1
|
Zhiyong Y, Yaping G, Zhiyin W, Huanrong L. Decolouration of azo dyes by radicals generated from K 2S 2O 8 automatically in homogeneous aqueous solutions. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2024; 58:1072-1081. [PMID: 38433385 DOI: 10.1080/10934529.2024.2313931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 01/17/2024] [Indexed: 03/05/2024]
Abstract
In this work, at 15 °C and 25 °C, authors study the decolouration reactions (or degradation reactions or oxidation reactions) of 0.10 mM azo dyes (methyl orange and congo red) by (1) K2S2O8 and (2) Co2+/K2S2O8, expounding the roles of K2S2O8 and Co2+: K2S2O8 can oxidize azo dyes automatically in water by radicals; Co2+ has catalysis for oxidation of K2S2O8, whether Co2+ is from CoSO4 or Co(NO3)2, CoCl2, CoAc2. The decolouration degree of azo dyes in all systems quickens with the increase of the initial concentration of K2S2O8 and the reaction temperature. In the presence and absence of Co2+, comparative experiments are done between the oxidation of K2S2O8 and oxone, K2S2O8 shows weaker oxidation than oxone. The decolouration reaction of methyl orange (MO) in the system of (0.10 mM MO + 2.00 mM K2S2O8) accords with the second order reaction, the reaction rate constants are 4.789 M-1 min-1 at 15 °C and 5.894 M-1 min-1 at 25 °C respectively, the activation energy Ea is 14813 J/mol, and Arrhenius equation is k = 2.328 exp[-14813/(RT)].
Collapse
Affiliation(s)
- Yu Zhiyong
- Department of Chemistry, Renmin University of China, Beijing, China
| | - Gong Yaping
- Department of Chemistry, Renmin University of China, Beijing, China
| | - Wang Zhiyin
- Shaanxi Key Laboratory of Catalysis; School of Chemical & Environmental Sciences, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Li Huanrong
- Department of Chemistry, Renmin University of China, Beijing, China
| |
Collapse
|
2
|
Raja S, Koperundevi G, Eswaran M. Effect of Microwave Irradiation on the Dielectric Characteristics of Semi-Conductive Nanoparticle-Based Nanofluids: Progress towards the Microwave Synthesis. MICROMACHINES 2023; 14:1194. [PMID: 37374779 DOI: 10.3390/mi14061194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023]
Abstract
Studies on dispersing nanoparticles in base fluid to elevate its essential and critical properties have evolved significantly in the recent decade. Alongside the conventional dispersion techniques used for nanofluid synthesis, microwave energy at 2.4 GHz frequency is irradiated onto the nanofluids is experimented with in this study. The effect of microwave irradiation on the electrical and thermal properties of semi-conductive nanofluids (SNF) is investigated and presented in this article. Titanium dioxide and zinc oxide are the semi-conductive nanoparticles used for this study to synthesize the SNF, viz., titania nanofluid (TNF) and zinc nanofluid (ZNF). Flash and fire points are the thermal properties verified, and dielectric breakdown strength, dielectric constant (εr), and dielectric dissipation factor (tan δ) are the electrical properties verified in this study. AC breakdown voltage (BDV) of TNF and ZNF is improved by 16.78% and 11.25%, respectively, more than SNFs prepared without microwave irradiation. Results justify that the synergetic effect of stirring, sonication, and microwave irradiation in a rational sequence (microwave synthesis) exhibited better electrical and unaltered thermal properties. This microwave-applied nanofluid synthesis could be a simple and effective route to prepare the SNF with improved electrical properties.
