DYES AND PIGMENTS
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2026
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IF 3.9
Qun-Fang Wang,Yun Li,Shi-Hang Yang,Zi-Qi Xiao,Zong Li,Bei-Ning Xiao
Green synthesis of PLA-CQDs as PLA-based N-doped carbon quantum dots is developed. • PLA-CQDs can exhibit quick fluorescence quenching for Fe 3+ and three NAC explosives. • PLA-CQDs probe can have lower LODs, e.g., 57.9 nM (for PA, a typical NAC explosives). • Mechanistic studies show that the quenching reason of Fe 3+ and three NACs is different. • Detection in real water samples and visual sensing with test strips can be achieved. In this study, biobased polymer material poly(lactic acid) (PLA) was used as a green carbon source and ethylenediamine as a nitrogen source to successfully prepare nitrogen-doped carbon quantum dots PLA-CQDs with excellent performance via a one-step hydrothermal method. The morphology, structure, and optical properties of the carbon quantum dots were characterized by using transmission electron microscopy, X-ray photoelectron spectroscopy, FT-IR, and fluorescence spectroscopy. The results show that the PLA-CQDs exhibit a uniform particle size distribution with an average diameter of 4.81 ± 0.89 nm, being rich in amino, hydroxyl, and other functional groups on their surface. Under 365 nm UV lamp irradiation, they can emit bright blue fluorescence with a fluorescence quantum yield of 11.09%. Experimental results demonstrate that the carbon quantum dots have a highly selective fluorescence quenching response to Fe 3+ within 10 s, while also showing excellent recognition ability towards three nitro aromatic compounds (NACs), namely picric acid, p -nitrophenol, and 2,4-dinitrophenol. However, when two types of target analytes coexist, the fluorescence signal overlap occurs, thus the probe is currently only suitable for the detection of a single target analyte. The lower detection limits can reach 3.92 × 10 −7 M (for Fe 3+ ), 5.79 × 10 −8 M (for picric acid), 5.56 × 10 −7 M (for p -nitrophenol), and 1.79 × 10 −7 M (for 2,4-dinitrophenol), respectively. The probe has been applied to the detection of target analytes in real water samples, with spiked recoveries ranging from 94.9% to 104.9% and relative standard deviations below 2.5%, indicating good accuracy and reliability. This study not only achieves high-value utilization of biomass resources by using PLA as a carbon source to prepare multifunctional fluorescent probes, but also provides a new technical approach for the rapid detection of environmental pollutants such as heavy metal ions and NACs in water. Download: Download high-res image (346KB) Download: Download full-size image
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DESALINATION
·
2026
·
IF 9.9
Jiaxin Li,Mengxia Tang,Haopeng Wang,Minrui Huang,Xuenan Feng,Yao Wang,Junxia Yin,Peiyun Wei,Yanfeng Wang,Guandao Gao
Ultrasound-driven polytetrafluoroethylene contact-electro-catalysis reduces Cr(VI) to Cr(III). • PTFE contact-electro-catalysis enables generation of e − , •O 2 − , •OH and H 2 O 2 . • The PTFE contact-electro-catalytic system exhibits strong tolerance toward coexisting ions. • Contact-electro-catalysis decreases the biological toxicity of chromium. Efficient conversion of highly toxic hexavalent chromium (Cr(VI)) into low-toxicity trivalent chromium (Cr(III)) is of critical importance for mitigating environmental risks associated with chromium-containing wastewater. Here, we report an ultrasound-driven contact-electro-catalysis (CEC) process using commercial polytetrafluoroethylene (PTFE) as an efficient catalyst for Cr(VI) reduction. The PTFE CEC system achieved >99% Cr(VI) removal within 30 min under ambient conditions, and bioassays with Microcystis aeruginosa and wheat seedlings confirmed a marked decrease in ecotoxicity. Mechanistic studies revealed that PTFE continuously generated energetic electrons, superoxide radicals, and hydrogen peroxide during ultrasonication, which synergistically mediated the selective conversion of Cr(VI) to Cr(III). The system exhibited high tolerance to coexisting ions and maintained >90% removal efficiency in real water samples and > 95% activity after use in 27 cycles. Unlike conventional approaches, this strategy does not require sacrificial agents, engineered catalysts, or a controlled atmosphere. These findings demonstrate ultrasound-driven PTFE CEC is a green and efficient solution for treatment of Cr(VI)-contaminated wastewater. Download: Download high-res image (87KB) Download: Download full-size image
