Using melt spinning technology, we successfully synthesized a series of Fe-rich Fe–P–C amorphous alloys exhibiting high saturation magnetization（Bs）, low coercivity（Hc）, and excellent bending ductility. These al...
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Using melt spinning technology, we successfully synthesized a series of Fe-rich Fe–P–C amorphous alloys exhibiting high saturation magnetization（Bs）, low coercivity（Hc）, and excellent bending ductility. These alloys exhibit low Hcvalues ranging from 4.1 to 7.2 A/m, and high Bsvalues ranging from 1.58 to 1.68 T. Particularly,after annealing at 588 K for 900 s, the Fe83P11C6amorphous alloy showed extraordinary soft magnetic properties:Bsup to 1.68 T, Hconly 4.7 A/m, and the core loss at approximately 1.5 W/kg under the condition of 0.5 T and 50Hz, all of which surpass the reported Fe–P–C ternary amorphous and nanocrystalline alloys. These Fe-rich Fe–P–C alloy ribbon samples exhibit favorable bending ductility in both the as-spun and annealed states. Their simple alloy composition, outstanding soft magnetic properties, and excellent flexibility collectively make these soft magnetic alloys highly promising candidate materials for industrial applications.
This study introduces a multifunctional device based on Cu_(2)O/g-C_(3)N_(4) monitoring and purification p–n heterojunctions(MPHs),seamlessly integrating surface-enhanced Raman scattering(SERS)detection with photocat...
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This study introduces a multifunctional device based on Cu_(2)O/g-C_(3)N_(4) monitoring and purification p–n heterojunctions(MPHs),seamlessly integrating surface-enhanced Raman scattering(SERS)detection with photocatalytic degradation *** SERS and photocatalytic performances of the Cu_(2)O in various morphologies,g-C_(3)N_(4) nanosheets(NSs)and Cu_(2)O/g-C_(3)N_(4) MPHs with different g-C_(3)N_(4) mass ratios were systematically evaluated,with a particular emphasis on the Cu_(2)O/g-C_(3)N_(4)-0.2 MPH,where g-C_(3)N_(4) constituted 20%of the total *** optical and electrochemical tests revealed that the Cu_(2)O/g-C_(3)N_(4)-0.2 MPH effectively enhances charge separation and reduces charge transfer *** Cu_(2)O/g-C_(3)N_(4)-0.2 SERS sensor exhibited a relative standard deviation(RSD)below 15%and achieved an enhancement factor(EF)of 2.43×106 for 4-ATP detection,demonstrating its high sensitivity and ***,it demonstrated a 98.3%degradation efficiency for methyl orange(MO)under visible light within 90 ***,even after 216 days,its photocatalytic efficiency remained at 93.7%,and it retained an 84.0%efficiency after four *** and SEM analyses before and after cycling,as well as after 216 days,confirmed the structural and morphological stability of the composite,demonstrating its cyclic and long-term *** excellent performance of the Cu_(2)O/g-C_(3)N_(4) MPH is attributed to its Z-type mechanism,as verified by radical trapping *** evaluation of the self-cleaning performance of the Cu_(2)O/g-C_(3)N_(4)-0.2 SERS sensor demonstrated that its Z-scheme structure not only provides excellent self-cleaning capability but also enables the detection of both individual and mixed pollutants,while significantly enhancing the SERS signal response through an effective charge transfer enhancement mechanism.
With the increase of energy consumption,the shortage of fossil resource,and the aggravation of environmental pollution,the development of cost-effective and environmental friendly bio-based energy storage devices has ...
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With the increase of energy consumption,the shortage of fossil resource,and the aggravation of environmental pollution,the development of cost-effective and environmental friendly bio-based energy storage devices has become an urgent *** the second most abundant natural polymer found in nature,lignin is mainly produced as the by-product of paper pulping and bio-refining *** possesses several inherent advantages,such as low-cost,high carbon content,abundant functional groups,and bio-renewable,making it an attractive candidate for the rechargeable battery ***,there has been a surge of research interest in utilizing lignin or lignin-based carbon materials as the components of lithium-ion(LIBs)or sodium-ion batteries(SIBs),including the electrode,binder,separator,and *** review provides a comprehensive overview on the research progress of lignin-derived materials used in LIBs/SIBs,especially the application of lignin-based carbons as the anodes of LIBs/*** preparation methods and properties of lignin-derived materials with different dimensions are systemically discussed,which emphasizes on the relationship between the chemical/physical structures of lignin-derived materials and the performances of LIBs/*** current challenges and future prospects of lignin-derived materials in energy storage devices are also proposed.
