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Li P, Huang Z, Yang J, Zhang C, Tang S, Ma Y, Liu W. Optimizing Silver Paste Conductivity with Controlled Convection for Nanowrinkle Growth. ACS APPLIED MATERIALS & INTERFACES 2024; 16:34181-34191. [PMID: 38885088 DOI: 10.1021/acsami.4c07047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Conductive silver paste plays a crucial role as an interconnecting material between electrodes and circuits in electronic circuits and solar cells. The quality of the silver paste is greatly influenced by the preparation of the conductive-phase silver powder and the sintering process. This study investigated the impact of fluid dynamics on the preparation of silver powder. Combined with X-ray diffractometer characterization and molecular dynamics simulation, the formation mechanism of wrinkled silver powder was explained. The wrinkled silver powder replaced the traditional smooth spherical silver powder, and the point contact between the smooth silver powder turned into a line and surface contact. After mixing and sintering with the micrometer flake silver powder, the electrical conductivity and sintering morphology of the silver paste were improved. Compared with the silver content of conventional silver paste (≥75 wt %), the silver paste of (9.23 ± 0.68) × 10-6 Ω cm can be prepared by curing at 250 °C for 45 min when wrinkled powder/flake powder = 1:1 and silver paste content was only 66.7%. This research work provides a new idea for the morphology control of submicrometer silver powder, which has important applications in the field of low-temperature silver paste for new N-type batteries.
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Affiliation(s)
- Panzhen Li
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China
| | - Zhe Huang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China
| | - Jin Yang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China
| | - Chenhe Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China
| | - Siwei Tang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China
| | - Yunzhu Ma
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China
| | - Wensheng Liu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China
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2
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Cai L, Zhu X, Ruan H, Yang J, Wei W, Wu Y, Zhou L, Jiang H, Ji M, Chen J. Curcumin-stabilized silver nanoparticles encapsulated in biocompatible electrospun nanofibrous scaffold for sustained eradication of drug-resistant bacteria. JOURNAL OF HAZARDOUS MATERIALS 2023; 452:131290. [PMID: 37023575 DOI: 10.1016/j.jhazmat.2023.131290] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/27/2023] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
Due to the misuse of antibiotics, the emerging drug-resistance of pathogenic microbes has aroused considerable concerns for the public health, which demands the continuous search for safe and efficient antimicrobial treatment. In this study, curcumin reduced and stabilized silver nanoparticles (C-Ag NPs) were successfully encapsulated into electrospun nanofiber membranes consisted of polyvinyl alcohol (PVA) cross-linked by citric acids (CA), which exhibited desirable biocompatibility and broad-spectrum antimicrobial activities. The homogeneously distributed and sustained release of C-Ag NPs in the constructed nanofibrous scaffolds yield prominent killing effect against Escherichia coli, Staphylococcus aureus and Methicillin-resistant Staphylococcus aureus (MRSA), which involved the reactive oxygen species (ROS) generation. Outstanding elimination of bacterial biofilms and excellent antifungal activity against Candida albicans was also identified after treated with PVA/CA/C-Ag. Transcriptomic analysis on MRSA treated by PVA/CA/C-Ag revealed the antibacterial process is related to disrupting carbohydrate and energy metabolism, as well as destroying bacterial membranes. Significant down-regulation of the expression of multidrug-resistant efflux pump gene sdrM was observed pointing to the role of PVA/CA/C-Ag to overcome the bacterial resistance. Therefore, the constructed ecofriendly and biocompatible nanofibrous scaffolds provide a robust and versatile nanoplatform of reversal potential to eradicate drug-resistant pathogenic microbe in environmental as well as healthcare applications.
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Affiliation(s)
- Ling Cai
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Xinyi Zhu
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Hongjie Ruan
- Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, 123 Tianfei Lane, Nanjing 210004, China
| | - Jing Yang
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Wei Wei
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yuan Wu
- Department of Medical Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Liuzhu Zhou
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Huijun Jiang
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Minghui Ji
- School of Nursing, Nanjing Medical University, Nanjing 211166, China
| | - Jin Chen
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Jiangsu Province Engineering Research Center of Antibody Drug, Key Laboratory of Antibody Technique of National Health Commission, Nanjing Medical University, Nanjing 211166, China.
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3
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Scarabelli L, Sun M, Zhuo X, Yoo S, Millstone JE, Jones MR, Liz-Marzán LM. Plate-Like Colloidal Metal Nanoparticles. Chem Rev 2023; 123:3493-3542. [PMID: 36948214 PMCID: PMC10103137 DOI: 10.1021/acs.chemrev.3c00033] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
The pseudo-two-dimensional (2D) morphology of plate-like metal nanoparticles makes them one of the most anisotropic, mechanistically understood, and tunable structures available. Although well-known for their superior plasmonic properties, recent progress in the 2D growth of various other materials has led to an increasingly diverse family of plate-like metal nanoparticles, giving rise to numerous appealing properties and applications. In this review, we summarize recent progress on the solution-phase growth of colloidal plate-like metal nanoparticles, including plasmonic and other metals, with an emphasis on mechanistic insights for different synthetic strategies, the crystallographic habits of different metals, and the use of nanoplates as scaffolds for the synthesis of other derivative structures. We additionally highlight representative self-assembly techniques and provide a brief overview on the attractive properties and unique versatility benefiting from the 2D morphology. Finally, we share our opinions on the existing challenges and future perspectives for plate-like metal nanomaterials.
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Affiliation(s)
- Leonardo Scarabelli
- NANOPTO Group, Institue of Materials Science of Barcelona, Bellaterra, 08193, Spain
| | - Muhua Sun
- National Center for Electron Microscopy in Beijing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Xiaolu Zhuo
- Guangdong Provincial Key Lab of Optoelectronic Materials and Chips, School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Shenzhen 518172, China
| | - Sungjae Yoo
- Research Institute for Nano Bio Convergence, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Chemistry Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jill E Millstone
- Department of Chemistry, Department of Chemical and Petroleum Engineering, Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Matthew R Jones
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Department of Materials Science & Nanoengineering, Rice University, Houston, Texas 77005, United States
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastián, Spain
- Ikerbasque, 43009 Bilbao, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 20014 Donostia-San Sebastián, Spain
- Cinbio, Universidade de Vigo, 36310 Vigo, Spain
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4
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Abstract
A significant challenge in the development of functional materials is understanding the growth and transformations of anisotropic colloidal metal nanocrystals. Theory and simulations can aid in the development and understanding of anisotropic nanocrystal syntheses. The focus of this review is on how results from first-principles calculations and classical techniques, such as Monte Carlo and molecular dynamics simulations, have been integrated into multiscale theoretical predictions useful in understanding shape-selective nanocrystal syntheses. Also, examples are discussed in which machine learning has been useful in this field. There are many areas at the frontier in condensed matter theory and simulation that are or could be beneficial in this area and these prospects for future progress are discussed.
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Affiliation(s)
- Kristen A Fichthorn
- Department of Chemical Engineering and Department of Physics The Pennsylvania State University University Park, Pennsylvania 16803 United States
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5
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Yu S, Zhang C, Yang H. Two-Dimensional Metal Nanostructures: From Theoretical Understanding to Experiment. Chem Rev 2023; 123:3443-3492. [PMID: 36802540 DOI: 10.1021/acs.chemrev.2c00469] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
This paper reviews recent studies on the preparation of two-dimensional (2D) metal nanostructures, particularly nanosheets. As metal often exists in the high-symmetry crystal phase, such as face centered cubic structures, reducing the symmetry is often needed for the formation of low-dimensional nanostructures. Recent advances in characterization and theory allow for a deeper understanding of the formation of 2D nanostructures. This Review firstly describes the relevant theoretical framework to help the experimentalists understand chemical driving forces for the synthesis of 2D metal nanostructures, followed by examples on the shape control of different metals. Recent applications of 2D metal nanostructures, including catalysis, bioimaging, plasmonics, and sensing, are discussed. We end the Review with a summary and outlook of the challenges and opportunities in the design, synthesis, and application of 2D metal nanostructures.
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Affiliation(s)
- Siying Yu
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Cheng Zhang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Hong Yang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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6
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Takagai Y, Nagasaku M, Nakagawa T, Takase T, Hinze WL. Preparation of Highly Concentrated Uniform-Sized Silver Nanoparticles via Use of Thermoresponsive Zwitterionic Surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13577-13583. [PMID: 36279511 DOI: 10.1021/acs.langmuir.2c02322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Despite the popular use of citrate for the reduction of silver ions, this process suffers from slow crystal growth and broad size distribution. The rapid and effective synthesis of highly concentrated and stable spherical silver nanoparticles (AgNPs) confined in the surfactant-rich phase of thermoresponsive 3-(alkyldimethylammonio)-propyl sulfate surfactants obtained after reaction with citrate ions at high temperature is described. The present approach using the zwitterionic surfactant offers an alternative rapid approach for production of AgNPs and an in situ phase separation step that serves to "extract" and concentrate the AgNPs in the surfactant-rich phase. Almost all (synthetic yield 99.9%, extraction efficiency 98.6%) of the synthesized AgNPs with a diameter of 21.0 ± 2.5 nm were incorporated into the phase-separated surfactant-rich phase at pH 11, and the capacity (maximum concentration) was 3.4 × 1013 particles/mL. The AgNPs were stable upon long-term storage (at least 3 months).
