Journal ArticleDOI
General Microwave Route to Single-Crystal Porous Transition Metal Nitrides for Highly Sensitive and Stable Raman Scattering Substrates.
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TLDR
In this article, a general and rapid microwave synthesis method for preparing metallic transition metal nitrides (TMNs) with high specific surface area (122.6-141.7 m2 g-1) and porosity (0.29-0.34 cm3 g1) was proposed.Abstract:
The synthesis of metallic transition metal nitrides (TMNs) has traditionally been performed under harsh conditions, which makes it difficult to prepare TMNs with high surface area and porosity due to the grain sintering. Herein, we report a general and rapid (30 s) microwave synthesis method for preparing TMNs with high specific surface area (122.6-141.7 m2 g-1) and porosity (0.29-0.34 cm3 g-1). Novel single-crystal porous WN, Mo2N, and V2N are first prepared by this method, which exhibits strong surface plasmon resonance, photothermal conversion, and surface-enhanced Raman scattering effects. Different from the conventional low-temperature microwave absorbing media such as water and polymers, as new concept absorbing media, hydrated metal oxides and metallic metal oxides are found to have a remarkable high-temperature microwave heating effect and play key roles in the formation of TMNs. The current research results provide a new-concept microwave method for preparing high lattice energy compounds with high specific surface.read more
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Ultralight and flexible carbon-based phase change composites with high porosity for enhanced shape memory and photothermal conversion performance
TL;DR: In this article , a flexible carbon foam/PEG composite with high thermal conductivity and photothermal conversion capacity was prepared by using carbon foam (CF) as flexible supporting material, hydroxyl boron nitride nanosheets (HO-BNNS) as thermal conductivities filler, and copper oxide (CuO) as photothermal converting agent.
Journal ArticleDOI
In situ synthesis of two-dimensional graphene-like nickel-molybdenum nitride as efficient electrocatalyst towards water-splitting under large-current density.
TL;DR: In this article , a two-dimensional (2D) graphene-like structured nickel-molybdenum nitride (Ni-MoN) on nickel foam (NF), is prepared via facile hydrothermal and following nitridation process.
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An oxygen vacancy-engineered Bi2MoO6 light collector with prominent SERS enhancement for ultrasensitive detection and degradation of organic contaminants
TL;DR: In this article , an oxygen vacancy-engineered bismuth molybdate (Bi2MoO6) light collector with superior SERS sensitivity and high reproducibility was developed as a CM enhancing substrate.
Journal ArticleDOI
Molecular Specificity in the Intense Surface-Enhanced Raman Scattering on Copper(II) 8-Hydroxyquinoline Microcrystals
TL;DR: In this paper , the authors show that π-conjugated copper 8-hydroxyquinolinate (CQ) microcrystals exhibit molecular specificity in SERS enhancement and show unprecedented Raman signal enhancements up to 28,372 ± 1953 for the probe molecule rhodamine-6G, 13,407 ± 1969 for rhodamines B, and 12,816 ± 900 for the copper II-picolinate complex at 785 nm laser excitation.
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Unusual microwave heating of water in reverse micellar solution
TL;DR: In this article , the authors measured real-time temperature changes of liquid samples within a waveguide under MW irradiation at 2.45 GHz and at MW intensities of ~ 3 to ~ 12 W/cm 2 .
References
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Journal ArticleDOI
Shell-isolated nanoparticle-enhanced Raman spectroscopy
Jian-Feng Li,Yi-Fan Huang,Yong( Georgia Inst Technol Sch Mat Sci Engn) Ding,Zhilin Yang,Song Bo Li,Xiao-Shun Zhou,Fengru Fan,Fengru Fan,Wei Zhang,Zhi-You Zhou,De-Yin Wu,Bin Ren,Zhong Lin( Georgia Inst Technol Sch Mat Sci Engn) Wang,Zhong-Qun Tian +13 more
TL;DR: Shell-isolated nanoparticle-enhanced Raman spectroscopy is reported, in which the Raman signal amplification is provided by gold nanoparticles with an ultrathin silica or alumina shell, which significantly expands the flexibility of SERS for useful applications in the materials and life sciences, as well as for the inspection of food safety, drugs, explosives and environment pollutants.
Journal ArticleDOI
Hydrogen-evolution catalysts based on non-noble metal nickel-molybdenum nitride nanosheets.
Wei-Fu Chen,Kotaro Sasaki,Chao Ma,Anatoly I. Frenkel,Nebojsa Marinkovic,James T. Muckerman,Yimei Zhu,Radoslav R. Adzic +7 more
TL;DR: The first synthesis of NiMo nitride nanosheets on a carbon support (NiMoNx/C) is reported, and the high HER electrocatalytic activity of the resulting NiMoNX/C catalyst with low overpotential and small Tafel slope is demonstrated.
Journal ArticleDOI
Surface-Enhanced Raman Spectroscopy for Bioanalysis: Reliability and Challenges
TL;DR: An outlook of the key challenges in bioanalytical SERS, including reproducibility, sensitivity, and spatial and time resolution is given.
Journal ArticleDOI
Porous Doped Silicon Nanowires for Lithium Ion Battery Anode with Long Cycle Life
TL;DR: Experimental and theoretical studies of porous doped silicon nanowires synthesized by direct etching of boron-doped silicon wafers show high structure stability and superior electrochemical performance and long cycle life as anode material in a lithium ion battery.
Journal ArticleDOI
High-quality graphene via microwave reduction of solution-exfoliated graphene oxide
Damien Voiry,Jieun Yang,Jacob Kupferberg,Raymond Fullon,Calvin Lee,Hu Young Jeong,Hyeon Suk Shin,Manish Chhowalla +7 more
TL;DR: A simple, rapid method to reduce GO into pristine graphene using 1- to 2-second pulses of microwaves is reported using microwave-reduced GO (MW- rGO) as the channel material and into particularly high activity for MW-rGO catalyst support toward oxygen evolution reactions.