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Adel M, Mohamed EA, Abo-Shanab ZL. One-pot approach for synthesis of multi-layered nanosheets of N-dopped graphene derived from chitosan for reinforcing cement mortar. Int J Biol Macromol 2024; 277:134465. [PMID: 39116981 DOI: 10.1016/j.ijbiomac.2024.134465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 07/31/2024] [Accepted: 08/02/2024] [Indexed: 08/10/2024]
Abstract
The synthesis of graphene via traditional methods has several drawbacks, such as the release of poisonous gases, Most of these techniques are time-consuming and tedious, besides the absence of control over the structural composition of graphene during synthesis. In this study, a facile approach for the synthesis of graphene densely doped with nitrogen (N-dopped graphene (NG)) from novel precursor chitosan throughout the direct solvothermal treatment of chitosan under mild circumstances at 250 °C and 270 °C. Cetyltrimethylammonium bromide (CTAB) and ammonia are utilized as structural directing agents. FTIR, XRD, CHNS/O elemental analysis, XPS, and Raman spectroscopy are utilized to elucidate the chemical composition and purity of N-dopped graphene. The surface morphology of NG is studied by using SEM, HR-TEM, and selected area electron diffraction (SAED). The results approved that, the one-pot, single-step approach is a simple and cost-effective technique for producing a high throughput of NG, of charming microstructure features, including good graphitization, low oxidation state, good exfoliation level, and very extended lateral dimension sheets. Profound visions on the growing mechanism have been proposed. The incorporation effect of NG to cement mortar is also studied. Two percentages of NG 0.05 wt% and, 0.10 wt% from the total cement mass were utilized. A microstructural investigation of incorporated NG on cement mortar is studied by conducting AFM, and SEM. Furthermore, workability and mechanical characterizations including, compressive strength, and flexural strength are investigated. Also, the dynamic mechanical parameters including storage modulus and loss factor are studied. It is noticed that the workability decreased from 14.8 % to 7.8 % with the addition of 0.05 wt% and 0.1 wt% NG respectively. However, the maximum increments of the compressive strength were 35 % for the mortar containing 0.1 wt% NG and flexural strength increased three times than the unmodified one. Also, the cement mortar containing 0.1 wt% NG has a storage modulus of 12 MPa compared to unmodified 1 MPa and has the lowest loss factor (damping coefficient). These results verified that incorporating NG nanosheets in cement has a positive effect on reinforcing cement mortar.
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Affiliation(s)
- Marwa Adel
- Fabrication Technology Department Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA City), New Borg El-Arab, Alexandria 21934, Egypt; Petroleum Applications Department, Egyptian Petroleum Research Institute, 11776 Nasr City, Cairo, Egypt
| | - Eslam A Mohamed
- Petroleum Applications Department, Egyptian Petroleum Research Institute, 11776 Nasr City, Cairo, Egypt.
| | - Z L Abo-Shanab
- Petroleum Applications Department, Egyptian Petroleum Research Institute, 11776 Nasr City, Cairo, Egypt
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2
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Rahmatian N, Abbasi S, Abbasi N, Tavakkoli Yaraki M. Green-synthesized chitosan‑carbon dot nanocomposite as turn-on aptasensor for detection and quantification of Leishmania infantum parasite. Int J Biol Macromol 2024; 270:132483. [PMID: 38763252 DOI: 10.1016/j.ijbiomac.2024.132483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
Leishmania is one of the most common diseases between human and animals, caused by Leishmania infantum parasite. Here, we have developed an ultra-selective turn-on fluorescent probe based on an aptamer and Chitosan-CD nanocomposite. The CD used in this study were synthesized using Quercus cap extract and a microwave-assisted approach. The Chitosan-CD nanocomposite was optimized using several microscopic and spectroscopic techniques to possess a bright fluorescence emission before adding aptamer and totally quenched fluorescence after addition of aptamer. The designed probe was proficient in the detection and quantification Leishmania infantum parasite by selective targeting of poly(A) binding protein (PABP) on the surface of the parasite. The designed fluorescent biosensor with high sensitivity, excellent selectivity, and a limit of detection (LOD) of 94 cells/mL of the Leishmania infantum parasite as well as a linear response in the ranges of 188-750 cells/mL and 3000-6000 cells/mL (R2 ≥ 0.98 for both linear ranges). Additionally, the selectivity of the designed probe was evaluated in the presence of different pathogenic species such as Trypanosoma brucei parasite and Staphylococcus aureus bacteria, as well as LiIF2α and LiP2a and BSA proteins as interference substances. The results of this study shows that using Chitosan-CD nanocomposite is a great strategy for developing selective turn-on probes with extraordinary accuracy and sensitivity in identifying Leishmania infantum parasite, especially in the early stages of the disease, and it is promising for the future clinical applications.
