Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 2
·121282
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IF 7.2
Zijian Zhang,Bonan Liu,Li Yang,Jingwen Wang,Yuqing Dong,Chao Tang,Ping Wang,Haijiao Xie,Lei Zhang,Lu Zhang,Jun Zhao,Yu Fan,Wangjing Ma
Polystyrene (PS) waste recycling remains a critical challenge due to its high energy consumption and limited monomer yield. Herein, the b-ZnO catalyst with a few in-situ formed Zn sites at 270 °C under microwaves enhances the depolymerization of PS waste into monomers. To further improve the PS depolymerization over the b-ZnO catalyst, a series of Zn/b-ZnO catalysts with different metal Zn contents were prepared. Among these catalysts, the optimal 5Zn/b-ZnO achieves nearly 100 wt% PS conversion, yielding up to 0.997 g −1 PS liquid products with 0.8 g −1 PS styrene monomer in five cycles of experiment under microwaves. Such process greatly reduces the energy cost as compared with the conventional thermal process (0.51 vs. 0.81 kWh) and the obtained styrene monomer mixture can be repolymerized into fresh PS to complete a closed-loop recovery (80 wt% PS waste recycled). This work builds a novel microwave-assisted Zn/b-ZnO catalyst system for depolymerizing PS waste into monomers in a highly efficient way, which sheds a light on the sustainable recovery of PS waste.
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RSC Advances
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2026
·Vol. 16
·期 4
·3409
·
IF 4.6
Ya Huang,Yanwen Zhuang,Miao Zhu,Yangfan Zhou,Miaowen Xu,Zixun Wang,Jingwen Zhu,Jinxin Sheng
Early identification and timely intervention of precancerous lesions of gastric cancer are the core strategies to block their malignant transformation into gastric cancer (GC). This study developed a dual functional sensor that combined surface-enhanced Raman scattering (SERS) activity and nanoenzyme catalytic properties. The sensor was driven by catalytic hairpin self-assembly (CHA) technology triggered by the target microRNA-21 (miR-21), promoting the conversion of 3,3′,5,5′-tetramethylbenzidine (TMB) and signal amplification of TMB oxidation (ox-TMB). This work used Au–platinum nanoparticles (Au–Pt NPs) as nanozyme probes and silica-encapsulated ferrite (Fe 3 O 4 @SiO 2 ) as capture probes. In the presence of target miR-21, CHA technology induced Au–Pt NPs to assemble on the Fe 3 O 4 @SiO 2 surface, endowing the sensor with SERS enhancement capability and peroxidase-like (POD-like) simulated catalytic performance. This catalyzed the conversion of TMB and hydrogen peroxide (H 2 O 2 ) into the oxidized product ox-TMB with characteristic absorption. CHA technology, acting as an intrinsic driving force for sensor assembly, further facilitated exponential amplification of the ox-TMB detection signal. This SERS sensor demonstrated outstanding detection performance, achieving a detection limit as low as 20.24 aM for miR-21. It also exhibited excellent clinical applicability and accuracy in clinical sample testing. Therefore, the proposed SERS sensor holds significant clinical potential for diagnosing gastric precancerous lesions. Early identification and timely intervention of precancerous lesions of gastric cancer are the core strategies to block their malignant transformation into gastric cancer (GC).
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RARE METALS
·
2026
·
IF 11
Hao Liang,Yu Liang,Rubiao Qiu,Kunpeng Duan,Jiaxiao Li,Yan Liu,Xiaowen Li,Li Wang,Lingling Liang,Mingyang Jiang,Chenxi Wang,Guojiang Chen,Ming Gao,Xiaojie Li,Tao Qin
en Periodontitis is a chronic infectious oral disease triggered by periodontopathogenic bacteria, resulting in the progressive inflammation and destruction of the tissues surrounding teeth. To achieve reprogramming of the infectious microenvironment for periodontitis therapy, a nanoformulation was proposed by loading polydopamine (PDA) with ultrasmall strontium through in situ reduction and arginine by Michael addition, defined as PA. Combined with near infrared (NIR) irradiation, it could efficiently scavenge reactive oxygen species (ROS), and downregulate inflammatory factors expression through inhibiting NF-κB pathway. In addition, it also confirmed the effective bacteria killing in NIR stimulated PA by photothermal effects and nitric oxide (NO) generation. Significantly, PA + NIR was also verified to promote alveolar bone tissue repair through strontium ions (Sr 2+ ) and NO induced angiogenesis, together with Sr 2+ mediated osteogenesis. The administration strategy was finally verified to alleviate the oxidative stress derived inflammation, suppress bacterial growth and biofilm formation, as well as promote bone regeneration with high efficacy and biosafety in the periodontitis rat models. All the above findings contributed to the NIR enhanced synergistic treatment of periodontitis, and it may serve as a promising strategy for the treatment of other inflammation related diseases. 摘要 zh 牙周炎是由牙周病原菌引发的慢性感染口腔疾病,导致牙齿周围组织形成炎症和发生损坏。为了重塑感染微环境实现牙周炎治疗,在聚多巴胺(PDA)通过原位还原负载超小锶,以及通过迈克尔加成负载精氨酸,得到一种纳米制剂,命名为为PA。结合近红外(NIR)照射,它能有效清除活性氧(ROS),以及通过抑制 NF-κB通路下调炎症因子表达。此外,还证实PA + NIR通过光热效应和一氧化氮(NO)生成有效杀灭细菌。更重要的是, PA + NIR 还通过锶离子(Sr 2+ )和NO诱导血管生成以及Sr 2+ 介导的促成骨,促进牙槽骨组织修复。最后证明该给药策略可减轻由氧化应激引起炎症,抑制细菌生长和生物膜形成,并促进骨再生。上述所有发现都有助于实现近红外增强牙周炎协同增效治疗,并可能为其他炎症相关疾病治疗提供有前景策略。
