MICROCHIMICA ACTA
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2026
·Vol. 193
·期 8
·563
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IF 5.4
Liu Huan,Chen Yuhan,Sun Han,Wang Boyan,Liu Aihua
The sensitive monitoring of bisphenol A (BPA) concentration remains a critical challenge in environmental analysis and public healthcare. In this study, Mn 3 O 4 nanorods were facilely prepared in an aqueous solution at room temperature using Mn 2+ as the precursor, NaOH as the basic source and L-histidine as the mediator. The as-prepared Mn 3 O 4 nanorods exhibit excellent laccase-mimicking activity with a catalytic efficiency of 3.85 × 10 − 3 min − 1 . The catalytic mechanism was confirmed to be oxygen vacancies by electron paramagnetic resonance spectrum and enzymatic inhibition experiment. Taking advantage of the excellent laccase-mimetic properties of the Mn 3 O 4 nanozyme, a sensitive and selective colorimetric sensing platform for BPA detection was constructed. The colorimetric sensing platform achieved a linear detection range of 1–60 µM BPA and a detection limit of 0.23 µM for BPA (3σ/S). The proposed method was applicable to the determination of BPA in plastic-packaged white vinegar, bottled water and milk with good recoveries and reproducibility. This work not only provides a novel and efficient analytical tool for the rapid detection of BPA but also offers a new insight into the design and synthesis of other amino acid-mediated nanozymes for environmental monitoring applications. Graphical
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FOOD CHEMISTRY
·
2026
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IF 10.4
Jiangping Cao,Zetong Wang,Chongchong Du,Xueli Zhuang,Jimei Zhou,Juanjuan Wei,Hongwei Di,Yangying Han
In this work, a novel ferrofluid was fabricated by coating Fe 3 O 4 nanoparticles with a hydrated deep eutectic solvent synthesized from choline chloride and urea, in which water was rationally introduced to tailor the solvent viscosity and modulate the hydrogen-bonded network. The prepared ferrofluid was used for the dispersive liquid-liquid microextraction of bisphenols in edible oil followed by the determination with high performance liquid chromatography. The integration of the hydrated deep eutectic solvent and Fe 3 O 4 nanoparticles enable efficient mass transfer, rapid phase separation, and convenient practical implementation. Molecular dynamics simulation was employed to reveal the underlying extraction mechanism. Under the optimum conditions, excellent performance of linearity ranged from 50 to 5000 μg L −1 (R 2 ≥ 0.9990), limit of detection (2.4–4.6 μg L −1 ), precision (RSDs ≤5.6%) and extraction recoveries (91.32%–95.91%) were achieved, which suggested a practicable alternative route for the determination of bisphenols in various edible oils.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xiaoyang Song,Yan Wang,Xiaohua Ren,Xu Zhao
TiRuSnPt electrodes with nanoporous structure were fabricated. • Sn Pt co-doping enhances TiRu for dual CER and EOP functionality. • TiRuSnPt electrodes efficiently degrades organics mainly via in-situ generated O 3 and 1 O 2 . • 100% BPA degradation maintains over 240 h under periodic polarity reversal. The electrochemical generation of free chlorine and ozone for the degradation of organic pollutants in water holds broad application prospects. While traditional TiO 2 -RuO 2 /Ti (TiRu) electrodes exhibit favorable chlorine evolution performance in chloride-containing systems, their oxidation capability is limited under chloride-free or low-chloride conditions. To extend the applicability of electrodes in various water matrices, this study developed a TiRuSnPt electrode with simultaneously enhanced electrochemical chlorine evolution (CER) and electrochemical ozone production (EOP) via a tin‑platinum co-doping on TiRu strategy. The TiRuSnPt electrode achieves excellent CER activity that exhibits a Faradaic efficiency (FE) of 67% under low-chloride conditions at 50 mM Cl − . Moreover, the incorporation of tin and platinum enhances the EOP