TALANTA
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2026
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IF 6.7
Leila Mohammadipour,Mohammad R. Rezayat,Peng Li,Mohammad T. Jafari,Lingfeng Li,Lihui Huang
A solvent-free, low-dead-volume design of a thermal desorption unit (TDU) was developed as an introduction system to significantly improve the performance of handheld ion mobility spectrometry (IMS). The TDU configuration eliminates solvent interference using solvent-free desorption, enhancing the sensitivity of IMS analysis and preventing signal overlap between the analyte and the solvents. Furthermore, the dead volume of the introduced TDU was decreased to diminish the peak broadening to a few seconds. The major advantage is the ability to maintain a uniform temperature within the TDU to avoid analyte condensation toward IMS. Furthermore, the designed platform was validated to analyze compounds with diverse physicochemical properties, including pesticides, drugs, and explosives. To demonstrate the potential of the TDU in real sample analysis, chlorothalonil (CTL) was chosen and determined as a test compound using the thin film microextraction method followed by IMS. Metal organic framework-808@5-nitroisophthalic acid (NIP) was synthesized by a solvothermal procedure, and electrospinning was applied to prepare the thin film. Several experimental factors influencing the extraction efficiency and signal of CTL were identified and optimized. The linearity, limit of detection, and limit of quantification were obtained to be 0.3-10 ng mL −1 , 0.09 ng mL −1 , and 0.3 ng mL −1 , respectively. The intra- and inter-day repeatabilities were calculated as 2% and 6% for 0.5 ng mL −1 , and as 3% and 7% for 5.0 ng mL −1 . Several real samples, consisting of tomato, cucumber, and lake water, were chosen to assess the performance of the suggested approach. The spiking recovery values ranged from 98% to 107%. Additionally, the accuracy of the proposed approach was evaluated using the EPA 508 reference method.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Jinhai Leng,Jianqing Wu,Fengying Ma,Weihua Chen,Yinghua Yao,Kunzheng Zhan,Shihao Wu,Qinfen Gu,Shanshan Shang,Daiqi Ye
Direct air capture (DAC) of CO 2 is a critical negative-emission technology for mitigating climate change. Although amine-functionalized metal-organic frameworks (MOFs) are promising DAC adsorbents, their performance is often constrained by inherently limited microporosity, restricted amine loading, and slow mass transfer. Here, we report a novel strategy to engineer hierarchically porous cerium MOFs Ce-BPY (HP-Ce-BPY) by controllably forming defects through specific photoinduced linker distortion and coordination-bond weakening, generating abundant mesopores while preserving structural crystallinity. Subsequent amine grafting markedly strengthens CO 2 affinity, with HP-Ce-BPY-EDA delivering a CO 2 uptake of 1.35 mmol g⁻ 1 at 1.0 bar and 0.25 mmol g⁻ 1 under DAC conditions (0.4 mbar), over 1000-fold higher than pristine Ce-BPY and HP-Ce-BPY. Remarkably, humidity further enhances dynamic CO 2 adsorption, achieving 0.7 mmol g⁻ 1 at 75% relative humidity, while maintaining over 80% capacity after ten adsorption-desorption cycles. Combined CO 2 -TPD and in-situ DRIFTS analyses reveal a chemisorption-dominated, humidity-dependent adsorption mechanism, shifting from carbamate formation under dry conditions to bicarbonate formation in the presence of water, thereby improving amine utilization efficiency and CO 2 uptake. This work introduces a simple, scalable, and cost-effective photochemical route to hierarchically porous amine-functionalized MOFs, offering a promising material platform for high-performance DAC under realistic ambient environments.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Kao Chen,Huailiang Li,Jingyi Chen,Annan Wang,Weiwei Zhu
Highly recoverable and stable heterogeneous catalysts are critical for peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs). This work addresses the difficult separation and metal leaching issues of conventional powdered metal–organic frameworks (MOFs) by constructing a self-supporting Co-MOF@chitosan (Co-MOF@CS) composite membrane. Through in situ reconstruction during PMS activation, the low-crystallinity Co-MOF precursor transforms into an amorphous CoO(OH) nanolayer on the membrane surface. The reconstructed active phase anchors firmly on the porous CS substrate, thereby enabling efficient PMS activation by facilitating rapid electron transfer and providing abundant surface active sites. The