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JOURNAL OF FLUORESCENCE
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2026
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IF 3.4
Huang Zewei,Wang Yingjie,Ye Meiying,Cheng Heyong
Real-time, online and accurate detection of ferric/ferrous ions is quite important for environmental protection and healthcare, which is preferred by portable fluorescent sensors (in solid state) compared to previous sensors (dominant in liquid or turbid suspensions) associated with susceptibility to oxidation and precipitation. Considering the scarcity of the solid-state fluorescent sensors, a nitrogen-doped carbon quantum dots (NCQDs) encapsulated ZIF-8 (NCQD@ZIF-8) photonic crystal (PC) sensor for Fe 3+ and ascorbic acid detection in solid state was constructed by rapid evaporation self-assembly technique. The fluorescence intensity of NCQD was enhanced with slow light effect of ZIF-8 PC. Fe³⁺ was selectively detected based on its ability to quench the fluorescence of QDs@ZIF-8 PC through a combination of the internal filter effect and possible Fe 3+ −QDs complexation. Detection of ascorbic acid (AA) was based on the fact that AA can recover the fluorescence intensity of the NCQD@ZIF-8 PC quenched by Fe 3+ due to AA reduction of Fe 3+ to Fe 2+ . Both Fe 3+ and ascorbic acid can be quickly and selectively detected by the NCQD@ZIF-8 PC sensor in the linear range of 0. 1− 10 mmol L − 1 (R 2 = 0.996) with detection limits of 0.06 mmol·L − 1 and 100 µL sample consumption. Iron speciation analysis (Fe 3+ and Fe 2+ ) in simulated water samples was realized with good precision and accuracy. The NCQD@ZIF-8 PC sensor provided a rapid and portable way for determination of Fe 2+ /Fe 3+ in environmental samples and new possibilities for device fabrication. Graphical
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CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Jiaqi Chen,Weiye Chen,Xinyi Zhao,Yun Xue,Jianzhang Gao,Yongde Yan
The effective treatment of uranium-containing wastewater is of critical importance for environmental radiological protection and the sustainable development of nuclear energy. Nevertheless, achieving directed uranium separation from highly complex systems remains a significant technological challenge. To address this issue, we developed an innovative carbonate-assisted separation strategy specifically for targeted uranium extraction from ultra-complex matrices (13 metal cations and 4 anions). Following the initial separation, uranium retention rate (>50%) in the aqueous phase substantially exceeded that of competing impurity ions, thereby establishing a favorable basis for subsequent purification stages. The separation factors for Cs and Sr were relatively low (3.7 and 7.6), rendering these two elements the hardest impurities to separate from uranium. The separation factors for the remaining impurities range from tens to tens of thousands, indicating excellent separation performance. Further refinement was successfully accomplished through electrochemical processing, which significantly enhanced uranium purity. And the recovery rate could reach over 99%. Comparative experimental studies demonstrated that increased cation concentrations and operating temperatures markedly enhanced the electrochemical extraction efficiency of uranium. To explore the relative importance of experimental parameters, machine learning analysis employing XGBoost gradient boosting combined with SHAP interpretability methods was conducted, revealing that reaction time and electrolyte concentration exerted the greatest influence on the model’s predictions. Characterization results further revealed that carbonate addition simplified uranium reaction pathways to a single dominant process. Collectively, this study establishes a novel conceptual framework and practical methodology for selective uranium separation in uranium-containing wastewater treatment.
