CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Jianan Huang,Xianlin He,Ruqi Zhang,Zixuan Ding,Yanting Song,Haimei Yang
Accurate identification of multiple teas based on the difference in their contents and species of metal ions is vital in food inspection and public health. However, achieving accurate sensing from one material with various transduction signals and excellent anti-interference remains a challenge. Herein, a four-channel sensing platform was constructed by combining with four water-soluble InP/ZnS QDs with independent emission. The fluorescence intensities of the four water-soluble InP/ZnS QDs change in different degrees owing to the synergistic coordinative effect between metal ions and ligands. Interestingly, the multi-channel sensing platform allows the qualitative performance of metal ions with excellent anti-interference, high sensitivity, and high accuracy in binary and ternary mixtures. Moreover, the multi-channel fluorescent array exhibited a universality-powerful capability for identifying five teas with satisfactory results. The universal application for detecting Cr 6+ , Hg 2+ , and Cu 2+ in various tea drinks was demonstrated with excellent recovery, indicating a promising potential application in food safety.
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Surfaces and Interfaces
·
2026
·
IF 6
Bowen Hua,Shuai Han,Bin Liu,Feng Liu
Polymer-based composites typically suffer from a trade-off between thermal expansion and thermal conductivity due to the lack of continuous functional pathways. Herein, we propose a topological design strategy where Cu₂P₂O₇ is transformed from a passive filler into an active, tunable negative thermal expansion (NTE) skeleton to resolve this conflict. The scientific core of this work lies in regulating the sintering-mediated evolution of the porous skeleton to tailor the structure-property relationships. By precisely controlling sintering temperatures (1073 K–1373 K), we modulated the skeletal pore topology from a "particle-edge fusion" state to a highly densified network. This continuous NTE framework exerts a strong elastic constraint on the epoxy matrix, effectively suppressing its anharmonic vibration-induced expansion, while simultaneously eliminating phonon scattering at resin-particle interfaces to minimize interfacial thermal resistance. Consequently, the optimized CPO-1073/epoxy composite achieves a rare combination of near-zero thermal expansion (0.85 ppm K⁻¹) over a wide window (240–340 K) and high thermal conductivity (2.3 W m⁻¹ K⁻¹, seven times that of pure epoxy). Ideally, the low-temperature sintered skeleton preserves a high specific surface area for mechanical interlocking, ensuring robust structural integrity (∼80 MPa) unlike the brittle failure seen in dense ceramic networks. This work elucidates how preform-based microstructure engineering can independently tune thermal and mechanical functionalities, offering a generalizable principle for advanced composite design.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Junsheng Guo,Wenzong Xu,Tao Yan,Jiayan Zhang,Xiaoyu Guo,Lingfeng Wang,Julan Liu
Polyvinyl alcohol (PVA) is a promising biodegradable polymer, but its widespread application is critically constrained by inherent flammability, limited UV resistance, and the mechanical compromises often incurred by conventional flame-retardant modifications. To address these challenges, a novel bio-based phosphorus‑nitrogen synergistic flame retardant (DPP) was developed from pyridoxal phosphate via a facile Schiff base condensation and P H addition route. This well-designed DPP was efficiently incorporated into PVA via a green melt blending process, yielding composites that achieved a simultaneous enhancement of multiple properties. With a 10 wt% DPP loading, the composite exhibited exceptional flame retardancy, achieving a limiting oxygen index (LOI) of 30.5%, a UL-94 V-0 rating, along with a 63.2% reduction in its peak heat release rate (PHRR) and a 32.7% decrease in total heat release (THR). Additionally, it provided outstanding UV shielding performance, with an ultraviolet protection factor (UPF) of 362 and over 99.7% blocking of both UVA and UVB radiation. Impressively, its tensile strength was enhanced to 25.2 MPa, thus overcoming the common performance trade-off. This multifunctionality stems from DPP's well-orchestrated molecular design: it operates through a vapor- and condensed-phase synergistic flame-retardant mechanism and intrinsic UV absorption, while its strong interfacial hydrogen bonding with PVA constructs a physical crosslinking network, underpinning the concurrent mechanical enhancement. This work presents a strategy for fabricating sustainable, high-performance, multifunctional PVA materials. The PVA/DPP composites obtained via this strategy show promising potential for advanced applications such as outdoor protection and safe electronics packaging.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yudong Wang,Junhui He,Haixin Li,Qiuxiang Yang,Lin Peng,Shounian Cheng,Yu Han,Yang Jie,Xia Cao
In this study, cadmium-free InP/ZnSe core–shell quantum dots (QDs) were synthesized using the hot-injection method, with the measured barrier height of the PN junction being approximately 0.441 eV. The core–shell structure significantly improved the photoluminescence quantum yield (PLQY) compared to that of bare InP QDs, with enhanced optical properties and stability due to effective lattice matching between InP and ZnSe, reducing interfacial defects. These QDs were integrated into a hybrid energy-harvesting device by combining a triboelectric nanogenerator (TENG) and a photovoltaic (PV) thin film. The TENG, based on a PMMA–QDs composite film, achieved a high output power density of 191.13 μW/cm2 under 3 Hz mechanical excitation, while the PV device exhibited a light-switching ratio as high as 73.5, demonstrating excellent photoresponsivity. Additionally, a smart security lock system was developed, utilizing the TENG’s personal information recognition capability to authorize access based on a friction-generated electrical signal, with an integrated alarm system to detect unauthorized code acquisition via light-excited fluorescent substances. This dual-response energy system offers a promising approach for efficient and reliable energy harvesting with potential applications in sustainable electronics and self-powered IoT devices.
