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Dr. Emad S. Goda
Department of Chemistry, Hannam University, Daejeon 305-811, Korea

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0 Electrolytes
0 Electrospinning
0 Sensors
0 Water Treatment
0 Hydrogels

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Journal article
Published: 26 May 2021 in Journal of Energy Chemistry
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An eco-friendly, new, and controllable approach for the preparation of manganese oxide (α-MnO2) nanorods has been introduced using hydrothermal reaction for supercapacitor application. The in-depth crystal structure analysis of α-MnO2 is analyzed by X-ray Rietveld refinement by using FullProf program with the help of pseudo-Voigt profile function. The developed α-MnO2 electrode attains a remarkable capacitance of 577.7 F/g recorded at a current density value of 1 A/g with an excellent cycle life when is used for 10,000 repeated cycles due to the porous nanorod-morphology assisting the ease penetration of electrolyte ions into the electroactive sites. The diffusive and capacitive contributions of the electrode have been estimated by considering standard numerical packages in Python. After successfully assembling the aqueous symmetric supercapacitor (SSC) cell by utilizing the as-prepared α-MnO2, an excellent capacitance of 163.5 F/g and energy density of 58.1 Wh/kg at the constant current density of 0.5 A/g are obtained with an expanded potential frame of 1.6 V. Moreover, the cell has exceptionally withstood up to 10,000 cycles with an ultimate capacitance retention of 94.1% including the ability to light an LED for 18 s. Such findings recommend the developed α-MnO2 electrode to be a highly felicitous electrode for the field of energy storage.

ACS Style

Bidhan Pandit; Emad.S. Goda; Mahmoud H. Abu Elella; Aafaq Ur Rehman; Sang Eun Hong; Sachin R. Rondiya; Pranay Barkataki; ShoyebMohamad F. Shaikh; Abdullah M. Al-Enizi; Salah M. El-Bahy; Kuk Ro Yoon. One-pot hydrothermal preparation of hierarchical manganese oxide nanorods for high-performance symmetric supercapacitors. Journal of Energy Chemistry 2021, 65, 116 -126.

AMA Style

Bidhan Pandit, Emad.S. Goda, Mahmoud H. Abu Elella, Aafaq Ur Rehman, Sang Eun Hong, Sachin R. Rondiya, Pranay Barkataki, ShoyebMohamad F. Shaikh, Abdullah M. Al-Enizi, Salah M. El-Bahy, Kuk Ro Yoon. One-pot hydrothermal preparation of hierarchical manganese oxide nanorods for high-performance symmetric supercapacitors. Journal of Energy Chemistry. 2021; 65 ():116-126.

Chicago/Turabian Style

Bidhan Pandit; Emad.S. Goda; Mahmoud H. Abu Elella; Aafaq Ur Rehman; Sang Eun Hong; Sachin R. Rondiya; Pranay Barkataki; ShoyebMohamad F. Shaikh; Abdullah M. Al-Enizi; Salah M. El-Bahy; Kuk Ro Yoon. 2021. "One-pot hydrothermal preparation of hierarchical manganese oxide nanorods for high-performance symmetric supercapacitors." Journal of Energy Chemistry 65, no. : 116-126.

Journal article
Published: 07 April 2021 in International Journal of Biological Macromolecules
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A green and scalable approach for the preparation of few-layered graphene utilizing the biowaste of potato peels has been developed. The potato peels have been dried and carbonized to obtain a new graphite structure that has been exfoliated in N-methylene phosphonic acid chitosan (MPC). The exfoliation process assisted the formation of graphene sheets with a high size diameter and quality of 50% based on the weight of graphite structure. The graphene sheets were green decorated with silver nanoparticles using microwave power to obtain new nanocomposites. The mass ratio between the graphite and silver nitrate was optimized and observed to change the morphology and size diameter of silver nanoparticles. The as-prepared MPC structure, graphene, and silver decorated graphene nanocomposites were characterized using 1HNMR, FTIR, XRD, UV/Vis spectrophotometer, SEM, and TEM besides tested as antimicrobial agents. The bacterial performance was also controlled by changing the number of AgNPs distributed on graphene sheets based on the mass ratios of graphite/AgNO3. The inhibition diameter of silver decorated graphene was considerably increased to 24.8, and 20.1 mm as in the case of MPC-GRP-Ag30 composite compared to the pure graphene (11.2, 13.5 mm) for E. coli and S. aureus, consecutively proposing that the blade edge of graphene sheets can destroy the bacteria membrane and release silver cations promptly that are directed for the interaction with the cytoplasmic parts of the bacteria cell. Such findings offer green and biocompatible antibacterial agents based on the graphene derived from the biowaste products.

