Ultrasonic synthesized Konjac gum/PEG-silver nanoparticles for colorimetric detection of hydrogen peroxide

Abstract Green and low-cost synthesis strategy for ultrasonic preparation of polymer blend matrix based silver nanoparticles (Ag NPs) and the development of rapid and high sensitive detection route have a great attention in biomedical applications. Therefore, in this study, we investigated the hydrogen peroxide detection performance of Konjac gum (KG)/PEG-Ag NPs. The KG/PEG-Ag NPs was synthesized via an ultrasonic process and characterized by different techniques such as ultraviolet–visible spectroscopy (UV–Vis), Fourier-Transform Infrared spectroscopy (FT-IR), Scanning Electron Microscope (SEM) and Energy Dispersive X-ray spectroscopy (EDX). Furthermore, we determined the experimental optimization on the effect of the rheological parameters of nanostructure with the highest correlation constant (R 2 : 0.989-0.996), and the intrinsic viscosity (14.71-26.77 dl/g). To provide the miscible polymer blends and homogeneous dispersion of the nanostructure, we compared the rheological parameters with the experimental results. The response time was less than 5 s and the lower limit of detection was 0.071 μM. This novel highly sensitive, rapid, and naked-eye colorimetric biosensor based Ag NPs which are prepared ultrasonic manufacturing approach, opens up a green approach of development facile and rapid detection of hydrogen peroxide in practical biomedical applications.

Download Full-text

Reactivity and Chemical Sintering of Carey Lea Silver Nanoparticles

Nanomaterials ◽

10.3390/nano9111525 ◽

2019 ◽

Vol 9 (11) ◽

pp. 1525

Author(s):

Sergey Vorobyev ◽

Elena Vishnyakova ◽

Maxim Likhatski ◽

Alexander Romanchenko ◽

Ivan Nemtsev ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Silver Nanoparticles ◽

Flexible Electronics ◽

Photoelectron Spectroscopy ◽

Colloidal Solutions ◽

Ag Nps ◽

Wide Range ◽

Carboxylic Groups ◽

The Media ◽

Sulfide Ions

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.

Download Full-text

Preparation of Silver Nanoparticles and Their Industrial and Biomedical Applications: A Comprehensive Review

Advances in Materials Science and Engineering ◽

10.1155/2015/165257 ◽

2015 ◽

Vol 2015 ◽

pp. 1-16 ◽

Cited By ~ 86

Author(s):

Adnan Haider ◽

Inn-Kyu Kang

Keyword(s):

Silver Nanoparticles ◽

Biomedical Applications ◽

Consumer Products ◽

Ag Nps ◽

New Techniques ◽

Governing Factor ◽

Wide Range ◽

Microbial Proliferation ◽

Synthetic Routes ◽

Biomedical Fields

Silver nanoparticles (Ag-NPs) have diverted the attention of the scientific community and industrialist itself due to their wide range of applications in industry for the preparation of consumer products and highly accepted application in biomedical fields (especially their efficacy against microbes, anti-inflammatory effects, and wound healing ability). The governing factor for their potent efficacy against microbes is considered to be the various mechanisms enabling it to prevent microbial proliferation and their infections. Furthermore a number of new techniques have been developed to synthesize Ag-NPs with controlled size and geometry. In this review, various synthetic routes adapted for the preparation of the Ag-NPs, the mechanisms involved in its antimicrobial activity, its importance/application in commercial as well as biomedical fields, and possible application in future have been discussed in detail.

Download Full-text

Humic Acid Functionalized - Silver Nanoparticles as Nanosensor for Colorimetric Detection of Copper (II) Ions in Aqueous Solutions

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.831.142 ◽

2020 ◽

Vol 831 ◽

pp. 142-150

Author(s):

Edgar Clyde R. Lopez ◽

Michael Angelo Zafra ◽

Jon Nyner L. Gavan ◽

Emil David A. Villena ◽

Francis Eric P. Almaquer ◽

...

