Symmetry-Basel
·
2025
·Vol. 17
·期 2
·224
·
IF 2.2
Yaohui Xu,Yong Li,Liangjuan Gao,Zhao Ding
CeO2has a potential application in the purification of organic dye wastewater because of the abundant oxygen vacancy (VO) defects in its crystals. In this study, a cubic CeO2microsphere with layered interleaved symmetrical 3D flower-like morphology was synthesized, and its adsorption capacity for acid orange 7 (AO7) was further enhanced by Y doping. The impact of varying amounts of Y ions on the phase composition, lattice parameters, and morphology of the product was investigated, revealing that 4 mol.% was determined as the doping level limit of Y ions in CeO2crystals. XPS, Raman, and H2−TPR techniques were employed to compare surface species changes before and after 4 mol.% Y doping in the CeO2crystals, including O−Ce(III), O−Ce(IV), O−Y(III), and VOcorrelation, yielding a rough quantitative assessment of these species. The 4 mol.% Y-doped CeO2(2.0 g/L) demonstrated the highest removal rate for 20 mg/L of AO7 dye within just 20 min to reach adsorption–desorption equilibrium, half the time required by undoped CeO2, achieving an impressive adsorption rate of 94.6%, compared to only 69.5% for undoped CeO2at 20 min. The adsorption capacity of undoped CeO2was enhanced by 19.05% through the doping of 4 mol.% Y, achieving a value of 16.56 mg/L. The feasibility of enhancing the adsorption capacity of CeO2by Y doping provides a reference for the application of CeO2and other metal oxides.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2024
·
IF 4.8
Xiaoqian Li,Shenyong Ren,Lu Liu,Chi Yang
A core-shell structured USY-xTT@NiMo catalyst was prepared through thermal treatment method and evaluated for the catalytic hydrodesulfurization (HDS) performance toward dibenzothiophene (DBT). The shell assembled from NiMoS nano-wool provided abundant active site. This nano-wool morphology and core-shell structure resulted in the catalyst with enhanced specific surface area, pore volume, lower interaction between the support and active metals, and facilitated metal dispersion. In addition, the nano-wool morphology and core-shell structure also promoted the degree of sulfurization and provided more sulfur vacancies, which enhanced the HDS performance of the corresponding catalysts. An efficient USY-16TT@NiMo catalyst with shorter slab lengths (average 2.50 nm), higher average stacking number (3.37 layers), and more edge active sites was assembled, which showed superior k HDS value of DBT up to 8.29 × 10 −4 mol g −1 h −1 and high direct desulfurization selectivity to be 88 %.
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ACS Nano
·
2024
·
IF 15.8
Weijun Wang,Wenqing Wang,Yaxin Chen,Mengling Lin,Yan-Ru Chen,Ruijin Zeng,Tenghang He,Zhifa Shen,Zai-Sheng Wu
A major impediment to the clinical translation of DNA tiling nanostructures is a technical bottleneck for the programmable assembly of DNA architectures with well-defined local geometry due to the inability to achieve both sufficient structural rigidity and a large framework. In this work, a Y-backbone was inserted into each face to construct a superlarge, sufficiently rigidified tetrahedral DNA nanostructure (called RDT) with extremely high efficiency. In RDT, the spatial size increased by 6.86-fold, and the structural rigidity was enhanced at least 4-fold, contributing to an ∼350-fold improvement in the resistance to nucleolytic degradation even without a protective coating. RDT can be mounted onto an artificial lipid-bilayer membrane with molecular-level precision and well-defined spatial orientation that can be validated using the fluorescence resonance energy transfer (FRET) assay. The spatial orientation of Y-shaped backbone-rigidified RDT is unachievable for conventional DNA polyhedrons and ensures a high level of precision in the geometric positioning of diverse biomolecules with an approximately homogeneous environment. In tests of RDT, surface-confined horseradish peroxidase (HRP) exhibited nearly 100% catalytic activity and targeting aptamer-immobilized gold nanoparticles showed 5.3-fold enhanced cellular internalization. Significantly, RDT exhibited a 27.5-fold enhanced structural stability in a bodily environment and did not induce detectable systemic toxicity.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Mingzhe Li,Jiahui Zheng,Fengchun Zheng,Xin Zhang,Yunlong Wang,Kepi Chen,Nian Ran,Wei Zhou,Yuzhen Lv
