ANALYTICAL LETTERS
·
2025
·
IF 1.8
Yongsheng Chang,Xiane Guo,Xiuzhen Ge,Xuexi Yu,Shujun Ma,Canyu Liu,Yunwei Lou,Tingmin Chang,Yun Zhang
Traditional immunoassays for Staphylococcus aureus (S. aureus) suffer from significant limitations, particularly owing to cross-reactivity with protein G-producing Streptococcus species. To address this issue, here is reported an innovative colorimetric strategy that depended on the unique binding characteristics of guinea pig immunoglobulin G (IgG) toward staphylococcal protein A (SPA), a highly expressed epitope on S. aureus. Unlike conventional monoclonal or polyclonal antibodies, guinea pig IgG exhibits high specificity for SPA, while demonstrating negligible affinity for protein G. The method also integrated horseradish peroxidase (HRP)-conjugated chicken anti-protein A immunoglobulin Y (IgY) (HRP–IgY) in a sandwich immunoassay format, enabling the catalytic oxidation of 3, 3′, 5, 5′-tetramethylbenzidine (TMB) and hydrogen peroxide. The signal intensity correlated linearly with S. aureus concentration over a dynamic range of 7.8 × 102 CFU/mL–1.0 × 105 CFU/mL, achieving a detection limit of 6.9 × 102 CFU/mL. Notably, the assay demonstrated exceptional specificity, with no cross-reactivity with other common foodborne pathogens. Compared with mainstream methods, this assay completed the entire analytical process within 90 min-shorter than polymerase chain reaction (PCR) and traditional enzyme-linked immunosorbent assay (ELISA). It eliminated the need for complex DNA extraction or strict anti-cross-contamination controls and maintained stable performance in real samples. This advantage outperforms PCR (often susceptible to matrix inhibitors) and ELISA (typically exhibits reduced sensitivity in complex matrices). By offering significant improvements over conventional techniques, this strategy holds great promise for enhancing the efficiency and reliability of S. aureus detection in practical applications.
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JOURNAL OF AEROSOL SCIENCE
·
2025
·
IF 2.9
Shuting Lei,Yiyang Zhang,Zhu Fang,Xing Jin,Shuiqing Li
Spray flame synthesis has proven to be a promising method for the high-throughput production of multi-component nanoparticles with atomic-level mixing. However, the fast dynamic of flame synthesis presents significant challenges in precisely controlling the morphology and crystalline phase of the particles, especially for multi components. In this paper, we conduct parametric flame synthesis experiments to identify key factors affecting nanoparticle morphology and crystal phase of Y-Al nanoparticles, focusing on the effects of Y/Al atomic ratio, flame temperature, and precursor volatility. The results indicate that the particle morphology depends on the composition, changing from aggregates with sintering necks to spherical particles without sintering necks and back to aggregates as the Al content increases. This trend is consistent with the change in particle melting points, which initially decrease and then rise again. Thus, the variation in melting point causes changes in sintering time, which in turn affect the particle morphology. The particle crystalline phase gradually deviates from the target phase as the Al content increases. Raising the adiabatic flame temperature from 1551 °C to 2340 °C accelerates the diffusion of Al atoms into the lattice, increasing the target phase proportion in the synthesized particles from 66 % to 99 %. By adjusting the amount of 2-ethylhexanoic acid (EHA) added, the volatility differences between the precursors can be modified. The largest discrepancy in precursor volatility is observed when EHA was added at a 50 % equivalence ratio, resulting in only 6 % of the target phase YAH (YAlO 3 , hexagonal type) in the particles. Increasing the EHA addition to 120 % equivalent results in better matching of precursor volatilities, which leads to a significant increase in the target YAH phase to 98 %, demonstrating the critical role of simultaneous evaporation of different component precursors.
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OPTICS LETTERS
·
2024
·Vol. 49
·期 18
·5224-5227
·
IF 3.1
Xuejiao Wang,Tianzhi Jiang,Lishuo Huang,Renguang Ye,Juan Wang,Youjie Hua,Jingtao Zhao,Gongxun Bai,Shilong Zhao,Junjie Zhang,Shiqing Xu
It is crucial to explore the intrinsic mechanisms that influence thermometric sensitivity. This study investigates the optical performance of materials with the same crystal structure but different phonon energies. Ln2O2S:Er3+/Yb3+ (Ln = La/Gd/Y) phosphors with similar morphology and particle sizes were prepared to systematically study the influence of different phonon energy matrices on optical properties. The intrinsic mechanism was elucidated through the matching degree between the energy gap and phonon energy, Judd–Ofelt (J–O) theory, and quantum dielectric theory. It was ultimately concluded that the combination of high phonon energy with a large Ω2 and a small Ω6 is beneficial for enhancing the sensitivity of temperature sensing materials.
