CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Jihui Yao,Lijuan Su,Lipeng Guo,Xing Wu,Haibo Zhu
N -ethylcarbazole, as a liquid organic hydrogen carrier, has shown great promise in the field of hydrogen storage technology. The development of efficient and stable catalyst for producing H 2 through N -ethylcarbazole dehydrogenation is crucial for its practical application. In this study, a series of mesoporous Al 2 O 3 -supported Pt catalysts with K modification were developed for N -ethylcarbazole dehydrogenation. These catalysts were characterization using various techniques including XRD, N 2 adsorption–desorption, TEM, 27 Al MAS NMR, XPS, NH 3 -TPD, H 2 -TPR, CO-FTIR, and Py-IR, providing detailed structural information to elucidate the structure–activity relationship. Mesoporous Al 2 O 3 was found to possess significant amounts of coordinatively unsaturated pentacoordinate Al 3+ , which greatly promotes the dispersion of Pt species for the formation of small Pt particles. The addition of K was observed to modulate the electronic structure of Pt, reduce the acidity of the catalysts, and inhibit the sintering of Pt. These synergetic effects led to Pt 3.0 /K 3.0 -Al 2 O 3 -m achieving remarkable performance in dodecahydro- N -ethylcarbazole dehydrogenation at 180 °C and 101 kPa, delivering a dodecahydro- N -ethylcarbazole conversion of 100 %, H 2 release amount of 5.63 wt% and dehydrogenation efficiency of 97.10 %. Additionally, this catalyst demonstrated high efficiency in the dehydrogenation of dodecahydro- N -propylcarbazole, octahydro-2-methylindole, and octahydro-1,2-dimethylindole, achieving dehydrogenation efficiencies of 99.60 %, 100 % and 100 %, respectively. These findings provide valuable knowledge for the rational design of efficient metal-based catalysts for liquid organic hydrogen carriers in hydrogen storage systems.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Xueli Zuo,Feida Chen,Shujie Wu,Wei Zheng,Yuan Liu,Jun Li,Jifeng Zhang,Xiaobin Tang
Simultaneously optimizing electrical and thermal transport properties remains a major challenge for thermoelectric materials. In this work, high-entropy secondary phases (HE2P) were introduced into a Cu-doped PbTe matrix to improve the thermoelectric performance of n-type PbTe. Carbon-coated HE2P particles were incorporated into the PbTe matrix through vacuum melting and fast hot-pressing, resulting in a hierarchical microstructure with refined grains, heterointerfaces, and defect structures. The introduced HE2P effectively suppresses lattice thermal conductivity through enhanced phonon scattering induced by interfaces, lattice distortion, and mass fluctuation. Meanwhile, the heterogeneous interfaces introduced by the carbon-coated HE2P particles may also influence carrier transport behavior. As a result, the composite with 7% HE2P achieves a low lattice thermal conductivity of 0.39 W m −1 K −1 at 838 K and a peak ZT value of 1.38, together with an average ZT of 1.01 over 300–850 K. These results suggest that incorporating high-entropy secondary phases provides a feasible approach for improving the thermoelectric performance of PbTe-based materials.
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FOOD CONTROL
·
2026
·
IF 7
Wen Xie,Xiaoxiao Guo,Daohang Xing,Linjuan Huang,Li Zou,Cheng Fan,Qingqing Liu,Yu Lu,Xiaoqin Wang,Zhongfu Wang
Dairy quality and safety are critical in food supervision, with goat milk adulteration posing a major challenge. This study developed a sensitive HPLC-fluorescence method using N-glycolylneuraminic acid (Neu5Gc) as a specific marker to quantify bovine milk adulteration in goat milk. Analysis of pure goat milk samples from six breeds, four geographical origins, and different lactation seasons revealed that, despite variations attributed to these factors, Neu5Gc levels in goat milk were consistently more than 50-fold higher than those in bovine milk. Adulteration proportionally reduces Neu5Gc concentration. Linear regression models for water and bovine milk adulteration achieved R 2 values of 0.9857 and 0.9624, respectively, with mean absolute errors ≤4.0%. The method successfully identified commercial goat milk products adulterated with high proportions of bovine milk. Overall, this work provides a reliable and novel strategy for the authentication and quantitative adulteration analysis of goat milk, offering technical support for the supervision of dairy quality and safety.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Kai Liu,Ziling Liu,Tuanhui Li,Wasim Afzal Muhammad,Xue Liu,Dongbin Dang,Yan Bai
