ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Ao Wang,Qianqian Ding,Jiahao Mou,Hongbin Qi,Jiazhi Yang,Urol K. Makhmanov,A. V. Rogachev,Xiaohong Jiang
Plastic pollution has emerged as a critical global environmental challenge, posing substantial risks to ecosystems’ stability, biodiversity conservation, and public health protection. However, technique limitations persist in detecting and analyzing plastic particles within complex environmental matrices. This study introduces an ultrasensitive surface-enhanced Raman spectroscopy (SERS)-based method for detecting and precisely quantifying polystyrene (PS) plastic particles of various sizes in real-world aqueous samples. The developed SERS platform integrates urchin-like silver nanoparticles, generating high-density SERS hotspots, with a slippery polydimethylsiloxane (PDMS) brush surface for effective analyte enrichment. The synergistic combination achieves exceptional detection performance for dichloromethane (DCM)-dispersed polystyrene plastic particles across broad size ranges, demonstrating a remarkable detection limit of 2.57 × 10–5 mg/mL. The established quantitative relationship follows log I = 0.4501 log C + 4.1869 (R2 = 0.9899), confirming excellent analytical reliability. This advancement provides a robust analytical framework for environmental monitoring applications, particularly offering a novel approach for detecting microplastics (MPs) and nanoplastics (NPs) in real water samples.
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PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Yue Wang,Aofeng Yang,Lihao Xiong,Jiayi Song,Sihan Chen,Huang Zhou,Le Li,Deshuai Zhen
Uranium, a radioactive element, exists in aqueous environments primarily as uranyl ions (UO22+), posing significant risks to human health and the environment. Detecting UO22+ in such environments remains challenging. Here, an upconversion fluorescent sensor (UCDM) for the detection of UO22+ in an aqueous environment was constructed based on the fluorescence resonance energy transfer (FRET) principle. This sensor utilizes upconversion nanoparticles loaded with DNAzyme (UCDA) as energy donors and molybdenum disulfide (MoS2) as energy acceptors. MoS2 exhibits a high affinity for single-stranded DNA (ssDNA), enabling the sensor to function effectively. In the presence of UO22+, DNAzyme catalyzes substrate cleavage at the rA site, releasing ssDNA that binds to MoS2. This interaction leads to a decrease in UCDA upconversion luminescence. The unique upconversion luminescence property of an upconversion nanoparticle minimizes background autofluorescence, enhancing sensitivity. The sensor achieves a low detection limit of 5.81 nM and demonstrates robust recoveries (98.7%–102.7%) in complex aqueous matrices such as Xiangjiang water, uranium mine wastewater, human serum, and urine samples, underscoring its practical applicability.
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JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
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2025
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IF 3.6
Bin Li,Jianting Zhang,Zhiheng Wang,Chenyuan Li,Weihong Guo
Polybutylene adipate terephthalate (PBAT) has good flexibility and tear resistance, but when used as a film, it has problems such as low tensile strength and poor gas barrier properties. Blending polylactic acid (PLA) with PBAT can effectively compensate for the mechanical performance defects of PBAT. However, blending PBAT and PLA has compatibility issues, and the tensile strength and gas barrier properties of PBAT/PLA (TA) films are still relatively low. Halloysite nanotubes (HNT) are hollow tubular inorganic nanomaterials with high specific strength and stiffness. Incorporating them into polymers can enhance the mechanical properties and gas barrier properties of polymer films. However, HNT tends to agglomerate, necessitating surface modification to improve its poor dispersibility in polymer matrices. In this study, to improve the mechanical properties and water vapor barrier properties of PBAT, PBAT and PLA were blended to prepare a TA blend, and HNT modified with 3-aminopropyl triethoxysilane (KH550) (HNT-NH 2 ) was introduced. A reactive compatibilizer ADR4468 was used to enhance the compatibility between the components. TA/ADR/HNT-NH 2 nano-composite films were prepared. The tensile strength (TS), elongation at break (EB), and water vapor permeability coefficient of the film were optimized to 41.28 MPa, 764%, and 15.6 × 10 −14 g·cm/(cm 2 ·s·Pa), respectively.
