LANGMUIR
·
2026
·Vol. 42
·期 30
·22338-22349
·
IF 4.4
Gao Xing,Xiang Yan,Guo Wenjun,Xu Tao,Wang Zhoujie,Xu Longhua,Sun Wei,Xie Lei
Hetero-aggregation between serpentine and sulfide minerals
represents
a persistent challenge in the efficient recovery of valuable metals
from complex ores, while most existing depressants suffer from limited
selectivity, insufficient suppression efficiency, or environmental
and toxicity concerns, restricting their application in sustainable
mineral processing. Herein, we report for the first time the use of
a phosphorylated nanocellulose biopolymer as a highly selective and
environmentally benign depressant to overcome serpentine-induced interference
in sulfide flotation, and elucidate the selective depression and interfacial
mechanism. Phosphorylated cellulose nanofibers (P-CNF) and phosphorylated
cellulose nanocrystals (P-CNC) were synthesized by introducing phosphate
functional groups, resulting in a marked enhancement in pyrite flotation
performance, with recoveries exceeding 88.0% and reaching 89.6% for
P-CNF. The exceptional separation efficiency arises from the highly
selective adsorption of phosphorylated cellulose on the serpentine
MgOH plane, with a surface coverage of 96.32% on serpentine compared
to only 0.28% on the pyrite surface. This pronounced selectivity induced
a reversal of the serpentine surface charge, thereby transforming
pyrite–serpentine interactions from electrostatic attraction
to strong repulsion. Force-resolved atomic force microscopy measurements
provided direct nanoscale evidence for this transition, revealing
a dramatic reduction in adhesion forces from ∼9.81 mN m –1 to ∼1.25 mN m –1 (P-CNC)
and ∼0.10 mN m –1 (P-CNF). Moreover, phosphorylated
nanocellulose promoted the flocculation of fine serpentine particles
via polymer-bridging effects, leading to the enlarged aggregates and
effective suppression of mechanical entrainment. This work establishes
phosphorylated nanocellulose as a novel green depressant platform
and provides molecular insights into interfacial interactions governing
complex mineral separation, thereby enabling the rational design of
sustainable reagents and advancing resource-efficient environmentally
interfacial responsible mineral processing.
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LANGMUIR
·
2026
·Vol. 42
·期 28
·20126-20142
·
IF 4.4
Xiang Xinyue,Wang Yaning,Shi Xincui,Zhou Chen,Zou Chenyang
Water-based anticorrosion coatings offer advantages such
as low
volatile organic compound emissions and sustainable processing. However,
their inherent hydrophilicity and tendency to form microcracks limit
their long-term barrier performance. In this study, we developed a
water-based polyaniline based smart coating, PD@PANI/P-PVA, by encapsulating
photothermal-responsive polydopamine nanoparticles and fluorescent
indicators in PANI-shell microcapsules. This coating provides both
active corrosion protection and real-time damage visualization. We
systematically investigated the effects of the microcapsule contents
on the coating’s dispersion and anticorrosion performance.
The results showed that the dispersion of PANI in the aqueous system
was significantly improved with the incorporation of poly(vinyl alcohol)
and polystyrenesulfonate. Due to the corrosion inhibition effects
of polyaniline and polydopamine, the coating containing 1 wt % PD@PANI/P-PVA
exhibited enhanced anticorrosion performance. After 20 days of immersion,
its impedance modulus was 2 orders of magnitude higher than that of
the blank coating. By utilizing the synergistic photothermal effect
between polyaniline and polydopamine, the PD@PANI/P-PVA coating showed
a significant temperature increase after 10 min of UV irradiation,
indicating its potential for photothermal-assisted defect repair and
triggered release behavior. These results suggest a preliminary self-healing
capability and stimulus-responsive functionality rather than fully
validated autonomous healing. These coatings exhibit broad potential
for applications in fields such as shipping and construction. Future
work could focus on further improving their photothermal response
efficiency and long-term environmental stability, thereby advancing
their engineering applications in highly corrosive environments.
