1
|
Worku LA, Tadesse MG, Bachheti RK, Bachheti A, Husen A. Synthesis of carboxylated cellulose nanocrystal/ZnO nanohybrids using Oxytenanthera abyssinica cellulose and zinc nitrate hexahydrate for radical scavenging, photocatalytic, and antibacterial activities. Int J Biol Macromol 2024; 267:131228. [PMID: 38554923 DOI: 10.1016/j.ijbiomac.2024.131228] [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: 12/07/2023] [Revised: 02/05/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
The extremely low antioxidant, photocatalytic, and antibacterial properties of cellulose limit its application in the biomedical and environmental sectors. To improve these properties, nanohybrides were prepared by mixing carboxylated cellulose nanocrystals (CCNCs) and zinc nitrate hexahydrate. Data from FTIR, XRD, DLS, and SEM spectra showed that, ZnO nanoparticles, with a size ranging from 94 to 351 nm and the smallest nanoparticle size of 164.18 nm, were loaded onto CCNCs. CCNCs/ZnO1 nanohybrids demonstrated superior antibacterial, photocatalytic, and antioxidant performance. More considerable antibacterial activity was shown with a zone of inhibition ranging from 26.00 ± 1.00 to 40.33 ± 2.08 mm and from 31.66 ± 3.51 to 41.33 ± 1.15 mm against Gram-positive and Gram-negative bacteria, respectively. Regarding photodegradation properties, the maximum value (∼91.52 %) of photocatalytic methylene blue degradation was observed after 75 min exposure to a UV lamp. At a concentration of 125.00 μm/ml of the CCNC/ZnO1 nanohybrids sample, 53.15 ± 1.03 % DPPH scavenging activity was obtained with an IC50 value of 117.66 μm/ml. A facile, cost-effective, one-step synthesis technique was applied to fabricate CCNCs/ZnO nanohybrids at mild temperature using Oxytenanthera abyssinica carboxylated cellulose nanocrystals as biotemplate. The result showed that CCNCs/ZnO nanohybrids possess potential applications in developing advanced functional materials for dye removal and antibacterial and antioxidant applications.
Collapse
Affiliation(s)
- Limenew Abate Worku
- Debre Tabor University, College of Natural and Computational Science, Department of Chemistry, Debre Tabor, Ethiopia
| | - Mesfin Getachew Tadesse
- Department of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, P.O. Box: 16417, Addis Ababa, Ethiopia
| | - Rakesh Kumar Bachheti
- Department of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, P.O. Box: 16417, Addis Ababa, Ethiopia; Department of Allied Sciences, Graphic Era Hill University, Society Area, Clement Town, Dehradun 248002, Uttarakhand, India.
| | - Archana Bachheti
- Department of Environment Science, Graphic Era (Deemed to be University), Dehradun 248002, Uttarakhand, India
| | - Azamal Husen
- Department of Biotechnology, Smt. S. S. Patel Nootan Science & Commerce College, Sankalchand Patel University, Visnagar 384315, Gujarat, India; Department of Biotechnology, Graphic Era (Deemed to be University), Dehradun 248002, Uttarakhand, India; Wolaita Sodo University, PO Box 138, Wolaita, Ethiopia
| |
Collapse
|
2
|
Effect of microwave power on bactericidal and UV protection properties of the ZnO nanorods grown cotton fabrics. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
|
3
|
Azizan A, Samsudin AA, Shamshul Baharin MB, Dzulkiflee MH, Rosli NR, Abu Bakar NF, Adlim M. Cellulosic fiber nanocomposite application review with zinc oxide antimicrobial agent nanoparticle: an opt for COVID-19 purpose. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:16779-16796. [PMID: 35084685 PMCID: PMC8793331 DOI: 10.1007/s11356-022-18515-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/01/2022] [Indexed: 05/08/2023]
Abstract
Cellulosic fiber (CF) in nanoform is emergingly finding its way for COVID-19 solution for instance via nanocomposite/nanoparticle from various abundant biopolymeric waste materials, which may not be widely commercialized when the pandemic strikes recently. The possibility is wide open but needs proper collection of knowledge and research data. Thus, this article firstly reviews CF produced from various lignocellulosic or biomass feedstocks' pretreatment methods in various nanoforms or nanocomposites, also serving together with metal oxide (MeO) antimicrobial agents having certain analytical reporting. CF-MeO hybrid product can be a great option for COVID-19 antimicrobial resistant environment to be proposed considering the long-established CF and MeO laboratory investigations. Secondly, a preliminary pH investigation of 7 to 12 on zinc oxide synthesis discussing on Fouriertransform infrared spectroscopy (FTIR) functional groups and scanning electron microscope (SEM) images are also presented, justifying the knowledge requirement for future stable nanocomposite formulation. In addition to that, recent precursors suitable for zinc oxide nanoparticle synthesis with emergingly prediction to serve as COVID-19 purposes via different products, aligning with CFs or nanocellulose for industrial applications are also reviewed.
