DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Xianfeng Ma,Huiying Dai,Luyao Zhao,Xiaolan Liang,Xiuquan Xu,Xiaofeng Yu
A low-cost Cu-Mo dual-doped carbon nitride nanozyme was synthesized. • It shows excellent peroxidase-like activity via superoxide radical pathway. • A smartphone-based platform enables portable and visual D-PA detection. D-Penicillamine (D-PA), a sulfur-containing amino acid, is used to treat various diseases such as Wilson's disease, fibrotic lung disease, and cystinuria. However, excessive intake of D-PA can cause adverse effects, necessitating the development of accurate quantitative detection methods. This study aimed to establish a visual colorimetric method for D-PA detection using a synthesized Cu-Mo dual-doped carbon nitride nanomaterial ( Cu - Mo - VC - CN ). The synthesis capitalizes on the simplicity and cost-effectiveness of a one-pot thermal polymerization reaction, utilizing only inexpensive and commercially available precursors, namely copper chloride, ammonium molybdate, urea, and vitamin C. The material exhibited exceptional peroxidase-like activity, catalyzing the oxidation of TMB by H 2 O 2 via a superoxide radical pathway. The optimal reaction conditions were: temperature 30 °C, time 30 min, pH 5.5, TMB concentration 0.2 mM, and H₂O₂ concentration 0.2 mM. Steady-state kinetic analysis revealed that the Cu - Mo - VC - CN nanozyme had Michaelis-Menten constants ( K ₘ) of 0.083 mM for TMB and 0.603 mM for H 2 O 2 . Under optimal conditions, the system enabled highly sensitive D-PA quantification with a linear range of 0.5–100 μM and a detection limit of 0.45 μM. The nanozyme was successfully applied to determine D-PA content in pharmaceutical tablets with satisfactory recovery (from 97.73 to 98.27%). Furthermore, a smartphone-based testing platform was established to provide a portable and practical solution for the real-time monitoring of D-PA. This work provides both an efficient strategy for developing multi-metal-doped nanozymes and a reliable colorimetric platform for D-PA monitoring. Download: Download high-res image (279KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Jinghao Zhao,Baoqin Hao,Wei Tan,Jing Chen,Yan Meng,Lin Han,Xinhao Qu,Xin Li
Constructing vanadium oxide/metal selenide heterostructure is a promising strategy to enhance the reaction kinetics and structural stability for high-performance sodium-ion batteries (SIBs) anode. However, achieving a uniform and robust heterointerface remains challenging due to the multivalent state transformation of the V and the thermodynamic stability difference between V O and V Se bonds. Herein, we design and synthesize the V 2 O 3 /Fe 3 Se 4 @C heterostructure via a facile liquid-phase reaction followed by a seleniziation method. The unique coordination environment in a ferric vanadate and the reduction potentials difference between Fe and V cations promote the formation of a well-defined heterointerface. Density functional theory calculations confirm the formation of a built-in electric field at the heterointerface, thereby accelerating the reaction kinetics. The electric field originates from the orbital hybridization, which promotes the formation of a robust Se V O bonding configuration. Meanwhile, the carbon coating maintains structural integrity by suppressing volume expansion during cycling. These synergistic effects effectively enhance the overall structural stability of the material. Thus, the prepared V 2 O 3 /Fe 3 Se 4 @C anode exhibits exceptional electrochemical performance, delivering a high specific capacity of 378.2 mAh g −1 at 0.5 A g −1 and 308.9 mAh g −1 at 8 A g −1 , and retaining a specific capacity of 313.8 mAh g −1 after 2500 cycles at 5 A g −1 . This work establishes a new electron orbital modulation strategy for exploring high-performance vanadium oxide-based anode materials for SIBs.
