MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Biaobiao Ge,Jie Huang,Qianmin Dong,Fen Yang,Mengmeng Wang,Pei Liang
This work reveals a novel SERS enhancement mechanism of “satellite” structure. • Stable and uniform L-Au@ZIF-67@S-Au NPs were synthesized by self-assembly method. • L-Au@ZIF-67@S-Au NPs substrates was prepared with an enhancement factor of 3.4 × 10 6 . • Determination of fenpropathrin in citrus peel, and its LOD reached 0.995 μg/L. A new hybrid substrate of core-satellite plasma MOF, namely L-au @ ZIF-67 @ S au NPs, was developed in this study. The substrate aims to improve SERS performance by combining the molecular trapping layer of ZIF-67 with double electromagnetic hot spots distributed on the inner surface and the outer surface. The interface self-assembly strategy was adopted to combine MOF with plasma nanostructures, thus combining excellent molecular adsorption ability with strong local field enhancement effect. The results showed that the substrate had a low detection limit of 1.43 × 10 −10 M for rhodamine 6G, achieved rapid adsorption equilibrium within 10 min, and showed high signal reproducibility (relative standard deviation, RSD = 1.66%, n = 20). The substrate was applied to the detection of fenpropathrin residues in citrus peels, showing good sensitivity, and the detection limit was 0.995 μg·L −1 , with an enhancement factor of 3.4 × 10 6 and excellent reproducibility. This work builds a multifunctional and environment-friendly SERS platform, which effectively combines advanced nano-material design with practical applications of food safety monitoring Download: Download high-res image (146KB) Download: Download full-size image
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Drug Delivery and Translational Research
·
2026
·
IF 6.9
Ran Fang,Chai Guihong
Pseudomonas aeruginosa (PA) biofilm-associated chronic lung infections pose a significant therapeutic challenge due to the limited penetration and efficacy of conventional antibiotics. In this study, we developed an innovative dry powder inhaler (DPI) formulation co-loading ciprofloxacin-encapsulated liposomes (CIP-Lips) and S-nitrosoglutathione (GSNO) using an ultrasonic spray-freeze-drying (USFD) technique. GSNO, a nitric oxide (NO) donor, promotes biofilm dispersion and induces bacterial phenotypic switching, thereby enhancing the accessibility of CIP-Lips to biofilm-embedded bacteria. Subsequently, CIP released from the liposomes exerts direct antibacterial activity. The combination of CIP-Lips and GSNO produces a synergistic “biofilm-disrupting and bactericidal” therapeutic effect, leading to effective biofilm eradication. The optimized DPI formulation exhibited satisfactory in vitro aerosol performance, with a fine particle fraction of 36.51 ± 0.49%, ensuring efficient lung deposition. In vitro evaluations further confirmed pronounced biofilm disruption and bactericidal efficacy. Furthermore, in a murine model of chronic pulmonary infection, the CIP-Lips/GSNO DPI significantly reduced the bacterial burden without observable systemic toxicity. This inhalable system represents a promising strategy for the treatment of PA biofilm-associated lung infections.
