Engineering
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2026
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IF 12.2
Hongjie Zhou,Xiaoqiang An,Tianshu Zhang,Mingran Li,Lingru Kong,Huachun Lan,Huijuan Liu,Jiuhui Qu
The recovery of precious metals (PMs) from industrial waste streams is constrained by the scarcity of adsorbents that reconcile scalable production, multi-metal selectivity, and cost-effectiveness. Here, we engineered S/N co-functionalized activated carbon to overcome these challenges by combining hierarchical porosity with an electron-enhanced surface of a multifunctional S/N network. The optimal S/N co-functionalized activated carbon (AC2) is synthesized via a scalable one-pot solvothermal method (92% yield, 0.532 kg·batch −1 ), immobilizing thioamide, polysulfide, imine, and amine functionalities onto a micro-mesoporous carbon matrix. This design enables ultra-trace PM uptake (1 μg·L −1 ) with exceptional residual levels (<0.001 μg·L −1 ) and remarkable adsorption capacities (1750, 940, and 270 mg·g −1 for Au, Pd, and Pt, respectively). Practical validation in e-waste and catalyst leachates (>96% recovery) and spiked surface water (92%–97% PM uptake with 10000 fold competing metal concentrations) demonstrates robust performance in real-world hydrometallurgical and ecological contexts. The adsorbent’s techno–economic viability is further underscored by acid-resistant reusability (>15 cycles), a 34 fold cost reduction at scale (370 CNY·kg −1 ), and over 90% lower life cycle environmental impacts. This work establishes a paradigm for resource-efficient urban mining, integrating scalable material design with critical metal recovery to address global resource circularity challenges.
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MINERALS ENGINEERING
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2026
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IF 5
Yunzhen Hu,Kangjing Wu,Shuai Wang,Zhanfang Cao,Xin Ma,Hong Zhong
The flotation separation of chalcopyrite and galena remains challenging due to their similar surface properties. Here, we demonstrate that H 2 O 2 pretreatment passivates Cu sites (forming Cu–O) while activating Pb sites (forming Pb–O) on mineral surfaces, which transforms sodium 2-(dithiocarboxylato)ethyl acetate (DTCA) from non-selective into a galena-selective depressant. Micro-flotation experiments indicate that with H 2 O 2 oxidation duration of 30 min, pH of 10, and DTCA dosage of 100 mg/g, galena recovery can be reduced to below 5% while maintaining chalcopyrite recovery above 90%. Following oxidation, the adsorption amount of chalcopyrite decreased from 96.54 to 7 mg/g, while that of galena increased from 101.32 to 102.45 mg/g. Multiscale characterizations (FTIR, XPS, ToF-SIMS) indicate that DTCA adsorbs onto the surfaces of chalcopyrite and galena, respectively, via chelation between S–Cu–S and S–Pb–S bonds. Density functional theory (DFT) calculations confirm that oxidation enhanced the adsorption strength of DTCA on the surface of galena, with the adsorption energy shifting from −2.571 to −2.645 eV. Conversely, adsorption strength decreased significantly after oxidation of chalcopyrite, with the adsorption energy shifting from −2.470 to −1.588 eV. Closed-circuit tests on industrial concentrates yielded copper recovery and grade reached 93.13% and 27.43%, respectively, while lead achieved 96.33% recovery and 43.21% grade, with a separation index (SI) of 2.55, surpassing that achieved by the toxic potassium dichromate(K 2 Cr 2 O 7 ) method. This study proposes a Cr (VI)-free flotation strategy for efficient Cu–Pb separation, offering a promising alternative to conventional environmentally hazardous methods.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Hui Zhou,Bingxin Zhu,Shuang Liu,Qiang Fu,Jibo Zhang,Zhigang Liu,Shihua Yu
