JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 2.8
Zhangxu Chen,Fanli Meng,Hongyun Ren,Lifen Zhang,Minglian Fu,Danchen Zhu
A key factor limiting the photocatalytic performance of pure graphitic carbon nitride (g-C 3 N 4 ) is the swift recombination of photogenerated electron–hole pairs. To address this issue, the ZnO/g-C 3 N 4 composites were synthesized via a one-step calcination method. Their structure, composition, and morphology being characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). An L 16 (4 5 ) orthogonal array was employed to investigate the effects of various factors on the removal efficiency. The results exhibit that under optimal conditions (sunlight irradiation time: 20.0 h, pH: 7.00, catalyst dosage: 40 mg, ZnO/g-C 3 N 4 mass ratio: 4:1), the methylene blue removal rate reached 92.36%. Comparative experiments demonstrated removal efficiencies of 43.64% for phenol, 52.13% for tetracycline, and 40.26% for pyridine, respectively. Moreover, the removal rate of methylene blue can still reach 90.12% after five cycles. Trapping experiments for active species confirmed that photogenerated electrons and holes are critical for methylene blue degradation. ZnO doping g-C 3 N 4 improves the methylene blue removal performance of g-C 3 N 4 , providing a facile strategy for developing g-C 3 N 4 /metal oxide heterostructure to deal with emerging contaminants in the future.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.3
Zhaoyang Li,Xiang Zhang,Yingjie Song,Weiming Yang,Xiaolu Cheng,Ping Zhang,Cheng Liu,Changchun Zhou,Haishun Liu
Fe-based metallic glass (Fe-based MG) ribbons are susceptible to surface oxidation during long-term service, resulting in degraded magnetic and catalytic properties. In this work, a rapid and cost-effective strategy, termed Selective Etching and Ion Exchange (SEIE), was applied to restore the catalytic activity of oxidized Fe-based MG ribbons. Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 ribbons were thermally oxidized at 200 °C for 30–240 min to simulate varying degrees of aging after service, followed by surface cleaning and SEIE activation. The activated Fe-based MG ribbons exhibited a first-order rate constant ( k obs ) of 2.37 min −1 for degrading 20 mg/L acid orange 7 (AO7), which is an order of magnitude higher than that of the pristine ribbons. Microstructural characterization revealed the formation of Cu clusters with two distinct morphologies generated by ion exchange, which induced a galvanic coupling effect, significantly enhancing hydroxyl radical (·OH) generation and catalytic degradation. However, excessive Cu deposition impeded Fe-H 2 O 2 interactions, reducing catalytic activity. The activated Fe-based MG ribbons maintained 70 % higher k obs values than the pristine ribbon after 10 degradation cycles, and exhibited excellent performance for phenol degradation ( k obs =0.417 min −1 ). This study demonstrates a sustainable and efficient surface-activation approach for utilizing oxidized Fe-based MGs, offering both environmental and economic benefits.
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JOURNAL OF CHROMATOGRAPHY A
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2026
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IF 4
Chenyue Zhu,Chuanxiang Yao,Huiting Qin,Wei Zhang,Xinyue Zheng,Siying Zheng,Xinyuan Ye,Ying Xiong,Lili Jiang,Sen Li,Meiqin Wang,Hongliang Jiang,Zhifeng Du
The presence of deamination impurities in phosphorothioate oligonucleotides (PS-ONs) presents a significant challenge to quality control, as their detection is complicated by minimal mass differences from the parent molecule and difficulties in chromatographic separation. Herein, a bottom-up strategy based on enzymatic digestion, chemical derivatization, and liquid chromatography-tandem mass spectrometry (LC-MS/MS) was proposed for the sensitive qualitative and quantitative analysis of trace cytosine deamination in PS-ONs. Fomivirsen (FMVS) and its deamination impurity were used as models. The method involved digestion with S1 nuclease, followed by derivatization of the 5’-phosphorothioate in digests with N-(tert-butyldimethylsilyl)-N-methyltrifluoroacetamide (MTBSTFA) to enhance chromatographic retention and mass spectrometric response. This approach effectively eliminated the need for ion-pairing (IP) reagents. The mass shift upon deamination was amplified in the smaller digested fragments, and a unique isotopic pattern in the derivatized products, specifically, the decrease of the first isotopic peak and the increase of the second isotopic peak was exploited for quantification. The method demonstrated excellent linearity over a weight ratio of deamination product to prototype range from 0.05:1 to 0.9:1. Satisfactory accuracy (80–120%) and precision (RSD < 15%) were achieved. Furthermore, the precise deamination site (C8) within a sample containing 10% deamination impurities was successfully identified. Thus, this method provides a powerful tool for profiling deamination impurities in PS-ONs, with potential applications in quality control, stability studies, and the characterization of other nucleic acid modifications.