Keyword(s):

Silver Nanoparticles ◽

Humic Acid ◽

Aqueous Solutions ◽

Limit Of Detection ◽

Colorimetric Detection ◽

Hydrodynamic Diameter ◽

Limit Of Quantification ◽

Local Surface Plasmon Resonance ◽

Optical Absorbance ◽

Absorbance Spectra

Humic acid - functionalized silver nanoparticles (HA-AgNPs) were successfully synthesized and used to detect Cu (II) ions in aqueous solutions. The HA-AgNPs was shown to have an average hydrodynamic diameter of 101.4 nm and a polydispersity index of 0.447. The absorbance spectra of HA-AgNPs showed the characteristic local surface plasmon resonance (LSPR) peak of AgNPs at 408.3 nm. Addition of Cu (II) in the HA-AgNPs led to their agglomeration as evidenced by the change in their surface morphology and their corresponding optical absorbance spectra. The synthesized HA-AgNPs showed a strong linear response for Cu (II) concentrations in the range of 0.00 – 1.25 mM with a limit of detection (LoD) of 4.4428 ± 0.1091 mg L-1, a limit of quantification (LoQ) of 14.8094 ± 0.3636 mg L-1, and a limit of blank (LoB) of 0.1214 ± 0.0065 mg L-1. Statistical analysis showed that this calibration curve could be used to quantify Cu (II) concentrations within a 95% confidence level. Furthermore, HA-AgNPs was found to be selective for Cu (II) detection based on the selectivity study against common metal ions found in drinking water. This shows that the synthesized HA-AgNPs can be used as an environment-friendly colorimetric nanosensor for rapid and point-of-need quantification of Cu (II) ions in aqueous media.

Download Full-text

Using Fomitopsis pinicola for bioinspired synthesis of titanium dioxide and silver nanoparticles, targeting biomedical applications

RSC Advances ◽

10.1039/d0ra02637a ◽

2020 ◽

Vol 10 (53) ◽

pp. 32137-32147 ◽

Cited By ~ 2

Author(s):

Suriya Rehman ◽

Rabindran Jermy ◽

Sarah Mousa Asiri ◽

Manzoor A. Shah ◽

Romana Farooq ◽

...

Keyword(s):

Silver Nanoparticles ◽

Titanium Dioxide ◽

Ribosomal Rna ◽

Biomedical Applications ◽

Gene Sequencing ◽

Wild Mushroom ◽

Ag Nps ◽

Fomitopsis Pinicola ◽

Bioinspired Synthesis ◽

18S Ribosomal Rna Gene

This study proposes a bio-directed approach for the formation of titanium oxide and silver nanoparticles (TiO2 and Ag NPs), using a wild mushroom, Fomitopsis pinicola, identified by 18S ribosomal RNA gene sequencing (gene accession no. MK635350) and phenotypic examination.

Download Full-text

Evaluation of Some Biosynthesized Silver Nanoparticles for Biomedical Applications: Hydrogen Peroxide Scavenging, Anticoagulant and Thrombolytic Activities

Journal of Cluster Science ◽

10.1007/s10876-016-1146-0 ◽

2016 ◽

Vol 28 (3) ◽

pp. 1379-1392 ◽

Cited By ~ 29

Author(s):

Agbaje Lateef ◽

Sunday A. Ojo ◽

Joseph A. Elegbede ◽

Musibau A. Azeez ◽

Taofeek A. Yekeen ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Silver Nanoparticles ◽

Biomedical Applications

Download Full-text

Silver nanoparticles: synthesis through chemical methods in solution and biomedical applications

Open Chemistry ◽

10.2478/s11532-010-0124-x ◽

2011 ◽

Vol 9 (1) ◽

pp. 7-19 ◽

Cited By ~ 60

Author(s):

Jorge García-Barrasa ◽

José López-de-Luzuriaga ◽

Miguel Monge

Keyword(s):

Wound Healing ◽

Silver Nanoparticles ◽

Metal Nanoparticles ◽

Biomedical Applications ◽

Antiviral Agent ◽

Ag Nps ◽

Chemical Methods ◽

Precise Control ◽

Nanoparticles Synthesis ◽

Inorganic Nanomaterials

AbstractChemical methods provide an easy way to synthesize silver nanoparticles (Ag NPs) in solution. These metal nanoparticles have a great potential for biomedical applications as an antibacterial, antifungal, and antiviral agent or in wound healing. The adjustment of the parameters involved in these reactions permits a precise control over the size, shape, monodispersity, and the surfaces of the nanoparticles. These nanoparticles are being used in the design of new hybrid organic-inorganic or inorganic nanomaterials for biomedical applications.