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Affiliation(s)
| | | | - Naser Abbasi
- Department of Pharmacology, School of Medicine, Ilam University of Medical Sciences, Ilam, Iran; Biotechnology and Medicinal Plants Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Mohammad Tavakkoli Yaraki
- School of Natural Sciences, Faculty of Science and Engineering, Macquarie University, NSW 2109, Australia.
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3
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Helim R, Zazoua A, Jaffrezic-Renault N, Korri-Youssoufi H. Label free electrochemical sensors for Pb(II) detection based on hemicellulose extracted from Opuntia Ficus Indica cactus. Talanta 2023; 265:124784. [PMID: 37356191 DOI: 10.1016/j.talanta.2023.124784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 03/09/2023] [Accepted: 06/06/2023] [Indexed: 06/27/2023]
Abstract
We aim to develop an electrochemical sensor for a divalent metal ion (lead II), a highly toxic water contaminant. We explore a sensor formed with a hemicellulose polysaccharide extracted from the Opuntia Ficus Indica cactus associated with agarose as a sensitive layer deposited on a gold electrode. This sensor combines the functional groups of hemicellulose that could form a complex with metal ions and agarose with gelling properties to form a stable membrane. The sensor demonstrated a loading ability of Pb2+, with higher affinity compared to other metal ions such as Hg2+, Ni2+, and Cu2+, thanks to the chemical structure of hemicellulose. The detection was measured by square wave voltammetry based on a well-defined redox peak of the metal ions. The sensor shows high sensitivity towards Pb2+ with a detection limit of 1.3 fM. The application in river and sea water using the standard addition method for lead detection was studied.
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Affiliation(s)
- Rabiaa Helim
- University of Jijel, Laboratory of Applied Energetics and Materials, Jijel, 18000, Ouled Aissa, Algeria; Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), ECBB, 17 avenue des sciences, 91400, Orsay, France.
| | - Ali Zazoua
- University of Jijel, Laboratory of Applied Energetics and Materials, Jijel, 18000, Ouled Aissa, Algeria; ENP of Constantine, Laboratoire de Génie des Procédés pour le Développement Durable et les Produits de Santé, Constantine, 25000, Algeria.
| | | | - Hafsa Korri-Youssoufi
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), ECBB, 17 avenue des sciences, 91400, Orsay, France.
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4
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Kyomuhimbo HD, Feleni U, Haneklaus NH, Brink H. Recent Advances in Applications of Oxidases and Peroxidases Polymer-Based Enzyme Biocatalysts in Sensing and Wastewater Treatment: A Review. Polymers (Basel) 2023; 15:3492. [PMID: 37631549 PMCID: PMC10460086 DOI: 10.3390/polym15163492] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/10/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Oxidase and peroxidase enzymes have attracted attention in various biotechnological industries due to their ease of synthesis, wide range of applications, and operation under mild conditions. Their applicability, however, is limited by their poor stability in harsher conditions and their non-reusability. As a result, several approaches such as enzyme engineering, medium engineering, and enzyme immobilization have been used to improve the enzyme properties. Several materials have been used as supports for these enzymes to increase their stability and reusability. This review focusses on the immobilization of oxidase and peroxidase enzymes on metal and metal oxide nanoparticle-polymer composite supports and the different methods used to achieve the immobilization. The application of the enzyme-metal/metal oxide-polymer biocatalysts in biosensing of hydrogen peroxide, glucose, pesticides, and herbicides as well as blood components such as cholesterol, urea, dopamine, and xanthine have been extensively reviewed. The application of the biocatalysts in wastewater treatment through degradation of dyes, pesticides, and other organic compounds has also been discussed.