capability of TiRu, overcoming the limitations of conventional TiRu in chloride-free systems for water purification. In chloride-free electrolytes, the ozone and reactive oxygen species generated by TiRuSnPt can efficiently degrade various organic pollutants, such as bisphenol A (BPA) that achieving 99.7% removal within 6 min. TiRuSnPt exhibited high stability under polarity reversal conditions, that can maintain 100% BPA removal and over 80% of total organic carbon removal in a continuous BPA degradation system for more than 240 h. The high stability was due to tin‑platinum co-doping on TiRu, of which the accelerated lifetime increases by 2.6 times for TiRuSnPt compared to TiRu. This work provides a feasible strategy for developing multifunctional TiRuSnPt electrodes with high-efficiency chlorine evolution and ozone production capabilities, thereby broadening their application scopes in water treatment. Download: Download high-res image (159KB) Download: Download full-size image
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2026
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IF 1.7
Sun Yubing,Zeng Nalan,Zhu Weiyu,Tang Shuai,Lu Xirui
The combined pollution of radionuclides, heavy metals and organics during uranium mining (i.e., association/coexist with heavy metals) or reprocessing of spent fuel (i.e., organic extraction) has become a prominent issue nowadays. Herein, the synergetic removal mechanism of U(VI), Cr(VI) and bisphenol(BPA) on porous covalent organic framework/graphitic carbon nitride (COF/g-C 3 N 4 ) was investigated using optical, microscopic and spectroscopic techniques. Compared to g-C 3 N 4 (1%), the high photocatalytic reduction (77%) and the excellent stability (90% after 5 recycles) of U(VI) on COF/g-C 3 N 4 could be attributed to the highly efficient separation of photogenerated carrier and wide response range of COF/g-C 3 N 4 under visible light (low band gap of 1.98 eV). In the ternary system, the increased removal of U(VI) on COF/g-C 3 N 4 was due to the consumption of h + by Cr(VI) and BPA, whereas the further increase of Cr(VI) and BPA inhibited U(VI) removal due to the competition of active sites. The interaction mechanism of U(VI) on COF/g-C 3 N 4 was ascribed to superoxide radicals by trapping and XPS analysis. These findings are crucial for the actual application of COF/g-C 3 N 4 on simultaneous removal of radionuclides, heavy metals and organic in complexed systems. Graphical abstract
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Journal of Food Measurement and Characterization
·
2026
·
IF 3.6
Zhang Xia,Sun Yizhan,Ben Yingying,Liu Ru,Lv Shuwen,Xu Yuandong,Li Peng
An electrochemical molecularly imprinted polymer (MIP) sensor is developed for sensitive detection of bisphenol A (BPA) based on leaf-like Cu 2 S/activated functionalized carbon nanotubes (AFCNTs) nanocomposite as the conductive substrate. The Cu 2 S/AFCNTs composite shows a BET specific surface area of 24.7 m 2 g − 1 , which is approximately eight times higher than that of the pure Cu 2 S (3.3 m 2 g − 1 ). This enlarged surface area contributes to abundant accessible active sites and promotes efficient electron transfer. The electroactive area of the Cu 2 S/AFCNTs-modified electrode is 0.40 cm 2 which is fivefold higher than the bare electrode (0.08 cm 2 ). The MIP film is electropolymerized onto the composite surface with a thickness of 2.91 nm. Mechanistic studies confirm that BPA oxidation is an adsorption-controlled irreversible process involving 2H + /2e − . Under optimized conditions, the sensor displays a broad linear range from 0.9 to 20 µM and a limit of detection of 0.19 µM with high selectivity against common interferents. The sensor also demonstrates good reproducibility (RSD 4.2%) and stability. Practical applicability is validated by determination of BPA in milk samples, with recoveries ranging from 99% to 102.1% (RSD 2.1 ~ 3.7%). This work highlights the synergistic enhancement of Cu 2 S and AFCNTs for constructing high-performance MIP-based electrochemical sensors for food safety monitoring.
