SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Changjun Xia,Xushuai Chen,Jincui Gu,Panpan Zhang,Chunjia Luo,Ruiqi Zhao,Xiaohan Niu,Luke Yan
Weak intersheet interactions induce interlayer swelling in 2D MXene membranes, limiting their otherwise promising practical application in water purification. Herein, we developed an anti-swelling MXene-based membrane for water purification. Supramolecular hydrogen bonding between MXene and graphitic carbon nitride (CN) nanosheets enabled the formation of a tightly packed structure. Concurrently, covalent interactions involving polydopamine (PDA) and polyethyleneimine (PEI) enhanced cross-linking, which created a nanoconfined interlayer space to suppress swelling. Notably, the MXene/CN@PDA/PEI membrane maintained a stable interlayer spacing of 15.27 ± 0.08 Å even after 700 h of water immersion—outperforming most reported MXene-based membranes. Furthermore, its broad light absorption and narrow bandgap (~2.10 eV) enabled superior self-cleaning performance. In cyclic tests, it retained ~90.7 % flux recovery after 40 h, demonstrating that nanoconfinement effectively suppresses swelling and stabilizes active sites. This study presents an effective approach for developing high-performance MXene membranes featuring anti-swelling and self-cleaning capabilities, aimed at sustainable water purification.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yinghao Li,Ying Li,Qinglong Meng,Jingyi Zhang,Ke Jing,Qingyu Guan
Oxygen vacancies (OVs) are widely used in photocatalytic H 2 O 2 generation for water remediation, and phosphate is a common ion in natural water. However, the potential mechanism regarding how phosphate influences the photocatalytic performance of OVs remains unclear. The role of phosphate in the photocatalytic H 2 O 2 generation by the OVs and subsequent contaminant degradation during OVs photocatalysis was investigated. Phosphates primarily formed complexes with Bi at OVs, altering the local electronic structure and O 2 adsorption pattern of this active site. This reduced the energy barrier for the formation of reactive oxygen species. The formation of complexes at OVs transforms H 2 O 2 generation pathway changed from two-step one-electron to one-step two-electron, thereby increasing H 2 O 2 generation. The H 2 O 2 product exhibited excellent in-situ pollutant treatment performance. This study provides valuable insights for optimizing environmental remediation strategies by exploring the effect of phosphate on the photocatalytic H 2 O 2 generation.
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LANGMUIR
·
2026
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IF 4.4
Guang Li,Lisha Zhang,Iram Hussain,Zhizhen Ye,Jin-Ming Wu
Semiconductor-based photocatalysis using TiO2, ZnO, and related materials offers a promising solution for efficient wastewater treatment through light-assisted advanced oxidation processes. In this study, oxygen vacancy (Ov)-rich ZnO micrometer-sized particles (ca. 0.5 μm) are grown on a conductive carbon cloth via a one-step molten salt method. The effects of different coordinating anions added into the molten salt on the morphological characteristics of the resultant ZnO crystallites are studied. The optimized photocatalyst (CC@ZnO-3 min) achieves near-complete degradation of 20 ppm ofloxacin within 2 h under UV irradiation and in the presence of 5 mM KHSO5 (PMS). In the absence of PMS, it removes 26% of total organic carbon (TOC) after 8 h─a 6-fold improvement over commercial ZnO with an average particle size of ca. 0.2 μm, which is also immobilized on carbon cloth with a similar loading mass of ca. 7.0 mg·cm–2. Radical trapping experiments reveal that superoxide (·O2–) and holes play dominant roles in the degradation process. The engineered oxygen vacancies not only enhance charge carrier separation but also significantly improve electron transfer efficiency. This work presents a strategy for developing high-efficiency photocatalysts to address pharmaceutical pollution.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
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IF 3.8
Xia Yong,Wang Qi,Wang Xu,Shan Liancong,Zhang Bo,Li Sheng,Guo Chang