Co-MOF@CS membrane exhibited excellent catalytic performance, degrading > 96% of the methylene blue (MB) and ∼70% of sulfadiazine (SDZ) after five consecutive cycles. Notably, the degradation efficiency increased slightly after multiple cycles due to continuous exposure of CoO(OH) active sites. The Co species effectively anchored onto the CS matrix through strong coordination, contributing to extremely low cobalt leaching (0.05 to 0.06 mg/L) and outstanding long-term reusability. Radical quenching and electron paramagnetic resonance (EPR) analyses revealed superoxide radicals (O 2 •− ) and singlet oxygen ( 1 O 2 ) as the dominant reactive species. This work elucidates the dynamic self-activation of low-crystallinity Co-MOFs in AOPs while providing a green and sustainable solution to secondary pollution caused by powdered nanocatalysts during water treatment.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Tianhong Liu,Ziyi Xu,Shuiyuan Zhang,Long Yu,Junting Mo,Mingtai Sun,Suhua Wang
Background Trace water contamination in organic solvents severely hampers chemical synthesis, pharmaceutical manufacturing, and electronic device fabrication; however, existing detection methods lack portability, adequate sensitivity, or stability. While MOF-based fluorescent sensors show promise, most are limited by single-signal outputs, weak anti-interference capability, and poor solvent tolerance. Results To address these challenges, we report an amino-functionalized europium-doped zirconium MOF (Eu@MOF-NH 2 ), synthesized via a one-step solvothermal method, serving as a robust ratiometric fluorescent probe for trace water detection. The material exhibits dual emissions: ligand-based (435 nm) and Eu 3+ -centered (614 nm). Upon water exposure, strong hydrogen bonds with the ligand activate intramolecular charge transfer (ICT) to intensify the blue emission. Concurrently, high-frequency O–H vibrational coupling quenches the red emission by blocking ligand-to-metal energy transfer, causing a rapid (<30 s) pink-to-blue visual transition. The fluorescence intensity ratio (I 435 /I 614 ) demonstrates excellent linearity with water content (0–10% v/v) and achieves ultralow limits of detection in ethanol (0.1643%), THF (0.0311%), methanol (0.3355%), and acetonitrile (0.0148%). Furthermore, this probe maintains consistent sensing performance across 11 diverse organic solvents with highly varying polarities. Integrated with a smartphone-assisted RGB colorimetric platform based on the blue-to-red intensity ratio, Eu@MOF-NH 2 enables portable, on-site, and quantitative visual detection. Significance This work overcomes the traditional limitations of sensitivity and stability, providing reliable material design and sensing strategies for industrial trace water monitoring and quality control.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Ziyan Niu,Qian Yin,Chunxia Liu,Mengke Song,Shunyao Li,Jialin Yu,Zhao Ma,Kai Sun
Endocrine disruptors bioaccumulate along food chains, impairing reproductive function in wildlife and elevating chronic disease risk in humans. Natural humification-inspired bioenzymatic catalysis (NH-IBC) can interrupt pollutant transfer from crops to higher trophic levels, but its efficacy in hydroponic root-zone decontamination and carbon sequestration remains poorly characterized. Here, we demonstrated that NH-IBC enhanced the polymerization and humification of dissolved organic carbon in the hydroponic root-zones of ryegrass ( Lolium perenne L.), resulting in a 17.3-fold increase in the dissipation kinetic constant of bisphenol A (BPA, a model endocrine disruptor) relative to the bioenzyme-deficient control. Mechanistically, NH-IBC generated reactive radical intermediates that boosted the copolymerization of root exudates (phenolic acids, amino acids) with BPA, forming water-insoluble, high-molar-mass polymers through stable covalent cross-coupling. This efficient polymerization, coupled with carbon sequestration, reduced BPA phytotoxicity and promoted ryegrass root cell proliferation and elongation. Mass balance and 14 C-ring-labeled BPA analyses confirmed that NH-IBC diminished BPA uptake and subcellular distribution in ryegrass. Hydrophobic BPA oligomers and polymers accumulated primarily in root epidermal and cortical tissues, limiting translocation to the endodermis and edible aerial parts. Our findings present a natural humification-inspired biocatalytic framework to remediate contaminant pollution and sequester carbon, advancing agroecosystem sustainability and improving crop- and animal-derived food safety.