Collapse
Affiliation(s)
- Amizon Azizan
- School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia.
| | - Aisyah Afiqah Samsudin
- School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
| | | | - Muhammad Harith Dzulkiflee
- School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
| | - Nor Roslina Rosli
- School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
| | - Noor Fitrah Abu Bakar
- School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
| | - Muhammad Adlim
- Graduate School of Mathematics and Applied Science, Universitas Syiah Kuala, 23111 Darussalam Banda Aceh, Kuala, Indonesia
- Chemistry Department, FKIP, Universitas Syiah Kuala, 23111 Darussalam Banda Aceh, Kuala, Indonesia
| |
Collapse
|
4
|
Javed A, Wiener J, Saskova J, Müllerová J. Zinc Oxide Nanoparticles (ZnO NPs) and N-Methylol Dimethyl Phosphonopropion Amide (MDPA) System for Flame Retardant Cotton Fabrics. Polymers (Basel) 2022; 14:3414. [PMID: 36015672 PMCID: PMC9416732 DOI: 10.3390/polym14163414] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 11/20/2022] Open
Abstract
The aim of the present research work was to develop halogen and formaldehyde-free, durable flame retardant fabric along with multifunctional properties and to find the optimal conditions and parameters. In this research, zinc oxide nanoparticles (ZnO NPs) were grown onto 100% cotton fabric using the sonochemical method. Zinc acetate dihydrate (Zn(CH3COO)2·2H2O) and sodium hydroxide (NaOH) were used as precursors. After ZnO NPs growth, N-Methylol dimethylphosphonopropionamide (MDPA) flame retardant was applied in the presence of 1, 2, 3, 4-butanetetracarboxylic acid (BTCA) as cross-linkers using the conventional pad-dry-cure method. Induced coupled plasma atomic emission spectroscopy (ICP-AES) was used to determine the deposited amount of Zn and phosphorous (P) contents. Scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR) were employed to determine the surface morphology and characterization of the developed samples. Furthermore, the thermal degradation of the untreated and treated samples was investigated by thermogravimetric analysis (TGA). Furthermore, the vertical flame retardant test, limiting oxygen index (LOI), ultraviolet protection factor (UPF), and antibacterial activity of samples were examined. The developed samples showed excellent results for flame retardancy (i.e., 39 mm char length, 0 s after flame time, 0 s after glow time), 32.2 LOI, 143.76 UPF, and 100% antibacterial activity.
Collapse
Affiliation(s)
- Asif Javed
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic
| | - Jakub Wiener
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic
| | - Jana Saskova
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic
| | - Jana Müllerová
- Department of Nanochemistry, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic
| |
Collapse
|
5
|
Salama A, Abouzeid R, Leong WS, Jeevanandam J, Samyn P, Dufresne A, Bechelany M, Barhoum A. Nanocellulose-Based Materials for Water Treatment: Adsorption, Photocatalytic Degradation, Disinfection, Antifouling, and Nanofiltration. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3008. [PMID: 34835769 PMCID: PMC8620168 DOI: 10.3390/nano11113008] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/22/2021] [Accepted: 10/27/2021] [Indexed: 12/11/2022]
Abstract
Nanocelluloses are promising bio-nano-materials for use as water treatment materials in environmental protection and remediation. Over the past decades, they have been integrated via novel nanoengineering approaches for water treatment processes. This review aims at giving an overview of nanocellulose requirements concerning emerging nanotechnologies of waster treatments and purification, i.e., adsorption, absorption, flocculation, photocatalytic degradation, disinfection, antifouling, ultrafiltration, nanofiltration, and reverse osmosis. Firstly, the nanocellulose synthesis methods (mechanical, physical, chemical, and biological), unique properties (sizes, geometries, and surface chemistry) were presented and their use for capturing and removal of wastewater pollutants was explained. Secondly, different chemical modification approaches surface functionalization (with functional groups, polymers, and nanoparticles) for enhancing the surface chemistry of the nanocellulose for enabling the effective removal of specific pollutants (suspended particles, microorganisms, hazardous metals ions, organic dyes, drugs, pesticides fertilizers, and oils) were highlighted. Thirdly, new fabrication approaches (solution casting, thermal treatment, electrospinning, 3D printing) that integrated nanocelluloses (spherical nanoparticles, nanowhiskers, nanofibers) to produce water treatment materials (individual composite nanoparticles, hydrogels, aerogels, sponges, membranes, and nanopapers) were covered. Finally, the major challenges and future perspectives concerning the applications of nanocellulose based materials in water treatment and purification were highlighted.