Collapse
Affiliation(s)
- S Raja
- Department of Electrical and Electronics Engineering, National Institute of Technology Puducherry, Karaikal 609609, Puducherry, India
| | - G Koperundevi
- Department of Electrical and Electronics Engineering, National Institute of Technology Puducherry, Karaikal 609609, Puducherry, India
| | - Muthusankar Eswaran
- Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| |
Collapse
|
3
|
Tuleushova N, Amanova A, Abdellah I, Benoit M, Remita H, Cornu D, Holade Y, Tingry S. Radiolysis-Assisted Direct Growth of Gold-Based Electrocatalysts for Glycerol Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111713. [PMID: 37299616 DOI: 10.3390/nano13111713] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 06/12/2023]
Abstract
The electrocatalytic oxidation of glycerol by metal electrocatalysts is an effective method of low-energy-input hydrogen production in membrane reactors in alkaline conditions. The aim of the present study is to examine the proof of concept for the gamma-radiolysis-assisted direct growth of monometallic gold and bimetallic gold-silver nanostructured particles. We revised the gamma radiolysis procedure to generate free-standing Au and Au-Ag nano- and micro-structured particles onto a gas diffusion electrode by the immersion of the substrate in the reaction mixture. The metal particles were synthesized by radiolysis on a flat carbon paper in the presence of capping agents. We have integrated different methods (SEM, EDX, XPS, XRD, ICP-OES, CV, and EIS) to examine in detail the as-synthesized materials and interrogate their electrocatalytic efficiency for glycerol oxidation under baseline conditions to establish a structure-performance relationship. The developed strategy can be easily extended to the synthesis by radiolysis of other types of ready-to-use metal electrocatalysts as advanced electrode materials for heterogeneous catalysis.
Collapse
Affiliation(s)
- Nazym Tuleushova
- Institut Européen des Membranes, IEM UMR 5635, University Montpellier, ENSCM, CNRS, 34090 Montpellier, France
| | - Aisara Amanova
- Institut de Chimie Physique, UMR 8000-CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - Ibrahim Abdellah
- Institut de Chimie Physique, UMR 8000-CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - Mireille Benoit
- Institut de Chimie Physique, UMR 8000-CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - Hynd Remita
- Institut de Chimie Physique, UMR 8000-CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - David Cornu
- Institut Européen des Membranes, IEM UMR 5635, University Montpellier, ENSCM, CNRS, 34090 Montpellier, France
| | - Yaovi Holade
- Institut Européen des Membranes, IEM UMR 5635, University Montpellier, ENSCM, CNRS, 34090 Montpellier, France
| | - Sophie Tingry
- Institut Européen des Membranes, IEM UMR 5635, University Montpellier, ENSCM, CNRS, 34090 Montpellier, France
| |
Collapse
|
4
|
Zhu X, Liu H, Wu Y, Ye J, Li Y, Liu Z. Preparation and catalytic properties of polydopamine-modified polyacrylonitrile fibers functionalized with silver nanoparticles. RSC Adv 2022; 12:25906-25911. [PMID: 36199616 PMCID: PMC9465701 DOI: 10.1039/d2ra03845e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/17/2022] [Indexed: 11/21/2022] Open
Abstract
Fiber-supported catalysts have attracted much attention due to their large specific surface area, high catalytic activity, and good recyclability. Functional polyacrylonitrile fibers were prepared by immersion of polyacrylonitrile fibers at room temperature in an alkaline dopamine (pH = 8.5) aqueous solution which can undergo self-polymerization and reduce silver ions to silver nanoparticles with mild reducibility and adsorption. The surface of the polyacrylonitrile fiber (PAN) was wrapped with a layer of polydopamine (PDA), and silver nanoparticles (Ag NPs) were adsorbed on the surface of PDA, forming an efficient fiber catalyst. The morphology and chemical composition of the catalyst material were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) patterns, and Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS). The catalytic activity of the nanocomposite was evaluated for the reduction reaction of 4-nitrophenol using sodium borohydride (NaBH4) at 35 °C with a material molar ratio of 1 : 10 and a fiber loaded catalysis dosage of 40 mg. The liquid phase yield can reach 98% in 30 minutes and can be reused after washing with ethanol. Moreover, the composite material exhibited a good stability up to 10 cycles without a significant loss of its catalytic activity. The results show that the catalyst is easy to recover from the reaction system and has maintained good stability and catalytic activity after many cycles. Via the help of polydopamine, polyacrylonitrile fiber catalysts functionalized with silver nanoparticles were prepared and employed for the reduction reaction of 4-nitrophenol to 4-aminophenol, with a yield of 98% in 30 minutes, and can be reused for up to 10 cycles.![]()
