Novel approach for synthesizing different shapes of carbon nanotubes from rice straw residue

Lotfy, Vivian F.; Fathy, Nady A.; Basta, Altaf H.

doi:10.1016/j.jece.2018.09.055

Cited by 55 publications

(37 citation statements)

References 44 publications

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“…On the other hand, TGA thermo-grams illustrate the appearance of weight increase in a narrow temperature range of 455-465ºK, traducing an oxidation reaction. This behavior is not the case of samples (8) and (CC) due to the already access oxygen contents in the sample. It may be also due to the Archimedes effects, when the density of material is slightly decreased by increasing temperature.…”

Section: Resultsmentioning

confidence: 82%

“…6. Relationship Weight loss-DTA Peak intensity for ACs (1), (2), (5), (7), (8), and CC. a) in the temperature range T<373 K and b) in the temperature range >455 K.…”

Section: Resultsmentioning

confidence: 99%

“…As discussed before in DTA and TGA analysis, the particularity of the sample (1) that appears in the form of irregular shaped aggregated particles lets us conclude that a mixture of aliphatic and graphitic structures is most probable. Samples (2), (7) and (8), however, are constituted by a porous structure having cracks and crevices with nearly regular tubular structures with the diameter varying from 2 to 3 nm.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, its exploitation in the industrial sector will certainly contribute to improving the ecological environment as well as participating in technological development [7]. In this context, one of the most promising methods is its transformation to carbon materials [8,9]. The activated carbons (ACs) produced from agricultural residue can be used as adsorbents/bioadsorbants in adsorption and photocatalytic degradation to reduce the environmental pollution in aqueous and gaseous solutions [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…It has been demonstrated that some parameters included in the preparation process (activation and carbonization processes, activation agent, temperature, time of activation, and the sample post treatment) can affect AC properties such as textural and chemical characteristics. Different activation agents are used to prepare ACs from rice straw such as HNO 3 , H 2 O 2 , KMnO 4 , ZnCl 2 and H 3 PO 4 in order to improve surface area, which represents the major parameter, typically ranging from 63 to 771 m 2 /g [7][8][9][10][11][18][19][20]. Whereas the integration of ACs on some technology sectors is relatively developed, principally on pollutant adsorption, their use in the electronic field is still limited.…”

Section: Introductionmentioning

confidence: 99%

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Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

daiem¹,

Alotaibi²,

Alosime³

et al. 2020

Pol. J. Environ. Stud.

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Activated carbons have been prepared from rice straw by considering the material forms of rice straw, the chemical activation agent and the preparation method. The study seeks optimal conditions for giving better mico-and nano-properties, and to support the corresponding molecular structure. All the obtained results are referred to those of a commercial sample. Fourier transform infrared absorption, X-ray photoelectron spectroscopy, and dispersive X-ray spectroscopy are combined to determine functional groups. Moreover, a quantum chemical calculation has been done using density functional theory to argue the proposed molecular structure. Principally, the vibrational properties are compared to experimental results, and the corresponding electronic structure is calculated. Thermal stability and eventual reactions are evidenced by both differential and gravimetric thermal analysis. The surface topography of the resulting activated carbon is checked by scanning electron microscope and correlated with their chemical and textual characteristics carried out from Brunauer, Emmett and Teller analysis. Results illustrate that the resulting product is a mixture of carbon graphic structure and acidic/basic entities and exhibit a global acidic pH. The use of KOH as oxidant agent and the ground raw material form leads to obtain good properties such as higher surface area and higher porosity. Based on the size compatibility making it possible to introduce low-radius single-walled carbon nanotubes, the electronic structures of the prepared activated carbon and that of chiral (5,5) SWCNTs and their corresponding *

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Section: Resultsmentioning

confidence: 82%

“…6. Relationship Weight loss-DTA Peak intensity for ACs (1), (2), (5), (7), (8), and CC. a) in the temperature range T<373 K and b) in the temperature range >455 K.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

daiem¹,

Alotaibi²,

Alosime³

et al. 2020

Pol. J. Environ. Stud.

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show abstract

Effective treatment for environmental enhancing the performance of undesirable agro‐waste in production of carbon nanostructures as adsorbent

Basta

Lotfy

Fathy

2020

J of Applied Polymer Sci

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The work in this article deals with enhancing the performance of rice straw (RS) for production of carbon nanostructures (CNSs), as aqueous phase adsorbents, as well as benefit solution for disposing of this undesirable waste and for avoiding the environmental risk from burning. In this respect, controlling the constituents of RS by enzymatic treatment, followed by hydrothermal treatment and carbonization was carried out. The benefit role of the performed treatments was supported via comparing these CNSs with those obtained from RS pretreated by chemical pulping processes; moreover, literature reported CNSs. Results deduced from SEM and TEM analyses showing that, the two investigated CNSs samples have different surface morphologies and comprised of graphitic carbons as nodules and multi‐layer graphene sheets. The investigated RS‐based CNSs own numerous of oxygen‐containing functional groups with low specific surface area and high mesopore volume; thus, they exhibited high iodine number of 959 and 863 mg/g, respectively. The CNSs from hydrochar of peroxidase treated RS has higher uptake to methylene blue (MB) dye (358 mg/g) than that produced from hydrochar of cellulase treated RS (202 mg/g), this may be related to its unique nanostructure. Both values are higher than that of reported CNSs, which obtained from chemical pulping processes (~ 54–119 mg/g). The adsorption of MB dye is well‐fitted with Langmuir and described by pseudo‐second order kinetic model.

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Synthesis and evaluating of carbon nanoallotrope‐biomacromolecule gel composites as drug delivery systems

Basta

Lotfy

2021

J of Applied Polymer Sci

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This work was done to assess the role of precursors (agro and graphite) on performance of carbon nanoallotropes-biomacromolecules composite as drug delivery for controlling the release of niacin. In this respect graphene oxide and bagasse-based carbon oxide were synthesized and chelated with chitosan (Cs-GO and Cs-Co). These gel composites were characterized by many techniques [morphology, differential scanning calorimetry, Fourier-transform infrared spectroscopy, swelling, encapsulation efficiency (EE) and loading (L) % of niacin. Another series of experiments was carried out for studying the role of replacing part of carbon nanoallotrope by carboxymethyl cellulose (CMC) on performance of produced drug carries, these systems were coded as Cs-GO-CMC and Cs-Co-CMC. The data showed that, the Cs-GO gel composite provided maximum release of NA, at 5 h, for pH's simulated gastric and intestinal fluids; pH. 2.1 and pH 7.4 (1120 mg/L and 757 mg/L). The incorporation of CMC is not acceptable as it provided low drug release together with burst release of NA-drug, and consequently possible caused tissue irritation or toxicity in the human body. The Cs-GO and Cs-CO systems with relatively low drug loading were recommended for their better controllability system to NA release, which prolonging benefit of human with niacin. The NA release from all investigated gels followed Fickian and non-Fickian diffusion mechanisms.

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Novel approach for synthesizing different shapes of carbon nanotubes from rice straw residue

Cited by 55 publications

References 44 publications

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Effective treatment for environmental enhancing the performance of undesirable agro‐waste in production of carbon nanostructures as adsorbent

Synthesis and evaluating of carbon nanoallotrope‐biomacromolecule gel composites as drug delivery systems

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