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Affiliation(s)
- Hilda Dinah Kyomuhimbo
- Department of Chemical Engineering, University of Pretoria, Pretoria 0028, South Africa;
| | - Usisipho Feleni
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Campus, Roodepoort, Johannesburg 1710, South Africa;
| | - Nils H. Haneklaus
- Transdisciplinarity Laboratory Sustainable Mineral Resources, University for Continuing Education Krems, 3500 Krems, Austria;
| | - Hendrik Brink
- Department of Chemical Engineering, University of Pretoria, Pretoria 0028, South Africa;
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5
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Xu C, Bonfante G, Park J, Salles V, Kim B. Fabrication of an electrospun polycaprolactone substrate for colorimetric bioassays. Biomed Microdevices 2023; 25:32. [PMID: 37589770 PMCID: PMC10435419 DOI: 10.1007/s10544-023-00673-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2023] [Indexed: 08/18/2023]
Abstract
Colorimetric assays rely on detecting colour changes to measure the concentration of target molecules. Paper substrates are commonly used for the detection of biomarkers due to their availability, porous structure, and capillarity. However, the morphological and mechanical properties of paper, such as fibre diameter, pore size, and tensile strength, cannot be easily tuned to meet the specific requirements of colorimetric sensors, including liquid capacity and reagent immobilisation. As an alternative to paper materials, biodegradable polymeric membranes made of electrospun polycaprolactone (PCL) fibres can provide various tunable properties related to fibre diameter and pore size.We aimed to obtain a glucose sensor substrate for colorimetric sensing using electrospinning with PCL. A feeding solution was created by mixing PCL/chloroform and 3,3',5',5'-tetramethylbenzidine (TMB)/ethanol solutions. This solution was electrospun to fabricate a porous membrane composed of microfibres consist of PCL and TMB. The central area of the membrane was made hydrophilic through air plasma treatment, and it was subsequently functionalized with a solution containing glucose oxidase, horseradish peroxidase, and trehalose.The sensing areas were evaluated by measuring colour changes in glucose solutions of varying concentrations. The oxidation reactions of glucose and TMB in sensor substrates were recorded and analysed to establish the correlation between different glucose concentrations and colour changes. For comparison, conventional paper substrates prepared with same parameters were evaluated alongside the electrospun PCL substrates. As a result, better immobilization of reagents and higher sensitivity of glucose were achieved with PCL substrates, indicating their potential usage as a new sensing substrate for bioassays.
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Affiliation(s)
- Chensong Xu
- Department of Precision Engineering, School of Engineering, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Gwenaël Bonfante
- Institute of Industrial Science, The University of Tokyo, Tokyo, 153-8505, Japan
- LIMMS, CNRS-IIS UMI 2820, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Jongho Park
- Institute of Industrial Science, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Vincent Salles
- LIMMS, CNRS-IIS UMI 2820, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Beomjoon Kim
- Institute of Industrial Science, The University of Tokyo, Tokyo, 153-8505, Japan.
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6
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El-Wakeel NM, Tawfik SM, Abd-Elaal AA, Moustafa Y, Khalil MM. Chitosan-based fluorescein amphiphile macromolecular sensor for Hg2+ detection. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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7
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Ahmed ASA, Negm ANRM, Mohammed M, Abd El-Majeed M, Ali AK, Abdelmotalleib M. Biodegradable Polymers for Industrial Applications. HANDBOOK OF BIODEGRADABLE MATERIALS 2023:451-476. [DOI: 10.1007/978-3-031-09710-2_37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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8
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Cross-Linked Gamma Polyglutamic Acid/Human Hair Keratin Electrospun Nanofibrous Scaffolds with Excellent Biocompatibility and Biodegradability. Polymers (Basel) 2022; 14:polym14245505. [PMID: 36559871 PMCID: PMC9781754 DOI: 10.3390/polym14245505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Recently, human hair keratin has been widely studied and applied in clinical fields due to its good histocompatibility, biocompatibility, and biodegradability. However, the regenerated keratin from human hair cannot be electrospun alone because of its low molecular weight. Herein, gamma polyglutamic acid (γ-PGA) was first selected to fabricate smooth and uniform γ-PGA/keratin composite scaffolds with excellent biocompatibility and biodegradability by electrospinning technology and a chemical cross-linking method in this study. The effect of electrospinning parameters on the structure and morphology, the mechanism of chemical cross-linking, biocompatibility in vitro cell culture experiments, and biodegradability in phosphate-buffered saline buffer solution and trypsin solution of the γ-PGA/keratin electrospun nanofibrous scaffolds (ENS) was studied. The results show that the cross-linked γ-PGA/keratin ENSs had excellent water stability and biodegradability. The γ-PGA/keratin ENSs showed better biocompatibility in promoting cell adhesion and cell growth compared with the γ-PGA ENSs. It is expected that γ-PGA/keratin ENSs will be easily and significantly used in tissue engineering to repair or regenerate materials.