BiVO_(4)(BVO)is a promising material as the photoanode for use in photoelectrochemical ***,the high charge recombination and slow charge transfer of the BVO have been obstacles to achieving satisfactory photoelectroch...
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BiVO_(4)(BVO)is a promising material as the photoanode for use in photoelectrochemical ***,the high charge recombination and slow charge transfer of the BVO have been obstacles to achieving satisfactory photoelectrochemical *** address this,various modifications have been attempted,including the use of ferroelectric *** materials can form a permanent polarization within the layer,enhancing the separation and transport of photo-excited electron-hole *** this study,we propose a novel approach by depositing an epitaxial BiFeO_(3)(BFO)thin film underneath the BVO thin film(BVO/BFO)to harness the ferroelectric property of *** self-polarization of the inserted BFO thin film simultaneously functions as a buffer layer to enhance charge transport and a hole-blocking layer to reduce charge *** a result,the BVO/BFO photoanodes showed more than 3.5 times higher photocurrent density(0.65 mA cm^(-2))at 1.23 V_(RHE)under the illumination compared to the bare BVO photoanodes(0.18 m A cm^(-2)),which is consistent with the increase of the applied bias photon-to-current conversion efficiencies(ABPE)and the result of electrochemical impedance spectroscopy(EIS)*** results can be attributed to the self-polarization exhibited by the inserted BFO thin film,which promoted the charge separation and transfer efficiency of the BVO photoanodes.
Molybdenum disulfide(MoS_(2))has garnered significant attention in the field of catalysis due to the high density of active sites in its unique two-dimensional(2D)structure,which could be developed into numerous high-...
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Molybdenum disulfide(MoS_(2))has garnered significant attention in the field of catalysis due to the high density of active sites in its unique two-dimensional(2D)structure,which could be developed into numerous high-performance *** synthesis of ultra-small MoS2 particles(<10 nm)is highly desired in various experimental *** ultra-small structure could often lead to a distinct S-Mo coordination state and nonstoichiometric composition in MoSx,minimizing in-plane active sites of the 2D structure and making it probable to regulate the atomic and electronic structure of its intrinsic active sites on a large extent,especially in MoSx *** article summarizes the recent progress of catalysis over ultra-small undoped MoS_(2) particles for renewable fuel *** a systematic review of their synthesis,structural,and spectral characteristics,as well as the relationship between their catalytic performance and inherent defects,we aim to provide insights into catalysis over this matrix that may potentially enable advancement in the development of high-performance MoS_(2)-based catalysts for sustainable energy generation in the future.
Insulin is an essential and versatile protein taking part in the control of blood glucose levels and protein ***,under prolonged storage or high temperature stress,insulin tends to unfold and aggregate into toxic amyl...
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Insulin is an essential and versatile protein taking part in the control of blood glucose levels and protein ***,under prolonged storage or high temperature stress,insulin tends to unfold and aggregate into toxic amyloid fibrils,leading to loss of physiological *** by natural chaperones,a series of temperature-sensitive polycaprolactone-based micelles were designed to prevent insulin from *** micelles were fabricated through the self-assembly of amphiphilic copolymers of methoxy poly(ethylene glycol)-poly(4-diethylformamide caprolactone-co-caprolactone)(mPEG_(17)-P(DECL-co-CL)),which had a regular spherical morphology with particle sizes of about 100 *** addition,the lower critical solution temperature(LCST)of the micelles could be tuned to 9 and 29℃by changing the ratio of DECL to *** from the temperature-sensitivity of DECL segment,the binding ability of micelles to insulin could be modulated by changing the *** LCST,micelles effectively inhibited insulin aggregation and protected it from thermal inactivation due to the strong binding ability between the hydrophobic segment DECL and *** LCST,DECL segment returned to hydrophilic and bound weakly with insulin,leading to the release of insulin and assisting in its recovery of secondary ***,these temperature-sensitive micelles provided an effective strategy for insulin protection.
The regulation of sintering temperature in spark plasma sintering enables the achievement of grain refinement,phase control,and performance enhancement in the preparation of AZ91D magnesium *** study investigates the ...
