WATER RESEARCH
·
2026
·
IF 12.8
Chao Zhu,Hao Liu,Kuan Sun,Jingyu Hu,Jiefei Mao,Qile Fang,Junliang Wang,Shuang Song,Yi Shen
Dissolved organic matter (DOM), ubiquitous in natural and treated waters, strongly modulates photocatalytic processes by regulating interfacial electron and energy transfer. However, the component-specific effects of different DOM types, particularly microplastic-derived DOM (MP-DOM), on photocatalyst-pollutant interfacial photochemistry remain poorly understood. In this study, we developed a nitrogen-vacancy engineered covalent triazine framework (N V -CTF-0.03) as a visible-light-driven photocatalyst, which exhibited enhanced adsorption and strong resilience to interference from coexisting DOM. The photocatalytic degradation of bisphenol A (BPA) and naphthalene (NAP) was systematically assessed in the presence of humic acid (HA) and MP-DOM (PE-, PS-, and PET-DOM), and •O 2 − was identified as the dominant reactive oxygen species (ROS). Competitive kinetic analysis revealed strong DOM-dependent modulation. HA suppressed ROS generation, likely via competitive light absorption or quenching, whereas PET-DOM markedly promoted ROS production through π-π interactions and defect-site coordination, facilitating directional electron transfer. Mechanistic investigations integrating 3D excitation-emission matrix fluorescence combined with fluorescence regional integration (3D EEM-FRI), electron transfer capacity measurements, and density functional theory (DFT) calculations indicate that PET-DOM, enriched in oxygenated functional groups and fulvic acid-like moieties, enhances N V -CTF-0.03 photocatalysis via dual pathways, mediating energy transfer to promote O 2 reduction to •O 2 − and facilitating interfacial electron-hole separation through its distinctive electron donor-acceptor properties. These findings establish PET-DOM as a component-specific photochemical mediator and provide mechanistic guidance for designing DOM-resilient, high-performance photocatalysts in complex aquatic systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMASS & BIOENERGY
·
2026
·
IF 7
Die Gao,Zhengyu Guo,Hui Ma,Huimin Cao,Leiyu Liu,Jingliang Xu,Shen Zhang
Xylose, a primary sugar component of lignocellulosic biomass, is isomers or epimers of many high-value or rare added pentose. Traditional utilization of xylose predominantly involves dehydration to furfural or hydrogenation to xylitol. In this work, we prepared a carbon-supported molybdenum disulfide catalyst (MoS 2 @C) via a hydrothermal pretreatment, which facilities multi-step isomerization of xylose toward three high-value monosaccharides: lyxose, arabinose, and ribose. NH 3 -TPD and EPR characterizations proved that abundant MoS 2 and S vacancy sites are generated on carbon surface. S 2− species function as Lewis basic sites to stabilize key intermediates and facilitates hydrogen transfer. These dual-functional sites jointly promote a sequential isomerization and epimerization of xylose pathways. Multi-isomerization process of xylose was occurred by MoS 2 @C at 120°C. The isomers and epimers including lyxose (20.06%), arabinose (15.87%), and ribose (10.84%) were obtained in water. A multi-step reaction sequence includes sequential 1,2-hydrogen migration and carbon skeleton rearrangement, leading to synthesis of arabinose and ribose. Furthermore, a mechanistic hypothesis for multi-isomerization process of xylose by MoS 2 @Carbon catalyst was proposed, sulfur species promote hydrogen transfer and carbon rearrangement through nucleophilic attack and vacancy-assisted mechanisms. This study provides an effective catalyst design strategy and mechanistic basis for the conversion of xylose into high-value products using molybdenum disulfide.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2026
·
IF 6.7
Yishou Liu,Yi Zhang,Qiang Hu,Tania Farias,Xiaosheng Peng,Yingquan Chen,Haiping Yang,Hanping Chen