ACS Style

Emad S. Goda; Mahmoud H. Abu Elella; Muhammad Sohail; Bal Sydulu Singu; Bidhan Pandit; A.M. El Shafey; Abdelaziz M. Aboraia; Heba Gamal; Sang Eun Hong; Kuk Ro Yoon. N-methylene phosphonic acid chitosan/graphene sheets decorated with silver nanoparticles as green antimicrobial agents. International Journal of Biological Macromolecules 2021, 182, 680 -688.

AMA Style

Emad S. Goda, Mahmoud H. Abu Elella, Muhammad Sohail, Bal Sydulu Singu, Bidhan Pandit, A.M. El Shafey, Abdelaziz M. Aboraia, Heba Gamal, Sang Eun Hong, Kuk Ro Yoon. N-methylene phosphonic acid chitosan/graphene sheets decorated with silver nanoparticles as green antimicrobial agents. International Journal of Biological Macromolecules. 2021; 182 ():680-688.

Chicago/Turabian Style

Emad S. Goda; Mahmoud H. Abu Elella; Muhammad Sohail; Bal Sydulu Singu; Bidhan Pandit; A.M. El Shafey; Abdelaziz M. Aboraia; Heba Gamal; Sang Eun Hong; Kuk Ro Yoon. 2021. "N-methylene phosphonic acid chitosan/graphene sheets decorated with silver nanoparticles as green antimicrobial agents." International Journal of Biological Macromolecules 182, no. : 680-688.

Original research
Published: 30 March 2021 in Cellulose
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A revolutionary and straightforward technique with a dual functionality was manipulated for preparing graphene sheets (O-GRP) decorated with O-carboxymethyl chitosan nanoparticles (CMChNPs). Graphene was successfully exfoliated and decorated with CMChNPs through a simple ultrasonication tool. The developed graphene sheets were then utilized as the green binder for coating the surface of textile with the Ppy-Ag nanocomposite. A new vapor polymerization was used to synthesize the nanocomposite of polypyrrole-Ag on the graphene-modified fabric for acquiring ternary modified textiles (CT/O-GRP-Ppy-Ag). The structure and surface morphology of CMCh, O-GRP, and the various coated textiles have been carefully approved using various spectroscopic and microscopic analysis. The thermal stability, mechanical properties besides their electrical resistance, antimicrobial, and flame retardancy behaviors for the coated fabrics were investigated. The as-fabricated textile composites attained an inferior electrical resistance as 0.05 kΩ than that for the virgin textile (2770 kΩ) as an indication for the high conductive fabrics. The inhibition diameter zone for modified textiles was recorded as 24, and 28 mm for the E.coli, and S. aureus bacterial strains, respectively. Moreover, the rate of burning and LOI values for CT/O-GRP200-Ppy-Ag were significantly improved to 30.9 mm/min, and 22.8%, respectively compared to uncoated textile (149.3 mm/min, 17.8%), and the blank CT/O-GRP200 (79.2 mm/min, 19.9%) confirming the enhanced retardation against the fire growth.

ACS Style

Emad S. Goda; Mahmoud H. Abu Elella; Sang Eun Hong; Bidhan Pandit; Kuk Ro Yoon; Heba Gamal. Smart flame retardant coating containing carboxymethyl chitosan nanoparticles decorated graphene for obtaining multifunctional textiles. Cellulose 2021, 28, 5087 -5105.

AMA Style

Emad S. Goda, Mahmoud H. Abu Elella, Sang Eun Hong, Bidhan Pandit, Kuk Ro Yoon, Heba Gamal. Smart flame retardant coating containing carboxymethyl chitosan nanoparticles decorated graphene for obtaining multifunctional textiles. Cellulose. 2021; 28 (8):5087-5105.

Chicago/Turabian Style

Emad S. Goda; Mahmoud H. Abu Elella; Sang Eun Hong; Bidhan Pandit; Kuk Ro Yoon; Heba Gamal. 2021. "Smart flame retardant coating containing carboxymethyl chitosan nanoparticles decorated graphene for obtaining multifunctional textiles." Cellulose 28, no. 8: 5087-5105.

