ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 28
·20891-20900
·
IF 7.3
Wang Tianze,Zhang Bo,Liu Liming,Wan Yizhen,Zheng Xiaoling,Liu Huijun,Zhai Yuxin,Zhou Lele,Qian Weiping
Real-time
monitoring of interfacial lipolysis is critical for understanding
lipid metabolism and food digestion but remains challenging for traditional
analytical techniques due to the complexity of heterogeneous lipid-aqueous
interfaces. Here, a label-free optical interferometric method based
on three-dimensional ordered polystyrene inverse opal (PS-IO) films
for the dynamic analysis of lipolysis was reported. The PS-IO films,
featuring higher porosity and hydrophobicity, serve as a high-specific-surface-area
host for triglyceride immobilization, forming a sensitive optical
layer for interferometric biosensing. As lipase enters the layer and
hydrolyzes lipids, the mass fluctuation induces a shift in Fabry-Pérot
fringes, which was captured and converted to a change in optical thickness
by self-developed ordered porous layer interferometry (OPLI). Using
an optimized lipolysis model, the analytical system exhibited a linear
response to lipase concentrations ranging from 1 to 200 U/L. Furthermore,
the high temporal resolution of the system enabled the derivation
of Michaelis–Menten kinetic parameters. The optical interferometry
platform was successfully applied to discriminate the digestion of
triglycerides with varying degrees of unsaturation and commercial
edible oils, revealing that unsaturation correlates with lipolysis
rates due to the steric structure of lipid molecules at the interface.
This methodology provides an effective and quantitative tool for probing
the lipolysis of triglycerides with different unsaturation and evaluating
the digestion behavior of edible oil in the food industry and physiological
systems.
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COMPOSITES COMMUNICATIONS
·
2026
·
IF 8.6
Xiuwen Gao,Jinhui Tan,Chong Lin,Gao Pan,Huixing Li,Fangwei Qi,Xin Li,Shuping Peng,Cijun Shuai
Photo-thermoelectric-driven vanadium valence cycling enhanced ROS generation. • NIR-triggered electrical stimulation activated calcium signaling for osteogenesis. • Synergistic antitumor and antibacterial efficacy was achieved through self-enhanced chemodynamic and thermoelectric catalysis therapy. • A multifunctional scaffold achieved tumor/bacteria elimination and bone repair. The peroxidase-like activity of vanadium carbide MXene (V 2 C) nanozyme drove the valence transition from V 3+ to V 4+ , and catalyzed hydrogen peroxide to generate reactive oxygen species (ROS) for eliminating tumor and bacteria, exhibiting potential in post-resection osteosarcoma therapy. However, V 4+ could not spontaneously reduce to V 3+ , interrupting the generation of ROS. To address this, a scaffold strategy based on photo-thermoelectric driven valence cycle was proposed. Specifically, Bi 2 Te 3 @V 2 C heterojunction was constructed via electrostatic self-assembly and then incorporated into poly(L-lactic acid) scaffold using additive manufacturing technology. X-ray photoelectron spectroscopy results demonstrated that under near-infrared light irradiation, photo-thermoelectric bismuth telluride (Bi 2 Te 3 ) generated electrons via the Seebeck effect, which efficiently reduced V 4+ to V 3+ , thereby achieving vanadium ion valence cycling and enhancing ROS production. Simultaneously, the photothermal effect of Bi 2 Te 3 enhanced peroxidase-like reaction efficiency. Furthermore, Bi 2 Te 3 triggered redox reactions through thermoelectric catalysis properties, thereby elevating ROS production levels and further enhancing antitumor and antibacterial efficacy. The scaffold-generated ROS induced mitochondrial dysfunction and apoptosis in tumor cells, while also causing the leakage of bacterial intracellular substances to reduce implant-related infection risks. The experimental results showed that both its antitumor and antibacterial rates exceeded 95%. Moreover, the scaffold delivered non-invasive electrical stimulation through photo-thermoelectric conversion, which activated calcium signaling pathways to promote bone repair. This study provided a multifunctional scaffold with antitumor, antibacterial and osteogenic capabilities.