Download Full-text

Highly Sensitive and Selective Colorimetric Detection of Methylmercury Based on DNA Functionalized Gold Nanoparticles

Sensors ◽

10.3390/s18082679 ◽

2018 ◽

Vol 18 (8) ◽

pp. 2679 ◽

Cited By ~ 6

Author(s):

Zheng-Jun Xie ◽

Xian-Yu Bao ◽

Chi-Fang Peng

Keyword(s):

Gold Nanoparticles ◽

Catalytic Activity ◽

Limit Of Detection ◽

Low Cost ◽

Colorimetric Detection ◽

Colorimetric Method ◽

Optimal Conditions ◽

Surface Deposition ◽

Highly Sensitive ◽

Dna Strand

A new colorimetric detection of methylmercury (CH3Hg+) was developed, which was based on the surface deposition of Hg enhancing the catalytic activity of gold nanoparticles (AuNPs). The AuNPs were functionalized with a specific DNA strand (HT7) recognizing CH3Hg+, which was used to capture and separate CH3Hg+ by centrifugation. It was found that the CH3Hg+ reduction resulted in the deposition of Hg onto the surface of AuNPs. As a result, the catalytic activity of the AuNPs toward the chromogenic reaction of 3,3,5,5-tetramethylbenzidine (TMB)-H2O2 was remarkably enhanced. Under optimal conditions, a limit of detection of 5.0 nM was obtained for CH3Hg+ with a linear range of 10–200 nM. We demonstrated that the colorimetric method was fairly simple with a low cost and can be conveniently applied to CH3Hg+ detection in environmental samples.

Download Full-text

Alginate-Mediated Synthesis of Hetero-Shaped Silver Nanoparticles and Their Hydrogen Peroxide Sensing Ability

Molecules ◽

10.3390/molecules25030435 ◽

2020 ◽

Vol 25 (3) ◽

pp. 435 ◽

Cited By ~ 3

Author(s):

Sneha Bhagyaraj ◽

Igor Krupa

Keyword(s):

Hydrogen Peroxide ◽

Particle Size ◽

Silver Nanoparticles ◽

Linear Response ◽

X Ray Diffraction ◽

Ag Nps ◽

X Ray ◽

Transmission Electron ◽

Wide Range ◽

Pollution Detection

A new method for the simple synthesis of stable heterostructured biopolymer (sodium alginate)-capped silver nanoparticles (Ag-NPs) based on green chemistry is reported. The as-prepared nanoparticles were characterized using the ultraviolet-visible (UV-Vis) absorption spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and dynamic light scattering (DLS) techniques. The results showed that the as-prepared Ag-NPs have a heterostructured morphology with particle size in the range 30 ± 18–60 ± 25 nm, showing a zeta potential of −62 mV. The silver nanoparticle formation was confirmed from UV-Vis spectra showing 424 nm as maximum absorption. The particle size and crystallinity of the as-synthesized nanoparticles were analyzed using TEM and XRD measurements, respectively. FTIR spectra confirmed the presence of alginate as capping agent to stabilize the nanoparticles. The Ag-NPs also showed excellent sensing capability, with a linear response to hydrogen peroxide spanning a wide range of concentrations from 10−1 to 10−7 M, which indicates their high potential for water treatment applications, such as pollution detection and nanofiltration composites.

Download Full-text

Fabrication of Interconnected Plasmonic Spherical Silver Nanoparticles with Enhanced Localized Surface Plasmon Resonance (LSPR) Peaks Using Quince Leaf Extract Solution

Nanomaterials ◽

10.3390/nano9111557 ◽

2019 ◽

Vol 9 (11) ◽

pp. 1557 ◽

Cited By ~ 11

Author(s):

Shujahadeen B. Aziz ◽

Govar Hussein ◽

M. A. Brza ◽

Sewara J. Mohammed ◽

R. T. Abdulwahid ◽

...

