JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Tiancong Hao,Yuhang Liu,Peili Zhang,Yuhang Xiang,Xiaoning Yang,Qingya Sun,Aming Xie
Magnetic-dielectric synergy is critical to the electromagnetic wave absorption (EWA) performance of carbon/metal absorbers and is closely related to their nanoscale structure. In this work, aromatic dianhydrides with different conjugation lengths (PMDA, NTDA, and PTCDA) were used for ligand engineering of phthalocyanine-derived Ni/C nanocomposites, yielding Ni/C-PMDA, Ni/C-NTDA, and Ni/C-PTCDA. The resulting nanostructural variation regulated carbon ordering, Ni dispersion, and interfacial coupling at the Ni/C heterointerface, thereby redistributing dielectric and magnetic loss behavior. As a result, Ni/C-PMDA shows deep absorption with a reflection loss of −53.30 dB at 2.99 mm, while Ni/C-NTDA achieves a wide effective absorption bandwidth of 6.00 GHz at a thin thickness of 1.92 mm. Moreover, far-field radar cross section simulations on a Ni/C nanocomposite-coated perfect electric conductor (PEC) plate show reduced scattering compared with bare PEC. This work offers a ligand engineering strategy for designing Ni/C nanocomposites with optimized magnetic–dielectric synergy for electromagnetic wave absorption.
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ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
·
2026
·
IF 3.5
Liwei Jia,Yu Zhong,Baoyue Xu,Qianqian Liu,Xin Meng
Orientin inhibited xanthine oxidase with moderate in vitro potency. • Global kinetic fitting supported a mixed-type inhibition mechanism. • Fluorescence quenching verified direct XO–orientin interaction. • Molecular simulations indicated a stable XO–orientin binding mode. • C-glycosylation altered ADMET-related properties versus luteolin. Xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine. It further oxidizes xanthine to uric acid, making it an important target for treating hyperuricemia. This study focused on orientin as a model flavonoid for xanthine oxidase inhibition. We examined whether the C-glycosyl group changes its inhibitory potency, binding pattern, and predicted ADMET profile. In vitro enzyme activity was determined to be 364.79 ± 8.21 μM for the half-inhibitory concentration (IC 50 ) of orientin. Kinetic analysis suggested a mixed-type inhibition pattern. Intrinsic fluorescence quenching further supported the interaction between orientin and XO. Molecular docking and molecular dynamics simulations provided structural insight into the binding mode and stability of the orientin–XO complex. ADMET analysis indicates that orientin has promising pharmaceutical properties. These findings provide a basis for future research focusing on structural optimization, metabolic transformation, and in vivo evaluation. Download: Download high-res image (385KB) Download: Download full-size image
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Liang Zhou,Mingkang Zhang,Jingyi He,Hongbo Wang,Minjia Luo
• Co/TiO 2 @C composites are derived from bimetallic MOF. • • Minimum reflection loss of −64.5 dB at 1.8 mm thickness is achieved. • • Effective absorption bandwidth of 3.2 GHz in X-band. • • Hierarchical structure boosts interfacial and dipole polarization. In this study, disk-shaped MIL-125(Ti,Co)- x precursors were synthesized via a solvothermal method with varying CoCl 2 ·6H 2 O content, and subsequently Co/TiO 2 @C composites were fabricated through a two-step pyrolysis process. The precursor morphology transforms from intact micron-scale disks into thinner flakes, and ultimately into fragmented structures with increasing the cobalt content. The pyrolysis temperature concurrently governed the composition of TiO 2 phase, the degree of carbon graphitization, and the distribution of nanoparticles. The optimized Co/TiO 2 @C(700)-2 composite achieves a minimum reflection loss of −64.5 dB at a matching thickness of 1.8 mm, and exhibits an effective absorption bandwidth of 3.2 GHz at 2.1 mm. The outstanding electromagnetic wave absorption properties stem from a favorable synergy between adequate attenuation and satisfactory impedance matching, supported by the conductive carbon network, abundant defect sites, multiple TiO 2 /carbon heterointerfaces, and hierarchical porous architecture. These results establish the cooperative regulation of electromagnetic wave absorption properties by cobalt content and pyrolysis temperature, offering a strategy for the design of MOF-derived lightweight absorbers with tunable electromagnetic wave absorption. Download: Download high-res image (139KB) Download: Download full-size image