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DESALINATION
·
2026
·
IF 9.9
Cheng Chen,Cunxiu Zhang,Shengyi Wang,Wanneng Yu,Yuxiu Dong,Yuezi Huang,Mingming Guo
Oxidative polymerization strengthens PPy hydrogels and optimizes evaporation enthalpy. • Ti 3 C 2 T x -PPy multilevel channels guide salt crystallization to evaporator edges. • Ti 3 C 2 T x -PPy evaporator delivers 4.63 kg m −2 h −1 , 35% higher than PPy. Solar-driven interfacial evaporation, which relies on localized photothermal conversion at the gas-liquid interface, represents an effective strategy for seawater desalination. However, continuous salt crystallization and deposition at the evaporation interface remain a critical bottleneck that limits long-term operational stability. Herein, we develop a Ti 3 C 2 T x -PPy composite hydrogel evaporator with multilevel mass-transport channels for solar seawater desalination and spatial regulation of salt crystallization. The incorporation of Ti 3 C 2 T x optimizes the internal pore network of the polypyrrole hydrogel, establishing hierarchical mass-transport pathways that promote the preferential migration of salts towards the evaporator edges, where crystallization subsequently occurs. Meanwhile, Ti 3 C 2 T x enhances the photothermal conversion capability of the system and modulates the hydrogen-bonding structure of water molecules, thereby effectively lowering the evaporation energy barrier. Under 1 sun illumination, the Ti 3 C 2 T x -PPy evaporator achieves an evaporation rate of 4.63 kg m −2 h −1 , while maintaining a clean surface and undiminished performance after 50 h of continuous operation. The evaporator also exhibits purification efficiencies exceeding 99% in hypersaline solutions, dye-contaminated wastewater and real seawater, and delivers an average daily water yield of over 25 L m −2 under natural sunlight. This work provides a promising strategy for the design of hydrogel-based solar desalination systems with high efficiency, excellent salt resistance and long-term operational stability. Download: Download high-res image (150KB) Download: Download full-size image
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Jiahui Hou,Jiale Ai,Mingqi He,Yang Wu,Lingniu Yang,Yingjie Yuan,Xuanhao Lao,Artem V. Kuklin,Liang Chen,Hans Ågren,Lingfeng Gao,Youju Huang
Ti 3 C 2 MXene has frequently been applied in photodetection, while there are few works directly utilizing Ti 3 C 2 MXene as an active material due to the fast carrier recombination. The construction of MXene-based heterojunctions have been demonstrated to further enhance the photo-response performance. In this work, a Ti 3 C 2 @TiO 2 heterojunction was fabricated by an in situ oxidation approach and used to construct a photoelectrochemical photodetector. The as-fabricated photodetector exhibits a narrow-spectrum response (334–380 nm), with an optimized photocurrent density of 6.43 µA/cm 2 and a photoresponsivity of 5057.14 µA/W. Benefiting from interface engineering, the Ti 3 C 2 @TiO 2 -based photodetector possesses excellent stability and sensitive response to chromium. A large range of 10 −12 –10 −6 M could be achieved in a tea water matrix with an ultra-low detection limit of 7.6 × 10 −12 M. We anticipate that this study will provide an effective approach for the design of MXene-based photodetectors and pave the way for online chromium monitoring sensors in particular.