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9
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Negm NA, Altalhi AA, Saleh Mohamed NE, Kana MTHA, Mohamed EA. Growth Inhibition of Sulfate-Reducing Bacteria during Gas and Oil Production Using Novel Schiff Base Diquaternary Biocides: Synthesis, Antimicrobial, and Toxicological Assessment. ACS OMEGA 2022; 7:40098-40108. [PMID: 36385895 PMCID: PMC9647739 DOI: 10.1021/acsomega.2c04836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Upstream crude oil production equipment is always exposed to destruction damagingly which is caused by sulfate-reducing bacterium (SRB) activities that produce H2S gas, which leads to increased metal corrosion (bio-fouling) rates and inflicts effective infrastructure damage. Hence, oil and gas reservoirs must be injected with biocides and inhibitors which still offer the foremost protection against harmful microbial activity. However, because of the economic and environmental risks associated with biocides, the oil and gas sectors improve better methods for their usage. This work describes the synthesis and evaluation of the biological activities as the cytotoxicity and antimicrobial properties of a series of diquaternary cationic biocides that were studied during the inhibition of microbial biofilms. The prepared diquaternary compound was synthesized by coupling vanillin and 4-aminoantipyrene to achieve the corresponding Schiff base, followed by a quaternization reaction using 1,6-bromohexane, 1,8-bromooctane, and 1,12-bromododecane. The increase of their alkyl chain length from 6 to 12 methylene groups increased the obtained antimicrobial activity and cytotoxicity. Antimicrobial efficacies of Q1-3 against various biofilm-forming microorganisms, including bacteria and fungi, were examined utilizing the diameter of inhibition zone procedures. The results revealed that cytotoxic efficacies of Q1-3 were significantly associated mainly with maximum surface excess and interfacial characteristics. The cytotoxic efficiencies of Q1-3 biocides demonstrated promising results due to their comparatively higher efficacies against SRB. Q3 exhibited the highest cytotoxic biocide against the gram +ve, gram -ve, and SRB species according to the inhibition zone diameter test. The toxicity of the studied microorganisms depended on the nature and type of the target microorganism and the hydrophobicity of the biocide molecules. Cytotoxicity assessment and antimicrobial activity displayed increased activity by the increase in their alkyl chain length.
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Affiliation(s)
- Nabel A. Negm
- Egyptian
Petroleum Research Institute, Petrochemicals, 1 Ahmed Elzommer Street, Nasr City, CairoEG 11776, Egypt
| | - Amal A. Altalhi
- Department
of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif21944, Saudi Arabia
| | - Nermin E. Saleh Mohamed
- Egyptian
Petroleum Research Institute, Petrochemicals, 1 Ahmed Elzommer Street, Nasr City, CairoEG 11776, Egypt
| | - Maram T. H. A. Kana
- National
Institute of LASER Enhanced Science, Cairo
University, Giza11776, Egypt
| | - Eslam A. Mohamed
- Egyptian
Petroleum Research Institute, Petrochemicals, 1 Ahmed Elzommer Street, Nasr City, CairoEG 11776, Egypt
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10
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Farag AA, Gafar Afif A, Salih SA, Altalhi AA, Mohamed EA, Mohamed GG. Highly Efficient Elimination of Pb +2 and Al +3 Metal Ions from Wastewater Using Graphene Oxide/3,5-Diaminobenzoic Acid Composites: Selective Removal of Pb 2+ from Real Industrial Wastewater. ACS OMEGA 2022; 7:38347-38360. [PMID: 36340163 PMCID: PMC9631901 DOI: 10.1021/acsomega.2c03150] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 10/11/2022] [Indexed: 06/01/2023]
Abstract
In this study, graphene oxide (GO) was functionalized with 3,5-diaminobenzoic acid (DABA) by a one-step method to produce functionalized graphene oxide (FGO). FGO is a new type of absorbent crystalline substance that has a high surface area and a large porosity site as well as a large number of dentate functional groups which lead to enhanced adsorption performance for heavy metal ions. The adsorption efficiency of FGO for Pb+2 and Al+3 metal ions was extra satisfactory when compared with GO due to the ease of design and the homogeneous structure of FGO. The structure of synthesized GO and FGO was confirmed by different techniques such as FTIR, XRD, TGA, BET nitrogen adsorption-desorption methods, and TEM analyses. The mass of utilized adsorbents, the pH of the medium, the concentration of ionic species in the medium, temperature, and process time were all investigated as variables in the adsorbent procedure. The experimental data recorded that the maximum adsorption efficiency of the 0.5 g/L FGO composite was 99.7 and 99.8% for Pb+2 and Al+3 metal ions, respectively, while in the case of using GO, the maximum adsorption efficiency was 92.6 and 91.9% at ambient temperature in a semineutral medium at pH 6 after 4 h. The adsorption results were in good conformity with the Freundlich model and pseudo-second-order kinetics for Pb+2 and Al+3 metal ions. Also, the reusability study indicates that FGO can be used repeatedly at least for five cycles with a slight significant loss in its efficiency.
