Small
·
2026
·
IF 12.1
Rui Ma,Yuan Ren,Zhenliang Li,Yujian Rao,Xueqiong Cui,Tuo Zhang,Zejun Han,Qiongfeng Shi,Yonghui Deng,Li Tao
Transition metal dichalcogenides (TMDs) have attracted significant attention in electronic devices, energy storage, and catalysis owing to their distinctive electronic properties and abundant active sites. Introducing mesoporosity into TMDs is extremely favorable to enhance the host-guest interactions and improve their performance, but very challenging. Herein, we report a universal electrostatic assembly strategy for the synthesis of mesoporous carbon/heteroatom-doped TMDs microspheres with radially oriented pores, using polydopamine (PDA) and polyoxometalates (POMs) clusters as interactive precursors. By employing POMs (e.g., H 3 PW 12 O 40 ) as metal sources and mesoporous PDA microspheres as templates, we successfully synthesized a series of mesoporous C/heteroatom-doped TMDs microspheres (TMDs = P-WS 2 , Si-WS 2 , P-MoS 2 , Si-MoS 2 ). The resulting hybrid microspheres feature an open porous architecture, high charge-carrier mobility, and abundant active sites, benefiting from their high crystallinity and in situ heteroatom doping. When employed in chemiresistive gas sensors, these C/TMDs microspheres demonstrate exceptional room-temperature NO 2 sensing performance, including high sensitivity, excellent selectivity, and rapid response. Density functional theory (DFT) calculations reveal that heteroatom doping (e.g., P) can enhance the structural stability of adsorbed NO 2 , strengthen orbital hybridization with TMDs, and facilitate efficient charge transfer, thereby dramatically improving sensing performances.
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高影响因子
RENEWABLE ENERGY
·
2026
·
IF 9.1
Yuechi Che,Tianxiao Yu,Ying Bai,Ziwei Xue,Beibei Yan,Xuemei Fu,Jian Li,Guanyi Chen
Microwave steam reforming using carbon-based catalyst presents a promising solution for tar elimination in biomass gasification, crucial for renewable syngas production toward heating, electricity, and value-added chemicals. However, activated-steam-induced catalyst deactivation remains challenging. Herein, a ZIF-67-derived core-shell Co/C-TiO 2 catalyst was engineered via tailored TiO 2 hydrophilicity and structural protection. Catalytic performance exhibited a volcano-type trend versus TiO 2 shell thickness. The optimal catalyst (Co/C-T2) achieves a 96.62 % toluene conversion rate and a 72.17 % carbon conversion rate at 550 °C, sustaining >87.61 % efficiency over 6 h. Structural characterizations revealed the core-shell architecture transformed carbon-supported Co(111) structure into anatase TiO 2 (101)-stabilized Co 3 O 4 (311) configuration, significantly enhancing surface basicity and oxygen species density. DFT-based molecular dynamics simulations further elucidated the mechanism by demonstrating reduced adsorption and dissociation energy barriers for H 2 O molecules, which facilitate steam activation in the reforming process. However, excessive TiO 2 coating induces diffusion limitations at the reactant/metal active site interface, coupled with coking-induced pore occlusion, consequently triggering significant deterioration in catalytic activity and stability. This work establishes a facile modification paradigm for developing microwave-responsive carbon catalysts while providing fundamental insights into the structure-activity relationships of core-shell systems in heterogeneous catalysis. These findings offer practical guidance for designing advanced catalysts in sustainable energy conversion applications.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Yang Jiang,Jijiang Huang,Jing Li,Yang Yang,Hongyan Xie
Lithium-rich Mn-based layered oxides are promising cathodes for next-generation high-energy-density lithium-ion batteries. However, their practical use is limited by rapid voltage fading and sluggish high-rate performance. Introducing high-valent dopants such as Nb 5+ is expected to induce charge compensation and strengthen the local TM–O framework, thereby mitigating high-voltage degradation. Here we introduce Nb into cobalt-free Li 1.2 Mn 0.6−x Nb x Ni 0.2 O 2 (x = 0, 0.01, 0.02, 0.03) through a coprecipitation-compatible, water-assisted wet-grinding step followed by calcination, aiming to improve precursor-level mixing and enable controllable high-valent doping. Among the compositions, LLO-0.02Nb delivers the best overall performance, retaining 80% capacity after 200 cycles at 1C (vs. 78% for pristine LLO) and providing 163 and 142 mAh·g −1 at 5C and 10C, respectively, together with a reduced voltage-decay tendency (1.87 mV per cycle). After-cycling electrode analyses (XRD/SEM) reveal better preserved layered-related features and less severe surface degradation for the Nb-doped electrode. Surface spectroscopy (XPS/EPR) further indicates that Nb incorporation regulates the near-surface oxygen environment and transition-metal valence states via charge compensation. These results suggest that a mild Nb addition, enabled by a simple wet-assisted introduction route, can simultaneously enhance voltage stability, cycling durability, and rate capability of Li-rich Mn-based cathodes.