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高影响因子
Journal of Materials Chemistry A
·
2025
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IF 9.5
Zhongming Hao,Yansen Zhang,Shuya Cui,Xinghong Duo,Leichao Meng,Shenghua Ma
Hydrogen energy is a clean, renewable energy source, yet current production methods suffer from low efficiency. Titanium dioxide (TiO2)-based photocatalysis offers a promising approach, but performance is limited by weak visible light absorption and high electron–hole recombination rates. This study improved TiO2's photocatalytic efficiency through co-doping with aluminum (Al), zinc (Zn), and cerium (Ce). Materials were synthesized via the sol–gel method and characterized using XRD, SEM, XPS, and other techniques. The doped TiO2 exhibited a bandgap reduction from 3.0 eV to 1.6 eV, resulting in significantly enhanced visible light absorption. The absorption edge wavelength shifted from 412 nm to 766 nm, enabling more efficient use of solar energy. Electrochemical analyses revealed a substantial decrease in charge transfer resistance and a 1567% increase in photocurrent density. Specific surface area increased by 20%, contributing to better catalytic performance. Hydrogen production tests in ethanol solutions showed a remarkable improvement, with the doped TiO2 producing hydrogen at a rate of 5781.33 μmol (g−1 h−1), far surpassing the 0.011 μmol (g−1 h−1) of undoped TiO2. Mechanistic studies using EPR, FTIR, and radiotracer techniques confirmed enhanced charge carrier separation and validated the proposed pathways. These findings demonstrate that co-doping TiO2 with Al, Zn, and Ce is a viable method for significantly improving photocatalytic hydrogen production, paving the way for more sustainable and efficient hydrogen energy technologies.
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JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
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2025
·
IF 3
Zhihui Xu,Jing Li,Xiaoling Peng,Shan Tao,Jingcai Xu,Bo Hong,Xinqing Wang
The present study utilized Y 3 Fe 5 O 12 (YIG) ferrites as a coating on Fe-Si-B-Cu-Zr nanocrystalline magnetic powder to fabricate soft magnetic composites (SMCs). The influence of YIG content and annealing temperature on the magnetic properties of Fe-Si-B-Cu-Zr/YIG SMCs was investigated. It was revealed that an appropriate amount of YIG in the composite could enhance the permeability and its resistance to DC bias, while reducing eddy current loss. The results demonstrated that the Fe-Si-B-Cu-Zr/YIG SMCs coated with 1.0 wt% YIG exhibited good comprehensive magnetic properties, with a permeability of 33.8, 86.1 % retention under a DC bias of 100 Oe, and a 53.1 % reduction in eddy current loss to 13.86 mW/cm 3 at 500 kHz and 10 mT. Besides, the optimal annealing temperature for achieving decrease core loss and maximum permeability was determined to be 500℃ for the Fe-Si-B-Cu-Zr/YIG SMCs. This study demonstrates a promising coating material to enhance the high-frequency magnetic properties of nanocrystalline soft magnetic composite.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Hui Min Hu,Yang Li,Zhong Li,Lina Wang,Zongzhen Li,Ruoxuan Li,Hongxia Li,Xianguo Liu,Fuqi Zhao,Xuefeng Zhang
Soft magnetic composites (SMCs) have attracted significant attention as key magnetic materials with the ongoing trend toward high-frequency operation in electronic devices. However, conventional approaches to tailoring the magnetic properties of SMCs rely excessively on coating processes, highlighting an urgent need to develop new control strategies. In this work, the influences of silicone resin content and annealing temperature on the microstructure and soft magnetic properties of FeSiBCuNb nanocrystalline soft magnetic composites (NSMCs) were systematically investigated. During annealing, the thermal decomposition of silicone resin generates a SiO 2 insulating layer. Concurrently, part of the oxygen released from the decomposition of both the silicone resin and zinc stearate reacts with Fe in the FeSiBCuNb powder to form a uniform Fe x O y insulating layer, while the remaining oxygen reacts with Si to generate SiO 2- y . The dual-layer SiO 2 /Fe x O y insulating structure effectively suppresses magnetic losses. Moreover, annealing induces the precipitation of the α-Fe(Si) phase from the amorphous matrix, and the volume fraction and size of the α-Fe(Si) phase increase with increasing the annealing temperature, whereas excessive grain coarsening leads to the deterioration of magnetic properties. The NSMC with a silicone resin content of 1.5 wt% annealed at 450 °C gets remarkable comprehensive magnetic properties with a high effective permeability ( μₑ ) of 37.76, excellent frequency stability up to 1 MHz, and a DC bias performance of 51.82 % at 100 Oe. This work provides valuable insights for the development and application of novel high-performance SMCs by optimizing the coating process and tailoring the nanocrystalline structure.