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ACTA PHYSICO-CHIMICA SINICA
·
2026
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IF 13.5
Yue Zhao,Jie Zhang,Mingcan Wu,Li Zhao,Anan Wang,Kezhen Qi
The conflict between high-efficiency algal inactivation and ecological safety represents a critical bottleneck in the photocatalytic control of harmful algal blooms (HABs). Conventional copper-based photocatalysts, although effective, often cause severe secondary pollution and aquatic toxicity. To address this trade-off, we constructed a biologically safe S-scheme heterojunction by covalently anchoring LaCoO 3 (LCO) octahedrons onto PTP-DABDT amide–imine functional polymers. Unambiguous spectroscopic evidence, including femtosecond transient absorption (fs-TA) spectroscopy and in-situ irradiated X-ray photoelectron spectroscopy (XPS), confirms the formation of an internal electric field (IEF). This field drives ultrafast S-scheme charge transfer, effectively suppressing charge-carrier recombination while preserving strong redox potentials. Consequently, the optimized 20LCO/PTP-DABDT composite exhibits a remarkable “Kill-and-Clean” effect, achieving 64.39% degradation of chlorophyll-a in Microcystis aeruginosa to suppress algal blooms while simultaneously degrading the released microcystins. More importantly, comparative toxicity analysis reveals a paradigm shift: unlike conventional Cu-based algicides, which induce 100% mortality in non-target organisms ( Lateolabrax japonicus ), our system maintains a survival rate exceeding 90%. This study presents a pioneering “ecological regulation” strategy, offering a sustainable solution that balances efficient algal inactivation with intrinsic environmental biosafety. A LaCoO 3 /PTP-DABDT S-scheme heterojunction was developed for photocatalytic algal control, achieving 64.39% chlorophyll-a degradation and microcystin removal, while maintaining > 90% fish survival, thus balancing efficiency with ecological safety. Download: Download high-res image (418KB) Download: Download full-size image
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ANALYTICA CHIMICA ACTA
·
2026
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IF 6.1
Xiaodong Cao,Mingli Liu,Yifei Pan,Qiuran Wang,Jinying Gong,Yongkang Ye,Yuhan Sun,Zhaojun Wei
Sensitive and simultaneous detection of multiple foodborne pathogens has become an urgent need in the food industry. This work presents a signal-on fluorescence biosensor using DNA-templated metal nanoclusters as signal nanotags and an Exonuclease III (Exo III)-assisted target-recycling (EATR) strategy for the detection of Cronobacter sakazakii ( C. sakazakii ) and Salmonella typhimurium ( S. typhimurium ). The detection system consists of carboxylated polypyrrole nanoparticles functionalized with hairpin DNA sequences HP1 and HP2 (HP1-cPPy-HP2 NPs), the target ompA gene (tDNA1) of C. sakazakii and invA gene (tDNA2) of S. typhimurium , DNA-templated gold and silver nanocluster nanotags (sDNA1-AuNCs and sDNA2-AgNCs), and Exo III. In the presence of the targets, HP1 and HP2 on cPPy surface are opened through hybridization, forming tDNA1-HP1-cPPy-HP2-tDNA2 complex. These opened HP1 and HP2 then hybridize with their respective sDNA1 (sDNA1-AuNCs) and sDNA2 (sDNA2-AgNCs), leading to the increased fluorescence intensity of both AuNCs and AgNCs in the detection system. Furthermore, with EATR amplification strategy, the targets can be released from the complex through cleavage by Exo III and proceed to the next cycle of HP1/HP2 opening. As a result, the fluorescence signals of AuNCs and AgNCs can be significantly increased. Under optimal conditions, the fluorescence biosensor shows wide linear ranges for C. sakazakii (1.64 ∼ 1.64×10 5 CFU mL −1 ) and S. typhimurium (2.56 ∼ 2.56×10 5 CFU mL −1 ), with LODs of 1.4 CFU mL −1 and 2.2 CFU mL −1 , respectively. The biosensor was used for the detection of C. sakazakii and S. typhimurium in real samples, with recovery ranges of 88.8% to 110.6% and 90.4% to 114.4%, respectively.