To remove a small amount of glyceraldehyde from glycerol efficiently and conveniently, a tailored magnetic nanopartical of Fe 3 O 4 @SiO 2 -NH 2 is prepared by sol-gel and dehydration condensation methods. The structural, morphological, and magnetic properties of adsorbent have been characterized by XRD, FTIR, SEM, VSM and BET. The influence of contact time, adsorbent dosage, initial concentration and reaction temperature on the removing of glyceraldehyde have been investigated. Batch adsorption experiments indicate that the removal rate of glyceraldehyde is ∼80 %, with the initial concentration of 10 mg/L, and adsorbent dosage of 3.5 g/L at 80 ℃. Meanwhile, the adsorption process is in accordance with the pseudo-second-order adsorption kinetics and the Langmuir adsorption isotherm model. Thermodynamic data indicate that this adsorption is endothermic and non-spontaneous. Importantly, the composites can be used for glyceraldehyde removal from three glycerol products from the market, with the removal rates of 83.76 % (Reagent), 85.01 % (Quan Rui) and 82.48 % (Sinopharm), respectively. Finally, the adsorption mechanisms are explored by pH experimental evidence and XRD, FTIR analysis, which show that mainly involve hydrogen bonding, aldehyde-amine condensation reaction, and non-specific surface physical adsorption. All the results can provide new idea for improving the high value of chemical products and reducing the small amount of harmful impurities in glycerol.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Xuanyan Luo,Huijuan Wu,Yaxi Shu,Fuping Rao,Huiyong Wang,Zhenming Wang,Baozhan Zheng
Facing severe bacterial threats and the growing challenge of antibiotic resistance, the development of effective antibacterial materials remains an urgency. Herein, we present a novel strategy for fabricating carbon dots (CDs) with broad-spectrum antimicrobial activity and excellent biocompatibility. The CDs was synthesized under mild conditions using cetylpyridinium chloride (CPC) as a precursor by simply controlling the reaction time. The resulting CDs exhibits significantly enhanced antibacterial activity compared to CPC, along with lower cytotoxicity and minimal hemolysis. Notably, CD2 (obtained after 2h reaction) has a minimum inhibitory concentration (MIC) of 32 μg/mL and 16 μg/mL against gram-negative E. coli and gram-positive S. aureus, respectively. Mechanistic investigations revealed that the positive surface change, hydrophobic groups and ultra-small size of CD2 promote effective interaction with and penetration into bacterial cells, ultimately leading to its death. Moreover, CD2-coated medical gauze and fabric exhibited potent bactericidal performance, highlighting its potential for clinical applications. This work offers valuable insights for the development of high-performance antibacterial materials in biomedical fields.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Yifan Sun,Xuantong Gan,Bingrui Tong,Xiaoyue Yao,Hui Liu
Phenolic compounds, including catechol, pose significant environmental threats due to their high toxicity and low biodegradability. However, owing to the complex procedures, high cost, and low specificity of the present detection techniques, the on-site and real-time monitoring of catechol in real water remain challenging for practical use. In this work, we developed a FeS-rGO micro-nanocomposite-based biosensor for trace catechol detection in water. The material was engineered through a hydrothermal and oriented self-assembly approach that enabled in-situ growth of flower-like FeS on rGO, effectively preventing FeS agglomeration and enhancing interfacial integration. This designed structure synergistically combines the high surface area of FeS with the conductivity of rGO, promoting efficient electron transfer and catalytic activity. After laccase immobilization, the biosensor exhibits high selectivity for catechol against interfering phenols, with a sensitivity of 253 μA·mM −1 ·cm −2 and a broad linear range from 10 nM to 8.12 mM, which demonstrates potential application in the early-warning and treatment of environmental pollutant leakage.
