MATERIALS RESEARCH BULLETIN
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2026
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IF 5.8
Huabo Li,Dong Bai,Lu Zhou
Eight post-synthesis acid treatments were systematically compared under identical polyol-derived Pt/C preparation conditions. • Citric acid treatment at pH 2 achieved 99% Pt loading efficiency and an ECSA of 106.2 m 2 gPt −1 . • The citric acid-treated catalyst delivered an ORR mass activity of 0.279 A mgPt −1 , exceeding that of commercial Pt/C. • After 30,000 potential cycles, the citric acid-treated catalyst showed a lower ECSA loss than commercial Pt/C (25.3% vs. 42.3%). Proton exchange membrane fuel cells (PEMFCs) are promising electrochemical energy-conversion devices, but their performance is limited by the sluggish kinetics of the oxygen reduction reaction (ORR). In this study, the effects of post-synthesis acid treatment on polyol-derived Pt/C catalysts supported on Vulcan XC-72 were systematically investigated. Eight chemically distinct acids, including citric, sulfuric, phosphoric, tartaric, oxalic, nitric, acetic, and hydrochloric acids, were compared under otherwise identical preparation conditions, followed by a separate citric-acid dosage series corresponding to final pH values of 2–5. The influences of acid chemistry and post-treatment pH on Pt retention, nanoparticle size and dispersion, Pt surface oxidation state, electrochemically active surface area (ECSA), ORR activity, and durability were evaluated. Thermogravimetric analysis showed that the citric-acid-treated catalyst exhibited a residual Pt fraction of 29.68 wt%, corresponding to approximately 99% of the nominal Pt loading. XRD and TEM analyses revealed Pt crystallite and particle sizes in the range of approximately 2.2–3.8 nm, with the citric-acid-treated catalyst showing relatively small and uniformly dispersed Pt nanoparticles. At pH 2, the citric-acid-treated catalyst achieved the highest ECSA of 106.2 m 2 gPt −1 and an ORR mass activity of 0.279 A mgPt −1 at 0.9 V vs. RHE, exceeding the values measured for commercial Johnson Matthey HiSPEC™ 3000 Pt/C (91.1 m 2 gPt −1 and 0.216 A mgPt −1 , respectively). XPS further showed that the citric-acid-treated catalyst retained a relatively high fraction of metallic Pt, consistent with its favorable electrochemical accessibility and surface state. After 30,000 potential cycles, the citric-acid-treated catalyst exhibited a lower ECSA loss than the commercial reference (25.3% vs. 42.3%) and less XRD-detectable crystallite coarsening. Single-cell measurements under matched cathode Pt loading also showed higher cell voltages for the citric-acid-treated catalyst over the investigated current-density range. These results indicate that post-synthesis citric acid treatment can improve Pt retention, nanoparticle dispersion, electrochemical accessibility, ORR activity, and structural durability through acid-dependent surface and Pt–carbon interfacial effects. The present protocol was demonstrated at a laboratory scale, yielding approximately 80 mg of catalyst per batch. Download: Download high-res image (152KB) Download: Download full-size image A comparative analysis was conducted on the oxygen reduction activity of Pt/C catalysts obtained under various chelating agents and their dosages. The optimal chelating agent and its corresponding amount were identified, and an in-depth investigation was carried out to understand the factors contributing to their superior performance.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124516
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IF 7.5
Bingkun Liu,Juncheng Guo,Hongda Huang,Yuhan Yang,Jingtao Zhang,Junling Zhang,Yonghui Zhang
Constructing a robust interfacial electric field is crucial for efficient spatial separation and directional migration of photogenerated carriers, which further boosts the performance of photocatalytic systems. In this study, a novel CF-supported SnS 2 /UiO-66-NH 2 high-low junction with intimate interface was fabricated via an in-situ solvothermal process. The optimal CF@SnS 2 /UiO-66-NH 2 -2 catalyst shows the best photocatalytic efficiency of 99.5% Cr(VI) removal at pH of 2.0 and nearly complete E. coli inactivation within 150 min, revealing its good photocatalytic redox capability. Moreover, the as-prepared composite possesses remarkable stability and desirable recycling performance. Mechanism analysis reveals that the intense internal electric field (IEF) and energy band bending are pivotal for promoting the separation and migration of charge carriers in the CF@SnS 2 /UiO-66-NH 2 high-low junction. This work offers new insights into the preparation and application of high-low junction photocatalysts.
