APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Yifan Ma,Wei He,Youyu Duan,Yang Wang,Yuhan Li,Fan Dong
Oxygen vacancies induce charge redistribution, facilitating oxygen adsorption. • S-scheme heterojunctions enable efficient charge separation while retaining high redox potential. • The dual-electron transfer pathway facilitates the rapid electron transfer to O 2 . • Lowered thermodynamic barrier of the rate-determining step by modulation of ROSs generation. Transition metal stannates are promising for efficient air purification due to their remarkable activity in volatile organic compounds (VOCs) degradation. However, the interfacial charge-transfer behavior and the fundamental mechanism of aromatic ring activation, specifically, C-H bond cleavage and ring-opening oxidation remain elusive, hindering rational catalyst design for toluene (C 7 H 8 ) mineralization. Herein, an oxygen-vacancy-enriched S-scheme heterojunction (SMSH-30) is constructed via a facile one-step hydrothermal strategy. The optimized heterostructure exhibits outstanding toluene removal (96.65%), mineralization efficiency (101.8%), and long-term stability (>600 min). Combined experimental and theoretical analyses unveil that oxygen vacancies (OVs) modulate charge transfer and reactive oxygen species (ROS) evolution: (1) OVs induce dual-channel electron migration, greatly facilitating interfacial charge transfer; (2) this enhanced transfer promotes O 2 activation into highly oxidative singlet oxygen ( 1 O 2 ); and (3) the optimized interface accelerates intermediate conversion with a favorable Gibbs free energy profile. This work provides molecular-level insights into charge dynamics and ROS modulation within S-scheme heterojunctions, offering a new paradigm for rational design of advanced photocatalysts toward deep VOC mineralization and sustainable air purification. Download: Download high-res image (156KB) Download: Download full-size image Combined experimental characterizations and density functional theory calculations revealed that oxygen vacancies serve as continuous O 2 activation centers, while the S-scheme interface promotes efficient charge separation and preserves high-redox-potential electrons for singlet oxygen generation toward complete anti-poisoning mineralization of toluene.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2026
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IF 9.2
Lu Zeng,Xuexia Guo,Jiahao Sun,Wenbin Huang,Huinan Zhao,Lingling Hu,Shuanghong Tian,Chun He
In Fenton-like processes, achieving rapid and efficient redox cycling of metal active centers remains a challenge. This study presents an innovative strategy that harnesses the mechanical energy of water flow to drive the redox cycling of metal active centers. Herein, Fe 3 O 4 /MoS 2 heterojunction with interfacial Mo-S-Fe bridge bonds was constructed via a one-step hydrothermal method. Under the stimulation induced by water-flow mechanical, the piezoelectric effect of MoS 2 generates charge carriers, which are rapidly directed to Fe active sites through the Mo-S-Fe bonds. This process significantly accelerates the Fe(III)/Fe(II) cycle and enhances H 2 O 2 activation, achieving 93.8% removal of sulfamethoxazole (SMX) within 60 min under water flow stimulation. The composite exhibits robust performance across a broad pH range (3.0-10.7) and in the presence of humic acid (HA) and coexisting anions, demonstrating its strong environmental adaptability. Spectroscopic evidence confirmed the formation of Mo-S-Fe bonds at the heterojunction interface. Mechanistic studies further revealed that the structure improves charge separation, promotes rapid electron transfer from MoS 2 to Fe sites, and strengthens H 2 O 2 adsorption, thereby synergistically boosting reactive oxygen species (ROSs) generation and the overall catalytic efficiency. This study proposes an innovative strategy that exploits mechanical forces generated by water flow to drive rapid redox cycling of active metal centers in Fenton-like reactions.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Chumeng Wang,Yuning Chen,Nengsheng Ye,Lu Zhang,Yuhong Xiang
Background Tobramycin (TOB) is widely used in livestock and aquaculture, but its excessive use leads to residues in animal-derived foods and the environment, threatening human health. Rapid on-site detection methods are urgently needed to ensure food safety and environmental surveillance. Results We synthesized sulfur and nitrogen co-doped dual-emission carbon quantum dots (S,N-CQDs) with emission at 340 nm (carbon core) and 620 nm (surface state). A polyadenine-extended TOB aptamer selectively quenched the 620 nm emission via electrostatic interaction-induced aggregation, while the 340 nm emission served as stable internal reference. Upon TOB addition, specific aptamer–target binding restored the 620 nm fluorescence, enabling ratiometric detection. Smartphone based dual and single-light-source portable platforms were further developed for visual on-site detection via RGB analysis. The three methods exhibited linear ranges of 10.0 nM–1.0 μM, detection limits of 2.14, 8.02, and 4.87 nM, and recoveries of 95.2%–99.4% in spiked milk and river water. Significance This work presents an integrated “detection–visualization” strategy combining a ratiometric fluorescence aptasensor with smartphone-based portable platforms. The method offers several distinct advantages: (1) the ratiometric design with built-in self-calibration ensures reliable detection in complex matrices; (2) the portable platforms enable rapid, user-friendly, and equipment-free on-site analysis; (3) the entire sensing system is cost-effective and does not require sophisticated instrumentation. These features make our approach a promising tool for routine monitoring of antibiotic residues in food safety and environmental protection.