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POLYMER
·
2026
·
IF 4.5
Haoran Peng,Xuejin Li,Qifan Yang,Yao Xue,Yongping Bai,Wei Li,Wenhui Zheng
Polyethylene terephthalate (PET) was widely utilized across diverse fields. However, its inferior hydrophobicity led to considerable practical losses and restricted its application scope. Herein, a new method was used to synthesize high-molecular-weight hydrophobic fluorinated polyester (FPET), effectively addressing the challenges of low reactivity and lengthy reaction times associated with fluorinated alcohols. By leveraging the excellent solubility of FPET, a superhydrophobic polyester material (PSPE) was prepared via solution blending of FPET with modified silica (F–SiO 2 ) and polytetrafluoroethylene (PTFE) particles. Accordingly, the water contact angle (WCA) of the resulting polyester increased from 67° (pristine PET) to 115°, confirming a significant improvement in hydrophobicity, which provided a foundation for achieving superhydrophobic modification. Furthermore, under PTFE particles and F–SiO 2 , the hydrophobicity of the fluorinated polyester was further enhanced—achieving a maximum WCA of 159.5° and a minimum (SA) of 2.3°, which fully met the definition of superhydrophobicity. Even under a 100 g load, the sample maintained its superhydrophobicity after 50 abrasion cycles using sandpaper. Additionally, the incorporation of PTFE particles effectively reduced the dielectric constant of the polyester (dielectric constant ranged from 3.1 to 3.25), endowing it with favorable electrical insulation performance. This study presented an effective and viable strategy for synthesizing fluorinated polyesters with integrated superhydrophobicity, inherent self-cleaning ability, and low dielectric constant. Such multifunctional materials were expected to expand their application potential in water-repellent systems, anti-contamination coatings, and electronic packaging scenarios, addressing the key limitations of pristine PET.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.6
Yuanyuan Liao,Jieran Xie,Lei Sun,Zongyi Huang,Jing Li,Feng Liu,Yongxiu Li
Oxygen evolution reaction (OER) is a critical challenge in electrochemical water splitting, necessitating the development of efficient catalysts. In this study, a room-temperature gas–liquid diffusion strategy is presented to synthesize rare earth-doped NiCo₂O₄ nanosheets on carbon paper (RE-NiCo₂O₄/CP, RE = La, Ce, Pr, Gd) as alkaline OER electrocatalysts. Among them, Ce-NiCo₂O₄/CP demonstrates catalytic activity, requiring an overpotential of only 265 mV to achieve a current density of 20 mA cm⁻² in 1 M KOH, which is lower than that of undoped NiCo₂O₄/CP (348 mV). Comprehensive characterization reveals that RE doping modulates the electronic structure of NiCo₂O₄, increasing the Co 3+ /Co 2+ ratio and optimizing intermediate adsorption. Notably, Ce doping facilitates the formation of highly active Ni(Co)OOH species during OER, further enhancing catalytic performance. Combination experiments and in-situ analysis confirmed that the increase in activity was due to the incorporation of rare earths, which enhanced the charge transfer of reaction intermediates and promoted the formation of highly active phases. This work not only presents a synthesis method for high-performance OER catalysts, but also elucidates the electronic modulation effect into the role of rare-earth elements in tuning electrocatalytic properties.