Developing highly efficient single-atom catalysts (SACs) with optimal active-site utilization remains challenging. In this study, a hollow macroporous-mesoporous catalyst composed of iron single atoms supported on nitrogen-doped carbon (Fe/NC) was synthesized using silica microspheres as a sacrificial template and dopamine hydrochloride as a bifunctional C/N source and iron-anchoring ligand, and applied to the CO 2 cycloaddition reaction. According to the experimental results, the Fe/NC catalyst demonstrates exceptional performance in the cycloaddition reaction of styrene oxide with CO 2 , achieving a high yield of 97.45 ± 0.33% (turnover frequency (TOF) = 38.19 h −1 ), despite having an extremely low iron loading of only 1.36 ± 0.01 wt%. This is attributed not only to the superior intrinsic catalytic activity of the Fe N 4 active sites but also to the hollow mesoporous structure with a high specific surface area, which provides stable metal anchoring sites to effectively suppress iron atom aggregation, promotes continuous release of substrates and CO 2 , enhances product diffusion, and thereby improves catalytic efficiency. In addition, the Fe/NC catalyst demonstrates excellent cycling stability, maintaining a high conversion efficiency of 93.26 ± 0.52% after five consecutive recycling tests while preserving its structural integrity. Moreover, the Fe/NC catalyst exhibits broad substrate compatibility. This work provides a theoretical basis for synthesizing porous C/N materials with single-atom loading to achieve efficient catalytic conversion of carbon dioxide Download: Download high-res image (139KB) Download: Download full-size image
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SENSORS AND ACTUATORS A-PHYSICAL
·
2026
·
IF 5.1
Qingyin Feng,Xueping Zhao,Zhuoya Zhang,Hai Zhang,Pucun Bai
A flexible γ-CuI/AZO p-n heterojunction UV photodetector was successfully fabricated on a PEN substrate. • Self-powered UV detection with R of 4 mA/W, D* of 2.62 × 10 11 Jones, and fast rise time and decay time (306/116 ms). • The heterojunction exhibits excellent mechanical durability, maintaining stable photoresponse after 500 bending cycles. Flexible ultraviolet (UV) photodetectors have broad application prospects in wearable electronics and low-power optoelectronic systems. In this work, a self-powered UV photodetector based on a γ-CuI/AZO p-n heterojunction was successfully fabricated on a flexible polyethylene naphthalate substrate. Both γ-CuI and AZO films exhibit high visible-light transmittance with optical bandgaps of 3.03 eV and 3.28 eV, respectively, rendering them suitable for UV detection. The device demonstrates distinct rectification behavior in the dark and a markedly enhanced photoresponse under 365 nm UV illumination, achieving stable self-powered operation at 0 V bias. Under a 0 V bias and an incident power density of 103.2 mW/cm 2 , the device demonstrates rise and decay times of 306 ms and 116 ms, respectively. At 33.4 mW/cm 2 , the device achieves a responsivity of 4 mA/W and a specific detectivity of 2.62 × 10 11 Jones, confirming its effective self-powered UV detection capability. Furthermore, cyclic bending tests under a fixed 5-mm radius curvature revealed that the device maintains distinguishable photoresponse after 500 bending cycles, demonstrating robust mechanical tolerance and reliable photodetection under fatigue deformation. This work provides a feasible route for the construction of flexible self-powered UV photodetectors based on p–n heterojunctions. Download: Download high-res image (157KB) Download: Download full-size image
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Guirong Duan,Jie Jiang,Yanqing Jiao,Jiaqi Wang,Xi Zhao,Ganceng Yang,Haijing Yan,Honggang Fu
