1
|
Pedrazo-Tardajos A, Claes N, Wang D, Sánchez-Iglesias A, Nandi P, Jenkinson K, De Meyer R, Liz-Marzán LM, Bals S. Direct visualization of ligands on gold nanoparticles in a liquid environment. Nat Chem 2024; 16:1278-1285. [PMID: 38937593 DOI: 10.1038/s41557-024-01574-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 06/06/2024] [Indexed: 06/29/2024]
Abstract
The interactions between gold nanoparticles, their surface ligands and the solvent critically influence the properties of these nanoparticles. Although spectroscopic and scattering techniques have been used to investigate their ensemble structure, a comprehensive understanding of these processes at the nanoscale remains challenging. Electron microscopy makes it possible to characterize the local structure and composition but is limited by insufficient contrast, electron beam sensitivity and the requirement for ultrahigh-vacuum conditions, which prevent the investigation of dynamic aspects. Here we show that, by exploiting high-quality graphene liquid cells, we can overcome these limitations and investigate the structure of the ligand shell around gold nanoparticles and at the ligand-gold interface in a liquid environment. Using this graphene liquid cell, we visualize the anisotropy, composition and dynamics of ligand distribution on gold nanorod surfaces. Our results indicate a micellar model for surfactant organization. This work provides a reliable and direct visualization of ligand distribution around colloidal nanoparticles.
Collapse
Affiliation(s)
- Adrián Pedrazo-Tardajos
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Nathalie Claes
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Da Wang
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Ana Sánchez-Iglesias
- CIC biomaGUNE, Donostia-San Sebastián, Spain
- Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Donostia-San Sebastián, Spain
| | - Proloy Nandi
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Kellie Jenkinson
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Robin De Meyer
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Donostia-San Sebastián, Spain
- Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
- Cinbio, Universidade de Vigo, Vigo, Spain
| | - Sara Bals
- EMAT-University of Antwerp, Antwerp, Belgium.
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium.
| |
Collapse
|
2
|
Xue Y, Ma X, Feng X, Roberts S, Zhu G, Huang Y, Fan X, Fan J, Chen X. Temperature-Derived Purification of Gold Nano-Bipyramids for Colorimetric Detection of Tannic Acid. ACS APPLIED NANO MATERIALS 2023; 6:11572-11580. [PMID: 37469507 PMCID: PMC10353004 DOI: 10.1021/acsanm.3c01593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/13/2023] [Indexed: 07/21/2023]
Abstract
Gold nanostructures have attracted broad attention. Among various nanostructures, gold nanobipyramids have shown great potential in sensing, biomedicine, environmental protection, chemical catalysis, and optics due to their unique physical and optical properties and ease of chemical functionalization. Compared with other plasmonic nanostructures, gold nanobipyramids possess narrow optical resonances, stronger plasmonic local field enhancement, and size- and shape-dependent surface plasmon resonance. However, the synthesis and purification of homogeneous gold nanobipyramids are very challenging. The gold nanobipyramids synthesized via the commonly used seed-mediated growth method have low yields and are often coproduced with spherical nanoparticles. In this study, we reported a temperature-derived purification method for the isolation of gold bipyramids. In the presence of salt, by altering the temperature of the solution, large gold bipyramids can be separated from small spherical nanoparticles. As a result, a yield of as high as 97% gold nanobipyramids can be achieved through a single round of purification, and correspondingly, the ratio between the longitudinal surface plasmon resonance (LSPR) and transverse SPR intensity significantly increases to as high as 6.7. The purified gold nanobipyramids can be used as a colorimetric probe in the detection of tannic acid with a detection limit of 0.86 μM and a linear detection range from 1.25 to 37.5 μM.
