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Polyethyleneimine-Oleic Acid Micelles-Stabilized Palladium Nanoparticles as Highly Efficient Catalyst to Treat Pollutants with Enhanced Performance. Polymers (Basel) 2021; 13:polym13111890. [PMID: 34204167 PMCID: PMC8201335 DOI: 10.3390/polym13111890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/30/2021] [Accepted: 06/02/2021] [Indexed: 11/16/2022] Open
Abstract
Water soluble organic molecular pollution endangers human life and health. It becomes necessary to develop highly stable noble metal nanoparticles without aggregation in solution to improve their catalytic performance in treating pollution. Polyethyleneimine (PEI)-based stable micelles have the potential to stabilize noble metal nanoparticles due to the positive charge of PEI. In this study, we synthesized the amphiphilic PEI-oleic acid molecule by acylation reaction. Amphiphilic PEI-oleic acid assembled into stable PEI-oleic acid micelles with a hydrodynamic diameter of about 196 nm and a zeta potential of about 34 mV. The PEI-oleic acid micelles-stabilized palladium nanoparticles (PO-PdNPsn) were prepared by the reduction of sodium tetrachloropalladate using NaBH4 and the palladium nanoparticles (PdNPs) were anchored in the hydrophilic layer of the micelles. The prepared PO-PdNPsn had a small size for PdNPs and good stability in solution. Noteworthily, PO-PdNPs150 had the highest catalytic activity in reducing 4-nitrophenol (4-NP) (Knor = 18.53 s−1mM−1) and oxidizing morin (Knor = 143.57 s−1M−1) in aqueous solution than other previous catalysts. The enhanced property was attributed to the improving the stability of PdNPs by PEI-oleic acid micelles. The method described in this report has great potential to prepare many kinds of stable noble metal nanoparticles for treating aqueous pollution.
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Kempasiddaiah M, Kandathil V, Dateer RB, Baidya M, Patil SA, Patil SA. Efficient and recyclable palladium enriched magnetic nanocatalyst for reduction of toxic environmental pollutants. J Environ Sci (China) 2021; 101:189-204. [PMID: 33334515 DOI: 10.1016/j.jes.2020.08.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/12/2020] [Accepted: 08/16/2020] [Indexed: 06/12/2023]
Abstract
In this paper, highly stable, powerful, and recyclable magnetic nanoparticles tethered N-heterocyclic carbene-palladium(II) ((CH3)3-NHC-Pd@Fe3O4) as magnetic nanocatalyst was successfully synthesized from a simplistic multistep synthesis under aerobic conditions through easily available low-cost chemicals. Newly synthesized (CH3)3-NHC-Pd@Fe3O4 magnetic nanocatalyst was characterized from various analytical tools and catalytic potential of the (CH3)3-NHC-Pd@Fe3O4 magnetic nanocatalyst was studied for the catalytic reduction of toxic 4-nitrophenol (4-NP), hexavalent chromium (Cr(VI)), Methylene Blue (MB) and Methyl Orange (MO) at room temperature in aqueous media. UV-Visible spectroscopy was employed to monitor the reduction reactions. New (CH3)3-NHC-Pd@Fe3O4 magnetic nanocatalyst exhibited excellent catalytic activity for the reduction of toxic environmental pollutants. Moreover, (CH3)3-NHC-Pd@Fe3O4 magnetic nanocatalyst could be easily and rapidly separated from the reaction mixture with the help of an external magnet and recycled minimum five times in reduction of 4-NP, MB, MO and four times in Cr(VI) without significant loss of catalytic potential and remains stable even after reuse.
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Affiliation(s)
- Manjunatha Kempasiddaiah
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India
| | - Vishal Kandathil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India
| | - Ramesh B Dateer
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Shivaputra A Patil
- Pharmaceutical Sciences Department, College of Pharmacy, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - Siddappa A Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India.