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INORGANIC CHEMISTRY
·
2020
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IF 4.825
Peipei Dang,Dongjie Liu,Yi Wei,Guogang Li,Hongzhou Lian,Mengmeng Shang,Jun Lin
Phosphor-converted white-light-emitting diodes (pc-WLEDs) rely on combining a near-ultraviolet (n-UV) or blue chip with trichromatic and yellow-emitting phosphors. It is challenging to discover cyan-green-emitting (480–520 nm) phosphors for compensating the spectral gap and producing full-spectrum white light. In this work, we successfully discovered two unprecedented bright cyan-green emitting Rb3RV2O8 (R = Y, Lu) phosphors that gives emission bands centered at 500 nm upon 362 nm n-UV light excitation. Interestingly, the both self-activated compounds exhibit high internal quantum efficiencies (IQEs) of 71% for Rb3YV2O8 and 85% for Rb3LuV2O8, respectively. Moreover, controllable emission color can be successfully tuned from cyan-green to orange-red across the warm white light region by design strategy of VO43– → Eu3+ energy transfer. The thermal quenching of as-prepared phosphors could be effectively mitigated by this design strategy. Finally, the as-fabricated n-UV (λex = 370 nm) pumped phosphor-converted (pc) W-LED devices utilizing Rb3RV2O8 (R = Y, Lu) along with commercial phosphors demonstrate well-distributed warm white light with high color-rendering index (CRI) of 91.9 and 93.5, and a low correlated color temperature (CCT) of 5095 and 4946 K. It suggests that the both vanadate phosphors have potential applications in full-spectrum pc-WLEDs.
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Inorganic Chemistry Frontiers
·
2025
·Vol. 12
·期 23
·7566-7572
·
IF 6.4
Xiaodong Zhang,Bohui Xu,Deshuai Xiao,Xinyuan Zhang,Pifu Gong,Zheshuai Lin
Ultraviolet (UV) nonlinear optical (NLO) materials are critical for laser frequency conversion to extend wavelength ranges. Sulfates have emerged as a promising family of UV NLO materials, yet their NLO performance is constrained by the low optical anisotropy of the constituent [SO4]2− groups. In this study, we investigate the [C6H5SO3]− group, formed by substituting a ligand of the non-π-conjugated [SO4]2− unit with a π-conjugated benzene ring, and demonstrate that this group has a strong second harmonic generation (SHG) response and large birefringence. Leveraging this optimized structural unit, we successfully synthesize the first UV NLO benzenesulfonate, Y(C6H5SO3)3·9H2O. This compound exhibits enhanced UV optical properties, including a short cutoff edge of 280 nm, a relatively large SHG efficiency (0.8 × KDP), and a large birefringence of 0.16 at 1064 nm. This work not only presents Y(C6H5SO3)3·9H2O as a competitive UV NLO material, but also highlights the [C6H5SO3]− group as a highly effective structural motif for the future development of advanced UV NLO materials.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
He Junjie,He Guo,Liu Jing,Tao Jingchao
High-entropy ceramics exhibit great application potential as thermal barrier coating (TBC) materials. Herein, a series of novel high-entropy ceramics with RE 2 (Ce 0.2 Zr 0.2 Hf 0.2 Sn 0.2 Ti 0.2 ) 2 O 7 (RE 2 HE 2 O 7 , RE = Y, Ho, Er, or Yb) compositions were fabricated via a solid-state reaction. X-ray diffraction (XRD) and energy dispersive spectrometry (EDS) mapping analyses confirmed that RE 2 HE 2 O 7 formed a single defect fluorite structure with uniform elemental distribution. The thermophysical properties of the RE 2 HE 2 O 7 ceramics were investigated systematically. The results show that RE 2 HE 2 O 7 ceramics have excellent high-temperature phase stability, high thermal expansion coefficients (10.3–11.7 × 10 −6 K -1 , 1200 ℃), and low thermal conductivities (1.10-1.37 W m -1 K -1 , 25 ℃). In addition, RE 2 HE 2 O 7 ceramics have a high Vickers hardness (13.7–15.0 GPa) and relatively low fracture toughness (1.14-1.27 MPa m 0.5 ). The outstanding properties of the RE 2 HE 2 O 7 ceramics indicate that they could be candidates for the next generation of TBC materials.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Yuanhui Ma,Xi Liu,Minjie Yang,Ling Zha,Ying Huang,Dong Sun,Ruizhuo Ouyang,Yuqin Jiang,Yuqing Miao,Baolin Liu