Collapse
Affiliation(s)
- Ahmed Salama
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt; (A.S.); (R.A.)
| | - Ragab Abouzeid
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt; (A.S.); (R.A.)
- University of Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France;
| | - Wei Sun Leong
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore;
| | - Jaison Jeevanandam
- CQM—Centro de Química da Madeira, MMRG, Campus da Penteada, Universidade da Madeira, 9020-105 Funchal, Portugal;
| | - Pieter Samyn
- Institute for Materials Research (MO-IMOMEC), Applied and Analytical Chemistry, University of Hasselt, B-3590 Diepenbeek, Belgium;
| | - Alain Dufresne
- University of Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France;
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France
| | - Ahmed Barhoum
- NanoStruc Research Group, Chemistry Department, Faculty of Science, Helwan University, Cairo, Helwan 11795, Egypt
- School of Chemical Sciences, Dublin City University, Dublin 9, D09 Y074 Dublin, Ireland
| |
Collapse
|
6
|
Role of Hybrid Nano-Zinc Oxide and Cellulose Nanocrystals on the Mechanical, Thermal, and Flammability Properties of Poly (Lactic Acid) Polymer. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5020043] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biopolymers with universal accessibility and inherent biodegradability can offer an appealing sustainable platform to supersede petroleum-based polymers. In this research, a hybrid system derived from cellulose nanocrystals (CNCs) and zinc oxide (ZnO) nanoparticles was added into poly (lactic acid) (PLA) to improve its mechanical, thermal, and flame resistance properties. The ZnO-overlaid CNCs were prepared via the solvent casting method and added to PLA through the melt-blending extrusion process. The composite properties were evaluated using SEM, a dynamic mechanical analyzer (DMA), FTIR TGA, and horizontal burning tests. The results demonstrated that the incorporation of 1.5% nano-CNC-overlaid ZnO nanoparticles into PLA enhanced the mechanical and thermal characteristics and the flame resistance of the PLA matrix. Oxidative combustion of CNC-ZnO promoted char formation and flame reduction. The shielding effect from the ZnO-CNC blend served as an insulator and resulted in noncontinuous burning, which increased the fire retardancy of nanocomposites. By contrast, the addition of ZnO into PLA accelerated the polymer degradation at higher temperature and shifted the maximum degradation to lower temperature in comparison with pure PLA. For PLA composites reinforced by ZnO, the storage modulus decreased with ZnO content possibly due to the scissoring effect of ZnO in the PLA matrix, which resulted in lower molecular weight.
Collapse
|
7
|
Vahidi G, Bajwa DS, Shojaeiarani J, Stark N, Darabi A. Advancements in traditional and nanosized flame retardants for polymers—A review. J Appl Polym Sci 2020. [DOI: 10.1002/app.50050] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ghazal Vahidi
- Department of Mechanical and Industrial Engineering Montana State University Bozeman Montana USA
| | - Dilpreet S. Bajwa
- Department of Mechanical and Industrial Engineering Montana State University Bozeman Montana USA
| | - Jamileh Shojaeiarani
- Mechanical Engineering Department Western New England University Springfield Massachusetts USA
| | - Nicole Stark
- Engineered Composites Science USDA Forest Service, Forest Products Laboratory Madison Wisconsin USA
| | - Amir Darabi
- Department of Mechanical and Industrial Engineering Montana State University Bozeman Montana USA
| |
Collapse
|
8
|
Cellulose from sources to nanocellulose and an overview of synthesis and properties of nanocellulose/zinc oxide nanocomposite materials. Int J Biol Macromol 2020; 154:1050-1073. [PMID: 32201207 DOI: 10.1016/j.ijbiomac.2020.03.163] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/16/2020] [Accepted: 03/16/2020] [Indexed: 01/16/2023]
Abstract
Recently, environmental and ecological concerns are increasing due to the usage of petroleum-based products so the synthesis of ultra-fine chemicals and functional materials from natural resources is drawing a tremendous level of attention. Nanocellulose, a unique and promising natural material extracted from native cellulose, may prove to be most ecofriendly materials that are technically and economically feasible in modern times, minimizing the pollution generation. Nanocellulose has gained tremendous attention for its use in various applications, due to its excellent special surface chemistry, physical properties, and remarkable biological properties (biodegradability, biocompatibility, and non-toxicity). Various types of nanocellulose, viz. cellulose nanofibrils (CNFs), cellulose nanocrystals (CNCs), and bacterial nanocellulose (BNC), are deeply introduced and compared in this work in terms of sources, production, structures and properties. The metal and metal oxides especially zinc oxide nanoparticles (ZnO-NPs) are broadly used in various fields due to the diversity of functional properties such as antimicrobial and ultraviolet (UV) properties. Thus, the advancement of nanocellulose and zinc oxide nanoparticles (ZnO-NPs)-based composites materials are summarized in this article in terms of the preparation methods and remarkable properties with the help of recent knowledge and significant findings (especially from the past six years reports). The nanocellulose materials complement zinc oxide nanoparticles, where they impart their functional properties to the nanoparticle composites. As a result hybrid nanocomposite containing nanocellulose/zinc oxide composite has shown excellent mechanical, UV barrier, and antibacterial properties. The nanocellulose based hybrid nanomaterials have huge potential applications in the area of food packaging, biopharmaceuticals, biomedical, and cosmetics. Thus the functional composite materials containing nanocellulose and zinc oxide will determine the potential biomedical application for nanocellulose.