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Affiliation(s)
- Yoshitaka Takagai
- Faculty of Symbiotic Systems Science, Cluster of Science and Technology, Fukushima University, 1 Kanayagawa, Fukushima960-1296, Japan
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima960-1296, Japan
| | - Miyu Nagasaku
- Faculty of Symbiotic Systems Science, Cluster of Science and Technology, Fukushima University, 1 Kanayagawa, Fukushima960-1296, Japan
| | - Taichi Nakagawa
- Faculty of Symbiotic Systems Science, Cluster of Science and Technology, Fukushima University, 1 Kanayagawa, Fukushima960-1296, Japan
| | - Tsugiko Takase
- Faculty of Symbiotic Systems Science, Cluster of Science and Technology, Fukushima University, 1 Kanayagawa, Fukushima960-1296, Japan
| | - Willie L Hinze
- Department of Chemistry, Wake Forest University, P.O. Box 7486, Winston-Salem, North Carolina27109, United States
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7
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In Situ Growth of Nanosilver on Fabric for Flexible Stretchable Electrodes. Int J Mol Sci 2022; 23:ijms232113236. [PMID: 36362024 PMCID: PMC9657318 DOI: 10.3390/ijms232113236] [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: 10/01/2022] [Revised: 10/25/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
Flexible sensing can disruptively change the physical form of traditional electronic devices to achieve flexibility in information acquisition, processing, transmission, display, and even energy, and it is a core technology for a new generation of the industrial internet. Fabric is naturally flexible and stretchable, and its knitted ability makes it flexibility and stretchability even more adjustable. However, fabric needs to be electrically conductive to be used for flexible sensing, which allows it to carry a variety of circuits. The dip-coating technique is a common method for preparing conductive fabrics, which are made conductive by attaching conductive fillers to the fabrics. However, the adhesion of the conductive fillers on the surface of such conductive fabrics is weak, and the conductive property will decay rapidly because the conductive filler falls off after repeated stretching, limiting the lifespan of flexible electronic devices based on conductive fabric. We chose multifunctional nanosilver as a conductive filler, and we increased the adhesion of nanosilver to fabric fiber by making nanosilver grow in situ and cover the fiber, so as to obtain conductive fabric with good conductivity. This conductive fabric has a minimum square resistance of 9 Ω/sq and has better electrical conductivity and more stable electrical properties than the conductive fabric prepared using the dip-coating process, and its square resistance did not increase significantlyafter 60 stretches.
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8
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Sathiyaseelan A, Saravanakumar K, Wang MH. Bimetallic silver-platinum (AgPt) nanoparticles and chitosan fabricated cotton gauze for enhanced antimicrobial and wound healing applications. Int J Biol Macromol 2022; 220:1556-1569. [PMID: 36100005 DOI: 10.1016/j.ijbiomac.2022.09.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 08/25/2022] [Accepted: 09/06/2022] [Indexed: 11/20/2022]
Abstract
Wound healing is a significant clinical and socioeconomic problem that is often affected by microbial infection. Inappropriate monitoring leads to unfavorable concerns for surrounding tissues. Cotton gauzes have been used as low-cost wound dressing material but prolong healing owing to strong adherence and secondary microbial infections. Hence, we prepared the bimetallic (silver and platinum) nanoparticles (AgPt NPs) using citric acid (CA) as a reducing agent and then coated them on chitosan (CS) fabricated cotton gauze (CG) for enhanced antimicrobial and wound healing applications. The synthesis of AgPt NPs was evidenced UV-Visible spectroscopy, FE-TEM, and elemental mapping analysis. The average size of AgPt NPs was 21.48 ± 6.32 nm and spherical in structure. Besides, AgPt NPs showed a hydrodynamic size of 63.64 (d.nm) with a polydispersity index of 0.220 and a zeta potential of -28.1 mV. The FT-IR and XRD analysis demonstrated the functional changes and crystalline properties of AgPt NPs. The antimicrobial efficacy of AgPt NPs was significantly higher than standard antibiotic against bacteria, yeast, and filamentous fungi. Furthermore, the AgPt NPs-CS/CG exhibited a substantial hydrophobic nature with better antimicrobial and antioxidant activity. In addition, pH-dependent Ag and Pt release from the AgPt NPs-CS/CG was determined by ICP-MS analysis. The treatment of AgPt NPs-CS/CG augmented the in vitro wound healing in mouse embryonic fibroblast cells (NIH3T3). Hence, we concluded that AgPt NPs-CS/CG could be used to enhance antimicrobial and wound healing applications.
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Affiliation(s)
- Anbazhagan Sathiyaseelan
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Kandasamy Saravanakumar
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Myeong-Hyeon Wang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea.
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9
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Recent Advances in Silver Nanostructured Substrates for Plasmonic Sensors. BIOSENSORS 2022; 12:bios12090713. [PMID: 36140098 PMCID: PMC9496211 DOI: 10.3390/bios12090713] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/20/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022]
Abstract
Noble metal nanostructures are known to confine photon energies to their dimensions with resonant oscillations of their conduction electrons, leading to the ultrahigh enhancement of electromagnetic fields in numerous spectroscopic methods. Of all the possible plasmonic nanomaterials, silver offers the most intriguing properties, such as best field enhancements and tunable resonances in visible-to-near infrared regions. This review highlights the recent developments in silver nanostructured substrates for plasmonic sensing with the main emphasis on surface plasmon resonance (SPR) and surface-enhanced Raman spectroscopy (SERS) over the past decade. The main focus is on the synthesis of silver nanostructured substrates via physical vapor deposition and chemical synthesis routes and their applications in each sensing regime. A comprehensive review of recent literature on various possible silver nanostructures prepared through these methodologies is discussed and critically reviewed for various planar and optical fiber-based substrates.
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10
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He D, Wang Z, Zeng X, Fan J, Ren L, Du G, Sun R, Zeng X. Interfacial Coordination Interaction Enables Soft Elastomer Composites High Thermal Conductivity and High Toughness. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33912-33921. [PMID: 35849067 DOI: 10.1021/acsami.2c09761] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Soft elastomers have attracted wide applications, such as soft electronic devices and soft robotics, due to their ability to undergo large deformation with a small external force. Most elastomers suffer from poor toughness and thermal conductivity, which limits their use. The addition of inorganic fillers can enhance the thermal conductivity and toughness, but it deteriorates the softness (low Young's modulus and high stretchability). Integrating thermal conductivity, toughness, and softness into one elastomer is still a challenge. Here, we report a strategy of interfacial coordination interaction to achieve soft elastomer composites with high thermal conductivity and high toughness. We demonstrate the strategy by using poly(lipoic acid) elastomer and silver-coated aluminum filler as model, where silver-sulfur coordination cross-links are formed at the interface. The resultant elastomer composite shows high streachability (450%), high thermal conductivity (2.35 W m-1 K-1), low modulus (321 kPa), and high toughness (3496 J m-2), which cannot be achieve in existing elastomers. The time domain thermoreflectance technique demonstrates that the silver-sulfur coordination interaction lowers the interfacial thermal resistance, resulting in enhanced thermal conductivity of the elastomer composites. The excellent softness stems from lower bonding energy of the silver-sulfur coordination cross-links compared with covalent chemical cross-links. The high toughness also benefits from the interfacial silver-sulfur coordination interaction that can dissipate more energy upon deformation. We further demonstrate the potential application of the thermally conductive, tough, and soft elastomer composites for thermal management of chip and soft electronic devices.
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Affiliation(s)
- Dongyi He
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Zhenyu Wang
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Xiangliang Zeng
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Jianfeng Fan
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Linlin Ren
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Guoping Du
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China
| | - Rong Sun
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Xiaoliang Zeng
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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11
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Jurkiewicz K, Kamiński M, Bródka A, Burian A. Atomistic origin of nano-silver paracrystalline structure: molecular dynamics and x-ray diffraction studies. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:375401. [PMID: 35772380 DOI: 10.1088/1361-648x/ac7d84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
Classical molecular dynamics (MD) and x-ray diffraction (XRD) have been used to establish the origin of the paracrystalline structure of silver nanoparticles at the atomic scale. Models based on the face-centred cubic structure have been computer generated and their atomic arrangements have been optimized by the MD with the embedded-atom model (EAM) potential and its modified version (MEAM). The simulation results are compared with the experimental XRD data in reciprocal and real spaces, i.e. the structure factor and the pair distribution function. The applied approach returns the structural models, defined by the Cartesian coordinates of the constituent atoms. It has been found that most of the structural features of Ag nanoparticles are better reproduced by the MEAM. The presence of vacancy defects in the structure of the Ag nanoparticles has been considered and the average concentration of vacancies is estimated to be 3 at.%. The average nearest-neighbour Ag-Ag distances and the coordination numbers are determined and compared with the values predicted for the bulk Ag, demonstrating a different degree of structural disorder on the surface and in the core, compared to the bulk crystalline counterpart. It has been shown that the paracrystalline structure of the Ag nanoparticles has origin in the surface disorder and the disorder generated by the presence of the vacancy defects. Both sources lead to network distortion that propagates proportionally to the square root of the interatomic distances.
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Affiliation(s)
- Karolina Jurkiewicz
- A. Chełkowski Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
- Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland
| | - Michał Kamiński
- Deutsches Elektronen-Synchrotron, Photon Science, Notkestraße 85, D-22607 Hamburg, Germany
| | - Aleksander Bródka
- A. Chełkowski Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
- Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland
| | - Andrzej Burian
- A. Chełkowski Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
- Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland
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12
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Qi X, Jin B, Cai B, Yan F, De Yoreo J, Chen CL, Pfaendtner J. Molecular Driving Force for Facet Selectivity of Sequence-Defined Amphiphilic Peptoids at Au-Water Interfaces. J Phys Chem B 2022; 126:5117-5126. [PMID: 35763341 DOI: 10.1021/acs.jpcb.2c02638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Shape-controlled colloidal nanocrystal syntheses often require facet-selective solution-phase chemical additives to regulate surface free energy, atom addition/migration fluxes, or particle attachment rates. Because of their highly tunable properties and robustness to a wide range of experimental conditions, peptoids represent a very promising class of next-generation functional additives for control over nanocrystal growth. However, understanding the origin of facet selectivity at the molecular level is critical to generalizing their design. Herein we employ molecular dynamics simulations and biased sampling methods and report stronger selectivity to Au(111) than to Au(100) for Nce3Ncp6, a peptoid that has been shown to assist the formation of 5-fold twinned Au nanostars. We find that facet selectivity is achieved through synergistic effects of both peptoid-surface and solvent-surface interactions. Moreover, the amphiphilic nature of Nce3Ncp6 together with the order of peptoid-peptoid and peptoid-surface binding energies, that is, peptoid-Au(100) < peptoid-peptoid < peptoid-Au(111), further amplifies its distinct collective behavior on different Au surfaces. Our studies provide a fundamental understanding of the molecular origin of facet-selective adsorption and highlight the possibility of future designs and uses of sequence-defined peptoids for predictive syntheses of nanocrystals with designed shapes and properties.