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Affiliation(s)
- Ahmed A. Farag
- Egyptian
Petroleum Research Institute (EPRI), 11727Cairo, Egypt
| | - Aboubakr Gafar Afif
- Chemistry
Department, Faculty of Science, Cairo University, 12613Giza, Egypt
| | - Said A. Salih
- Chemistry
Department, Faculty of Science, Cairo University, 12613Giza, Egypt
| | - Amal A. Altalhi
- Department
of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif21944, Saudi Arabia
| | | | - Gehad G. Mohamed
- Chemistry
Department, Faculty of Science, Cairo University, 12613Giza, Egypt
- Nanoscience
Department, Basic and Applied Sciences Institute, Egypt-Japan University of Science and Technology, New Borg El Arab, Alexandria21934, Egypt
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11
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Plekhanova YV, Reshetilov AN. Nanomaterials for Controlled Adjustment of the Parameters of Electrochemical Biosensors and Biofuel Cells. BIOL BULL+ 2022. [DOI: 10.1134/s1062359022040124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Plekhanova YV, Rai M, Reshetilov AN. Nanomaterials in bioelectrochemical devices: on applications enhancing their positive effect. 3 Biotech 2022; 12:231. [PMID: 35996672 PMCID: PMC9391563 DOI: 10.1007/s13205-022-03260-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 07/17/2022] [Indexed: 11/01/2022] Open
Abstract
Electrochemical biosensors and biofuel cells are finding an ever-increasing practical application due to several advantages. Biosensors are miniature measuring devices, which can be used for on-the-spot analyses, with small assay times and sample volumes. Biofuel cells have dual benefits of environmental cleanup and electric energy generation. Application of nanomaterials in biosensor and biofuel-cell devices increases their functioning efficiency and expands spheres of use. This review discusses the potential of nanomaterials in improving the basic parameters of bioelectrochemical systems, including the sensitivity increase, detection lower-limit decrease, detection-range change, lifetime increase, substrate-specificity control. In most cases, the consideration of the role of nanomaterials links a certain type of nanomaterial with its effect on the bioelectrochemical device upon the whole. The review aims at assessing the effects of nanomaterials on particular analytical parameters of a biosensor/biofuel-cell bioelectrochemical device.