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DYES AND PIGMENTS
·
2026
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IF 3.9
Weidong Yu,Jialing Tan,Chen Zhang,Daokun Tian,Hao Li,Cheng Zeng,Chaoxia Wang
Positive/negative thermochromic dyes achieved via hydrogen bond competition. • Adjustable phase change behavior controlled by long alkyl chain integration. • Thermochromic fabrics changed at 47°C (white to red) and 35°C (red to white). Thermochromic ternary complexes relying on phase change materials to switch color currently lack effective measures to regulate their color-changing direction. In this work, a brominated fluorane dye (BDF) was synthesized via condensation reaction and subsequently incorporated with dodecyl gallate (DG, color developer) and 1-tetradecanol (TD, phase change solvent) to form a positive thermochromic ternary complex. The DG participated in the melting and crystallization process of the phase change solvent due to the presence of multiple phenolic hydroxyl groups and long alkyl chains (C12), thereby generating a distinct colorless-to-colored transition upon heating. The positive thermochromic fabric prepared via dip-coating exhibited excellent thermal cycling stability. In contrast, a negative thermochromic complex was constructed with BDF, bisphenol A (BPA, color developer), and TD. Because BPA lacks long alkyl chains to integrate into the phase change process of TD, this negative complex altered its color from red to colorless upon heating. To stabilize the negative thermochromic ternary complex and address phase separation, melamine-urea-formaldehyde (MUF) resin was employed as a protective shell to provide nanoscale spatial confinement for the phase-changing process. The thermochromic capsules (TC) prepared via in situ polymerization exhibited an average diameter of 536 nm, a well-defined core-shell structure, and superior thermochromic reversibility. The reflectance difference of the microcapsules reached approximately 20%, enabling distinct optical color changes. This regulatory mechanism for controlling color-changing direction and stabilizing phase separation through nanoscale confinement effects provides a promising approach for developing high-performance thermochromic textiles. Download: Download high-res image (408KB) Download: Download full-size image
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-16
·
IF 15.7
Liu Ya,Yang Jiajia,Wang Yuxian,Zhu Wanli,Hu Kunsheng,Liu Zhang,Yeung Kinglun,Zhu Zhong-Shuai,Chen Chunmao,Duan Xiaoguang,Wang Shaobin
Compositional heterogeneity in metal/nitrogen-doped carbons (M-N-Cs) complicates the fundamental elucidation of the intricate interplay between the active metal species that rule the reactivity of single atomic catalysts (SACs). This study unveils the electronic disruptions of cobalt nanoparticles (Co NPs) to the catalytic behaviors of cobalt single-atom (Co SA). The intense electronic communications between high-density Co NPs and Co SA sites lead to dissociation O 3 on the high-spin Co SA sites to generate surface-confined hydroxyl radicals ( • OH). However, the tandem electron transfer yields superoxide radical (O 2 •– ) with low reactivity and remarkably reduce ozone utilization efficiency (OUE). In contrast, independent Co SA sites far or free from adjacent Co NPs induce a nonradical O 3 activation regime, which markedly improves electron utilization efficiency (~2.9-fold), OUE ( ~ 3.0-fold), and turnover frequency (TOF, ~2.5-fold) of Co SA. The nonradical catalytic ozonation process demonstrates high adaptability to complex water matrices and maintains long-term stability in the treatment of real petrochemical wastewater. The deciphered electronic interplays between metal nanoparticles and single atom sites advance a new paradigm to regulate the selectivity of single atom catalysis.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ying Cheng,Jiaxuan Chen,Jiuhua Song,Jiali Chang,Yang Li,Qiao Zhang,Yifan Feng,Kai Shi,Tao Jiang