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Affiliation(s)
- Xin Qi
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Biao Jin
- Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Bin Cai
- Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Feng Yan
- Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - James De Yoreo
- Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Chun-Long Chen
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States.,Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jim Pfaendtner
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States.,Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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13
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Fu X, Sun Z, Ji S, Liu F, Feng M, Yoo BK, Zhu Y. Nanoscale-Femtosecond Imaging of Evanescent Surface Plasmons on Silver Film by Photon-Induced Near-Field Electron Microscopy. NANO LETTERS 2022; 22:2009-2015. [PMID: 35226510 DOI: 10.1021/acs.nanolett.1c04774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Surface plasmons on silver nanostructures have a broad range of tunable resonance properties in visible and near-infrared regimes, which possess wide applications in nanophotonics and optoelectronics. Here we use a femtosecond laser to excite surface plasmons on a silver film and trace the subsequent transient dynamics via photon-induced near-field electron microscopy (PINEM). A polarization experiment of PINEM demonstrates a conspicuous polarization dependence of the transient surface plasmon field on the silver film; however, unlike silver nanowires and nanorods, there is no polarization dependence for the PINEM intensity. This compelling finding suggests a thin film platform can be more easily used to identify the temporal and spatial overlaps between the pump laser and probe electron pulses in 4D ultrafast electron microscopy (UEM). Our work illustrates the femtosecond excitation and transient behavior of the surface plasmons on silver film and paves a universal, simple way for identifying the time zero in 4D UEM.
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Affiliation(s)
- Xuewen Fu
- Ultrafast Electron Microscopy Laboratory, The MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, China
| | - Zepeng Sun
- Ultrafast Electron Microscopy Laboratory, The MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, China
| | - Shaozheng Ji
- Ultrafast Electron Microscopy Laboratory, The MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, China
| | - Fang Liu
- Ultrafast Electron Microscopy Laboratory, The MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, China
| | - Min Feng
- Ultrafast Electron Microscopy Laboratory, The MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, China
| | - Byung-Kuk Yoo
- Physical Biology Center for Ultrafast Science and Technology, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, United States
| | - Yimei Zhu
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
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14
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Bapat MS, Singh H, Shukla SK, Singh PP, Vo DVN, Yadav A, Goyal A, Sharma A, Kumar D. Evaluating green silver nanoparticles as prospective biopesticides: An environmental standpoint. CHEMOSPHERE 2022; 286:131761. [PMID: 34375828 DOI: 10.1016/j.chemosphere.2021.131761] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 07/12/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
The current method of agriculture entails the usage of excessive amounts of pesticides and fertilizers. The blatant use of conventional pesticides and fertilizers over several decades has led to their bioaccumulation with adverse effects on soil biodiversity and the development of resistance by pests. With the decline in clinically useful antibiotics and increase in multi drug resistant microbes, it is imperative to develop new and effective antimicrobial therapies. Growing awareness and demand for efficacious biorational pesticides are on the rise. Silver nanoparticles are widely known antimicrobials and have been in use for several purposes for a long time. This work reviews the implications of applying silver nanoparticles in agriculture and their possible consequences. The physiological and biochemical changes in plants due to the uptake of silver nanoparticles as a consequence of its morphology, capping biomolecules and method of application are comprehensively discussed in this review article. Studies on tolerance levels or stress due to silver nanoparticles by variation in concentration/doses on diverse flora and fauna are also analyzed here. Further, phytotoxicity and genotoxicity due to the metal as well as its transformation in soil, water and sludge are taken into account. We also gauge the potential of biogenic silver nanoparticles-viable antimicrobial agents for enhanced applications in agriculture as biopesticides.
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Affiliation(s)
- Malini S Bapat
- Cummins College of Engineering for Women, Affiliated to Savitribai Phule Pune University, Pune, 411052, India.
| | - Hema Singh
- Defence Institute of Advanced Technology, Girinagar, Pune, 411025, India
| | - Sudheesh K Shukla
- Department of Biomedical Engineering, School of Biological Engineering and Life Sciences, Shobhit University, Meerut, 250110, India
| | | | - Dai-Viet N Vo
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, 755414, Viet Nam
| | - Alpa Yadav
- Department of Applied Chemistry, School of Vocational Studies & Applied Sciences, Gautam Budha University, Greater Noida, Uttar Pradesh, 201308, India
| | - Abhineet Goyal
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Ajit Sharma
- School of Chemical Engineering and Physical Science, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Deepak Kumar
- School of Chemical Engineering and Physical Science, Lovely Professional University, Phagwara, Punjab, 144411, India.
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15
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Chen Z, Fichthorn KA. Adsorption of alkylamines on Cu surfaces: identifying ideal capping molecules using first-principles calculations. NANOSCALE 2021; 13:18536-18545. [PMID: 34730161 DOI: 10.1039/d1nr05759f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We used dispersion-corrected density-functional theory to perform an in silico search over a series of primary alkylamines, including linear, branched, and cyclic molecules, to identify capping molecules for shape-selective Cu nanocrystal synthesis. We identify several attributes associated with successful capping agents. Generally, molecules with good geometric matching to the Cu surfaces possessed the strongest molecule-surface chemical bonds. However, non-bonding van der Waals interactions and molecular packing constraints can play a more significant role in determining the overall binding energy, the surface coverage, and the likely efficacy of the capping molecule. Though nearly all the molecules exhibited stronger binding to Cu(100) than to Cu(111), all predicted Wulff shapes are primarily {111}-faceted, based on ab initio thermodynamics calculations. From predicted capping-molecule densities on Cu(100) and Cu(111) for various solution environments, we identified several candidate molecules to produce {100}- or {111}-faceted nanocrystals with kinetic shapes, based on synthesis conditions used to grow Cu nanowires with ethylenediamine capping agent. Our study reveals the complexity of capping-molecule binding and important considerations that go into the selection of a successful capping agent.
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Affiliation(s)
- Zihao Chen
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA.
| | - Kristen A Fichthorn
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA.
- Department of Physics, Pennsylvania State University, University Park, PA 16802, USA
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16
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Anisotropic Silver Nanomaterials by Photochemical Reactions: Synthesis and Applications. NANOMATERIALS 2021; 11:nano11092226. [PMID: 34578542 PMCID: PMC8466297 DOI: 10.3390/nano11092226] [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: 08/05/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 02/04/2023]
Abstract
Silver-based nanoparticles have attracted a broad interest due to their outstanding optical and chemical properties and have been studied for applications in many fields. While different synthetic routes have been explored, photochemical synthesis has attracted a special interest for its limited use of chemicals and ease of control over the shape and size of the nanoparticles. This paper reviews the main factors affecting the synthesis of anisotropic silver nanoparticles, such as irradiation wavelength, pH, etc., and the role of specific key molecules, such as citrate. The paper is structured into different sections depending on how the synthesis is initiated; thus, after the introduction, the photochemical conversion reaction starting from nanoparticles, or seeds, obtained chemically, is covered, followed by reactions from nanoparticles obtained by laser ablation by seedless reactions. After that, the applications proposed for anisotropic nanoparticles obtained by the methods discussed in the previous sections are briefly covered and, finally, the conclusions and the author’s perspectives are given.
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17
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Chen Z, Fichthorn KA. Adsorption of ethylenediamine on Cu surfaces: attributes of a successful capping molecule using first-principles calculations. NANOSCALE 2021; 13:13529-13537. [PMID: 34477757 DOI: 10.1039/d1nr03173b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The shape-controlled synthesis of Cu nanocrystals can benefit a wide range of applications, though challenges exist in achieving high and selective yields to a particular shape. Capping agents play a pivotal role in controlling shape, but their exact role remains ambiguous. In this study, the adsorption of ethylenediamine (EDA) on Cu(100) and Cu(111) was investigated with quantum density functional theory (DFT) to reveal the complex roles of EDA in promoting penta-twinned Cu nanowire growth. We find EDA has stronger binding on Cu(100) than on Cu(111), which agrees the general expectation that penta-twinned Cu nanowires express facets with stronger capping-molecule binding. Despite this stronger binding, ab initio thermodynamics reveals the surface energy of EDA-covered Cu(111) is lower than that EDA-covered Cu(100) at all solution-phase EDA chemical potentials, so there is no thermodynamic driving force for penta-twinned nanowires. We also investigated the capability of EDA to protect Cu surfaces from oxidation in water by quantifying energy barriers for a water molecule to diffuse through EDA layers on Cu(100) and Cu(111). The energy barrier on Cu(100) is significantly lower, which supports observations of faster oxidation of Cu(100) in electrochemical experiments. Thus, we elucidate another possible function of a capping agent - to enable selective oxidation of crystal facets. This finding adds to the general understanding of successful attributes of capping agents for shape-selective nanocrystal growth.
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Affiliation(s)
- Zihao Chen
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
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18
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Farkaš B, Terranova U, de Leeuw NH. The mechanism underlying the functionalisation of cobalt nanoparticles by carboxylic acids: a first-principles computational study. J Mater Chem B 2021; 9:4915-4928. [PMID: 34100480 DOI: 10.1039/d0tb02928a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The promise of biocompatible magnetic nanoparticles with high magnetic saturation in the implementation as drug carriers and hyperthermia agents has generated significant interest in functionalised cobalt nanoparticles. Carboxylic acid coatings on metallic nanoparticles have been shown as an attractive option owing to their respectable stability and biocompatibility. However, only limited information is available on the molecular mechanism leading to the formation of such protective coatings. In this study, ab initio molecular dynamics simulations have been used to unravel the functionalisation mechanism starting from a neutral cobalt cluster and valeric acid molecules. Three stages were detected in the coating process: (i) rapid initial adsorption of acid molecules, (ii) simultaneous adsorption of new molecules and dissociation of those already interacting with the cluster, and, finally, (iii) grouping of dissociated hydrogen atoms and subsequent desorption of acid molecules. The fate of the hydrogen atoms was probed through a combination of static and dynamic ab initio modelling approaches, which predicted H2 generation with favourable energetics. A better understanding of the functionalisation and interaction mechanisms will aid the rational design of biocompatible cobalt nanoparticles for various applications.