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AICHE JOURNAL
·
2026
·
IF 4.4
Yue Zhao,Shan Ni,Wang Yao,Yafeng Liu,Wenjie Wang,Huizhou Liu,Liangrong Yang
The development of uranium separation materials is essential to ensure a stable uranium supply for energy and to mitigate environmental risks. We report a two-dimensional ferrocene-vanadyl phosphate composite (fc-VOP) with expanded interlayer spacing (9.8 Å) and adsorption–reduction coupling function, made by solvent-assisted intercalation. This enables efficient uranium capture via optimized interlayer structure and interfacial properties. Interlayer expansion facilitates uranyl ion transport, accelerating adsorption kinetics, while the coupling function elevates interfacial concentration gradients to enhance ion binding, boosting capacity. The fc-VOP shows a theoretical adsorption capacity of 1968.60 mg/g (pH = 4, pure nitrate solution) with equilibrium in 30 min. It also performs well in spiked matrices, achieving 336.4 mg/g in leachate and 248.2 mg/g in seawater. This work provides a viable route to improve 2D phosphate materials for uranyl adsorption and offers mechanistic insights into designing adsorption–reduction coupling materials.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Yuqing Ding,Yuwen Zhao,Ni Zhao,Haoran Zhang,Shuyun Duan,Xiaoyi Pan,Xia Gao,Xialin Chen,Liang Cao,Chenfeng Zhang,Zhenzhong Wang,Wei Xiao
Although spectral and chromatographic analysis are broadly applied to compound detection, the quality characterization of complex multicomponent systems remains a persistent challenge. Current analytical paradigms emphasize single-component quantification, lacking compositional coherence in highly coupled chemical systems. Therefore, it is crucial to develop an integrative strategy that enables effect-oriented variable selection and quantitative prediction based on information-rich but low-cost measurements. Using Reduning Injection as a representative case, this study quantitatively characterized 18 components by multi-wavelength fused high-performance liquid chromatography, evaluated antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl free radical scavenging assay, and identified 11 antioxidant activity-associated components based on spectrum-effect relationship analysis. These components were further analyzed by network pharmacology and molecular docking, providing theoretical mapping of biological networks. Prediction models were then developed using ultraviolet, near-infrared, and UV-NIR fusion spectral data for the selected components. Low, Mid, and High-level data-fusion strategies were subsequently employed to optimize the model performance. Among the three UV-NIR fusion levels, all fusion strategies outperformed the single-spectrum models. Mid-level data fusion showed the best overall predictive performance, with MLPRegressor yielding the optimal results among the tested models (mean R 2 p = 0.951, RMSEp = 0.036, and RPDp = 4.398). These results suggest that the predictive advantage of UV-NIR fusion depended not only on inter-spectral complementarity, but also on effective optimization of the fused feature space. Overall, this study developed an activity-oriented quality evaluation framework that integrates chemical profiling, effect-related component screening, and rapid spectral prediction, providing an integrative approach for the quality characterization and consistency evaluation of TCM preparations.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Rongjie Lin,Hai Zhang,Zhuhang Dai,Zihong Wei,Sihui Zhong,Chenghao Xiong,Weilang Hu,Yuansong Feng,Yuhao Dong,Yaxiaer Yalikun,Chenjing Shang,Huaping Wu,Yang Yang
Flexible pressure sensors offer unique advantages for deep-sea exploration, yet balancing sensitivity, range, and environmental robustness—especially under extreme hydrostatic pressure and temperature gradients that induce signal drift—remains challenging. Here, we report a fully integrated iontronic pressure sensor for ocean exploration. Through co-design of a gradient-microstructured ionogel with a linear-elastic polyurethane spacer, the sensor achieves an unprecedented broad linear sensing range of 0–10 MPa, sensitivity of 98.4 kPa −1 , and exceptional linearity ( R 2 = 0.996). Notably, the sensor retains repeatability and signal stability under hydrostatic loading up to 55 MPa. Field deployments on a remotely operated vehicle and a manned submersible at depths of ∼1353 and ∼2359 m confirmed stable performance in the bathyal zone. An ultra-low-power embedded system (quiescent current: 4 µA) integrated with a thermal compensation algorithm enables autonomous data acquisition, suppressed temperature-induced drift, and correction accuracy exceeding 95%. This integrated iontronic platform addresses unmet needs for next-generation deep-sea monitoring and enables reliable in situ oceanographic sensing.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Xiaoyang Fu,Suozhu Wu,Qianda Zhang,Hongli Pian,Xiu Zhao,Xiayu Song,Zhuo Shi,Chunyong Li,Yanfen Cheng,Junlong Meng,Shurong Wang