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2025
·
IF 2.9
Hui Li,Zhiwei Zhang,Lianke Zhang,Hualiang Ni,Haiying Qin,Jing Zhang,Hongzhong Chi,Junjing He
Developing highly stable, low-platinum electrocatalysts is crucial for advancing fuel cell technology. In this study, a PtAuPd/C nano multi-principal element alloy catalyst was synthesized by a carbothermal shock method. The average particle size of the PtAuPd/C alloy nanoparticles is around 2.2 nm and the PtAuPd/C exhibits superior catalytic activity and stability towards the oxygen reduction reaction (ORR) compared to the binary alloy catalysts (PtAu/C and PtPd/C). The PtAuPd/C displays a half-wave potential (E1/2) of 0.837 V and a Tafel slope of 53.1 mV dec−1. It demonstrates only a minimal E1/2 loss of 3.5 mV after 40 000 cycles and a mass activity retention rate of 78.2%. When employed as a cathode catalyst within a direct borohydride fuel cell, the PtAuPd/C catalyst exhibits a maximum power density of 438.3 mW cm−2. This improved ORR activity is attributed to synergistic electronic effects and modified surface strain within the PtAuPd nanoalloy.
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Corrosion Communications
·
2025
·
IF 9.5
Zhoufeng Xu,Renzhi Luo,Tao Liu,Chongdou Yang,Tianyu Zhao,Jie Qiu
Molten chloride salt is an ideal heat transfer and storage medium for solar power generation systems. However, the strong corrosion of high-temperature molten salts on metal materials is the main problem limiting its applications in solar thermal power systems. In this work, corrosion behavior of stainless steel 316L in molten chloride salt at 700°C was examined and characterized. Results show that the stability of surface oxide of stainless steel 316L was dramatically jeopardized in high-temperature chloride molten salt. When the oxide film was dissolved, stainless steel 316L corrodes primarily through the selective dissolution of Cr with intergranular corrosion features. Moreover, O impurity in the chloride molten salt enter the alloy matrix through grain boundary and form intergranular oxide of (Fe,Cr,Ni) 3 O 4 spinel, accelerating the intergranular corrosion crack in molten chloride salts.
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ENERGY & FUELS
·
2025
·
IF 5.3
Hui Yang,Libo Han,Haiquan Su,Lili Wan,Yue Su
Dry reforming of methane (DRM) reaction has attracted much attention due to its important implications for the environment and energy. The nonprecious metallic nickel is a promising active metal in DRM catalysts because of its low price and high activity. However, nickel-based catalysts are prone to deactivation due to sintering and carbon deposition, which is the main factor limiting the industrial application of the DRM reaction. Herein, a highly stable DRM catalyst has been developed, which was a highly dispersed nickel-based catalyst Ni/N-C-DS (Ni supported on N–C support prepared by the double-solvent (DS) method), prepared by impregnating Ni2+ into the cavities of ZIF-8 using the double-solvent method (DS), followed by a one-step carbonization process. The results showed that the Ni/N-C-DS catalyst exhibited smaller metallic Ni nanoparticles, more dispersed Ni species, and richer pore structures. At a reaction temperature of 800 °C, the Ni/N-C-DS catalyst exhibited satisfactory DRM catalytic activity and stability, with CH4 and CO2 conversion rates reaching 82 and 85%, respectively. The H2/CO ratio approached 1, and no deactivation was observed during 300 h of continuous operation. A thorough study of the catalyst’s structure–activity relationship revealed that the high dispersion of Ni0 in the Ni/N-C-DS catalyst was the main source of high activity for the DRM reaction, while the high stability in the later stage (80–300 h) of the DRM reaction was mainly attributed to the synergistic effect between the in situ reduced Ni0 and the initially highly dispersed Ni0.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
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IF 3.9
Kaijun Liang,Jiajie Song,Minjun Kuang,Xiaoping Wu,Songbai Qiu,Qian Zhang,Tiejun Wang