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MATERIALS & DESIGN
·
2026
·
IF 7.9
Sun Xuetong,Wang Beibei,Sun Hao,Ren Xiue,Zhou Changren
The application of Selective Laser Melting (SLM) porous titanium scaffolds for patient-specific implants is steadily expanding; however, enhancing their bioactivity to support effective bone repair remains a significant challenge. This study presents a novel composite scaffold designed to enable spatiotemporally controlled release of dexamethasone (Dex) and bone morphogenetic protein-2 (BMP-2), thereby promoting bone regeneration and establishing a pro-healing microenvironment in bone defects. The composite scaffold integrates an outer SLM-Ti framework coated with a Dex-loaded polypyrrole (PPy) film for on-demand release, and an inner OSA-Gel (OG) hydrogel loaded with BMP-2-encapsulated mesoporous bioactive glass nanoparticles (MBGNs) for sustained delivery. The results demonstrate that the controlled dual delivery of BMP-2 and Dex exerts a significant synergistic effect in promoting cellular proliferation and osteogenic differentiation in vitro. These findings provide a theoretical basis for advancing SLM-Ti customized implants toward preclinical application in bone regeneration.
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Advanced Science
·
2026
·
IF 14.1
Hongyi Zhang,Jinwei Li,Shan Hua,Shengming Wu,Chenlong He,Yuan Zhu,Ming Yin,Han Zhou,Huawei Liu,Chika Hasegawa,Jun Lyu,Keyue Xiao,Hua Jiang,Yilong Wang,Yuxin Qian
During skin wound healing, complex interactions among multiple cell types and dynamic phase evolution make it difficult for biomaterial scaffolds to balance late‐healing and over‐healing, often resulting in delayed wound healing, persistent inflammatory responses, and hypertrophic scars due to spatiotemporal mismatch. Precise regulation of fibroblast‐to‐myofibroblast transformation and macrophage polarization is therefore essential yet challenging. Fibroblast activation protein (FAP) has been identified as a key bio‐cue in pulmonary and hepatic fibrosis, but whether FAP‐targeting peptide (FTP) within a biomimetic system can address this dilemma remains unclear. Here, a methacrylated hyaluronic acid hydrogel microneedle patch (CAF@MN) integrating a dual‐targeting biomimetic nanozyme system (Cu‐CeO 2 @ABs‐FTP) modified with apoptotic bodies (ABs) membranes and FTP is developed. Cu‐CeO 2 nanocomposites activate fibroblast functions and exhibit anti‐inflammatory, antibacterial, antioxidant, and pro‐angiogenic activities. The ABs membrane enables macrophage targeting and M2 polarization, while FTP specifically modulates myofibroblast activation. The microneedle architecture enhances deep local delivery and nanozyme utilization. In mouse and rabbit full‐phase wound models, the system achieves accelerated wound healing, reduced inflammation, and attenuated hypertrophic scars. Single‐cell RNA sequencing further elucidates the dual‐targeted regulatory mechanisms underlying anti‐inflammation and scar suppression. This study developed a dual‐targeting biomimetic nanozyme hybrid system (Cu‐CeO 2 @ABs‐FTP) and integrated it with HAMA hydrogel to fabricate a microneedle patch (CAF@MN). The patch promotes fibroblast‐mediated wound repair, targets macrophages to induce M2 polarization, and targets myofibroblasts to exert anti‐fibrotic effects, thereby enabling rapid, anti‐inflammatory, and scarless wound healing.