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DESALINATION
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2026
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IF 9.9
Chao Li,Shuai Liu,Qiuwen Liu,Wenmin Zhao,Baixiong Liu,Hui Guo,Junshu Wu
A crystal-amorphous strategy yields MDUC-2 with rich oxygen vacancies. • MDUC-2 adsorbent can achieve fast adsorption equilibrium within 30 min. • After five adsorption-desorption cycles, the adsorption capacity remains above 90%. Traditional metal-organic framework (MOF) adsorbents are plagued by critical bottlenecks, including structural collapse, active site leaching, and inadequate cycling stability, during lithium extraction from salt lake brines. To address these challenges, a crystalline–amorphous heterointerface coupling strategy was adopted, whereby amorphous UiO-66-(COOH) 2 was grafted onto crystalline manganese dioxide to afford a composite adsorbent. This material achieved a maximum adsorption capacity of 33.26 mg/g in solutions, and retained over 90% of its initial adsorption capability after five consecutive adsorption-desorption cycles. The improved performance was primarily attributed to the stable inorganic scaffold constructed by crystalline manganese dioxide, which was utilized as a high-strength structural support, whereby volume expansion and structural collapse of the MOF component in high-salinity aqueous media were effectively mitigated. Furthermore, the adsorption capacity toward lithium ions was synergistically enhanced by surface manganese hydroxyl groups, free and coordinated carboxyl groups within the MOF framework, and the amorphous architecture. Concurrently, abundant oxygen vacancies were generated at the crystalline–amorphous heterointerface. These vacancies functioned as supplementary Li + adsorption sites, further optimizing the lithium extraction performance of the composite. A novel avenue for the rational design and fabrication of high-performance MOF-based adsorbents was thereby opened, enabling efficient lithium recovery from salt lake brines. Download: Download high-res image (148KB) Download: Download full-size image
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Ziqiang Liu,Fujian Tang,Yufang He,Jie Huang
Liquefied petroleum gas (LPG) is a highly flammable fuel widely used for cooking, heating and transportation, making real-time leak detection essential for preventing fire, explosion, and suffocation hazards. In this study, a room-temperature no-core fiber (NCF) sensor coated with CoFe 1.96 La 0.04 O 4 /LaFeO 3 heterostructures was developed for LPG detection. The heterostructures were characterized using XRD, Raman spectroscopy, SEM, TEM, XPS, PL spectroscopy, and UV–vis spectroscopy. Experimental results showed that La incorporation and heterostructure formation refined the particles size, improved surface accessibility, and modulated the electronic structure and band gap, thereby enhancing LPG adsorption, carrier redistribution, and the refractive-index response of the sensing film. Among the investigated compositions, the 1:1 CoFe 1.96 La 0.04 O 4 /LaFeO 3 heterostructure exhibited the best performance, achieving a sensitivity of −2.87 pm/ppm, a response/recovery time of 36/69 s, and a limit of detection of 39.7 ppm, together with excellent selectivity and stability. The effects of temperature and relative humidity were also quantified and compensated to improve detection accuracy. These results demonstrate that the proposed sensor is a promising, low-cost platform for LPG leak detection in domestic and industrial applications.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Jie Gao,Ang Xu,Jia Wu,Jinlong He,Ping Wang,Ying Liu,Qiang Wang,Bo Xu,Yuanyuan Yu,Man Zhou
PPy nanowires with ultrathin PTFE coating enable a tri-phase interface for enhanced O 2 transport and electron conduction. • The flexible EBFC achieves 334 μW·cm -2 power density in ambient air with long-term stability and mechanical robustness. • Self-powered glucose biosensing achieves a broad linear range of 1-20 mmol·L -1 with high fidelity and selectivity. Flexible and wearable enzymatic biofuel cells (EBFCs) have garnered considerable attention for their potential in self-powered sensing and portable electronics. However, their overall performance is often severely constrained by the sluggish oxygen reduction reaction (ORR) at the cathode, which stems from the low solubility and slow mass transfer of dissolved oxygen in the liquid phase. Herein, we propose a structural decoupling strategy to design and fabricate a flexible glucose/O₂ EBFC featuring an enhanced air-breathing biocathode. By conformally coating an ultra-thin, low-surface-energy polytetrafluoroethylene (PTFE) layer onto a 3D conductive scaffold of polypyrrole nanowires (PPy NWs) grown on carbon cloth, a robust gas–liquid–solid triple-phase interface is established. This hierarchical architecture significantly accelerates gas-phase oxygen mass transfer without compromising the intrinsic electrical conductivity. Consequently, the assembled device delivers an open-circuit voltage of ~0.8 V and an outstanding maximum power density of ~334 μW·cm −2 in ambient air. Furthermore, by eliminating the cathodic kinetic bottleneck, the EBFC functions as a self-powered glucose sensor, demonstrating a broad and robust linear response (1–20 mmol·L −1 , R 2 = 0.9903) that encompasses severe pathological glycemic levels, alongside high selectivity and stability. These distinctive capabilities position the developed EBFC as a highly promising self-sustaining platform for next-generation smart textiles and continuous wearable health monitoring. Download: Download high-res image (149KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Wenzhuo Lv,Xuefeng Zhang,Xingong Li,Xin Guo,Yiqiang Wu