Collapse
Affiliation(s)
- Xiaoyu Zhu
- School of Material Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, P. R. China
| | - Huiying Liu
- School of Material Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, P. R. China
| | - Yingying Wu
- School of Material Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, P. R. China
| | - Jing Ye
- School of Material Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, P. R. China
| | - Yacheng Li
- School of Material Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, P. R. China
| | - Zhendong Liu
- School of Material Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, P. R. China
| |
Collapse
|
5
|
Sharma RK, Yadav S, Dutta S, Kale HB, Warkad IR, Zbořil R, Varma RS, Gawande MB. Silver nanomaterials: synthesis and (electro/photo) catalytic applications. Chem Soc Rev 2021; 50:11293-11380. [PMID: 34661205 DOI: 10.1039/d0cs00912a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In view of their unique characteristics and properties, silver nanomaterials (Ag NMs) have been used not only in the field of nanomedicine but also for diverse advanced catalytic technologies. In this comprehensive review, light is shed on general synthetic approaches encompassing chemical reduction, sonochemical, microwave, and thermal treatment among the preparative methods for the syntheses of Ag-based NMs and their catalytic applications. Additionally, some of the latest innovative approaches such as continuous flow integrated with MW and other benign approaches have been emphasized that ultimately pave the way for sustainability. Moreover, the potential applications of emerging Ag NMs, including sub nanomaterials and single atoms, in the field of liquid-phase catalysis, photocatalysis, and electrocatalysis as well as a positive role of Ag NMs in catalytic reactions are meticulously summarized. The scientific interest in the synthesis and applications of Ag NMs lies in the integrated benefits of their catalytic activity, selectivity, stability, and recovery. Therefore, the rise and journey of Ag NM-based catalysts will inspire a new generation of chemists to tailor and design robust catalysts that can effectively tackle major environmental challenges and help to replace noble metals in advanced catalytic applications. This overview concludes by providing future perspectives on the research into Ag NMs in the arena of electrocatalysis and photocatalysis.
Collapse
Affiliation(s)
- Rakesh Kumar Sharma
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Sneha Yadav
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Sriparna Dutta
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Hanumant B Kale
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
| | - Indrajeet R Warkad
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic.,Nanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic.,U. S. Environmental Protection Agency, ORD, Center for Environmental Solutions and Emergency Response Water Infrastructure Division/Chemical Methods and Treatment Branch, 26 West Martin Luther King Drive, MS 483 Cincinnati, Ohio 45268, USA.
| | - Manoj B Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
| |
Collapse
|
6
|
Li S, Xia X, Vogt BD. Microwave-Enabled Size Control of Iron Oxide Nanoparticles on Reduced Graphene Oxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11131-11141. [PMID: 34499521 DOI: 10.1021/acs.langmuir.1c01990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanoparticle-functionalized 2D material networks are promising for a wide range of applications, but in situ formation of nanoparticles is commonly challenged by rapid growth. Here, we demonstrate controlled synthesis of small and dispersed iron oxide nanoparticles on reduced graphene oxide (rGO) networks through rapid localized heating with microwaves with low-cost iron nitrate as the precursor. The strong coupling of the microwave radiation with the rGO network rapidly heats the network locally to decompose the iron nitrate and generate iron oxide nanoparticles, while cessation of microwaves leads to rapid cooling to minimize crystal growth. Small changes in the microwave reaction time (<1 min) led to very large changes in the iron oxide morphology. The solid-state microwave syntheses produced narrower nanoparticle size distribution than conventional heating. These results illustrate the potential of solid-state microwave syntheses to control the nanoparticle size on 2D materials through rapid localized heating under the microwave process conditions, which should be extendable to a variety of transition metal oxide-rGO systems.