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Bulut O, Yilmaz MD. Catalytic evaluation of biocompatible chitosan-stabilized gold nanoparticles on oxidation of morin. Carbohydr Polym 2021; 258:117699. [PMID: 33593570 DOI: 10.1016/j.carbpol.2021.117699] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 11/16/2022]
Abstract
Herein, we present a study on the catalytic evaluation of biocompatible chitosan-stabilized gold nanoparticles (CH-AuNPs) on the oxidation of morin as a model reaction. Biocompatible CH-AuNPs have been characterized through several analytical methods such as TEM, UV-vis, DLS and zeta potential analyses. CH-AuNPs have a small size (10 ± 0.4 nm) with a narrow size distribution and high positive surface charge (+40.1 mV). CH-AuNPs has been demonstrated to be highly active nanocatalysts for the oxidation of morin with the assistance of H2O2 as an oxidant compared with control experiments. The oxidation reaction follows a pseudo-first-order reaction. The kinetic studies show that apparent rate constant (kapp) is positively correlated with the concentrations of CH-AuNPs and H2O2, while it is negatively correlated with morin concentration. Furthermore, the reusability tests have been performed and the results demonstrate the long-term stability and reusability of CH-AuNPs without any loss of catalytic activity. Cytotoxicity studies exhibit that CH-AuNPs have low toxicity and they are biocompatible with HeLa and MCF-7 cells.
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Affiliation(s)
- Onur Bulut
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080 Konya, Turkey; Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey
| | - M Deniz Yilmaz
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080 Konya, Turkey; Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey.
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Ilunga AK, Mamba BB, Nkambule TT. Methyl orange degradation enhanced by hydrogen spillover onto platinum nanocatalyst surface. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ali K. Ilunga
- Nanotechnology and Water Sustainability (NanoWS) Research Unit University of South Africa (UNISA Science Campus) Florida (Johannesburg) PO Box 392 South Africa
| | - Bhekie B. Mamba
- Nanotechnology and Water Sustainability (NanoWS) Research Unit University of South Africa (UNISA Science Campus) Florida (Johannesburg) PO Box 392 South Africa
| | - Thabo T.I. Nkambule
- Nanotechnology and Water Sustainability (NanoWS) Research Unit University of South Africa (UNISA Science Campus) Florida (Johannesburg) PO Box 392 South Africa
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Alimi OA, Akinnawo CA, Onisuru OR, Meijboom R. 3-D printed microreactor for continuous flow oxidation of a flavonoid. J Flow Chem 2020. [DOI: 10.1007/s41981-020-00089-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Squarcina A, Santoro A, Hickey N, De Zorzi R, Carraro M, Geremia S, Bortolus M, Di Valentin M, Bonchio M. Neutralization of Reactive Oxygen Species at Dinuclear Cu(II)-Cores: Tuning the Antioxidant Manifold in Water by Ligand Design. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01955] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
| | | | - Neal Hickey
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Rita De Zorzi
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy
| | | | - Silvano Geremia
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy
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Ilunga AK, Mamba BB, Nkambule TTI. Fabrication of palladium and platinum nanocatalysts stabilized by polyvinylpyrrolidone and their use in the hydrogenolysis of methyl orange. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01746-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Dhenadhayalan N, Lin KC. Photochemically Synthesized Ruthenium Nanoparticle-Decorated Carbon-Dot Nanochains: An Efficient Catalyst for Synergistic Redox Reactions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:13759-13769. [PMID: 32124604 DOI: 10.1021/acsami.9b20477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ruthenium nanoparticle (NP)-decorated carbon dots (Ru/C-dots) were fabricated as a potential catalyst in the application of both oxidation and reduction. The photochemical method was used to synthesize Ru/C-dot nanohybrids. The as-prepared Ru/C-dots exhibited a core-shell-based nanochain structure, in which the spherical nature of C-dots further evolved to a layer structure to homogeneously encapsulate Ru NPs. Such Ru/C-dots have excellent catalytic properties, which were demonstrated in the oxidation of flavonoids and concomitantly reduction of inorganic complex and organic dyes, each yielding a high catalytic rate constant. We also proposed an appropriate catalytic mechanism for each reaction. Higher catalytic activity was achieved by the synergistic effect of the encapsulated Ru NPs and the C-dots layer. Further, this nanohybrid was successfully applied to inspect a real aqueous sample. We anticipated that Ru/C-dots nanohybrid may open up a broad platform for the design of efficient multifunctional catalysts.