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Affiliation(s)
- Yulia V. Plekhanova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Center for Biological Research of the Russian Academy of Sciences, 142290 Pushchino, Russian Federation
| | - Mahendra Rai
- Nanobiotechnology Laboratory, Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati, MH 444602 India
| | - Anatoly N. Reshetilov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Center for Biological Research of the Russian Academy of Sciences, 142290 Pushchino, Russian Federation
- Tula State University, 300012 Tula, Russian Federation
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13
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Sochilina AV, Akasov RA, Arkharova NA, Klechkovskaya VV, Mironov AV, Prostyakova AI, Sholina NV, Zubov VP, Generalova AN, Vikhrov AA. Fabrication of moldable chitosan gels via thermally induced phase separation in aqueous alcohol solutions. Int J Biol Macromol 2022; 215:501-511. [PMID: 35716792 DOI: 10.1016/j.ijbiomac.2022.06.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/08/2022] [Accepted: 06/12/2022] [Indexed: 01/09/2023]
Abstract
Wide application of chitosan in modern technologies is limited by the lack of reliable and low-cost techniques to prepare size-tuned constructs with a complex surface morphology, improved optical and mechanical properties. We report a new simple method for preparation of transparent thermoreversible chitosan alcogels from chitosan/H2O/ethanol ternary systems. This method, termed "low temperature thermally induced phase separation under non-freezing conditions" (LT-TIPS-NF), fine tunes gelation by adjusting only temperature (from 5 to -25 °C) and varying the initial content of chitosan (from 0.5 to 2.0 wt%) and ethanol (from 28.5 to 47.5 vol%). Transparent non-swelling final constructs of complex shape are prepared by fixing the pre-formed alcogels with a base solution. The size of the gel constructs is limited only by the dimensions of the mold and the cooling chamber. The LT-TIPS-NF is applicable both in injection molding and 3D printing techniques. The in vitro and in vivo experiments show the absence of prominent cytotoxicity and well-defined cell adhesion on the obtained hydrogels. Thus, this facile and scalable technique provides the multifunctional chitosan gel preparation with easily controlled properties exploiting inexpensive, renewable, and environmentally friendly source polysaccharide. These materials have prospects for a variety of uses, especially for biomedical applications.
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Affiliation(s)
- Anastasia V Sochilina
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia; Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia.
| | - Roman A Akasov
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia; Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia; I.M. Sechenov First Moscow State Medical University, Trubetskaya St., 8/2, Moscow 119991, Russia
| | - Natalia A Arkharova
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia
| | - Vera V Klechkovskaya
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia
| | - Anton V Mironov
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia
| | - Anna I Prostyakova
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
| | - Natalya V Sholina
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia; Morozovskaya Children's City Clinical Hospital, 4th Dobryninsky Lane, 1/9, Moscow 119049, Russia
| | - Vitaly P Zubov
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
| | - Alla N Generalova
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
| | - Alexander A Vikhrov
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
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14
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Ahmed H, Altalhi AA, Elbanna SA, El-Saied HA, Farag AA, Negm NA, Mohamed EA. Effect of Reaction Parameters on Catalytic Pyrolysis of Waste Cooking Oil for Production of Sustainable Biodiesel and Biojet by Functionalized Montmorillonite/Chitosan Nanocomposites. ACS OMEGA 2022; 7:4585-4594. [PMID: 35155949 PMCID: PMC8829930 DOI: 10.1021/acsomega.1c06518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
The use of waste oils as pyrolysis feedstocks to manufacture high-grade biofuels has prompted researchers to focus on developing renewable energy to overcome the depletion of fossil fuel supplies and the global warming phenomena. Because of their high hydrogen and volatile matter concentration, waste oils are ideal raw materials for the production of biofuels. It is challenging to attain satisfactory results with conventional methods, such as transesterification, gasification, solvent extraction, and hydrotreating due to flaws such as high energy demand, long time, and high operating costs. Catalytic pyrolysis of waste edible oils was employed as a resource for the generation of biodiesel. The application of the catalytic cracking process has the potential to alleviate the existing situation. In this study of catalytic cracking conversion of waste cooking oil to produce different biofuels, grades were investigated using two heterogeneous catalysts. The catalysts were activated montmorillonite (PAMMT) clay and its modified form using a chitosan biopolymer (PAMMT-CH) nanocomposite. The catalysts were identified using infrared spectroscopy, X-ray diffraction patterns, transmittance electron microscopy images, surface area, and thermal stability. The catalysts were tested for their performances using different amounts (0.1-1% by weight) at a temperature assortment of 200-400 °C during a time range of 60-300 min. The experimental studies were carried out in a batch reactor. GC mass spectra were used to investigate the catalytic cracking products. Fractional distillation is used to separate the final products from various reaction conditions. The physicochemical properties of resulting biofuels were profiled by quantifying their densities, viscosities, specific gravities, pour points, flash and fire points, cetane numbers, carbon and ash residues, and sulfur contents. The optimum conditions of the yield product were 300 and 400 °C, catalyst weights of 0.7 and 0.8% w/v, and reaction times of 120 and 180 min concerning the (PAMMT) and (PAMMT-CH) nanocomposite, respectively. The determined properties were located within the limits of the specific standards of ASTM specifications. As a result, the PAMMT nanocomposite produced biofuel comparable to biodiesel according to ASTM specifications, while the PAMMT-CH nanocomposite produced biofuel comparable to biojet.