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MACROMOLECULAR CHEMISTRY AND PHYSICS
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2025
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IF 2.7
Zhigeng Chen,Siqi Lin,Yan Li,Zhenxun Huang
Poly(ester-imide)s (PEIs) are well-known for their ultralow dissipation factor (D f ) of 0.003 at 10 GHz recently. However, the dielectric constant (D k ) and D f seem to be two difficult-to-reconcile indexes in PEIs, a relatively high D k of 3.2 confines the insulating capability of PEIs, owing to the trade-off between the polymer's free volume and rigidity. To address this difficulty, a cross-linking strategy of polymer backbones is proposed to increase the free volume and maintain a rigid structure in PEIs. In this research, the crystallinity of a liquid-crystal-like PEI is gradually diminished, and the molecular chain spacing is slightly enlarged as the degree of cross-linking increases. Besides, the degree of the in-plane orientation of this PEI is obviously reduced, indicating the loose stacking of molecular chains. Consequently, the D k at 10 GHz of this PEI is decreased from 3.26 to 2.85 after cross-linking. Furthermore, the D f of the cross-linked PEI is remained as low as 0.00237. In addition, the tensile strength and elongation at break of this PEI are increased from 219 MPa and 7.4% to 231 MPa and 9.7% after cross-linking, respectively. And the thermal stabilities of the cross-linked PEI are also decent as a candidate for low dielectric materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Shitong Yang,Meng Cun,Jianbo Guo,Tongzhe Wang,Kaiyue Wang,Hongfei Long,Yaohui Liu,Liyuan Liu,Qinzhong Feng,Yang Chen
Efficient and selective removal of Hg 2+ from Hg-contained wastewater remains a critical challenge in environmental remediation and advanced water treatment. In this study, a series of Hg 2+ -imprinted polymers were designed using bidentate S/N-coordinating allylthiourea (ATU) as the functional monomer. Different structural strategies were applied to enhance their selectivity and adsorption efficiency toward Hg 2+ . Comparative analysis of the structural features and adsorption behaviors of the polymers revealed effect of the imprinting effect and surface imprinting on Hg 2+ capture. SEM and BET results demonstrated that ATU-IIP/SiO 2 possessed a higher specific surface area and a more open porous structure, which facilitated the full exposure of binding sites and significantly enhanced Hg 2+ adsorption performance. Adsorption experiments showed that ATU-IIP/SiO 2 exhibited a rare stepwise adsorption process, with a twice the adsorption capacity that of ATU-IIP and reaching 70 % of equilibrium within 5 min. FTIR and XPS analyses identified S/N-containing groups ( CS NH ) dominated Hg 2+ coordination. Density functional theory (DFT) calculations further confirmed the positive role of Hg 2+ in promoting the transformation from C S to C S, supporting a dual-site synergistic coordination mechanism. Under coexisting ion interference, imprinted polymers achieved 84.3 % Hg 2+ removal and maintained over 80 % recovery after five reuse cycles, while exhibiting over 99 % Hg 2+ recovery from PVC industrial wastewater. This study provides new insights into the mechanisms of recognition, binding, and separation of Hg 2+ , offering a theoretical basis for its efficient removal from typical industrial wastewater.
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EUROPEAN POLYMER JOURNAL
·
2025
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IF 6.3
Xiao Dai,Enting Deng,Wei Zhao,Lili Zhang,Ting Zheng,Jun Shen
In order to explore the influence of helical polymers on the polymerization behavior of methacrylate monomers, the helical cellulose tris(3,5-dimethylphenylcarbamate)s (CDMPC) was synthesized via “one-pot” procedure. Then a series of poly(methyl methacrylate)s (PMMAs) were synthesized through radical polymerization in the presence of CDMPC. The structure and properties of the resulting CDMPC and PMMAs were characterized by 1 H NMR, GPC, DSC and nitrogen absorption, respectively. The influence of the feed ratio of CDMPC to MMA and initiator concentration on the properties of PMMAs was carefully investigated. Interestingly, the PMMAs synthesized in the presence of CDMPC exhibited much higher molecular weight with a narrower distribution than those of PMMAs obtained without CDMPC. The former PMMAs possessed much higher content of chain segments from coupling termination than those from disproportionation termination. It indicated that the chain propagation