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Teodorescu GM, Vuluga Z, Ioniță A, Nicolae CA, Ghiurea M, Gabor AR, Rădițoiu V, Raduly M, Brezeştean IA, Marconi D, Turcu I. Morphological, Thermal, and Mechanical Properties of Nanocomposites Based on Bio-Polyamide and Feather Keratin-Halloysite Nanohybrid. Polymers (Basel) 2024; 16:2003. [PMID: 39065320 PMCID: PMC11280597 DOI: 10.3390/polym16142003] [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: 06/18/2024] [Revised: 07/07/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
One solution to comply with the strict regulations of the European Commission and reduce the environmental footprint of composites is the use of composite materials based on bio-polymers and fillers from natural resources. The aim of our work was to obtain and analyze the properties of bio-polymer nanocomposites based on bio-PA (PA) and feather keratin-halloysite nanohybrid. Keratin (KC) was mixed with halloysite (H) as such or with the treated surface under dynamic conditions, resulting in two nanohybrids: KCHM and KCHE. The homogenization of PA with the two nanohybrids was conducted using the extrusion processing process. Two types of nanocomposites, PA-KCHM and PA-KCHE, with 5 wt.% KC and 1 wt.% H were obtained. The properties were analyzed using SEM, XRD, FTIR, RAMAN, TGA, DSC, tensile/impact tests, DMA, and nanomechanical tests. The best results were obtained for PA-KCHE due to the stronger interaction between the components and the uniform dispersion of the nanohybrid in the PA matrix. Improvements in the modulus of elasticity and of the surface hardness by approx. 75% and 30%, respectively, and the resistance to scratch were obtained. These results are promising and constitute a possible alternative to synthetic polymer composites for the automotive industry.
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Affiliation(s)
- George Mihail Teodorescu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Zina Vuluga
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Andreea Ioniță
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Cristian Andi Nicolae
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Marius Ghiurea
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Augusta Raluca Gabor
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Valentin Rădițoiu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Monica Raduly
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (G.M.T.); (A.I.); (C.A.N.); (M.G.); (A.R.G.); (V.R.); (M.R.)
| | - Ioana Andreea Brezeştean
- Department of Molecular and Biomolecular Physics, National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donath, 400296 Cluj-Napoca, Romania; (I.A.B.); (D.M.); (I.T.)
| | - Daniel Marconi
- Department of Molecular and Biomolecular Physics, National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donath, 400296 Cluj-Napoca, Romania; (I.A.B.); (D.M.); (I.T.)
| | - Ioan Turcu
- Department of Molecular and Biomolecular Physics, National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donath, 400296 Cluj-Napoca, Romania; (I.A.B.); (D.M.); (I.T.)
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Silva PAP, Oréfice RL. Bio-sorbent from castor oil polyurethane foam containing cellulose-halloysite nanocomposite for removal of manganese, nickel and cobalt ions from water. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131433. [PMID: 37146336 DOI: 10.1016/j.jhazmat.2023.131433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/31/2023] [Accepted: 04/15/2023] [Indexed: 05/07/2023]
Abstract
In order to mitigate the contamination of water with heavy metals, caused by mining dam failures in Brumadinho and Mariana in Brazil, eco-friendly bio-based castor oil polyurethane foams, containing a cellulose-halloysite green nanocomposite were prepared. Polyurethane foams containing none (PUF-0), 5%wt (PUF-5), and 10%wt (PUF-10) of the nanocomposite were obtained. The application of the material in aqueous media was verified through an investigation of the efficiency of adsorption, the adsorption capacity, and the adsorption kinetics in pH= 2 and pH= 6.5 for manganese, nickel, and cobalt ions. An increase of 5.47 times in manganese adsorption capacity was found after only 30 min in contact with a solution having this ion at pH= 6.5 for PUF-5 and 11.38 times for PUF-10 when both were compared with PUF-0. Adsorption efficiency was respectively 68.17% at pH= 2 for PUF-5% and 100% for PUF-10 after 120 h, while for the control foam, PUF-0, the adsorption efficiency was only 6.90%.
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Affiliation(s)
- Philipe Augusto Pocidonio Silva
- Department of Metallurgical, Materials Engineering, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Campus da UFMG, Pampulha, Belo Horizonte, MG, Brazil
| | - Rodrigo Lambert Oréfice
- Department of Metallurgical, Materials Engineering, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Campus da UFMG, Pampulha, Belo Horizonte, MG, Brazil.