Developing highly efficient catalysts with ultralow-loading metal is still hindered by the sluggish Volmer–Tafel kinetics for the alkaline hydrogen evolution reaction (HER). Herein, an efficient catalyst was designed and constructed on nickel foam by integrating oxyphilic Y-doped NiO with NiPt1% nanocrystalline via a facile one-step electrodeposition. It requires only 21.2 and 178.5 mV to achieve 10 and 1000 mA cm–2, with a low Tafel slope of 27.8 mV dec–1. Furthermore, it provides an ultrahigh mass activity of 42.7 mA μgpt–1 @ 100 mV and a high stability over 2000 h at 1 A cm–2 almost without potential decay. In-situ experiments and D2O electrolysis tests reveal that the oxyphilic Y-NiO component not only reduces the activation energy of NiPt1% alloy by 32% and enhances its surface hydrogen (*H) coverage 7.8 times but also markedly boosts the Volmer step. Density functional theory calculations further reveal that Y-NiO strengthens water adsorption and shifts both Volmer and Tafel steps on the NiPt1% alloy surface from nonspontaneous to spontaneous, while reducing their energy barriers by 32 and 23%, respectively. This work presents an effective approach for regulating the Volmer–Tafel process in ultralow-loading metal alloys for alkaline HER.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Binghao Wang,Yuzhi Zhang,Xinyu Wang,Jiayu Ma,Maofei Zhang,Lingnan Wu,Changchun Chen
Infrared radiation materials occupy an important position in energy saving of industrial furnaces and thermal protection of spacecraft, but the existing IR radiation materials can hardly satisfy the dual requirements of high emissivity in a wide band and excellent thermal stability at the same time. Here, high-entropy perovskite oxides A(Mn 0.2 Fe 0.2 Co 0.2 Ni 0.2 Cu 0.2 )O 3 (A = La, Y) are prepared using solid-phase synthesis. The introduction of the high-entropy design provides the cationic valence behavior, increases oxygen vacancy concentration and reduces the symmetry of the lattice vibration, thus narrowing the band gap, increasing the free carrier concentration, and improving the lattice vibration. This enhances the material's intrinsic absorption, carrier absorption, and lattice vibration absorption, ultimately resulting in a material with high emissivity in a wide band. Among them, La(Mn 0.2 Fe 0.2 Co 0.2 Ni 0.2 Cu 0.2 )O 3 shows an emissivity of 0.864 at 0.78–3 μm and 0.855 at 3–8 μm, respectively. Moreover, it exhibits stronger thermal stability, and its emissivity shows an upward trend with the increase of temperature, which highlights the key role of A-site cations in regulating lattice distortion and defect dynamics. This work provides a new paradigm for designing materials with IR radiation performance for service in high-temperature environments.
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DYES AND PIGMENTS
·
2025
·
IF 4.2
Ziyi Lu,Chang Wang,Hailong Cui,Jinglong Li,Meiyu Zhen,Xiaoqing Xiong
Photodynamic antimicrobial technology is an effective approach for eliminating bacteria. With growing emphasis on personal health, the development of functional textiles with photodynamic antimicrobial properties has emerged as a significant research focus. Here, Eosin Y (EY) was employed as the photosensitizer, and poly(caprolactone) (PCL) served as the substrate. A series of photosensitizer-loaded PCL&EY nanofiber membranes were successfully fabricated using electrospinning. The results demonstrated that these nanofiber membranes exhibited excellent fiber diameter distribution, mechanical properties, and hydrophilicity at a photosensitizer content of 0.034 ± 0.001 wt%. To further optimize the properties of the PCL&EY nanofiber membranes, varying concentrations of bovine serum albumin (BSA) were incorporated into the electrospinning solution to modulate the properties of PCL membrane. Among them, the PCL&15EY&75BSA nanofiber membrane with a BSA concentration of 0.166 ± 0.001 wt% exhibited optimal performance across all evaluated parameters, particularly demonstrating a transformation from hydrophobic to hydrophilic properties. Antimicrobial performance tests revealed that the addition of BSA enhanced the photodynamic antibacterial efficiency of the PCL&EY nanofiber membrane, with the PCL&15EY&75BSA membrane achieving bacteriostatic rates of 95 ± 1 % against Escherichia coli ( E. coli ) and 99 ± 1 % against Staphylococcus aureus ( S. aureus ). To expand their applications, these nanofiber membranes were combined with activated carbon masks, creating functional textiles with both high gas permeability and effective antibacterial properties. Therefore, the strategy of incorporating BSA into the electrospinning solution is an effective approach to improving the performance of nanofiber membrane.