MicroRNA-21 (miRNA-21) is a key oncogenic biomarker for early cancer diagnosis, yet its ultrasensitive detection in serum remains challenging due to limitations of conventional methods such as low sensitivity, high background, and poor biocompatibility. This study develops an electrochemical biosensor for femtomolar miRNA-21 detection by integrating Y-shaped DNA scaffold-enhanced catalytic hairpin assembly (Y-CHA) and Bi@PtAg nanoclusters (NCs). This design achieved an ultra-low detection limit, approximately 2.8-fold lower than that of the conventional sensor. The Y-CHA strategy spatially confines hairpin probes (H1 and H2) within a Y-DNA scaffold, significantly enhancing signal amplification and hybridization efficiency. Meanwhile, the core-shell structured Bi@PtAg NCs exhibit 2.1-fold higher H₂O₂ reduction catalytic activity than monometallic nanoparticles and demonstrate low cytotoxicity (approximately 80% cell viability at 200 μg·mL⁻¹). The biosensor achieves an ultra-low detection limit of 0.05 fM with a wide linear range from 1 fM to 100 pM (R² = 0.9982). It also displays excellent specificity in distinguishing miRNA-21 from mismatched and non-complementary RNAs, good stability (87.1% signal retention after 8 days), and reliable performance in serum samples (93.0–99.7% recovery, RSD < 5%). This study develops a versatile electrochemical biosensing platform for miRNA analysis and disease biomarker detection.
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ENERGY & FUELS
·
2026
·
IF 6
Jiuhong Wei,Yanni Liu,Shihua Zheng,Yajing Cai,Guojie Zhang
Dry reforming of methane (DRM) provides an attractive pathway for the simultaneous utilization of CH4 and CO2 to produce syngas; however, Co-based catalysts typically suffer from metal sintering, formation of hardly reducible cobalt aluminate (CoAl2O4), and severe carbon deposition under high-temperature conditions. Herein, Y-promoted Co catalysts supported on alumina with tailored pore architectures were developed, with particular emphasis on a hierarchical bimodal porous Al2O3 support (Al2O3-BA) integrating ordered mesopores and interconnected macroporous channels. Compared with mesoporous Al2O3-SA and commercial γ-Al2O3-supported counterparts, the 10Co-5Y/A2O3-BA catalyst exhibited smaller Co3O4 crystallites and more uniform nanoparticle dispersion, indicating mitigated agglomeration. H2-TPR analysis revealed enhanced reducibility with a shift of the main reduction peak to lower temperature and a markedly suppressed high-temperature CoAl2O4 feature, suggesting weakened metal–support interaction. CO2-TPD demonstrated an increased population of medium-strength basic sites, favoring CO2 adsorption and activation. XPS indicated a higher Co2+/Co3+ ratio and an increased proportion of surface-adsorbed oxygen species, implying modified surface electronic properties. These structural and surface characteristics translated into superior catalytic performance. The bimodal catalyst delivered the highest CH4 and CO2 conversions over 650–800 °C and maintained stable activity during a 24 h test at 750 °C, achieving 86.5% CH4 conversion, 91.5% CO2 conversion, and an H2/CO ratio of 0.92. Postreaction analyses revealed significantly reduced carbon deposition compared with mesoporous counterparts. Overall, the synergy between Y promotion and hierarchical bimodal porosity effectively modulates metal–support interaction, enhances reducibility and CO2 activation, and suppresses coking, providing a rational strategy for designing durable Co-based catalysts for DRM.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 12
·118382
·
IF 6.3
Junli Yan,Guangxu Tian,Hao Guo,Qi Zhu,Tao Zhang,Fuhui Wang
The inner walls of semiconductor processing chambers are susceptible to corrosion and failure under prolonged exposure to harsh environments. Applying protective ceramic coatings can effectively suppress plasma-induced erosion. This work focuses on high-hardness Y 3 Al 5 O 12 (YAG) ceramics. By introducing La–O bonds, the interfacial strength and corrosion resistance of the coatings are enhanced. A low‑temperature co‑precipitation method combined with liquid‑phase coating was employed to fabricate composite powders of (Y 0.7 La 0.3 ) 2 O 3 @Al 2 O 3 (YLAO) and (Y 0.7 La 0.3 ) 2 O 2 F 2 @Al 2 O 3 (YLAFO) for YAG ceramic coatings, effectively suppressing the differential interfacial reactions between Y and La. The YLAFO coatings exhibit a dense microstructure with uniform elemental distribution. Under NF 3 /O 2 /Ar mixed‑plasma etching conditions, the coating shows an etching rate of only 2.81 nm/min, representing an approximately 88% improvement in erosion resistance compared to Y 2 O 3 ‑derived (YO) YAG coatings. This work demonstrates that coating performance can be enhanced through compositional design and process control, providing a feasible solution for protecting semiconductor etching components.