An electrochemical sensor was fabricated via a one-step electrodeposition method. • An ultra-wide response range (1.00 × 10 −12 M to 1.00 × 10 −4 M) was obtained. • An ultra-low detection limit (2.14 × 10 −13 M) was achieved. • This sensor was simple, highly selective and practical. A gold nanoparticle-poly(2-aminophenylboronic acid) composite modified gold electrode (AuNPs-poly(2-APBA)/Au) was fabricated for the first time by electrodeposition, which achieved the measurement of picomolar-level fluoride ions (F − ). Using potassium ferricyanide (K 3 Fe(CN) 6 ) as the redox probe, the specific binding of F − to the boronic acid groups in poly(2-APBA) generated negatively charged complexes, which hindered the electron transfer of K 3 Fe(CN) 6 on the electrode surface. Quantitative analysis of F − was realized by monitoring the decline in the K 3 Fe(CN) 6 reduction peak current. The sensor exhibited an ultra-wide response range (1.00 × 10 −12 to 1.00 × 10 −4 M), an ultra-low limit of detection (2.14 × 10 −13 M) and limit of quantification (5.35 × 10 −12 M) with good robustness, precision, ruggedness, and shelf life, and high selectivity. This sensor demonstrated significant advantages in fabrication simplicity, detection sensitivity, response range, and practical applicability, which could be successfully applied to determine F − in Agrocybe aegerita , shrimp and tap water samples, providing an efficient and sensitive analytical method for food safety assessment and environmental monitoring. Download: Download high-res image (137KB) Download: Download full-size image
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Jiahui Liu,Xiaorui He,Yue Wang
One-step MXene/CNTs-COOH/CS/IL sensing interface was constructed. • CNTs-COOH alleviated MXene restacking and promoted electron transport. • CS and ionic liquid enhanced metal-ion enrichment and ionic transport. • The sensor simultaneously determined Cd 2+ , Pb 2+ , Cu 2+ , and Hg 2+ . • Real-water results agreed well with ICP-MS measurements. Rationally coordinating ion accessibility, electron transport, metal-ion enrichment, and film stability within a facile electrode architecture remains challenging for multiplex electrochemical analysis. Herein, an MXene-based multicomponent sensing interface was constructed through the one-step integration of carboxylated carbon nanotubes (CNTs-COOH), chitosan (CS), and an ionic liquid (IL) with Ti 3 C 2 T x nanosheets. CNTs-COOH act as conductive nano-spacers that alleviate MXene restacking and improve electronic connectivity, while CS provides coordination-active amino and hydroxyl groups for metal-ion enrichment and contributes to film stability. The incorporation of IL improves component dispersion and ionic transport and partially mitigates the interfacial transport limitation associated with the CS-containing layer. Structural and electrochemical characterization results collectively support complementary roles of the four components in regulating interfacial accessibility, analyte accumulation, and charge-transfer behavior. Under the optimized conditions, the resulting electrode enabled the simultaneous determination of Cd 2+ , Pb 2+ , Cu 2+ , and Hg 2+ by differential pulse anodic stripping voltammetry over linear ranges of 0.5–22.5, 0.5–60, 0.5–87, and 0.5–62 μM, respectively. The corresponding detection limits were 0.1539, 0.0746, 0.2279, and 0.0931 μM. The sensor also exhibited satisfactory selectivity, reproducibility, and long-term stability, retaining approximately 92–95% of its initial response after 30 days. Recoveries of 92.2–96.0% were obtained in spiked tap-water and river-water samples, and the measured concentrations were consistent with those obtained by ICP-MS. These results demonstrate a functionally coordinated interface-engineering strategy for the simultaneous electrochemical determination of multiple heavy metal ions. Download: Download high-res image (139KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124477
·
IF 7.5
Ke Yin,Juntai Tian,Ziwei Wang,Bichun Huang