Journal article
Published: 05 February 2021 in Journal of Industrial and Engineering Chemistry
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In the present work, multiwall carbon nanotubes (CNTs) were used as a reducing agent for the preparation of CNT-MnO2 nanocomposites by varying the amount of potassium permanganate (KMnO4). The chemical compositions of the as-synthesized materials were analyzed using X-ray diffraction, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy, which showed the formation of MnO2 in the CNT-MnO2 nanocomposites. The electrochemical properties of the CNT-MnO2 nanocomposites were thoroughly investigated through cyclic voltammetry, charge–discharge, and impedance studies. The CNT-MnO2-25 nanocomposites appeared with the highest specific capacitance of 674 F g−1 at a current density of 2 A g−1; they also displayed an excellent capacitance retention of ∼110% even after the completion of 5000 continuous charge–discharge cycles at 10 A g−1.

ACS Style

Bal Sydulu Singu; Emad S. Goda; Kuk Ro Yoon. Carbon Nanotube–Manganese oxide nanorods hybrid composites for high-performance supercapacitor materials. Journal of Industrial and Engineering Chemistry 2021, 97, 239 -249.

AMA Style

Bal Sydulu Singu, Emad S. Goda, Kuk Ro Yoon. Carbon Nanotube–Manganese oxide nanorods hybrid composites for high-performance supercapacitor materials. Journal of Industrial and Engineering Chemistry. 2021; 97 ():239-249.

Chicago/Turabian Style

Bal Sydulu Singu; Emad S. Goda; Kuk Ro Yoon. 2021. "Carbon Nanotube–Manganese oxide nanorods hybrid composites for high-performance supercapacitor materials." Journal of Industrial and Engineering Chemistry 97, no. : 239-249.

Journal article
Published: 14 November 2020 in International Journal of Biological Macromolecules
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Herein, we reported the preparation of novel antibacterial nanocomposites based on biodegradable polymers. The nanocomposites were applied as capable adsorbent for removing of malachite green (MG) dye, as well as inhibiting of E. coli and S. aureus growth as the most common pollutants for water. The grafted xanthan gum with poly(vinylimidazole) (XG-g-PVI) nanocomposites were synthesized in the presence of different Montmorillonite (MMT) nanoclays concentrations (1%, 3% and 5%). The prepared modified XG nanocomposites were detected through XRD, SEM-EDX, FTIR and TEM. The maximum adsorption MG capacity was determined as 99.99% (909.1 mg/g) in basic medium at 30 °C for 90 min. The adsorption isotherm for removal of MG dye was studied against different models like Langmuir, Freundlich, Temkin, FloryHuggins isotherm models, however, the adsorption results were good fitted with Langmuir isotherm model (R2 = 0.9942). Additionally, various adsorption kinetic models: pseudo-first order, second order, pseudo-second order, and intra-particle diffusion models were studied for adsorption mechanism of MG dye on top of prepared nanocomposite surface. Finally, the antibacterial activity outcomes displayed that the prepared XG-g-PVI/MMT nanocomposites had excellent inhibition growth for bacteria and the antibacterial activity increased abruptly with the increased of MMT nanoclay concentrations.

ACS Style

Mahmoud H. Abu Elella; Emad S. Goda; Heba M. Abdallah; Ahmed Esmail Shalan; Heba Gamal; Kuk Ro Yoon. Innovative bactericidal adsorbents containing modified xanthan gum/montmorillonite nanocomposites for wastewater treatment. International Journal of Biological Macromolecules 2020, 167, 1113 -1125.

AMA Style

Mahmoud H. Abu Elella, Emad S. Goda, Heba M. Abdallah, Ahmed Esmail Shalan, Heba Gamal, Kuk Ro Yoon. Innovative bactericidal adsorbents containing modified xanthan gum/montmorillonite nanocomposites for wastewater treatment. International Journal of Biological Macromolecules. 2020; 167 ():1113-1125.

Chicago/Turabian Style

Mahmoud H. Abu Elella; Emad S. Goda; Heba M. Abdallah; Ahmed Esmail Shalan; Heba Gamal; Kuk Ro Yoon. 2020. "Innovative bactericidal adsorbents containing modified xanthan gum/montmorillonite nanocomposites for wastewater treatment." International Journal of Biological Macromolecules 167, no. : 1113-1125.

Review
Published: 05 November 2020 in Journal of Environmental Chemical Engineering
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Xanthan gum (XG), a naturally occurring microbial exopolysaccharide, is of a great commercial significance. It has demonstrated a significant potential in targeted applications such as advanced drug delivery, wastewater treatment, protein delivery, tissue engineering, and food packaging due to its outstanding physicochemical properties, biodegradability, and non-toxicity. However, certain limitations such as low surface area, poor mechanical performance, thermal stability, and bacterial growth can hinder its uses in specific applications. As a result, there have been various endeavors to modify xanthan gum by means of diverse modification approaches for enhancing its physicochemical properties, and therefore enabling its competence for the needs of drug delivery, tissue engineering, oil recovery, and environmental applications. To the best of our knowledge, this is the first review for providing a comprehensive picture of the advanced chemical treatment, grafting procedures, hydrogel synthesis, bio-nanocomposites containing metal, and metal oxide nanoparticles, graphene, and inorganic clays, along with the fabulous properties obtained for the xanthan derived materials. Furthermore, it exhibits the recent applications for these materials in industrial, biomedical engineering, wastewater treatment, and agricultural fields. In the future, the presented data will be considered a fabulous base for designing the next generation materials to be applied in further advanced uses.