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高影响因子
Nanomaterials
·
2026
·Vol. 16
·期 13
·820
·
IF 4.8
Xiaomin Tian,Yuan Cao,Huilin Zhou,Fanjie Tan,Ziqin Zhang,Liying Pei,Yi Ma,Jianzhi Gao,Wenliang Zhu,Minghu Pan
Tuning the d -band electronic structure of non-noble-metal catalysts is a central strategy for an alkaline hydrogen evolution reaction (HER), yet how composition controls the d orbital in multi-Wyckoff-site layered systems remains insufficiently understood. Here, layered (Fe 1- x Ni x ) 3 GaTe 2 single crystals ( x = 0.2–1.0) were synthesized by the self-flux method as a platform to address this question. Single-crystal XRD and EDS confirm that Ni is uniformly incorporated into the parent P6 3 /mmc framework while inducing a composition-dependent lattice evolution. Electrochemical measurements in 1.0 M KOH reveal a clear volcano-shaped composition dependence, peaking at x = 0.6, where the lowest overpotential, the smallest Tafel slope (94 mV dec −1 ), the lowest charge-transfer resistance and the largest double-layer capacitance are simultaneously reached. First-principles calculations show that Ni doping reshapes the Fe-site d orbital strongly composition-dependent rate: the Fe d -band center upshifts rapidly by ~0.5 eV between x = 0.4 and x = 0.6, while the Ni d -band center stays nearly fixed in the same composition range. The maximum of HER activity therefore aligns with a steep upshift of the Fe d -band center rather than with the Ni content itself. Charge-density mapping of (Fe 0.4 Ni 0.6 ) 3 GaTe 2 further demonstrates that the electron-enriched regions are located on the Fe and interlayer Ni3 sublattices that dominate the d states near E F .
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PHYTOMEDICINE
·
2026
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IF 11.3
Yujuan Li,Jingyi Yang,Xiaotong Shao,Yunhe Tao,Shihui Ling,Xiaomeng Li,Qifeng Ye,Bin Guo,Hongsheng Bi
Despite advancements in treatments such as atropine, the pathological changes in high myopia still lead to vision loss, highlighting the need to identify novel therapeutic targets. Clinically, axial elongation are closely related to reduced choroidal blood flow. This study revealed that the pyroptosis-associated protein Gasdermin D (GSDMD) may play a key role in high myopia. Experiments showed that chemical inhibition of GSDMD significantly reduced axial elongation and choroidal blood flow reduction. Furthermore, by screening pharmacologically active traditional Chinese medicine compounds, we identified that Artemisia argyi (Aiye) and its active ingredient apigenin act as effective GSDMD inhibitors, capable of replicating the protective effects observed with chemical inhibition. In all, this study suggests that GSDMD is a potential target mediating axial elongation and choroidal blood flow changes in high myopia, and apigenin is a potential therapeutic strategy for intervening in high myopia.
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高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
·
2026
·
IF 3.9
Zhicen Liu,Caiyun Wang,Junjian Wu,Ming Chen,Yue Zhang
This study developed a highly efficient immobilized phospholipase D (PLD) system using a magnetic chitosan-based carrier with the natural crosslinking agent genipin (Fe 3 O 4 @CS-Gnp-PLD). Systematic characterization confirmed successful PLD immobilization, with chitosan's abundant amino and hydroxyl groups providing stable binding sites that enhanced both enzyme loading and stability. In the sodium deoxycholate-based mixed micelle system, the Fe 3 O 4 @CS-Gnp-PLD achieved an 8.05-fold higher phosphatidylserine (PS) conversion rate than free PLD, owing to enhanced substrate solubility and improved enzyme accessibility. The immobilized enzyme demonstrated exceptional operational stability, retaining 80% activity after 6 reuse cycles and 72% activity after 12 days of storage at 4 °C. This integrated platform, combining chitosan-based enzyme immobilization with a mixed micelle system, offers an efficient, stable, and recyclable approach for sustainable PS biomanufacturing.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
·
IF 4.8
Haoyu Zheng,Zhen Sun,Jianjun Liu,Su-an Xu,Jiadan Xue,Yong Du