Catalytic fast pyrolysis of nitrogen-rich biomass offers a promising route for producing high-value N-containing chemicals while reducing NOₓ emissions. This study systematically examines the effects of pyrolysis temperature, residence time, zeolite Si/Al ratio, and external nitrogen sources on the conversion behavior of soybean protein. The results show that appropriately elevated catalytic temperatures and reduced space velocities significantly promote the formation of N-heterocycles such as indole and quinoline. Mildly acidic HZSM-5 with abundant micropores, as well as added inorganic nitrogen sources, further enhance product selectivity. Spectroscopic analysis reveals a sequential evolution of nitrogen species on the catalyst surface, in which protein-derived quaternary nitrogen gradually transforms into pyridinic N and subsequently into N-heterocyclic intermediates, accompanied by the release of CO₂ and NH₃. These findings elucidate the mechanistic pathway of nitrogen migration during catalytic pyrolysis and provide guidance for the targeted synthesis of high-value N-containing chemicals.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Han Shen,Xiaorong Meng,An Zhou,Zhifan Zhang,Pan Feng,Haigang Qin
This study employs a synergistic strategy combining La 3+ -doped modified VO 2 (B) (L x VO) with mesoporous hollow carbon spheres (MHCS) to prepare a high-capacity, highly stable MHCS-supported La-doped VO 2 (B) cathode material (HLVO). Optimizes the La 3+ doping ratio of L x VO and the MHCS content in HLVO, and the lattice expansion behavior of VO 2 (B) caused by La 3+ doping and the composite of carbon materials is clarified, which effectively contributes to the improvement of Zn 2+ diffusion kinetics rate and electrochemical performance of HLVO. The dynamic mechanism of LVO and HLVO is explained by density functional theory. The results show that the (110) interplanar spacing of 5 % La-doped L 0.05 VO increases to 0.355 nm. In the optimized H2L 0.05 VO, L 0.05 VO loose nanorods and MHCS are evenly distributed. The diffusion kinetic rate constant of Zn 2+ in HLVO is two orders of magnitude higher than that of VO 2 (B). At 1 A g −1 , the specific capacity of H2L 0.05 VO cathode remains at 403.5 mAh g −1 after 200 cycles, and the capacity retention rate is as high as 81.6 % after 10 A g −1 10000 cycles. The synergistic strategy of rare earth doping and carbon material composite provides a new idea for the development of high-performance aqueous zinc ion batteries (AZIBs) cathode materials.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Zi Cheng,Honghong Lyu,Xin Wang,Jingchun Tang,Pengfei Wang
Chlorinated by-products (Cl-DBPs) generated during drinking water disinfection are characterized by high toxicity, low concentration (ppb level), and difficult to be removed under environmental disturbances. However, traditional adsorption or in situ degradation technologies remain ineffective in achieving efficient removal. This study developed a novel treatment material (Fe-Ir/ZnO x @BC-MIP) that can both precisely identify and efficiently degrade chlorinated phenolic disinfection by-products (CPs-DBPs). By synergistically combining molecular imprinting technology (MIT) and asymmetric bimetallic electronic structures, this treatment achieves dual removal functionality for CPs-DBPs. Nearly all trace amounts of CPs-DBPs in drinking water have achieved complete mineralization. The molecularly imprinted cavity constructed by this material using the 2’4’6-trichlorophenol (TCP) template achieves specific recognition of CPs-DBPs through C-OH hydrogen bonds (-0.80 eV) and π-π interactions (-0.85 eV), with the targeted adsorption efficiency of the imprinted material being approximately 1.5 times higher than that of non-imprinted materials. Additionally, the anchored Fe-O-Ir bimetallic sites within ZnO x nanoislands form electron-deficient and electron-rich active centers, inhibiting the complexation rate of charge carriers and stimulating the generation of free radicals (•O 2 - and •OH) to accelerate the degradation of captured substances. Furthermore, the catalytic reactor maintained a 92 % TCP removal efficiency after continuous operation for 2220 min in a flow-through column experimental setup, demonstrating excellent stability and durability. This study provides a new method for the targeted removal and detoxification of trace CPs-DBPs in complex water bodies.