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Affiliation(s)
- Namasivayam Dhenadhayalan
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - King-Chuen Lin
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
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Gu S, Risse S, Lu Y, Ballauff M. Mechanism of the Oxidation of 3,3',5,5'-Tetramethylbenzidine Catalyzed by Peroxidase-Like Pt Nanoparticles Immobilized in Spherical Polyelectrolyte Brushes: A Kinetic Study. Chemphyschem 2020; 21:450-458. [PMID: 31875355 DOI: 10.1002/cphc.201901087] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/17/2019] [Indexed: 02/03/2023]
Abstract
Experimental and kinetic modelling studies are presented to investigate the mechanism of 3,3',5,5'-tetramethylbenzidine (TMB) oxidation by hydrogen peroxide (H2 O2 ) catalyzed by peroxidase-like Pt nanoparticles immobilized in spherical polyelectrolyte brushes (SPB-Pt). Due to the high stability of SPB-Pt colloidal, this reaction can be monitored precisely in situ by UV/VIS spectroscopy. The time-dependent concentration of the blue-colored oxidation product of TMB expressed by different kinetic models was used to simulate the experimental data by a genetic fitting algorithm. After falsifying the models with abundant experimental data, it is found that both H2 O2 and TMB adsorb on the surface of Pt nanoparticles to react, indicating that the reaction follows the Langmuir-Hinshelwood mechanism. A true rate constant k, characterizing the rate-determining step of the reaction and which is independent on the amount of catalysts used, is obtained for the first time. Furthermore, it is found that the product adsorbes strongly on the surface of nanoparticles, thus inhibiting the reaction. The entire analysis provides a new perspective to study the catalytic mechanism and evaluate the catalytic activity of the peroxidase-like nanoparticles.
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Affiliation(s)
- Sasa Gu
- College of Materials Science and Engineering, Nanjing Tech University, 211816, Nanjing, China
| | - Sebastian Risse
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Yan Lu
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.,Institute of Chemistry, University of Potsdam, 14476, Potsdam, Germany
| | - Matthias Ballauff
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
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Xiao H, Wang R, Dong L, Cui Y, Chen S, Sun H, Ma G, Gao D, Wang L. Biocompatible Dendrimer-Encapsulated Palladium Nanoparticles for Oxidation of Morin. ACS OMEGA 2019; 4:18685-18691. [PMID: 31737829 PMCID: PMC6854556 DOI: 10.1021/acsomega.9b02606] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/10/2019] [Indexed: 05/08/2023]
Abstract
Development of highly efficient catalysts to expedite the degradation of organic dyes has been drawing great attention. The aggregation of catalysts reduces the accessibility of catalytic centers for organic dyes and therefore decreases their catalytic ability. Herein, we report a facile method to prepare highly biocompatible and stable dendrimer-encapsulated palladium nanoparticles (Pd n -G5MCI NPs), which exhibit high catalytic efficiency for oxidation of morin. The biocompatible dendrimers were prepared via surface modification of G5 polyamidoamine (G5 PAMAM) dendrimers using maleic anhydride and l-cysteine. Then, they were incubated with disodium tetrachloropalladate, followed by reduction using sodium borohydride to generate Pd n -G5MCI NPs. Transmission electron microscopy results demonstrated that palladium nanoparticles (Pd NPs) inside Pd n -G5MCI had small diameters (1.77-2.35 nm) and monodisperse states. Dynamic light scattering results confirmed that Pd n -G5MCI NPs had good dispersion and high stability in water. Furthermore, MTT results demonstrated that Pd n -G5MCI NPs had high biocompatibility. More importantly, Pd n -G5MCI NPs successfully catalyzed the decomposition of H2O2 to the hydroxyl radical (•OH), and the generated •OH quickly oxidized morin. This reaction kinetics followed pseudo-first-order kinetics. Apparent rate constant (k app) is an important criterion for evaluating the catalytic rate. The concentrations of Pd n -G5MCI NPs and H2O2 were positively correlated with k app, whereas the correlation between the concentration of morin and k app was negative. The prepared Pd n -G5MCI NPs have great potential to catalyze the degradation of organic dyes in bio-related systems in the future.