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LANGMUIR
·
2026
·
IF 3.9
Kefeng Wang,Jingtao Hu,Yutong Chen,Zhitao Yin,Jian Chao,Yan Xu
The uncontrollable drug release rate and insufficient mechanical properties of aerogel scaffolds posed key challenges for their application in bone tissue engineering. This study proposed a multifunctional smart aerogel scaffold integrating electrospinning and direct ink writing (DIW) technology, combining sustained drug release with external magnetic field stimulation. Rifampicin-loaded PLA/PCL electrospun short fibers were embedded within the aerogel matrix, constructing a (n-HA/CNFs/PVA/Fe3O4@SF) composite aerogel scaffold with microarchitectural features mimicking the extracellular matrix and controlled drug release functionality. The incorporation of short fibers significantly mitigated rifampicin release rates while substantially enhancing the mechanical properties of the aerogel scaffold. Furthermore, under non-contact alternating magnetic field stimulation, the scaffold maintained a localized temperature of 42 °C, enabling on-demand accelerated drug release and localized magnetotherapeutic effects, thereby overcoming the limitations of traditional drug delivery systems. By integration of macro-scale precision 3D-printing technology, microscale electrospinning structure construction, short-fiber sustained-release mechanisms, and dynamic alternating magnetic field regulation, this composite scaffold offered a novel strategy for intelligent, precision treatment of bone tuberculosis (BTB).
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JOURNAL OF CHROMATOGRAPHY A
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2026
·
IF 4
Shuo Wang,Yiming Gu,Jin Zhou,Shudong Wang
In modern liquid chromatography, versatile mixed-mode stationary phases have emerged as a practical choice for complex separations. Glucamine is promising in this field due to its distinctive amino-substituted glucose structure. This work presents a novel alkyl glucamine-based stationary phase (SIL–GNOGA) prepared via an epoxide-amine ring-opening reaction and immobilized onto silica surfaces. The morphology and composition of the stationary phase were characterized by multiple analytical techniques. Its retention mechanism was systematically investigated using analytes with diverse properties under varied chromatographic conditions. Furthermore, the separation performance of SIL–GNOGA was assessed and compared against its alkylamine- and glucamine-based counterparts. The stationary phase demonstrated excellent versatility, enabling efficient separation of hydrophilic, hydrophobic, as well as amphiphilic analytes in hydrophilic interaction or reversed-phase mode, depending on their molecular characteristics. Notably, complex mixtures were successfully resolved in both modes through the synergistic effects of hydrophilic, hydrophobic, hydrogen-bonding, and electrostatic interactions. This mixed-mode capability highlights SIL–GNOGA’s broad selectivity and potential across diverse chromatographic applications.
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FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8
Huanhuan Su,Hao An,Jianzhi Yang,Khizar Hayat,Ahmad Mohammad Salamatullah,Teng Li,Yuying Fu,Yun Zhai
Iron oxide nanoparticles are utilized as a novel iron supplement due to their low irritancy and high bioavailability. In this study, FeCl 2 ·4H 2 O and FeCl 3 ·6H 2 O (3,1, 2,1, 1,1, 1,2, and 1:3) were dissolved in a whey protein isolate amyloid fibrils (WPF) solution, followed by reaction under alkaline conditions at 60 °C for 50 min to form an iron oxide-WPF complex (Fe-WPF) with high bioavailability. The WPF binds to iron oxide via van der Waals forces, and iron oxide predominantly existing in the ferrous state. And, in vitro digestion indicated that the fibril of the Fe-WPF remained intact and the release of free Fe 2+ was only 2.0 μg/mL, which effectively increased the bioavailability of iron and reduced the irritation of Fe 2+ to the gastrointestinal mucosa. Fe-WPF prepared at a 1:1 ratio of FeCl 2 ·4H 2 O and FeCl 3 ·6H 2 O exhibits better bioavailability than FeSO 4 in vitro without observable cytotoxicity. Therefore, the Fe-WPF composite can become a novel iron oxide delivery system with high loading capacity and bioavailability.
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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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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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危险品化学品经营许可证（带存储）