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JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2026
·
IF 6.7
Peng Zhang,Xiao-Qi Zhang,Yang-Fan Yin,Jie-Ying Liu,Guang-Hui Liu,Yao-Shun Wen,Yu-Hong Kang,Jun Ma,Yan-Jun Li,Xian-Yong Wei
The trade-off between catalyst morphology regulation and electronic structure of metal centers is crucial for achieving goals of heterogeneous catalysis. In this study, a Ni-based mesopore Y zeolite, Ni@MY, was developed by a combined modification strategy of bond blocking and deposition-precipitation, and used for the hydrofining of ethanol-soluble portion (ESP) derived from Dongming lignite ethanolysis. The results show that Ni@MY has excellent hierarchical pore structures and enhanced acidity. These properties effectively improve the electronic properties of metal active centers and the accessibility of medium/large molecules, thereby significantly enhancing the performance of aromatic ring hydrogenation and heteroatom removal. In addition, the synergistic transfer of active hydrogen, including H ··· H, δ+ H ··· H δ- , H + , and H · can be induced over Ni@MY, which effectively promotes the conversion of different aryl ethers into alkyl cyclanes. Analysis revealed that ESP is rich in alkanes, arenes, phenols, ketones, and esters, with aromatics accounting for up to 69.3%. After hydrofining, the refined oil contained 96.8% saturated hydrocarbons, among which cyclanes accounted for as much as 83.6%. Compared with conventional Ni@Y, Ni@MY has superior suitability for processing complex crude oils derived from lignite liquefaction for producing high-grade liquid fuels.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Qing-rui Zeng,Zi-ang Jia,Xu Liu,Bo-wen Xiu,Jin-ping Cheng
The rational application of piezoelectric polarization properties in non-centrosymmetric heterojunctions to improve charge separation efficiency is a novel approach for enhancing their photoelectrocatalytic capabilities for environmental purification. Herein, a noval 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 multiple heterostructures with two types S-scheme heterojunctions was formed by multi-functional materials NaBi(MoO 4 ) 2 with Y 3+ ion-doping and multi-phase state (1T, 2H and 1T-2H) MoS 2 quantum dots multi-interface polarization engineering. Material characterization and DFT calculations revealed that 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 multiple heterostructures produce highly-efficient Bi-S-Mo(IV) and Mo(IV)-S-Mo(VI) charge-transfer channels induced by multi-interface polarization engineering. 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 heterostructures were developed as photoanodes using the pressed tablet stainless-steel mesh (PT-SSM) method, and demonstrated conspicuous piezoelectric-photoelectrocatalytic (PZ-PEC) efficiency (99.88% removal within 40 min) for the degradation of organic pollutant phosphodiesterase-5 inhibitor (PDE-5i) under visible light illumination, direct-current external bias and mechanical force. This work provides new insight for synergy and mechanism between piezoelectric effect and photoelectrocatalysis for environmental clean-up.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Meng-xing Xu,Yan Xu,Yu-zhen Liu,Dan Zhao,Shun-min Ding,Chao Chen
Acquiring practical catalysts was crucial for promoting the application of advanced chemical transformations. Here, a series of Co-Ni-P catalysts with addition of Y were designed for hydrogenation transformation of biomass-derived levulinic acid (LA) or furfural (FAL) in water. The molar-composition-manipulated catalysts were characterized in Co-Ni phosphide alloy nanostructure with YPO 4 enriched on surface and denoted as (YPO 4 ) x /Co y Ni 2-y P. By comprehensive catalytic measurements, both Co:Ni ratio in phosphide alloy and amount of YPO 4 were testified to be key factors to modulate intrinsic catalytic properties (hydrogen activation and acid catalysis) along Y-Co-Ni-P interface, the attractive and reproducible yield for desired product γ-valerolactone (up to 98 %) or cyclopentanone (up to 93%) could achieve under low H 2 pressure of 0.1–0.5 MPa over the well modulated catalyst (YPO 4 ) 0.2 /Co 1.0 Ni 1.0 P in comparison with high H 2 pressure (beyond 1.0 MPa) required in most of literature systems, indicating that the efficiency and feasibility of these important biomass transformations could be greatly enhanced on the low-cost and robust (YPO 4 ) x /Co y Ni 2-y P catalysts. These findings suggested that the phosphide-alloy engineering technique provided in this work could serve as a novel and practical method for innovating competitive catalysts to boost advanced heterogeneous catalysis applications as well as current aqueous hydrogenation transformations of biomass derivatives.
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