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Nanomedicine-Nanotechnology Biology and Medicine
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2026
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IF 4.3
Guiyin Li,Xiaohong Tan,Shuang Liang,Qiufei Yu,Yibin Yu,Xiangming Li,Zhide Zhou
s Quantitative detection of Golgi protein 73 (GP73), a promising biomarker for hepatocellular carcinoma (HCC), is crucial for early diagnosis. In this study, we developed a fluorescence aptasensor for sensitive and specific detection of GP73 based on fluorescence resonance energy transfer (FRET) between GP73 aptamer-functionalized nitrogen/sulfur co-doped graphene quantum dots (N, S-GQDs-GP73 Apt ) as the fluorescence donor and molybdenum disulfide@reduced graphene oxide (MoS 2 @RGO) as the fluorescence acceptor. In the absence of GP73, the fluorescence of N, S-GQDs-GP73 Apt was effectively quenched by MoS 2 @RGO. Upon introduction of GP73, specific binding between GP73 and its aptamer triggered dissociation of the donor-acceptor complex, disrupting FRET and restoring fluorescence. Under optimized conditions, the normalized fluorescence intensity showed a good linear relationship with GP73 concentration ranging from 0.0001 to 100.0 μg/mL, with a low detection limit of 0.019 ng/mL. The aptasensor's performance was further validated using human serum samples with relative error ranging of 0.76%–3.85% and no statistically significant difference via t -test compared with ELISA results, demonstrating its potential as a reliable and cost-effective platform for early HCC diagnosis. Download: Download high-res image (97KB) Download: Download full-size image
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LANGMUIR
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2026
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IF 4.4
Dongsheng Li,Yuju Zhao,Tengyu Gao,Chun Li,Yan Jiang,Junqiang Niu,Shanshan Yao
Rechargeable systems based on sulfur cathodes have attracted considerable interest as promising candidates for advanced energy storage owing to their exceptionally large theoretical energy density. However, widespread implementation of these batteries is still hindered by several intrinsic challenges. In particular, soluble lithium polysulfide intermediates tend to dissolve into the electrolyte and migrate between electrodes, which leads to active material loss and severe capacity decay. In addition, the redox conversion reactions involving these sulfur species proceed relatively slowly, resulting in poor reaction kinetics and reduced electrochemical efficiency. In this work, a nickel@carbon (Ni@C) composite was synthesized from a nickel-based metal–organic framework (Ni-MOF) constructed using 1,4-benzenedicarboxylic acid (BDC) obtained from recycled polyethylene terephthalate (PET) plastic. The synthesized composite was later integrated with a carbon membrane containing both nitrogen and sulfur dopants, which had been derived from recycled corrugated paper. The obtained free-standing Ni@C/NSCM membrane provides effective physical confinement and strong chemical adsorption toward polysulfide intermediates while simultaneously facilitating their rapid redox conversion. In addition, the synergistic effect between N/S heteroatom dopants and the embedded Ni@C nanoparticles enhances electronic transport and promotes reaction kinetics. By employing operando impedance measurements together with distribution-of-relaxation-times evaluation, the device utilizing the Ni@C/NSCM cathode exhibits considerably reduced polarization resistance relative to the cell based on the untreated NSCM framework. This observation verifies that the embedded nickel nanostructures provide a catalytic role during the electrochemical reactions. Consequently, the Ni@C/NSCM/Li2S6 cathode with a sulfur loading of 3.84 mg delivers 980.1 mAh g–1 at 0.2 C and retains 96.5% of its capacity after 200 cycles. Remarkably, even with 8.0 mg of sulfur, the cell still maintains 92.8% capacity retention at 0.1 C. Overall, the present study offers an environmentally friendly approach for transforming discarded plastic and biomass resources into efficient binder-free electrode materials.
