WATER RESEARCH
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2026
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IF 12.8
Ying Liu,Zhenyu Wang,Ducheng Yao,Chengcheng Chu,Zhong Chen,Wei Xiaojie,Jinguo Wang,Shun Mao
The widespread adoption of donor-acceptor polymer photocatalysts remains constrained by two fundamental limitations: inefficient charge carrier separation and the practical drawbacks of powdered catalysts. To overcome these challenges, we implement a synergistic local polarization and mass-transfer engineering strategy. Through rational molecular design, we developed a thiazole-bridged d -A polymer (TATZ) with strong π-conjugation and an enhanced built-in electric field. This molecular architecture not only promotes exceptionally efficient electron-hole separation but also directs the oxygen reduction pathway almost exclusively toward superoxide radical (•O 2 ⁻) formation, responsible for 96.7% of the observed photocatalytic activity. The optimized material achieves a tenfold improvement in photo-oxidation kinetics, enabling complete degradation of ciprofloxacin within 25 min. To translate these molecular advantages into practical implementation, we constructed a macroscopic, scalable sponge-based reactor (20 × 20 cm) through controlled deformation of a TATZ-incorporated hydrogel. This integrated system demonstrates excellent contaminant removal efficiency under continuous-flow operation using natural sunlight, confirming its potential for real-world application. Our work establishes a comprehensive design framework for advancing photocatalytic technology across multiple scales—from molecular motifs to functional macroscopic systems.
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TALANTA
·
2026
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IF 6.7
Chenhuan Wang,Zhimei Liu,Yang Zhu,Jiayi Zhang,Zhi Li
Herein, a boronic acid-functionalized porous organic polymer (B-TC-POP) was synthesized via a two-step Friedel-Crafts reaction. The B-TC-POP showed remarkable adsorption capability for phenolic endocrine disrupting compounds (EDCs-OH). The adsorption mechanism of B-TC-POP mainly depends on the strong hydrogen bonding and π-π interactions. The B-TC-POP was utilized as a solid-phase extraction adsorbent in combination with high-performance liquid chromatography-mass spectrometry (HPLC-MS) to construct a new analysis approach for highly sensitive determination of several EDCs-OH in chicken and shrimp matrices. The proposed method demonstrated excellent performance, achieving low detection limits (S/N = 3) of 0.30-1.50 ng g −1 (chicken sample) and 0.25-1.30 ng g −1 (shrimp sample), high accuracy (spiked recovery of 86.2 %–108 %), and good precision (relative standard deviation < 7.4 %). This work not only elucidates the potential of boronic acid-functionalized adsorbents in contaminant monitoring but also provides a strategy for designing advanced functional adsorbents with enhanced adsorption efficiency.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Jinglin Chen,Xiaoying Feng,Tingting Tu,Chunying Wei,Yongsheng Cui,Juan Zheng,Gangfeng Ouyang
Background The increasing concern surrounding environmental pollution necessitates effective monitoring of emerging organic pollutants, especially for bisphenol compounds (BPs). These compounds are prevalent in various industries and have been detected in trace amounts across different ecosystems, raising significant health concerns. Current monitoring techniques often rely on extensive use of extraction solvents, large sample sizes, and expensive materials. Therefore, there is a pressing need for the development of cost-effective, stable, and eco-friendly pretreatment methods to enhance monitoring efficiency. Results A novel biochar from Gynostemma pentaphyllum , designated PBAGB, synthesized through a waste-to-wealth strategy that integrates K 2 CO 3 activation, ball-milling, and plasma treatment. This innovative approach resulted in a biochar with high specific surface area, abundant oxygen-containing functional groups, and numerous defect sites. The modifications significantly enhanced the active sites available on PBAGB, which was then employed as a solid-phase microextraction (SPME) fiber for extracting bisphenols (BPs). Compared to commercial fibers, the PBAGB-coated fiber demonstrated excellent stability, improved extraction performance, and lower production cost. Coupled with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), the method achieved good linear ranges (5–5000 ng L −1 ), low detection limits (0.39–2.9 ng L −1 ), and satisfactory relative recoveries (80.4–119.9%), allowing for efficient determination of BPs in 21 marine samples from the Beibu Gulf. Significance The work presents a more sustainable, practical, and effective sample pretreatment technique utilizing direct-immersion SPME (DI-SPME) coupled with UPLC-MS/MS for environmental monitoring of trace BPs in Beibu Gulf, following a waste-to-wealth strategy. It emphasizes the practical application of PBAGB-coated fibers in extracting BPs and assessing the ecological risks posed by trace BPs.