Collapse
|
9
|
Nageswara Rao T, Naidu TM, Kim MS, Parvatamma B, Prashanthi Y, Heun Koo B. Influence of Zinc Oxide Nanoparticles and Char Forming Agent Polymer on Flame Retardancy of Intumescent Flame Retardant Coatings. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 10:E42. [PMID: 31878012 PMCID: PMC7022803 DOI: 10.3390/nano10010042] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 11/24/2022]
Abstract
Zinc oxide nanoparticles (ZnO NPs) were synthesized by a precipitation method, and a new charring-foaming agent (CFA) N-ethanolamine triazine-piperazine, melamine polymer (ETPMP) was synthesized via nucleophilic substitution reaction by using cyanuric chloride, ethanolamine, piperazine, and melamine as precursor molecules. FTIR and energy-dispersive X-ray spectroscopy (EDS) studies were employed to characterize and confirm the synthesized ETPMP structure. New intumescent flame retardant epoxy coating compositions were prepared by adding ammonium polyphosphate (APP), ETPMP, and ZnO NPs into an epoxy resin. APP and ETPMP were fixed in a 2:1 w/w ratio and used as an intumescent flame-retardant (IFR) system. ZnO NPs were loaded as a synergistic agent in different amounts into the IFR coating system. The synergistic effects of ZnO NPs on IFR coatings were systematically evaluated by limited oxygen index (LOI) tests, vertical burning tests (UL-94 V), TGA, cone calorimeter tests, and SEM. The obtained results revealed that a small amount of ZnO NPs significantly increased the LOI values of the IFR coating and these coatings had a V-0 ratings in UL-94 V tests. From the TGA data, it is clear that the addition of ZnO NPs could change the thermal degradation behaviors of coatings with increasing char residue percentage at high temperatures. Cone calorimeter data reported that ZnO NPs could decrease the combustion parameters including peak heat release rates (PHRRs), and total heat release (THR) rates. The SEM results showed that ZnO NPs could enhance the strength and the compactness of the intumescent char, which restricted the flow of heat and oxygen.
Collapse
Affiliation(s)
- Tentu Nageswara Rao
- School of Materials Science and Engineering, Changwon National University, Changwon 51140, Gyeongnam, Korea; (T.N.R.); (M.S.K.)
| | - T. Manohra Naidu
- Department of Nuclear Physics, Andhra University, Visakhapatnam 530003, Andhra Pradesh, India;
| | - Min Soo Kim
- School of Materials Science and Engineering, Changwon National University, Changwon 51140, Gyeongnam, Korea; (T.N.R.); (M.S.K.)
| | - Botsa Parvatamma
- Department of Organic Chemistry, Gayathri P.G Courses, Gotlam, Vizianagaram, AP 535003, India;
| | - Y. Prashanthi
- Department of Chemistry, Mahatma Gandhi University, Nalgonda 508254, Telangana, India;
| | - Bon Heun Koo
- School of Materials Science and Engineering, Changwon National University, Changwon 51140, Gyeongnam, Korea; (T.N.R.); (M.S.K.)