Collapse
Affiliation(s)
- Yuxiang Xue
- School
of Engineering, Institute for Bioengineering, University of Edinburgh, The King’s Buildings, EH9 3JL Edinburgh, U.K.
| | - Xinyao Ma
- Department
of Materials Science and Engineering, City
University of Hong Kong, 83 Tat Chee Ave, 00000 Kowloon Tong, Hong Kong, SAR, P. R. China
| | - Xue Feng
- School
of Engineering, Institute for Bioengineering, University of Edinburgh, The King’s Buildings, EH9 3JL Edinburgh, U.K.
| | - Sam Roberts
- School
of Engineering, Institute for Bioengineering, University of Edinburgh, The King’s Buildings, EH9 3JL Edinburgh, U.K.
| | - Guangyu Zhu
- Department
of Chemistry, City University of Hong Kong, 83 Tat Chee Ave, 00000 Kowloon Tong, Hong
Kong, SAR, P. R. China
| | - Yi Huang
- School
of Engineering, Institute for Materials Processing, University of Edinburgh, The King’s Buildings, EH9 3JL Edinburgh, U.K.
| | - Xianfeng Fan
- School
of Engineering, Institute for Materials Processing, University of Edinburgh, The King’s Buildings, EH9 3JL Edinburgh, U.K.
| | - Jun Fan
- Department
of Materials Science and Engineering, City
University of Hong Kong, 83 Tat Chee Ave, 00000 Kowloon Tong, Hong Kong, SAR, P. R. China
| | - Xianfeng Chen
- School
of Engineering, Institute for Bioengineering, University of Edinburgh, The King’s Buildings, EH9 3JL Edinburgh, U.K.
| |
Collapse
|
3
|
Improving the colloidal stability of PEGylated BaTiO3 nanoparticles with surfactants. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2022.111701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
4
|
Reale M, Chandra S, Buscarino G, Emanuele A, Cannas M, Ikkala O, Sciortino A, Messina F. Photoinduced charge separation in functional carbon-silver nanohybrids. Phys Chem Chem Phys 2022; 24:12974-12983. [PMID: 35582872 DOI: 10.1039/d2cp00668e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent times, nanoscience is devoting growing interest to the easy assembly of well-established nanomaterials into hybrid nanostructures displaying new emerging features. Here, we study the photophysicochemical response of binary nanohybrids obtained by the spontaneous coupling of luminescent carbon dots to silver nanoparticles with controlled surface charge. Evidence of the successful coupling is obtained by steady-state and time resolved optical measurements and further confirmed by direct imaging. We demonstrate strong interactions within nanohybrids, which can be modelled in terms of a sub-picosecond electron transfer from photoexcited carbon dots to silver nanoparticles. Accordingly, newly designed nanohybrids display significant photocatalytic performance demonstrated by the photodegradation of methylene blue under ultraviolet-visible light. Our results provide an exhaustive picture of the optical response of these self-assembled carbon-silver nanohybrids and show their promise as a new class of eco-friendly materials for light-driven catalytic applications.
Collapse
Affiliation(s)
- M Reale
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy.
| | - S Chandra
- Department of Applied Physics, Aalto University, P. O. Box 15100, Espoo, FI-00076, Finland
| | - G Buscarino
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy. .,ATeN Center - Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy
| | - A Emanuele
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy.
| | - M Cannas
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy.
| | - O Ikkala
- Department of Applied Physics, Aalto University, P. O. Box 15100, Espoo, FI-00076, Finland
| | - A Sciortino
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy. .,ATeN Center - Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy
| | - F Messina
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy. .,ATeN Center - Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy
| |
Collapse
|
5
|
Yang J, Duan H, Wang X, Zhang H, Zhang Z. Effects of rice root exudates on aggregation, dissolution and bioaccumulation of differently-charged Ag nanoparticles. RSC Adv 2022; 12:9435-9444. [PMID: 35424848 PMCID: PMC8985187 DOI: 10.1039/d2ra00229a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/19/2022] [Indexed: 12/01/2022] Open
Abstract
The biological toxicity and eco-environmental risk of metal nanoparticles (MNPs) is closely related to their stability. The stability of MNPs not only depends on their own properties but also on the effects of biological and environmental factors. To better understand the interaction between biological factors and MNPs in aquatic environments, the effects of total rice root exudates (T-RRE) on the aggregation, dissolution and bioaccumulation of Ag nanoparticles (AgNPs) with different surface charges were investigated in detail. Results indicated that T-RRE can induce the aggregation and sedimentation, and hinder the dissolution of polyethyleneimine-coated AgNPs (AgNPs@PEI) with positive surface charges as well as reducing the bioaccumulation of Ag in rice roots. T-RRE had no obvious effect on the dispersion stability of AgNPs@Cit (negatively charged citrate-coated AgNPs) and AgNPs@PVP (near electrically neutral polyvinylpyrrolidone-coated AgNPs), although T-RRE could induce the dissolution