Developing low-cost, corrosion-resistant catalytic electrodes for the oxygen evolution reaction (OER) is essential for efficient and durable hydrogen production via anion exchange membrane water electrolysis (AEMWE). Herein, we report a polydopamine (PDA)-coated Fe,Cr codoped NiS2 self-supporting electrode (PDA-Fe,Cr-NiS2@NF). The nitrogen-rich functional groups of PDA establish robust M-N coordination bonds with active metal centers, thereby suppressing metal dissolution during anodic reconstruction. In parallel, the conductive PDA layer regulates interfacial electron redistribution and optimizes the hydrogen-bond network of interfacial water, lowering the OER activation energy. Its conformal protective layer further enhances catalyst stability. The optimized electrode delivers an OER overpotential of only 247 mV at 1 A cm–2. When integrated as the anode with a PtNiC cathode in an AEMWE cell, the system reaches a current density of 1 A cm–2 at only 1.737 V at 70 °C and operates stably for 1000 h, with a voltage decay rate of only 0.1 mV h–1, an electrolysis efficiency of 71.96%, and an energy consumption of 4.157 kWh Nm3– H2. This work establishes a viable coordination-protection strategy for constructing durable, high-performance OER electrodes for industrial-scale water electrolysis.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 19
·1466
·
IF 3.2
Valabhoju Madhuker,Pothukanuri Nagaraju,Kathirvelu Velavan,Parne Saidi Reddy
Titanium-based metal–organic frameworks (Ti-BDC MOFs) were synthesized via a solvothermal route at different temperatures ranging from 110 to 170 °C using terephthalic acid as the organic linker. The synthesized samples were systematically characterized using X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV–Vis), Brunauer–Emmett–Teller (BET) surface area analysis, and thermogravimetric analysis (TGA) to investigate their structural, morphological, optical, and thermal properties. X-ray diffraction (XRD) studies revealed temperature-dependent variations in crystallinity and phase evolution, while FESEM analysis demonstrated significant morphological transformations with increasing synthesis temperature. EDX confirmed the presence of Ti, O, and C elements, validating the successful formation of the Ti-BDC framework. FTIR spectra verified the coordination between Ti metal centers and BDC linkers, whereas TGA indicated good thermal stability with framework integrity maintained up to approximately 280 °C. Ultraviolet–visible studies were employed to determine the optical band gap, and BET analysis revealed the microporous and hierarchical porous nature of the synthesized materials. Gas sensing characteristics toward n-butanol were evaluated under ambient conditions using the static liquid distribution method. Among all samples, the Ti-BDC MOF synthesized at 150 °C exhibited the best sensing performance toward 5 ppm n-butanol, showing superior response–recovery behavior, excellent selectivity, and long-term stability, with a limit of detection (LOD) of 2.66 ppm. The enhanced sensing performance is attributed to the optimized crystallinity, porous architecture, and abundant active adsorption sites that facilitate efficient gas diffusion and charge transfer processes. These findings demonstrate the potential of Ti-BDC MOFs as promising sensing materials for low-concentration n-butanol detection in environmental monitoring and workplace safety applications.
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LANGMUIR
·
2026
·Vol. 42
·期 30
·22067-22077
·
IF 4.4
He Fu,Zhou Jiahong,Guan Hongwei,Chen Yuejia,Li Zhuo,Xu Tiefu
Heterogeneous photo-Fenton technology is an efficient
advanced
oxidation process for the removal of organic pollutants in water.
This process accelerates the reduction of Fe 3+ to form
Fe 2+ by photoelectrons (e – ), thereby
enabling the sustained generation of reactive oxygen species (ROS)
for pollutant removal. In this study, a BiVO 4 /BiFeO 3 (BVO/BFO) n-p heterojunction catalyst was obtained via calcination
and wet chemical methods for tetracycline (TC) photo-Fenton removal.
The optimal ratio of BVO:BFO was 0.7:1, which can achieve 70.08% TC
degradation in 30 min ( k = 0.0147 min –1 ), markedly surpassing bare BFO and BVO, and retaining >70% efficiency
after ten cycles. The remarkable improvement of TC removal resulted
from efficient electron–hole (e – /h + ) pair separation by heterojunction in space to regenerate Fe 2+ for H 2 O 2 activation. Furthermore,
two distinct TC degradation pathways induced by h + and • OH were proposed, including dehydroxylation, demethylation,
deamidation, ring opening, and hydroxylation. This study provides
an insight into the acceleration of the Fe 3+ /Fe 2+ cycle and broadens the application of Fenton technology in the field
of environmental remediation.
