JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
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2026
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IF 4.1
Yu Wang,Qiushuo Cheng,Ting Zhang,Lei Lü,Haixia Ma
The pyrolysis of energetic materials (EMs) directly determines their combustion performance and energy release efficiency. This study designed a potassium-doped maghemite (KF) catalyst with sea urchin-like structure. Traditional lead-based catalyst could cause serious environmental pollution, whereas KF may offer dual advantages of flame suppression and high catalytic activity. Electron paramagnetic resonance (EPR) spectroscopy demonstrate the increased defect concentration compared with commercial γ-Fe 2 O 3 and α-Fe 2 O 3 . The as-prepared KF catalyst provides more surface active sites, significantly enhancing its catalytic performance for the thermal decomposition of hexanitrohexaazaisowurtzitane (CL-20). Graphene oxide (GO) always acts as a stabilizer for EMs due to the excellent mechanical properties. Hence, K-γ-Fe 2 O 3 /reduced graphene oxide (KFG) was prepared via the one-step solvothermal method. Experimental results show that the ternary KFG composite can lower both the initial decomposition temperature and the apparent activation energy of CL-20. KFG accelerates the decomposition process of CL-20 and narrows the distribution of gaseous products. This study reveals the synergistic mechanism among potassium, γ-Fe 2 O 3 , and graphene, providing new design strategy and theoretical foundation for highly efficient combustion catalysts applied in solid propellants.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 9
·635
·
IF 5.4
Wang Yu,Zhang Shumin,Shi Jiale,Wang Yuetong,Mao Yexuan,Dang Meng,Huang Xianqing,Song Lianjun,Zhang Xiya,Bu Tong
A novel fluorescent lateral flow assay (FLFA) based on a zirconium-based metal aggregation-induced emission luminogen framework (Zr-MAF) is reported for the highly sensitive detection of zearalenone (ZEN) in cereals. A carambola-like Zr-MAF with a high fluorescence quantum yield of 36.9% was synthesized via a hydrothermal method using Zr 4+ and 1,1,2,2-tetra(4-carboxylphenyl) ethylene (TCPE). The prepared Zr-MAF-labeled monoclonal antibody probe exhibited intense luminescence, robust stability, and high affinity toward ZEN, collectively contributing to a significant enhancement in detection sensitivity. Under optimal conditions, the Zr-MAF-FLFA achieved an ultralow detection limit (IC 10 = 0.014 ng/mL) and a sensitivity (IC 50 ) of 0.046 ng/mL, representing a 2.6-fold improvement over traditional gold nanoparticles-based FLFA. Notably, the assay exhibited significant cross-reactivity only with the ZEN homologues α-ZAL, β-ZAL, and β-ZOL, which shared similar electrostatic potentials and substantial 2D molecular similarities with ZEN. Furthermore, the proposed method was successfully applied to real food matrices, including flour, glutinous rice, sweet corn, and glutinous corn, yielding satisfactory recoveries ranging from 85.37% to 106.42%. With detection limits in these food samples (0.68-0.78 µg/kg) falling well below national regulatory limits, this work provides a robust analytical platform for trace mycotoxin monitoring in food safety. Graphical abstract
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IRANIAN POLYMER JOURNAL
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2026
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IF 2.9
Fu Xingqin,Li Tiantian,Fu Wei,Wang Yongji,Wang Liangying,Hao Chengwei,Jin Juncheng
Antibiotic residues have drawn global attention due to its potential risks of drug resistance, allergic reactions and cancer induction. Developing highly sensitive and efficient adsorbents for the detection and adsorption of antibiotics is significantly important. Hence, a novel quantum carbon dots-doped hydrogel (CQDs-DAH) using methacryloyloxyethyltrimethyl ammonium chloride (DMC), acrylamide (AM) and carbon quantum dots (CQDs) was prepared for simultaneous detection and adsorption of sulfisoxazole (SSX). The morphological structure and chemical composition of CQDs-DAH were thoroughly characterized. Remarkably, the hydrogel exhibited excellent selectivity and sensitivity toward SSX, achieving a low detection limit of 3.5 × 10 −4 mg/L and a linear detection range of 0–0.385 mg/L. Additionally, CQDs-DAH demonstrated exceptional adsorption performance in a solution with an initial SSX concentration of 50 mg/L, with a maximum capacity of 36.46 mg/g within just 20 min, following the Temkin isotherm and pseudo-second-order kinetic model. Thermodynamic analysis further revealed that the adsorption process was endothermic in nature. Furthermore, the mechanism underlying the adsorption and detection of SSX by CQDs-DAH was elucidated. CQDs-DAH offered a combination of rapid kinetics, high sensitivity, and dual functionality. This study provides valuable insights into the production of multifunctional adsorbents for the sensitive detection and efficient adsorption of SSX.