| |
Collapse
|
10
|
Bajwa DS, Rehovsky C, Shojaeiarani J, Stark N, Bajwa S, Dietenberger MA. Functionalized Cellulose Nanocrystals: A Potential Fire Retardant for Polymer Composites. Polymers (Basel) 2019; 11:polym11081361. [PMID: 31426592 PMCID: PMC6722989 DOI: 10.3390/polym11081361] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 11/24/2022] Open
Abstract
The flammability of synthetic thermoplastic polymers has been recognized as an increasingly important safety problem. The goal of this study was to evaluate a green and safe fire-retardant system comprising of cellulose nanocrystals (CNC) and zinc oxide nanoparticles (ZnO). CNCs coated with nano ZnO were incorporated in the high-density polyethylene polymer (HDPE) matrix at different concentrations. Fire testing results of different formulations of HDPE containing 0.4 to 1.0% zinc oxide coated CNC exhibited a substantial decrease in the average mass loss, peak heat release rate and total smoke release. The time to ignition exhibited a positive correlation with CNC-ZnO concentration. Modest improvement in the flexural strength and moduli of composites was noticed validating no adverse effects of CNC-ZnO complex. The transmission electron microscopy further confirmed dispersion of nanoparticles as well as the presence of some nanoparticle aggregates in the matrix. The uniform dispersion of CNC-ZnO complex is expected to further improve fire and mechanical properties of polymer.
Collapse
Affiliation(s)
- Dilpreet S Bajwa
- Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT 59717, USA.
| | - Chad Rehovsky
- Department of Mechanical Engineering, North Dakota State University, Fargo, ND 58108, USA
| | - Jamileh Shojaeiarani
- Mechanical Engineering Department, Western New England University, Springfield, MA 01119, USA
| | - Nicole Stark
- USDA Forest Service, Forest Products Laboratory, Madison, WI 53726, USA
| | - Sreekala Bajwa
- College of Agriculture, Montana State University, Bozeman, MT 59717, USA
| | | |
Collapse
|
11
|
Keerthi Krishnan K, Ujwaldev SM, Saranya S, Anilkumar G, Beller M. Recent Advances and Perspectives in the Synthesis of Heterocycles
via
Zinc Catalysis. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800868] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- K. Keerthi Krishnan
- School of Chemical SciencesMahatma Gandhi University Priyadarsini Hills P O Kottayam 686 560 India
| | | | - Salim Saranya
- School of Chemical SciencesMahatma Gandhi University Priyadarsini Hills P O Kottayam 686 560 India
| | - Gopinathan Anilkumar
- School of Chemical SciencesMahatma Gandhi University Priyadarsini Hills P O Kottayam 686 560 India
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT Rostock) Albert-Einstein Straße 29a 18059 Rostock Germany
| |
Collapse
|
12
|
Norouzi M, Zare Y, Kiany P. Nanoparticles as Effective Flame Retardants for Natural and Synthetic Textile Polymers: Application, Mechanism, and Optimization. POLYM REV 2015. [DOI: 10.1080/15583724.2014.980427] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
13
|
Effects of TiO 2 and curing temperatures on flame retardant finishing of cotton. Carbohydr Polym 2015; 121:457-67. [DOI: 10.1016/j.carbpol.2014.11.064] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 10/23/2014] [Accepted: 11/25/2014] [Indexed: 10/24/2022]
|
14
|
Mohaqeq M, Safaei-Ghomi J. A flexible one-pot synthesis of 8,10-dimethyl-12-aryl-9H-naphto[1′,2′:5,6]pyrano[2,3-d]pyrimidine-9,11-diones catalyzed by ZnO nanoparticles under solvent-free conditions. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1411-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
15
|
Safaei-Ghomi J, Heidari-Baghbahadorani E, Shahbazi-Alavi H, Asgari-Kheirabadi M. A comparative study of the catalytic activity of nanosized oxides in the one-pot synthesis of highly substituted dihydropyridines. RSC Adv 2015. [DOI: 10.1039/c4ra14557g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A flexible and highly efficient protocol for the synthesis of highly substituted dihydropyridines using nano CeO2 has been developed.
Collapse
Affiliation(s)
- Javad Safaei-Ghomi
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Kashan
- Kashan
- Islamic Republic of Iran
| | | | - Hossein Shahbazi-Alavi
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Kashan
- Kashan
- Islamic Republic of Iran
| | | |
Collapse
|
16
|
Fang Z, Wang C, Fan F, Hao S, Long L, Song Y, Qiang T. Phase Evolution of CuS System in Ethylene Glycol Solution: the Effect of Anion and PVP on the Transformation of Thiourea. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300200] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
17
|
Safaei-Ghomi J, Ghasemzadeh MA. Zinc oxide nanoparticles: A highly efficient and readily recyclable catalyst for the synthesis of xanthenes. CHINESE CHEM LETT 2012. [DOI: 10.1016/j.cclet.2012.09.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|