A graphene-enhanced double-D metamaterial sensor exhibits electric-dipole scattering. • The maximum refractive index sensitivity of the optimized sensor reaches 204 GHz/RIU. • The graphene-coated sensor responds measurably at the lowest tested level of 1 μM. • The double-D electric-dipole sensor enables trace glucose detection using THz-FDS. Terahertz metamaterial sensors provide an efficient platform for highly sensitive biochemical detection. Herein, a graphene-enhanced terahertz metamaterial sensor was developed and coupled with a terahertz frequency-domain spectroscopy (THz-FDS) system for trace-level detection of glucose. A metamaterial sensor comprising a double-D-shaped split-ring aluminum resonator was fabricated, which exhibited a pronounced resonance at 0.951 THz under transverse-electric (TE)-polarized terahertz incidence. Multipole decomposition, together with electric-field, magnetic-field, and surface-current analyses, showed that the resonance is dominated by the electric dipole (ED). The ED channel accounts for approximately 98.59% of the summed isolated multipolar scattering power, whereas the toroidal dipole (TD) and magnetic quadrupole (MQ) provide only minor contributions. After structural optimization, CST simulations of bulk refractive-index variation yielded a sensitivity of 204 GHz/RIU, characterizing the simulated index-sensing performance of the resonator. To achieve high-precision detection of trace-level glucose, monolayer graphene was transferred onto the metamaterial surface using a wet transfer method. Experimental measurements showed a measurable response at the lowest tested concentration of 1 μM for the graphene-coated sensor, whereas the bare sensor showed a clear concentration-dependent response primarily in the millimolar range. Although the resonance amplitude varied nonmonotonically with concentration, the resonance-frequency shift increased monotonically and yielded a log-concentration calibration with R 2 = 0.932. Controlled paired simulations separated the contributions of graphene Fermi-level modulation and conventional dielectric loading. At an analyte thickness of 40 μm, the graphene-associated shift was +182.609 GHz, whereas dielectric loading produced redshifts of −245.081 GHz at E f = 0 and −247.997 GHz at E f = −120 meV. The interaction residual was −2.916 GHz, or 1.60% of the graphene contribution, indicating that the two effects are approximately additive under full loading. This work demonstrates that graphene-enhanced terahertz metamaterials can serve as highly sensitive sensing platforms for trace substance detection and provides both a physical strategy and experimental basis for developing high-performance terahertz biosensors involving interactions with low-dimensional materials. Download: Download high-res image (148KB) Download: Download full-size image
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高影响因子
MOLECULES
·
2025
·Vol. 30
·期 12
·2618
·
IF 4.6
Kaining Sun,Xinyi Yang,Fei Qi,Yingjie Liu,Lijing Wang,Bo Feng,Jiankang Yu,Guangbo Che
Peroxymonosulfate (PMS)-based advanced oxidation technology has emerged as an effective means for removing organic pollutants from water due to its strong oxidizing ability. However, enhancing the activation efficiency of PMS represents a key challenge at present. SrTiO3, a typical perovskite metal oxide, holds potential in the field of the photocatalytic degradation of pollutants, yet its application is limited by the wide bandgap and fast carrier recombination rates. This study optimized the photocatalytic performance of SrTiO3by regulating its electronic structure and optical properties through cobalt (Co) doping. Experimental results (TRPL, TPV, UV–Vis DRS, ESR, etc.) and DFT calculations (GGA-PBE) demonstrated that Co doping shifted the d-band center of SrTiO3upwards, optimized the adsorption energy of SO4−, enhanced the sunlight response range, and significantly improved carrier extraction efficiency. Under visible light irradiation, 2,4-dichlorophenol (2,4-DCP) could be effectively degraded within 60 min in a wide pH range. Through Fukui function calculation (B3LYP/6-31G*) and experimental characterization analysis (HPLC-MS and IC), the possible degradation pathways of 2,4-DCP and the mechanism for photocatalysis were investigated. The toxicity analysis (T.E.S.T) confirmed the reduced toxicity of the degradation products of 2,4-DCPs. This study provides a reference for the catalyst design and optimization strategy of PMS-based advanced oxidation technology.
