Results 21 to 30 of about 659,039 (264)

Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy

open access: yesPolymer Testing, 2021
Cyclization reaction of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) [P(AN-co-AMPS)] copolymer during thermal oxidative stabilization (TOS) process was investigated by FTIR and two dimensional (2D) correlation analysis technique. The
Zhipeng He   +8 more
doaj   +1 more source

Alloying Iron into Palladium Nanoparticles for an Efficient Catalyst in Acetylene Dicarbonylation

open access: yesNanomaterials, 2022
Motivated by the prominent catalytic performance and durability of nanoalloy catalysts, the Pd-based bimetallic nanoalloy catalysts were prepared using an aqueous reduction method.
Yuchen Zhang   +6 more
doaj   +1 more source

Highly Efficient Quasi-Solid-State Asymmetric Supercapacitors Based on MoS2/MWCNT and PANI/MWCNT Composite Electrodes

open access: yesNanoscale Research Letters, 2019
Molybdenum disulfide (MoS2) and polyaniline (PANI) electrodes were decorated with multi-walled carbon nanotubes (MWCNTs) on the basis of a facial hydrothermal and in situ polymerization methods and served in the asymmetric supercapacitor (ASC).
Bing Cheng   +5 more
doaj   +1 more source

Critical analysis of the response function in low-dimensional materials [PDF]

open access: yesJournal of Physics: Condensed Matter, 2021
Abstract The presence of sharp peaks in the real part of the static dielectric response function are usually accepted as indication of charge or spin instabilities in a material. However, there are misconceptions that Fermi surface (FS) nesting guarantees a peak in the response function like in one-dimensional systems, and, in ...
Simon Divilov   +3 more
openaire   +4 more sources

Combining Zn0.76Co0.24S with S-doped graphene as high-performance anode materials for lithium- and sodium-ion batteries

open access: yesNanotechnology Reviews, 2020
An easy and facile hydrothermal method is presented to synthesize hybrid materials of hollow mesoporous Zn0.76Co0.24S nanospheres anchored on reduced graphene oxide (rGO) sheets (Zn0.76Co0.24S@N/S-rGO), in which the obtained Zn0.76Co0.24S nanospheres are
Lin Yemao   +5 more
doaj   +1 more source

Tungsten Phosphide Microsheets In‐Situ Grown on Carbon Fiber as Counter Electrode Catalyst for Efficient Dye‐Sensitized Solar Cells

open access: yesAdvanced Materials Interfaces, 2023
The development of low‐cost, green, and pollution‐free counter electrode materials with high catalytic activity plays a critical role in improving the photovoltaic performance of dye‐sensitized solar cells (DSSCs).
Mian Gao   +7 more
doaj   +1 more source

Biobased furan-functionalized high-performance poly (aryl ether ketone) with low dielectric constant and low dielectric loss

open access: yesChemical Engineering Journal Advances, 2023
Furandicarboxylic acid is considered one of the most representative biomass matrix platforms and has been widely used to synthesize various novel biomaterials.
Ludi Shi   +9 more
doaj   +1 more source

Oxidation behavior of graphene-coated copper at intrinsic graphene defects of different origins

open access: yesNature Communications, 2017
Graphene holds promise as a protective coating; however, lattice defects may hinder its practical applicability. Here, the authors investigate the oxidation behavior of graphene-coated copper foils and unveil the interplay between structural defects and ...
Jinsung Kwak   +8 more
doaj   +1 more source

High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth

open access: yesNanoscale Research Letters, 2017
Very low power-consumption distributed feedback (DFB) quantum cascade lasers (QCLs) at the wavelength around 4.9 μm were fabricated by conventional process without lateral regrowth of InP:Fe or using sidewall grating.
Zhi-Wei Jia   +10 more
doaj   +1 more source

Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers

open access: yesNanoscale Research Letters, 2017
In the present work, an ultra-low power consumption substrate-emitting distributed feedback (DFB) quantum cascade laser (QCL) was developed. The continuous-wave (CW) threshold power dissipation is reduced to 0.43 W at 25 °C by shortening the cavity ...
Chuan-Wei Liu   +9 more
doaj   +1 more source

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