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
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IF 4.1
Wei Ruxia,Sheng Wei,Chen Shengyu,Zheng Yiwei,Li Xu,Feng Na,Luo Yanni,Tan Xuecai,Huang Ke-Jing
The development of highly sensitive and selective platforms for trace Zn 2+ detection is crucial for environmental monitoring and biomedical diagnostics. Herein, a photoelectrochemical (PEC) sensor was constructed using an L-cysteine (L-Cys)-functionalized BiOBr composite, in which surface-interface engineering was adopted to enrich available recognition sites and modulate the interfacial PEC response. Compared with pristine BiOBr, the incorporation of L-Cys introduces abundant Zn 2+ binding functional groups and modifies the local surface environment of BiOBr, thereby enhancing the photocurrent response and enabling the selective recognition of Zn 2+ . The sensor operates through a signal-off mechanism, in which the coordination of Zn 2+ with surface-bound L-Cys forms an interfacial coordination layer that partially hinders mass transport and interfacial charge transfer, resulting in a decrease in photocurrent. Under optimized conditions, the platform exhibits a wide linear response ranging from 0.5 to 40 nmol/L, with a low detection limit of 2.69 nmol/L ( S / N = 3). Furthermore, the applicability of the sensor is validated in real-world scenarios, demonstrating excellent recoveries in tap water, lake water, and complex biological matrices such as HepG2 cell lysates (recoveries, 96.3–108.5%). This work provides a robust strategy for engineering bio-semiconductor interfaces for the detection of essential metal ions in complicated samples.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Dongyang Ye,Min Gong,Liancong Yue,Hejinglong Zhang,You Wu,Sen Kang,Zhen Wu,Liang Zhang,Xiang Lin,Fengxian Gao,Dongrui Wang
Developing flexible bioelectronics that seamlessly integrate with human skin requires materials that are not only soft and conductive but also biocompatible and sustainable. Silk fibroin (SF), a natural protein with inherent biocompatibility and hierarchical structure, holds promise for such applications, yet its mechanical properties are mismatched with soft biological tissues, and it lacks intrinsic conductivity, limiting its standalone use. Inspired by nature’s use of Ca2+ for both structural reinforcement and signal transduction, we report a green supramolecular hydrogel built upon SF as the core component, combined with poly(vinyl alcohol) (PVA) and Ca2+ via a one-step freeze–thaw method. Density functional theory (DFT) calculations confirm that the three components engage in extensive noncovalent interactions, including hydrogen bonding, ionic coordination, and van der Waals forces, collectively constructing a stable yet dynamic cross-linked network. Within this network, Ca2+ functions both as a dynamic cross-linker to enhance mechanical properties and as a charge carrier to enable ionic conduction. The resulting hydrogel exhibits an exceptional combination of skin-like mechanical properties, with a Young’s modulus of 0.114 MPa, a tensile strength of 0.408 MPa, and an elongation at break of 407%. It also features a high ionic conductivity of 2.330 S/m, rapid self-healing, broad adhesion to diverse substrates, and excellent biocompatibility, with cell viability exceeding 80% at concentrations of 0.78–25 mg/mL. When employed as a flexible electrode, the hydrogel enables high-fidelity, real-time monitoring of human electrocardiogram and electromyogram signals, with signal intensity closely correlated to physiological activity. This work presents a bioinspired strategy for developing high-performance and biocompatible sensing materials, advancing the frontier of wearable health monitoring and human–machine interfaces.