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Poly(ethyl methacrylate) Composite Coatings Containing Halogen-Free Inorganic Additives with Flame-Retardant Properties. JOURNAL OF COMPOSITES SCIENCE 2022. [DOI: 10.3390/jcs6040104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
This investigation is motivated by the need for the development of polymer coatings containing inorganic flame-retardant materials (FRMs) and the replacement of toxic halogenated FRMs. A green strategy is reported for the fabrication of poly(ethyl methacrylate) (PEMA)-FRM composite coatings using a dip-coating method. The use of water-isopropanol co-solvent allows the replacement of regular toxic solvents for PEMA. The abilities to form concentrated solutions of high-molecular-mass PEMA and to disperse FRM particles in such solutions are the main factors in the fabrication of coatings using a dip-coating technique. Huntite, halloysite, and hydrotalcite are used as advanced FRMs for the fabrication of PEMA-FRM coatings. FTIR, XRD, SEM, and TGA data are used for the analysis of the microstructure and composition of PEMA-FRM coatings. PEMA and PEMA-FRM coatings provide corrosion protection of stainless steel. The ability to form laminates with different layers using a dip-coating method facilitates the fabrication of composite coatings with enhanced properties.
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Arora B, Sharma S, Dutta S, Sharma A, Yadav S, Rana P, Rana P, Sharma RK. A sustainable gateway to access 1,8-dioxo-octahydroxanthene scaffolds via a surface-engineered halloysite-based magnetically responsive catalyst. NEW J CHEM 2022. [DOI: 10.1039/d1nj05509g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A covalently modified, surface-engineered Cu(ii)@DCH@CPTMS@MHNT nanocatalyst is synthesized, which showed incredible catalytic activity in accessing a library of xanthene scaffolds.
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Affiliation(s)
- Bhavya Arora
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Shivani Sharma
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Sriparna Dutta
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Aditi Sharma
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Sneha Yadav
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Pooja Rana
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Pooja Rana
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - R. K. Sharma
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
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Wu Y, Su M, Xiao Y, Guang B, Liu Y. Heteropolyacid-Based Poly(ionic liquid)s for the Selective Oxidation of Cyclohexene to 2-Cyclohexene-1-one. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c04108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuefeng Wu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
- Henan Engineering Research Center of Resource & Energy Recovery from Waste, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
| | - Miaojun Su
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
- Henan Engineering Research Center of Resource & Energy Recovery from Waste, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
| | - Yahui Xiao
- Henan Engineering Research Center of Resource & Energy Recovery from Waste, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
| | - Binxiong Guang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
- Henan Engineering Research Center of Resource & Energy Recovery from Waste, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
| | - Yong Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
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Synergetic photocatalytic-activity enhancement of lanthanum doped TiO2 on halloysite nanocomposites for degradation of organic dye. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.05.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Ponchai P, Adpakpang K, Bureekaew S. Selective cyclohexene oxidation to allylic compounds over a Cu-triazole framework via homolytic activation of hydrogen peroxide. Dalton Trans 2021; 50:7917-7921. [PMID: 33969847 DOI: 10.1039/d1dt00227a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Utilization of metal-organic frameworks as heterogeneous catalysts is crucial owing to their abundant catalytic sites and well-defined porous structures. Highly robust [Cu3(trz)3(μ3-OH)(OH)2(H2O)4]·2H2O (trz = 1,2,4-triazole) was employed as a catalyst for liquid-phase cyclohexene oxidation with hydrogen peroxide (H2O2). Possessing the porous structure together with Lewis acid attributes from the triangular [Cu3(trz)3(μ3-OH)] center, selective oxidation of cyclohexene to allylic products gives a molar yield of 31% with 87% selectivity. According to the highly selective allylic production, the reaction over the present Cu-MOF plausibly occurs via homolytic activation of H2O2. This finding elucidates the unique features of the MOF for efficient catalysis of cyclohexene oxidation.
