Optically active chiral Ag nanowires

Ma, Liguo; Huang, Zhehao; Duan, Yingying; Shen, Xiangrong; Che, Shunai

doi:10.1007/s40843-015-0058-x

Cited by 20 publications

(14 citation statements)

References 47 publications

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“…TheB runauer-Emmett-Teller (BET) surface area and pore volume were 204 m 2 g À1 and 0.28 cm 3 g À1 ,r espectively (Supporting Information, Figure S4). [11] After loading Co 2+ ions on l-CCNTs by the post-synthetic method, the obtained mixture undergoes another pyrolysis at 800 8 8CinN 2 . [11] After loading Co 2+ ions on l-CCNTs by the post-synthetic method, the obtained mixture undergoes another pyrolysis at 800 8 8CinN 2 .…”

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confidence: 99%

Cobalt–Nitrogen‐Doped Helical Carbonaceous Nanotubes as a Class of Efficient Electrocatalysts for the Oxygen Reduction Reaction

et al. 2018

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The oxygen reduction reaction (ORR) is of significant importance in the development of fuel cells. Now, cobalt-nitrogen-doped chiral carbonaceous nanotubes (l/d-CCNTs-Co) are presented as efficient electrocatalysts for ORR. The chiral template, N-stearyl-l/d-glutamic acid, induces the self-assembly of well-arranged polypyrrole and the formation of ordered graphene carbon with helical structures at the molecular level after the pyrolysis process. Co was subsequently introduced through the post-synthesis method. The obtained l/d-CCNTs-Co exhibits superior ORR performance, including long-term stability and better methanol tolerance compared to achiral Co-doped carbon materials and commercial Pt/C. DFT calculations demonstrate that the charges on the twisted surface of l/d-CCNTs are widely separated; as a result the Co atoms are more exposed on the chiral CCNTs. This work gives us a new understanding of the effects of helical structures in electrocatalysis.

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confidence: 99%

Cobalt–Nitrogen‐Doped Helical Carbonaceous Nanotubes as a Class of Efficient Electrocatalysts for the Oxygen Reduction Reaction

et al. 2018

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“…Synthesis of Ag NWs has been extensively studied because of the excellent electrical conductivity and mechanical robustness for wider applications of electronics [28,36,[38][39][40]. In the most synthesis strategies, AgNO 3 was reported as the most commonly used precursor for the synthesis of Ag NWs.…”

Section: Resultsmentioning

confidence: 99%

Recycling valuable silver from waste generated in diverse nanotemplate reactions

Wang

Liu

et al. 2016

Sci. China Mater.

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The shape-controlled silver nanostructures have been widely used for template synthesis of metal nanostructures with desired morphologies and compositions for specific applications by galvanic replacement reaction, while the silver is sacrificed as oxidized to silver ion and abandoned as by-products. In view of the broad application prospect of the obtained metal nanostructures, the cost and environment problems after the template reactions should be taken into account for the large scale production in the future. To solve this problem, we conceptually demonstrate that the wasted AgCl generated from the template reactions can be easily recycled for the synthesis of valuable Ag nanowires. As representative examples, the average recovery of silver can be about 69.8%-84.6% after the template synthesis of Au/Pt nanostructures. The resynthesized Ag nanowires show uniform size distribution and excellent physical and chemical properties for the fabrication of transparent electrode and template synthesis.

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“…The fabrication of optically active NPs has attracted significant attention over the past decade. Optically active QDs, semiconductor nanorods (SNRs), chiromagnetic NPs, optically active metal NPs, and chiral Ag nanowires, as well as other optically active nanostructures (e.g., twisted α‐HgS and MoS 2 , graphene) . have been created by synthetic technology.…”

Section: The Fabrication Of Chiral Nanostructuresmentioning

confidence: 99%

Chirality‐Based Biosensors

Wang

et al. 2018

Adv Funct Materials

123

120

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The fabrication of chiral nanostructures gives rise to characteristic chiroptical activity, which can be used for chirality-based biosensors. Great progress is made in the use of nanoassemblies for the construction of chiral nanoparticle dimers, pyramids, helices, and twisted structures, and their chiroptical activities correlate with diverse structural geometries and enantiomeric configurations. In DNA-hybridization-based chiral nanoassemblies, the assembly parameters, such as the components, gaps, multicomponents, and the aftergrowth of metal, can result in multiple bands and enhanced chiroptical effects. Based on known chiral nanostructures, the existing chiral nanoassembly-based biosensors together with their targets and signal amplification strategies are reviewed. Chirality involves multiple signals, and multitarget biosensors are introduced with newly developed chiral architectures for the accurate and reliable monitoring of biomarkers in living cells. The interactions between chiral nanoarchitectures and biosystems are also highlighted, which are important not only in the chiral dynamic switching of nano-objects for biomonitoring, but also in manipulating cell growth, proliferation, and adhesion. The future perspectives on chiral fabrication and its use in biosensors are also comprehensively discussed. and future perspectives in chiral fabrication to enhance the chiroptical properties for emerging biosensors application.

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Optically active chiral Ag nanowires

Cited by 20 publications

References 47 publications

Cobalt–Nitrogen‐Doped Helical Carbonaceous Nanotubes as a Class of Efficient Electrocatalysts for the Oxygen Reduction Reaction

Cobalt–Nitrogen‐Doped Helical Carbonaceous Nanotubes as a Class of Efficient Electrocatalysts for the Oxygen Reduction Reaction

Recycling valuable silver from waste generated in diverse nanotemplate reactions

Chirality‐Based Biosensors

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