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Ye He,Wu Wang,Xu-Dong You,Yao Chen,Xiao-Zhi Wang,Tong Wang,Hai-Long Wu,Ru-Qin Yu
Accurate discrimination of dark tea vintages is crucial for quality assurance and market value assessment. In this study, a multiple carbon quantum dots-enhanced excitation-emission matrix (MCQDs-EEM) fluorescence strategy was developed for the rapid identification of Anhua dark tea from different production years. Three functional carbon quantum dots with complementary responses to pH, tea polyphenols, and amino acids were combined into an integrated fluorescent chemical sensor, generating enhanced and information-rich fluorescence fingerprints upon interaction with tea infusions. The MCQDs-EEM dataset was decomposed using the Alternating Trilinear Decomposition (ATLD) algorithm, which revealed four chemically significant components that showed differences in Anhua dark tea from thirteen different years. Based on the MCQDs-EEM data, partial least squares discriminant analysis (PLS-DA) and k -nearest neighbors ( k- NN) models were constructed. The PLS-DA model achieved 100% classification accuracy for both the training and test sets, while the k -NN model attained accuracies of 96.59% and 100%, respectively. These results demonstrate clear superiority over the traditional fluorescence strategy based on carbon quantum dots (CQDs-FL), which relies on the splicing of three distinct emission spectra. The MCQDs-EEM strategy not only simplifies the implementation process but also demonstrates higher accuracy, which can be regarded as an effective tool for tea vintage authentication and quality control.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ULTRASONICS SONOCHEMISTRY
·
2026
·
IF 10.2
Huixin You,Haonan Shen,Hejie Han,Yongjing Liu,Hua Li
In this study, eighteen LCST-type temperature-responsive deep eutectic solvents (TRDESs) were developed for the ultrasound-assisted extraction of alkaloids from white pepper, using piperine (PIP) as the indicator. After optimization, the best conditions were identified as lidocaine/valeric acid (1:1) as the solvent, a solid‑to‑liquid ratio of 1:40 mg/mL, 75°C, and 30 min of ultrasound, achieving a PIP yield of 33.7502 mg/g. By utilizing the temperature‑responsive behavior of TRDES, PIP was separated solely by adjusting temperature and water content, without additional reagents, resulting in a crude extract containing 122.3 μg/mg of PIP. Subsequent analysis confirmed that the TRDES‑based ultrasound‑assisted extraction did not affect the antioxidant or anti‑diabetic (α‑glucosidase and α‑amylase inhibitory) activities of the extract. The TRDES system also showed good reusability, retaining over 85% of its initial extraction efficiency after five cycles. Density functional theory calculations revealed that ultrasound‑assisted extraction proceeds via hydrogen bonding between lidocaine/valeric acid and the five‑membered ring of PIP. With a high GAPI score of 82, this method offers a clearly greener and more sustainable alternative to conventional extraction techniques. This work integrates the novel green solvent TRDES with ultrasound‑assisted extraction, laying a key foundation for developing environmentally friendly processes in natural product preparation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2026
·
IF 4.5
Yan Jin,Hui Zhang,Tengfei Li,Shaojie Lei,Meier Jiaerheng,Dezhang Ren,Zhibao Huo
Biodiesel has emerged as a promising alternative to conventional diesel due to its renewability and environmental friendliness. In this study, a MIL-101(Cr) featuring synergistic acid sites was developed through a combined defect engineering and post-sulfonation strategy, enabling efficient esterification of oleic acid under mild conditions. Defects were introduced in the MIL-101(Cr) through a mixed-ligand approach. The existence of abundant oxygen vacancies in the defect-engineered MIL-101(Cr) was confirmed by electron paramagnetic resonance (EPR), which could provide adequate grafting sites for the subsequent sulfonation. The sulfonic acid-functionalized MIL-101(Cr) catalyst (MRBSX) was then synthesized by post-sulfonation with chlorosulfonic acid as the sulfonation agent. The chemical structure and sulfonic acid density of MRBSX were systematically investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), brunauer-emmett-teller (BET), and Fourier-transform infrared spectra (FT-IR), and