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ENVIRONMENTAL RESEARCH
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2026
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IF 8.2
Shuai Xiao,Tong Wei,Menglan Xu,Tongtong Yu,Wei Wang,Hao Fang,Shi-Wen Lv
Herein, a novel CeO 2 -supported CuO composite (denoted as CuO/CeO 2 ) is rationally designed and synthesized via a facile strategy for peroxymonosulfate (PMS) activation to degrade fluorinated antibiotic (namely florfenicol). Benefiting from the synergistic effects between CeO 2 and CuO, abundant Ce 3+ /Ce 4+ and Cu + /Cu 2+ redox couples and oxygen vacancies are formed in the composite, which can significantly accelerate interfacial charge transfer and provide sufficient active sites. The optimized CuO/CeO 2 catalyst shows exceptional catalytic performance, achieving 95.9% removal efficiency of florfenicol within 16 min, together with excellent pH adaptability, anti-interference capacity, and reusability. The mechanistic analysis reveals that PMS is firstly adsorbed on the CuO/CeO 2 surface to form CuO/CeO 2 -PMS* complexes, which then undergoes disproportionation to produce 1 O 2 . Meanwhile, O 2 •– can also transform PMS into SO 5 •‒ , which further decomposes into 1 O 2 . The nonradical pathway dominated by 1 O 2 is responsible for the degradation of florfenicol, whereas radical species and high-valent copper contribute minimally. All in all, this work provides a high-efficiency strategy for selective 1 O 2 generation in advanced oxidation processes, offering a promising approach for fluorinated antibiotic wastewater remediation.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Shiyu Zhang,Zhiruo Li,Jia Tong,Xingxing Shi,Yue Xu,Lijuan Zhang,Haikuan Yuan,Yan Zhang,Jie Lu
A chiral metal-organic framework, [Zn( NCG )bpy] n (NCG = N-(4-aminobenzoyl)- L-glutamic acid; bpy = 4,4′-bipyridine), was meticulously designed and synthesized for the first time and thoroughly assessed for its extensive chiral recognition abilities. This MOF features an average pore size of 7.12 nm and is constructed from enantiopure N-(4-aminobenzoyl)-L-glutamic acid ligands, which provide functional sites for the highly enantioselective adsorption and separation of various chiral compounds. The chiral recognition ability of [Zn( NCG )bpy] n was initially tested with batch adsorption of ( R )- and ( S )-dropropizine enantiomers at various starting concentrations and solution pH levels. A dispersive solid-phase extraction (dSPE) strategy coupled with high-performance liquid chromatography (HPLC) was then employed to assess its competitive chiral resolution efficacy toward four structurally distinct racemates: ( R , S )-dropropizine, ( R , S )-tetramisole hydrochloride, (D,L)-phenylalanine, and (D,L)-aspartic acid. The [Zn( NCG )bpy] n exhibited remarkable enantioseparation capability toward smaller amino acid molecules, with an enantiomeric excess ( ee ) of 46.17 ± 1.39% and a separation factor of 2.72 ± 0.10 for (D,L)-phenylalanine in a single batch separation. X-ray photoelectron spectroscopy (XPS), combined with the Independent Gradient Model based on Hirshfeld partition (IGMH) isosurface analysis and binding energy computations, elucidated the underlying recognition mechanism at the atomic level. The results conclusively showed that chiral resolution is primarily regulated by non-covalent host-guest interactions.
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Environmental Technology & Innovation
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2026
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IF 7.3
Siyao Wang,Lei Wen,Zhimin Xu,Gang Chu,Kexin Chang,Hongbo Peng,Dandan Zhou,Peng Gao,Yang Liu,Bo Pan
Biochar (BC)-mediated aerobic oxidation of arsenite (As(III)) has been reported, but the coupling among phenol-quinone redox cycling, O 2 activation, and pH-regulated H 2 O 2 formation remains insufficiently resolved. In this study, pine-sawdust-derived BC and molecular analogues of phenolic/quinoid moieties, hydroquinone (HQ) and 1,4-benzoquinone (BQ), were used to examine As(III) oxidation at pH 3.0, 7.0, and 9.5 under oxic and oxygen (O 2 )-limited conditions. Under oxic conditions, BC oxidized 42.4%, 21.6%, and 74.7% of As(III) after 24 h at pH 3.0, 7.0, and 9.5, respectively, whereas arsenate (As(V)) formation was negligible under O 2 -limited conditions. BC generated hydrogen peroxide (H 2 O 2 ) in air-equilibrated suspensions, with maximum concentrations of 88.5, 38.8, and 204.2 μM at pH 3.0, 7.0, and 9.5, respectively·H 