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高影响因子
Chem & Bio Engineering
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2026
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IF 8.4
Balamurali Ravichandran,Soujanya Prakash Bammanalli,Muthu Austeria P,Sabarinathan Ravichandran,Huiyuan Liu,Weiqi Zhang,Narayanamoorthy Bhuvanendran,Huaneng Su
Abstract Rechargeable zinc–air batteries (ZABs) require efficient and durable bifunctional oxygen electrocatalysts to accelerate both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Herein, we report a hierarchical N, S, and P co-doped carbon catalyst (CoFe/NSP-HC) featuring CoFe core–shell alloy nanoparticles and Fe–Nx coordination motifs, synthesized through a pyrolysis strategy using heteroatom-enriched g-C3N4 as both template and dopant source. Structural characterization reveals a hierarchical porous architecture with uniformly distributed heteroatoms, strong metal–support interactions, and a well-defined Co-rich core/Fe-rich shell configuration. The synergistic integration of CoFe alloy interfaces, Fe–Nx coordination sites, and a defect-rich carbon framework effectively modulates the electronic structure and optimizes the adsorption/desorption behavior of oxygenated intermediates. Consequently, the optimized CoFe/NSP-HC catalyst exhibits bifunctional activity with an ORR half-wave potential of 0.82 V and an OER overpotential of 260 mV at 10 mA cm–2, delivering a low bifunctional potential gap (ΔE) of 0.67 V. Furthermore, the catalyst demonstrates robust electrochemical durability, maintaining stable ORR/OER performance after prolonged cycling. Density functional theory calculations reveal that Fe–Nx sites and Fe-based interfacial centers provide favorable reaction energetics for oxygen electrocatalysis, while Co species contribute to electronic modulation and kinetic enhancement. When employed as the air cathode in a rechargeable ZAB, CoFe/NSP-HC delivers a peak power density of 158.7 mW cm–2 and long-term cycling stability exceeding 350 h. This work provides an effective strategy for constructing multi-component electrocatalysts with synergistically engineered active sites for advanced metal–air energy storage systems.
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ACS Applied Energy Materials
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2025
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IF 5.5
Dong Zhang,Ren Ma,Haozhe Liu,Zhengqiang Xia,Gang Xie,Sanping Chen
Constructing S-scheme heterojunctions on two-dimensional (2D) conductive metal–organic frameworks (c-MOFs), which possess high specific surface area, abundant active sites, and excellent electrical conductivity, is widely regarded as an effective strategy to enhance photocatalytic performance. In this study, an S-type heterojunction was fabricated by coupling a 2D c-MOF, Cu3(HHTP)2, with In2S3 to synergistically improve photocatalytic activity. Unlike conventional flake-like heterojunctions that often block the vertical pore channels of c-MOFs, we synthesized rod-like Cu3(HHTP)2/In2S3 composites through controlled morphological engineering. Experimental results demonstrate the resulting nonplanar interfacial contact effectively preserves the intrinsic pore architecture while fully exposing the dz2 orbitals of Cu active centers. Structural analyses reveal that the rod-like Cu3(HHTP)2 interacts with In2S3 predominantly via In–O bonds formed on its lateral facets, thereby maintaining the inherent porosity and exposing a large number of active sites. Consequently, the CO2 adsorption capacity reaches 13.44 cm3·g–1, 2.18 times higher than that of the flake-like Cu3(HHTP)2/In2S3 composite that In2S3 is bonded via Cu–S bonds on the surface. Moreover, the incorporation of In2S3 enhances interlayer charge transport within the rod-like structure. As a result of these synergistic effects, the electron consumption rate of the rod-like heterojunction is 1.73 times greater than that of its flake-like counterpart. The unique architecture not only retains the in-plane charge transport advantages derived from d-π conjugation in c-MOFs but also introduces interlayer electron-bridging pathways through In2S3, leading to significantly improved electrical conductivity and charge separation efficiency.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Yizhi Zeng,Xianghong Ren