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MATERIALS CHARACTERIZATION
·
2025
·
IF 5.5
Qian Wen,Xiaopeng Hu,Junyao Wu,Qing Liu,Sai Liu,Duzhong Zhu,Jinwei Guo,Wang Zhu
Medium-high entropy RETaO 4 (RE = Y, Gd, Yb, Dy, Sm) ceramics are prepared by high-temperature solid-state reaction. Results show that doping rare earth ions into the A site improves the hardness, elastic modulus, fracture toughness, and fracture strength of the ceramics. As the solid solution components increase, hardness rises from 5.19 GPa to 7.43 GPa, elastic modulus from 55.2 GPa to 88.8 GPa, fracture toughness from 1.10 MPa·m 1/2 to 2.05 MPa·m 1/2 , and fracture strength from 31.8 MPa to 58.6 MPa. This enhancement is attributed to higher lattice distortion, increased internal energy, and stronger bonding. The proportion of transgranular fracture increases with solid solution content. Ferroelastic domain structures cause crack tip deflection, leading to greater fracture energy absorption. Furthermore, high-entropy and lattice distortion effects in (5RE 1/5 )TaO 4 ceramics promote high-density dislocation regions under stress, enhancing dislocation toughening.
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Scientific Reports
·
2018
·Vol. 8
·期 1
·1-8
·
IF 4.122
Zhang Hong,Li Xintong,He Fan,Zhao Mingqin,Ling Liansheng
A novel turn-off colorimetric sensor for sequence-specific recognition of single-stranded DNA (ssDNA) was established by combining Y-shaped DNA duplex and G-quadruplex-hemin DNAzyme. A G-rich single-stranded DNA (Oligo-1) displays peroxidase mimicking catalytic activity due to the specific binding with hemin in the presence of K + , which was able to catalyze the oxidation of colorless 2,2′-azinobis(3-ethylbenzothiazoline)-6-sulfonic acid (ABTS 2− ) by H 2 O 2 to generate green ABTS− radical for colorimetric assay. Oligonucleotide 2 (Oligo-2) was partly complementary with Oligo-1 and the target DNA. Upon addition of target DNA, Oligo-1, Oligo-2 and target DNA can hybridize with each other to form Y-shaped DNA duplex. The DNAzyme sequence of Oligo-1 was partly caged into Y-shaped DNA duplex, resulting in the inactivation of the DNAzyme and a sharp decrease of the absorbance of the oxidation product of ABTS 2− . Under the optimum condition, the absorbance decreased linearly with the concentration of target DNA over the range of 1.0–250 nM and the detection limit was 0.95 nM (3σ/slope) Moreover, satisfied result was obtained for the discrimination of single-base or two-base mismatched DNA.