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ACS Photonics
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2026
·
IF 6
Shuangyifei Liu,Yujie Cao,Huiying Ma,Chong Geng,Shu Xu
Colloidal zinc oxide quantum dots (ZnO CQDs) are key material for solution-processed optoelectronics, but their performance is severely limited by high intrinsic defect densities. Here, we report a low-temperature organometallic synthesis approach that achieves layer-by-layer growth of low-defect ZnO CQDs through cyclic amidation reactions. This method enables precise control over growth kinetics, yielding ZnO and ZnO: Al CQDs with strong excitonic UV emission and near-complete suppression of deep-level defect emission. When implemented in UV photodetectors, these low-defect CQDs deliver devices with ultralow dark current, responsivity of 5 A·W–1, subsecond response times, and a high detectivity of 2.6 × 1013 Jones, outperforming conventional ZnO CQD-based devices. This work provides critical insights into the design and synthesis of low-defect, size-controlled ZnO CQDs, paving the way for their application in optoelectronic devices.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Chengjie Sun,Yixin Luo,Mo Qiu,Qingxin Guan,Ruitong Ma,Zilu Zhang,Feng Shen,Shizhou Shen,Jirui Yang,Wei Li
Insufficient synergy between hydrolysis and hydrogenation seriously hinders the efficient conversion of insoluble cellulose in biomass utilization. Herein, using tobacco straw-derived lignin to prepare ordered mesoporous carbon (OMC), we report a complex-mediated strategy for constructing a Ni–P–O@NixP/OMC catalyst with tailored P–C–O doped sites and Niδ+–P–Oδ− frustrated Lewis pairs (FLPs). Characterizations and DFT results indicate that the P–C–O sites in a P/O-doped OMC support promote H2O adsorption and polarization, accelerating H3O+ generation for enhanced cellulose hydrolysis. Simultaneously, the Niδ+–P–Oδ− FLPs on the NixP surface promote H2 heterolysis and H2O dissociation, generating highly active Hδ+/Hδ– and H3O+ species that synergistically enhance hydrolysis and hydrogenation. Benefiting from the spatial coupling of hydrolysis and hydrogenation at the atomic scale, the prepared catalyst achieves an 80% sorbitol yield from cellulose in water at a low Ni loading of 4.5 wt %, along with satisfactory cycling stability. Increasing the Ni content to 8.0 wt % further raises the sorbitol yield to 89.5%, outperforming most reported noble-metal-based catalysts. Finally, a sorbitol yield in excess of 90% is obtained by using the residue after lignin extraction as the substrate. This work establishes a design paradigm for efficient cascade biomass conversion by creating atomic-scale P–C–O sites and Niδ+–P–Oδ− FLPs that enable spatially coupled hydrolysis and hydrogenation through tailored electronic structures.
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JOURNAL OF MATERIALS SCIENCE
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2026
·
IF 4.4
Zhang Han,Xu Chun,Xu Meng,Yuan Yan,Liu Jie,Dong Yanmao,Jiang Li
Self-healing anticorrosive coatings are essential for extending the lifespan of metallic materials in aggressive environments. This study presents a novel sandwich-structured coating composed of a polydopamine (PDA) inner layer, a ZIF-67 electroplated interlayer, and MXene/CNTs fillers incorporated into a waterborne acrylic epoxy (EA) matrix. The PDA layer enhances adhesion, while the ZIF-67 interlayer functions as an active inhibitor reservoir that responds to pH changes, releasing Co 2+ and 2-methylimidazole to promote defect repassivation and self-healing. The outer MXene/CNTs layer significantly improves barrier properties by forming a tortuous path for corrosive agents and enhancing interfacial stability. Compared with single-component coatings, the sandwich-structured composite coating exhibited markedly enhanced corrosion resistance in harsh acidic environment, with an obvious increase in corrosion potential. Moreover, a high R ct value of 1.79 × 10 5 Ω cm 2 was maintained by this coating even after 30 days of service, evidencing its durable protection. Under scratched conditions, the coating exhibits efficient self-healing, recovering its impedance and repassivating defects. This work demonstrates the synergistic benefits of the PDA/ZIF-67/MXene system, offering an effective solution for long-term corrosion protection with self-healing properties, suitable for various engineering applications.