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LUMINESCENCE
·
2026
·Vol. 41
·期 7
·e70559
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IF 2.8
Huiping Zhou,Mingyi Kang,Zhifeng Hao,Xue Zhang,Peng Liu,Guangyou Zhang,Xueying Wang,Na Jiang
Two simple Schiff bases PHMP( (E)-2- ((2-(9H-purin-6-yl)hydrazono)methyl)phenol) and PHMEP( (E)-2- ((2-(9H-purin-6-yl)hydrazono)methyl)-6-ethoxyphenol) were designed and synthesized based on 6-hydrazine-purine with salicylaldehyde and 3-ethoxy-salicylaldehyde, respectively. Among them, both PHMP and PHMEP exhibit significant “turn-on” response characteristics when coordinating with Zn 2+ ions in an EtOH/H 2 O buffer solution, demonstrating remarkable selectivity and sensitivity, accompanied by a noticeable color change. Initially, neither probe exhibited significant fluorescence. However, upon forming complexes with Zn 2+ , PHMP and PHMEP exhibit bright blue and green fluorescence responses, respectively. In contrast, the ethoxy modification in PHMEP alters its steric hindrance and electron cloud density, resulting in fluorescence signals with both superior selectivity and sensitivity compared with PHMP . Additionally, the newly formed complex PHMEP -Zn 2+ can serve as a selective “turn-off” fluorescence probe for Cu 2+ ions. Experimental data indicate that the detection limits of PHMP and PHMEP for Zn 2+ ions are 1.08 × 10 −8 M and 8.85 × 10 −9 M, respectively; the detection limit of PHMEP -Zn 2+ for Cu 2+ ions is 1.79 × 10 −8 M. Job's plot analysis, ESI-MS titration, and theoretical calculations confirmed that the stoichiometric ratio of the probes to the target ions is 1:1. Additionally, PHMP and PHMEP demonstrate broad potential applications in quantitative detection, being suitable for both tap water and convenient test strips.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Lingfeng Liu,Junhui Zhou,Ziqi Cao,Miaolin Chen,Jincheng Cai,Qingjiang Feng,Yuhan Chen,Jianbo Jia,Mengchen Zhang
Membrane-based mono/divalent ions sieving is pivotal for enhancing sustainable development across various fields related to resource extraction, environmental preservation and energy conversion. Two-dimensional (2D) laminar membranes are emerging as promising candidates for high-precision ion separation, where selective ion transport occurs either along the plane (interlayer) or through the plane (interedge). Herein, we propose a reduction-assisted cation-anchored strategy for tailoring both interlayer and interedge ion channels in 2D graphene oxide (GO) membranes. By rational immobilization of a series of semi-dehydrated cations, the GO interplanar interactions and architectures are elaborately manipulated. Characterizations and simulations unveil that alkali cations (K + , Na + , Li + ) and alkaline earth cations (Mg 2+ , Ca 2+ , Ba 2+ ) tend to anchor at interlayer and interedge regions of GO through cation-π and coordination interactions, enabling the angstrom-level size control over the GO interlayer spacings (from 4.4 to 4.6 Å) and the edge-to-edge distances (from 4.1 to 5.8 Å), respectively. By leveraging the synergy of dual-channel co-regulation, the Li + &Ca 2+ -co-anchored reduced GO (Li + &Ca 2+ -rGO) membrane exhibited an extraordinary discrimination ability towards mono/divalent ions. Our findings elucidate the semi-dehydration binding mechanisms of alkali and alkaline earth cations within GO membranes, and highlight their critical roles in angstrom-scale fine-tuning of interlayer and interedge ion channels, paving the way for the development of 2D laminar membranes for precise ion separation applications.