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Small
·
2025
·
IF 12.1
Zhenlong Liu,Jiayuan Zhang,Liping Jiang,Ruiyan Zheng,Zunyuan Xie,Jizhen Li,Guofang Zhang
Nanoconfined composites exhibit outstanding catalytic performance for the thermal decomposition of ammonium perchlorate (AP). However, it remains a formidable challenge to construct nanoconfined catalysts when the restricted species are insoluble precipitates that form rapidly at room temperature. Herein, a general precursor-based stepwise confined strategy is proposed to encapsulate M 3 [Fe(CN) 6 ] 2 ·xH 2 O (M-Fe-PBA) (M = Fe, Co, Ni, Cu, Zn) within N-doped hollow carbon nanospheres (NHCs), resulting in yolk-shell structured composites, M-Fe-PBA@NHCs. Catalytic tests reveal that 5 wt.% Co-Fe-PBA@NHCs show the highest catalytic activity among the M-Fe-PBA@NHCs composites, significantly lowering the high-temperature decomposition peak of AP and increasing its heat release. Electrochemical analysis confirms that fast electron transfer of Co-Fe-PBA@NHCs facilitates AP combustion. TGA-FTIR-MS measurements further elucidate an accelerated decomposition pathway. Density functional theory calculations indicate that NH 3 and O 2 released during AP degradation are preferentially adsorbed on the in situ formed Co 3 O 4 /CoFe 2 O 4 , promoting O 2 reduction to O 2 − species and facilitating the deeper oxidation of NH 3 into higher-valence NO 2 . Crucially, this confinement strategy enables the efficient incorporation of instantly formed insoluble species into any hollow host material with accessible voids, providing a versatile platform for the development of multifunctional nanoconfined catalysts and the rational design of high-performance confined catalysts with potential applications.
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PubMed
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Journal of Energy Storage
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2025
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IF 9.8
Gang Li,Ye Jin,Zhongjia Dai,Rui Jiang,Jinyu Zheng
The high nickel stoichiometry in Li[Ni 0.8 Co 0.1 Mn 0.1 ]O 2 (NCM811) cathode materials, while advantageous for specific capacity enhancement, introduces concomitant challenges including (i) surface instability due to high surface residual Li compounds (RLCs) content, and (ii) accelerated structural degradation and deleterious phase transitions during electrochemical cycling. To address these challenges, NCM811 was treated with an aqueous solution of ammonium niobium oxalate, which not only reduced the RLCs content on the surface, but also in-situ constructed a LiNbO 3 coating layer on the surface of the NCM811 materials after the re-calcination process. Within a potential range of 2.75–4.3 V at 0.5C and 25 °C, the Nb-modified NCM811 materials exhibit the advantages of improved specific capacity of 215.3 mAh g −1 and excellent capacity retention of 92.3 % after 200 cycles. This integrated approach synergistically combines wet coating with re-calcination treatment to achieve dual modification of NCM811 cathodes-simultaneously reducing RLCs while enabling in-situ construction of a lattice-doped LiNbO 3 coating layer, demonstrating exceptional potential for scalable industrial implementation through its combined performance enhancement and process compatibility.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shuting Wei,Dan Yang,Renquan Guan,Peng Xu,Yuxin Wang,Yingmin Teng,Aicen Li,Junkai Zhang,Huaqiao Tan,Lili Wang,Zheng Lou,Wenjuan Zhang,Zhao Zhao
Hydrogen chloride (HCl) gas is widely generated in industrial processes and poses significant risks to human health and ecosystems. Therefore, highly efficient and sensitive sensors are essential for its detection. Among existing HCl gas sensors, chemiresistive sensors based on metal oxide semiconductors (MOSs) have gained considerable interest owing to their structural simplicity, low cost, and ease of miniaturization. However, these sensors often suffer from limitations such as slow response, low selectivity, and high operating temperatures. In this study, we successfully synthesized gas-sensing materials enriched with crystal defects and bulk strain through high-pressure torsion (HPT) technology. These modifications provide additional active sites for gas adsorption and reaction, and induce crystal field distortion that tunes the electronic structure, ultimately enhancing the HCl sensing performance. The optimal sample, ZnO-300R 3/2 , exhibited a response value of 213.79 % toward 100 ppm HCl gas, which is 14.6 times higher than that of the pristine ZnO. Combining spectroscopic analysis with density functional theory (DFT) calculations, we clarified the synergistic mechanism between electronic band structure modulation and surface lattice oxygen activation. This work provides valuable insights for designing novel room-temperature gas sensors and promotes a deeper understanding of surface lattice oxygen-mediated sensing mechanisms.