2 O 2 -associated pathways contributed an estimated 69.2%, 77.2%, and 67.4% to As(III) oxidation at pH 3.0, 7.0, and 9.5, respectively. Superoxide dismutase suppressed O 2 •- generation without affecting H 2 O 2 accumulation or As(III) oxidation, indicating that O 2 •- primarily served as an intermediate in H 2 O 2 formation. Tert-butanol negligibly altered As(V) formation, consistent with the absence of detectable •OH. The BQ/HQ model system confirmed the chemical feasibility of quinone reduction, HQ re-oxidation by O 2 , and associated H 2 O 2 generation, but it should be interpreted as a molecular analogue rather than direct proof of the heterogeneous BC surface mechanism. Overall, BC mediates As(III) oxidation mainly via O 2 -dependent H 2 O 2 production promoted by phenol-quinone-like redox cycling, while the non-monotonic pH trend (pH 9.5 > pH 3.0 > pH 7.0) reflecting the combined effects of As(III) speciation, surface redox behavior, and H 2 O 2 availability.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Jianwen Hu,Guanzhong Ma,Xinyu Yuan,Junjie Fan,Jian Yang,Jingwen Wang,Chunling Li,Shuangqing Sun
Deep oxidative desulfurization (ODS) of fuels in biphasic systems is fundamentally limited by sluggish liquid-liquid interfacial mass transfer and poor intrinsic affinity between catalysts and hydrophobic sulfur substrates. To overcome these bottlenecks, we rationally designed phosphotungstic acid (HPW)-anchored SiO 2 Janus nanosheets (JNSs) grafted with flexible n-hexyl (C6-JNS@HPW) or rigid phenyl (pH-JNS@HPW) groups to construct a high-efficiency Pickering interfacial catalytic (PIC) system. Systematic evaluation revealed a dynamic competitive mechanism between physical interfacial expansion and molecular electronic interactions. At a low catalyst dosage, flexible C6 chains endow superior dispersibility and a larger reactive interfacial area, achieving a 6.85% higher desulfurization rate than the Ph-modified counterpart. In contrast, pH-modified JNSs exhibit superior reaction kinetics under interface-saturated conditions. DFT calculations confirm that electron-rich Ph groups induce targeted π-π stacking interactions with DBT, optimize the local electronic microenvironment, and synergistically accelerate the deep oxidation of DBT dominated by superoxide radicals. This work shifts the paradigm of multiphase catalyst design from bulk empirical synthesis to precise microenvironmental engineering, providing critical insights into the interplay between interfacial and electronic effects.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Chao Tang,Bing Wu,Guowei Yang,Guangjian Chai,Dian Qu,Chun Chen,Zhihong Yang,Jian Sun,Jianmei Xu,Zhiquan Chen,Qihang Wang,Wei Zhou
Metal organic frameworks (MOF) are widely incorporated into mixed matrix membranes (MMMs) for CO 2 separation. However, the relationship between MOF-induced free volume characteristics and transport behavior remains insufficiently understood. In this work, Pebax MH 1657-based MMMs were prepared using a dual ligand aluminum-based MOF (CAU-PBH), derived from CAU-10-H through partial substitution of isophthalic acid by pyridine-3,5-dicarboxylic acid, as a filler to investigate its effect on the free volume and CO 2 transport properties of the Pebax membranes. It exhibits a microporous structure and a polar chemical environment containing carboxylate and N-heterocyclic groups, which are favorable for CO 2 adsorption and polymer-filler compatibility. The optimized MMM containing 5 wt% CAU-PBH showed a CO 2 permeability of 95.10 Barrer and a CO 2 /N 2 selectivity of 66.64 at 0.2 MPa and 35 °C, approaching the 2008 Robeson upper bound. Quantitative positron annihilation lifetime spectroscopy (PALS) analysis revealed that CAU-PBH incorporation modified the free volume characteristics of Pebax through changes in polymer chain packing and crystallization behavior. The MOF-induced changes in free volume characteristics were closely associated with changes in gas diffusivity, while CO 2 solubility increased markedly. The regulated free volume characteristics, together with the intrinsic micropores and CO 2 affinity sites of CAU-PBH, enhanced CO 2 sorption and contributed to selective transport pathways, thereby improving CO 2 separation performance. These results indicate that the separation enhancement cannot be attributed to a simple change in free volume alone, establishing a PALS-based structure-transport correlation between MOF-induced free volume characteristics and CO 2 transport behavior in Pebax MMMs.