Keyword(s):

Silver Nanoparticles ◽

Surface Plasmon Resonance ◽

Surface Plasmon ◽

Plasmon Resonance ◽

Localized Surface Plasmon Resonance ◽

Low Cost ◽

Ftir Spectrum ◽

Localized Surface Plasmon ◽

Ag Nps ◽

Extract Solution

Interconnected spherical metallic silver nanoparticles (Ag NPs) were synthesized in the current study using a green chemistry method. The reduction of silver ions to Ag NPs was carried out with low-cost and eco-friendly quince leaves. For the first time, it was confirmed that the extract solution of quince leaves could be used to perform green production of Ag NPs. Fourier transform infrared spectroscopy (FTIR) was conducted to identify the potential biomolecules that were involved in the Ag NPs. The results depicted that the biosynthesis of Ag NPs through the extract solution of quince leaf was a low-cost, clean, and safe method, which did not make use of any contaminated element and hence, had no undesirable effects. The majority of the peaks in the FTIR spectrum of quince leaf extracts also emerged in the FTIR spectrum of Ag NPs but they were found to be of less severe intensity. The silver ion reduction was elaborated in detail on the basis of the FTIR outcomes. In addition, through X-ray diffraction (XRD) analysis, the Ag NPs were also confirmed to be crystalline in type, owing to the appearance of distinct peaks related to the Ag NPs. The creation of Ag NPs was furthermore confirmed by using absorption spectrum, in which a localized surface plasmon resonance (LSPR) peak at 480 nm was observed. The LSPR peak achieved in the present work was found to be of great interest compared to those reported in literature. Field emission scanning electron microscopy (FESEM) images were used to provide the morphology and grain size of Ag NPs. It was shown from the FESEM images that the Ag NPs had interconnected spherical morphology.

Download Full-text

One-Step Hydrothermal Synthesis of N, Fe-Codoped Carbon Dots as Mimic Peroxidase and Application on Hydrogen Peroxide and Glucose Detection

Journal of Nanomaterials ◽

10.1155/2020/1363212 ◽

2020 ◽

Vol 2020 ◽

pp. 1-11

Author(s):

Yan Li ◽

Yuhui Weng ◽

Shikong Lu ◽

Meihua Xue ◽

Bixia Yao ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Photoelectron Spectroscopy ◽

Carbon Dots ◽

Color Change ◽

Limit Of Detection ◽

Colorimetric Detection ◽

Catalytic Efficiency ◽

Transmission Electron ◽

One Step ◽

First Time

In this paper, N, Fe-codoped carbon dots (N, Fe-CDs) were synthesized from β-cyclodextrin, ethylenediamine, and ferric chloride for the first time using a convenient one-step hydrothermal method. The obtained N, Fe-CDs were characterized by various methods including transmission electron microscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy. The N, Fe-CDs exhibited better catalytic activity than horseradish peroxidase (HRP) and caused an evident color change for 3,3′,5,5′-tetramethylbenzidine in the presence of H2O2. Kinetic experiments show that the apparent Km value for the N, Fe-CDs with TMB (0.40 mM) or H2O2 (0.35 mM) as the substrate was lower than that of HRP (0.43 and 3.70 mM), suggesting that the N, Fe-CDs have a much higher affinity for TMB and H2O2 than HRP. The Km/Vmax value for the N, Fe-CDs (21.74×103·s for H2O2) is significantly lower than that for HRP (42.53×103·s), suggesting that the N, Fe-CDs have a stronger catalytic efficiency for H2O2 than HRP. Furthermore, a highly efficient and sensitive colorimetric detection method for glucose was developed using the N, Fe-CDs as mimic peroxidase to detect the hydrogen peroxide generated by the oxidation of glucose by glucose oxidase. The limit of detection for H2O2 and glucose was found to be 0.52 and 3.0 μM, respectively. The obtained N, Fe-codoped carbon dots, which possess simulated peroxidase activity, can potentially be used in the field of biotechnology.

Download Full-text