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HYDROMETALLURGY
·
2026
·
IF 6.3
Gengjin Zhang,Yanfang Huang,Longfei Jia,Tianze Chen,Yizhuang Wang,Shengpeng Su,Wenjuan Wang,Hu Sun,Guihong Han
Novel peroxo-complexation strategy was used to purify Nb-rich solution. • NbOF 5 2− transformation to NbO 2 F 5 2− greatly lowers its binding energy with MIBK. • Selectivity coefficient for Sb over Nb was enlarged by over 2300 times. • Nb 2 O 5 product met the high-purity specifications regarding Ta and Sb impurities. The efficient separation of Ta and Sb from Nb in hydrometallurgical processes remains a significant challenge due to their similar chemical behaviors. In this study, a novel peroxo-complexation strategy was introduced to enhance the selectivity of methyl isobutyl ketone (MIBK) extraction in an HF-H 2 SO 4 system. With the addition of H 2 O 2 , the extraction efficiencies of Ta and Sb reached 99.6% and 99.7%, respectively, while the co-extraction of Nb was only 2.32%. The selectivity coefficients of Sb/Nb and Ta/Nb significantly increased from 0.63 and 34.7 to 1461 and 6501, respectively. Stepwise stripping using H 2 SO 4 and pure water effectively recovered Nb and Ta/Sb from the loaded organic phase. Raman spectroscopy and quantum chemical calculations elucidated the mechanism of the enhanced separation selectivity. The peroxo-ligand selectively coordinates with Nb to transform it from NbOF 5 2− to NbO 2 F 5 2− , thereby weakening the negative surface potential of the fluorine atoms bonded to Nb. The binding energy between Nb ions and MIBK decreases from −172 kJ mol −1 to −104 kJ mol −1 , and thus the disparity in the affinity of Nb ions and Ta/Sb ions for MIBK is magnified. Overall, this peroxo-coordination approach provides an efficient and simple pathway for the effective purification of Nb solutions. Download: Download high-res image (176KB) Download: Download full-size image
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Journal of Environmental Sciences
·
2026
·
IF 6.5
Xuetong Qu,Yanan Wang,Kenan Chen,Xin Cheng,Jibo Dou,Yunfei He,Shuai Zhang,Jiafeng Ding,YuChi Zhong,Hangjun Zhang
Heavy metals and PCDD/Fs in fly ash from 32 MSWIs in Zhejiang were assessed. • Zn, Pb, and Cu dominated heavy metal profiles, PCDD/Fs were below thresholds. • Heavy metals and PCDD/Fs showed different spatial distribution patterns. • Heavy metals pose relatively high health and environmental risks. • PCDD/Fs pose high non-carcinogenic risk, especially for children. The occurrence of hazardous heavy metals and polychlorinated dibenzodioxins and dibenzofurans (PCDD/Fs) in fly ash from municipal solid waste incinerators (MSWIs) has raised increasing environmental concern. In this study, fly ash samples collected from 32 MSWIs across Zhejiang Province were analyzed to investigate the contamination levels, spatial heterogeneity, health, and environmental risks of heavy metals and PCDD/Fs. The results showed that several heavy metals exceeded their element-specific intervention thresholds, whereas the toxic equivalent concentrations of PCDD/Fs remained below the intervention thresholds of 3 μg TEQ/kg. Based on the sampled MSWIs, relatively higher heavy metal contamination levels were observed in several northern and southern sampling areas, particularly Huzhou and Wenzhou. Relatively higher PCDD/Fs levels were observed in some southeastern coastal sampling areas, including Taizhou and Wenzhou. Health risk assessment identified Cd, Cr, Pb, and Sb as the major contributors to potential human health risks, while ecological risk assessment indicated that Pb and Cu were the dominant ecological risk contributors. Although PCDD/Fs showed no significant ecological risk under the applied assessment framework, cumulative exposure to the 17 toxic congeners suggested a potential non-carcinogenic health risk, with the estimated risk for children being 3.64 times higher than that for adults. Overall, this study provides a province-wide characterization of the contamination levels, spatial distribution, health, and environmental risks of heavy metals and PCDD/Fs in representative MSWIs fly ash in Zhejiang Province, offering useful evidence for regional fly ash pollution control, risk prioritization, and environmental management. Download: Download high-res image (454KB) Download: Download full-size image
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 9
·631
·
IF 5.4
Li Jiejun,Wang Hui,Li Xinyi,Zhao Pengcheng,Fei Junjie,Xie Yixi