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2026
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IF 12.2
Yixin Huang,Yihui Zhang,Mengzhe Zhao,Shuwen Yan,Weihua Song
The peroxyacetyl radical [CH3C(O)O2•, PAR] is a highly selective oxidant that plays a critical role in peracetic acid (PAA)-based advanced oxidation processes (AOPs). The kinetic and mechanisms of PAR reactions with dissolved organic matter (DOM), a major sink and reactive matrix in natural waters, have been poorly understood. In this study, we quantitatively characterized the reactivity of PAR toward diverse DOM isolates using a competitive kinetic method. The second-order rate constants between PAR and DOM isolates (kPAR,DOM) were determined, ranging from (4.0 ± 0.2) × 101 to (4.0 ± 0.2) × 102 L mgC–1 s–1 at pH 7.3. Our results demonstrated that phenolic moieties are the dominant PAR-reactive sites in DOM. The measured kPAR,DOM values correlated strongly with bulk DOM properties, including the phenolic content, electron-donating capacity (EDC), and optical E2/E3, enabling empirical prediction of DOM reactivity toward PAR. Beyond quenching, DOM exhibited dual effects on PAR-mediated contaminant oxidation. Anilines or phenols with an electron-drawing group (e.g., −CN and −Cl) were inhibited through back reduction of their radical cations by DOM, while those with an electron-donating group (e.g., −CH3) were promoted through secondary oxidation by reactive DOM-derived intermediates (RIsDOM). These findings establish the first comprehensive kinetic framework for PAR–DOM reactions in aquatic environments.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·122002
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IF 7.5
Qian Zhang,Shiyun Xu,Qingjun Fan,Jiaojiao Zhang,Xiaofeng Zhou,Tianran Sheng,Fuying Hao,Liangquan Sheng,Zhaodi Liu,Huajie Xu
Lattice strain is commonly acknowledged as an effective strategy for tuning the catalytic activity of transition metals, yet its direct impact on Fenton-like reactions remains not fully understood. Herein, we introduce compressive strain into CoMn 2 O 4 via thermal expansion effects in conjunction with a component regulation strategy to enhance peroxymonosulfate (PMS)-based Fenton-like activation. Structural analysis reveals that the compressively strained features enhance metal-oxygen bond coupling and induces the formation of a substantial amount of oxygen vacancies, which promote PMS adsorption and interfacial charge transfer. The obtained CoMn 2 O 4 (2:1)/PMS system demonstrates efficient and stable removal of organic pollutants via dominant nonradical pathways ( 1 O 2 ), and the reaction kinetics was enhanced from 0.078 min −1 to 0.264 min −1 , and the removal rate for sulfadiazine (SD) was as high as 99.8% within 30 min after five cycles. Furthermore, the remarkable feasibility of the CoMn 2 O 4 (2:1)/PMS system for practical wastewater treatment in real river water and pharmaceutical effluents was demonstrated, particularly through the development of a catalytic membrane filtration system and an in-situ floating water treatment device. This study offers new insights into the design of high-performance PMS activation catalysts via lattice strain engineering.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.8
Zhima Yangcuo,Xiaodan Zheng,Yajuan Zhang,Xin Yang,Xinyi Zheng,Hang Zhu,Wenhui Chen,Qihong Cai