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Laser & Photonics Reviews
·
2026
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IF 10
Zhipeng Xu,Haoran Chen,Yue Liu,Xiang Zhou,Dechao Yu,Xiaobin Xie,Chunchao Hou,Bohua Dong,Lixin Cao,Chenghui Xia
Near-infrared-emitting copper-based I-III-VI quantum dots (QDs) hold significant promise for photonics and bioapplications, yet their broad photoluminescence (PL) emission severely limits color purity and device efficiency. Herein, we report a hierarchically staged synthesis that decouples and sequentially suppresses defect- and phonon-induced broadening. Starting with Zn-poor CuInSe 2 QDs via cation exchange, we introduce Zn 2+ alloying to passivate cation vacancies and homogenize composition, forming a defect-minimized core. Subsequent epitaxial overcoating with a thick ZnS shell strongly localizes excitons, evidenced by suppressed thermal quenching and dominant coupling to a higher-order longitudinal optical ( LO ) phonon mode of ZnS ( E LO ≈ 141 meV). This shifts recombination from defect-assisted to near-band-edge emission, yielding CuInZnSe/ZnS QDs with an ultranarrow linewidth of 111 meV, high PL quantum yield of 73%, and minimal Stokes shift of 42 meV at 977 nm. When integrated into luminescent solar concentrators, these QDs enable an optical efficiency of 8.81% and a power conversion efficiency of 2.79%, underscoring their practical utility. Beyond reporting materials, this work provides profound insights into the interplay of exciton confinement and defect engineering, establishing a general and instructive strategy for achieving high color purity in multinary QDs.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 3
·192
·
IF 2.8
Ge Shaofan,Yang Yujie,Ding Hongyu,Geng Zhihao,Hu Tan
Magnetic loss is a key factor limiting the application of nanocrystalline soft magnetic composite materials (n-SMCs) in high-frequency environments, and insulative coating and annealing treatment are important methods to reduce magnetic loss. In this study, a nano-La₂O₃ insulative coating was applied to the surface of FeSiBNbCu nanocrystalline magnetic powder via physical grinding combined with ultrasonic vibration. The effects of nano-La₂O₃ coating content (0–1 wt%) and annealing temperature (455–530 ℃) on the soft magnetic properties of the magnetic powder core were systematically investigated. The results showed that the nano-La₂O₃ coating could significantly improve the insulative performance between magnetic powders and effectively reduce the P e of n-SMCs. With the increase of nano-La₂O₃ content, the P e showed a trend of first decreasing and then increasing, reaching the lowest at 0.75 wt%. The P e decreases from 193.43 mW/cm 3 (with 0.0 wt% La₂O₃) to 142.537 mW/cm 3 (with 0.75 wt% La₂O₃ at f = 1 MHz), representing a reduction of 26.3%. Meanwhile, by optimizing the annealing process, the residual internal stress in the magnetic powder core induced during compaction is effectively relieved, leading to a significant decrease in hysteresis loss. As the annealing temperature increases, the hysteresis loss of the magnetic powder core reaches its minimum at 505 °C. When the nano-La₂O₃ content was 0.75 wt% and the annealing temperature was 505 ℃, the prepared nanocrystalline magnetic powder core exhibited optimal soft magnetic properties: a stable effective permeability (22.47) and the lowest total loss (230.4 mW/cm 3 at f = 1 MHz, B m = 20 mT), which was 22.89% lower than that of the untreated sample. This study provides a new process scheme for the development of high-performance low-loss n-SMCs.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Haorui Dong,Haiyan Zhao,Tongtong Xuan,Wenhao Bai,Tianyu Lin,Yixin Cai,Rong-Jun Xie