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高影响因子
HYDROMETALLURGY
·
2026
·
IF 6.3
Gengjin Zhang,Yanfang Huang,Longfei Jia,Tianze Chen,Yizhuang Wang,Shengpeng Su,Wenjuan Wang,Hu Sun,Guihong Han
Novel peroxo-complexation strategy was used to purify Nb-rich solution. • NbOF 5 2− transformation to NbO 2 F 5 2− greatly lowers its binding energy with MIBK. • Selectivity coefficient for Sb over Nb was enlarged by over 2300 times. • Nb 2 O 5 product met the high-purity specifications regarding Ta and Sb impurities. The efficient separation of Ta and Sb from Nb in hydrometallurgical processes remains a significant challenge due to their similar chemical behaviors. In this study, a novel peroxo-complexation strategy was introduced to enhance the selectivity of methyl isobutyl ketone (MIBK) extraction in an HF-H 2 SO 4 system. With the addition of H 2 O 2 , the extraction efficiencies of Ta and Sb reached 99.6% and 99.7%, respectively, while the co-extraction of Nb was only 2.32%. The selectivity coefficients of Sb/Nb and Ta/Nb significantly increased from 0.63 and 34.7 to 1461 and 6501, respectively. Stepwise stripping using H 2 SO 4 and pure water effectively recovered Nb and Ta/Sb from the loaded organic phase. Raman spectroscopy and quantum chemical calculations elucidated the mechanism of the enhanced separation selectivity. The peroxo-ligand selectively coordinates with Nb to transform it from NbOF 5 2− to NbO 2 F 5 2− , thereby weakening the negative surface potential of the fluorine atoms bonded to Nb. The binding energy between Nb ions and MIBK decreases from −172 kJ mol −1 to −104 kJ mol −1 , and thus the disparity in the affinity of Nb ions and Ta/Sb ions for MIBK is magnified. Overall, this peroxo-coordination approach provides an efficient and simple pathway for the effective purification of Nb solutions. Download: Download high-res image (176KB) Download: Download full-size image
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2026
·
IF 6.6
Ya-Nan Li,Bo-Han Zeng,Yu-Lin Yuan,Huan Xiong,Ye Tan,Jin Hu,Lin-Ping Yu,Ju-Lan Zeng
Silica-based functionalized composite aerogels possess the merits of high porosity and versatile properties, and can be utilized as a matrix for lots of applications including shape-stable phase change materials (SSPCMs). In-situ functionalization of silica-based aerogel, which can avoid challenges related to the dispersion of functional filler, presents a valuable but less-explored strategy. Herein, metallic copper-functionalized silica (Cu–SiO 2 ) aerogels were synthesized by co-condensing tetraethyl orthosilicate (TEOS) and 3-aminopropyltriethoxysilane (APTES) in the presence of copper acetate via an ambient pressure drying procedure followed by thermal reduction. The Cu 2+ was initially coordinated to the amino groups in APTES and in-situ anchored on the aerogel skeleton, which was then thermally reduced to metallic copper to fulfill the in-situ functionalization. Erythritol (ET) was then vacuum impregnated into the Cu–SiO 2 aerogels to obtain SSPCMs. The prepared SSPCMs exhibited a high ET loading of 86.9%, corresponding to a high latent heat of 307.5 J g −1 , and reduced supercooling. When the aerogel framework contained 3.46 wt% copper, the thermal conductivity of the SSPCM increased by 83.03% compared with that of pure ET. The SSPCM also showed a photothermal conversion efficiency of 71.82% due to the local surface plasmon resonance effect of metallic copper and the multidirectional light-scattering paths provided by the aerogel. In addition, the SSPCMs exhibited excellent thermal reliability over 100 melting/solidification cycles. Overall, this work presents a novel strategy for the preparation of functionalized silica-based composite aerogels and obtained a novel SSPCM for latent heat storage and solar thermal applications.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 33
·44984-45002
·
IF 7.8
Wang Shuaihang,Ji Zhonghao,Shen Ding,Liu Siyu,Hao Jingbin,Cheng Qi,Jia Bao,Guo Liang,Shang Jie,Chen Kai,Han Meng