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Analytical Methods
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2026
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IF 2.6
Tianyi Zhu,Jian Zhang,Danyi He,Yiwen Yang,Hailong Wang,Jianbo Wang,Longhua Guo,Lei Li,Jianrong Chen,Yanbo Zeng
Oxytetracycline (OTC) residues have seriously threatened human health, as they may trigger allergic responses, hepatotoxicity, and the development of bacterial resistance. Detecting OTC in samples is therefore important. This work developed a pyrene-based fluorescent molecularly imprinted polymer (Py-FMIP) to rapidly and selectively detect OTC. N-allyl-4-(pyren-1-yl) butanamide (Al-Py), a new alkenyl functional monomer, was synthesized using 1-pyrenebutyric acid as the raw material with simple synthesis process. Py-FMIP was then obtained with Al-Py as a functional monomer and OTC as a template molecule. The Al-Py and Py-FMIP absolute fluorescence quantum yields were 74.05% and 69.27%, separately, suggesting the high fluorescence performances of two materials. The fluorescence of Py-FMIP was strongly quenched by OTC through inner filter effect. The prepared Py-FMIP sensor responded to OTC within 1 min, its linear detection range was 0.5–150 μM, and its detection limit was 0.05 μM (S/N = 3). The prepared Py-FMIP sensor also exhibited notable selectivity toward OTC. The recoveries of the Py-FMIP fluorescent sensor were 96.37%–104.60% in milk and tap water, with relative standard deviations lower than 5.13%.
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PubMed
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Li Cui,Rongling Zhong,Wanqiu Peng,Zhenhai Zhang,Zhentao An,Hui Li
Current clinical management of diarrhea-predominant irritable bowel syndrome (IBS-D) faces substantial challenges due to the limited efficacy of existing therapeutic strategies. This study aimed to synthesize and characterize the hyaluronic acid-ethylenediamine-cinnamic acid conjugate (HA-EDA-CA), investigate its oral bioavailability and colonic tissue distribution, and validate its therapeutic potential along with underlying mechanisms of action in IBS-D models. Following oral administration of free CA or HA-EDA-CA, the colon concentration of CA released from the derivative was significantly higher than that of free CA alone. Both free and conjugated forms of CA likely contributed to the therapeutic effects against IBS-D. The IBS-D model was established by a combination of senna decoction administration and physical restraint stress. After HA-EDA-CA intervention, IBS-D model mice showed marked improvements in stool consistency, fecal water content, stool output, body weight, visceral hypersensitivity, and colon length. ELISA results indicated significant reduction in enteric neurotransmitter levels, including 5-hydroxytryptamine, substance P, and vasoactive intestinal peptide, after oral gavage administration of HA-EDA-CA. Additionally, intestinal permeability assessment and immunofluorescence analyse revealed that HA-EDA-CA improved intestinal barrier function. Western blot analysis indicated HA-EDA-CA inhibited 5-hydroxytryptamine signaling pathway. Furthermore, HA-EDA-CA modulated gut microbiota composition. These findings suggested the potential of HA-EDA-CA as a promising therapeutic candidate for IBS-D treatment. Key novelties: (i) First colon-targeted CA-HA conjugate: We developed and characterized the first hyaluronic acid-based conjugate specifically designed for colon-targeted delivery of cinnamic acid. (ii) Multi-mechanism rescue: The conjugate simultaneously restores gut homeostasis by modulating the 5-hydroxytryptamine signaling pathway, enhancing intestinal barrier function, and rebalancing gut microbiota. (iii) Enhanced therapeutic efficacy: HA-EDA-CA demonstrates superior colonic drug accumulation and integrated therapeutic outcomes compared to free cinnamic acid or simple drug mixtures. (iv) Open-source data availability: All relevant data and analysis scripts supporting the findings are publicly accessible to ensure reproducibility and further research.