Morphology engineering is an effective strategy to regulate the catalytic performance of transition metal oxides for chlorinated volatile organic compound (CVOCs) elimination, yet the morphology-dependent response to surface modification and its intrinsic mechanism remain insufficiently understood. Herein, cubic Co 3 O 4 -c and plate-like Co 3 O 4 -p with distinct surface defect densities were selected as model catalysts to systematically reveal the morphology-dependent effect on chlorobenzene (CB) oxidation, with surface phosphorylation employed as a regulated means to probe the intrinsic morphology-dependent regulation mechanism. Surface phosphorylation exhibits a significant morphology-dependent feature. It retains the intrinsic spinel structure of Co 3 O 4 and triggers surface electronic redistribution via constructed Co–O–P bonds. High-defect Co 3 O 4 -p presents favorable responsiveness to phosphorylation, which synchronously boosts acid sites, surface Co 3 + proportion and adsorbed active oxygen content. By contrast, phosphate species partially cover surface active sites of low-defect Co 3 O 4 -c, leading to activity decline. The optimized HP-Co 3 O 4 -p delivers a T 90 value of 330 ℃ toward CB combustion, 23 ℃ lower than pristine Co 3 O 4 -p, and retains 84% conversion after 10 h reaction with mitigated attenuation. Mechanism analysis demonstrates that the morphology-dependent effect originates from the difference in surface defect density. On high-defect Co 3 O 4 -p, P–OH groups supply protons to facilitate C–Cl bond activation and HCl desorption, and phosphate moieties alleviate chlorine enrichment and restrain polychlorinated byproducts. This work reveals the morphology-dependent phosphorylation mechanism of Co 3 O 4 and guides the rational design of efficient CVOCs catalysts.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Jinlan Yang,Habib Khan,Chushi Chen,Meng Wang,Lina Xiu,Li Yang
Paper-based analytical devices (PADs) have revolutionized environmental monitoring, food safety and disease diagnosis due to their inherent portability, simplicity, and cost-efficiency. Among these, distance-based PADs enable instrument-free quantitative detection by translating target concentration into measurable flow distance. Stimuli-responsive hydrogels, whose viscosity can be altered by target-triggered sol-gel transitions, are widely used in distance-based PADs, among which click-chemistry hydrogels stand out by virtue of their efficient and stable covalent bonding. Such stable covalent networks provide click hydrogels with strong anti-swelling and anti-degradation properties, crucial for reliable performance in on-site environments. In this study, we present a novel distance-based PAD approach that integrates target-induced click hydrogels, establishing a highly stable, versatile, and sensitive platform for multi-analyte detection. This innovative PAD makes use of copper-catalyzed azide-alkyne cycloaddition click chemistry to craft hydrogels from polyethylene glycol derivatives. Notably, specific target analytes like Cu²⁺, ascorbic acid, alkaline phosphatase, and pyrophosphate finely modulate the hydrogel crosslinking degree, causing noticeable changes in its viscosity. These viscosity variations are then translated into measurable flow distances on pH test papers, providing a direct and quantitative visual readout without the need for complex instrumentation or extensive operation. The entire detection process, from sample loading to result readout, can be accomplished within approximately 5 min, demonstrating the rapid analysis capability of this approach. This work offers stable, rapid, sensitive, and cost-effective multi-target detection, significantly advancing instrument-free PAD technology and expanding the scope of versatile analyte detection.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Guoyong Liu,Yanrui Xie,Yanzhen Cao,Yingying Jing
Under the catalysis of MnO 2 , TBHQ can react with Cys to generate fluorescent CDs. • A fluorescence turn-on sensor for detection of TBHQ is proposed based on in-situ formation of fluorescent CDs. • This sensor is capable of quantitatively measuring the concentration of TBHQ in edible oils. Excessive intake of the food additive tert -butylhydroquinone (TBHQ) causes potential hazards to the human body. Designing an easy-to-fabricate and efficient TBHQ sensor is of great research significance. We found that in the presence of MnO 2 , TBHQ can react with cysteine (Cys) to generate fluorescent carbon dots (CDs). Inspired by this simple fluorogenic reaction, a turn-on sensor for TBHQ detection is proposed based on in-situ formation of fluorescent CDs. The sensor offers a linear range of 1–200 μM and a detection limit as low as 0.06 μM. Due to its simple reaction precursors and unambiguous reaction mechanism, this sensor demonstrates good practicability for TBHQ measurement in edible oils. This fluorescence turn-on in-situ sensor, which does not require pre-synthesized materials, offers considerable potential for on-site detection of TBHQ. Download: Download high-res image (122KB) Download: Download full-size image