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PHYSICA SCRIPTA
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2025
·Vol. 100
·期 10
·105607
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IF 2.6
Xiaolong Song,Yafang Pan,Shi Wang,Peng Wang,Mingli Wang
Compared with single-metal materials, bimetallic materials exhibit superior oxidation resistance and stability. The Surface-enhanced Raman Scattering (SERS) performance can be effectively modulated by adjusting the concentration of the precursors. Herein, Fe3O4@EDTA@Ag-Cu NPs were successfully synthesized, the SERS performance of the substrate was significantly enhanced by modulating the concentration of the silver and copper precursors. The results indicated that the SERS sample prepared by mixing the dispersion of Fe3O4@EDTA@Ag-Cu NPs with Rhodamine 6G(R6G) solution at a 1:2 volume ratio, achieved a detection concentration as low as (1.0 ± 0.2) × 10−10 M for R6G. Furthermore, the substrate demonstrated high sensitivity, uniformity, temporal stability, reproducibility, and the capability for the rapid detection of benzimidazole in strongly alkaline conditions.
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Applied Materials Today
·
2025
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IF 6.9
Jun Zeng,Tao Jia,Tong Chen,Huilin Liu,Zhaojie Sun,Xiaoyong Huang,Yunfei Shang,Shuwei Hao,Chunhui Yang
Cancer phototheranostics has emerged as a cornerstone of personalized precision medicine to achieve efficient and targeted tumor treatment. Upconversion nanoparticles (UCNPs)-mediated phototheranostics exhibited remarkable potential for imaging diagnostics and therapeutic applications. Nevertheless, integrating programmable photoactivation functions of imaging and therapy within a single UCNP with negligible phototoxicity remains a huge challenge, primarily due to the absence of precise photoswitching strategies. Herein, a pulse-responsive upconversion nanoagent (UCNA) is designed to enable imaging-guided precision phototherapy through tunable red/green emissions. The UCNA is constructed based on a UCNPs@mSiO 2 core–shell structure conjugated with photosensitizer (neutral red) and drug (curcumin), and gated by a β-cyclodextrin-adamantane (β-CD-AD) host–guest supramolecular complex. The red emission is utilized for determining the tumor area through fluorescence imaging under 980 nm laser irradiation with a long pulse width (LPW). By switching the laser duty cycle into a short pulse width (SPW) mode, the resultant green emission can active photosensitizer to produce cytotoxic singlet oxygen ( 1 O 2 ), and simultaneously trigger drug release for antitumor therapy. The results demonstrate the attractive performance of UCNP-mediated deep-tissue imaging and enhanced anti-tumor efficacy without obvious systemic toxicity. In general, this work provides a facile approach for tuning upconversion emission, thereby realizing the photoswitchable activation of imaging diagnostics and photodynamic therapeutics.
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APPLIED SURFACE SCIENCE
·
2025
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IF 6.9
Wenju Zhu,Shuolong Wang,Wei Peng,Shuang Xu,Jiarui Liu,Kai Ma,Yanyan Ji,Zhao Dai,Bowen Cheng
The research progress on the surface modification and flame retardancy of cotton fibers has been rapid. Driven by considerations of environmental safety and economic feasibility, bio-based flame retardants are favored for their eco-friendly and sustainable characteristics. This study successfully scaled up the preparation of a P/N-rich cottonseed meal-based flame retardant (PmC) − a functional material in which phosphate groups are chemically introduced into the natural components of cottonseed meal. The innovative mechanical grinding method refines solid biomass for application on the surface of cotton fibers. PmC integrates with cotton fibers through a flame-retardant finishing process, forming hydrogen bonds and covalent bonds between PmC and cotton fibers, thereby achieving durable wash resistance for flame-retardant cotton fibers. The limiting oxygen index (LOI) of 110 g/L PmC treated cotton fibers reaches 38.4 %, with a damage length of only 50 mm. Cone calorimetry tests revealed that the total heat release (THR) and peak heat release rate (pHRR) of PmC-treated cotton fibers were reduced by 38.7 % and 82.9 %, respectively. Comprehensive analysis using TG-IR, XPS of the residual char, SEM-EDS further indicated that PmC primarily exerts its flame-retardant effect by acting on the condensed phase of cotton fabrics.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Mengxin Liu,Haoran Zhang,Xinmeng Huang,Ziyi Zhang,Shulin Huang,Qihui Wen,Jintang Zhou,Lei Pan