The accurate and rapid detection of fluoroquinolone antibiotics (FQs) is crucial, yet their structural homology often leads to cross-reactivity that compromise accuracy. Herein, we designed a poly(3,4-ethylenedioxythiophene) doped with a poly(styrenesulfonate) (PEDOT:PSS)-based dual-channel organic electrochemical transistor (OECT) array on a flexible, low-cost polyimide substrate. By leveraging the synergistic catalysis of single-walled carbon nanotubes (SWCNTs) and gold nanoparticles (AuNPs), effective discrimination of three FQs was achieved using gate electrodes modified with only two Nafion/SWCNTs/AuNPs composites, differing solely in AuNP mass fraction—this significantly simplifies fabrication for an electronic tongue system (ETS). Aided by principal component analysis (PCA), the system discriminates and quantifies ofloxacin (OFL), levofloxacin (LEV), and ciprofloxacin (CIP) across a wide concentration range of 0.4–1000 μM, with limits of detection (LODs) of 0.32–0.40 μM, while exhibiting excellent selectivity, anti-interference, consistency, stability, and rapid response. The comprehensive performance of this platform establishes a practical foundation for portable FQ sensing in environmental and clinical applications. Graphical abstract
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 7.7
Songjia Luo,Xianzhi Dou,Lu Wang,Lei Zheng
Chloramphenicol (CAP) residues in milk pose severe health risks, yet current detection methods (e.g., chromatography-mass spectrometry) suffer from complexity and high costs. In this work, we address this gap by developing an ultrasensitive aptamer-gated graphene Field-effect biosensor. A self-assembled Aptamer-functionalized solution-gated graphene transistor (Apt-SGGT) was engineered via systematic optimization of aptamer surface density to overcome spatial-confinement limitations and enhance conformational switching efficiency. We applied the Apt-SGGT biosensor to the analytical determination of CAP in actual skim milk samples, achieving a detection limit as low as 21.5 pM with a spiked recovery rate of 97.65 % ± 5.72 %. This study not only presents a promising platform for the rapid, on-site detection of antibiotic residues in complex food matrices but also provides a generalizable interfacial engineering strategy to enhance the performance of aptamer-based field-effect biosensors.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.6
Yulong Han,Huanhuan Lu,Haili Liu,Hengye Chen,Wei Lan,Xinming Lv,Wanjun Long,Haiyan Fu
In this work, a ratiometric fluorescent sensing platform based on the antenna effect of Tb-doped metal – organic framework (Tb-MOF) was constructed for sensitive and visual detection of enoxacin (Eno). The coordination of Tb 3+ with the β-diketone structure of the Eno molecule activates yellowish-green fluorescence emission through the “antenna effect”. The Tb-MOF fluorescent probe exhibits excellent response-sensitivity and selectivity for Eno with a low detection limit (LOD) of 0.09 μM, showing a good linear response in the concentration range of 0–20 μM. Under excitation with 365 nm ultraviolet light, the fluorescence color of the sensor system gradually changes from blue to yellow-green as the Eno concentration increases. Further, Tb-MOF ratiometric fluorescent sensor combined with cloud-based machine learning algorithm-assisted WeChat Mini Program realized the intelligent quantification of Eno in complex matrices such as honey, milk, and beef was achieved, which overcomes the reliance of traditional methods on large-scale instruments and provides a portable and efficient solution for on-site monitoring of food safety.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 2
·81
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IF 5.3
Zhang Haili,Peng Man,Lu Anjiang,Peng Xishun,Wang Cunwei,Zu Caizhen,Bai Zhongchen
A surface-enhanced Raman scattering (SERS) sensor of Au/Ag nanoparticles (NPs) grown on ZnO/polypyrrole@Poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate) (PPy@PEDOT:PSS) film for detecting norfloxacin (NFX) residues in milk is presented. The ZnO/PPy@PEDOT:PSS film was prepared by the electrochemical deposition method. Subsequently, Ag NPs and Au NPs were deposited on the surface of ZnO/PPy@PEDOT:PSS film to form a Au/Ag/ZnO/PPy@PEDOT:PSS film by an electrochemical deposition process and the magnetron sputtering process, respectively. Owing to the charge transfer between the SERS substrate and the NFX molecules, this SERS sensor could effectively identify low-concentration NFX molecules with a limit of detection (LOD) of 0.84 nM. Moreover, it could also recognize NFX residues in milk with recoveries of 91.2% to 108.4%. The SERS sensor of Au/Ag/ZnO/PPy@PEDOT:PSS film had a high sensitivity, excellent long-term stability, and significant potential in food safety monitoring applications. Graphical abstract
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Journal of Water Process Engineering
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2026
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IF 6.6
Luyao Jin,Jing Xu,Wei Cheng,Zufan Liu,Rémi Marsac,Charlotte Catrouillet,Shiyong Tao