Under alkaline conditions with sodium hydroxide (NaOH), both 1-naphthol (1-NAP) and 2-naphthol (2-NAP) transitioned from their molecular forms to ionic forms, resulting in redshifts of their fluorescence spectra. Thus, not only the interference of 2-NAP raman peak was eliminated, but the fluorescence intensity of two naphthols was also enhanced, thereby improving the selectivity and sensitivity of their analysis. Due to their structural similarity, the conventional fluorescence spectra of 1-NAP and 2-NAP overlapped and interfered with each other, precluding their simultaneous measurement without prior separation. In this study, the wavelength difference (Δλ) = 140 nm was selected for synchronous fluorescence spectrometry (SFS) scanning to simplify the spectra. However, the interference of 2-NAP on 1-NAP remained significant. So, the second-order derivative technique combined with SFS was adopted. The method that eliminated the severe interference between 1-NAP and 2-NAP and wastewater background by utilizing spectral parameters. Finally, a new second-order derivative SFS for simultaneous determination of 1-NAP and 2-NAP was first established. The detection limits were 0.0850 ng·mL −1 for 1-NAP and 0.1066 ng·mL −1 for 2-NAP, with linear ranges of 0.5–80 ng·mL −1 and 0.5–50 ng·mL −1 , respectively. Recoveries of two naphthols in wastewater were 87.53%–93.50% (1-NAP) and 89.85%–104.00% (2-NAP). The new SFS established in this research has been successfully applied to the analysis and detection of 1-NAP and 2-NAP residues in wastewater, achieving satisfactory results. It is expected to become a new routine detection method for 1-NAP and 2-NAP.
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ACS Sustainable Chemistry & Engineering
·
2026
·Vol. 14
·期 35
·16045-16056
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IF 7.6
Ge Xiao,Wu Xinyi,Liu Xinya,Zheng Xiyang,Xu Jinze,Tian Li-jiao,Wang Wei,Wang Xiaozhi
Spin state strongly governs the pathway selectivity of photocatalytic oxygen reduction, dictating whether the reaction proceeds via the desired two electron (2e – ) route to H 2 O 2 or the competing four electron (4e – ) pathway. Herein, this work reports a ligand-field symmetry-breaking strategy that enables controlled spin state switching, thereby steering the oxygen reduction pathway toward selective two electron H 2 O 2 production. Specifically, symmetry breaking creates an asymmetric equatorial ligand field, triggering a deterministic spin state transition from intermediate spin to high spin on the Mn site. The resulting high-spin configuration features delocalized d-states and a downshifted d-band center, which collectively weaken *OOH adsorption to suppress premature O–O bond cleavage while preserving efficient O 2 activation through spin polarized electron transfer. As a result, the optimized high spin catalyst delivers an exceptional H 2 O 2 production rate of 5025 μmol·g –1 ·h –1 under simulated sunlight, representing a 2.3-fold enhancement over its intermediate spin (IS) counterpart. Furthermore, its activity is maintained under natural sunlight in ambient air, achieving a H 2 O 2 production rate of 2662 μmol·g –1 ·h –1 . This work establishes ligand field symmetry breaking as a precise and generalizable paradigm for spin state engineering in single atom catalysis, offering a direct route to overcome the selectivity efficiency compromise in photosynthesis of H 2 O 2 .