The direct upgrading of biomass-derived aqueous ethanol to produce long-chain alcohols is important due to the growing demand for value-added sustainable fine chemicals and liquid fuel. In this work, a bimetallic Ni@C catalyst was synthesized by using a facile sol–gel method with bismuth (Bi) doping. The bimetallic NiBi-1/1@C catalyst exhibited distinct advantages in forming C6+ high-carbon alcohols and inhibiting C1 byproducts compared with the monometallic Ni@C. Optimally, an ethanol conversion up to 87.2% with a C6+ alcohol selectivity of 79.9% was demonstrated and the C1 byproduct selectivity was suppressed to 10.1%. The doping of Bi modulates the adsorption of aldehydes on the Ni site, which inhibits the C–C cleavage side reaction, thus realizing the direct and efficient conversion of an ethanol solution to C6+ alcohols. These findings provide a promising strategy for directly converting biomass-derived ethanol to sustainable high-carbon alcohols and biofuel precursors.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lin Ma,Hao Wu,Daheng Liu,Pengjie Zhang,Wei Sun,Xiaohui Liang,Jiewu Cui,Yu Zhang,Dianqing Yu,Fuchun Liu,En-Hou Han
It remains a challenge to develop electromagnetic wave absorbers with wide effective absorbing bandwidth (EAB). In this work, one-dimensional (1D) cobalt-based metal-organic framework (MOF)-derived composites were exploited on whose surfaces are decorated with nanoparticles. The EAB can reach up to 6.7 GHz with the corresponding matching thickness only 2.2 mm, which is far greater than those of most similar composites. The unique 1D rod microstructures possess a large length-to-diameter ratio and can provide a longer conductive path in a relatively small volume, which can reduce the length of electron transmission paths, and thus improve the overall conductivity. The composites contain a large number of cobalt/carbon heterogeneous interfaces, which can enhance the interface polarization phenomenon. Additionally, the impedance matching can be controlled in balance due to the double-component feature of the composites. The successful preparation of the cobalt-based MOF-derived composites with an ultra-wide EAB can significantly improve the upper limit of EAB of similar composites.
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JOURNAL OF CATALYSIS
·
2026
·
IF 6
Xiangwei Ren,Yue Zhang,Shuzhen Lyu,Li Wang,Ruichen Liu,Guozhu Liu,Rongrong Zhang
Oxidation of methylene compounds remains a critical challenge due to the difficult activation of C–H bond. Herein, Ce–Al composite oxide was prepared and employed for oxidation of 2-alkyl-anthrone and anthracene to corresponding anthraquinone (AQ) which is used widely in the H 2 O 2 production by the anthraquinone process and fine chemical industries, with air at mild conditions. Characterization results show that incorporation of Ce, existing partially in CeAlO 3 phase, results in the generation of oxygen vacancies and enhancement of reducibility. The optimal Ce–Al composite oxide (10%CeAl) exhibits superior performance in oxidation of 2-alkyl-anthrone and anthracene to AQ. The conversion of 100% could be achieved for 2-alkyl-anthrone to AQ at reaction time of 8 h and for 2-alkyl-anthracene to AQ at 15 h over 10%CeAl, with 100% selectivity. In-situ electron paramagnetic resonance measurements and DFT calculations reveal that the Ce–O–Al structure in CeAlO 3 phase promotes the formation of carbon-centered radical R • through altering the C–H cleavage mechanism from hydrogen atom transfer to proton-coupled electron transfer (PCET), and superoxide anion radicals (O 2 •− ) formed on oxygen vacancies promote oxidation of R • .
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International Journal of Minerals Metallurgy and Materials
·
2026
·Vol. 33
·期 2
·737-748
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IF 8.8
Guo Donghui,Jin Runze,Xu Baosheng
The high-temperature interaction of nanostructured Lu 2 Si 2 O 7 environmental barrier coatings (EBCs) with calcium–magnesium–aluminosilicate (CMAS) was investigated at 1400°C for 1, 10, 25, and 50 h to evaluate the coating’s resistance to CMAS corrosion. The results indicate a phase transformation over time, transitioning from Ca 2 Lu 8 (SiO 4 ) 6 O 2 apatite and Lu 2 Si 2 O 7 to solely Lu 2 Si 2 O 7 . The interaction of the Lu 2 Si 2 O 7 coating with the CMAS melts was divided into three stages based on the corrosion reaction behavior. The delamination cracks were distributed throughout the interface between the Si bond layer and Lu 2 Si 2 O 7 layer after corroded at 1400°C for 50 h, signifying coating failure. In addition, the influence of monosilicates, disilicates, and corrosion duration on the recession layer thickness was analyzed by comparing previous reports on RE 2 SiO 5 /RE 2 Si 2 O 7 coatings (RE = Gd, Yb, Lu, Er). Furthermore, the variation in the thermally grown oxide layer thickness in CMAS-corroded Lu 2 Si 2 O 7 coatings was systematically investigated.