of AgNPs@Cit and AgNPs@PVP. In the molecular fractions of T-RRE, high-molecular-weight root exudates (H-RRE) play a key role in inducing the aggregation of AgNPs@PEI and hindering the bioaccumulation of Ag in rice roots. Compared with H-RRE, low-molecular-weight root exudates (L-RRE) can promote the dissolution of AgNPs@Cit and AgNPs@PVP, but it can obviously promote silver accumulation in rice roots. The difference in charge intensity between L-RRE and T-RRE plays a key role in inducing the aggregation and dissolution of AgNPs with different charges. These findings provide a foundation for investigation of the interactions between rice root exudates and nanoparticles with different surface charges in complex environmental systems. The biological toxicity and eco-environmental risk of metal nanoparticles (MNPs) is closely related to their stability.![]()
Collapse
Affiliation(s)
- Jiajia Yang
- School of Life Science, Shanxi Normal University Taiyuan 030000 China +86-0351-2051196
| | - Hongyu Duan
- School of Life Science, Shanxi Normal University Taiyuan 030000 China +86-0351-2051196
| | - Xiya Wang
- School of Life Science, East China Normal University Shanghai 200241 China
| | - Huan Zhang
- School of Life Science, Shanxi Normal University Taiyuan 030000 China +86-0351-2051196
| | - Zhifeng Zhang
- School of Life Science, Shanxi Normal University Taiyuan 030000 China +86-0351-2051196
| |
Collapse
|
6
|
Kato H, Nakamura A, Shimizu M. Effect of surfactant micelle size on the dispersibility of aqueous carbon black particle suspensions prepared by ultrasonication. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
7
|
Harada M, Yamamoto M, Iwase H. Combined Small-Angle Neutron Scattering/Small-Angle X-ray Scattering Analysis for the Characterization of Silver Nanoparticles Prepared via Photoreduction in Water-in-Oil Microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13085-13098. [PMID: 34714093 DOI: 10.1021/acs.langmuir.1c02235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, we used small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) to investigate the formation process of silver (Ag) nanoparticles (NPs) in water-in-oil (w/o) reverse microemulsions comprising sodium bis(2-ethylhexyl) sulfosuccinate (AOT), water, and organic solvents (such as benzene, octane, and decane) by the photoreduction of silver perchlorate (AgClO4). Combining SANS and SAXS, the structural changes in the w/o microemulsions before and after the formation of Ag NPs via photoreduction were quantitatively evaluated. From the SANS experiments performed using the contrast-variation method, the size of water cores containing Ag NPs and the thickness of the AOT shells were calculated using the core-shell hard-sphere model. The size of the Ag NPs and their aggregates was calculated via SAXS analysis based on the polydisperse sphere model with a Schulz-Zimm distribution. We found that aggregates of three or four primary Ag NPs are formed by, first, the aggregation of water droplets through the entanglement of the tails of the AOT shell, followed by the self-assembly of Ag NPs into their aggregates because of particle-particle attractive interactions.
Collapse
Affiliation(s)
- Masafumi Harada
- Department of Computer Science and Clothing Environment, Faculty of Human Life and Environment, Nara Women's University, Nara 630-8506, Japan
| | - Miho Yamamoto
- Department of Computer Science and Clothing Environment, Faculty of Human Life and Environment, Nara Women's University, Nara 630-8506, Japan
| | - Hiroki Iwase
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| |
Collapse
|
8
|
Solar radiation-induced synthesis of bacterial cellulose/silver nanoparticles (BC/AgNPs) composite using BC as reducing and capping agent. Bioprocess Biosyst Eng 2021; 45:257-268. [PMID: 34665338 DOI: 10.1007/s00449-021-02655-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 10/07/2021] [Indexed: 01/12/2023]
Abstract
In the present work, a simple, novel, and ecofriendly method for synthesis of silver nanoparticles (AgNPs) and BC/AgNP composite using bacterial cellulose (BC) nanofibers soaked in AgNO3 solution under induction action of solar radiation. The photochemical reduction of silver Ag + ions into silver nanoparticles (Ago) was confirmed using UV visible spectra; the surface plasmon resonance of synthesized AgNPs was localized around 425 nm. The mean diameter of AgNPs obtained by DLS analysis was 52.0 nm with a zeta potential value of - 9.98 mV. TEM images showed a spherical shape of AgNPs. The formation of BC/AgNP composite was confirmed by FESEM, EDX, FTIR, and XRD analysis. FESEM images for BC showed the 3D structures of BC nanofibers and the deposited AgNPs in the BC crystalline nanofibers. XRD measurements revealed the high crystallinity of BC and BC/AgNP composite with crystal sizes of 5.13 and 5.6 nm, respectively. BC/AgNP composite and AgNPs exhibited strong antibacterial activity against both Gram-positive and Gram-negative bacteria. The present work introduces a facile green approach for BC/AgNP composite synthesis and its utility as potential food packaging and wound dressings, as well as sunlight indicator application.