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FOOD HYDROCOLLOIDS
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2026
·
IF 13.8
Shuo Han,Yanan Zhao,Herui Zhang,Qiufeng Zhang,Boqun Liu,Yang Li
3D printing has emerged as a promising technology for developing nutritional foods to meet the needs of people with dysphagia. However, a single hydrogel or oleogel cannot meet the strict performance requirements for 3D printing, while bigels are ideal inks by combining the merits of both gels. In this study, soybean protein isolate (SPI)–rice bran oil (RBO) bigels were prepared at oleogel/hydrogel ratios of 30:70, 40:60, 50:50, 60:40, and 70:30. The samples were characterized by confocal laser scanning microscopy (CLSM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), rheology, texture profile analysis (TPA), low-field nuclear magnetic resonance (LF-NMR), liquid binding capacity (LBC), oxidative stability, International Dysphagia Diet Standardisation Initiative (IDDSI) tests, and manual extrusion using a 3D printing pen. Increasing oleogel content promoted phase evolution from oil-in-water (O/W) to bicontinuous and water-in-oil (W/O) structures, enhanced hydrogen-bonding-related spectral changes and crystallinity, and reduced free-water mobility. All formulations showed shear-thinning behavior and elastic-dominant networks. Among them, BG6 (60:40) showed the most balanced performance, including the highest thermal stability (Tpeak = 55.17 °C), high LBC (98.68%), relatively slow lipid oxidation, IDDSI Level 5 compliance, and visually stable F-, Z-, and cube-shaped structures under manual extrusion. These results suggest that SPI-RBO bigels, particularly BG6, have potential as plant-based edible inks for dysphagia-oriented 3D printed foods under the tested conditions.
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JOURNAL OF CONTROLLED RELEASE
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2026
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IF 12.4
Ruizhen Lv,Yong Liu,Yao Qi,Xing Huang,Jiawei Liu,Jia Liang,Yijie Shi,Liang Zhao
Internal wireless electric stimulation (ES) based on piezoelectric materials with ultrasound (US) stimulation has emerged as a promising noninvasive strategy of tissue regeneration. However, due to poor electric field generation and their inherent ability to generate reactive oxygen species (ROS), piezoelectric materials have few been explored for the treatment of ROS related ischemic stroke (IS). Based on these properties, we design an intracerebrally injectable thermosensitive hydrogel (US+BCGTs@TSG) utilizing US-activated piezoelectric heterojunction known as BCGTs composed of barium titanate (BaTiO 3 , BTO), cerium oxide (CeO 2 ), and graphene quantum dots (GQDs) for treating IS. Compared with conventional drug intravenous administration, in situ intracerebral injection of thermosensitive US+BCGTs@TSG can rapidly form a gel-like structure at body temperature, allowing for the direct delivery of therapeutic agents to the infarcted area. Following US, BCGTs target and repair mitochondria, inhibiting the occurrence of anaerobic metabolism. The combination of CeO 2 and GQDs facilitates electron transfer while also suppresses the generation of ROS from the piezoelectric materials. As a result, US+BCGTs@TSG contributes to a synergistic neuroprotective therapy and significantly reduces IS mediated neurodysfunction and depressive disorder.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2026
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IF 7.1
Mengru Wang,Biao Zhang,Wen-Sheng Zou,Jinhui Zhang,Yaqin Wang
A self-cleaning ultrafiltration membrane with electrically switchable antifouling and antibacterial functions was developed by incorporating a g‑C 3 N 4 /reduced graphene oxide (rGO) composite into a polyvinylidene fluoride (PVDF) matrix. At + 1.5 V, the optimized membrane (M3, 7.5 wt% g‑C 3 N 4 ) achieved a pure water flux of 115.97 L·m −2 ·h −1 , and a BSA flux retention 85.6 % (51.35 L·m −2 ·h −1 ) after 3 h, outperforming the control membrane (M0) with 76.57 L·m −2 ·h −1 , and 59.2 % retention (35.53 L·m −2 ·h −1 ). The M3 membrane achieved a BSA rejection of 99.70 %, a flux recovery ratio (FRR) of 93.86 %, and an antibacterial efficiency of ∼99.7 % against E. coli under dark conditions. The superior self-cleaning performance is attributed to the synergistic effects of enhanced electrostatic repulsion and electrocatalytic generation of reactive oxygen species (ROS). This work offers a practical strategy for designing smart separation membranes with on-demand antifouling and self-cleaning capabilities for advanced water purification.