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ACS Sustainable Chemistry & Engineering
·
2026
·Vol. 14
·期 35
·15995-16008
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IF 7.6
Zhang Wenlin,Liang Siqi,Ma Chuanguo,Liu Yuqi
Multifunctional benzoxazine resins with high‑rigidity skeletons have gained widespread research interest owing to their comprehensive performance advantages, but their monomers typically suffer from high melting points and poor solubility. To address this issue, three multifunctional benzoxazines, DATR-fa, DAHT-fa, and DPAHT-fa, were synthesized in the green solvent ethanol using biomass-derived phenolic acids, phenolic alcohols, and furfurylamines. All three monomers exhibit low melting points (81, 93, and 61 ° C), which are attributed to the introduction of ester groups and short alkyl chains that weaken molecular rigidity and packing regularity. Through thermal curing, three cured resins, poly(DATR-fa), poly(DAHT-fa), and poly(DPAHT-fa), were prepared, all of which exhibit excellent heat resistance (glass transition temperatures of 266, 286, and 296 ° C), high thermal stability (initial decomposition temperatures of 353, 341, and 359 ° C), and good flame-retardant properties (heat release capacity (HRC) values of 65.4, 46.4, and 61.8 J/(g·K), total heat release (THR) values of 6.4, 4.7, and 5.0 kJ/g, and UL-94 ratings of V1, V0, and V1, respectively). Furthermore, a detailed study was conducted on the flame-retardant mechanism of these polybenzoxazine resins. This work offers new guidelines for designing multifunctional benzoxazine resins featuring balanced processability, thermal stability, and intrinsic flame retardancy.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Chunyan Zhang,Wenke Xie,Wenliang Li,Na Li,Lingxiang Zhang,Yuxiang Zhong,Liang Sun,Wenjun Li,Songtao Cai,Hu Chen,Zhongchang Wang,Jianxin Luo
Highly defective UiO-66 was prepared using a one-pot solvothermal approach with benzoic acid as a defect modulator. • The pore structure and hydrophilicity of UiO-66 can be regulated by tuning the load of benzoic acid. • BPA adsorption by UiO-66-B3 is a spontaneous exothermic process dominated by monolayer chemisorption. • The excellent BPA adsorption performance of UiO-66-B3 arises from a synergistic process. UiO-66, a Zr-based metal-organic framework (MOF), shows great potential in adsorption, catalysis, water treatment, and chemical shielding. Defect engineering has been employed to further enhance its adsorption performance. Nevertheless, conventional defective UiO-66 suffers from time-consuming synthesis and fragile porous structure, and its adsorption capacity needs further improvement. In this study, a highly defective UiO-66 (denoted as UiO-66-BX, where X = 0, 1, 2, 3, 4, and 5) was synthesized using a one-pot solvothermal approach, with BA as the defect modulator to trigger competitive coordination. Its adsorption performance was demonstrated using bisphenol A (BPA). The results demonstrated that the adsorption data of the UiO-66-B3 for BPA in wastewater were well-fitted by the pseudo-second-order kinetic model and the Langmuir model, and both Δ G and Δ H were below 0, indicating that it is a spontaneous exothermic process dominated by monolayer chemisorption. Meanwhile, the theoretical adsorption capacity of the UiO-66-B3 can be up to 340.14 mg∙g −1 at 298.15 K. Additionally, adsorption by the UiO-66-B3 showed excellent tolerance to high ionic strength (variation in the adsorption capacity <7%) and good reusability (variation in adsorption capacity <10%). The excellent adsorption performance of the UiO-66-B3 can be attributed to a synergistic process involving mesopore-induced pore filling, hydrogen bonding between Zr-OH sites and phenolic -OH, coordination bonding between Zr 4+ and O in -OH, and π-π stacking of benzene rings. This study provides a promising strategy for the development of defect-rich UiO-66 for efficient pollutant removal. Download: Download high-res image (210KB) Download: Download full-size image
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POLYMER DEGRADATION AND STABILITY
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2026
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IF 8.1
Puxi Zheng,Zhoufeng Wang,Wenchi Zhang,Hui Xu