Collapse
Affiliation(s)
- Siyuan Li
- Department of Polymer Engineering, The University of Akron, 250 S Forge St, Akron, Ohio 44325, United States
| | - Xuhui Xia
- Department of Polymer Engineering, The University of Akron, 250 S Forge St, Akron, Ohio 44325, United States
| | - Bryan D Vogt
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| |
Collapse
|
7
|
Wang ER, Shih KY. Facile Microwave Hydrothermal Synthesis of ZnFe 2O 4/rGO Nanocomposites and Their Ultra-Fast Adsorption of Methylene Blue Dye. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5394. [PMID: 34576618 PMCID: PMC8467475 DOI: 10.3390/ma14185394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/12/2021] [Accepted: 09/14/2021] [Indexed: 12/05/2022]
Abstract
The industry development in the last 200 years has led to to environmental pollution. Dyes emitted by pharmaceutical and other industries are major organic pollutants. Organic dyes are a pollutant that must be removed from the environment. In this work, we adopt a facile microwave hydrothermal method to synthesize ZnFe2O4/rGO (ZFG) adsorbents and investigate the effect of synthesis temperature. The crystal structure, morphology, chemical state, and magnetic property of the nanocomposite are investigated by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, and a vibrating sample magnetometer. Furthermore, the synthesized ZFGs are used to remove methylene blue (MB) dye, and the adsorption kinetics, isotherm, mechanism, and reusability of this nanomaterial are studied. The optimal ZFG nanocomposite had a dye removal percentage of almost 100%. The fitting model of adsorption kinetics followed the pseudo-second-order model. The isotherm model followed the Langmuir isotherm and the theoretical maximum adsorption capacity of optimal ZFG calculated by this model was 212.77 mg/g. The π-π stacking and electrostatic interaction resulted in a high adsorption efficiency of ZFG for MB adsorption. In addition, this nanocomposite could be separated by a magnet and maintain its dye removal percentage at almost 100% removal after eight cycles, which indicates its high suitability for utilization in water treatment.
Collapse
Affiliation(s)
| | - Kun-Yauh Shih
- Department of Applied Chemistry, National Pingtung University, Pingtung County 90003, Taiwan;
| |
Collapse
|
8
|
Shih KY, Wei JJ, Tsai MC. One-Step Microwave-Assisted Synthesis of PtNiCo/rGO Electrocatalysts with High Electrochemical Performance for Direct Methanol Fuel Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2206. [PMID: 34578522 PMCID: PMC8467967 DOI: 10.3390/nano11092206] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/19/2021] [Accepted: 08/25/2021] [Indexed: 11/22/2022]
Abstract
Platinum (Pt) is widely used as an activator in direct methanol fuel cells (DMFCs). However, the development of Pt catalyst is hindered due to its high cost and CO poisoning. A multi-metallic catalyst is a promising catalyst for fuel cells. We develop a simple and rapid method to synthesize PtNiCo/rGO nanocomposites (NCs). The PtNiCo/rGO NCs catalyst was obtained by microwave-assisted synthesis of graphene oxide (GO) with Pt, Ni, and Co precursors in ethylene glycol (EG) solution after heating for 20 min. The Pt-Ni-Co nanoparticles showed a narrow particle size distribution and were uniformly dispersed on the reduced graphene oxide without agglomeration. Compared with PtNiCo catalyst, PtNiCo/rGO NCs have superior electrocatalytic properties, including a large electrochemical active surface area (ECSA), the high catalytic activity of methanol, excellent anti-toxic properties, and high electrochemical stability. The ECSA can be up to 87.41 m2/g at a scan rate of 50 mV/s. They also have the lowest oxidation potential of CO. These excellent electrochemical performances are attributed to the uniform dispersion of PtNiCo nanoparticles, good conductivity, stability, and large specific surface area of the rGO carrier. The synthesized PtNiCo/rGO nanoparticles have an average size of 17.03 ± 1.93 nm. We also investigated the effect of catalyst material size on electrocatalytic performance, and the results indicate that PtNiCo/rGO NC catalysts can replace anode catalyst materials in fuel cell applications in the future.