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Advanced Agrochem
·
2026
·
IF 9.2
Kun Gao,Guantian Li,Wenjie Wang,Kecheng Li,Ronge Xing,Pengcheng Li,Yukun Qin
To explore the potential of utilizing renewable bioresources as sustainable alternatives to fossil-derived chemicals in green pesticide development, N -acetylglucosamine (NAG), the monomer of chitin, was employed as a starting scaffold for structural design, synthesis, and bioactivity evaluation. An efficient room-temperature synthetic route was developed, successfully yielding a series of novel thiourea glycoside conjugates. In vitro screening identified glycoside 3m as the most potent candidate against Fusarium oxysporum , achieving an inhibition rate of 94.4% at 200 μg/mL. Morphological and ultrastructural analyses via SEM and TEM showed that while glycoside 3m induced notable surface distortions in mycelia, the cell wall and membrane remained intact. Further untargeted metabolomics studies suggested that glycoside 3m primarily suppresses fungal growth by perturbing mitochondrial energy metabolic pathways, including glycolysis and the tricarboxylic acid cycle. Capitalizing on this bioenergetic vulnerability, a synergistic formulation combining glycoside 3m with hydrogen peroxide (H 2 O 2 ) was evaluated. The co-application of 100 μg/mL glycoside 3m with 0.3‰ H 2 O 2 achieved a 100.0% inhibition rate in vitro and a 52.9% protective efficacy in vivo . Overall, this study demonstrates the feasibility of developing high-efficiency fungicides from renewable marine biomass, offering a promising and sustainable approach for the management of agricultural pathogenic fungi.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Liquan Xiong,Ying Wang,Di Gao,Yueqi Song,Dongsheng Chen
Hydrogen energy is the core of future clean energy, and the study of hydrogen evolution reaction (HER) electrocatalytic mechanisms is essential for efficient production. The development of efficient and low-cost electrocatalysts is a key challenge in achieving ideal hydrogen generation. In this study, a Ni-BDC/TpPa-1 heterojunction material was prepared for the first time, which was converted into a derived heterojunction material (NiO@Ni/N-C) after high-temperature pyrolysis treatment, exhibiting excellent electrocatalytic activity in an alkaline solution. Without iR compensation, the overpotential of HER is only 83 mV at a current density of 10 mA·cm⁻². Compared with thermally decomposed Ni-BDC and TpPa-1 monomer, its electrocatalytic activity is improved by 158 and 435 mV, respectively, and it exhibits excellent stability over 100 h. The design of this novel material offers a new solution for enhancing the efficiency of transition-metal-based catalysts.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Manli Wang,Zhicheng Liu,Ming Hou,Xu Luo,Wenbin Yang,Hongjie Zhang,Xiaoming Song,Zhigang Shao
The irreversible degradation of platinum-based catalysts caused by strong sulfur dioxide (SO₂) adsorption poses a primary obstacle to the oxygen reduction reaction (ORR), limiting the practical application of proton exchange membrane fuel cells. Herein, we design and synthesize an anti-SO 2 poisoning Pt-based catalyst comprising Pt nanoparticles anchored on a single-atom Ni-N-HCNs support. The obtained catalyst (Pt/Ni-N-HCNs) exhibits exceptional tolerance to SO₂ poisoning, demonstrating a minimal negative shift of only 47.7 mV in the half-wave potential after contamination, compared to the 79.4 mV shift observed for commercial Pt/C. More importantly, Pt/Ni-N-HCNs catalyst demonstrates significantly enhanced ORR performance, with a mass activity of 0.58 A mg Pt −1 and a specific activity of 1.57 mA cm −2 , representing 1.2-fold and 2.7-fold improvements over commercial Pt/C, respectively. Density functional theory (DFT) calculations and XPS results reveal that the strong metal-support interaction (SMSI) induces the downshift of the d-band center of Pt, thereby weakening SO 2 adsorption and facilitating SO 2 removal. Furthermore, the Ni N site in Ni-N-HCNs support exhibits high activity for SO 2 oxidation, promoting the effective removal of SO 2 from adjacent Pt sites. Both effects synergistically enhance the resistance to SO 2 poisoning of the Pt/Ni-N-HCNs catalyst without sacrificing ORR performance. This work provides insights into the design of poison-resistant electrocatalysts and the development of energy conversion systems with high environmental applicability.
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Marine Drugs
·
2026
·Vol. 24
·期 2
·84
·
IF 5.7
Wenjie Wang,Kun Gao,Guantian Li,Zongji Wang,Kecheng Li,Song Liu,Huahua Yu,Ronge Xing
Type 2 diabetes mellitus (T2DM) is one of the most prevalent chronic metabolic diseases, and inhibition of α-glucosidase activity represents an effective therapeutic strategy. Chitin is the most abundant renewable polysaccharide in the ocean, with its monosaccharide beingN-acetylglucosamine (NAG). To evaluate the potential of NAG glycosides as novel α-glucosidase inhibitors, three common phenolic compounds were modified via NAG glycosylation. Their inhibitory activities were assessed at both the enzymatic and cellular levels. In addition, density functional theory (DFT), molecular dynamics (MD) simulations, and molecular docking analyses were employed to systematically investigate the effects of NAG glycosylation on enzyme inhibition and the underlying mechanisms. Compared with the parent phenolic compounds, NAG glycosides exhibited significantly enhanced α-glucosidase inhibitory activity, with NAG introduction markedly improving their binding affinity to α-glucosidase. Among them, glycoside3adisplayed the optimal inhibitory effect, comparable to acarbose, and at the cellular level, its activity at high concentrations was comparable to or slightly higher than that of metformin. Circular dichroism (CD) and MD analyses indicated that glycoside3aincreased the conformational flexibility of key residues and enhanced the structural looseness of the enzyme, thereby inhibiting its activity. NAG glycosides constitute a promising class of marine-derived α-glucosidase inhibitors, warranting further structural optimization and rational design to enhance their activity and selectivity.
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