Detection of MPXV DNA in urban wastewater is crucial for early warning, rapid response, and effective outbreak control, offering a non-invasive approach to strengthen epidemic preparedness and public health defense. Based on heparin sodium-assisted one-tube recombinase polymerase amplification (RPA)/split gRNA with Cas12a (SCas12a) and phosphorothioate-modified hairpin G-quadruplex (psHG4), we have developed a colorimetric biosensing platform to achieve sensitive and on-site detection of MPXV DNA in urban wastewater (called hoRPA/SCas12a). The MPXV DNA initiates a one-tube RPA/SCas12a reaction facilitated by heparin sodium, subsequently inducing the DNase activity of SCas12a. The loop DNA of psHG4 is cleaved by active SCas12a to release the pre-blocked psG4 sequence, enabling the formation of a psG4/hemin complex with K + and hemin. The complex is capable of initiating the oxidation of 3,3′, 5,5′-tetramethylbenzidine (TMB) to generate the colorimetric substrate TMBox. The portable smartphone was employed to record the RGB value changes of the sample. The hoRPA/SCas12a platform displays a linear range of 10 aM to 100 fM, with a detection limit of 3 aM. Moreover, this platform can selectively and accurately detect MPXV DNA in urban wastewater. The hoRPA/SCas12a platform is vital for early warning, effective public health response, and strengthening wastewater-based epidemiology in emerging infectious disease control.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Yuanyuan Zhao,Mengmeng Zhang,Jiapeng Liu,Jing Hou
Co-exposure to low-density polyethylene microplastics (LDPE-MPs) and plastic additives like bisphenol A (BPA) and bisphenol AF (BPAF) poses a growing concern in aquatic environments, yet the role of LDPE-MPs in modulating their toxicity remains debated. This study integrates transcriptome sequencing, adsorption/desorption kinetics, and computational toxicology to assess how LDPE-MPs influence BPA- and BPAF-induced toxicity in zebrafish. We found that BPAF is more toxic than BPA, with 96 h lethal concentration 50 % (LC 50 ) values of 1.659 mg/L for BPAF and 6.219 mg/L for BPA. LDPE-MPs act as dual modulators, alleviating or exacerbating toxicity in a chemical- and pathway-dependent manner. For BPA, LDPE-MPs mitigate its impact on phototransduction by adsorbing BPA, reducing its bioavailability, and preserving light signal conversion. In contrast, LDPE-MPs exacerbate BPA-induced nucleotide metabolism disruptions by enhancing inosine-5′-monophosphate dehydrogenase (IMPDH) activity, leading to increased gene transcription and accumulation of metabolic intermediates. For BPAF, LDPE-MPs alleviate glucose metabolism disruptions by enhancing ligand-receptor interactions, restoring glucose homeostasis. However, LDPE-MPs have little effect on BPAF-induced upregulation of steroid biosynthesis genes. These findings highlight the integration of multi-omics approaches (transcriptome sequencing, adsorption/desorption kinetics, and computational toxicology) to reveal the dual mechanisms of LDPE-MPs, addressing the knowledge gap in understanding pathway-specific toxicity mechanisms in existing studies. The results emphasize the necessity of prioritizing regulatory control of BPAF and integrating BPA/BPAF-MPs interactions into future pathway-based environmental risk assessment frameworks.
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Water
·
2025
·Vol. 17
·期 11
·1700
·
IF 3
Xiaoni Lin,Qiang Ge,Xianbo Zhou,Yan Wang,Congyun Zhu,Kuanyong Liu,Jinquan Wan
Bimetallic catalysts can effectively enhance the catalytic degradation efficiency of peroxymonosulfate (PMS), which is usually attributed to the enhancement of electron transfer, but currently, there is no clear explanation of the mechanism of how the electron transfer is enhanced. A nitrogen-doped Fe/Mn composite biochar (FeMn-NBC) was co-constructed by hydrothermal synthesis and high-temperature calcination. The FeMn-NBC activated PMS more efficiently than the monometallic one due to the enhanced electron transfer between Fe and Mn. The FeMn-NBC/PMS system activated PMS with Mn as the active center, and the high oxidation state of Mn4+promoted the acceleration of the PMS adsorption of the generation of Mn2+/Mn3+. This gaining effect accelerated the electron cycling between Fe2+/Fe3+and Mn2+/Mn3+/Mn4+, which enhanced the PMS catalysis to generate free radicals (•OH, SO4•−and •O2−) and non-radicals (1O2) for the efficient degradation of diisobutyl phthalate (DIBP). Benefiting from this gaining effect, the degradation rate of DIBP by the FeMn-NBC/PMS system was increased by 2.43 and 3.38 times compared to Fe-NBC and Mn-NBC. The bimetallic-enhanced electron transfer mechanism proposed in this study facilitated the development of efficient catalysts for more efficient and selective removal of organic pollutants.