was probably significantly accelerated with the modulation of CDMPC and the polymerization was then effectively ended via coupling termination, which agreed well with the observation in the real-time exothermic monitoring of the polymerization process. Furthermore, the end-group structure was investigated based on the structure of MMA oligomers synthesized in the presence of CDMPC, to gain a better understanding of the related mechanism. The helical CDMPC exhibited an efficient control on the molecular weight, its distribution and polymerization kinetics of PMMAs in the radical system, providing a valuable strategy for modulation of the radical polymerization of methacrylates. The influence of CDMPC on the tacticity of PMMAs was further examined.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Hongwei Li,Jianfeng Liu,Tong Yang,Chenxi Xia,Yayun Zheng,Shasha Wei,Jitao Shang,Wenna Zhang,Xiaolin Liu,Yan Zhao
Devising advanced anode materials with fast reaction dynamics is of vital importance for high-performance sodium-ion batteries (SIBs). Herein, an advanced anode material for SIBs, featuring NiS nanoparticles (NPs) in-situ anchored on 3D honeycomb-like N,S dual-doped carbon matrixes (NiS NPs/3DHL N,S-C), is successfully synthesized by the combination of thermal decomposition and sulfidation methods. The resulting composite shows high surface area, rich pores, excellent conductivity, and ideal structural stability. Density Functional Theory (DFT) simulations further confirm that the synergistic interaction between NiS NPs and 3DHL N,S-C induces a downward energy level shift of the S 3 p orbital, effectively boosting Na + desorption and enhancing redox reaction dynamics. When serving as an SIB anode, NiS NPs/3DHL N,S-C achieves a high specific capacity of 457.7 mAh g −1 at 0.1 A g −1 , superior cycling stability (retaining 321.8 mAh g −1 after 3000 cycles at 2 A g −1 ), and remarkable rate capability (373.6 mAh g −1 at 5 A g −1 ). The relevant full cell also presents excellent performance with a specific capacity of 265.2 mAh g −1 at 1 A g −1 after 50 cycles. This research expands the design paradigm of high-performance transition metal sulfides (TMSs) in SIB anodes
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Xingyang Wu,Yucui Xiang,Liyong Gan,Shuaijun Wang,Zhongkai Hao,Guo Qin Xu,John Hon Kay Yip
Selective solar-driven conversion of CO 2 into C 2 hydrocarbons under aqueous conditions is a promising route toward carbon neutrality. However, C 2 selectivity in water is severely constrained because the intrinsically slow C–C coupling requires sustained electron flux to build up coupling-relevant intermediates. This flux is readily depleted by the competing hydrogen evolution reaction and rapid carrier recombination. Here, we construct an in situ S-scheme heterojunction of CuO islands on two-dimensional (2D) N-TiO 2 (CuO/N-TiO 2 ) via a one-pot solvothermal strategy. The chemically anchored CuO islands on 2D N-TiO 2 nanosheets create a compact, coherent interface that facilitates interfacial charge transfer. Compared with an ex situ assembled counterpart, the in situ heterojunction shows more efficient S-scheme charge separation. In situ characterizations and theoretical calculations reveal that dynamically redox-cycling Cu 2+ /Cu + sites are beneficial for C 2 H 4 formation, with Cu + sites favoring *CO retention and Cu 2+ sites being more favorable for the subsequent asymmetric *CO–*CHO coupling step. Consequently, the as-prepared catalyst delivers 17.5 μmol g −1 ethylene in 4 h with 94.6% selectivity and robust cycling stability. This work establishes an in situ S-scheme heterojunction with oxide islands anchored on 2D nanosheets that integrates charge management with dynamic active sites for selective aqueous CO 2 -to-C 2 H 4 photoreduction. An in situ grown CuO-islands/2D N-TiO 2 S-scheme heterojunction promotes charge separation for aqueous CO 2 -to-C 2 H 4 photoreduction without sacrificial agents. The dynamic Cu 2+ /Cu + active sites favor *CO formation, asymmetric *CO–*CHO coupling, and ethylene selectivity. Download: Download high-res image (161KB) Download: Download full-size image
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 19
·54556-54567
·
IF 5.8
Zhang Ge,Yang Huifen,Li Xuan,Zhou Yichen,Guo Song,Zhao Tong