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PubMed
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MATERIALS RESEARCH BULLETIN
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2026
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IF 5.7
Weilong Bao,Hang Lu,Fei Li,Siyuan Lu
Morphological and size control of Pt nanoparticles (PtNPs) has long been pursued to improve the catalytic performance of Pt-based electrochemical sensors during recent decades. In this study, a high‑performance hydrogen peroxide sensor was developed by electrochemically depositing PtNPs onto a polyaniline‑modified glassy carbon electrode (PANI/GCE). Subsequently, the PtNPs/PANI/GCE electrode was separately subjected to two distinct methods, namely square wave (SW) treatment and square wave voltammetry (SWV). It was found that SWV was able to alter the exposed surface of platinum nanoparticles from (111) to (200), which leads to the formation of the angular nano-edges on the original Pt nanospheres. This structural transformation effectively increased the number of active sites and enlarged the effective surface area for the catalytic redox reaction of hydrogen peroxide. Owing to such advantages, the prepared PtNPs/PANI/GCE-SWV electrode exhibits a wide linear range from 50 μM to 30 mM and an excellent sensitivity of 294.90 μA·mM −1 ·cm −2 for H 2 O 2 detection. In addition, SWV endowed the fabricated sensor with superior stability and reproducibility, thereby demonstrating promising prospects in the commercialization of stretchable and wearable biosensors.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Shibo Zhao,Xinjun Wen,Hongge Jia,Mingyu Zhang,Yanqing Qu,Chengbao Geng
The continuous increase in greenhouse gas emissions is having a significant impact on the global climate system. To address this issue, efforts worldwide are promoting the development of clean energy source, with methane-rich biogas being a primary focus. However, the dilution of biogas with CO₂ significantly reduces its calorific value. Therefore, efficient methane purification and resource utilization are urgently required. This study specifically developed a high-efficiency gas separation membrane suitable for large-scale industrial applications. By precisely separating CO₂ from biogas, it provides crucial technological support for enhancing biogas energy quality and promoting its industrialization. Specifically, using a conventional polyimide membrane (6FDA-APAF) as the template, a series of intrinsically microporous polyimide membranes (PIM-PI membranes) were innovatively synthesized by incorporating fluorene-containing microporous units—Namely, 9,9′-bis(4-aminophenyl)fluorene (FDA) or 9,9′-bis(4-amino-3-fluorophenyl)fluorene (FFDA). Subsequent thermal rearrangement (TR) treatment produced PIM-PI(TR) membranes. Both the introduction of fluorene groups and TR treatment increased the interchain spacing of the membranes, with the thermally rearranged PIM-PI(TR) membranes exhibiting larger d-spacings and broader micropore peaks. The 6FDA-FFDA (PIM-PI membrane) achieved a CO₂ permeability coefficient of 151.87 barrer, which is 9.9 times higher than that of the nonporous conventional polyimide membrane (6FDA-APAF, 15.4 barrer). The 6FDA-APAF/FDA (8,2) TR400 [PIM-PI(TR) membrane], subjected to thermal rearrangement, further increased its CO₂ permeability coefficient to 813.80 barrer, representing a 19-fold improvement over the untreated membrane. Simultaneously, this membrane exhibited a CO₂/CH₄ permeability selectivity factor as high as 39.03, surpassing the 2019 Robeson upper bound. Furthermore, both macro- and micro-characterizations reveal structurally uniform and intact membranes. With superior fabrication quality that lays a solid foundation for industrial applications. These results highlight the promising potential of TR-treated PIM-PI (TR) membranes containing fluorene-based pore-forming units for gas separation. This study also offers essential technical support for the industrial application of polyimide membranes in biogas purification
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
He Zhao,Chu Xu,Caobin Zhou,Ling Zhang,Chunzhong Li