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Affiliation(s)
- Barbara Farkaš
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK
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19
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SILICON-CONTAINING OLIGOMERIC AZOINITIATORS IN THE SYNTHESIS OF BLOCK COPOLYMERS. Polym J 2021. [DOI: 10.15407/polymerj.43.02.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A solvothermal synthetic pathway and functional polymer styabilizers was used for synthesis of fine silver structures of different architecture. Using polyvinylpyrrolidone as a stabilizer silver micronized wires with a diameter of 3,8–4,2 μm and aspect ratio of up to 30 were prepared. XRD technique was applied for qualitative determination of silver metal structures. New thermoresponse composite hydrogels with a structure of semi-IPNs were prepared from cross-linked polyvinyl alcohol, linear highly hydrophilic poly(2-ethyl-2-oxazoline) (PEtOx) and as-synthesized silver micro-sized wires. Effect of a structure and a composition of the polymer matrix, and inorganic anisotropic filler on structure arrangement of composite hydrogels were evaluated by DMA studies. A presence of linear hydrophilic PEtOx and anisotropic metal filler in PVA matrix reduces storage modulus Е’ from 275 to 222–230 MPa and increases loss modulus Е” up to 45,5 MPa at room temperature measurements that partially initiated by poor structuration ability of the composites under high solvation level of polymer matrices. Increasing temperature leads to redistribution of hydrogen bonds network and hybridization of PVA nad PEtOx macrochains and enhances energy dissipation ability of unfilled hydrogel. A filler due to conjugation with amine-functionalized PEtOx chains and its localization closed to a surface of metal supresses polymer-polymer interactions and elasticity parameters of composite matrix drops down. As a result, diffusion and permeability coefficients of composite hydrogels reaches 1,06–1,52·10–9 cm2/s and 0,83–1,09·10-9 g/(cm·s), respectively, that higher in comparison with cross-linked PVA matrices. A presence of hydrogen bonds of different energy in hydrogels provides an appearance of multiple relaxation transitions due to different macrochain mobility in a bulk of polymer matrix. Differences of temperature interval of LCTS for hydrogels were found from analysis Е”(T)/dT (62–70 °С) and Δχ(T)/dT (67–70 °С) dependencies are interrelated with kinetic pecularities of diffusion processes that are able to suppress a phase separation at the temperatures closed to LCTS. Phase inversion processes for hydrogel containing 5 % of PEtOx at LCTS are accompanied by desorption of 32–73 % of sorbate. Moreover, thermoresponsive properties of the hydrogels filled with metallic silver wires are higher than that of the unfilled semi-IPNs.
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20
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Höglund M, Garemark J, Nero M, Willhammar T, Popov S, Berglund LA. Facile Processing of Transparent Wood Nanocomposites with Structural Color from Plasmonic Nanoparticles. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2021; 33:3736-3745. [PMID: 34054216 PMCID: PMC8158850 DOI: 10.1021/acs.chemmater.1c00806] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/20/2021] [Indexed: 05/29/2023]
Abstract
Wood is an eco-friendly and abundant substrate and a candidate for functionalization by large-scale nanotechnologies. Infiltration of nanoparticles into wood, however, is hampered by the hierarchically structured and interconnected fibers in wood. In this work, delignified wood is impregnated with gold and silver salts, which are reduced in situ to plasmonic nanoparticles via microwave-assisted synthesis. Transparent biocomposites are produced from nanoparticle-containing wood in the form of load-bearing materials with structural color. The coloration stems from nanoparticle surface plasmons, which require low size dispersity and particle separation. Delignified wood functions as a green reducing agent and a reinforcing scaffold to which the nanoparticles attach, predesigning their distribution on the surface of fibrous "tubes". The nanoscale structure is investigated using scanning transmission electron microscopy (STEM), energy-dispersive spectroscopy (EDS), and Raman microscopy to determine particle size, particle distribution, and structure-property relationships. Optical properties, including response to polarized light, are of particular interest.
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Affiliation(s)
- Martin Höglund
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Jonas Garemark
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Mathias Nero
- Department
of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Tom Willhammar
- Department
of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Sergei Popov
- Department
of Applied Physics, KTH Royal Institute
of Technology, 114 19 Stockholm, Sweden
| | - Lars A. Berglund
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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21
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Sergievskaya A, O’Reilly A, Chauvin A, Veselý J, Panepinto A, De Winter J, Cornil D, Cornil J, Konstantinidis S. Magnetron sputter deposition of silver onto castor oil: The effect of plasma parameters on nanoparticle properties. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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22
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Wang M, Meng AC, Fu J, Foucher AC, Serra-Maia R, Stach EA, Detsi E, Pikul JH. Surface Facet Engineering in Nanoporous Gold for Low-Loading Catalysts in Aluminum-Air Batteries. ACS APPLIED MATERIALS & INTERFACES 2021; 13:13097-13105. [PMID: 33715346 DOI: 10.1021/acsami.0c20163] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The performance of metal-air batteries and fuel cells depends on the speed and efficiency of electrochemical oxygen reduction reactions at the cathode, which can be improved by engineering the atomic arrangement of cathode catalysts. It is, however, difficult to improve upon the performance of platinum nanoparticles in alkaline electrolytes with low-loading catalysts that can be manufactured at scale. Here, the authors synthesized nanoporous gold catalysts with increased (100) surface facets using electrochemical dealloying in sodium citrate surfactant electrolytes. These modified nanoporous gold catalysts achieved an 8% higher operating voltage and 30% greater power density in aluminum-air batteries over traditionally prepared nanoporous gold, and their performance was superior to commercial platinum nanoparticle electrodes at a 10 times lower mass loading. The authors used rotation disc electrode studies, backscattering of electrons, and underpotential deposition to show that the increased (100) facets improved the catalytic activity of citrate dealloyed nanoporous gold compared to conventional nanoporous gold. The citrate dealloyed samples also had the highest stability and least concentration of steps and kinks. The developed synthesis and characterization techniques will enable the design and synthesis of metal nanostructured catalysts with controlled facets for low-cost and mass production of metal-air battery cathodes.
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Affiliation(s)
- Min Wang
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Andrew C Meng
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jintao Fu
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Alexandre C Foucher
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Rui Serra-Maia
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Eric A Stach
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Eric Detsi
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - James H Pikul
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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23
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Wei Z, Xi Z, Vlasov S, Ayala J, Xia X. Nanocrystals of platinum-group metals as peroxidase mimics for in vitro diagnostics. Chem Commun (Camb) 2020; 56:14962-14975. [PMID: 33188672 DOI: 10.1039/d0cc06575g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Peroxidase mimics of nanoscale materials as alternatives to natural peroxidases have found widespread uses in biomedicine. Among various types of peroxidase mimics, platinum-group metal (PGM) nanocrystals have drawn considerable attention in recent years due to their superior properties. Particularly, PGM nanocrystals display high catalytic efficiencies, allow for facile surface modifications, and possess excellent stabilities. This feature article summarizes our recent work on development of PGM nanocrystals as peroxidase mimics and exploration of their applications in in vitro diagnostics. We begin with a brief introduction to controlled synthesis of PGM nanocrystals in solution phase. We then elaborate on a variety of physicochemical parameters that can be carefully tuned to optimize the peroxidase-like properties of PGM nanocrystals. Then, we highlight the applications of PGM nanocrystals in different in vitro diagnostic platforms. We conclude this article with personal perspectives on future research directions in this emerging field, where challenges and opportunities are remarked.
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Affiliation(s)
- Zhiyuan Wei
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, USA.
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24
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Marciniak L, Nowak M, Trojanowska A, Tylkowski B, Jastrzab R. The Effect of pH on the Size of Silver Nanoparticles Obtained in the Reduction Reaction with Citric and Malic Acids. MATERIALS 2020; 13:ma13235444. [PMID: 33260479 PMCID: PMC7730334 DOI: 10.3390/ma13235444] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/25/2020] [Accepted: 11/27/2020] [Indexed: 11/24/2022]
Abstract
In colloidal methods, the morphology of nanoparticles (size and shape) as well as their stability can be controlled by changing the concentration of the substrate, stabilizer, adding inorganic salts, changing the reducer/substrate molar ratio, and changing the pH and reaction time. The synthesis of silver nanoparticles was carried out according to the modified Lee and Meisel method in a wide pH range (from 2.0 to 11.0) using citric acid and malic acid, without adding any additives or stabilizers. Keeping the same reaction conditions as the concentration of acid and silver ions, temperature, and heating time, it was possible to determine the relationship between the reaction pH, the type of acid, and the size of the silver nanoparticles formed. Obtained colloids were analyzed by UV-Vis spectroscopy and investigated by means of Transmission Electron Microscope (TEM). The study showed that the colloids reduced with citric acid and malic acid are stable over time for a minimum of seven weeks. We observed that reactions occurred for citric acid from pH 6.0 to 11.0 and for malic acid from pH 7.0 to 11.0. The average size of the quasi-spherical nanoparticles changed with pH due to the increase of reaction rate.
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Affiliation(s)
- Lukasz Marciniak
- Faculty of Chemistry, Adam Mickiewicz University, 61-614 Poznan, Poland; (L.M.); (M.N.)
| | - Martyna Nowak
- Faculty of Chemistry, Adam Mickiewicz University, 61-614 Poznan, Poland; (L.M.); (M.N.)
| | - Anna Trojanowska
- Centre Tecnològic de Catalunya, Chemical Technologies Unit, Eurecat, 43007 Tarragona, Spain; (A.T.); (B.T.)
| | - Bartosz Tylkowski
- Centre Tecnològic de Catalunya, Chemical Technologies Unit, Eurecat, 43007 Tarragona, Spain; (A.T.); (B.T.)
| | - Renata Jastrzab
- Faculty of Chemistry, Adam Mickiewicz University, 61-614 Poznan, Poland; (L.M.); (M.N.)