Collapse
Affiliation(s)
- Kun-Yauh Shih
- Department of Applied Chemistry, National Pingtung University, Pingtung County 90003, Taiwan; (J.-J.W.); (M.-C.T.)
| | | | | |
Collapse
|
9
|
Lin EY, Frischknecht AL, Riggleman RA. Chain and Segmental Dynamics in Polymer–Nanoparticle Composites with High Nanoparticle Loading. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00206] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Emily Y. Lin
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Amalie L. Frischknecht
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Robert A. Riggleman
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
10
|
Wetzel O, Hosseini S, Loza K, Heggen M, Prymak O, Bayer P, Beuck C, Schaller T, Niemeyer F, Weidenthaler C, Epple M. Metal-Ligand Interface and Internal Structure of Ultrasmall Silver Nanoparticles (2 nm). J Phys Chem B 2021; 125:5645-5659. [PMID: 34029093 DOI: 10.1021/acs.jpcb.1c02512] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ultrasmall silver nanoparticles were prepared by reduction with NaBH4 and surface-terminated with glutathione (GSH). The particles had a solid core diameter of 2 nm as shown by transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). NMR-DOSY gave a hydrodynamic diameter of 2 to 2.8 nm. X-ray photoelectron spectroscopy (XPS) showed that silver is bound to the thiol group of the central cysteine in glutathione under partial oxidation to silver(+I). In turn, the thiol group is deprotonated to thiolate. X-ray powder diffraction (XRD) together with Rietveld refinement confirmed a twinned (polycrystalline) fcc structure of ultrasmall silver nanoparticles with a lattice compression of about 0.9% compared to bulk silver metal. By NMR spectroscopy, the interaction between the glutathione ligand and the silver surface was analyzed, also with 13C-labeled glutathione. The adsorbed glutathione is fully intact and binds to the silver surface via cysteine. In situ 1H NMR spectroscopy up to 85 °C in dispersion showed that the glutathione ligand did not detach from the surface of the silver nanoparticle, i.e. the silver-sulfur bond is remarkably strong. The ultrasmall nanoparticles had a higher cytotoxicity than bigger particles in in vitro cell culture with HeLa cells with a cytotoxic concentration of about 1 μg mL-1 after 24 h incubation. The overall stoichiometry of the nanoparticles was about Ag∼250GSH∼155.
Collapse
Affiliation(s)
- Oliver Wetzel
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse 5-7, 45117 Essen, Germany
| | - Shabnam Hosseini
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse 5-7, 45117 Essen, Germany
| | - Kateryna Loza
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse 5-7, 45117 Essen, Germany
| | - Marc Heggen
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Oleg Prymak
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse 5-7, 45117 Essen, Germany
| | - Peter Bayer
- Department of Structural and Medicinal Biochemistry, Centre for Medical Biotechnology (ZMB), University of Duisburg-Essen, 45117 Essen, Germany
| | - Christine Beuck
- Department of Structural and Medicinal Biochemistry, Centre for Medical Biotechnology (ZMB), University of Duisburg-Essen, 45117 Essen, Germany
| | - Torsten Schaller
- Organic Chemistry, University of Duisburg-Essen, Universitaetsstrasse 5-7, 45117 Essen, Germany
| | - Felix Niemeyer
- Organic Chemistry, University of Duisburg-Essen, Universitaetsstrasse 5-7, 45117 Essen, Germany
| | - Claudia Weidenthaler
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse 5-7, 45117 Essen, Germany
| |
Collapse
|
11
|
Ratshiedana R, Kuvarega AT, Mishra AK. Titanium dioxide and graphitic carbon nitride-based nanocomposites and nanofibres for the degradation of organic pollutants in water: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10357-10374. [PMID: 33405162 DOI: 10.1007/s11356-020-11987-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
The paper reviews graphitic carbon nitride-based nanostructured photocatalytic materials and nanofibres for applications in water purification. Titanium dioxide has shown unique features that continue to attract research and development (R&D) due to its unique properties such as availability, ultraviolet absorptivity, photocatalysis, adsorption of pollutants and solar cell engineering. Graphitic carbon nitride is an attractive photocatalyst due to its non-toxicity characteristics, good visible light absorption and good thermal and chemical stabilities. In water purification, nanofibres are currently noticed due to their distinctive properties of effective separation and sometimes elimination of organic pollutants in water. In this review, synthesis and utility of doped titanium dioxide and carbon nitride with metal nanoparticles and polymeric nanofibres from nanocomposites as effective materials for the degradation of organic contaminations from water are discussed. The history, current trends and future perspectives are highlighted.