Unsymmetrical dimethylhydrazine (UDMH), as a high-energy liquid rocket fuel widely used for energy liquid rocket fuel, inevitably produces huge volumes of UDMH wastewater during use. As UDMH and its byproducts are both highly toxic, this poses a severe threat to ecological environment and human health, making it an urgent need to develop an efficient, environmentally friendly treatment for UDMH wastewater. Photocatalytic technology has emerged as a research hotspot in the field of water pollution control owing to its low cost and eco-friendliness. In this study, a (001) facet-dominated 001-TiO 2 /CeO 2 S-scheme heterojunction was constructed via a solvothermal-photoassisted method, effectively achieving primary carrier separation. Under simulated solar irradiation, this structure achieved a 98.7 % degradation efficiency for 100 mg/L UDMH wastewater within 140 min, with degradation rate constants 3.8 times and 5.5 times higher than those of 001-TiO 2 and P25, respectively. To address the challenge of recovering powdered photocatalysts, this study immobilized the nanopowders using a silver conductive adhesive, creating a two-dimensional conductor interface for electron transport and a nanoparticle structure for hole retention, thereby enabling secondary carrier separation. Under simulated solar irradiation, this immobilized structure achieved a 75.1 % degradation efficiency for 100 mg/L UDMH wastewater within 420 min. More importantly, it demonstrated excellent reusability and recyclability. This study provides a practical and feasible approach for the efficient degradation of UDMH wastewater.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Sixun Li,Na Wang,Baiqi Hao,Han Li,Qun Xu,Ziqiu Ren
Graphitic nitrogen (N) is the optimal N configuration for peroxymonosulfate (PMS) activation, yet its formation is poorly controllable and usually scarce in N-doped carbon catalysts. Herein, a novel zigzag “N-C-C-S” engineering strategy via sulfur (S)-assisted doping is developed to fabricate S, N co-doped porous carbons (S x N-PCs). Precise tuning of S/N ratio induces N configuration reconstruction, increasing graphitic N content. S 0.57 N-PC affords a 3.1-fold enhancement in PMS activation activity, completely removing bisphenol A (BPA) with a high reaction rate constant (0.597 min -1 ). The “N-C-C-S” moiety enables dynamic switching of reaction mechanisms from radical-initiated degradation to 1 O 2 -mediated mineralization via tailored electronic states of graphitic N. Characterizations and theoretical calculations reveal that S atoms can occupy carbon matrix defects, triggering electron redistribution between adjacent N and C atoms to lower the energy barrier for graphitic N formation. Furthermore, the “N-C-C-S” moiety forms an electron-delocalized system that modulates graphitic N to a moderately electron-enriched state, preserving HSO 5 - adsorption capacity while reducing the energy barrier of PMS decomposition. This optimized electronic state of graphitic N stabilizes active O* intermediates and reduces their formation energy barrier, thereby promoting 1 O 2 generation. A continuous-flow system using S 0.57 N-PC@PVDF membrane demonstrates exceptional durability over 36 h in real-world wastewater treatment.
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INDUSTRIAL CROPS AND PRODUCTS
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2026
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IF 6.4
Wendi Fang,Naixin Kang,Le Huang,Guiying Dai,Xueting Fei,Hongxu Liang,Hongxiang Hu
The reduction and precipitation of Cr during the adsorption process has always been challenging. In this study, S and N codoped lignin-based porous carbon (SN-LPC) was prepared by hydrothermal treatment and K-intercalation activation for the removal of Cr(VI). We discovered that SN-LPC has a new mechanism underlying the adsorption–reduction–readsorption of Cr(VI): First, SN-LPC adsorbs Cr(VI) onto its surface through the hydrogen bonding of -OH and the electrostatic adsorption of N functional group protonation; second, the S and N functional groups act as electron donors to induce the rapid reduction of Cr(VI) to Cr(III). Last, the –C–OR/C N groups on the SN-LPC surface and the S and N functional groups adsorb Cr(III) again, increasing the removal of Cr(VI). DFT calculations have revealed at the molecular structure level that SN-LPC has a more active electronic nature. Doping of S and N increases the affinity of SN-LPC for chromium, which explains why it can efficiently reduce and fix Cr(VI) and adsorb Cr(III). The removal process of Cr(VI) by SN-LPC is mainly multilayer adsorption dominated by chemical adsorption, with a maximum adsorption capacity of 967.45 mg/g (pH 2, 45 °C, and an initial concentration of 800 mg/L), and the removal efficiency is much greater than that of similar activated carbon and biochar. The 2D-FTIR–COS results further elucidated the sequence of functional groups of SN-LPC in the process of reducing Cr(VI), supporting the mechanism hypothesis of adsorption–reduction–readsorption. These findings highlight the significance of sulfur and nitrogen as key groups in reduction and adsorption and provide a reference for the underlying synergistic adsorption reduction mechanism used to repair Cr(VI).