Collapse
|
9
|
Mathioudakis GN, Soto Beobide A, Anastasiadis SH, Voyiatzis GA. Surface enhanced Raman scattering of brilliant green: Packing density and stabilizing effect of the cationic surfactant CTAB on the “hotspot” spacing. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Muneer R, Hashmet MR, Pourafshary P. Fine Migration Control in Sandstones: Surface Force Analysis and Application of DLVO Theory. ACS OMEGA 2020; 5:31624-31639. [PMID: 33344814 PMCID: PMC7745222 DOI: 10.1021/acsomega.0c03943] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 11/19/2020] [Indexed: 05/04/2023]
Abstract
Formation damage caused by fine migration and straining is a well-documented phenomenon in sandstone reservoirs. Fine migration and the associated permeability decline have been observed in various experimental studies, and this phenomenon has been broadly explained by the analysis of surface forces between fines and sand grains. The Derjaguin-Landau-Verwey-Overbeek (DLVO) theory is a useful tool to help understand and model the fine release, migration, and control phenomena within porous media by quantifying the total interaction energy of the fine-brine-rock (FBR) system. Fine migration is mainly caused by changes in the attractive and repulsive surface forces, which are triggered by mud invasion during drilling activity, the utilization of completion fluid, acidizing treatment, and water injection into the reservoir during secondary and tertiary recovery operations. Increasing pH and decreasing water salinity collectively affect the attractive and repulsive forces and, at a specific value of pH, and critical salt concentration (CSC), the total interaction energy of the FBR system (V T) shifts from negative to positive, indicating the initiation of fine release. Maintaining the system pH, setting the salinity above the CSC, tuning the ionic composition of injected water, and using nanoparticles (NPs) are practical options to control fine migration. DLVO modeling elucidates the total interaction energy between fines and sand grains based on the calculation of surface forces of the system. In this context, zeta potential is an important indicator of an increase or decrease in repulsive forces. Using available data, two correlations have been developed to calculate the zeta potential for sandstone reservoirs in high- and low-salinity environments and validated with experimental values. Based on surface force analysis, the CSC is predicted by the DLVO model; it is in close agreement with the experimental value from the literature. The critical pH value is also estimated for alkaline flooding. Model results confirm that the application of NPs and the presence of divalent ions increase the attractive force and help to mitigate the fine migration problem. Hence, a new insight into the analysis of quantified surface forces is presented in current research work by the practical application of the DLVO theory to model fine migration initiation under the influence of injection water chemistry.
Collapse
|
11
|
Li R, Wang Z, Gu X, Chen C, Zhang Y, Hu D. Study on the Assembly Structure Variation of Cetyltrimethylammonium Bromide on the Surface of Gold Nanoparticles. ACS OMEGA 2020; 5:4943-4952. [PMID: 32201780 PMCID: PMC7081447 DOI: 10.1021/acsomega.9b03823] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Abstract
In this work, the self-assembly behavior of cetyltrimethylammonium bromide (CTAB) on the surface of citrate-capped gold nanoparticles (AuNPs) in solution has been studied by UV-vis absorption spectroscopy, fluorescence probe techniques, ζ potentiometric methods, transmission electron microscopy, etc. The UV-vis spectra show that the color with the increase of CTAB for the mixture containing CTAB and a given amount of AuNPs changes from red to blue and then to red. The absolute value of ζ potential corresponding to this color change decreases initially and then increases. Specially, the reversible color change, from red to blue and then to red, could be observed only in the case of a gradual addition of a AuNP solution to a CTAB solution; however, this reversible change is not suitable for the mixture formed in a reverse order of mixing. The results from pyrene used as the fluorescence probe indicate that the features in the fluorescence spectrum (including fluorescence quenching, I 1/I 3, and the excimer) well correspond to those from the UV-vis spectrum mentioned above. Based on the experimental results, the mechanism of the assembly structure variation of CTAB on the surface of negatively charged AuNPs was proposed. For a given amount of AuNPs, the assembly structure of CTAB on the surface of AuNPs undergoes the transformation from a monolayer to a bilayer with the increase of CTAB. In the case of the concentration of CTAB far beyond its critical micelle concentration (CMC) and the higher ratio of CTAB and AuNPs, there is a possibility of the formation of an extra micellar structure only after the formation of a double-layer structure.