- Correspondence: ; Tel.: +48-6‐9328‐8787
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25
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Vu XH, Dien ND, Ha Pham TT, Trang TT, Ca NX, Tho PT, Vinh ND, Van Do P. The sensitive detection of methylene blue using silver nanodecahedra prepared through a photochemical route. RSC Adv 2020; 10:38974-38988. [PMID: 35518425 PMCID: PMC9057378 DOI: 10.1039/d0ra07869g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 10/19/2020] [Indexed: 01/31/2023] Open
Abstract
In this work, we have carried out systematic studies on the critical role of polyvinyl pyrrolidone (PVP) and citrate in the well-known chemical reduction route to synthesize silver nanodecahedra (AgND). Silver nitrate (AgNO3) was used as silver source, which can be directly converted to metallic silver after being reduced by sodium borohydride (NaBH4) under blue light-emitting diode (LED) irradiation (λ max = 465 nm), and polyvinyl pyrrolidone (PVP) as a capping agent to assist the growth of AgND. The obtained products were silver nanodecahedra of excellent uniformity and stability with high efficiency and yield. The results showed that PVP acted as a capping agent to stabilize the silver nanoparticles, prolonging the initiation time required for nanodecahedra nucleation, thus inducing anisotropic growth, allowing the size and morphology of the AgND to be controlled successfully. This improved understanding allows a consistent process for the synthesis of AgND with significantly enhanced reproducibility to be developed and the formation mechanism of these nanostructures to be elucidated. This is a simple, cost-effective and easily reproducible method for creating AgND. The typical absorption maxima in the UV-vis spectroscopy of Ag seeds was λ max ∼400 nm and that of AgND was λ max ∼480 nm. The size of the prepared AgND was in the range of 60-80 nm. SEM images confirmed the uniform and high density of AgND when the concentration of PVP was 0.5 mM. The XRD pattern showed that the final product of AgND was highly crystallized. In addition, the prepared AgND can be used to detect methylene blue (MB) in a sensitive manner with good reproducibility and stability using Surface-Enhanced Raman Scattering (SERS) phenomenon. Out of the obtained products, the AgND prepared with 50 min blue LED light irradiation (AgND-50) displayed the strongest SERS signal. Interestingly, MB in diluted solution can be detected with a concentration as low as 10-7 M (the limit of detection, LOD) and the linear dependence between SERS intensity and the MB concentration occurred in the range from 10-7 to 10-6 M. The enhancement factor (EF) of the SERS effect was about 1.602 × 106 with a MB concentration of 10-7 M using 532 nm laser excitation.
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Affiliation(s)
- Xuan Hoa Vu
- Faculty of Physics, TNU-University of Sciences Tan Thinh ward Thai Nguyen city Vietnam
| | - Nguyen Dac Dien
- Faculty of Labour Protection, Vietnam Trade Union University 169 Tay Son street Hanoi city Vietnam
| | - Thi Thu Ha Pham
- Faculty of Chemistry, TNU-University of Sciences Tan Thinh ward Thai Nguyen city Vietnam
| | - Tran Thu Trang
- Faculty of Physics, TNU-University of Sciences Tan Thinh ward Thai Nguyen city Vietnam
| | - N X Ca
- Faculty of Physics, TNU-University of Sciences Tan Thinh ward Thai Nguyen city Vietnam
| | - P T Tho
- Faculty of Physics, TNU-University of Sciences Tan Thinh ward Thai Nguyen city Vietnam
| | - Nguyen Dinh Vinh
- Faculty of Chemistry, TNU-University of Sciences Tan Thinh ward Thai Nguyen city Vietnam
| | - Phan Van Do
- Thuyloi University 175 Tay Son, Dong Da Hanoi Vietnam
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26
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Synthesis of Au, Ag, and Au-Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol. NANOMATERIALS 2020; 10:nano10091885. [PMID: 32962292 PMCID: PMC7559643 DOI: 10.3390/nano10091885] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/12/2020] [Accepted: 09/16/2020] [Indexed: 12/12/2022]
Abstract
Plant extract of Pulicaria undulata (L.) was used as both reducing agent and stabilizing ligand for the rapid and green synthesis of gold (Au), silver (Ag), and gold–silver (Au–Ag) bimetallic (phase segregated/alloy) nanoparticles (NPs). These nanoparticles with different morphologies were prepared in two hours by stirring corresponding metal precursors in the aqueous solution of the plant extracts at ambient temperature. To infer the role of concentration of plant extract on the composition and morphology of NPs, we designed two different sets of experiments, namely (i) low concentration (LC) and (ii) high concentration (HC) of plant extract. In the case of using low concentration of the plant extract, irregular shaped Au, Ag, or phase segregated Au–Ag bimetallic NPs were obtained, whereas the use of higher concentrations of the plant extract resulted in the formation of spherical Au, Ag, and Au–Ag alloy NPs. The as-prepared Au, Ag, and Au–Ag bimetallic NPs showed morphology and composition dependent catalytic activity for the reduction of 4-nitrophenol (4-NPh) to 4-aminophenol (4-APh) in the presence of NaBH4. The bimetallic Au–Ag alloy NPs showed the highest catalytic activity compared to all other NPs.
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27
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Liu R, Hao J, Li J, Wang S, Liu H, Zhou Z, Delville MH, Cheng J, Wang K, Zhu X. Causal Inference Machine Learning Leads Original Experimental Discovery in CdSe/CdS Core/Shell Nanoparticles. J Phys Chem Lett 2020; 11:7232-7238. [PMID: 32787235 DOI: 10.1021/acs.jpclett.0c02115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The synthesis of CdSe/CdS core/shell nanoparticles was revisited with the help of a causal inference machine learning framework. The tadpole morphology with 1-2 tails was experimentally discovered. The causal inference model revealed the causality between the oleic acid (OA), octadecylphosphonic acid (ODPA) ligands, and the detailed tail shape of the tadpole morphology. Further, with the identified causality, a neural network was provided to predict and directly lead to the original experimental discovery of new tadpole-shaped structures. An entropy-driven nucleation theory was developed to understand both the ligand and temperature dependent experimental data and the causal inference from the machine learning framework. This work provided a vivid example of how the artificial intelligence technology, including machine learning, could benefit the materials science research for the discovery.
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Affiliation(s)
- Rulin Liu
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Junjie Hao
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, Pessac F-33608, France
| | - Jiagen Li
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Shujie Wang
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Haochen Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ziming Zhou
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | | | - Jiaji Cheng
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Kai Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xi Zhu
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
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28
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Yang T, Shi Y, Janssen A, Xia Y. Oberflächenstabilisatoren und ihre Rolle bei der formkontrollierten Synthese von kolloidalen Metall‐Nanokristallen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201911135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tung‐Han Yang
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Yifeng Shi
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Annemieke Janssen
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
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29
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Sengupta D, Goswami S, Banerjee R, Guberman-Pfeffer MJ, Patra A, Dutta A, Pramanick R, Narasimhan S, Pradhan N, Batista V, Venkatesan T, Goswami S. Size-selective Pt siderophores based on redox active azo-aromatic ligands. Chem Sci 2020; 11:9226-9236. [PMID: 34123171 PMCID: PMC8163438 DOI: 10.1039/d0sc02683b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We demonstrate a strategy inspired by natural siderophores for the dissolution of platinum nanoparticles that could enable their size-selective synthesis, toxicological assessment, and the recycling of this precious metal. From the fabrication of electronics to biomedical diagnosis and therapy, PtNPs find increasing use. Mitigating concerns over potential human toxicity and the need to recover precious metal from industrial debris motivates the study of bio-friendly reagents to replace traditional harsh etchants. Herein, we report a family of redox-active siderophore-viz. π-acceptor azo aromatic ligands (L) that spontaneously ionize and chelate Pt atoms selectively from nanoparticles of size ≤6 nm. The reaction produces a monometallic diradical complex, PtII(L˙-)2, isolated as a pure crystalline compound. Density functional theory provides fundamental insights on the size dependent PtNP chemical reactivity. The reported findings reveal a generalized platform for designing π-acceptor ligands to adjust the size threshold for dissolution of Pt or other noble metals NPs. Our approach may, for example, be used for the generation of Pt-based therapeutics or for reclamation of Pt nano debris formed in catalytic converters or electronic fabrication industries.
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Affiliation(s)
- Debabrata Sengupta
- School of Chemical Sciences, Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Sreetosh Goswami
- NUSNNI-NanoCore, National University of Singapore Singapore 117411 Singapore .,NUS Graduate School for Integrative Sciences and Engineering (NGS), National University of Singapore Singapore 117456 Singapore.,Department of Physics, National University of Singapore Singapore 117542 Singapore
| | - Rajdeep Banerjee
- Theoretical Sciences Unit, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur Bangalore 560064 India
| | | | - Abhijeet Patra
- NUSNNI-NanoCore, National University of Singapore Singapore 117411 Singapore
| | - Anirban Dutta
- School of Materials Sciences, Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Rajib Pramanick
- School of Chemical Sciences, Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Shobhana Narasimhan
- Theoretical Sciences Unit, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur Bangalore 560064 India
| | - Narayan Pradhan
- School of Materials Sciences, Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Victor Batista
- Department of Chemistry, Yale University 225 Prospect Street New Haven Connecticut 06520 USA .,Energy Sciences Institute, Yale University 810 West Campus Drive West Haven Connecticut 06516 USA
| | - T Venkatesan
- NUSNNI-NanoCore, National University of Singapore Singapore 117411 Singapore .,NUS Graduate School for Integrative Sciences and Engineering (NGS), National University of Singapore Singapore 117456 Singapore.,Department of Physics, National University of Singapore Singapore 117542 Singapore.,Department of Electrical and Computer Engineering, National University of Singapore Singapore 117583 Singapore.,Department of Materials Science and Engineering, National University of Singapore Singapore 117575 Singapore
| | - Sreebrata Goswami
- School of Chemical Sciences, Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
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30
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Shi Y, Lyu Z, Zhao M, Chen R, Nguyen QN, Xia Y. Noble-Metal Nanocrystals with Controlled Shapes for Catalytic and Electrocatalytic Applications. Chem Rev 2020; 121:649-735. [DOI: 10.1021/acs.chemrev.0c00454] [Citation(s) in RCA: 191] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yifeng Shi
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Zhiheng Lyu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ming Zhao
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ruhui Chen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Quynh N. Nguyen
- Department of Chemistry, Agnes Scott College, Decatur, Georgia 30030, United States
| | - Younan Xia
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
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31
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da Silva RTP, Petri MV, Valencia EY, Camargo PHC, de Torresi SIC, Spira B. Visible light plasmon excitation of silver nanoparticles against antibiotic-resistant Pseudomonas aeruginosa. Photodiagnosis Photodyn Ther 2020; 31:101908. [PMID: 32634655 DOI: 10.1016/j.pdpdt.2020.101908] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/11/2020] [Accepted: 06/26/2020] [Indexed: 12/22/2022]
Abstract
The interaction of metallic nanoparticles with light excites a local surface plasmon resonance (LSPR). This phenomenon enables the transfer of hot electrons to substrates that release Reactive Oxygen Species (ROS). In this context, the present study aimed at enhancing the antibacterial effect of citrate-covered silver nanoparticles (AgNPs) by LSPR excitation with visible LED. AgNPs possess excellent antimicrobial properties against Pseudomonas aeruginosa, one of the most refractory organisms to antibiotic treatment. The Minimum Inhibitory Concentration (MIC) of the AgNPs was 10 μg/ml under dark conditions and 5 μg/ml under light conditions. The combination of light and AgNPs led to 100% cell death after 60 min. Flow cytometry quantification showed that bacteria treated with LSPR-stimulated AgNPs displayed 4.8 times more ROS. This significant increase in ROS possibly accounts for most of the antimicrobial effect of the AgNPs. In addition, light exposition caused a small release of silver ions (0.4%) suggesting that silver ions may play a secondary role in P. aeruginosa death. Overall, the results presented here show that LSPR stimulation of AgNPs by visible light enhances the antimicrobial activity of silver nanoparticles and can be an alternative for the treatment of topic infections caused by antibiotic-resistant bacteria such as P. aeruginosa.