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Chemical Engineering and Processing-Process Intensification
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2026
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IF 3.9
JIANG Xi,PANG Yunji,ZHANG Tiejun
This study prepared a biochar-supported nickel oxide (NiO/BC) catalyst for the microwave-catalyzed degradation of gaseous phenol, aiming to investigate the degradation mechanism and pathway regulation. By optimizing preparation and reaction parameters, it was found that at a Ni loading of 6 wt% and a microwave power of 480 W, the gas-phase products accounted for 98.6% of the total products, with optimal selectivity for H₂ and CO in the syngas. Characterization results indicated that NiO was in-situ reduced to metallic Ni nanoparticles during the reaction, forming the key catalytically active centers that synergistically catalyzed cracking and hydrogenation reactions. This process primarily converted phenol into syngas (H₂ + CO) and long-chain alkanes (tetradecane). The study further revealed that excessively high microwave power caused the sintering of Ni particles, resulting in catalyst deactivation. This research elucidates the dynamic evolution of the catalyst under microwave irradiation and the directed conversion mechanism of phenol, providing a scientific basis for developing efficient and stable microwave-catalyzed technologies for the resource treatment of organic pollutants.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9
Zishui Dong,Sinuo Li,Eldon R. Rene,Zhifei Meng,Weifang Ma
Fe-MXene catalyst featuring Ti/O dual vacancies and multiple active sites was directional designed and synthesized via Molten Salt Self-Assemble, which could realize 96.73% degradation and 77.45% mineralization to 20 mg/L benzotriazole (BTA) within 20 min with amendment of 0.5 g/L Fe-MXene and 15 mg/L O 3 at pH 7.0. The degradation rate attained 0.1836 min −1 with 2.6 times enhancement compared to single O 3 . This highly efficient degradation was ascribed to synergetic effects from 55.92% hydroxyl radicals (•OH), 28.3% superoxide radicals (•O 2 − ), and 9.24% singlet oxygen ( 1 O 2 ). These approximately fivefold •OH and threefold •O 2 − active species generation were attributed to superior catalytic activity from Fe-MXene with multivalent redox couples (Fe (II)/Fe (III), Ti (III)/Ti (IV)) and Ti O double vacancies, which enhanced O 3 and electron transport. Fe-Mxene catalyst efficiency maintained over 96% after 5 recycle. This efficient and stable degradation mechanism is mainly driven by Ti O double vacancies, which accelerated direct adsorption O 3 conversion to •O 2 − and indirect chemical generation •OH driven by Fe/Ti electron transfer acceleration. This generation of multiple oxidizing active species accelerated three types of ring-opening behaviors for BTA from hydroxy substitution on benzene ring, oxidation ring-opening of triazole ring, and assistive double bond rupture driven by non-radical pathway. This rapid benzene ring-open induced ecotoxicity reduction, while triazole ring degradation triggered ecotoxicity increase. The extensive application of Fe-MXene catalyst demonstrated that the highly efficient and selective characteristics to refractory coal chemical wastewater containing toxic benzene rings and azole rings.
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Foods
·
2026
·Vol. 15
·期 1
·137
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IF 5.1
Xingyue Gao,Xinming Zhao,Jie Huang,Huan Liu,Jielun Hu
This study aimed to elucidate the structure–activity relationship between the structural characteristics of three plant-derived polysaccharides, Lycium barbarum polysaccharide (LBP), citrus pectin (CP) and peach gum polysaccharide (PGP), and their prebiotic functionalities. Structural analysis indicated that LBP exhibited a medium molecular weight and was rich in galactose and rhamnose, which contributed to its high uronic acid content, strong antioxidant activity, and sustained fermentation profile with enhanced butyrate production. In contrast, CP, with its low molecular weight and neutral linear glucan backbone, was rapidly utilized by gut microbiota, leading to accelerated propionate accumulation. Meanwhile, PGP, characterized by an ultra-high molecular weight and a highly branched arabinogalactan configuration, acted as a specific substrate that promoted mid- to late-stage fermentation and significantly increased butyrate yield, highlighting its prebiotic property driven by structural complexity. The functional differences among these polysaccharides were determined by their monosaccharide composition, molecular weight distribution, and chain conformation. These findings provide a scientific basis for the targeted development of plant-derived prebiotics aimed at specific metabolic functions.