Amaranth (AM) is a widely used synthetic azo food colorant that poses severe toxicological risks upon excessive consumption, creating an urgent need for its ultra-sensitive detection. We report a high-performance electrochemical sensor based on the electrostatic co-aggregation of V 2 O 3 @NC and NHCS for the high-fidelity quantification of AM. A unique “capture-and-catalysis” synergistic mechanism governs this composite interface. Specifically, the highly porous NHCS framework provides exceptional capacity to capture and pre-concentrate target molecules while acting as a highly conductive “electronic bridge.” Subsequently, the abundant mixed-valence (V 3+ /V 5+ ) sites of the V 2 O 3 @NC serve as a robust electrocatalytic engine to drive the catalysis, significantly amplifying the AM oxidation signal. Combining electrochemical kinetic analysis with DFT calculations (including HOMO and MEP), we reveal that this electrocatalytic evolution proceeds via a directional 1 H + /2e − transfer mechanism. Under optimal conditions, the V 2 O 3 @NC/NHCS sensor exhibits a broad linear range (0.01–12 µM) and an extremely low LOD of 0.80 nM. Practical analysis of commercial beverages yielded recoveries of 95.0%–104.3%, with results perfectly matching orthogonal UV-Vis cross-validation. This work provides a robust platform for azo dye screening and profound insights into the rational design of “capture-and-catalysis” composite interfaces. Graphical abstract
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Journal of Physical Chemistry C
·
2026
·
IF 3.4
Chu Sun,Rui Bi,Chunhui Song,Deyang Zhao,Zhiguo Zhu,Kaixuan Yang,Christophe Len,Hongying Lü,Ting Su
2,5-Diformylfuran (DFF) is an important biomass-derived platform chemical, widely recognized as a key intermediate building block in the synthesis of biodegradable polymers and pharmaceutical compounds. The mild and sustainable nature of photocatalysis has attracted considerable attention for such valorization processes, highlighting the need for in-depth exploration of heterostructure-based photocatalysts to enhance catalytic performance. In this study, we report the fabrication and photocatalytic application of a Nb2CTx MXene/ZnIn2S4 (ZIS) Schottky heterojunction with intimate interfacial contact. This heterostructure significantly enhances the separation efficiency of photogenerated charge carriers while prolonging their lifetime. The observed enhancement is attributed to the synergistic interaction between the n-type ZIS semiconductor and the two-dimensional metallic conductor MXene, which induces favorable band bending in ZIS and facilitates the formation of a Schottky barrier at the MXene–ZIS interface. This barrier effectively inhibits electron backflow, thereby promoting charge carrier separation and enhancing interfacial charge dynamics. Compared to pristine ZIS, the Nb2CTx/ZIS heterojunction catalyst achieves a significantly higher DFF yield under ambient temperature and pressure, without the need for additional oxidants. This finding not only demonstrates a highly efficient route for DFF production under mild conditions but also offers a new design strategy for MXene-based Schottky heterojunctions in biomass valorization via photocatalysis.
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Journal of Physical Chemistry C
·
2026
·
IF 3.4
Hu Jinying,Zhang Senlin,Huang Zhaohui,Zhan Ruoning,Fang Bin,Xie Xiuqiang,Weng Bo,Zhang Nan
The sensitization of semiconductors with organic photosensitizers
represents an effective strategy for broadening their light absorption
range, and increasing attention has been paid to the development of
organic photosensitizers with a response to near-infrared (NIR) light.
Notably, the influence of the photothermal effect induced by NIR on
the performance of sensitized semiconductor systems, especially on
the generation and separation of charge carriers, remains unclear.
Herein, we construct a bis-tetraminobenzoquinone (TAQ)-sensitized
TiO 2 system via a facile in situ solvothermal method to
enable the light absorption of the composite up to ca. 1600 nm. Under
visible–NIR light irradiation, the optimal TiO 2 /TAQ
demonstrates a hydrogen evolution activity of 11.25 μmol g –1 h –1 , confirming that the photogenerated
electrons produced by TAQ can transfer to TiO 2 for proton
reduction. Notably, upon excluding NIR light, the TiO 2 /TAQ
composite exhibits enhanced hydrogen evolution performance (up to
26.44 μmol g –1 h –1 ). Thermal
images reveal that TAQ generates a significant photothermal effect
under visible–NIR light. The temperature-controlled experiments
and characterizations suggest that while elevated temperature helps
to suppress charge carrier recombination and reduce charge-transfer
resistance in the TiO 2 /TAQ-sensitized system, it simultaneously
hinders the generation of charge carriers in TAQ. Such double-edged
effects ultimately diminish the photocatalytic activity of TiO 2 /TAQ under visible–NIR light as compared to visible
light irradiation. This work provides new insights into the generation
and transfer of charge carriers from the photosensitizer under NIR
light and offers guidance for the future development of highly efficient
organic–inorganic sensitization systems.