Bridge–Gel Co-Path reactor couples polarization with nanoplastic enrichment. • Ti–O–P–O–Zr bridges enhance interfacial piezoresponse to ~145 pm V −1 . • Hydrogel enrichment gives a PS NPs adsorption capacity of 312.4 mg g −1 . • UTPCH achieves 68.4% apparent PS NPs removal without light or oxidants. • Reactor-level design improves charge use and substrate delivery. Piezocatalytic treatment of polystyrene nanoplastics (PS NPs) is limited by inefficient conversion of mechanical input into interfacial charge and by poor delivery of dilute particles to reactive sites. Here, we constructed a Bridge–Gel Co-Path (BGCP) reactor that coupled a Ti-O-P-O-Zr-bridged UiO-66-NH 2 /C,N-TiO 2 heterointerface with a polyethyleneimine-modified cellulose nanofibril hydrogel. The phosphate-mediated covalent–ionic bridge integrated the two components into a strongly coupled heterointerface with enhanced interfacial polarization and charge redistribution. Bader charge analysis indicated pronounced interfacial charge redistribution around the phosphate bridge, with ca. 1.20 |e| localized in the bridged region, while piezoresponse force microscopy yielded an apparent local piezoresponse coefficient (d 33 , eff ) of ca. 145 pm V −1 . The hydrogel network provided both strain relay and substrate enrichment, with a Langmuir maximum adsorption capacity of 312.4 mg g −1 toward PS NPs. Under 40 kHz ultrasonic excitation, the BGCP reactor achieved 68.4% overall apparent removal of PS NPs after 75 min of adsorption pre-equilibration followed by 105 min of mechanical excitation, retained 87.6% of its initial activity after ten cycles, and kept the individual leached concentrations of Ti, P, and Zr below 10 ppb in the effluents collected during cycling. Calorimetry-derived apparent energy metrics were provided to contextualize the energy scale of the present laboratory configuration. These results established the integration of a bridged polarization interface with a transport-active hydrogel network as an effective reactor-design strategy for intensifying mechanically driven interfacial oxidation of dilute colloidal pollutants. Download: Download high-res image (183KB) Download: Download full-size image
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CHEMICAL PHYSICS LETTERS
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2026
·
IF 2.9
Xingping Fu,Xiaoru Feng,Zijie Zheng,Yuting Xu,Lingshuang Xie,Meizhen Jiang
A two-fold interpenetrated cage-based Fe 2 Co-MOF was synthesized. • Fe 2 Co-MOF exhibits permanent microporosity with cage-confined cavities. • Fe 2 Co-MOF exhibits high C 3 H 4 uptake and moderate C 3 H 4 /C 3 H 6 selectivity. • GCMC simulations reveal that cage-confined cavities and multiple weak host-guest interactions account for the preferential adsorption of C 3 H 4 . The removal of propyne (C 3 H 4 ) from propylene (C 3 H 6 ) is essential for polymer-grade C 3 H 6 but remains challenging due to their similar physicochemical properties. Herein, we report a cage-based metal-organic framework, [Fe 2 Co(μ 3 -O)(BTB) 4/3 (BPDC)(H 2 O) 3 ] n (Fe 2 Co-MOF), featuring a two-fold interpenetrated framework and permanent porosity for preferential C 3 H 4 over C 3 H 6 . At 298 K, Fe 2 Co-MOF exhibits a higher uptake of C 3 H 4 than C 3 H 6 , reaching 91.5 cm 3 g −1 at 0.1 bar and 207.4 cm 3 g −1 at 1 bar. Experimental results and GCMC simulations indicate stronger host-guest interactions with C 3 H 4 , highlighting Fe 2 Co-MOF as a promising adsorbent for preferential adsorption of C 3 H 4 over C 3 H 6 . A two-fold interpenetrated cage-based Fe 2 Co-MOF with permanent microporosity and cage-confined pores exhibits high C 3 H 4 uptake and moderate C 3 H 4 /C 3 H 6 selectivity. GCMC simulations reveal that cage-confined cavities and multiple weak host-guest interactions account for the preferential adsorption of C 3 H 4 . Download: Download high-res image (92KB) Download: Download full-size image
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EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
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2026
·
IF 5.1
Zhixiong Wang,Renhua Fang,Yi He,Weiwei Liao,Changzhao Jiang,Jincui Ye,Xiumei Jiang