With the rapid advancement of high-power electronics, developing advanced multifunctional electromagnetic interference (EMI) shielding materials that simultaneously realize high shielding effectiveness (SE), low reflection, and mechanical adaptability remains a critical challenge. This work presents a gravity-driven assembly strategy to construct asymmetric gradient structures by spatially distributing low-density MXene nanosheets@hollow Fe 3 O 4 nanospheres (MXene@HFO) and high-density silver-coated tetraneedle ZnO whiskers (T-ZnO@Ag) within a waterborne polyurethane (WPU) matrix. The self-organized Janus architecture optimizes impedance matching and enables a multiple “absorption-reflection-reabsorption” loss mechanism. The resulting composite film achieves absorption-dominated EMI shielding with an SE of 72.4 dB and an absorption coefficient ( A ) of 0.54. Notably, it also exhibits exceptional mechanical properties, including over 400% reversible stretchability, robust durability for 1000 cycles, and strain-responsive shielding tunability, addressing key limitations in practical applications. Moreover, the interconnected conductive network delivers rapid Joule heating (174°C in 30 s at 2.5 V) and high thermal conductivity (9.53 W m −1 K −1 ), enabling efficient thermal management. The proposed multifunctional film holds great promise for next-generation electronics requiring simultaneous EMI protection and thermal management, while the one-step fabrication methodology offers scalability advantages suitable for industrial production.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 29
·1-12
·
IF 2.8
Nurbolat Kuanysh,Wu Zhengwei
A nitrogen plasma-assisted surface engineering strategy was developed to functionalize carbon cloth (CC) and enhance the growth and distribution of Bi₂O₃ nanoparticles for supercapacitor applications. The plasma treatment introduced abundant nitrogen-containing functional groups and defect sites on the CC surface, which promoted uniform nucleation during the subsequent precipitation–calcination process. The resulting Bi₂O₃@NCC composite exhibited a high areal capacitance of 2788.7 mF cm⁻ 2 at 1 mA cm⁻ 2 and retained 64.2% of this value at 20 mA cm⁻ 2 . The electrode also demonstrated good cycling stability, with 80.1% capacitance retention after 5000 charge–discharge cycles. Electrochemical impedance spectroscopy (EIS) confirmed reduced charge transfer resistance and enhanced ion diffusion kinetics. This work demonstrates a practical and scalable plasma-assisted approach for improving both the performance and durability of carbon-based composite electrodes for energy storage applications.
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Journal of Energy Chemistry
·
2025
·
IF 14.9
Yu Mao,Mengyang Wang,Yuanyuan Huang,Yanmei Deng,Wenjian Chan,Ziyang Ren,Ening Gu,Sambasivam Sangaraju,Xianzhong Lin,Guowei Yang
The inkjet-printed Cu 2 ZnSn(S,Se) 4 (CZTSSe) has garnered extensive attention owing to its cost-effectiveness, high-throughput fabrication, and roll-to-roll compatibility. However, selenium volatility loss during high-temperature selenization induces detrimental defects in both the bulk and interface, limiting CZTSSe solar cell performance. Here, we develop a simple and controllable low-temperature selenium post-treatment (Se-LPT) strategy to compensate for the selenium loss. Systematic studies reveal that the Se-LPT can effectively passivate selenium vacancy deep-level defects in the CZTSSe absorber and suppresses carrier nonradiative recombination, thereby reducing the open-circuit voltage deficit from 336 to 298 mV. Furthermore, this treatment lowers the carrier transport barrier and facilitates efficient carrier transport by reducing the spike-like conduction band offset at the heterojunction interface. The enhanced carrier density and conductivity further contribute to the short-circuit current improvement. Consequently, the Se-LPT CZTSSe devices deliver an efficiency of 14.13%, representing the highest performance reported to date for inkjet-printed CZTSSe solar cells. This work demonstrates an effective route for developing cost-effective and high-efficiency CZTSSe photovoltaics.
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