Collapse
Affiliation(s)
- Rudzani Ratshiedana
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Florida, Roodepoort, Johannesburg, 1709, South Africa
| | - Alex Tawanda Kuvarega
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Florida, Roodepoort, Johannesburg, 1709, South Africa
| | - Ajay Kumar Mishra
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Florida, Roodepoort, Johannesburg, 1709, South Africa.
| |
Collapse
|
12
|
One-step microwave-assisted synthesis of carbon-supported ternary Pt-Sn-Rh alloy nanoparticles for fuel cells. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
Rapid one-step synthesis of carbon-supported platinum–copper nanoparticles with enhanced electrocatalytic activity via microwave-assisted heating. J Colloid Interface Sci 2020; 574:421-429. [DOI: 10.1016/j.jcis.2020.04.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 01/06/2023]
|
14
|
Wojnarowicz J, Chudoba T, Lojkowski W. A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphoslogies. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1086. [PMID: 32486522 PMCID: PMC7353225 DOI: 10.3390/nano10061086] [Citation(s) in RCA: 128] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/11/2020] [Accepted: 05/19/2020] [Indexed: 12/18/2022]
Abstract
Zinc oxide (ZnO) is a multifunctional material due to its exceptional physicochemical properties and broad usefulness. The special properties resulting from the reduction of the material size from the macro scale to the nano scale has made the application of ZnO nanomaterials (ZnO NMs) more popular in numerous consumer products. In recent years, particular attention has been drawn to the development of various methods of ZnO NMs synthesis, which above all meet the requirements of the green chemistry approach. The application of the microwave heating technology when obtaining ZnO NMs enables the development of new methods of syntheses, which are characterised by, among others, the possibility to control the properties, repeatability, reproducibility, short synthesis duration, low price, purity, and fulfilment of the eco-friendly approach criterion. The dynamic development of materials engineering is the reason why it is necessary to obtain ZnO NMs with strictly defined properties. The present review aims to discuss the state of the art regarding the microwave synthesis of undoped and doped ZnO NMs. The first part of the review presents the properties of ZnO and new applications of ZnO NMs. Subsequently, the properties of microwave heating are discussed and compared with conventional heating and areas of application are presented. The final part of the paper presents reactants, parameters of processes, and the morphology of products, with a division of the microwave synthesis of ZnO NMs into three primary groups, namely hydrothermal, solvothermal, and hybrid methods.
Collapse
Affiliation(s)
- Jacek Wojnarowicz
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland; (T.C.); (W.L.)