The control of multiple heavy metals (HMs) pollution in solid wastes, especially the co-contamination of As and other heavy metal cations, is of great importance to ecological and environmental health. To address this problem, the preparation and application of multifunctional materials have attracted wide attention. In this work, a novel Ca-Fe-Si-S composite (CFSS) was applied to stabilize As, Zn, Cu, and Cd in acid arsenic slag (ASS). The CFSS exhibited synchronous stabilization ability for As, Zn, Cu, Cd and owned strong acid neutralization capacity. Under simulated field conditions, the acid rain extracted HMs in ASS successfully decreased below the emission standard (GB 3838–2002-IV category in China) after incubated by 5% CFSS for 90 days. Meanwhile, the application of CFSS promoted the transformation of leachable HMs into less accessible forms, which was conductive to the long-term stabilization for HMs. There was competitive relation among the three heavy metal cations, following the stabilization sequence of Cu > Zn > Cd during incubation. And the stabilization mechanisms of HMs by CFSS were proposed as chemical precipitation, surface complexation, and ion/anion exchange. The research will be greatly conducive to the remediation and governance of field multiple HMs contaminated sites.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Tongtong Zhang,Xiunan Cai,Xiangxuan Lin,Zhaoming Jiang,Hao Jin,Zuqiang Huang,Tao Gan,Huayu Hu,Yanjuan Zhang
Achieving a simultaneous increase in the redox performance of carbon nitride (CN) remains a challenge owing to the low utilization efficiency of photogenerated carriers. Herein, a novel “mechanical activation (MA)-enhanced doping and defect” strategy was proposed for structural modification of CN to enhance its performance. Specifically, CN, FeCl 3 , and thiourea were treated by MA to prepare a precursor with uniform dispersion and anchoring of Fe and S components in CN, and then the MA-treated precursor was calcinated to obtain a Fe–S co-doped CN composite (MA-Fe-S-CN) with abundant N vacancies. Under visible light illumination, MA-Fe-S-CN displayed outstanding photocatalytic performance for tetracycline (TC) removal (92.7%) and hydrogen evolution (2965 µmol g −1 h −1 ) within 120 min, which was 3.3 and 4.1 times higher than those of CN, respectively. The superlative redox performance of MA-Fe-S-CN was attributed to that MA-enhanced Fe–S co-doping and N vacancies effectively modified the built-in electric field, electronic structure, and redox potential of CN. Experimental and theoretical analysis revealed that photogenerated electrons were trapped by N vacancies and directed to Fe active sites through efficient charge transfer channels (Fe–N and Fe–S), resulting in rapid charge transfer and effective separation and utilization of carriers. On this basis, possible mechanisms of photocatalytic TC degradation and hydrogen evolution were proposed. This work provides a green and economically feasible way for improving the redox performance of CN.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Guanwei Peng,Yanyu Xie,Ying Wang,Qi Yu,Youyi Huang,Shuwu Liu,Limin Lu
Peroxymonosulfate (PMS)-assisted photocatalytic processes are economical and green strategies for the treatment of pesticide pollution. However, its degradation efficiency is severely hindered by the sluggish kinetics of active centers regeneration and low charge-transfer. Herein, S-scheme Bi 2 Fe 4 O 9 /BiOBr heterogeneous material was designed to activate PMS for thiabendazole (TBZ) degradation. Bi 2 Fe 4 O 9 and BiOBr have similar structural unit of [Bi 2 O 2 ] 2+ to share the Bi-O bonds, which is favorable to form asymmetric interface and enhance the polarization. Based on these unique characteristics between Bi 2 Fe 4 O 9 and BiOBr, a robust internal electric field in the S-scheme heterojunction is built, which could provide driving force to boost the electron-transfer process and encourage the sustainable regeneration of Fe 2+ . After optimizing the proportion of Bi 2 Fe 4 O 9 on the composite, it was found that 50 wt% Bi 2 Fe 4 O 9 /BiOBr (BFB-50) exhibits the best TBZ removal efficiency after 30 min visible light irradiation, which is 2.25 and 12 folds compared to Bi 2 Fe 4 O 9 and BiOBr, respectively. Furthermore, electron paramagnetic resonance (EPR) and radical trapping experiments indicate that 1 O 2 and SO 4 •- involving oxidation mechanism impart maximum contribution towards TBZ degradation. The possible pathways of TBZ degradation are reasonably proposed by the HPLC-MS and the toxicity evolution of TBZ is appraised using the ECOSAR software. This study provides an insight into the fabrication of S-scheme heterojunction for environment remediation through the photocatalysis/sulfate-mediated advanced oxidation process.
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