Journal ArticleDOI
Ferromagnetic CoPt3 Nanowires: Structural Evolution from fcc to Ordered L12
Hao Ming Chen,Chia Fen Hsin,Po Yuan Chen,Ru-Shi Liu,Shu Fen Hu,Chao Yuan Huang,Jyh-Fu Lee,Ling-Yun Jang +7 more
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TLDR
The mechanism exhibited by these CoPt(3) nanowires is proposed to explain the strong correlation between their magnetic character and their atomic distribution.Abstract:
This investigation demonstrates the magnetic properties and nanostructures of CoPt3 wire arrays that were fabricated by electrodeposition using a porous alumina template. The X-ray absorption analysis clearly verified the occurrence of a phase transition in CoPt3 nanowires. This phase transition significantly influences the magnetic properties and enhances coercivity and squareness. The phase transition of CoPt3 nanowires was from a random alloy distribution to anisotropically ordered CoPt3 (L12). The thermally induced phase transition of CoPt3 nanowires to ordered L12 CoPt3 through a “cluster-in-cluster” intermediate state via interdiffusion processes is revealed. The mechanism exhibited by these CoPt3 nanowires is proposed to explain the strong correlation between their magnetic character and their atomic distribution.read more
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Plasmon Inducing Effects for Enhanced Photoelectrochemical Water Splitting: X-ray Absorption Approach to Electronic Structures
Hao Ming Chen,Chih Kai Chen,Chih Jung Chen,Cheng Liang Chien,Pin Chieh Wu,Bo Han Cheng,You Zhe Ho,Ming Lun Tseng,Ying-Ya Hsu,Ting-Shan Chan,Jyh-Fu Lee,Ru-Shi Liu,Din Ping Tsai,Din Ping Tsai +13 more
TL;DR: These findings support a new approach to investigating localized plasmon-induced effects and charge separation in photoelectrochemical processes, and solar water splitting was used herein as platform to explore mechanisms of enhancement of surface plAsmon resonance.
Journal ArticleDOI
Crystal phase-controlled synthesis, properties and applications of noble metal nanomaterials
Zhanxi Fan,Hua Zhang +1 more
TL;DR: This tutorial review will give an overview of the latest research progress in the crystal phase-controlled synthesis of noble metal nanomaterials and provide some perspectives on the challenges and opportunities in this emerging research field.
Journal ArticleDOI
Ni@NiO Core–Shell Structure-Modified Nitrogen-Doped InTaO4 for Solar-Driven Highly Efficient CO2 Reduction to Methanol
TL;DR: In this paper, the photocatalytic properties and activities of N-doped InTaOO4-based photocatalyst were demonstrated by impregnating Ni and the use of a modified Ni@NiO core-shell nanostructure-cocatalysis method for the reduction of CO2 to methanol.
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Architecture of Metallic Nanostructures: Synthesis Strategy and Specific Applications
Hao Ming Chen,Ru-Shi Liu +1 more
TL;DR: In this article, the shape of metallic nanostructures and their physical and chemical properties are discussed, and general strategies for these methods are discussed and related recent research directions are also addressed.
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Bimetallic nanostructures with magnetic and noble metals and their physicochemical applications
Sibin Duan,Rongming Wang +1 more
TL;DR: In this paper, the particular properties of bimetallic nanomaterials, especially their magnetic, catalytic and optical properties, are presented, and the advance in electron microscopy makes it possible to understand the nanostructural materials at much higher level than before, which helps to disclose the relationship between the microstructures and properties qualitatively and quantitatively.
References
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Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering
Shuming Nie,Steven R. Emory +1 more
TL;DR: In this article, surface-enhanced Raman scattering was used to detect single molecules and single nanoparticles at room temperature with the use of surface enhanced Raman, and the intrinsic Raman enhancement factors were on the order of 10 14 to 10 15, much larger than the ensemble-averaged values derived from conventional measurements.
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Ordered Metal Nanohole Arrays Made by a Two-Step Replication of Honeycomb Structures of Anodic Alumina
Hideki Masuda,Kenji Fukuda +1 more
TL;DR: A highly ordered metal nanohole array (platinum and gold) was fabricated by a two-step replication of the honeycomb structure of anodic porous alumina that showed a notable color change compared with bulk gold.
Journal ArticleDOI
Onset of Catalytic Activity of Gold Clusters on Titania with the Appearance of Nonmetallic Properties
Mika Valden,X. Lai,D. W. Goodman +2 more
TL;DR: Results suggest that supported clusters, in general, may have unusual catalytic properties as one dimension of the cluster becomes smaller than three atomic spacings.
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Nanomaterials: a membrane-based synthetic approach.
TL;DR: A relatively new method for preparing nanomaterials, membrane-based synthesis, is reviewed, which entails synthesis of the desired material within the pores of a nanoporous membrane.
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Nanoparticles with Raman Spectroscopic Fingerprints for DNA and RNA Detection
TL;DR: Six dissimilar DNA targets with six Raman-labeled nanoparticle probes were distinguished, as well as two RNA targets with single nucleotide polymorphisms, and the current unoptimized detection limit of this method is 20 femtomolar.
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