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Journal of Energy Storage
·
2026
·
IF 9.8
Yupeng Li,Gengwei Li,Xiping Lei,Ting Yu
NiSe₂ is considered a promising electrode material due to its high theoretical specific capacity and favorable redox activity; however, its practical application is limited by poor electrical conductivity and structural instability during cycling. To overcome these limitations, a sacrificial template method was employed using Ni@C/MoS₂ as the precursor to successfully construct a series of NiSe₂@C/MoS₂ composites with varying selenization degrees. The resulting hierarchical structure exhibits excellent stability and efficiency: the carbon framework significantly enhances electron transport, while MoS₂ not only contributes additional pseudocapacitance but also synergistically improves ion diffusion efficiency. Furthermore, selenium doping effectively modulates the electronic structure and active sites, leading to optimized electrochemical performance. Systematic investigations reveal that when 2 mmol of selenium source is added, the obtained NiSe 2 @C/MoS₂-2 (denoted as NSC/MoS₂-2) electrode achieves an exceptional specific capacitance of 562.3C g −1 (1405.8 F g −1 ) at 1 A g −1 and maintains 82.7 % capacitance retention at 10 A g −1 . An asymmetric supercapacitor assembled with NSC/MoS₂-2 as the positive electrode and activated carbon as the negative electrode delivers a high energy density of 36.37 Wh/kg at a power density of 700 W/kg. This work innovatively demonstrates that precise control of the selenization degree enables the controllable growth of hierarchical NiSe₂ nanoflowers on an MOF-derived carbon framework while establishing strongly coupled heterogeneous interfaces with layered MoS₂. This integrated design markedly improves the structural stability and electrical conductivity of NiSe₂, while fully harnessing the multiple synergistic effects among NiSe₂, MoS₂, and the carbon matrix, thereby delivering comprehensive breakthroughs in specific capacity, superior rate capability, and long-term cycling stability. The strategy offers a new paradigm for the rational construction of high-performance transition metal selenide-based supercapacitor electrodes.
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BIOSENSORS & BIOELECTRONICS
·
2026
·
IF 10.5
Han Pan,Murilege Chao,Miao He,Jinhua Chen,Feifan Yin,Yongliang Cai,Wenting Cheng,Zhongyun Wang,Yang Xiang
A single-base mutation in the CHCHD10 gene can impair thermogenic responses, and inhibit the efficient conversion of white adipose tissue to beige adipose tissue. However, achieving high-fidelity detection of such low-abundance single nucleotide polymorphisms (SNPs) within complex biological matrices remains a critical technological challenge. This study developed a novel method for detecting a single-base mutation in CHCHD1 0 by integrating the specific recognition of flap endonuclease 1 (FEN1) with the cascade amplification of an entropy-driven circuit reaction (EDCR), supplemented with magnetic separation to suppress background interference. In this process, the mutant target (MT) hybridizes with the upstream probe (UP) and a hairpin downstream probe (DP) to form a specific three-base overlapping structure. FEN1 recognizes and cleaves this structure, releasing a cleavage sequence (CS). Following magnetic purification, the CS activates the EDCR, enabling dual-signal amplification. The hairpin DP design effectively conceals the CS, significantly reducing background noise. The method achieves a detection limit of 0.23 pM, discriminates mutation abundances as low as 0.01% in mixed DNA samples, and demonstrates robust performance in complex matrices such as human serum and high-background genomic DNA. This work provides an innovative and reliable methodological tool for the detection of low-abundance point mutations in complex samples.
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