Biosynthesis of Ag–Pd bimetallic alloy nanoparticles through hydrolysis of cellulose triggered by silver sulfate

Li, Xianxue; Odoom‐Wubah, Tareque; Huang, Jiale

doi:10.1039/c8ra04301a

Cited by 15 publications

(6 citation statements)

References 36 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bands at 2917 and 2850 cm − 1 were characteristic of C–H stretching [ 8 , 48 ], while bands at 1637 and 1535 cm − 1 could be attributed to amides I and II, respectively [ 38 , 47 ]. An intense band at 1371 cm − 1 was attributed to bending vibration of C–H of methyl groups [ 46 , 49 ] and/or stretching of C–N of aromatic amines [ 8 , 38 , 47 ]. A low intensity band at 1249 cm − 1 corresponded to amine C–N stretching [ 47 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

Influence of the capping of biogenic silver nanoparticles on their toxicity and mechanism of action towards Sclerotinia sclerotiorum

et al. 2021

View full text Add to dashboard Cite

Background Biogenic nanoparticles possess a capping of biomolecules derived from the organism employed in the synthesis, which contributes to their stability and biological activity. These nanoparticles have been highlighted for the control of phytopathogens, so there is a need to understand their composition, mechanisms of action, and toxicity. This study aimed to investigate the importance of the capping and compare the effects of capped and uncapped biogenic silver nanoparticles synthesized using the filtrate of Trichoderma harzianum against the phytopathogenic fungus Sclerotinia sclerotiorum. Capping removal, investigation of the composition of the capping and physico-chemical characterization of the capped and uncapped nanoparticles were performed. The effects of the nanoparticles on S. sclerotiorum were evaluated in vitro. Cytotoxicity and genotoxicity of the nanoparticles on different cell lines and its effects on nontarget microorganisms were also investigated. Results The capped and uncapped nanoparticles showed spherical morphology, with greater diameter of the uncapped ones. Functional groups of biomolecules, protein bands and the hydrolytic enzymes NAGase, β-1,3-glucanase, chitinase and acid protease from T. harzianum were detected in the capping. The capped nanoparticles showed great inhibitory potential against S. sclerotiorum, while the uncapped nanoparticles were ineffective. There was no difference in cytotoxicity comparing capped and uncapped nanoparticles, however higher genotoxicity of the uncapped nanoparticles was observed towards the cell lines. Regarding the effects on nontarget microorganisms, in the minimal inhibitory concentration assay only the capped nanoparticles inhibited microorganisms of agricultural importance, while in the molecular analysis of the soil microbiota there were major changes in the soils exposed to the uncapped nanoparticles. Conclusions The results suggest that the capping played an important role in controlling nanoparticle size and contributed to the biological activity of the nanoparticles against S. sclerotiorum. This study opens perspectives for investigations concerning the application of these nanoparticles for the control of phytopathogens.

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of the capping of biogenic silver nanoparticles on their toxicity and mechanism of action towards Sclerotinia sclerotiorum

et al. 2021

View full text Add to dashboard Cite

show abstract

“…There have been a number of reports on the synthesis of bimetallic nanostructures using cellulose and hemicellulose, which are known scaffolding components of the plant cell wall. For example, Li et al used filter paper directly as cellulose to synthesize alloyed Ag–Pd nanoparticles under hydrothermal conditions at 200 °C . The high temperature facilitated the hydrolysis of cellulose, which is necessary to expose the reducing functional moieties that will enable the reduction of the metal ions.…”

Section: Biogenic Synthesismentioning

confidence: 99%

“…For example, Li et al used filter paper directly as cellulose to synthesize alloyed Ag−Pd nanoparticles under hydrothermal conditions at 200 °C. 112 The high temperature facilitated the hydrolysis of cellulose, which is necessary to expose the reducing functional moieties that will enable the reduction of the metal ions. They employed Ag 2 SO 4 as the source of Ag as well as of H 2 SO 4 , which can catalyze the cellulose hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

Controllable Synthesis of Bimetallic Nanostructures Using Biogenic Reagents: A Green Perspective