Collapse
Affiliation(s)
- Runmei Li
- Engineering
Research Center of Historical and Cultural Heritage Protection, Ministry
of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Zhuorui Wang
- Engineering
Research Center of Historical and Cultural Heritage Protection, Ministry
of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Xuefan Gu
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
| | - Cong Chen
- Engineering
Research Center of Historical and Cultural Heritage Protection, Ministry
of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Yaya Zhang
- Engineering
Research Center of Historical and Cultural Heritage Protection, Ministry
of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Daodao Hu
- Engineering
Research Center of Historical and Cultural Heritage Protection, Ministry
of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, China
| |
Collapse
|
12
|
Shu M, He F, Li Z, Zhu X, Ma Y, Zhou Z, Yang Z, Gao F, Zeng M. Biosynthesis and Antibacterial Activity of Silver Nanoparticles Using Yeast Extract as Reducing and Capping Agents. NANOSCALE RESEARCH LETTERS 2020; 15:14. [PMID: 31950291 PMCID: PMC6965552 DOI: 10.1186/s11671-019-3244-z] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 12/27/2019] [Indexed: 05/05/2023]
Abstract
Biosynthesis for the preparation of antimicrobial silver nanoparticles (Ag NPs) is a green method without the use of cytotoxic reducing and surfactant agents. Herein, shape-controlled and well-dispersed Ag NPs were biosynthesized using yeast extract as reducing and capping agents. The synthesized Ag NPs exhibited a uniform spherical shape and fine size, with an average size of 13.8 nm. The biomolecules of reductive amino acids, alpha-linolenic acid, and carbohydrates in yeast extract have a significant role in the formation of Ag NPs, which was proved by the Fourier transform infrared spectroscopy analysis. In addition, amino acids on the surface of Ag NPs carry net negative charges which maximize the electrostatic repulsion interactions in alkaline solution, providing favorable stability for more than a year without precipitation. The Ag NPs in combination treatment with ampicillin reversed the resistance in ampicillin-resistant E. coli cells. These monodispersed Ag NPs could be a promising alternative for the disinfection of multidrug-resistant bacterial strains, and they showed negligible cytotoxicity and good biocompatibility toward Cos-7 cells.
Collapse
Affiliation(s)
| | | | - Zhaohui Li
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Xingzhong Zhu
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Yujie Ma
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Zhihua Zhou
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Zhi Yang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Feng Gao
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Min Zeng
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| |
Collapse
|
13
|
Fernando I, Qian T, Zhou Y. Long term impact of surfactants & polymers on the colloidal stability, aggregation and dissolution of silver nanoparticles. ENVIRONMENTAL RESEARCH 2019; 179:108781. [PMID: 31586861 DOI: 10.1016/j.envres.2019.108781] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/30/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
Cetyl trimethyl ammonium bromide (CTAB), Tween 20, polyvinyl pyrrolidone (PVP) and polyethylene glycol (PEG) are among the commonly used surfactants and polymers to stabilize silver nanoparticles (AgNPs). However, their interactions with AgNPs are different. The impact of these surfactants and polymers on the colloidal stability of freshly synthesized uncoated AgNPs was evaluated through a series of long-term experiments and analyzed in terms of their physical and chemical behavior. The cationic surfactant, CTAB was able to produce a mono modal particle size distribution in a prolonged period without affecting the dissolution. In the presence of Tween 20, a non-ionic surfactant, dissolution was promoted in the long run and the particles were preserved with minimal aggregation. In the presence of the polymers, PVP and PEG, the particle structure was not affected even though dissolution was observed. This study presents important insights on the interactions of AgNPs with surfactants and polymers, which could significantly affect the transformations and fate of AgNPs in the aquatic environment.