ACS Style

Mahmoud H. Abu Elella; Emad S. Goda; Mohamed A. Gab-Allah; Sang Eun Hong; Bidhan Pandit; Seungho Lee; Heba Gamal; Aafaq Ur Rehman; Kuk Ro Yoon. Xanthan gum-derived materials for applications in environment and eco-friendly materials: A review. Journal of Environmental Chemical Engineering 2020, 9, 104702 .

AMA Style

Mahmoud H. Abu Elella, Emad S. Goda, Mohamed A. Gab-Allah, Sang Eun Hong, Bidhan Pandit, Seungho Lee, Heba Gamal, Aafaq Ur Rehman, Kuk Ro Yoon. Xanthan gum-derived materials for applications in environment and eco-friendly materials: A review. Journal of Environmental Chemical Engineering. 2020; 9 (1):104702.

Chicago/Turabian Style

Mahmoud H. Abu Elella; Emad S. Goda; Mohamed A. Gab-Allah; Sang Eun Hong; Bidhan Pandit; Seungho Lee; Heba Gamal; Aafaq Ur Rehman; Kuk Ro Yoon. 2020. "Xanthan gum-derived materials for applications in environment and eco-friendly materials: A review." Journal of Environmental Chemical Engineering 9, no. 1: 104702.

Original research
Published: 31 August 2019 in Cellulose
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A facile and green method was utilized for preparing an efficient dual function adsorbent as a filter for capturing crystal violet (CV) dye and an inhibitor for the growth of Escherichia coli based on interpenetrating networks (IPNs) between N,N,N-trimethyl chitosan (TMC) and xanthan gum (XG) in different weight ratios. The IPNs showed an excellent CV dye adsorption capacity (94.4%, Qmax = 555.6 mg g−1) at the optimum conditions chosen in this study, where 40 mg of the adsorbent was used for 50 mL of the 450 mg L−1 CV solution at pH 7, temperature of 30 °C and the equilibrium adsorption time of 6 h. The adsorption data were well fitted to the Langmuir isotherm model. The adsorption kinetics exhibited pseudo-first order and intraparticle diffusion model participating in the mechanism of CV adsorption on IPN surface. The antibacterial activity test exhibited that all TMC/XG IPNs inhibited growth of E. coli, suggesting potential application as an antibacterial adsorbent in wastewater treatment.

ACS Style

Mahmoud H. Abu Elella; Eman Abd Elhafeez; Emad S. Goda; Seungho Lee; Kuk Ro Yoon. Smart bactericidal filter containing biodegradable polymers for crystal violet dye adsorption. Cellulose 2019, 26, 9179 -9206.

AMA Style

Mahmoud H. Abu Elella, Eman Abd Elhafeez, Emad S. Goda, Seungho Lee, Kuk Ro Yoon. Smart bactericidal filter containing biodegradable polymers for crystal violet dye adsorption. Cellulose. 2019; 26 (17):9179-9206.

Chicago/Turabian Style

Mahmoud H. Abu Elella; Eman Abd Elhafeez; Emad S. Goda; Seungho Lee; Kuk Ro Yoon. 2019. "Smart bactericidal filter containing biodegradable polymers for crystal violet dye adsorption." Cellulose 26, no. 17: 9179-9206.

Review
Published: 12 April 2019 in Microchemical Journal
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Among the clays, halloysite nanotubes (HNTs) are fabulous hollow tubular type of aluminosilicates due to their interesting properties such as their natural occurrence, high surface area and cytocompatibility. Different ways of functionalization for the inner and surface of HNTs have been used to control their properties for specific applications. Moreover, the modified HNTs are considered a precious carrier for nanomaterials for improving their dispersion and can be designated for electrochemical sensing application due to their high surface area. The free lumen that was in HNTs can be utilized for hosting other compounds for obtaining nanostructures with excellent synergistic properties. The main purpose of this review is for the first time conducting a survey on the reports for engineering the HNTs surface to be used as an electrochemical sensor for identifying various analytes such as hydrogen peroxide, glucose, nitrite, ascorbic acid, surface plasmon resonance, catechol amines, hydrazine, dopamine and uric acid. Moreover, the latest procedures for the modification of HNTs with specified applications have been also described.