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DENTAL MATERIALS
·
2026
·
IF 6.3
Zhenzhen Zhang,Chang Shu,Shengli Hu,Jingheng Wu,Yadong Chen,Yanji Lu,Qi Zhong,Mengqi Pan,Jiajia Xu,Zhuo Chen,Xiaodong Li,Qiaojie Luo
CaCl₂/AgF treatment achieves rapid ex vivo dentinal tubule occlusion within 40 s. • Co-precipitation generates deep intratubular deposits (∼96 μm). • Occlusion remains stable after brushing, ultrasonication, and acidic challenges. • CaCl₂/AgF treatment reduces fluid transport under simulated pulpal pressure. • The Ca–Ag strategy shows promise for durable dentinal tubule occlusion. Objectives Dentin hypersensitivity arises from fluid movement within patent dentinal tubules. Existing chemically mediated occlusion strategies require days to weeks, limiting clinical applicability. This study developed a rapid CaCl₂/AgF regimen for durable dentinal tubule occlusion. Methods Human third molars were acid-etched with 37% phosphoric acid for 15 s to establish an exposed dentin model. Specimens were sequentially treated with 0.05 M CaCl₂ and 0.1 M AgF for 20 s each (Ca–Ag group). Gluma, Duraphat, and Actimins served as comparators. Tubule occlusion, surface hardness, resistance to abrasive, ultrasonic, and acidic challenges, and fluid transport through pulp were evaluated. Results The Ca–Ag regimen achieved near-complete tubule occlusion (97.5 ± 1.4%) with deep intratubular deposits (96.0 ± 10.5 μm), significantly outperforming commercial desensitizers ( p < 0.001). Tubule sealing remained stable after abrasive (92.2 ± 4.3%), ultrasonic (93.8 ± 2.8%), and acidic (95.2 ± 1.9%) challenges. Surface hardness increased from 34.5 ± 2.8 HV to 46.3 ± 3.7 HV. Under 15 cm H 2 O pulp pressure, Ca–Ag markedly reduced fluid penetration, decreasing the mean fluorescence intensity from 173.9 ± 14.8–37.4 ± 6.5 AU ( p < 0.001), whereas minimal reductions were observed in the other groups. Conclusions CaCl₂/AgF treatment enables rapid, deep, and durable dentinal tubule occlusion with strong resistance to mechanical and chemical challenges. Significance The Ca–Ag regimen provides a rapid and durable ex vivo dentinal tubule occluding strategy. The clinical desensitizing efficacy and long-term performance require validation through well-controlled in situ and clinical trials.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Xuxuan Lu,Xinyu Zhou,Huiyan Wang,Ying Zhang,Dachang Dong,Lijie Xu
Nitrate is always present as the concomitant component during the advanced treatment of refractory organic emerging contaminants. The simultaneous achievement of effective denitrification is an ideal goal for environmentally friendly treatment, especially for those nitrogen-containing compounds. Herein, the performance and mechanisms for simultaneous removal of CBZ and nitrate by UV 254nm /S(IV) process were investigated. Results demonstrated that CBZ and NO 3 – - N could be efficiently removed together, and denitrification was mainly contributed by e aq - , while CBZ degradation was driven by e aq - (55.4%) and •OH (30.4%) collectively. Moreover, the presence of nitrate exerted more significant influences on CBZ degradation than the competition nitrate faced on its own. The removal of CBZ and nitrate both increased with the rise in solution pH and the decrease in their respective initial concentrations. However, the denitrification was accelerated by increasing sulfite concentration while CBZ degradation was obtained at an optimum sulfite concentration. Although nitrate could quench the hydrated electrons to impede CBZ degradation, the •OH radicals produced by nitrate photolysis could compensate partially for the loss. The final product of nitrate was almost completely the nitrogen gas, while both the reduction pathway and oxidation pathway of CBZ degradation were proposed based on DFT calculation and UPLC/MS analysis. The detoxification advantages of CBZ degradation were also revealed from the UV/sulfite process, and the intermediates obtained from reduction reactions generally showed lower toxicity than those from oxidation reactions. This study may provide insights into developing efficient and environmentally friendly advanced methods for the treatment of emerging contaminants.
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