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Affiliation(s)
- Hanan
A. Ahmed
- Egyptian
Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Amal A. Altalhi
- Department
of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Sameh A. Elbanna
- Egyptian
Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Hend A. El-Saied
- Egyptian
Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Ahmed A. Farag
- Egyptian
Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Nabel A. Negm
- Egyptian
Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Eslam A. Mohamed
- Egyptian
Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
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15
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Cervantes O, Lopez ZDR, Casillas N, Knauth P, Checa N, Cholico FA, Hernandez-Gutiérrez R, Quintero LH, Paz JA, Cano ME. A Ferrofluid with Surface Modified Nanoparticles for Magnetic Hyperthermia and High ROS Production. Molecules 2022; 27:544. [PMID: 35056860 PMCID: PMC8781673 DOI: 10.3390/molecules27020544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 11/17/2022] Open
Abstract
A ferrofluid with 1,2-Benzenediol-coated iron oxide nanoparticles was synthesized and physicochemically analyzed. This colloidal system was prepared following the typical co-precipitation method, and superparamagnetic nanoparticles of 13.5 nm average diameter, 34 emu/g of magnetic saturation, and 285 K of blocking temperature were obtained. Additionally, the zeta potential showed a suitable colloidal stability for cancer therapy assays and the magneto-calorimetric trails determined a high power absorption density. In addition, the oxidative capability of the ferrofluid was corroborated by performing the Fenton reaction with methylene blue (MB) dissolved in water, where the ferrofluid was suitable for producing reactive oxygen species (ROS), and surprisingly a strong degradation of MB was also observed when it was combined with H2O2. The intracellular ROS production was qualitatively corroborated using the HT-29 human cell line, by detecting the fluorescent rise induced in 2,7-dichlorofluorescein diacetate. In other experiments, cell metabolic activity was measured, and no toxicity was observed, even with concentrations of up to 4 mg/mL of magnetic nanoparticles (MNPs). When the cells were treated with magnetic hyperthermia, 80% of cells were dead at 43 °C using 3 mg/mL of MNPs and applying a magnetic field of 530 kHz with 20 kA/m amplitude.
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Affiliation(s)
- Oscar Cervantes
- Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Marcelino García Barragán 1421, Col. Olímpica, Guadalajara C.P. 44430, Jalisco, Mexico; (O.C.); (N.C.)
| | - Zaira del Rocio Lopez
- Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Col. Linda Vista, Ocotlan C.P. 47810, Jalisco, Mexico; (Z.d.R.L.); (P.K.); (N.C.); (F.A.C.); (J.A.P.)
| | - Norberto Casillas
- Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Marcelino García Barragán 1421, Col. Olímpica, Guadalajara C.P. 44430, Jalisco, Mexico; (O.C.); (N.C.)
| | - Peter Knauth
- Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Col. Linda Vista, Ocotlan C.P. 47810, Jalisco, Mexico; (Z.d.R.L.); (P.K.); (N.C.); (F.A.C.); (J.A.P.)
| | - Nayeli Checa
- Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Col. Linda Vista, Ocotlan C.P. 47810, Jalisco, Mexico; (Z.d.R.L.); (P.K.); (N.C.); (F.A.C.); (J.A.P.)
| | - Francisco Apolinar Cholico
- Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Col. Linda Vista, Ocotlan C.P. 47810, Jalisco, Mexico; (Z.d.R.L.); (P.K.); (N.C.); (F.A.C.); (J.A.P.)
| | - Rodolfo Hernandez-Gutiérrez
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C. Av. Normalistas 800 Colinas de La Normal, Guadalajara C.P. 44270, Jalisco, Mexico;
| | - Luis Hector Quintero
- Centro Universitario de Ciencias Económico Administrativas, Universidad de Guadalajara, Periférico Norte 799, Col. Los Belenes, Zapopan C.P. 45100, Jalisco, Mexico;
| | - Jose Avila Paz
- Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Col. Linda Vista, Ocotlan C.P. 47810, Jalisco, Mexico; (Z.d.R.L.); (P.K.); (N.C.); (F.A.C.); (J.A.P.)
| | - Mario Eduardo Cano
- Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Col. Linda Vista, Ocotlan C.P. 47810, Jalisco, Mexico; (Z.d.R.L.); (P.K.); (N.C.); (F.A.C.); (J.A.P.)