ACS Style

Emad S. Goda; Mohamed Gab-Allah; Bal Sydulu Singu; Kuk Ro Yoon. Halloysite nanotubes based electrochemical sensors: A review. Microchemical Journal 2019, 147, 1083 -1096.

AMA Style

Emad S. Goda, Mohamed Gab-Allah, Bal Sydulu Singu, Kuk Ro Yoon. Halloysite nanotubes based electrochemical sensors: A review. Microchemical Journal. 2019; 147 ():1083-1096.

Chicago/Turabian Style

Emad S. Goda; Mohamed Gab-Allah; Bal Sydulu Singu; Kuk Ro Yoon. 2019. "Halloysite nanotubes based electrochemical sensors: A review." Microchemical Journal 147, no. : 1083-1096.

Review
Published: 29 September 2018 in Thermochimica Acta
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Halloysite nanotubes (HNTs) are precious clay materials with a hollow nanotubular structure. They are used up to date latent for synthesizing polymeric nanocomposite because of high surface area, low cost and the natural existence. HNTs nanocomposites have been fabricated using different methods; however, the widely used is melt mixing technique. The functionalization of HNTs is very crucial to achieve the well dispersion in polymer. The flammability, thermal stability and mechanical properties were improved by the addition of HNTs. Because of the tube shape of HNTs, it can help in trapping the flammable volatiles besides, HNTs can form a strong barrier on the surface of polymer against heat and mass transport processes. The essential aim of this review is the latest researches on modified halloysite nanotubes as an efficient flame retardant for various polymer nanocomposites and their influence on the mechanical properties and thermal stability.

ACS Style

Emad. S. Goda; Kuk Ro Yoon; Shimaa H. El-Sayed; Sang Eun Hong. Halloysite nanotubes as smart flame retardant and economic reinforcing materials: A review. Thermochimica Acta 2018, 669, 173 -184.

AMA Style

Emad. S. Goda, Kuk Ro Yoon, Shimaa H. El-Sayed, Sang Eun Hong. Halloysite nanotubes as smart flame retardant and economic reinforcing materials: A review. Thermochimica Acta. 2018; 669 ():173-184.

Chicago/Turabian Style

Emad. S. Goda; Kuk Ro Yoon; Shimaa H. El-Sayed; Sang Eun Hong. 2018. "Halloysite nanotubes as smart flame retardant and economic reinforcing materials: A review." Thermochimica Acta 669, no. : 173-184.

Original paper
Published: 21 March 2018 in MAPAN
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A novel type of reference material has been prepared and characterized for smoke density chamber calibration in the flame condition by Fire Protection Laboratory, National Institute of Standards, Egypt. The new reference material was fabricated by mixing modified magnesium hydroxide nanoparticles (MH-NP-OP) with acrylonitrile–butadiene–styrene copolymer (ABS). The reference material was certified for the physical properties of maximum specific optical density (Dm) and corrected maximum specific optical density (Dm·corr) using the analysis of two different competent laboratories. Preparation, characterization, homogeneity testing and certified value assignment for the developed reference material have been studied. It was clearly demonstrated that the smoke measurement of the two laboratories are harmonic which is an obvious prerequisite for the confidence assessment of the reference material. A metrological approach was followed to detect the statistical biases between different laboratories data to achieve an appropriate accuracy in smoke measurements. The obtained measurement results were statistically analyzed and the certified values of Dm and Dm·corr for reference material were estimated as 510.35 and 472.95, respectively as well as their expanded relative uncertainties at confidence level 95% were recorded 2.78 and 2.7%, respectively. The developed reference material are expected to be used to assist in validating smoke measurements of different materials to realize their fire hazard when be used in building.

ACS Style

Nour Attia; Emad S. Goda; M. A. Hassan; M. W. Sabaa; M. A. Nour. Preparation and Certification of Novel Reference Material for Smoke Density Measurements. MAPAN 2018, 33, 297 -306.

AMA Style

Nour Attia, Emad S. Goda, M. A. Hassan, M. W. Sabaa, M. A. Nour. Preparation and Certification of Novel Reference Material for Smoke Density Measurements. MAPAN. 2018; 33 (3):297-306.

Chicago/Turabian Style

Nour Attia; Emad S. Goda; M. A. Hassan; M. W. Sabaa; M. A. Nour. 2018. "Preparation and Certification of Novel Reference Material for Smoke Density Measurements." MAPAN 33, no. 3: 297-306.