Novel development of nanoparticles to bimetallic nanoparticles and their composites: A review

Sharma, Gaurav; Kumar, Amit; Sharma, Shweta; Naushad, Mu.; Dwivedi, Ram Prakash; ALOthman, Zeid A.; Mola, Genene Tessema

doi:10.1016/j.jksus.2017.06.012

Cited by 484 publications

(244 citation statements)

References 110 publications

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“…Au and Ag nanoparticles are exceptional nanomaterials that provide a great platform in the biomedical uses of biomolecular recognition, drug delivery, biosensing, and molecular imaging . When related with monometallic nanoparticles, bimetallic nanoparticles have worthy catalytic properties due to the synergetic effects between two metals …”

Section: Introductionmentioning

confidence: 99%

“…[50][51][52][53] When related with monometallic nanoparticles, bimetallic nanoparticles have worthy catalytic properties due to the synergetic effects between two metals. 44,54,55 Authors have described the use of certain higher plants, such as the leaves of Swietenia mahogani, Jasminum sambac, Anacardium occidentale, Commelina nudiflora, and fruit peel of Lansium domesticum 45,48,[56][57][58][59] for the green synthesis of Ag-AuNPs. Also, leaf, seed, seed shell, and pod extracts of Cola nitida have been used to biosynthesize Ag-AuNPs including the cell-free extract of Bacillus safensis; and these have been shown to possess antifungal, dye degradation, larvicidal, anticoagulant, and thrombolytic activities.…”

Section: Introductionmentioning

confidence: 99%

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Silver‐gold alloy nanoparticles biofabricated by fungal xylanases exhibited potent biomedical and catalytic activities

Elegbede

Lateef

Azeez

et al. 2019

Biotechnology Progress

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The search for biocompatible nanoparticles with vast applicability has impacted on exploration of various biomaterials for the synthesis of mono and bimetallic nanoparticles. Xylanase is widely regarded as an industrially important enzyme but its potentials in nanotechnological applications are yet to be fully explored. The current study investigates the exploit of xylanases of Aspergillus niger L3 (NE) and Trichoderma longibrachiatum L2 (TE) produced through valorization of corn‐cob, to synthesize silver‐gold alloy nanoparticles (Ag‐AuNPs). Characterization of the Ag‐AuNPs involved UV–vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy and transmission electron microscopy, while their prospective use as antimicrobial, antioxidant, catalytic, anticoagulant, and thrombolytic agents were studied. The biosynthesized Ag‐AuNPs were ruby red and light purple with surface plasmon resonance at 520 and 534 nm for NEAg‐AuNPs and TEAg‐AuNPs, respectively; while FTIR showed that protein molecules capped and stabilized the nanoparticles. The Ag‐AuNPs were anisotropic with spherical, oval, and irregular shapes having sizes ranging from 6.98 to 52.51 nm. The nanoparticles appreciably inhibited the growth of tested clinical bacteria (23.40–90.70%) and fungi (70.10–89.05%), and also scavenged 2,2‐diphenyl‐1‐picrylhydrazyl (48.51–53.79%) and hydrogen peroxide (80.5–95.50%). Furthermore, the Ag‐AuNPs degraded malachite green (91.39%) and methylene blue (47.10%). Moreover, the Ag‐AuNPs displayed outstanding anticoagulant and thrombolytic activities using human blood. This study further emphasizes the significance of xylanases in nanobiotechnology as it has established the potential of xylanases to synthesize Ag‐AuNPs, which is being reported for the first time.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silver‐gold alloy nanoparticles biofabricated by fungal xylanases exhibited potent biomedical and catalytic activities

Elegbede

Lateef

Azeez

et al. 2019

Biotechnology Progress

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“…[148,149] Core-shell BNP also allow the tuning of the nanoparticles properties, in which specific desired properties are amplified and undesired properties are minimized. Core-shells BNP not only can give a combination of material, electrical, catalytic, optical, and photocatalytic properties from two different metals, but also new properties arising from the synergy between both metals.…”

Section: Core-shell Bimetallic Nanoparticle Inksmentioning

confidence: 99%

Metallic Nanoparticle Inks for 3D Printing of Electronics

Tan

Chua

et al. 2019

Adv Elect Materials

181

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Metallic nanoparticle inks are readily obtainable from the commercial market and are commonly used for fabricating conductive tracks and patterns due to their relatively higher electrical conductivity as compared to other types of inks. These metallic nanoparticle inks are made up of electrically conductive metallic nanoparticles suspended in liquid mediums, with particle size ranging from 1 to 100 nm. However, there are also diverse types of metallic nanoparticle inks in the market (for instance, silver nanoparticle inks, gold nanoparticle inks, and copper nanoparticle inks). Metallic nanoparticle inks of different material compositions can directly influence the final electrical, material, and mechanical properties of the printed patterns. This paper presents an overview of the different types of metallic nanoparticle inks used for the 3D printing of electronics. The strengths and weaknesses of each type of ink are critically reviewed. The challenges and potentials of metallic nanoparticle inks in 3D printed electronics are also discussed. Metallic Nanoparticle InksMetallic nanoparticle inks are suspensions of metallic nanoparticles in liquid mediums (see Figure 2a), in which individual metallic nanoparticle is encapsulated in a layer of insulating organic additives and stabilizing agents (see Figure 2b). The encapsulating organic additives and stabilizing agents help prevent the metallic nanoparticles from agglomeration, but at the same time, also impede the flow of electrons from particles to particles. Therefore, sintering processes are required to remove The three-dimensional (3D) printed electronics additive manufacturing industry sector has grown substantially in the past few years, and there is increasing demand for different types of metallic nanoparticle inks in electronics printing for various applications. Metallic nanoparticle inks are commonly used for fabricating conductive tracks and patterns due to their relatively high electrical conductivity as compared to other types of inks, and they can be further categorized into single-element metallic nanoparticle inks, alloy metallic nanoparticle inks, metallic oxide nanoparticle inks, and core-shell bimetallic nanoparticle (BNP) inks. It is critical to gain a deep understanding of the metallic nanoparticle inks used in 3D printed electronics as the material properties of these inks can directly affect the final electrical and mechanical properties of the printed patterns. This review presents an overview of the available metallic nanoparticle inks used for 3D printing of electronics, and critically reviews the strengths and weaknesses of each type of ink. Finally, the challenges of metallic nanoparticle inks in 3D printed electronics are also discussed along with the future outlook for 3D printed electronics.

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“…[1][2][3] With controlled size, shape, and composition, their excellent catalytic properties have been achieved due to the modified adsorption and dissociation of hydrogen, oxygen, and various other molecules. [4][5][6][7] For the application of Pt catalysts, Pt Pd alloy NCs are attractive not only for reducing high price of Pt but also for enhancing the catalytic efficiency as a result of the synergistic combination of Pt and Pd. [8][9][10] Among various possible morphologies, bumpy nanostructure can offer high surface area-to-volume ratios and thus supply enough active sites for reaction intermediates.…”

Section: Synthesis Of Bimetallic Alloy Nanocrystals (Ncs)mentioning

confidence: 99%