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LANGMUIR
·
2026
·Vol. 42
·期 29
·21195-21206
·
IF 4.4
Liu Qixin,Zhu Manyu,Li Shanshan,Zhang Yuqi,Li Zihao,Wang Yiran,Wu Lie,Ishibashi Takaaki,Jiang Xiue
Accurately understanding the water structure around multiple
groups
and their synergistic effect at electrified interfaces has been challenging
due to the complexity of the interface. The interfacial chiral symmetry-breaking
effect leads to differences in the spatial distribution of functional
groups and the consequent water structure, thereby providing a possibility
for the accurate analysis of molecular group-associated water. On
the basis of this model and combined with surface-enhanced infrared
absorption spectroscopy and ab initio molecular dynamics simulation,
we have systematically investigated the precise water structure around
carboxyl and amino groups, including the influence of carboxyl groups
on tetrahedrally coordinated water, the effect of amino groups in
tightening the surrounding water organization, and their synergy in
directing the first-layer water toward the surface. The presence of
methyl groups can enhance the interaction between amino groups and
water due to their electron-donating function. Furthermore, we revealed
a ligand-induced enhancement in the hydrogen evolution reaction at
the single group level. Our research provides a new methodology for
obtaining comprehensive insights into the impact of each functional
group, how they synergize to regulate the water structure and proton
reduction in complex systems, and their contribution to proton-coupled
electron-transfer reactions.
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Small
·
2026
·
IF 11.8
Zheng Wang,Yuhao Wu,Chunli Liu,Yi Zhang,Liguo Qin,Shan Lu,Yusen Luo,Sheng Li,Zhenjiang Cao,Ming Xu,Kai Xi,Peiping Yang,Guangneng Dong
MXene has emerged as a promising two-dimensional (2D) lubricant additive due to its layered structure, low interlayer shear strength, and tribochemical activity. However, their structural instability under oxygen-containing and high-temperature conditions often leads to oxidation and decomposition, which severely limits their practical use in lubrication systems. In this study, instead of suppressing this transformation, we harness the tribochemically induced in situ evolution of MXene to construct a self-adaptive lubricating interface for low friction and wear under oil lubrication. Comprehensive interfacial characterizations reveal that tribological loading drives the transformation of MXene into a highly graphitized carbon-rich tribofilm, while coordination interactions between oleic acid (OA) and MXene facilitate carbon reconstruction at the sliding interface. Reactive molecular dynamics (RMD) simulations further demonstrate that friction-induced shear promotes Ti–C bond dissociation and carbon graphitization, providing atomistic insights into the dynamic interfacial reconstruction process. The combined effects of tribochemical transformation and molecular coordination promote the formation and progressive reconstruction of a robust graphitized tribofilm, thereby sustaining low friction and enhancing wear resistance. This work provides new insights into the tribological behavior of MXene-based additives and highlights their potential for high-performance lubrication in advanced mechanical systems.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 28
·14730-14745
·
IF 3.9
Pang Jialin,Li Hao,Dong Yuting,Zhu Yao,Xu Jicheng,Yuan Ziyu,Dai Yuting,Zhang Tao,Yang Dongya,Qiu Fengxian
Mercury pollution poses a substantial threat to human
health and
the ecological environment, with the predominant source being the
discharge of Hg 2+ from industrial wastewater. Adsorption
is considered one of the most promising technologies for the removal
of Hg 2+ from wastewater. In this work, a millimeter-scale
bead-type composite adsorbent, denoted as MIL-101-NH 2 @MXene/SA-Ca 2+ -PAA (MNM-ACP) beads, was fabricated through the in situ
synthesis of amino-functionalized MIL-101 on MXene, followed by its
incorporation into the ACP 3D aerogel network. The maximum Hg 2+ adsorption capacity reached 288.8 mg g –1 at an initial Hg 2+ concentration of 300 mg L –1 under the conditions of pH 5 and 45 ° C. Combining kinetic and
isotherm model fitting with characterization analyses revealed that
the primary mechanisms for Hg 2+ adsorption onto MNM-ACP
beads involve coordination, surface complexation, electrostatic interaction,
and ion exchange. Thermodynamic analysis revealed positive ΔH
and negative ΔG values, indicating that the adsorption process
was spontaneous and endothermic. In addition, the MNM-ACP beads exhibited
high selectivity, excellent resistance to ionic interference, and
maintained over 75% of their initial adsorption capacity after five
adsorption–desorption cycles. The dynamic adsorption behavior
in the fixed-bed column was well described by the Yoon-Nelson model.
This strategy achieves efficient Hg 2+ removal while addressing
the practical issues of inconvenient handling and difficult recovery
associated with conventional powdered adsorbents.
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