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The regulation of sintering temperature in spark plasma sintering enables the achievement of grain refinement,phase control,and performance enhancement in the preparation of AZ91D magnesium *** study investigates the influence of sintering temperature on microstructural evolution and mechanical properties of the AZ91D *** analysis was conducted using scanning electron microscopy,electron backscatter diffraction,and X-ray *** structures and mechanical behaviors were examined through hardness and tensile *** sintering temperatures resulted in reduced secondary phase content,leading to a decrease in mechanical *** alloy exhibited optimal mechanical properties at 320℃.The nanoparticle coarsening process and particle evolution during sintering were simulated using phase field *** optimizing the sintering temperature,precise control over microstructural and textural evolution can be achieved,facilitating the attainment of desired hardness levels and mechanical properties.
Organosulfur materials are a sustainable alternative to the present-day layered oxide cathodes in lithium-based *** such organosulfur material that was intensely explored from the 1990s to early 2010s is 2,5-dimercapt...
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Organosulfur materials are a sustainable alternative to the present-day layered oxide cathodes in lithium-based *** such organosulfur material that was intensely explored from the 1990s to early 2010s is 2,5-dimercapto-1,3,4-thiadiazole(DMCT).However,research interest declined as the electrode reactions with DMCT were assumed to be too sluggish to be *** with the advances in metal-sulfur batteries,we revisit DMCT-based materials in the form of poly[tetrathio-2,5-(1,3,4-thiadiazole)],referred to as *** an appropriate choice of electrode design and electrolyte,pDMCT-S cathode paired with a Li-metal anode shows a capacity of 715 mA h g^(-1)and a Coulombic efficiency of 97.7%at a C/10 rate,thus quelling the concerns of sluggish ***,pDMCT-S shows significantly improved long-term cyclability compared to a sulfur *** into the origin of the stability reveals that the discharge product Li-DMCT in its mesomeric form can strongly bind to polysulfides,preventing their dissolution into the electrolyte and *** unique mechanism solves a critical problem faced by sulfur ***,this mechanism results in a stable performance of pDMCT-S with Na-metal cells as *** study opens the potential for exploring other organic materials that have inherent polysulfide sequestering capabilities,enabling long-life metal-sulfur batteries.
Layered sodium trititanate（Na2Ti3O7,NTO） is a promising anode material for sodium-ion batteries（NIBs）for large-scale energy storage applications because of its relatively low charge potential and low ***,NTO suffe...
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Layered sodium trititanate（Na2Ti3O7,NTO） is a promising anode material for sodium-ion batteries（NIBs）for large-scale energy storage applications because of its relatively low charge potential and low ***,NTO suffers from unsatisfactory structural stability against cycling and poor electron ***,an isovalent doping strategy using Sn4+to partially replace Ti4+is demonstrated for improving the cycling stability and rate capability of *** isovalent doping of Sn4+does not alter the valence state of Ti4+,thus maintaining the lattice integrality and structural ***,the Sn4+dopant creates more Na+-preferable travel channels and expands the interlayer spacing,thus increasing Na+*** a result,a Sn4+-doped Na2Ti3O7（NSTO） electrode exhibits a reversible Na+storage specific capacity of 176 mA h g-1at 0.1C and an ultra-long cycling life with 80.2% capacity retention after5000 cycles at 1C,far outperforming the undoped and aliovalent-doping NTO electrodes reported in the *** addition,the NSTO electrode delivers a rate capability of 102 mA h g-1at 5C,higher than that of the NTO electrode(62 mA h g-1).In situ X-ray diffraction characterization results reveal that Na+storage in NSTO undergoes a partial solid-solution reaction mechanism,which is completely different from the two-phase transition mechanism of *** functional theory calculation results demonstrate that Sn4+doping strengthens the Ti-O bond,contributing to structural *** work provides a robust approach to significantly improving the electrochemical performance of NTO-based anode materials for developing long-life NIBs.
Rare earth-doped inorganic compounds contribute mostly to the family of persistent luminescent materials due to the versatile energy levels of rare earth *** of the key research aims is to match the trap level stemmin...
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Rare earth-doped inorganic compounds contribute mostly to the family of persistent luminescent materials due to the versatile energy levels of rare earth *** of the key research aims is to match the trap level stemming from the doped rare earth ion or intrinsic defects to the electronic structure of the host,and therefore thermoluminescence measurement becomes a radical technology in studying trap depth,which is one of the significant parameters that determine the properties of persistent luminescence and photostimulated ***,the results of trap depth obtained by different thermoluminescence methods are quite different so that they are not ***,we analyzed different thermoluminescence methods,selected and improved the traditional peak position method of T_(m)/500 to be E=(-0.94Inβ+30.09)kT_(m).Only the experimental heating rate(β)is needed additionally,but the accuracy is improved greatly in most *** convenient and accurate method will accelerate the discovery of novel rare earth-doped materials.
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