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Nanomaterials
·
2025
·Vol. 15
·期 11
·865
·
IF 4.3
Lingshuai Kong,Mingshuo Zhu,Jinhua Zhan
Rapid industrialization has escalated environmental pollution caused by organic compounds, posing critical challenges for wastewater treatment. Advanced oxidation processes based on peroxymonosulfate (PMS) suffer from metal leaching and catalyst recycling challenges. To address these limitations, this study developed a nitrogen-doped biochar aerogel (NBA) derived from poplar wood powder as an eco-friendly and easily recoverable PMS activator. The NBA catalyst, optimized by tuning the calcination temperature to achieve a specific surface area of 297.5 m2g−1, achieved 97% bisphenol A (BPA) removal within 60 min with a catalyst dosage of 0.3 g/L and 1.0 mM PMS under mild conditions. The material exhibited broad pH adaptability (pH 3.5–9), recyclability (>94% efficiency after thermal treatment), and versatility in degrading seven pollutants (BPA, phenol, 4-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, rhodamine 6G, and levofloxacin) through synergistic radical (•OH, SO4•−, O2•−) and non-radical (1O2) pathways. X-ray photoelectron spectroscopy (XPS) analyses revealed that nitrogen doping enhanced PMS activation by optimizing electronic structures. This study highlights the potential of waste biomass-derived carbon aerogels as eco-friendly, efficient, and reusable catalysts for advanced oxidation processes in wastewater treatment.
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JOURNAL OF POLYMER SCIENCE
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2025
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IF 3.6
Guangming Liao,Yukun Hu,Min Wang,Longyu Tian,Zaijun Lu
The cross-linked polysulfone-benzoxazine alternating copolymers (PSU-mBZs) were synthesized by the copolymerization of phenol end-functionalized polysulfone oligomers (PSU-OHs) varying molecular weights from 2000 to 5800 g/mol with non-homopolymerizable methyl substituted benzoxazine (mBZ), respectively. The structures and molecular weights were characterized by FT-IR, 1 H NMR, 13 C NMR, and SEC. The results showed that the well-defined model network was designed and synthesized successfully. Therefore, the precise controls in cross-linking density, glass transition temperature ( T g ), and mechanical properties of PSU-mBZs were achieved. The cross-linking density and T g of PSU-mBZs decreased linearly from 376.03 to 129.87 mol/m 3 and 325°C to 228°C with increasing molecular weight of PSU-OH, described by the equations y = −0.062 x + 472.82 and y = −0.020 x + 331.96, respectively. Meanwhile, the tensile strength and breaking elongation of PSU-mBZs increased linearly from 26 to 76 MPa and from 4.8% to 15.9% with increasing molecular weight of PSU-OH, described by y = 0.013 x + 1.40 and y = 0.0030 x − 1.94, respectively. This work establishes a well-defined model network for studying microstructure-macroscopic property relationships. The materials exhibit excellent high-temperature resistance, tunable mechanical properties, good chemical stability, and potential flame retardancy, making them promising for coatings, resin matrix composites, advanced electronic packaging, and other fields. Graphical Well-Defined Cross-Linked Grids.
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