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FOOD CHEMISTRY
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2026
·
IF 10.4
Xinyu Luo,Dejin Lin,Jingqi Wang,Yihao Zhang,Xinru Liu,Sineng Gao,Da Chen
High-performance and on-site detection of pesticide glyphosate (GLY) residue is particularly urgent and challenging. Herein, dual-emission nitrogen-doped carbon dots (N-CDs) synthesized from tris-hydroxymethyl-aminomethane and resorcinol are successfully developed as a ratiometric fluorescence sensor. Upon adding GLY, the fluorescence intensity of N-CDs at 425 nm is quickly quenched via aggregation-caused quenching and photoinduced electron transfer, leading to the complexation process of N-CDs with GLY. While the fluorescence intensity of N-CDs at 525 nm with little change can be served as the reference signal. This distinct ratiometric fluorescence sensor achieves the detection limit and quantification limit as low as 24 nM and 80 nM with a wide linear range of 0.024–30 μM, respectively. Moreover, a smartphone-integrated lateral flow visual sensing platform is established for GLY detection by capturing and identifying the parameters of color variations. This platform represents a potential for the quantitative monitoring of GLY residue in food and the environment.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Junyuan Shi,Zihang Yin,Dejin Lin,Dingfeng Wang,Siting Peng,Wendi Xiao,Houwen Hu,Jiong Cheng,Da Chen
The pervasive issue of pharmaceutical overuse in agriculture and veterinary practice has led to the alarming accumulation of drug residues within the global food supply chain, posing a direct and escalating threat to consumer safety. Among these contaminants, compounds such as chlorogenic acid (CGA) and tinidazole (TNZ) are of particular concern due to their potential to provoke allergic responses and cause long-term adverse health effects. There is an urgent need for the development of rapid and reliable detection techniques capable of on-site monitoring to effectively mitigate these risks and ensure food safety. Herein, our work develops an innovative ratiometric sensing strategy that utilizes the dual-excitation properties of nitrogen-doped carbon dots (N-CDs) to simultaneously detect CGA and TNZ. Remarkably, as a fluorescent nanoprobe, N-CDs are capable of detecting CGA over a concentration range of 0.036-40 μM with a limit of detection (LOD) of 36 nM, which is attributed to static quenching (SQE) and the inner filter effect (IFE). Differently, the addition of TNZ results in fluorescence quenching of N-CDs via localization of inner filter effect (L-IFE), presenting the LOD of 68 nM within the 0.068-25 μM range. Furthermore, a portable smartphone-assisted platform which incorporates the N-CDs/PVA composite film successfully enables visual detection of CGA and TNZ with satisfactory recoveries in real samples. These results suggest that the developed portable smartphone-assisted fluorescence platform enables accurate dual-target detection of CGA and TNZ while offering outstanding stability and reproducibility suitable for on-site applications. Consequently, our methodology presents a versatile and practical strategy for real-time pharmaceutical residue screening, significantly advancing food safety monitoring capabilities.
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ADVANCED MATERIALS
·
2026
·
IF 29.1
Yong Lin,Xinyuan Zhou,Cheng Yang,Junqi Sun,Ting Fang,Weijie Qiu,Weixi Huang,Jinheng Zhang,Qiangbing Lu,Chong Bai,Haorun Guo,Likang Ding,Changqing Qin,Qian Wang,Shaolei Wang,Gaohua Hu,Xinghai Ning,Yan-Qing Lu,Desheng Kong
Stretchable electronics are poised to revolutionize smart wearables and biomedical implants, yet their progress is hindered by the lack of biocompatible and easily functionalized conductors. While silver nanowire (Ag NW)-based composites show promise, their cytotoxicity and chemical instability often require complex passivation with noble metal coatings. Here, we introduce a scalable in situ synthesis that directly converts a patterned blend of Ag NWs and carbon nanotubes (CNTs) into a hierarchical core–shell architecture. The resulting material features a conductive nanocomposite core enveloped by a protective, CNT-rich shell, achieving high conductivity (5100 S/cm), stretchability (>200% strain), and carbon-like biocompatibility. Its broad electrochemical stability window permits direct electroplating of active materials required for physical and chemical sensing. We demonstrate the utility of this platform via soft electronic patches that conform to dynamic skins and organs. In a compelling in vivo application, these patches successfully recorded pathological electrograms and terminated arrhythmia via closed-loop pacing therapy on a rabbit heart. This work establishes a general strategy for creating biocompatible compliant conductors as a key enabler for stretchable devices in health monitoring, medical therapies, and human-machine interfaces.
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