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16
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Ahmed ASA, Negm ANRM, Mohammed M, Abd El-Majeed M, Ali AK, Abdelmotalleib M. Biodegradable Polymers for Industrial Applications. HANDBOOK OF BIODEGRADABLE MATERIALS 2022:1-26. [DOI: 10.1007/978-3-030-83783-9_37-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/13/2022] [Indexed: 09/02/2023]
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17
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Abd
El Khalk AA, Betiha MA, Mansour AS, Abd El Wahed MG, Al-Sabagh AM. High Degradation of Methylene Blue Using a New Nanocomposite Based on Zeolitic Imidazolate Framework-8. ACS OMEGA 2021; 6:26210-26220. [PMID: 34660980 PMCID: PMC8515569 DOI: 10.1021/acsomega.1c03195] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/16/2021] [Indexed: 05/28/2023]
Abstract
The development of broad-spectrum ultraviolet- and visible-light photocatalysts constitutes one of the most significant challenges in the field of photocatalytic pollutant removal. Here, the efficiency of the directly prepared nitrogen-doped quantum zeolitic imidazolate framework (ZIF)-8-dot catalyst for the photocatalytic degradation of the methylene blue dye was reported. The prepared catalysts were characterized using Brunauer-Emmett-Teller, X-ray diffraction, ultraviolet-visible spectroscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy techniques. Under sunlight irradiation, the 1% nitrogen-doped quantum-ZIF-8-dot catalyst showed 75% photodegradation in half an hour and ≈93% photodegradation after 3 hours compared to ≈87% for the ZIF-8 metal-organic framework. The high performance of the 1% nitrogen-doped quantum-ZIF-8-dot catalyst was attributed to the synergism between the catalyst components, upconverted fluorescence property of nitrogen-doped quantum dots, and charge (electrons-holes) separation. The reactive radical test revealed that the hydroxyl radical was dominant. The step-scheme heterojunction mechanism for photocatalytic degradation was also deduced. The kinetic study through the photocatalytic isotherms revealed that the pseudo-first-order kinetic model can describe the reaction mechanism.
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Affiliation(s)
| | | | - Ahmed Sadek Mansour
- National
Institute of Laser Enhanced Sciences (NILES), Cairo University, Cairo 12613, Egypt
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18
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Silva LP, Silva TA, Moraes FC, Fatibello-Filho O. A voltammetric sensor based on a carbon black and chitosan-stabilized gold nanoparticle nanocomposite for ketoconazole determination. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4495-4502. [PMID: 34514492 DOI: 10.1039/d1ay01321a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A modified glassy carbon electrode with carbon black (CB) and gold nanoparticles (AuNPs) within a crosslinked chitosan (CTS) film is proposed in this work. The electroanalytical performance of the modified CB-CTS-AuNPs/GCE has been evaluated towards the voltammetric sensing of ketoconazole (KTO), a widespread antifungal drug. The nanocomposite was characterized by scanning electron microscopy, X-ray diffraction spectroscopy, and electrochemistry experiments. The evaluation of the electrochemical behaviour of KTO on the proposed modified electrode shows an irreversible oxidation process at a potential of +0.65 V (vs. Ag/AgCl (3.0 mol L-1 KCl)). This redox process was explored to carry out KTO sensing using square-wave voltammetry. The analytical curve was linear in the KTO concentration range from 0.10 to 2.9 μmol L-1, with a limit of detection (LOD) of 4.4 nmol L-1 and a sensitivity of 3.6 μA L μmol-1. This modified electrode was successfully applied to the determination of KTO in pharmaceutical formulations and biological fluid samples.
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Affiliation(s)
- Laís Pereira Silva
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo, 13560-970, Brazil.
| | - Tiago Almeida Silva
- Department of Chemistry, Federal University of Viçosa, Minas Gerais, 36570-900, Brazil
| | - Fernando Cruz Moraes
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo, 13560-970, Brazil.
| | - Orlando Fatibello-Filho
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo, 13560-970, Brazil.
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