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FOOD CHEMISTRY
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2023
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IF 8.8
Wei Jia,Xin Wang
Endogenous aflatoxin B1 (AFB1) was quantified in five hundred and forty Hengshan goat meat samples (0.00 ± 23.09 μg kg −1 ). Zanthoxylum bungeanum ( Z. bungeanum ), as a natural pickling spice, can ameliorate the flavor of animal-derived food (goat meat). Yet, considering the direct administration of Z. bungeanum in AFB1-contaminated goat meat, the degradation mechanisms of AFB1 remain elusive. Here, UHPLC-Q-Orbitrap HRMS-based integrative metabolomics (LOQ: 1.74–59.54 μg kg −1 ) and proteomics analyses were executed to determine the effects of Z. bungeanum in the biotransformation of AFB1. Z. bungeanum (1.50 %, w/w ) application mediated the metabolism of xenobiotics by cytochrome P450, significantly down-regulated cytochrome P450 1A and stimulated the up-regulation of glutathione S-transferase levels in AFB1-contaminated goat meat, leading to degradation of AFB1 (20.00–3.39 μg kg −1 ). Metabolomics assays indicated that Z. bungeanum up-regulated l -histidine (1.43–2.21 mg kg −1 ) and l -arginine, manifesting potential applications for the contribution of Z. bungeanum to the nutritional value of goat meat.
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MOLECULAR PHARMACEUTICS
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2023
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IF 4.9
Qinming Xu,Xing Li,Jingang Yang,Yan Zhang,Xiaocui Deng,Gang Li,Qingmei Yuan
Four peptide amphiphiles (PA1-4) with different degrees of polymerization (DP = 40, 15, 10, and 6) were synthesized by Fuchs-Farthing and ring-opening polymerization followed by post-polymerization modification, as fully characterized by 1H NMR, FT-IR, gel permeation chromatography, and circular dichroism (CD) spectroscopy. It was found that PAs could self-assemble to form regular spherical micelles in low-concentration (about 1 mg/mL) aqueous solution, which had different contents of secondary structures and mainly adopted random coil conformations. The water solubility of PAs increases with the increase of DP, the polypeptide chain stretches randomly in water, the β-sheets decrease, and the random coil conformations dominate. When the pH of PA solution decreases or increases, intramolecular hydrogen bonds break, and molecular chains stretch, leading to a decrease of α-helix, turn conformations, and an increase of β-sheets. Meanwhile, the particle size of micelles increases. At around 0.4 mg/mL, the hemolysis ability of PA2 is negligible at pH 7.4 and 6.5 and about 33% at pH 5.5. Cisplatin (CDDP) was linked to micelles by coordination bonds to explore their potential as drug carriers, exhibiting controlled pH and reduction in dual drug release effects. MTT assay showed that the HeLa cell viability was 78% when cultured in the 13.5 μg/mL PA2 blank micelles for 2 days, while the cell viability was 60% in the CDDP-loaded micelles. Furthermore, a high concentration of PA2 (about 100 mg/mL) could self-assemble into a fibrous hydrogel at pH 5.5, which self-healed 2 h after incision and self-degraded 71% within 14 days. The CDDP-loaded fiber hydrogel exhibited a sustained release effect similar to the CDDP-loaded micelles. The cytotoxicity of CDDP-loaded fibers at 48 h was detected to be the same as that of the same amount of CDDP, and the cell viability was 7%. Therefore, we provide a new strategy for the synthesis of amphiphilic peptides with potential applications in nano-drug carriers and cancer therapy.
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高影响因子
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