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Affiliation(s)
- Panyapat Ponchai
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand.
| | - Kanyaporn Adpakpang
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand.
| | - Sareeya Bureekaew
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand. and Research Network of NANOTEC-VISTEC on Nanotechnology for Energy, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
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Piccirilli F, Tardani F, D’Arco A, Birarda G, Vaccari L, Sennato S, Casciardi S, Lupi S. Infrared Nanospectroscopy Reveals DNA Structural Modifications upon Immobilization onto Clay Nanotubes. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1103. [PMID: 33923331 PMCID: PMC8147086 DOI: 10.3390/nano11051103] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 12/22/2022]
Abstract
The growing demand for innovative means in biomedical, therapeutic and diagnostic sciences has led to the development of nanomedicine. In this context, naturally occurring tubular nanostructures composed of rolled sheets of alumino-silicates, known as halloysite nanotubes, have found wide application. Halloysite nanotubes indeed have surface properties that favor the selective loading of biomolecules. Here, we present the first, to our knowledge, structural study of DNA-decorated halloysite nanotubes, carried out with nanometric spatially-resolved infrared spectroscopy. Single nanotube absorption measurements indicate a partial covering of halloysite by DNA molecules, which show significant structural modifications taking place upon loading. The present study highlights the constraints for the use of nanostructured clays as DNA carriers and demonstrates the power of super-resolved infrared spectroscopy as an effective and versatile tool for the evaluation of immobilization processes in the context of drug delivery and gene transfer.
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Affiliation(s)
| | - Franco Tardani
- Istituto dei Sistemi Complessi (ISC)-CNR, UOS Roma Sapienza, 00185 Roma, Italy; (F.T.); (S.S.)
| | - Annalisa D’Arco
- Dipartimento di Fisica, “La Sapienza” Universitá di Roma, 00185 Roma, Italy;
- National Institute of Nuclear Physics Section Rome, P.le A. Moro 2, 00185 Roma, Italy
| | - Giovanni Birarda
- Elettra Sincrotrone Trieste, 34149 Trieste, Italy; (G.B.); (L.V.)
| | - Lisa Vaccari
- Elettra Sincrotrone Trieste, 34149 Trieste, Italy; (G.B.); (L.V.)
| | - Simona Sennato
- Istituto dei Sistemi Complessi (ISC)-CNR, UOS Roma Sapienza, 00185 Roma, Italy; (F.T.); (S.S.)
- Dipartimento di Fisica, “La Sapienza” Universitá di Roma, 00185 Roma, Italy;
| | - Stefano Casciardi
- Dipartimento di Medicina, Epidemiologia, Igiene del Lavoro e Ambientale, Istituto Nazionale per l’Assicurazione Contro gli Infortuni sul Lavoro, 00100 Roma, Italy;
| | - Stefano Lupi
- Istituto Officina dei Materiali CNR, 34149 Trieste, Italy;
- Dipartimento di Fisica, “La Sapienza” Universitá di Roma, 00185 Roma, Italy;
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Kesavan G, Chen S. Manganese oxide anchored on carbon modified halloysite nanotubes: An electrochemical platform for the determination of chloramphenicol. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126243] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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10
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Li X, Wang Z, Sakib S, Mathews R, Zhitomirsky I. Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol. Molecules 2021; 26:1974. [PMID: 33807421 PMCID: PMC8037898 DOI: 10.3390/molecules26071974] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/20/2021] [Accepted: 03/26/2021] [Indexed: 11/16/2022] Open
Abstract
A dip-coating technique is designed for deposition of poly(methyl methacrylate) (PMMA) from water/2-propanol mixture, avoiding the use of traditional toxic solvents. Solutions of PMMA macromolecules with high molecular weight (MW) are obtained for a water/2-propanol ratio of 0.15-0.33 and the solubilization mechanism is discussed. The ability to use concentrated PMMA solutions and high MW of the polymer are the key factors for the successful dip coating deposition. The coating mass for 10 g L-1 polymer solutions shows a maximum at a water/2-propanol ratio of 0.25. The deposition yield increases with the polymer concentration increase and with an increasing number of the deposited layers. PMMA deposits protect stainless steel from aqueous corrosion. The coating technique allows for the fabrication of composite coatings, containing flame-retardant materials (FRMs), such as commercial halloysite, huntite, hydrotalcite, and synthesized Al(OH)3, in the PMMA matrix. The FRM content in the coatings is modified by variation of the FRM content in colloidal suspensions. A fundamentally new method is developed, which is based on the salting out aided dispersive extraction of Al(OH)3 from the aqueous synthesis medium to 2-propanol. It is based on the use of hexadecylphosphonic acid molecules as extractors. The method offers advantages of reduced agglomeration.