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JOURNAL OF POLYMER RESEARCH
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2025
·Vol. 32
·期 6
·1-12
·
IF 2.8
Wu Yaowei,Jiang Zuming,Wang Yuhao,Jiang Xiancai,Hou Jian,Wei Bei
Polyacrylamide (PAM) serves as an effective thickening agent for oil recovery. However, its viscosity loss during underground transport significantly reduces oil recovery efficiency in reservoir applications. To solve this problem, polyurethane was selected for microencapsulation of PAM through a simple emulsion polymerization method in this work. It is worth mentioning that non-toxic and renewable D-sorbitol was used as a chain extender in the synthesis of polyurethane microcapsules instead of the commonly used diols or diamines obtained from non-renewable petroleum resources, which has not been reported in previous reports. Mechanical stirring was used to simulate the state of polymer subjected to shear during stratigraphic transport. The releasing performance of the microcapsules was characterized by measuring the change of viscosity with time. Meanwhile, we optimized the ratio of D-sorbitol to achieve the longest release time. Experiments showed that D-sorbitol was feasible as a chain extender for the preparation of microcapsules of polyurethane, and the microcapsules prepared at a concentration of 8% D-sorbitol solution had the longest slow-release time of 75 h at 25 °C and 500 rpm. We also prepared samples with BDO as a chain extender for comparison, and the experiments showed that SO8 has a longer slow-release time and can better meet the demand. The prepared microcapsules SO8 exhibited excellent shear resistance and heat resistance, which was attributed to the rigidity and high cross-linking density brought about by D-sorbitol as a hard chain segment of polyurethane. These PAM-containing microcapsules had a promising application in enhancing oil recovery.
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FOOD MICROBIOLOGY
·
2026
·
IF 5.4
Jian Chen,Shiya Guo,Huan Li,Shigenobu Koseki,Jianhao Zhang,Xiaowei Sheng,Yanbo Wang
Dielectric barrier discharge (DBD) cold plasma combined with d -tryptophan ( d -Trp) exhibited a pronounced synergistic inactivation effect against Shewanella baltica , a dominant spoilage bacterium in aquatic products, and the underlying reactive oxygen species (ROS)-mediated mechanism was elucidated. 40 s combined treatment (DBD + d -Trp) achieved a 7.31 log CFU/mL reduction, markedly exceeding the 1.3 log reduction obtained with DBD treatment alone. Physicochemical analysis showed elevated hydrogen peroxide and nitrite levels accompanied by decreased pH in the synergistic system. Electron paramagnetic resonance and radical scavenging assays revealed that d -Trp selectively enhanced singlet oxygen ( 1 O 2 ) generation while suppressing hydroxyl radicals and superoxide anions, thereby reshaping the ROS profile compared to DBD treatment alone. Severe cellular damage was observed by scanning electron microscopy, and increased alkaline phosphatase release, potassium leakage, and membrane depolarization confirmed disruption of the cell envelope integrity. Elevated intracellular ROS accumulation and dysregulation of antioxidant enzyme activity indicated aggravated oxidative stress leading to bacterial death. The synergistic inactivation effect was further validated in fish juice, demonstrating superior efficacy compared to individual treatments. These findings demonstrate that d -Trp potentiates plasma inactivation through selective modulation of ROS composition and provide a mechanistic foundation for developing targeted control strategies against specific spoilage bacteria in aquatic products.