Lead halide perovskite nanocrystals (NCs) have been the star material in lighting and displays owing to their excellent photoelectrical properties, but they have not simultaneously realized high photoluminescence quantum yield (PLQY) and high stability. To solve this problem, we propose a perovskite/linear low-density polyethylene (perovskite/LLDPE) core/shell NC by the synergistic role of the pressure effect and steric effect. Green CsPbBr3/LLDPE core/shell NCs with near-unity PLQY and nonblinking behavior were synthesized through an in situ hot-injection process. The mechanism of the improved photoluminescence (PL) properties is the enhanced pressure effect resulting in increased radiative recombination and interaction between the ligand and perovskite crystals, as confirmed by the PL spectra and finite element calculations. Meanwhile, the NCs show high stability under ambient conditions (with a PLQY of 92.5% after 166 days) and against 365 nm UV light (maintaining 61.74% of the initial PL intensity after continuous radiation for 1000 min). This strategy also works well in the blue and red perovskite/LLDPE NCs and red InP/ZnSeS/ZnS/LLDPE NCs. Finally, white-emitting Mini-LEDs were fabricated by combining the green CsPbBr3/LLDPE and red CsPbBr1.2I1.8/LLDPE core/shell NCs with blue Mini-LED chips. The white-emitting Mini-LEDs exhibit super wide color gamut (∼129% of the National Television Standards Committee or 97% of the Rec. 2020 standards).
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CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Wanjiao Li,Jing Li,Hui Li,Feng Hu,Jingcai Xu,Bo Hong,Yunxiong Zeng,Xinqing Wang,Hongliang Ge,Xiaoling Peng
FeSiCr soft magnetic composites (SMCs) with yttrium iron garnet (YIG) coating layer were studied in this work. The YIG with nano size was synthesized by reverse co-precipitation method, which was coated on FeSiCr powders with different YIG contents. The effect of the annealing temperature on the FeSiCr/YIG SMCs was also investigated. It was found that a moderate amount of YIG ferrite could form a thin and uniform layer, resulting in significant optimizations in core loss, permeability, and DC bias characteristics. The results show that the FeSiCr/YIG SMCs with 0.75 wt% YIG exhibit the best magnetic performance ( P cv = 131.34 mW/cm 3 , μ e = 44.5 at 10 mT and 500 kHz). In addition, it was demonstrated that the FeSiCr/YIG SMCs with 0.75 wt% YIG presented the lowest core loss and largest permeability at the optimal annealing temperature of 500 °C. This study provides a new kind of FeSiCr/YIG SMCs which have good prospects to be used in high-frequency fields.
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Materials
·
2023
·Vol. 16
·期 10
·3774
·
IF 3.4
Jingxiang Chen,Cheng Fu,Junye Li,Weiyu Tang,Xinglong Gao,Jingzhi Zhang
Micro and sub-micro-spherical copper powder slurries were elaborately prepared to fabricate different types of porous coating surfaces. These surfaces were further treated with low surface energy modification to obtain the superhydrophobic and slippery capacity. The surface wettability and chemical component were measured. The results showed that both the micro and sub-micro porous coating layer greatly increased the water-repellence capability of the substrate compared with the bare copper plate. Notably, the PFDTES-fluorinated coating surfaces yielded superhydrophobic ability against water under 0 °C with a contact angle of ~150° and a contact angle of hysteresis of ~7°. The contact angle results showed that the water repellency of the coating surface deteriorated with decreasing temperature from 10 °C to −20 °C, and the reason was probably recognized as the vapor condensation in the sub-cooled porous layer. The anti-icing test showed that the ice adhesion strengths of the micro and sub-micro-coated surfaces were 38.5 kPa and 30.2 kPa, producing a 62.8% and 72.7% decrease compared to the bare plate. The PFDTES-fluorinated and slippery liquid-infused porous coating surfaces both produced ultra-low ice adhesion strengths of 11.5–15.7 kPa compared with the other non-treated surfaces, which showed prominent properties for anti-icing and deicing requirement of the metallic surface.Keywords:superhydrophobic surface;anti-icing;porous coating;wettability
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