Adsorption of quinolones on urban river sediments was investigated. • Molecular properties control relative adsorption strengths of quinolones. • Organic matter and iron oxide are key sediment controls on adsorption. • Predictive model integrating molecular and sediment factors was established. Quinolone antibiotics have been frequently detected in aquatic environments, where adsorption onto sediments plays a key role in controlling their environmental partitioning. This process is governed jointly by molecular structures and sediment characteristics, yet their coupled effects remain insufficiently quantified. To better understand and predict antibiotic adsorption onto urban river sediments, this study investigated the adsorption behaviors of 10 quinolone antibiotics using 14 sediments collected from urban rivers in Wuhan, China. Saturated adsorption capacities calculated using the Langmuir model ranged from 9.1 to 128.2 μmol g −1 on a selected sediment, spanning over an order of magnitude and reflecting the influence of specific molecular structures. Adsorption extents were revealed to vary with sediment types, emphasizing the role of sediment physicochemical characteristics. Predictive models describing the sediment-water partition coefficient ( K d ) were independently established based on molecular descriptors and sediment characteristics, achieving robust performance (R 2 > 0.80 and > 0.79, respectively). Analysis revealed that dipole interactions, dispersion and induction interactions, and hydrogen bonding associated with molecular structures, together with sediment organic matter and iron oxide contents, exert dominant controls on adsorption processes. Further, by integrating parameters of both molecules and sediments, an integrated predictive model was developed and validated with satisfactory performance (R 2 = 0.712), capturing adsorption behaviors across diverse sediment-compound combinations. These results provide quantitative insights into structure-reactivity relationships of adsorption on natural sediments, and highlight the significance of integrated frameworks for predicting interfacial adsorption processes of organic contaminants. Download: Download high-res image (257KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Junren Zhu,Juanjuan Zou,Ting Peng,Xinyi Li,Chaohan Jiang,Shiyang Bai,Wei Ding,Zhenzhen Jiang
HCO 3 − coordination-enabled high-valent cobalt-oxo pathway absent without HCO 3 − • Quantitative Co(IV) contribution elevation from 2.5% to 28% with bicarbonate • Oxidation pathway switch from radical to non-radical regime by bicarbonate • CoCO 3 SO 3 2− complex identified as kinetically competent intermediate • Efficient performance across real waters with Co dosage below discharge limit Bicarbonate, a ubiquitous constituent of natural waters, is typically regarded as a radical scavenger in sulfate-radical-based advanced oxidation processes (SR-AOPs); however, its coordinative interaction with the catalytic metal center and the consequent modulation of oxidative pathways remain poorly understood. In this work, the role of HCO 3 − in the Co(II)-catalyzed activation of calcium sulfite (CaSO 3 ) was systematically investigated. HCO 3 − species is identified to coordinate with Co(II) to assemble a ternary Co(II) − HCO 3 − −S(IV) complex that facilitates the rate-limiting Co(II)-to-Co(III) oxidation, while the subsequent Co(III) − HCO 3 − complexation prevents Co(III) precipitation and sustains the catalytic cycle. Critically, this coordination is a prerequisite for Co(IV) generation: by depressing the Co(IV)/Co(II) redox potential, it unlocks the otherwise forbidden oxygen-atom transfer pathway, yielding a non-radical oxidant entirely absent without HCO 3 − . Together with 1 O 2 , this HCO 3 − -exclusive Co(IV) pathway operates in parallel with the SO 4 •− radical pathway, redirecting the dominant oxidation mechanism from a radical-driven regime toward a non-radical-driven regime, accompanied by a pronounced reduction in apparent activation energy (37.46 kJ mol −1 ). This system functions effectively across a wide pH, exhibits high tolerance to common anionic interferents, and achieves efficient performance across multiple authentic water matrices. In short, this work establishes HCO 3 − as a coordination-directed switch that sustains the catalytic cycle while uniquely gating access to the Co(IV) oxidation pathway, offering a ligand-engineering strategy for tuning reactive species speciation in S(IV)-based AOPs. The HCO 3 − enhanced- and altered- CaSO3 activation by Co(II). Download: Download high-res image (301KB) Download: Download full-size image
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JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Meng You,Chao Xia,Bo Jin,Qianlong Sun,Bingbing Yuan,Ping Hu,Xinru Hu,Siyi Wang,Jianqiang Meng