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Affiliation(s)
- Haiyan Xiao
- Key
Laboratory of Applied Chemistry, College of Environmental and Chemical
Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Ran Wang
- Key
Laboratory of Applied Chemistry, College of Environmental and Chemical
Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Le Dong
- Key
Laboratory of Applied Chemistry, College of Environmental and Chemical
Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Yanshuai Cui
- Key
Laboratory of Applied Chemistry, College of Environmental and Chemical
Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Shengfu Chen
- Key
Laboratory of Biomass Chemical Engineering of Ministry of Education,
College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Haotian Sun
- Key
Laboratory of Biomass Chemical Engineering of Ministry of Education,
College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Guanglong Ma
- Key
Laboratory of Biomass Chemical Engineering of Ministry of Education,
College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Dawei Gao
- Key
Laboratory of Applied Chemistry, College of Environmental and Chemical
Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Longgang Wang
- Key
Laboratory of Applied Chemistry, College of Environmental and Chemical
Engineering, Yanshan University, Qinhuangdao 066004, China
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11
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Surface Property-Activity Relations of Co/Sn Oxide Nanocatalysts Evaluated Using a Model Reaction: Surface Characterization Study. Catal Letters 2019. [DOI: 10.1007/s10562-019-02819-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Yurdakul M, Oktem HA, Yilmaz MD. Transition Metal Chelated Biopolymer Coated Mesoporous Silica Nanoparticles as Highly Efficient, Stable, and Recyclable Nanocatalysts for Catalytic Bleaching. ChemistrySelect 2019. [DOI: 10.1002/slct.201803783] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Merve Yurdakul
- Department of Bioengineering; Faculty of Engineering and Architecture; Konya Food and Agriculture University; 42080 Konya Turkey
| | - Huseyin Avni Oktem
- Nanobiz Technology Inc.; Gallium Bld. No. 27, METU Science Park Ankara Turkey
| | - M Deniz Yilmaz
- Department of Bioengineering; Faculty of Engineering and Architecture; Konya Food and Agriculture University; 42080 Konya Turkey
- Research and Development Center for Diagnostic Kits (KIT-ARGEM); Konya Food and Agriculture University; 42080 Konya Turkey
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13
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Yu S, Cui Y, Guo X, Chen S, Sun H, Wang L, Wang J, Zhao Y, Liu Z. Biocompatible bovine serum albumin stabilized platinum nanoparticles for the oxidation of morin. NEW J CHEM 2019. [DOI: 10.1039/c9nj00887j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Bovine serum albumin stabilized platinum nanoparticles promoted the formation of ˙OH from H2O2to catalyze the oxidation of morin.
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Affiliation(s)
- Shuqian Yu
- Key Laboratory of Applied Chemistry
- College of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao
- China
| | - Yanshuai Cui
- Key Laboratory of Applied Chemistry
- College of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao
- China
| | - Xiaolei Guo
- Key Laboratory of Applied Chemistry
- College of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao
- China
| | - Shengfu Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Haotian Sun
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Longgang Wang
- Key Laboratory of Applied Chemistry
- College of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao
- China
| | - Jing Wang
- Key Laboratory of Applied Chemistry
- College of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao
- China
| | - Yu Zhao
- Key Laboratory of Applied Chemistry
- College of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao
- China
| | - Zhiwei Liu
- Key Laboratory of Applied Chemistry
- College of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao
- China
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14
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A Review of Dendrimer-Encapsulated Metal Nanocatalysts Applied in the Fine Chemical Transformations. Catal Letters 2018. [DOI: 10.1007/s10562-018-2584-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Comparative study of bis-chelate M(II) complexes (M = Ni, Cu, Zn) as new heterogeneous photocatalysts for degradation of methylene blue under visible light. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3484-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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16
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Wang L, Zhang J, Guo X, Chen S, Cui Y, Yu Q, Yang L, Sun H, Gao D, Xie D. Highly stable and biocompatible zwitterionic dendrimer-encapsulated palladium nanoparticles that maintain their catalytic activity in bacterial solution. NEW J CHEM 2018. [DOI: 10.1039/c8nj04263b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This study offers a method for constructing an artificial enzyme (Pdn-G5MC), which maintains its catalytic efficiency in bacterial solution.