| | | | | |
Collapse
|
15
|
Lin EY, Frischknecht AL, Riggleman RA. Origin of Mechanical Enhancement in Polymer Nanoparticle (NP) Composites with Ultrahigh NP Loading. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02733] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Emily Y. Lin
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Amalie L. Frischknecht
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Robert A. Riggleman
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
16
|
Souza HT, Oliveira SA, Souza JS. Modulating the photocatalytic activity of Ag nanoparticles-titanate nanotubes heterojunctions through control of microwave-assisted synthesis conditions. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
17
|
Saloga PEJ, Thünemann AF. Microwave-Assisted Synthesis of Ultrasmall Zinc Oxide Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12469-12482. [PMID: 31469279 DOI: 10.1021/acs.langmuir.9b01921] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report on ultrasmall zinc oxide single-crystalline nanoparticles of narrow size distribution and long-term colloidal stability. These oleate-stabilized nanoparticles were synthesized using microwave-assisted synthesis for 5 min, corresponding to a 99% decrease in synthesis time, when compared to the conventional synthesis method. It was observed that the average particle radius increases from 2.6 ± 0.1 to 3.8 ± 0.1 nm upon increasing synthesis temperature from 125 to 200 °C. This change also corresponded to observed changes in the optical band gap and the fluorescence energy of the particles, from 3.44 ± 0.01 to 3.36 ± 0.01 eV and from 2.20 ± 0.01 to 2.04 ± 0.01 eV, respectively. Small-angle X-ray scattering, dynamic light scattering, and UV-vis and fluorescence spectroscopy were employed for particle characterization. Debye-Scherrer analysis of the X-ray diffraction (XRD) pattern reveals a linear increase of the crystallite size with synthesis temperature. The consideration of the convolution of a Lorentz function with a Gaussian function for data correction of the instrumental peak broadening has a considerable influence on the values for the crystallite size. Williamson-Hall XRD analyses in the form of the uniform deformation model, uniform stress deformation model, and uniform deformation energy density model revealed a substantial increase of strain, stress, and deformation energy density of the crystallites with decreasing size. Exponential and power law models were utilized for quantification of strain, stress, and deformation energy density.
Collapse
Affiliation(s)
- Patrick E J Saloga
- Bundesanstalt für Materialforschung und -prüfung (BAM) , Unter den Eichen 87 , 12205 Berlin , Germany
- Freie Universität Berlin, Fachbereich Biologie, Chemie, Pharmazie , Takustraße 3 , 14195 Berlin , Germany
| | - Andreas F Thünemann
- Bundesanstalt für Materialforschung und -prüfung (BAM) , Unter den Eichen 87 , 12205 Berlin , Germany
| |
Collapse
|
18
|
Fernández-Barahona I, Muñoz-Hernando M, Herranz F. Microwave-Driven Synthesis of Iron-Oxide Nanoparticles for Molecular Imaging. Molecules 2019; 24:E1224. [PMID: 30925778 PMCID: PMC6479367 DOI: 10.3390/molecules24071224] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/21/2019] [Accepted: 03/25/2019] [Indexed: 12/22/2022] Open
Abstract
Here, we present a comprehensive review on the use of microwave chemistry for the synthesis of iron-oxide nanoparticles focused on molecular imaging. We provide a brief introduction on molecular imaging, the applications of iron oxide in biomedicine, and traditional methods for the synthesis of these nanoparticles. The review then focuses on the different examples published where the use of microwaves is key for the production of nanoparticles. We study how the different parameters modulate nanoparticle properties, particularly for imaging applications. Finally, we explore principal applications in imaging of microwave-produced iron-oxide nanoparticles.
Collapse
Affiliation(s)
- Irene Fernández-Barahona
- NanoMedMol Group, Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (CSIC) and CIBERES, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- Facultad de Farmacia, Universidad Complutense de Madrid, Plaza de ramón y Cajal, 28040 Madrid, Spain.
| | - Maria Muñoz-Hernando
- NanoMedMol Group, Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (CSIC) and CIBERES, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), C/Melchor Fernández-Almagro 3, 28029 Madrid, Spain.
| | - Fernando Herranz
- NanoMedMol Group, Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (CSIC) and CIBERES, C/Juan de la Cierva 3, 28006 Madrid, Spain.