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Surfaces and Interfaces
·
2026
·
IF 6
Lihuan Feng,Yulin Wang,Hao He,Chunyu Li,Peng Chen,Qiang Liu,Xing’an Dong,Wenjie He,Jiazhen Liao,Wendong Zhang
Solar-driven photocatalytic CO 2 reduction provides a sustainable pathway for carbon-neutral fuel production, yet its efficiency is fundamentally limited by the chemical inertness of linear CO 2 and inefficient utilization of photogenerated charge carriers. Effective activation of CO 2 requires electron injection into its antibonding π* orbitals, a process that is poorly matched with conventional oxide photocatalysts. Herein, we construct chemically defined Ti-O-Fe interfacial bonds in TiO 2 /Fe 2 O 3 heterojunctions to establish a directional d→π* electron-transfer channel for CO 2 activation. The optimized TiO 2 /Fe 2 O 3 photocatalyst, synthesized via a one-step hydrothermal method, exhibits broadened visible-light absorption and delivers a CO formation rate of 17.56 μmol·g −1 ·h −1 , over three times higher than that of pristine TiO 2 . Spectroscopic analyses and density functional theory calculations reveal that interfacial electron transfer shifts Fe 3d states toward the Fermi level, enabling strong hybridization with the CO 2 π* orbitals and significantly lowering the free-energy barrier for *COOH formation. This bond-mediated electronic coupling not only suppresses charge recombination but also directs photogenerated electrons toward the CO 2 activation pathway. These results demonstrate that interfacial d-band engineering through chemically specific oxide–oxide bonds provide a powerful strategy to program elementary reaction steps in solar-driven CO 2 reduction beyond conventional band-alignment design.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Minghua Wang,Yaxin Zheng,Dongchen Yang,Yichun Ren,Wei Gao,Ningzhao Shang,Jinlin Zhang,Shutao Gao,Zexiu An,Chun Wang
Co 3 N nanozyme with peroxidase-like activity is synthesized via ammonia-assisted calcination of Co-based Prussian blue analogue, which displays superior catalytic activity for the oxidative degradation of organic pollutants. Co 3 N/peroxymonosulfate (PMS) system achieves complete degradation of imidacloprid (10 mg L −1 ) within 15 min under low catalyst loading (2 mg L −1 Co 3 N and 150 mg L −1 PMS), corresponding to a modified kinetic rate constant of 243.3 min −1 M −1 . Density functional theory (DFT) calculation reveals that the strong electronegativity of nitrogen reduces Co 3d electron occupancy, optimizing the Co d -band center and effectively overcoming the "oxygen wall" barrier, thereby enhancing PMS activation and promoting the formation of high-valent metal-oxo (HVMO) species, Co(IV)=O, which is the key species to achieve selective oxidation in advanced oxidation processes (AOPs). This work demonstrates that modulating the d -band center position of transition metals is a viable strategy for breaking "oxygen wall" limitation and facilitating HVMO species generation in AOPs.
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ACS ES&T Water
·
2026
·
IF 4.5
Ziwen Cheng,Han Zhao,Zhenxiang Sun,Kexin Yin,Qinyan Yue,Weiyan Yin,Baoyu Gao,Yue Gao
Mass transfer limitations in Co-based heterogeneous peroxymonosulfate (PMS) activation systems were effectively mitigated via electronic structure modulation. Nitrogen doping introduces electron-withdrawing effects into Co/NC catalysts, which shifts the Co d-band center upward and optimizes orbital hybridization between the Co 3d and O 2p orbitals. This electronic configuration lowers the antibonding state occupancy in the Co-PMS complex, thereby facilitating PMS adsorption and activation. The engineered Co/NC catalyst completely degrades sulfamethoxazole within 3 min (rate constant: 2.3 min–1), demonstrating enhanced interfacial electron transfer kinetics. Its robust performance is maintained in complex aqueous matrices containing Cl–, NO3–, H2PO4–, and SO42– anions. Moreover, effective pollutant removal persists for over 240 min in a continuous-flow membrane reactor, confirming the practical applicability. This orbital-level design strategy advances cobalt-based PMS activation systems by synergistically optimizing the mass transfer and electronic interactions.
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