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Nemanashi-Maumela M, Nongwe I, Motene RC, Davids BL, Meijboom R. Au and Ag nanoparticles encapsulated within silica nanospheres using dendrimers as dual templating agent and their catalytic activity. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Lu Y, Ballauff M. Spherical polyelectrolyte brushes as nanoreactors for the generation of metallic and oxidic nanoparticles: Synthesis and application in catalysis. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2016.03.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Rahaman H, Ghosh SK. Soft-templated synthesis of Mn3O4 microdandelions for the degradation of alizarin red under visible light irradiation. RSC Adv 2016. [DOI: 10.1039/c5ra25935e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A soft-templated strategy has been developed for the synthesis of self-assembled Mn3O4 microdandelions that exhibit potential photocatalytic activity towards the degradation of alizarin red under visible light irradiation.
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Ilunga AK, Meijboom R. Catalytic oxidation of methylene blue by dendrimer encapsulated silver and gold nanoparticles. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2015.10.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Synthesis of manganese oxide supported on mesoporous titanium oxide: Influence of the block copolymer. J SOLID STATE CHEM 2015. [DOI: 10.1016/j.jssc.2014.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Wang WM, Song J, Han X. Schwertmannite as a new Fenton-like catalyst in the oxidation of phenol by H2O2. JOURNAL OF HAZARDOUS MATERIALS 2013; 262:412-419. [PMID: 24076478 DOI: 10.1016/j.jhazmat.2013.08.076] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 08/01/2013] [Accepted: 08/31/2013] [Indexed: 05/29/2023]
Abstract
In this study, schwertmannite was prepared through a hydrothermal method and used as a new Fenton-like catalyst in the oxidation of phenol by H2O2. The synthesized iron oxide had a formula of Fe8O8(OH)4.5(SO4)1.75 with a weak crystalline structure as well as a high specific surface area of 325.52 m(2) g(-1). However, schwertmannite has not been used as a Fenton-like catalyst so far, and its catalytic mechanism in the oxidation of phenol is still unknown. This study confirmed that schwertmannite had a good catalytic activity in the oxidation of phenol via a OH radical mechanism. The free radicals could be generated on the schwertmannite surface by ≡ Fe(III) species and in bulk solution by dissolved Fe(III) over a wide pH range. The synthesized schwertmannite also showed a high catalytic ability in the oxidation of phenol in the presence of 0.5M nitrate, chloride or sulfate anions at initial pH 5.0, indicating its potential application in the treatment of high salinity wastewater. In addition, phenol removal percentage could still reach 98% after schwertmannite was successively used for 12 cycles, indicating the good reusability of this catalyst, although a phase transformation of schwertmannite to goethite was observed.
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Affiliation(s)
- Wei-Min Wang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin, PR China; School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, PR China
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Yang J, Hua Q, Chang S, Yu X, Ma Y, Huang W. Catalytic Performance of MnOx Nanorods in Aerobic Oxidation of Benzyl Alcohol. CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/04/424-430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Polzer F, Holub-Krappe E, Rossner H, Erko A, Kirmse H, Plamper F, Schmalz A, Müller AHE, Ballauff M. Structural analysis of colloidal MnO x composites. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2725-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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