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JOURNAL OF ELECTRONIC MATERIALS
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2026
·
IF 2.8
Zhang Fan,Zhang Jinshun,Li Xu,Wang Qingji
Polyaniline (PANI) is regarded as a prospective sensing material for room-temperature NH 3 detection owing to its high sensitivity and selectivity. In this study, WO 3 nanoflowers were prepared via a simple chemical bath deposition method, and PANI/WO 3 heterojunctions were subsequently fabricated through an in situ polymerization process. To evaluate the contribution of the heterojunction to gas-sensing performance, four sensors with different composite ratios were constructed. Among them, the optimized PW1-2 sensor exhibits a response of 3.8–100 ppm NH 3 at room temperature, which is 1.6 times higher than that of pure PANI. Notably, it achieves an ultrafast response time of only 26 s, representing an 8.8-fold improvement over pure PANI (230 s), along with near-complete desorption capability. Furthermore, PW1-2 demonstrates excellent humidity resistance, with stable responses ranging from 3.7 to 3.97 under 40–80% relative humidity. Comprehensive characterization by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy TEM, x-ray photoelectron spectroscopy (XPS), Raman spectroscopy, thermogravimetric analysis (TGA), and Brunauer–Emmett–Teller (BET) analysis reveals that PANI nanofibers uniformly wrap around WO 3 nanoflowers, forming p–n heterojunctions at the interface. XPS analysis shows that PW1-2 possesses the highest protonation degree (51.88%), which correlates with its superior sensing performance. Unlike conventional PANI/WO 3 composites, the enhanced performance is not primarily attributed to specific surface area or porosity but rather to the synergistic effect of morphological characteristics and heterojunction formation. Compared with previously reported PANI/WO 3 sensors, our PW1-2 sensor offers significantly faster response, better humidity tolerance, and complete desorption. This work provides a promising strategy for designing high-performance, humidity-resistant room-temperature NH 3 sensors. Graphical
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 19
·1466
·
IF 3.2
Valabhoju Madhuker,Pothukanuri Nagaraju,Kathirvelu Velavan,Parne Saidi Reddy
Titanium-based metal–organic frameworks (Ti-BDC MOFs) were synthesized via a solvothermal route at different temperatures ranging from 110 to 170 °C using terephthalic acid as the organic linker. The synthesized samples were systematically characterized using X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV–Vis), Brunauer–Emmett–Teller (BET) surface area analysis, and thermogravimetric analysis (TGA) to investigate their structural, morphological, optical, and thermal properties. X-ray diffraction (XRD) studies revealed temperature-dependent variations in crystallinity and phase evolution, while FESEM analysis demonstrated significant morphological transformations with increasing synthesis temperature. EDX confirmed the presence of Ti, O, and C elements, validating the successful formation of the Ti-BDC framework. FTIR spectra verified the coordination between Ti metal centers and BDC linkers, whereas TGA indicated good thermal stability with framework integrity maintained up to approximately 280 °C. Ultraviolet–visible studies were employed to determine the optical band gap, and BET analysis revealed the microporous and hierarchical porous nature of the synthesized materials. Gas sensing characteristics toward n-butanol were evaluated under ambient conditions using the static liquid distribution method. Among all samples, the Ti-BDC MOF synthesized at 150 °C exhibited the best sensing performance toward 5 ppm n-butanol, showing superior response–recovery behavior, excellent selectivity, and long-term stability, with a limit of detection (LOD) of 2.66 ppm. The enhanced sensing performance is attributed to the optimized crystallinity, porous architecture, and abundant active adsorption sites that facilitate efficient gas diffusion and charge transfer processes. These findings demonstrate the potential of Ti-BDC MOFs as promising sensing materials for low-concentration n-butanol detection in environmental monitoring and workplace safety applications.