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Affiliation(s)
- Xuelin Li
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S4L7, Canada; (X.L.); wangz338mcmaster.ca (Z.W.)
| | - Zhengzheng Wang
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S4L7, Canada; (X.L.); wangz338mcmaster.ca (Z.W.)
| | - Sadman Sakib
- Department of Engineering Physics, McMaster University, Hamilton, ON L8S4L7, Canada;
| | - Ritch Mathews
- Advanced Ceramics Corporation, 2536 Bristol Circle, Oakville, ON L6H5S1, Canada;
| | - Igor Zhitomirsky
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S4L7, Canada; (X.L.); wangz338mcmaster.ca (Z.W.)
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Duan M, Wang X, Peng W, Liu D, Cheng Q, Yang Q. Co(II) Schiff Base Complex Supported on Nano‐Silica for the Aerobic Oxidation of Cyclohexene: Reaction Pathways and Overoxidation on the Experimental and Calculated Mechanism. ChemistrySelect 2021. [DOI: 10.1002/slct.202004676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mingxing Duan
- College of Chemical Engineering Hebei University of Technology Key Laboratory of Green Chemical Technology and High Efficient Energy Saving of Hebei Province and Tianjin Key Laboratory of Chemical Process Safety Tianjin 300131 China
| | - Xinguo Wang
- College of Chemical Engineering Hebei University of Technology Key Laboratory of Green Chemical Technology and High Efficient Energy Saving of Hebei Province and Tianjin Key Laboratory of Chemical Process Safety Tianjin 300131 China
| | - Wenjing Peng
- College of Chemical Engineering Hebei University of Technology Key Laboratory of Green Chemical Technology and High Efficient Energy Saving of Hebei Province and Tianjin Key Laboratory of Chemical Process Safety Tianjin 300131 China
| | - Dongjie Liu
- College of Chemical Engineering Hebei University of Technology Key Laboratory of Green Chemical Technology and High Efficient Energy Saving of Hebei Province and Tianjin Key Laboratory of Chemical Process Safety Tianjin 300131 China
| | - Qingyan Cheng
- College of Chemical Engineering Hebei University of Technology Key Laboratory of Green Chemical Technology and High Efficient Energy Saving of Hebei Province and Tianjin Key Laboratory of Chemical Process Safety Tianjin 300131 China
| | - Qiusheng Yang
- College of Chemical Engineering Hebei University of Technology Key Laboratory of Green Chemical Technology and High Efficient Energy Saving of Hebei Province and Tianjin Key Laboratory of Chemical Process Safety Tianjin 300131 China
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Wang J, Quan Y, Wang G, Wang D, Xiao J, Gao S, Xu H, Liu S, Cui L. 3D hollow cage copper cobalt sulfide derived from metal–organic frameworks for high-performance asymmetric supercapacitors. CrystEngComm 2021. [DOI: 10.1039/d1ce00884f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The fabrication of the advanced MOF-based 3D hollow cage ternary bimetallic material CuCo2S4 for high performance asymmetric supercapacitors.
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Affiliation(s)
- Jiaqi Wang
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Yiling Quan
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Guoxiang Wang
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Dazhi Wang
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Jie Xiao
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Shiping Gao
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Hongfeng Xu
- Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian 116028, PR China
| | - Sa Liu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - Li Cui
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
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Porphyrin–Nanodiamond Hybrid Materials—Active, Stable and Reusable Cyclohexene Oxidation Catalysts. Catalysts 2020. [DOI: 10.3390/catal10121402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The quest for active, yet “green” non-toxic catalysts is a continuous challenge. In this work, covalently linked hybrid porphyrin–nanodiamonds were prepared via ipso nitro substitution reaction and characterized by X-ray photoelectron spectroscopy (XPS), fluorescence spectroscopy, infrared spectroscopy (IR) and thermogravimetry-differential scanning calorimetry (TG-DSC). The amine-functionalized nanodiamonds (ND@NH2) and 2-nitro-5,10,15,20-tetra(4-trifluoromethylphenyl)porphyrin covalently linked to nanodiamonds (ND@βNH-TPPpCF3) were tested using Allium cepa as a plant model, and showed neither phytotoxicity nor cytotoxicity. The hybrid nanodiamond–copper(II)–porphyrin material ND@βNH-TPPpCF3-Cu(II) was also evaluated as a reusable catalyst in cyclohexene allylic oxidation, and displayed a remarkable turnover number (TON) value of ≈265,000, using O2 as green oxidant, in the total absence of sacrificial additives, which is the highest activity ever reported for said allylic oxidation. Additionally, ND@βNH-TPPpCF3-Cu(II) could be easily separated from the reaction mixture by centrifugation, and reused in three consecutive catalytic cycles without major loss of activity.