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Materials Today Bio
·
2025
·
IF 10.2
Yue Wang,Ximing Liao,Lei Zhou,Songchao Fu,Qing He,Xinqi Chen,Linxi Xia,Cihui Liu,Feng Liu,Lei Yang
We developed a magnetically responsive Y-shaped hydrogel mitral clip for minimally invasive repair of mitral regurgitation. Fabricated through a multilayer assembly strategy, the clip integrates a polyurethane layer featuring a biomimetic inverse opal architecture to enhance tissue adhesion, a GelMA/Fe 3 O 4 hydrogel for magnetic actuation, a flexible epoxy acrylate scaffold for mechanical compliance, and a biocompatible polydimethylsiloxane interface. The clip exhibits Janus wettability, with a hydrophilic inner surface to promote effective leaflet anchoring and a hydrophobic outer surface to minimize blood fouling, thus optimizing device-tissue and device-fluid interactions. Performance was validated through in vitro, ex vivo, and computational studies, confirming precise magnetic clamping, strong adhesion, and mechanical resilience under simulated physiological conditions. Hemocompatibility evaluations demonstrated favorable outcomes in terms of blood interaction and reduced thrombogenicity when benchmarked against commercial alternatives. This soft, adaptive device supports minimally invasive deployment and reliable leaflet fixation, offering a promising approach for next-generation transcatheter mitral valve repair with enhanced tissue integration and blood compatibility.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 34
·2170
·
IF 2.8
Wang Yan,Su Congxue,Tao Wenlong,Chen Zelong,Fan Jun,Cheng Min,Chen Beiyi,Zhou Huanfu,Sun Yuan
In light of advancements in 5G/6G technologies, current research on microwave dielectric ceramics is focused on the development of materials characterized by low sintering temperatures and low permittivity, in order to satisfy the requirements of high-frequency low-temperature co-fired ceramic (LTCC) applications. Novel monoclinic structure GdBaK(MoO 4 ) 3 and YBaK(MoO 4 ) 3 ceramics, with C2 / c space group, were synthesized using a conventional solid-state method. GdBaK(MoO 4 ) 3 and YBaK(MoO 4 ) 3 ceramics were sintered at 830 °C and 850 °C, exhibited ε r ~ 8.54 and 8.77, τ f ~ − 51.1 ppm/°C and − 45.8 ppm/°C, Q × f ~ 23, 240 GHz and 59, 277 GHz, respectively. The compression from Ba 2+ and K + cations was identified as the main reason for the higher theoretical ε theo compared to the corrected ε corr . The dielectric loss of both ceramics is mainly affected by the density and packing fraction. The full width at half maximum (FWHM) values of the vibrational peak at 932 cm −1 , corresponding to the symmetric stretching modes of MoO 4 2− , exhibits a negative correlation with the Q × f values. Based on the P–V–L theory, the lattice energy and bond energy associated with the Mo–O bond played a substantial role in influencing the Q × f and τ f . Moreover, YBaK(MoO 4 ) 3 showed good chemical compatibility with Ag, indicating its potential for LTCC applications.
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MATERIALS CHARACTERIZATION
·
2025
·
IF 5.5
Xianshu Dong,Tianshun Dong,Jingkun Li,Yanfei Jiang,Binguo Fu,Guolu Li
To improve the wear resistance of Al 30Si coatings, nano-Y₂O₃-reinforced Al 30Si (Y₂O₃/Al-30Si) coatings were fabricated on 6063 aluminum alloy substrates by atmospheric plasma spraying (APS). The effect of nano-Y 2 O 3 addition on the coating was studied in detail. The results show that nano-Y₂O₃ reduced the porosity of the Al 30Si coatings from 8.2 % to 3.1 %. Nano-Y₂O₃ can provide heterogeneous nucleation sites for primary silicon (β-Si) phases, enabling the Y₂O₃/Al-30Si coating to achieve a 57.4 % reduction in β-Si phase size. Correspondingly, the microhardness, elastic modulus and fracture toughness of the coating increased by 11.0 %, 11.2 % and 48.9 %, respectively. Under the present test conditions, the Y₂O₃/Al-30Si coating exhibited a lower coefficient of friction and a 27.2 % reduction in wear volume. Both the Y₂O₃/Al-30Si and Al 30Si coatings exhibited abrasive, oxidative, and fatigue wear mechanisms.
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SYNLETT
·
2023
·
IF 2
Shengyu Yu,Jiahao Liu,Zhe Wang,Terumasa Kato,Yan Liu,Keiji Maruoka
A series of soluble Y-shaped trimers of chiral phase-transfer catalysts were synthesized and utilized in the asymmetric alkylation of amino acid Schiff bases. The length of the linker between the ammonium cation of the simplified Maruoka catalyst and a phloroglucinol moiety was varied and excellent yields and enantioselectivity were observed when using the Y-shaped trimer of chiral phase-transfer catalyst with an octamethylene linker. A theoretical study of the most efficient Y-shaped trimer of chiral phase-transfer catalyst suggests the chiral ammonium center of the catalyst is more exposed and thus more available in the reaction.
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