocomposites: A case study

Hamad,

Salem,

Abdel-Rahman

et al. 2024

Preprint

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Two new functionalized sorbents EPC@MC and ENC@MC were synthesized by the grafting of two amino ester derivatives EPC and ENC on magnetic chitosan nanoparticles respectively. The prepared sorbents were characterized using FTIR spectroscopy, SEM, and SEM-EDX facilities, TEM, SEAD pattern, and TGA analysis. The sorption process was investigated for three fresh contaminated water samples; sewage wastewater, iron and steel wastewater, and tannery wastewater respectively. The obtained data illustrated that EPC@MC and ENC@MC are highly selective for some heavy metals removal from the different samples of industrial wastewater. The sorption process was performed under different pH values. To complete our case study, the antimicrobial properties of the functionalized sorbents as well as that of the corresponding amino esters were characterized by determining the inhibition zone values against Gram-positive bacteria (Staphylococcus aureus), Gram-negative bacteria (Escherichia coli), as well as a yeast species (Candida albicans) and fungi including one filamentous fungus (Aspergillus fumigatus) and by using a well-modified diffusion method.

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Performance of graphene Oxide/SiO2 Nanocomposite-based: Antibacterial Activity, dye and heavy metal removal

Cited by 30 publications

References 36 publications

Reinforcing Performance of Silane-Modified Recycled Nanosilica within Sustainable, Non-black-filled Styrene–Butadiene Rubber Nanocomposites

Reinforcing Performance of Silane-Modified Recycled Nanosilica within Sustainable, Non-black-filled Styrene–Butadiene Rubber Nanocomposites

Theoretical and Experimental Analysis of Hydroxyl and Epoxy Group Effects on Graphene Oxide Properties

Adsorption behavior and antimicrobial activity of new chitosan based functionalized nanocomposites: A case study

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