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Affiliation(s)
- Rafael T P da Silva
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Marcos V Petri
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Estela Y Valencia
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Pedro H C Camargo
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Susana I C de Torresi
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Beny Spira
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Brazil.
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32
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Yang T, Shi Y, Janssen A, Xia Y. Surface Capping Agents and Their Roles in Shape‐Controlled Synthesis of Colloidal Metal Nanocrystals. Angew Chem Int Ed Engl 2020; 59:15378-15401. [DOI: 10.1002/anie.201911135] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Tung‐Han Yang
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Yifeng Shi
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Annemieke Janssen
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
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33
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Liu H, Chen M, Wei D, Ma Y, Wang F, Zhang Q, Shi J, Zhang H, Peng J, Liu G, Zhang S. Smart Removal of Dye Pollutants via Dark Adsorption and Light Desorption at Recyclable Bi 2O 2CO 3 Nanosheets Interface. ACS APPLIED MATERIALS & INTERFACES 2020; 12:20490-20499. [PMID: 32290647 DOI: 10.1021/acsami.0c02848] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The adsorbents for water treatment and purification are commonly not recyclable because of the lack of a reagent-less "switch" to readily release the adsorbed compounds. Herein, the interface of Bi2O2CO3 (BOC) nanosheets is designed, synthesized, and modified with citric acid, namely, modified Bi2O2CO3 (m-BOC). The m-BOC is able to selectively adsorb methylene blue (MB) in the dark and the adsorbed MB could be released in the light from m-BOC without the addition of any chemicals. The adsorption mechanism is attributed to the electrostatic attraction between positively charged MB and the negatively charged surface of m-BOC. In contrast, the desorption of MB has resulted from the photo-induced charge redistribution on the surface of m-BOC, which unlocks the coordination bond between m-BOC and the carboxylic group. As a result, BOC is recycled. Such a mechanism was verified by both experimental investigation and DFT calculation. This work provides a promising interfacial engineering strategy for the remediation of dye-polluted water and smart separation in chemical engineering.
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Affiliation(s)
- Haijin Liu
- School of Environment, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang, Henan Province 453007, PR China
- Centre for Clean Environment and Energy, School of Environment and Science, Gold Coast Campus, Griffith University, Queensland 4222, Australia
| | - Min Chen
- School of Environment, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang, Henan Province 453007, PR China
| | - Dandan Wei
- School of Environment, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang, Henan Province 453007, PR China
- Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Yaqiang Ma
- School of Environment, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang, Henan Province 453007, PR China
| | - Fengliang Wang
- Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Qianxin Zhang
- Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Jialu Shi
- School of Environment, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang, Henan Province 453007, PR China
| | - Hui Zhang
- School of Environment, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang, Henan Province 453007, PR China
| | - Jianbiao Peng
- School of Environment, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang, Henan Province 453007, PR China
| | - Guoguang Liu
- Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Shanqing Zhang
- Centre for Clean Environment and Energy, School of Environment and Science, Gold Coast Campus, Griffith University, Queensland 4222, Australia
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34
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Dong B, Liu G, Zhou J, Wang J, Jin R. Transformation of silver ions to silver nanoparticles mediated by humic acid under dark conditions at ambient temperature. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121190. [PMID: 31541953 DOI: 10.1016/j.jhazmat.2019.121190] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 06/24/2019] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Abstract
The conversion of silver materials in environments would impact their toxicity and risk. Previous studies have reported that silver ions (Ag+) could be reduced to silver nanoparticles (AgNPs) by natural organic matters (NOM) under sunlight or heating conditions. However, whether such reaction could occur in darkness at ambient temperature and the transformation mechanism were unclear. This study found that Ag+ at environmentally relevant concentrations (as low as 1 μg/L) could be reduced to AgNPs by Suwannee River humic acid (SRHA) in darkness at 30 °C. The reaction mechanism probed by X-ray absorption fine structure spectroscopy revealed that Ag+ was first bound to the carboxylic groups of SRHA to form Ag+-SRHA ligands, which were then reduced to metallic Ag. The increase of pH (6-9) and the coexistence of formate, acetate, carbonate, and sulfate promoted the formation of AgNPs. Besides, the formed AgNPs would coalesce to large aggregates under acidic conditions or in the presence of sulfate. These results suggest that the dark transformation of Ag+ to AgNPs mediated by NOM could occur in environments and are important for the better understanding of the natural origin of AgNPs.
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Affiliation(s)
- Bin Dong
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Guangfei Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| | - Jiti Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jing Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Ruofei Jin
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
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35
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Zhang J, Wang C, Wang M, Xu T. In situ synthesis of silver nanoparticles on periodic supports as highly active and flexible surface-enhanced Raman spectroscopy substrates. APPLIED OPTICS 2020; 59:662-668. [PMID: 32225192 DOI: 10.1364/ao.378734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/04/2019] [Indexed: 06/10/2023]
Abstract
With regard to surface-enhanced Raman spectroscopy (SERS), the preparation of substrates with high homogeneity and low cost remains a challenge. In this paper, cheap commercial DVD-R plates were adopted as supports, whose 3D periodic structure was transferred onto the surface of flexible polydimethylsiloxane (PDMS) easily. Then, silver nanoparticles were grown both on DVD and PDMS substrates by the in situ reduction method, and the SERS performances of these two substrates were investigated. The results confirmed that the PDMS-based substrate exhibited better enhancement performance and higher uniformity (RSD=4.16%). In addition, due to the flexibility and transparency of PDMS, it is not restricted by the surface shape of the object when applied in in situ detection. This low-cost, simple method will be widely used in the in situ detection of surfaces of objects of any shape.
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36
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Reactivity and Chemical Sintering of Carey Lea Silver Nanoparticles. NANOMATERIALS 2019; 9:nano9111525. [PMID: 31717758 PMCID: PMC6915523 DOI: 10.3390/nano9111525] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 11/17/2022]
Abstract
Carey Lea silver hydrosol is a rare example of very concentrated colloidal solutions produced with citrate as only protective ligands, and prospective for a wide range of applications, whose properties have been insufficiently studied up to now. Herein, the reactivity of the immobilized silver nanoparticles toward oxidation, sulfidation, and sintering upon their interaction with hydrogen peroxide, sulfide ions, and chlorocomplexes of Au(III), Pd(II), and Pt(IV) was investigated using SEM and X-ray photoelectron spectroscopy (XPS). The reactions decreased the number of carboxylic groups of the citrate-derived capping and promoted coalescence of 7 nm Ag NPs into about 40 nm ones, excluding the interaction with hydrogen peroxide. The increased nanoparticles form loose submicrometer aggregates in the case of sulfide treatment, raspberry-like micrometer porous particles in the media containing Pd(II) chloride, and densely sintered particles in the reaction with inert H2PtCl6 complexes, probably via the formation of surface Ag-Pt alloys. The exposure of Ag NPs to HAuCl4 solution produced compact Ag films along with nanocrystals of Au metal and minor Ag and AgCl. The results are promising for chemical ambient temperature sintering and rendering silver-based nanomaterials, for example, for flexible electronics, catalysis, and other applications.
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37
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Hossain MM, Polash SA, Takikawa M, Shubhra RD, Saha T, Islam Z, Hossain S, Hasan MA, Takeoka S, Sarker SR. Investigation of the Antibacterial Activity and in vivo Cytotoxicity of Biogenic Silver Nanoparticles as Potent Therapeutics. Front Bioeng Biotechnol 2019; 7:239. [PMID: 31649922 PMCID: PMC6794407 DOI: 10.3389/fbioe.2019.00239] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 09/11/2019] [Indexed: 11/13/2022] Open
Abstract
Biogenic nanoparticles are the smartest weapons to deal with the multidrug-resistant "superbugs" because of their broad-spectrum antibacterial propensity as well as excellent biocompatibility. The aqueous biogenic silver nanoparticles (Aq-bAgNPs) and ethanolic biogenic silver nanoparticles (Et-bAgNPs) were synthesized using aqueous and ethanolic extracts of Andrographis paniculata stem, respectively, as reducing agents. Electron microscopic images confirmed the synthesis of almost spherical shaped biogenic silver nanoparticles (bAgNPs). The zeta potentials of the nanoparticles were negative and were -22 and -26 mV for Aq-bAgNPs and Et-bAgNPs, respectively. The antibacterial activity of bAgNPs was investigated against seven pathogenic (i.e., enteropathogenic Escherichia coli, Salmonella typhi, Staphylococcus aureus, Vibrio cholerae, Enterococcus faecalis, Hafnia alvei, Acinetobacter baumannii) and three nonpathogenic (i.e., E. coli DH5α, E. coli K12, and Bacillus subtilis) bacteria at different time points (i.e., 12, 16, 20, and 24 h) in a dose-dependent manner (i.e., 20, 40, and 60 μg) through broth dilution assay, disk diffusion assay, CellToxTM Green uptake assay, and trypan blue dye exclusion assay. The lowest minimum inhibitory concentration value for both the bAgNPs was 0.125 μg. Et-bAgNPs showed the highest antibacterial activity against S. aureus at 60 μg after 16 h and the diameter of inhibited zone was 28 mm. Lipid peroxidation assay using all the bacterial strains revealed the formation of malondialdehyde-thiobarbituric acid adduct due to the oxidation of cell membrane fatty acids by bAgNPs. The bAgNPs showed excellent hemocompatibility against human as well as rat red blood cells. Furthermore, there was no significant toxicity observed when the levels of rat serum ALT, AST, γ-GT (i.e., liver function biomarkers), and creatinine (i.e., kidney function biomarker) were determined.