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JOURNAL OF MATERIALS SCIENCE
·
2026
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IF 4.4
Yang Shengdu,Meng Yuchan,Chen Ding,Sun Xin,Zhao Xiaohai
Stereo-complexed poly(lactic acid) (PLA) membranes are highly attractive for sustainable applications, yet achieving a synergy between mechanical strength and superhydrophobicity remains a significant challenge. Herein, a hierarchical crystallization strategy was developed to fabricate high-performance stereo-complexed PLLA/PDLA/ZnO porous composite membranes by integrating methacryloxypropyltrimethoxysilane (MPS)-modified ZnO nanoparticles (NPs). By optimizing the MPS-ZnO content within a 9:1 PLLA/PDLA blending matrix, a remarkable 182% increase in tensile strength (from 2.14 to 6.05 MPa) was achieved, while simultaneously attaining stable superhydrophobicity with a water contact angle of 155.4°. Both differential scanning calorimetry (DSC) and X-ray diffraction (XRD) results revealed that MPS-ZnO NPs function as efficient heterogeneous nucleating agents, significantly enhancing stereo-complex (SC) crystallization. Crucially, a “dual-directional traction force” was proposed as a possible mechanism at the molecular level, i.e., the concurrent growth of SC and HC (homo-crystallization) phases induces a confined, oriented crystalline state in the intermediate polymer chains. This unique structure assumption effectively establishes potential correlations in the connection between varying crystalline phases. Furthermore, the composite membranes displayed improved thermal insulation, with thermal conductivity decreasing to 0.055.6 W m −1 K −1 due to enhanced phonon scattering at the complex hierarchical interfaces. This work provides a versatile approach for designing biodegradable functional membranes with superior structural integrity and tailored surface properties for advanced filtration and insulation. Graphical
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RSC Advances
·
2026
·
IF 6.1
Zhenhua Zeng,Ayang Wu,Haimin Gao,Yanping Zheng,Huicong Yang,Xiaojie Yao,Zhongjie Yang
MicroRNAs (miRNAs) are important liquid biopsy biomarkers, and their multiplex detection is highly important for the early screening of hepatocellular carcinoma. This work developed a CRISPR/Cas13a biosensing platform based on near-infrared (NIR) light and glutathione (GSH) dual activation for highly sensitive and specific determination of miRNA-21, miRNA-155, and miRNA-224. The advantages of this platform lie in the introduction of GSH-responsive mesoporous silica carriers and photolytic linkers (pc-linkers), which transform the sensing process from “passive triggering” to “controllable activation”, effectively suppressing nonspecific signals. Specifically, GSH can degrade mSiO 2 with tetrasulfide bonds, thereby degrading the carrier. It will release the CRISPR/Cas13a system loaded on the carrier, thereby achieving specific recognition and cleavage of miRNA-21/155; at the same time, 808 nm NIR light excites upconversion nanoparticles (UCNPs) to generate ultraviolet light, which cleaves the pc-linker to activate the detection of miRNA-224. The detection limits of the developed assay for detecting miRNA-21, miRNA-155, and miRNA-224 were 4.2 pM, 5.7 pM, and 0.205 nM, respectively. The recoveries in the serum spiked experiments were 98.97–109.24%, with a relative standard deviation of less than 4.613%, indicating that the method has good accuracy and reliability. This work proposes a novel and reliable strategy for detecting multiple miRNAs in complex biological samples. MicroRNAs (miRNAs) are important liquid biopsy biomarkers, and their multiplex detection is highly important for the early screening of hepatocellular carcinoma.
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PubMed
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