To address the limited solution processability and insufficient thermo-oxidative char stability of conventional polyarylates, a molecular structure regulation strategy was proposed in this work. A series of DOPO-HQ-containing copolyarylates were synthesized by incorporating 10 - (2,5 - dihydroxyphenyl) - 10H - 9- oxa-10-phosphaphenanthrene-10-oxide (DOPO-HQ) into the polyarylate backbone through solution copolycondensation. The chemical structures and copolymer compositions were confirmed by 1 H NMR, HSQC NMR, quantitative 1 H NMR, and FT-IR analyses, while GPC and XRD were used to characterize the molar-mass parameters and amorphous structures, respectively. Thermal analysis showed that DOBA-20, prepared with 20 mol% DOPO-HQ in the total bisphenol feed, exhibited a glass transition temperature of 194.9 °C and a char yield of 38.3% at 800 °C under nitrogen. More importantly, DOBA-20 retained a char yield of 32.7% at 800 °C under air atmosphere, far exceeding that of the DOPO-HQ-free polyarylate, DOBA-0 (0.04%), indicating significantly enhanced char stability under oxidative conditions. TG-FTIR and Py-GC/MS analyses, together with XPS and SEM analyses of char residues, demonstrated that DOPO-HQ mainly promoted the retention of phosphorus species in the condensed phase, facilitating the formation of a continuous and compact phosphorus-rich char layer containing phosphate/pyrophosphate structures. This stable char layer could suppress heat transfer and oxygen diffusion, possibly accompanied by limited gas-phase inhibition. This work provides a molecular design strategy for regulating the thermal degradation pathway of polyarylates and improving their solution processability and thermo-oxidative stability.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Mingyu Sun,Qingqing Hao,Jingxingyu Wu,Chenye Fu,Long Lin,Guochun Lv,Shihuai Deng,Xiaohui Lu,Jiali Peng
In this study, a nanoconfinement strategy was employed to encapsulate nano-Fe(III) (Fe 2 O 3 -in-CNT) for the rapid degradation of bisphenol A (BPA) through PMS-mediated Fenton-like reaction. Specifically, compared with the surface coated Fe 2 O 3 on the CNT (Fe 2 O 3 -out-CNT), the Fe 2 O 3 -in-CNT demonstrated 3.07 times higher k obs value toward the degradation of BPA. Comprehensive experimental analyses reveal that the Fe 2 O 3 -in-CNT exhibits superior electron transfer capacity and chemical reactivity, which stems from the strengthened interaction between CNT and nanoconfined Fe 2 O 3 . Mechanistic investigations identified a profound transition: although the electron transfer process (ETP) was the main pathway for pollutant degradation in the Fe 2 O 3 -in-CNT/PMS and Fe 2 O 3 -out-CNT/PMS systems, the nanoconfined architecture triggers a dual-mechanism by uniquely facilitating the generation of sulfate radicals (SO 4 •− ). In addition, the possible degradation pathways of BPA were proposed by high-performance liquid chromatograph triple quadrupole mass spectrometer (LC-MS/MS). Meanwhile, Fe 2 O 3 -in-CNT demonstrated exceptional longevity and minimal metal leaching in continuous-flow fixed bed experiments due to the physical shielding of the CNT channels. This study deepens the insights into nanoconfined catalysis and provides a high-performance, sustainable strategy for the detoxification of persistent organic pollutants in complex aquatic environments.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Xiaohua Xu,Lin Hao,Weihua Liu,Qianqian Wang,Shuofeng Li,Qiuhua Wu,Chun Wang,Zhi Wang
Synthesize A covalent organic framework material (DTB-COF) with hydrazone bond. • The phenolic pollutants (CPs) in juice, milk and honey samples were determined. • DTB-COF effectively adsorbs CPs via the synergistic actions of π-π stacking, hydrophobic, and hydrogen bonding. To address the challenges of phenolic pollutants (PPs), including high toxicity, poor degradability, and difficulty in trace enrichment, this work developed a hydrazone-linked covalent organic framework (DTB-COF). DTB-COF features abundant N H hydrogen bond donors and C N hydrogen bond acceptors within its pores, enabling synergistic adsorption of PPs through hydrogen bonding, hydrophobic interactions, π-π stacking, and pore filling. Employing DTB-COF as a solid-phase extraction adsorbent combined with high-performance liquid chromatography, we established a quantitative detection method. In juice, milk, and honey, the limits of detection were 0.12–0.22, 0.29–0.58, and 0.53–1.51 ng mL −1 , respectively; the spiked recoveries ranged from 87.0%–112.0%, 89.1%–112.9%, and 87.6%–112.9%, respectively, with relative standard deviations below 6.89%. This method demonstrates high accuracy and good reproducibility, effectively addressing the limitations of traditional adsorbents, such as low capacity and poor reproducibility, offers a reliable and efficient strategy for the trace analysis of PPs in food matrices. Download: Download high-res image (111KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）