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Affiliation(s)
- Md Monir Hossain
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka, Bangladesh
| | - Shakil Ahmed Polash
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka, Bangladesh
| | - Masato Takikawa
- Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Razib Datta Shubhra
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka, Bangladesh
| | - Tanushree Saha
- Department of Textile Engineering, Dhaka University of Engineering and Technology, Gazipur, Bangladesh
| | - Zinia Islam
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka, Bangladesh
| | - Sharif Hossain
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka, Bangladesh
| | - Md Ashraful Hasan
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Dhaka, Bangladesh
| | - Shinji Takeoka
- Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Satya Ranjan Sarker
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka, Bangladesh
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38
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Preparation of flaky dihydrate zinc oxalate particles by controlled chelating double-jet precipitation. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Jin W, Liang G, Zhong Y, Yuan Y, Jian Z, Wu Z, Zhang W. The Influence of CTAB-Capped Seeds and Their Aging Time on the Morphologies of Silver Nanoparticles. NANOSCALE RESEARCH LETTERS 2019; 14:81. [PMID: 30838472 PMCID: PMC6401074 DOI: 10.1186/s11671-019-2898-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
Contrast to the polydisperse nanorods formed by common seed-mediated growth method without the presence of cetyltrimethylammonium bromide (CTAB) in seed solution, we successfully obtained silver nanoparticles with different morphologies in the same reaction system by addition of CTAB in the seed solution. In this work, an appropriate amount of CTAB was added into the solution to prepare silver seed crystals. The results show that the aging time of silver seeds have a great influence on the sizes and morphologies of silver nanoparticles and thus the shape-controllable silver nanoparticles can be easily achieved by simply changing the seed aging time. The results also support that the selective adsorption ability or adsorption behavior of TSC can be adjusted by adding CTAB in the preparation procedure of silver seeds. We suggest that different aging times generate different effects on the competitive adsorption between CTAB and citrate to induce the orientation growth of silver seeds. As a result, silver nanospheres, nanorods, and triangular nanoplates can be easily prepared in the same system. In addition, we overcome the time limitation about the use of the seeds by adding CTAB into seed solution and make the synthesis of silver or other metal nanoparticles with different morphologies more easily and more efficiently.
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Affiliation(s)
- Wenxiu Jin
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515 People’s Republic of China
| | - Guorun Liang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515 People’s Republic of China
| | - Yuanzhi Zhong
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515 People’s Republic of China
| | - Yongcong Yuan
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515 People’s Republic of China
| | - Zhichao Jian
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515 People’s Republic of China
| | - Zhixiong Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515 People’s Republic of China
| | - Wanzhong Zhang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515 People’s Republic of China
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40
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Kalantari A, Abbasi M, Hashim AM. Enhancement of thermal conductivity of size controlled silver nanofluid. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.matpr.2018.12.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Moglianetti M, Solla-Gullón J, Donati P, Pedone D, Debellis D, Sibillano T, Brescia R, Giannini C, Montiel V, Feliu JM, Pompa PP. Citrate-Coated, Size-Tunable Octahedral Platinum Nanocrystals: A Novel Route for Advanced Electrocatalysts. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41608-41617. [PMID: 30404443 DOI: 10.1021/acsami.8b11774] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The development of green and scalable syntheses for the preparation of size- and shape-controlled metal nanocrystals is of high interest in many areas, including catalysis, electrocatalysis, nanomedicine, and electronics. In this work, a new synthetic approach based on the synergistic action of physical parameters and reagents produces size-tunable octahedral Pt nanocrystals, without the use of catalyst-poisoning reagents and/or difficult-to-remove coatings. The synthesis requires sodium citrate, ascorbic acid, and fine control of the reduction rate in aqueous environment. Pt octahedral nanocrystals with particle size as low as 7 nm and highly developed {111} facets have been achieved, as demonstrated by transmission electron microscopy, X-ray diffraction, and electrochemical methods. The absence of sticky molecules together with the high quality of the surface makes these nanocrystals ideal candidates in electrocatalysis. Notably, 7 nm bismuth-decorated octahedral nanocrystals exhibit superior performance for the electrooxidation of formic acid in terms of both specific and mass activities.
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Affiliation(s)
- Mauro Moglianetti
- Nanobiointeractions & Nanodiagnostics, Center for Bio-Molecular Nanotechnologies , Istituto Italiano di Tecnologia , Via Barsanti , 73010 Arnesano , Lecce , Italy
| | - José Solla-Gullón
- Institute of Electrochemistry , University of Alicante , Apdo. 99 , E-03080 Alicante , Spain
| | - Paolo Donati
- Nanobiointeractions & Nanodiagnostics, Center for Bio-Molecular Nanotechnologies , Istituto Italiano di Tecnologia , Via Barsanti , 73010 Arnesano , Lecce , Italy
| | - Deborah Pedone
- Nanobiointeractions & Nanodiagnostics, Center for Bio-Molecular Nanotechnologies , Istituto Italiano di Tecnologia , Via Barsanti , 73010 Arnesano , Lecce , Italy
- Department of Engineering for Innovation , University of Salento , Via per Monteroni , 73100 Lecce , Italy
| | - Doriana Debellis
- Electron Microscopy Facility , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
| | - Teresa Sibillano
- Institute of Crystallography, National Research Council (IC-CNR) , Via Amendola 122/O , 70126 Bari , Italy
| | - Rosaria Brescia
- Electron Microscopy Facility , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
| | - Cinzia Giannini
- Institute of Crystallography, National Research Council (IC-CNR) , Via Amendola 122/O , 70126 Bari , Italy
| | - Vicente Montiel
- Institute of Electrochemistry , University of Alicante , Apdo. 99 , E-03080 Alicante , Spain
| | - Juan M Feliu
- Institute of Electrochemistry , University of Alicante , Apdo. 99 , E-03080 Alicante , Spain
| | - Pier Paolo Pompa
- Nanobiointeractions & Nanodiagnostics, Center for Bio-Molecular Nanotechnologies , Istituto Italiano di Tecnologia , Via Barsanti , 73010 Arnesano , Lecce , Italy
- Nanobiointeractions & Nanodiagnostics , Istituto Italiano di Tecnologia (IIT) , Via Morego, 30 , 16163 Genova , Italy
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42
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Al Abboud MA. Fungal Biosynthesis of Silver Nanoparticles and Their Role in Control of Fusarium Wilt of Sweet Pepper and Soil-borne Fungi in vitro. INT J PHARMACOL 2018. [DOI: 10.3923/ijp.2018.773.780] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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43
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Fiévet F, Ammar-Merah S, Brayner R, Chau F, Giraud M, Mammeri F, Peron J, Piquemal JY, Sicard L, Viau G. The polyol process: a unique method for easy access to metal nanoparticles with tailored sizes, shapes and compositions. Chem Soc Rev 2018; 47:5187-5233. [PMID: 29901663 DOI: 10.1039/c7cs00777a] [Citation(s) in RCA: 200] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
After about three decades of development, the polyol process is now widely recognized and practised as a unique soft chemical method for the preparation of a large variety of nanoparticles which can be used in important technological fields. It offers many advantages: low cost, ease of use and, very importantly, already proven scalability for industrial applications. Among the different classes of inorganic nanoparticles which can be prepared in liquid polyols, metals were the first reported. This review aims to give a comprehensive account of the strategies used to prepare monometallic nanoparticles and multimetallic materials with tailored size and shape. As regards monometallic materials, while the preparation of noble as well as ferromagnetic metals is now clearly established, the scope of the polyol process has been extended to the preparation of more electropositive metals, such as post-transition metals and semi-metals. The potential of this method is also clearly displayed for the preparation of alloys, intermetallics and core-shell nanostructures with a very large diversity of compositions and architectures.
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Affiliation(s)
- F Fiévet
- Université Paris Diderot, Sorbonne Paris Cité, ITODYS, CNRS UMR 7086, 15 rue J.-A. de Baïf, 75205 Paris Cedex 13, France.
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Graf C, Nordmeyer D, Sengstock C, Ahlberg S, Diendorf J, Raabe J, Epple M, Köller M, Lademann J, Vogt A, Rancan F, Rühl E. Shape-Dependent Dissolution and Cellular Uptake of Silver Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:1506-1519. [PMID: 29272915 DOI: 10.1021/acs.langmuir.7b03126] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The cellular uptake and dissolution of trigonal silver nanoprisms (edge length 42 ± 15 nm, thickness 8 ± 1 nm) and mostly spherical silver nanoparticles (diameter 70 ± 25 nm) in human mesenchymal stem cells (hMSC's) and human keratinocytes (HaCaT cells) were investigated. Both particles are stabilized by polyvinylpyrrolidone (PVP), with the prisms additionally stabilized by citrate. The nanoprisms dissolved slightly in pure water but strongly in isotonic saline or at pH 4, corresponding to the lowest limit for the pH during cellular uptake. The tips of the prisms became rounded within minutes due to their high surface energy. Afterward, the dissolution process slowed down due to the presence of both PVP stabilizing Ag{100} sites and citrate blocking Ag{111} sites. On the contrary, nanospheres, solely stabilized by PVP, dissolved within 24 h. These results correlate with the finding that particles in both cell types have lost >90% of their volume within 24 h. hMSC's took up significantly more Ag from nanoprisms than from nanospheres, whereas HaCaT cells showed no preference for one particle shape. This can be rationalized by the large cellular interaction area of the plateletlike nanoprisms and the bending stiffness of the cell membranes. hMSC's have a highly flexible cell membrane, resulting in an increased uptake of plateletlike particles. HaCaT cells have a membrane with a 3 orders of magnitude higher Young's modulus than for hMSC. Hence, the energy gain due to the larger interaction area of the nanoprisms is compensated for by the higher energy needed for cell membrane deformation compared to that for spheres, leading to no shape preference.