other characterization techniques. Acid-base titration combined with elemental analysis (EA) demonstrated the successful loading of sulfonic acid groups in MRBSX, highlighting the promotional role of oxygen vacancies in enhancing acid site density and catalytic efficiency. Under optimized reaction conditions (100 °C, 6 wt%, 3 h, and M/O = 8:1), the MRBSX with 10 mol% benzoic acid achieved a high oleic acid conversion of 96.7 % and a corresponding biodiesel yield of 91.5 %. Therefore, the proposed synergistic strategy of defect engineering and post-sulfonation is effective in constructing high-performance solid acid catalysts, demonstrating promising potential in green energy conversion applications.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2026
·
IF 3.6
Yan Yang,Haiqing He,Jian Su,Rui Jiang,Fawei Liu,Changrong Xu,Jiajun Lin,Taokai Wang,Yongkang Ji,Jinjiang Ren,Changbin Tan
Conductive polymer fabric composites (CPFCs) are high-performance electromagnetic interference (EMI) shielding materials featuring high conductivity, low density, flexibility, corrosion resistance, and processability. In this study, flexible hierarchically porous polyketone/silver nanoparticle (HPPK/Ag) core-shell nanofibers were fabricated via electrospinning followed by in situ silver deposition. The successful construction of the Ag coating was confirmed by X-ray diffraction and scanning electron microscopy. With increasing Ag content, both the electrical conductivity and EMI shielding effectiveness (EMI SE) of the HPPK/Ag membranes were significantly enhanced while retaining excellent flexibility and stability under mechanical deformation. The HPPK/Ag-20 hybrid membranes with a density of 0.26 g/cm 3 and thickness of 100 μm, achieved the maximum SSE and SSE/t values of 184.94 dB cm 3 /g and 17513.86 dB cm 2 /g across the X-band (8.2–12.4 GHz), respectively. This superior performance is attributed to a synergistic shielding mechanism: the continuous conductive Ag network induces strong reflection at the surface, while the hierarchically porous core facilitates efficient absorption loss through intensive interfacial polarization and multiple internal reflections. These results indicate that HPPK/Ag hybrid membranes are highly promising as lightweight and thin EMI shielding materials for wearable electronics. Highlights Porous flexible HPPK films were prepared by phase separation principle. The porous structure of HPPK nanofibers facilitated in situ Ag deposition. HPPK/Ag films exhibited high mechanical stability under mechanical deformation. Both reflection and absorption contribute to the enhanced EMI SE.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Nanomedicine
·
2026
·
IF 6.5
Jiaoyan Liu,Ronghua Tan,Congcong Wang,Guimin Li,Hong Zheng,Ying Wan
Purpose The repair and reconstruction of bone defects resulting from tumor-related bone resection surgery face significant challenges. Developing biomaterials with dual functions of tumor therapy and bone regeneration is a promising strategy for osteosarcoma treatment.Methods and Results In this study, gallium-doped bioactive glass nanoparticles (GaBG NPs) with Ga contents of 5–15 mol% were synthesize and integrated into thiolated chitosan (CS-NAC) and silk fibroin (SF) composites to fabricate hydrogels systems for post-surgical bone repair applications. The optimized hydrogel system exhibited good injectability with a gelation time of approximately 4 min, moderate mechanical strength (> 3 kPa), high porosity, and sustained release of Si, Ca, and Ga ions within physiologically safe levels. In vitro, studies demonstrated that the GaBG-embedded hydrogels remarkably advanced the proliferation and osteogenic differentiation of MC3T3-E1 cells, while significantly inhibiting the growth of UMR-106 osteosarcoma cells, with the 15GaBG/CNS hydrogel reducing cell viability to <5% at 72 h. In a rat model of critical-sized calvarial defects, new bone formation reached 55 ± 8% of defect area after 8 weeks without additional cells or growth factors. Moreover, an osteosarcoma model in nude mice confirmed that the 15GaBG/CNS hydrogel significantly suppressed tumor growth without inducing detectable adverse effects in major organs.Conclusion These findings indicate that the developed GaBG/CNS composite hydrogels possess considerable potential for simultaneous bone regeneration and osteosarcoma inhibition.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