Existing triboelectric nanogenerators (TENGs) for wearable sweat sensors are plagued by low power density, which restricts their practical application. This study focuses on boosting TENGs output power via a fluorinated bi-layer electronic textile (e-textile) fabricated by electrospinning rotary collection, enabling self-powered dual functionality: real-time electrochemical sweat sensing and human motion detection. The key design includes a PCLU-HFDD negative triboelectric layer (molecularly incorporated with hexadecafluorodecanediol to enhance electron affinity) and a poly(lactic- co -glycolic acid) (PLGA) positive layer. Rotary collection creates vein-like nanostructures on PCLU-HFDD yarns (6.2 μm roughness, 114.8° water contact angle), increasing contact area. The PCLU-HFDD TENG achieves a high power density of 0.66 W m −2 , an open-circuit voltage (Voc) of 117.08 V, and excellent stability over 35,000 contact-separation cycles. Critically, integrated with both sweat-sensing and motion-detection capabilities, the e-textile enables 180-min continuous glucose monitoring (under sedentary conditions) and recognition of human motions. This work confirms that the power enhancement not only overcomes the bottleneck of TENGs for wearable sensors but also facilitates dual-modal health monitoring, advancing the development of practical wearable bioelectronics.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Di Chen,Yixin Ma,Xirui Pei,Wenxuan Li,Chenqi Niu,Haobo Zheng
Background Sulfonamides are extensively used antimicrobials, but residues in food raise health risks such as allergies, antimicrobial resistance, and carcinogenicity. Strict residue limits require sensitive and efficient monitoring methods. While LC-FLD is selective and practical, conventional workflows rely on multi-step extraction and derivatization, which are time-consuming. A streamlined strategy integrating extraction and derivatization into a single operation is needed for practical residue analysis in complex food matrices. Results A novel multi-functional effervescent tablet was developed to unify effervescence, derivatization, and extraction in one step. The tablet incorporates effervescent precursors (Na 2 CO 3 /NaH 2 PO 4 ), fluorescamine (a derivatization reagent), Fe 3 O 4 nanoparticles, and hydroxylated multi-walled carbon nanotubes (an adsorbent). Upon immersion, CO 2 bubbles promote rapid dispersion of reagents and in-situ assembly of a magnetic composite adsorbent, enabling simultaneous derivatization and efficient extraction of sulfonamides. The core tablet-mediated procedure requires only 4 min, with desorption achieved in 0.5 min using acetone. Validation demonstrated excellent linearity (R 2 > 0.998), low detection limits (0.130–0.285 ng/g), and recoveries of 82.6–107.0% with RSDs <10%. Application to spiked honey confirmed accuracy, with relative errors ranging from −8.9% to +9.2%. Comparative studies showed performance equivalent to conventional multi-step protocols, while reducing handling steps and solvent use during the extraction phase. Significance This integrated effervescence/derivatization/extraction strategy streamlines sulfonamide residue analysis into a rapid, cost-effective, and easily automatable workflow. While sample pretreatment is still required for complex matrices, the tablet-based step significantly reduces manual handling and solvent consumption during the extraction and derivatization process. Its compatibility with LC-FLD provides a practical and cost-effective alternative to LC-MS, supporting reliable food safety surveillance within regulatory standards.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Zhixiang Gui,Guodong Li,Dexin Jin,Yinglin Wang,Changhua Wang,Song Yang,Hao Li,Xintong Zhang,Yichun Liu
SnO 2 is considered an ideal electron transport layer (ETL) material for solar cells due to its excellent stability, high transparency, and high electron mobility, however, its performance in near-infrared quantum dots photovoltaics has remained unsatisfactory. This underperformance is mainly linked to generally-used chemical bath deposition (CBD) method of SnO 2 ETLs which is prone to incomplete oxidation of Sn 2+ precursor. The resulting Sn 2+ residues and oxygen vacancy (Ov) induce severe interfacial traps limiting further efficiency gains. In this study, we utilized dielectric barrier discharge technology to generate high-activity oxygen plasma for gas-phase post-treating the CBD-SnO 2 surface. This oxygen plasma reduced the amount of Sn 2+ and Ov by ~20%, which suppressed trap-assisted recombination and collectively reduced interfacial energy band alignment offset. Compared with untreated devices (efficiency: 11.32%), PbS QDSCs with optimized SnO 2 ETL increased carrier lifetime by nearly twofold and enhanced interfacial carrier collection efficiency by 10.7%, significantly raising efficiency to 13.28%. This distinctive gas-phase post-treatment method, which introduces no additional chemicals and leaves no residues, offers a new technical avenue for developing high-performance ETL.
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