Ramos

Regulacio

2021

ACS Omega

View full text Add to dashboard Cite

Bimetallic nanostructures are emerging as a significant class of metal nanomaterials due to their exceptional properties that are useful in various areas of science and technology. When used for catalysis and sensing applications, bimetallic nanostructures have been noted to exhibit better performance relative to their monometallic counterparts owing to synergistic effects. Furthermore, their dual metal composition and configuration can be modulated to achieve optimal activity for the desired functions. However, as with other nanostructured metals, bimetallic nanostructures are usually prepared through wet chemical routes that involve the use of harsh reducing agents and hazardous stabilizing agents. In response to intensifying concerns over the toxicity of chemicals used in nanomaterial synthesis, the scientific community has increasingly turned its attention toward environmentally and biologically compatible reagents that can enable green and sustainable nanofabrication processes. This article aims to provide an evaluation of the green synthetic methods of constructing bimetallic nanostructures, with emphasis on the use of biogenic resources (e.g., plant extracts, DNA, proteins) as safe and practical reagents. Special attention is devoted to biogenic synthetic protocols that demonstrate controllable nanoscale features, such as size, composition, morphology, and configuration. The potential use of these biogenically prepared bimetallic nanostructures as catalysts and sensors is also discussed. It is hoped that this article will serve as a valuable reference on bimetallic nanostructures and will help fuel new ideas for the development of more eco-friendly strategies for the controllable synthesis of various types of nanostructured bimetallic systems.

show abstract

“…AgPd alloy powder has been used to electronic and dental material widely. The paste derived from AgPd alloy powder was used as the electrode for multilayer ceramic capacitor (MLCC), 13) low temperature co-fired ceramic (LTCC), 4,5) thick-film hybrid integrated circuits, 6) surge resistor and inductor, etc. When the AgPd paste is screen printed and sintered, it is required to use AgPd alloy powder with particle characteristics such as uniform morphology, narrow size distribution, non-aggregation and high purity.…”

Section: Introductionmentioning

confidence: 99%

“…When the AgPd paste is screen printed and sintered, it is required to use AgPd alloy powder with particle characteristics such as uniform morphology, narrow size distribution, non-aggregation and high purity. So far various types of methods have been developed to synthesis AgPd alloy powder such as wet chemical reduction, 711) hydrothermal method, 12,13) spray pyrolysis. 1417) It was known that wet chemical reduction could easily prepare AgPd alloy powder in comparison with other method.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Spherical AgPd Alloy Powder through Wet Chemical Reduction Method

Ogihara

Kodera

2020

Mater. Trans.

View full text Add to dashboard Cite

Spherical AgPd alloy powder was prepared through the reaction of metal nitrate and reducing agent. Natural gum Arabic was used as a dispersant. SEM observation showed that as-prepared particles had spherical morphology with narrow size distribution. Powder X-ray diffraction showed that as-prepared powder was crystallized regardless of molar ratio of Ag and Pd and alloyed. Fluorescent X-ray analysis showed that the atomic ratio of Ag and Pd in as-prepared powder was in good agreement with that of starting solution. The particle size (D 50) of as-prepared powder was decreased with increasing the reaction temperature and the content of gum Arabic. The D 50 increased with increasing starting solution concentration. It was assumed from the change of particle number density that the particle growth was due to the diffusion of Ag and Pd ions from starting solution. The thickness of gum Arabic layer on Ag 90 Pd 10 and Ag 40 Pd 60 alloy particles at gum Arabic content of 2 g/cm 3 was 20 nm and 22 nm, respectively and increased to 34 nm and 31 nm, respectively, with increasing gum Arabic content. The specific resistivity of Ag 90 Pd 10 paste was 6.2 © 10 ¹8 ³•m at 1000°C. The specific resistivity of Ag 50 Pd 50 paste and Ag 40 Pd 60 paste was 2.6 © 10 ¹7 ³•m at 1400°C.

show abstract

Biosynthesis of Ag–Pd bimetallic alloy nanoparticles through hydrolysis of cellulose triggered by silver sulfate

Abstract: We report a simple but efficient biological route based on the hydrolysis of cellulose to synthesize Ag–Pd alloy nanoparticles (NPs) under hydrothermal conditions.

Cited by 15 publications

References 36 publications

Influence of the capping of biogenic silver nanoparticles on their toxicity and mechanism of action towards Sclerotinia sclerotiorum

Influence of the capping of biogenic silver nanoparticles on their toxicity and mechanism of action towards Sclerotinia sclerotiorum

Controllable Synthesis of Bimetallic Nanostructures Using Biogenic Reagents: A Green Perspective

Preparation and Characterization of Spherical AgPd Alloy Powder through Wet Chemical Reduction Method

Contact Info

Product

Resources

About