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DENTAL MATERIALS
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2026
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IF 6.3
Tianjia Huang,Huan Chen,Shuwei Qiao,Boyu Sun,Shuyao Zheng,Haiya Liao,Zuosen Shi,Song Zhu
A multifunctional Myr@ZIF-8 nanoplatform was developed for dentin bonding. • Myr@ZIF-8 exhibited pH-responsive release of myricetin and Zn²⁺. • Myr@ZIF-8 enhanced antibiofilm activity against Streptococcus mutans . • Myr@ZIF-8 stabilized dentin collagen and suppressed MMP activity. • The modified adhesive significantly improved dentin bonding durability. Objectives This study aimed to develop a myricetin-loaded ZIF-8 (Myr@ZIF-8)-modified universal adhesive with antibacterial, collagen-stabilizing, and matrix metalloproteinase (MMP)-inhibitory properties to improve bonding durability. Methods Myr@ZIF-8 nanoparticles were synthesized and characterized. Myr loading efficiency, drug loading, and pH-responsive release were evaluated. Myr@ZIF-8 was incorporated into a universal adhesive at 2.5–10 wt%, and the optimal concentration was selected according to degree of conversion, dentin wettability, and antibiofilm activity. Dentin collagen stability, MMP-mediated gelatinolytic activity, microtensile bond strength (μTBS), interfacial nanoleakage, interfacial mechanical properties, and in vitro cytocompatibility were evaluated. Short-term systemic toxicity was preliminarily assessed by oral gavage of cured adhesive extracts. Molecular docking was performed to investigate potential interactions between myricetin and collagen, MMP-2, and MMP-9. Results Myr@ZIF-8 exhibited a Myr loading efficiency of 50.72%, drug loading of 50.36%, and pH-responsive release. The adhesive containing 5 wt% Myr@ZIF-8 showed the best overall performance, including enhanced antibiofilm activity, improved collagen stability, and reduced MMP-mediated gelatinolytic activity. Incorporation of 5 wt% Myr@ZIF-8 increased immediate μTBS from 22.79 MPa to 32.07 MPa and aged μTBS after 10,000 thermocycles from 13.91 MPa to 27.99 MPa. Molecular docking predicted potential interactions between myricetin and collagen, MMP-2, and MMP-9. The modified adhesive showed acceptable in vitro cytocompatibility, with no obvious short-term systemic toxicity after oral gavage of cured adhesive extracts. Significance These findings demonstrate that Myr@ZIF-8 functions as a multifunctional bioactive nanoplatform and represents a promising strategy for improving bonding durability. Download: Download high-res image (189KB) Download: Download full-size image Schematic diagram of the experimental process.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Huidong Tang,Chen Liu,Donggou Sun,Wenbo Zhang,Xiaohua Zhu,Yixing Ma,Jiacheng Bao,Kai Li,Xin Sun,Ping Ning
Fe 2 O 3 /g-C 3 N 4 accelerates Fe redox cycling for efficient H 2 O 2 activation. • g-C 3 N 4 pumps electrons to Fe sites, boosting interfacial charge transfer. • Alkaline microenvironment uniquely steers ROS pathway toward O 2 •− generation. • Process yields 93.2% NO x removal, converting NO into valuable N-resources. To overcome the challenges associated with low-temperature industrial flue gas denitrification, this study presents a highly efficient Fe 2 O 3 /g-C 3 N 4 heterogeneous Fenton catalyst synthesized via a facile impregnation approach. This composite effectively activates H 2 O 2 for deep NO x elimination. Under optimal alkaline conditions, the Fe 2 O 3 /g-C 3 N 4 system achieved a remarkable maximum NO x removal efficiency of 93.2%, while demonstrating exceptional durability by retaining over 80% efficiency across five consecutive reaction cycles. Comprehensive experimental characterization coupled with density functional theory (DFT) calculations reveal that g-C 3 N 4 serves as an electron-rich reservoir. This framework systematically accelerates the rate-limiting Fe 2+ /Fe 3+ redox cycling on the Fe 2 O 3 surface through enhanced interfacial charge transfer. Crucially, the alkaline environment uniquely steers the reactive oxygen species (ROS) evolution pathway toward the highly selective generation of superoxide radicals (O 2 •− ). These predominant O 2 •− species rapidly oxidized NO to form peroxynitrite intermediates, thereby promoting the deep conversion of NO into recoverable nitrate and nitrite products. This work provides a robust and scalable strategy for low-temperature NO ₓ purification and offers new mechanistic insights into how the reaction microenvironment regulates radical selectivity. Download: Download high-res image (294KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）