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Affiliation(s)
- Christina Graf
- Physikalische und Theoretische Chemie, Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany
| | - Daniel Nordmeyer
- Physikalische und Theoretische Chemie, Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany
| | - Christina Sengstock
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum , 44789 Bochum, Germany
| | - Sebastian Ahlberg
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin , 10117 Berlin, Germany
| | - Jörg Diendorf
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen , 45117 Essen, Germany
| | - Jörg Raabe
- Swiss Light Source, Paul Scherrer Institut , 5232 Villigen, Switzerland
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen , 45117 Essen, Germany
| | - Manfred Köller
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum , 44789 Bochum, Germany
| | - Jürgen Lademann
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin , 10117 Berlin, Germany
| | - Annika Vogt
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin , 10117 Berlin, Germany
| | - Fiorenza Rancan
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin , 10117 Berlin, Germany
| | - Eckart Rühl
- Physikalische und Theoretische Chemie, Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany
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45
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Chen AN, Scanlan MM, Skrabalak SE. Surface Passivation and Supersaturation: Strategies for Regioselective Deposition in Seeded Syntheses. ACS NANO 2017; 11:12624-12631. [PMID: 29164855 DOI: 10.1021/acsnano.7b07041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Crystal growth theory predicts that heterogeneous nucleation will occur preferentially at defect sites, such as the vertices rather than the faces of shape-controlled seeds. Platonic metal solids are generally assumed to have vertices with nearly identical chemical potentials, and also nearly identical faces, leading to the useful generality that heterogeneous nucleation preserves the symmetry of the original seeds in the final product. Herein, we test the limits of this generality in the extreme of low supersaturation, in an effort to expand the methods available for inducing anisotropic overgrowth. We formulate a strategy for favoring localized deposition that differentiates between both different vertices and different edges or faces, i.e., regioselective deposition. Deposition followed a simple kinetic model for nucleation rate, depending on wetting, supersaturation, and temperature. We demonstrate our ability to independently study the effects of varying supersaturation and surface passivation. Regioselective heterogeneous nucleation was achieved at low supersaturation by a kinetic preference for high-energy defect-rich sites over lower-energy sites. This outcome was also achieved by using capping agents to passivate facet sites where deposition was not desired. Collectively, the results presented herein provide a model for breaking the symmetry of seeded growth and for achieving regioselective deposition.
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Affiliation(s)
- Alexander N Chen
- Department of Chemistry, Indiana University , 800 E. Kirkwood Ave., Bloomington, Indiana 47405, United States
| | - Mattea M Scanlan
- Department of Chemistry, Currens Hall 214, Western Illinois University , 1 University Circle, Macomb, Illinois 61455, United States
| | - Sara E Skrabalak
- Department of Chemistry, Indiana University , 800 E. Kirkwood Ave., Bloomington, Indiana 47405, United States
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46
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Khan AU, Zhou Z, Krause J, Liu G. Poly(vinylpyrrolidone)-Free Multistep Synthesis of Silver Nanoplates with Plasmon Resonance in the Near Infrared Range. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13. [PMID: 28902982 DOI: 10.1002/smll.201701715] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/05/2017] [Indexed: 05/17/2023]
Abstract
Herein, a poly(vinylpyrrolidone) (PVP)-free method is described for synthesizing Ag nanoplates that have localized surface plasmon resonance in the near-infrared (NIR) range. Citrate-capped Ag spherical nanoparticles are first grown into small Ag nanoplates that resonate in the range of 500-800 nm. The small Ag nanoplates are used as seeds to further grow into large Ag nanoplates with a lateral dimension of 100-600 nm and a plasmon resonance wavelength of 800-1660 nm and above. The number of growth steps can be increased as desired. Without introducing additional citrate into the solutions of small Ag nanoplate seeds, large Ag nanoplates can be synthesized within minutes. The entire synthesis is completely PVP free, which promotes the nanoparticle growth along the lateral direction to form large Ag nanoplates. The multistep growth and the minimum usage of citrate are essential for the fast growth of high-aspect-ratio Ag nanoplates resonating in the NIR range.
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Affiliation(s)
- Assad U Khan
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Zhengping Zhou
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Joseph Krause
- Division of Nanoscience, Academy of Integrated Science, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Guoliang Liu
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
- Division of Nanoscience, Academy of Integrated Science, Virginia Tech, Blacksburg, VA, 24061, USA
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47
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Qi X, Fichthorn KA. Theory of the thermodynamic influence of solution-phase additives in shape-controlled nanocrystal synthesis. NANOSCALE 2017; 9:15635-15642. [PMID: 28991308 DOI: 10.1039/c7nr05765b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Though many experimental studies have documented that certain solution-phase additives can play a key role in the shape-selective synthesis of metal nanocrystals, the origins and mechanisms of this shape selectivity are still unclear. One possible role of such molecules is to thermodynamically induce the equilibrium shape of a nanocrystal by altering the interfacial free energies of the facets. Using a multi-scheme thermodynamic integration method that we recently developed [J. Chem. Phys., 2016, 145, 194108], we calculate the solid-liquid interfacial free energies γsl and investigate the propensity to achieve equilibrium shapes in such syntheses. We first apply this method to Ag(100) and Ag(111) facets in ethylene glycol solution containing polyvinylpyrrolidone (PVP), to mimic the environment in polyol synthesis of Ag nanocrystals. We find that although PVP has a preferred binding to Ag(100), its selectivity is not sufficient to induce a thermodynamic preference for {100}-faceted nanocubes, as has been observed experimentally. This indicates that PVP promotes Ag nanocube formation kinetically rather than thermodynamically. We further quantify the thermodynamic influence of adsorbed solution-phase additives for generic molecules, by building a γsl ratio/nanocrystal shape map as a function of zero-temperature binding energies. This map can be used to gauge the efficacy of candidate additive molecules for producing targeted thermodynamic nanocrystal shapes. The results indicate that only additives with a strong facet selectivity can impart significant thermodynamic-shape change. Therefore, many of the nanocrystals observed in experiments are likely kinetic products.
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Affiliation(s)
- Xin Qi
- Dept. of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
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48
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In Situ Synthesis of Silver Nanoparticles on the Polyelectrolyte-Coated Sericin/PVA Film for Enhanced Antibacterial Application. MATERIALS 2017; 10:ma10080967. [PMID: 28820482 PMCID: PMC5578333 DOI: 10.3390/ma10080967] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 07/26/2017] [Accepted: 08/17/2017] [Indexed: 12/03/2022]
Abstract
To develop silk sericin (SS) as a potential antibacterial biomaterial, a novel composite of polyelectrolyte multilayers (PEMs) coated sericin/poly(vinyl alcohol) (SS/PVA) film modified with silver nanoparticles (AgNPs) has been developed using a layer-by-layer assembly technique and ultraviolet-assisted AgNPs synthesis method. Ag ions were enriched by PEMs via the electrostatic attraction between Ag ions and PEMs, and then reduced to AgNPs in situ with the assistance of ultraviolet irradiation. PEMs facilitated the high-density growth of AgNPs and protected the synthesized AgNPs due to the formation of a 3D matrix, and thus endowed SS/PVA film with highly effective and durable antibacterial activity. Scanning electron microscopy, energy dispersive spectroscopy, X-ray diffractometry, Fourier transfer infrared spectroscopy, water contact angle, mechanical property and thermogravimetric analysis were applied to characterize SS/PVA, PEMs-SS/PVA and AgNPs-PEMs-SS/PVA films, respectively. AgNPs-PEMs-SS/PVA film has exhibited good mechanical performance, hydrophilicity, water absorption capability as well as excellent and durable antibacterial activity against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa and good stability and degradability. This study has developed a simple method to design and prepare AgNPs-PEMs-SS/PVA film for potential antibacterial application.
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49
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Verma S, Rao B, Srivastava A, Srivastava D, Kaul R, Singh B. A facile synthesis of broad plasmon wavelength tunable silver nanoparticles in citrate aqueous solutions by laser ablation and light irradiation. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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50
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Weng G, Huang Y, Thanneeru S, Li H, Alamri A, He J. Cross-linking of COOH-containing polymers using Ag(i)-catalyzed oxidative decarboxylation in aqueous solution. SOFT MATTER 2017; 13:5028-5037. [PMID: 28657101 DOI: 10.1039/c7sm00825b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cross-linking that defines the three-dimensional networks in hydrogels has a significant impact on their physiochemical properties. The cross-linking of hydrophilic polymers via post-polymerization reactions is an ideal way to manufacture hydrogels with high reproducibility and without monomer residuals. We herein report the use of Ag(i)-catalyzed oxidative decarboxylation to cross-link poly(acrylic acid) (PAA) and a family of COOH-containing hydrophilic polymers. Our method is based on the radical-mediated elimination reaction to remove COOH group(s) and generate alkyl radical(s) simultaneously, in the presence of AgNO3 and persulfates. The further intermolecular radical coupling is demonstrated to be very effective in inducing cross-linking and gelation of COOH-containing hydrophilic polymers. The cross-linking reaction can be readily achieved by simply mixing a small amount of AgNO3 (as low as 0.03 wt%) and persulfates with polymers at room temperature in air. Rheological measurements show that the gelation occurs in 20-30 min. The applications of oxidative decarboxylation in the preparation of hydrogels of COOH-containing hydrophilic copolymers and their interpenetrating polymer network (IPN) hydrogels are further validated. Finally, the residual Ag(i) ions in hydrogels are discussed in terms of how Ag(i) ions further change the mechanical and optical properties of hydrogels by photoreduction of Ag(i) to Ag nanoparticles. We expect that this Ag(i)-catalyzed oxidative decarboxylation chemistry can not only serve as a facile and general strategy to produce hydrogels through post-polymerization, but also enrich the toolbox of cross-linking chemistries of COOH-containing polymers in all forms (e.g. films, colloids and dispersions).
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Affiliation(s)
- Gengsheng Weng
- School of Materials and Chemical Engineering, Ningbo Key Laboratory of Specialty Polymers, Ningbo University, Ningbo, 315211, China and Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
| | - Yu Huang
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA. and College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China
| | - Srinivas Thanneeru
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
| | - Hongqiang Li
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA. and College of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Abdullah Alamri
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
| | - Jie He
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA. and Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
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