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ACS Nano
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2026
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IF 16
Han Chen,Yanxia Gao,Jiaxin Du,Runlong Hao,Xuanhao Wu,Lidong Wang,Zhongbiao Wu
The electrochemical nitric oxide reduction reaction (NORR) provides a promising pathway for mitigating air pollutant NO while generating valuable ammonia (NH3). However, most research has focused on high NO concentrations (≥10%), which contrast with industrial dilute streams (≤1%), where conventional catalysts, such as single-atom catalysts (SACs), struggle with insufficient active site density and limited *H supply, while nanoparticle catalysts suffer from hydrogen evolution reaction (HER) competition. To address these challenges, we designed a hybrid catalyst consisting of atomically dispersed Co–N4 satellitic sites and Co(111) nanoparticles (Co SA-NPs). Through electronic interaction, Co(111) facilitated enhanced water dissociation to generate *H, while Co–N4 sites strengthened NO adsorption and activation. This cooperative mechanism promoted rapid *H spillover, enabling selective NO hydrogenation to NH3 while suppressing HER. Under 1% NO, Co SA-NPs achieved a significant NH3 yield rate of 11389 μg cm–2 h–1, which is 2.6 to 243.9 times higher than all previously reported NORR catalysts. At industrially relevant and ultralow concentrations (0.05, 0.1, and 0.5%), it maintains a notable average Faradaic efficiency of 93.6% and NH3 yield rates (556, 948, and 3120 μg cm–2 h–1 respectively) among the highest reported under such challenging conditions. Furthermore, the catalyst demonstrated durability with >85 h of stable operation, and a cumulative NH3 production reaching the gram-scale, showcasing its practical potential. Techno-economic analysis (TEA) revealed that NORR with Co SA-NPs could achieve zero-cost NO treatment and even generate profit, compared to traditional NH3–SCR.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2026
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IF 8.4
Bingnan Li,Jinlong Shi,Xiang Li,Jianli Ding,Jinjie Wang,Dongxing Wu,Xinlei He,Yuan Zhang
Fenton oxidation technology can generate highly reactive free radicals through a series of processes and is widely used for advanced mineralization treatment of industrial wastewater. However, its oxidation rate is limited by the regeneration of Fe 2+ . This research was based on the Fenton principle and combined with electrochemistry to develop a ferric ion recycling system using discarded stainless steel as the cathode. This system regenerates Fe 2+ through electrochemical reduction, catalyzes hydrogen peroxide to produce hydroxyl radicals, and then degrades pollutants. Results show that after filling the cathode with stainless steel scrap, its electrochemical active area reaches 2633 cm 2 . At a current density of 0.6 mA cm −2 and an influent flow rate of 80 mL min −1 , the regeneration efficiency of iron ions reaches 83 % within 70 min, with a current efficiency of 93 % and energy consumption of 8.21 × 10 −4 kWh g −1 Fe 2+ . After adding hydrogen peroxide at a COD:H 2 O 2 ratio of 1:1.5, the electrochemical system could remove 97 % of phenol and 90 % of COD, with an energy consumption of 4.21 × 10 −5 kWh g −1 COD. The reaction mechanism of the electrochemical system was verified through electrochemical analysis and quenching experiments. Results indicate that the direct oxidative degradation effect of the electrode on pollutants is minimal, and the degradation of pollutants primarily originates from the oxidation of • OH, which is generated by the Fenton reaction catalyzed by Fe 2+ . The electrochemical system developed in this study exhibits high stability, enabling the effective degradation of pollutants while achieving the resource utilization of metal waste and iron sludge. This provides technical support for its industrial application.