·
2026
·
IF 2
Haichao Yu,Yan Xu,Jinfeng Zhao,Jiayue Huang
This study presents a label-free optical biosensor based on fully spherical liquid crystal (LC) microdroplets for the simple and sensitive pesticide detection. The LC–water interface was modified with myristoylcholine chloride (Myr), a cationic surfactant, resulting in a radial molecular configuration of the LC microdroplets, in which LC molecules orient perpendicularly to the droplet surface. Upon the introduction of acetylcholinesterase (AChE), enzymatic hydrolysis of Myr is triggered, inducing a transition to a bipolar configuration, where LC molecules align parallel to the droplet interface. Conversely, the presence of AChE inhibitors, such as dimethoate and fenobucarb, suppresses this hydrolysis, thereby preserving or restoring the droplets to a radial configuration. Experimental results reveal that the detection limits for fenobucarb and dimethoate reach 1 × 10−8 mg/mL and 1 × 10−9 mg/mL, respectively, both well below the maximum permissible levels specified by water quality regulations. This platform exhibits a sensitivity improvement of approximately two orders of magnitude compared to systems utilizing hemispherical LC microdroplets. Additionally, successful application to real water samples from Heilongjiang River validates its practical utility. Overall, this label-free, simple, and highly sensitive LC microdroplet-based biosensor represents a promising approach for environmental pesticide monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Nanomedicine
·
2026
·
IF 8.7
Congcong Yang,Jianyou Xia,Lunjie Zhao,Jianping Tao,Dan Li,Renxi Zhu,Qiang Wang,Haichen Shen,Baochao Zhang,Yujie Xu
Background In recent years, bladder defect repair has emerged as a critical issue in urological tissue engineering. Traditional treatment methods, such as autologous tissue transplantation and synthetic material repair, are limited by factors such as scarce donor sources, immune rejection, and postoperative fibrosis. Consequently, the development of nanofiber materials with bionic structures, biocompatibility, and anti-fibrotic capabilities has become a research hotspot. This research addressed the clinical needs associated with tuberculous bladder contracture, chronic cystitis, traumatic bladder rupture, and malignant tumors requiring partial cystectomy (such as localized non-muscle-invasive bladder cancer and urachal cancer), among other conditions. Excessive fibrotic scar formation following bladder surgery or injury is a primary contributor to reduced bladder compliance, diminished capacity, and impaired contractile function.Methods Using electrospinning technology, we designed and prepared composite nanofibers with varying proportions (9:1, 7:3, 5:5) of polycaprolactone (PCL) and gelatin (GEL). By conducting various experiments such as scanning electron microscopy (SEM), water contact angle (WCA) analysis, mechanical performance evaluation, and Fourier transform infrared spectroscopy (FTIR), the PCL/GEL (7:3) composite material was ultimately selected as the one with the best overall performance.Results Its fiber diameter was 612.14 ± 105.46 nm, water contact angle was 107.23°, and mechanical properties (tensile strength: 3.84 ± 0.5 MPa, elongation at break: 118.42 ± 4%, Young’s modulus: 19.50 ± 4.6 MPa). To enhance its anti-fibrotic properties, we incorporated mitomycin C (MMC) into the nanofiber matrix and prepared PCL/GEL/MMC nanofiber materials through blending and spinning. We then established a partial cystectomy model in rats, implanted the PCL/GEL/MMC nanofiber materials, and performed bladder imaging four weeks post-surgery to assess bladder capacity and morphological recovery. The CCK-8 assay was performed on days 1, 3, and 7, demonstrating that smooth muscle cells (SMCs) and endothelial cells (ECs) can effectively adhere, survive, and proliferate on these fibrous membranes, thereby confirming their biocompatibility. The anti-fibrotic properties of the materials were evaluated using immunofluorescence staining (IF)and immunohistochemical analysis (IHC).Conclusion The experimental results demonstrated that PCL/GEL nanofiber materials loaded with 0.02% MMC exhibited excellent biocompatibility and anti-fibrotic effects in bladder defect repair, providing a theoretical basis for their potential clinical application.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）