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14
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Sulfonic-functionalized MIL-101 as bifunctional catalyst for cyclohexene oxidation. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2019.110746] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Vikulina A, Voronin D, Fakhrullin R, Vinokurov V, Volodkin D. Naturally derived nano- and micro-drug delivery vehicles: halloysite, vaterite and nanocellulose. NEW J CHEM 2020. [DOI: 10.1039/c9nj06470b] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We discuss prospects for halloysite nanotubes, vaterite crystals and nanocellulose to enter the market of biomaterials for drug delivery and tissue engineering, and their potential for economically viable production from abundant natural sources.
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Affiliation(s)
- Anna Vikulina
- Fraunhofer Institute for Cell Therapy and Immunology
- Branch Bioanalytics and Bioprocesses
- 14476 Potsdam-Golm
- Germany
| | - Denis Voronin
- Gubkin Russian State University of Oil and Gas
- Department of Physical Chemistry
- Moscow, 119991
- Russian Federation
- Saratov State University
| | - Rawil Fakhrullin
- Gubkin Russian State University of Oil and Gas
- Department of Physical Chemistry
- Moscow, 119991
- Russian Federation
- Kazan Federal University, Institute of Fundamental Medicine and Biology, Kreml uramı 18
| | - Vladimir Vinokurov
- Gubkin Russian State University of Oil and Gas
- Department of Physical Chemistry
- Moscow, 119991
- Russian Federation
| | - Dmitry Volodkin
- Gubkin Russian State University of Oil and Gas
- Department of Physical Chemistry
- Moscow, 119991
- Russian Federation
- School of Science and Technology
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Facile preparation of etched halloysite@polyaniline nanorods and their enhanced electrochemical capacitance performance. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134715] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Parashar S, Khare S. Supported transition metal catalysts of Cu(II), Mn(II) and Co(II): synthesis, characterization, and catalytic behavior. REACTION KINETICS MECHANISMS AND CATALYSIS 2019. [DOI: 10.1007/s11144-019-01559-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jin X, Zhang R, Su M, Li H, Yue X, Qin D, Jiang Z. Functionalization of halloysite nanotubes by enlargement and layer-by-layer assembly for controlled release of the fungicide iodopropynyl butylcarbamate. RSC Adv 2019; 9:42062-42070. [PMID: 35542876 PMCID: PMC9076565 DOI: 10.1039/c9ra07593c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 11/15/2019] [Indexed: 11/21/2022] Open
Abstract
Iodopropynyl butylcarbamate (IPBC) is currently one of the most important fungicides widely used for industrial coatings and bamboo treatment. In this work, a controlled release composite with IPBC for inhibition of mold and stain fungi was prepared using enlarged halloysite nanotubes (HNTs) with layer-by-layer (LbL) assembly of polyelectrolyte multilayers. The acid-treated HNTs retained their tubular structure with increased internal diameter, and IPBC loading efficiency was therefore increased to 24.4%, approximately three times the amount of raw HNTs (8.4%). In vitro drug release assay showed that IPBC could be released from HNTs in a sustainable manner with a total release amount of 33.8% over a period of 35 days. The release rate of IPBC could be further controlled by adjusting the number of LbL layers on the tubes and the released amount of IPBC could be limited to less than 10% in 100 days. An inhibition zone test indicated the as-prepared nanocomposites exhibited significant anti-fungal performance against three mold fungi (Aspergillus niger, Trichoderma viride, and Penicillium citrinum) and one stain fungus (Botryodiplodia theobromae). The results support the potential use of HNTs for a prolonged service life of bamboo products. Controlled release of iodopropynyl butylcarbamate from functionalized halloysite nanotubes was realized by coating with LbL polyelectrolyte multilayers, with potential for protection of bamboo materials with a prolonged lifetime.![]()
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Affiliation(s)
- Xiaobei Jin
- International Centre for Bamboo and Rattan
- Beijing
- PR China
| | - Rong Zhang
- International Centre for Bamboo and Rattan
- Beijing
- PR China
| | - Minglei Su
- International Centre for Bamboo and Rattan