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Food & Function
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2026
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IF 5.4
Li Jiao,Jiangdong Zou,Huanhuan Ma,Danfei Huang,Chang Li
This study employed ultrasonic-assisted DES technology to extract jujube polysaccharides (ZJP) and investigated the effects of α-galactosidase modification on their structural characteristics and prebiotic functions. The modified polysaccharide (α-ZJP) exhibited significant alterations in physicochemical properties, including reduced neutral sugar and protein content, increased reducing sugars and uronic acids, and a shifted molecular weight distribution due to selective cleavage of galactose and rhamnose residues. Structural analysis confirmed the retention of key functional groups and revealed a transformed morphology from smooth sheets to a porous, sponge-like architecture. In vitro fermentation demonstrated that α-ZJP promoted rapid initial microbial growth and short-chain fatty acid (SCFA) production, by enriching Firmicutes and Lachnospiraceae. In contrast, unmodified ZJP showed sustained fermentation, yielding higher total SCFAs and selectively promoting butyrate-producing bacteria like Coriobacteriaceae. Both polysaccharides enhanced microbial diversity and SCFA accumulation, indicating their potential as prebiotics for gut health through distinct structure-dependent mechanisms.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.5
Xiao-long Yan,Wen-Tao Zhong,Chen-xin Yang,Qian Tang,Chengbin Gong
Chlorpyrifos, an organophosphorus pesticide, poses health risks when present as a residue in fruits. This study reports the development of a novel photo-responsive deep eutectic solvent (PR-DES) for the sensitive and accurate detection of trace chlorpyrifos residues in fruit samples. The successful synthesis of PR-DES was confirmed by FT-IR, 1 H NMR, UV-Vis, and thermogravimetric analysis. By coupling PR-DES with UV-Vis detection, a green, cost-effective analytical method was developed for chlorpyrifos measurements, achieving a low limit of detection (16.19 μg L -1 ) and quantification (53.99 μg L -1 ).For spiked fruit samples, this method exhibited high average recoveries (98.6%-102.4%) and low relative standard deviations (0.63%-2.50%). Notably, chlorpyrifos can be hydrolyzed and removed post-analysis, whereas the photo-responsive component of PR-DES was recyclable, promoting sustainable chemical practices. This design strategy of PR-DES enriches the structural diversity and functional responsiveness of DES, thereby broadening their potential applications in analytical and environmental chemistry.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.1
Chenyan Lu,Dajie Zou,Ning Zhang,Huye Li,Yanyan Jia,Huan Wang
In this study, the hexane extract of Asters tataricus was used as the carbon source, and ethylenediamine and 4-bromophenylene diamine were selected as dopants to prepare nitrogen and bromine co-doped carbon dots (N,Br-CDs) by the hydrothermal synthesis method. The obtained fluorescent probe has a uniform particle size distribution, good water solubility and high stability, with a fluorescence quantum yield of 48.43%. Under 420 nm excitation conditions, N,Br-CDs exhibited the strongest fluorescence emission at 513 nm, indicating that the sensing system was in the “ON” state. Subsequently, TA was introduced as a quencher to induce static quenching of the N,Br-CDs system, significantly weakening the fluorescence intensity and switching the sensing system from “ON” to “OFF”. Finally, after EM was introduced into the N,Br-CDs/TA system, EM preferentially formed a complex with TA and weakened its quenching effect on the quantum dots, thereby achieving fluorescence recovery and returning the sensing system from the “OFF” state to the “ON” state. Based on the above mechanism, an “ON-OFF-ON” fluorescence sensing system with N,Br-CDs as the luminescent substrate was constructed for the sensitive detection of TA and EM. The results showed that the system exhibited good linear response to TA, with the linear ranges being 1.50–22.94 μM and 34.88–348.42 μM, respectively, and the limits of detection being 0.2168 μM and 2.1797 μM, respectively (LOD, S/N = 3). The linear range for EM was 1.93–377.08 μM, with a detection limit of 0.6693 μM. Furthermore, the sensor system was capable of quantitatively determining TA and EM in human serum, Huangshui River water, and milk matrices, demonstrating its potential for broad application in environmental monitoring and bioanalysis.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 21.1
Yifei Liu,Kaicai Fan,Cheng-Hao Chuang,Porun Liu,Zumin Wang,Lingbo Zong,Lei Wang
The nanoconfined environment offers a synergistic combination of physical confinement and electronic regulation, yet its underlying microscopic mechanisms remain to be systematically elucidated. Herein, we fabricate atomically dispersed homonuclear Mn catalytic pairs through the perhalate cascaded oxidation strategy within nanoconfined pores on activated mesoporous carbon spheres (Mn 2 -N-AMC). Finite element method (FEM) simulations and density functional theory (DFT) calculations reveal that nanoconfinement enhances O 2 transport and weakens the adsorption of oxygen intermediates. Furthermore, the bridge adsorption configuration of intermediates on Mn pairs promotes the subsequent O* protonation and reduces the energy barrier for OH* desorption. Consequently, Mn 2 -N-AMC exhibits superior radical scavenging capability and delivers excellent oxygen reduction reaction (ORR) performance with a half-wave potential (E 1/2 ) of 0.90 V and remarkable stability. Additionally, Mn 2 -N-AMC-based aqueous Zn-air batteries (A-ZABs) achieve an ultrahigh power density of 256.7 mW cm −2 and long-life stability (> 800 h). Quasi-solid-state ZABs also display a long-life operation over 100 h across various current densities, with negligible voltage gap decay. This work provides mechanistic insights, advancing the rational design of nanoconfined ORR catalysts for sustainable energy conversion and storage.
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危险品化学品经营许可证（带存储）