Currently, the repair of bone defects faces multiple challenges, including insufficient angiogenesis and limited osteogenic differentiation capacity, which pose significant obstacles to treatment. In this study, a ternary composite scaffold composed of PCL-nHA-nMgO (PHM) was fabricated using 3D printing technology. After surface modification with a photothermal polydopamine (PDA) coating, a PHM@PDA composite scaffold was obtained. Metformin (Met) and PDA were loaded into GelMA hydrogels to produce GPM hydrogels. The GPM hydrogels were then packed into the PHM@PDA composite scaffolds, resulting in near-infrared region-I (NIR-I)-responsive PHM@PDA/GPM composite scaffolds. The outer GPM layer serves as a three-dimensional in vivo-like microenvironment, providing physical transport channels for cellular nutrient exchange. Upon stimulation by NIR-I, the scaffold enables the dynamic release of Mg 2+ and Met, upregulates the expression of the VEGF and KDR, accelerates vascular network reconstruction, and creates a mild microenvironment conducive to cell proliferation. Furthermore, by activating the PI3K/AKT signaling pathway, it promotes the expression of osteogenesis-related factors (such as transcription factor Sp7, alkaline phosphatase, and osteocalcin), thereby accelerating the osteogenic differentiation process. In vivo animal experiments, micro-CT and tissue staining confirmed that, under near-infrared light (NIR-I) stimulation, this scaffold significantly increased bone mineral density, trabecular bone thickness, and trabecular bone count and demonstrated excellent angiogenic effects. In summary, this NIR-I-responsive composite scaffold can meet the dual requirements of reconstructing the vascular network and promoting osteogenic differentiation, enabling personalized precision therapy and offering a promising new treatment strategy for complex bone defects where vascular regeneration and osteogenic differentiation are challenging.
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Zijun Nie,Fujian Zheng,Dejun Hu,Zhenzhen Fu,Chongjiang Cao
The annotation of dietary biomarkers is crucial for nutritional epidemiology. While untargeted liquid chromatography–high-resolution mass spectrometry (LC-HRMS) is a powerful analytical approach, the annotation of dietary biomarkers is hampered by the low specificity of existing public databases, which limits annotation coverage and accuracy. To address this limitation, we developed a novel database construction strategy and a dual-annotation workflow. We first employed an automated, large language model (LLM)-based text-mining pipeline to parse 7339 scientific articles and supplementary materials, creating the Dietary Metabolite Biomarker Database (DMBDB), which contains 4983 nonredundant biomarkers. The LLMs workflow demonstrated high performance, achieving an F1 score of 0.9269 for biomarker name recognition. Subsequently, two complementary annotation strategies were designed: (i) a specialized LC-MS database derived from DMBDB, incorporating predicted retention times and experimental MS/MS spectra for high-confidence matching, and (ii) a structure-guided molecular networking strategy (SGMNS) that uses DMBDB as background knowledge to annotate dietary biomarkers and their metabolites lacking spectral evidence. The framework was validated using untargeted LC-HRMS analysis of urine samples. LC-MS database directly annotated 566 metabolites, and the integration with SGMNS expanded the total number of annotations to 2078. The LLM-driven database construction combined with the dual-strategy annotation framework provides a powerful paradigm for achieving high-coverage and high-accuracy dietary metabolomics.
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RSC Advances
·
2026
·
IF 6.1
Ling-Feng Zou,Zi-Sheng Chao,Tao Xiang,Fen Wu,An Li
Nitrate pollution in water necessitates efficient catalytic solutions for its conversion into harmless or valuable products. In this work, a molybdenum-promoted nickel–aluminum alloy (NAMCat) catalyst via alkaline leaching for the hydrogenation reduction of nitrate to N 2 and NH 3 was developed. The catalyst achieves over 99% nitrate conversion with brilliant product selectivity of N 2 /NH 3 under mild conditions. The characterization results revealed that Mo doping critically induces a sponge-like porous architecture and fosters synergistic Ni–Mo active sites, which collectively enhance mass transport, hydrogen activation and reaction kinetics. The catalyst also demonstrates remarkable stability, recyclability, and tolerance to common interfering ions. A reaction mechanism based on the porous and electronic structure of NAMCat was also proposed. This work provides a cost-effective, non-noble-metal catalyst strategy for simultaneous nitrate remediation and nitrogen resource recovery. A molybdenum-promoted Ni–Al alloy catalyst was developed for highly-efficient nitrate hydrogenation to N 2 /NH 3 . It achieved >99% conversion with remarkable stability, recyclability, and tolerance to common interfering ions.
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