Developing nanofiltration (NF) membranes that simultaneously achieve high water permeance and selectivity remains a fundamental challenge due to their inherent permeability-selectivity trade-off. Herein, we report a monomer diffusion regulation strategy using amphiphilic sulfonated resorcinarenes (SRA) to fabricate high-performance polyesteramide NF membranes. Incorporated SRAs lower interfacial tension, facilitate PIP diffusion, and self-assemble into physical template aggregates. Driven by the kinetic competition between SRA hydroxyl groups and PIP amines for TMC stemming from their reactivity difference, SRAs temporarily retard crosslinking at SRA-rich sites while their amphiphilicity directs PIP toward adjacent regions to resume polymerization. This kinetic competition, combined with post-encapsulation collapse of SRA assemblies, yields polyesteramide membranes with characteristic crater-like structures and abundant nanovoids within the selective layer. These features increase the effective permeable area and reduce mass transfer resistance. The optimized membrane delivers a water permeance of 26.3 L m −2 h −1 bar −1 , with Na 2 SO 4 rejection of 98.87%, and a Cl − /SO 4 2− selectivity factor of 409.4 in mixed salt feed (1000 ppm Na 2 SO 4 +1000 ppm NaCl). SRA-PIP/TMC membranes achieve improved rejection toward organic micropollutants (OMPs), especially negatively charged hydrophobic species such as ofloxacin and chloroquine phosphate, through the synergistic effects of size sieving, Donnan repulsion, and host-guest inclusion within resorcinarene cavities. Benefiting from ester linkages, the membranes possess good chlorine resistance. This work demonstrates the potential of amphiphilic macrocycle co-monomers for regulating polymerization toward the preparation of high-performance NF membranes for water purification and precise molecular separation.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yingfei Wang,Yuqiong Li,Fengliang Wang,Chuanhao Li
Recovering H 2 energy from photocatalytic treatment of antibiotic-contaminated wastewater is considered an appealing strategy to mitigate the energy crisis and environmental issues. Herein, we present a hard-template-assisted molten-salt pyrolysis strategy to synthesize mesoporous carbon nitride with a highly crystalline structure (mpg-CCN), which was utilized for the integrated adsorption-photocatalytic degradation of FQs and the conversion of wastewater to hydrogen. mpg-CCN exhibits excellent photocatalytic performance with an H 2 evolution rate of 10,482.5 μmol/g and an optimal FQs degradation efficiency of 98.6% after 10 h of visible light irradiation. Experimental and theoretical calculation results disclose that the unique mesoporous structure of mpg-CCN improves the surface diffusion and adsorption of FQs. In addition, the highly crystalline structure provides unblocked channel for the transfer of photo-induced charges and accelerates both H 2 evolution and FQs degradation kinetics. Significantly, mpg-CCN can be effectively utilized for the ex-situ remediation of FQs, enabling recovery from the adsorbed pollutants via simple light treatment.
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Laser & Photonics Reviews
·
2026
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IF 9.7
Binbin Su,Jiahui Wei,Chenning Sun,Maxim S. Molokeev,Nicolay N. Golovnev,Yayun Zhou,Huidong Xie
Developing blue-light-excitable narrow-band green-emitting materials is crucial for next-generation backlight displays. Here, we designed and synthesized a novel 0D hybrid bismuth halide, (OfloH 2 ) 2 Bi 2 Cl 10 ·3H 2 O (OBCH), using optically active ofloxacin (OFL) as the organic component. Under blue excitation, it exhibits bright narrow-band green-emission peaks at 515 nm. Although OBCH retains the intrinsic green emission originating from protonated OFL solution, its fluorescence exhibits a narrowed FWHM of 59 nm, attributed to enhanced structural rigidity resulting from the rigid bismuth halide framework and the layered stacking of organic cations. Benefiting from its strong blue light excitation, narrow FWHM, a stable white light-emitting diode device was fabricated by combining the 460 nm blue InGaN LED chip, green-emitting OBCH, and red-emitting KSF: Mn 4+ with a luminous efficiency of 92.34 lm/W and a wide color gamut of 109.2% sRGB standard. This work not only provides a universal strategy for utilizing rigid and stable metal halide lattices as “reactors” to confine and modulate the photophysical behavior of organic luminophor, thereby unlocking superior performance unattainable in their free state, but also offers new insights for designing next-generation high-performance luminescent materials.
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