| |
Collapse
|
19
|
Amirjani A, Haghshenas DF. Modified Finke-Watzky mechanisms for the two-step nucleation and growth of silver nanoparticles. NANOTECHNOLOGY 2018; 29:505602. [PMID: 30248024 DOI: 10.1088/1361-6528/aae3dd] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, a new modification was made on the Finke-Watzky mechanism for investigating the nucleation and growth steps in the synthesis of silver nanoparticles (AgNPs). UV-vis spectrophotometry and transmission electron microscopy evaluations proved that the former linear form of Finke-Watzky mechanism is not efficient for describing the nucleation and growth steps of AgNPs synthesis. In this manner, the Finke-Watzky mechanism was modified by considering a reversible pseudo first-order reaction for nucleation step. In addition, no assumptions were made in mathematical calculations related to the rate law which were previously adapted by the researchers in this field; i.e. [A]0 > [A] and k 2[A] ≫ k 1. These considerations led to the development of a kinetic model that is more closely related to what really occurs within the synthesis system. Kinetics data were obtained in a well-known synthesis process of AgNPs namely as sodium borohydride reduction. Furthermore, it was elucidated that polyvinylpyrrolidone (PVP) retards both the nucleation and growth steps resulting in the isotropic growth of seeds; this effect subtly provides a tunable synthesis process for achieving desired size of AgNPs. Moreover, Fourier-transform infrared spectroscopy revealed that the nitrogen atoms present in the PVP molecules are responsible for the interaction of PVP with AgNPs.
Collapse
Affiliation(s)
- Amirmostafa Amirjani
- Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran
| | | |
Collapse
|
20
|
Rostek A, Breisch M, Pappert K, Loza K, Heggen M, Köller M, Sengstock C, Epple M. Comparative biological effects of spherical noble metal nanoparticles (Rh, Pd, Ag, Pt, Au) with 4-8 nm diameter. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:2763-2774. [PMID: 30498649 PMCID: PMC6244119 DOI: 10.3762/bjnano.9.258] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 10/10/2018] [Indexed: 05/30/2023]
Abstract
For a comparative cytotoxicity study, nanoparticles of the noble metals Rh, Pd, Ag, Pt, and Au (spherical, average diameter 4 to 8 nm) were prepared by reduction in water and colloidally stabilized with poly(N-vinyl pyrrolidone) (PVP). Thus, their shape, size, and surface functionalization were all the same. Size and morphology of the nanoparticles were determined by dynamic light scattering (DLS), analytical disc centrifugation (differential centrifugal sedimentation, DCS), and high-resolution transmission electron microscopy (HRTEM). Cell-biological experiments were performed to determine the effect of particle exposure on the viability of human mesenchymal stem cells (hMSCs). Except for silver, no adverse effect of any of the metal nanoparticles was observed for concentrations up to 50 ppm (50 mg L-1) incubated for 24 h, indicating that noble metal nanoparticles (rhodium, palladium, platinum, gold) that do not release ions are not cytotoxic under these conditions.
Collapse
Affiliation(s)
- Alexander Rostek
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, D-45117 Essen, Germany. ; Tel: +49 201 1832402; E-mail:
| | - Marina Breisch
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University of Bochum, Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany
| | - Kevin Pappert
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, D-45117 Essen, Germany. ; Tel: +49 201 1832402; E-mail:
| | - Kateryna Loza
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, D-45117 Essen, Germany. ; Tel: +49 201 1832402; E-mail:
| | - Marc Heggen
- Ernst Ruska-Center and Peter Gruenberg Institute, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany
| | - Manfred Köller
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University of Bochum, Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany
| | - Christina Sengstock
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University of Bochum, Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, D-45117 Essen, Germany. ; Tel: +49 201 1832402; E-mail:
| |
Collapse
|
21
|
Kästner C, Saloga PEJ, Thünemann AF. Kinetic monitoring of glutathione-induced silver nanoparticle disintegration. NANOSCALE 2018; 10:11485-11490. [PMID: 29888371 DOI: 10.1039/c8nr02369g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report on etching of polyacrylic acid-stabilised silver nanoparticles in the presence of glutathione (GSH). The initial particles with a radius of 3.2 nm and consisting of ∼8100 silver atoms dissolve in a two-step reaction mechanism while in parallel smaller silver particles with a radius of 0.65 nm and consisting of 60 to 70 silver atoms were formed. The kinetics of the etching of the initial particles, accompanied by formation of smaller silver particles was interpreted based on in situ, time-resolved small-angle X-ray scattering (SAXS) experiments.
Collapse
Affiliation(s)
- Claudia Kästner
- Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
| | | | | |
Collapse
|