- Beijing
- PR China
| | - Huairui Li
- International Centre for Bamboo and Rattan
- Beijing
- PR China
| | - Xianfeng Yue
- International Centre for Bamboo and Rattan
- Beijing
- PR China
| | - Daochun Qin
- International Centre for Bamboo and Rattan
- Beijing
- PR China
| | - Zehui Jiang
- International Centre for Bamboo and Rattan
- Beijing
- PR China
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Pudukudy M, Jia Q, Dong Y, Yue Z, Shan S. Magnetically separable and reusable rGO/Fe3O4 nanocomposites for the selective liquid phase oxidation of cyclohexene to 1,2-cyclohexane diol. RSC Adv 2019; 9:32517-32534. [PMID: 35529707 PMCID: PMC9072983 DOI: 10.1039/c9ra04685b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 09/28/2019] [Indexed: 12/02/2022] Open
Abstract
A series of magnetically separable rGO/Fe3O4 nanocomposites with various amounts of graphene oxide were successfully prepared by a simple ultrasonication assisted precipitation combined with a solvothermal method and their catalytic activity was evaluated for the selective liquid phase oxidation of cyclohexene using hydrogen peroxide as a green oxidant. The prepared materials were characterized using XRD, FTIR, FESEM, TEM, HRTEM, BET/BJH, XPS and VSM analysis. The presence of well crystallized Fe3O4 as the active iron species was seen in the crystal studies of the nanocomposites. The electron microscopy analysis indicated the fine surface dispersion of spherical Fe3O4 nanoparticles on the thin surface layers of partially-reduced graphene oxide (rGO) nanosheets. The decoration of Fe3O4 nanospheres on thin rGO layers was clearly observable in all of the nanocomposites. The XPS analysis was performed to evaluate the chemical states of the elements present in the samples. The surface area of the nanocomposites was increased significantly by increasing the amount of GO and the pore structures were effectively tuned by the amount of rGO in the nanocomposites. The magnetic saturation values of the nanocomposites were found to be sufficient for their efficient magnetic separation. The catalytic activity results show that the cyclohexene conversion reached 75.3% with a highest 1,2-cyclohexane diol selectivity of 81% over 5% rGO incorporated nanocomposite using H2O2 as the oxidant and acetonitrile as the solvent at 70 °C for 6 h. The reaction conditions were further optimized by changing the variables and a possible reaction mechanism was proposed. The enhanced catalytic activity of the nanocomposites for cyclohexene oxidation could be attributed to the fast accomplishment of the Fe2+/Fe3+ redox cycle in the composites due the sacrificial role of rGO and its synergistic effect with Fe3O4, originating from the conjugated network of π-electrons in its surface structure. The rapid and easy separation of the magnetic nanocomposites from the reaction mixture using an external magnet makes the present catalysts highly efficient for the reaction. Moreover, the catalyst retained its activity for five repeated runs without any drastic drop in the reactant conversion and product selectivity. A series of magnetically-separable and reusable rGO/Fe3O4 nanocomposites were successfully synthesized for the selective liquid-phase oxidation of cyclohexene to 1,2-cyclohexane-diol.![]()
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Affiliation(s)
- Manoj Pudukudy
- Faculty of Chemical Engineering
- Kunming University of Science and Technology
- Kunming
- People's Republic of China
| | - Qingming Jia
- Faculty of Chemical Engineering
- Kunming University of Science and Technology
- Kunming
- People's Republic of China
| | - Yanan Dong
- Faculty of Chemical Engineering
- Kunming University of Science and Technology
- Kunming
- People's Republic of China
| | - Zhongxiao Yue
- Faculty of Chemical Engineering
- Kunming University of Science and Technology
- Kunming
- People's Republic of China
| | - Shaoyun Shan
- Faculty of Chemical Engineering
- Kunming University of Science and Technology
- Kunming
- People's Republic of China
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Vinokurov V, Stavitskaya A, Glotov A, Ostudin A, Sosna M, Gushchin P, Darrat Y, Lvov Y. Halloysite nanotube-based cobalt mesocatalysts for hydrogen production from sodium borohydride. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.08.042] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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