Collapse
Affiliation(s)
- Ishara Fernando
- Interdisciplinary Graduate School, Nanyang Technological University, 639798, Singapore; Nanyang Environment & Water Research Institute, Advanced Environmental Biotechnology Centre, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141 Singapore
| | - Tingting Qian
- Nanyang Environment & Water Research Institute, Advanced Environmental Biotechnology Centre, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141 Singapore; School of Civil & Environmental Engineering, College of Engineering, Nanyang Technological University, 639798, Singapore
| | - Yan Zhou
- Nanyang Environment & Water Research Institute, Advanced Environmental Biotechnology Centre, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141 Singapore; School of Civil & Environmental Engineering, College of Engineering, Nanyang Technological University, 639798, Singapore.
| |
Collapse
|
14
|
Radha P, Suhazsini P, Prabhu K, Jayakumar A, Kandasamy R. Chicken Tallow, a Renewable Source for the Production of Biosurfactant byYarrowia lipolyticaMTCC9520, and its Application in Silver Nanoparticle Synthesis. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12357] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Panjanathan Radha
- Biomolecules and Biocatalysis Laboratory, Department of BiotechnologySRM Institute of Science and Technology Kattankulathur, Kancheepuram District Tamil Nadu 603203 India
| | - Priya Suhazsini
- Biomolecules and Biocatalysis Laboratory, Department of BiotechnologySRM Institute of Science and Technology Kattankulathur, Kancheepuram District Tamil Nadu 603203 India
| | - Keerthana Prabhu
- Biomolecules and Biocatalysis Laboratory, Department of BiotechnologySRM Institute of Science and Technology Kattankulathur, Kancheepuram District Tamil Nadu 603203 India
| | - Anjali Jayakumar
- Biomolecules and Biocatalysis Laboratory, Department of BiotechnologySRM Institute of Science and Technology Kattankulathur, Kancheepuram District Tamil Nadu 603203 India
| | - Ramani Kandasamy
- Biomolecules and Biocatalysis Laboratory, Department of BiotechnologySRM Institute of Science and Technology Kattankulathur, Kancheepuram District Tamil Nadu 603203 India
| |
Collapse
|
15
|
Affiliation(s)
- Marwan Y. Rezk
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
| | - Nageh K. Allam
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
| |
Collapse
|
16
|
Biosynthesis of Silver Nanoparticles Mediated by Extracellular Pigment from Talaromyces purpurogenus and Their Biomedical Applications. NANOMATERIALS 2019; 9:nano9071042. [PMID: 31330905 PMCID: PMC6669664 DOI: 10.3390/nano9071042] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 12/17/2022]
Abstract
In recent years, green syntheses have been researched comprehensively to develop inexpensive and eco-friendly approaches for the generation of nanoparticles. In this context, plant and microbial sources are being examined to discover potential reducing agents. This study aims to utilize an extracellular pigment produced by Talaromyces purpurogenus as a prospective reducing agent to synthesize silver nanoparticles (AgNPs). Biosynthesized AgNPs were characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), electron probe micro analyser (EPMA), and zeta potential. The pigment functional groups involved in the generation of AgNPs were investigated using Fourier transform infrared spectroscopy. TEM images showed that the generated nanoparticles were spherical, hexagonal, rod-shaped, and triangular-shaped with a particle size distribution from 4 to 41 nm and exhibited a surface plasmon resonance at around 410 nm. DLS and zeta potential studies revealed that the particles were polydispersed and stable (−24.8 mV). EPMA confirmed the presence of elemental silver in the samples. Biosynthesized AgNPs exhibited minimum inhibitory concentrations of 32 and 4 μg/mL against E. coli and S. epidermidis, respectively. Further, cytotoxicity of the AgNPs was investigated against human cervical cancer (HeLa), human liver cancer (HepG2), and human embryonic kidney (HEK-293) cell lines using 5-fluorouracil as a positive control. A significant activity was recorded against HepG2 cell line with a half-maximal inhibitory concentration of 11.1 μg/mL.
Collapse
|
17
|
Aiad I, Shaban SM, Tawfik SM, Khalil MM, El-Wakeel N. Effect of some prepared surfactants on silver nanoparticles formation and surface solution behavior and their biological activity. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.06.089] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|