Transdermal patches are widely used for local anti-inflammatory therapy, but their delivery efficiency is often limited by the barrier function of the stratum corneum. This study aimed to develop an optimized dracorhodin transdermal patch and to evaluate temperature-controlled heating as a physical enhancement strategy using ketoprofen patches as a representative anti-inflammatory model. Dracorhodin ethanol extract was prepared by ethanol extraction and rotary evaporation, and a high-performance liquid chromatography method was established for quantitative analysis. Azone, isopropyl myristate, and acrylate pressure-sensitive adhesive were screened as key excipients, and dracorhodin patches were prepared using a coating method. The optimized patches were evaluated for appearance, content uniformity, adhesion, in vitro skin permeation, and anti-inflammatory activity using an egg white-induced rat paw swelling model. Meanwhile, the effects of heating temperature and heating duration on ketoprofen patch permeation were investigated using in vitro skin permeation experiments, in vivo fluorescence imaging, and pharmacokinetic analysis. The optimized dracorhodin patch formulation contained 19.6% azone, 11.5% isopropyl myristate, and 47.1% pressure-sensitive adhesive. The three batches of patches showed uniform appearance, acceptable content uniformity, stable adhesion, and a cumulative permeation amount of 13–20 μg/cm² within 28 h. In vivo pharmacodynamic evaluation showed that the dracorhodin patch produced a swelling inhibition rate of 62.18% at 4 h, approaching that of the ketoprofen positive control. For ketoprofen patches, temperature-controlled heating significantly enhanced transdermal permeation, with the permeation rate increasing from 10.11 to 20.56 μg/cm²·h as the heating temperature increased from 33°C to 45°C. Heating for 90 min at 40°C provided an effective balance between permeation enhancement and practical application. Fluorescence imaging and pharmacokinetic results further confirmed that thermal treatment improved drug diffusion and systemic exposure. These findings suggest that formulation optimization and temperature-controlled physical enhancement are complementary strategies for improving anti-inflammatory transdermal patch delivery and may provide a basis for the development of advanced patch-based drug-device combination products.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Ze Xiao,Yanan Li,Meile Chu,Ming Li,Yang Zheng,Yanfei Liu,Chen Zhang,Yongli Chai
Aqueous phase reforming of methanol (APRM) provides a promising strategy for in-situ hydrogen production, yet its practical application is hindered by insufficient catalyst activity and stability. Herein, we report a carbon-coated copper catalyst with uniformly dispersed nanoparticles for efficient APRM. The Cu@C catalyst exhibits significantly enhanced performance in the presence of KOH, achieving an average hydrogen productivity of 236.2 μmol H2 /g cat. /s at 220 °C, nearly triple that under alkali-free conditions. Notably, the hydrogen purity reaches 99.99% with negligible CO x and alkane byproducts. Mechanistic studies reveal that methanol reforming proceeds via the methyl formate pathway, while KOH promotes reaction efficiency mainly by in-situ CO 2 capture to form KHCO 3 and by removing poisonous CO species. The synergy between Cu@C and KOH boosts catalytic activity, ensures high-purity hydrogen production, and offers a viable approach for stable and scalable APRM-based hydrogen generation.
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Food Bioscience
·
2026
·
IF 6.2
Qisijing Liu,Zijia Song,Yaya Wang,Binying Fu,Shijie Li,Shuo Wang
This study investigated how heat, mild pressurization, and lactose jointly regulate the structure and IgG-recognized antigenicity of α-lactalbumin (α-LA). An indirect competitive enzyme-linked immunosorbent assay (icELISA) was developed to quantitatively monitor α-LA immunoreactivity after thermal, pressure-assisted, and lactose treatments. Structural changes were characterized by sodium dodecyl sulfate–polyacrylamide gel electrophoresis, intrinsic fluorescence spectroscopy, free sulfhydryl analysis, scanning electron microscopy, OPA-reactive amino-group analysis, Maillard-related optical indices, and molecular docking. Heat and mild pressurization synergistically reduced α-LA antibody recognition under the tested conditions. Lactose showed a condition-dependent dual effect: under mild heating, it helped preserve α-LA immunoreactivity, whereas under high-temperature and pressure-assisted conditions, this protective effect was lost. The decreased OPA-reactive amino-group levels and increased A294/A420 values in the α-LA/lactose system confirmed enhanced Maillard reaction progression under severe processing conditions. Molecular docking, used as a pre-reaction non-covalent interaction model, suggested that lactose could initially contact epitope-adjacent regions of native α-LA, including residues around Arg10 and Lys13. In commercial samples, pasteurized milk retained higher α-LA immunoreactivity than ultra-high-temperature and reconstituted milk, and acceptable recovery was obtained in a spiked soymilk matrix. These findings reveal a condition-dependent switch in the role of lactose from a conformational stabilizer to a Maillard-associated contributor to α-LA antigenicity modulation. The proposed icELISA provides a practical complementary immunochemical tool for evaluating processing-induced differences in dairy products.
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Advanced Science
·
2026
·
IF 14.1
Tianye Fang,Jinzhe Tong,Feng Feng,Cong Liu,Chang Shu,Jiaying Zhu,Shibo Zhang,Shuyue Deng,Wanchao Zuo,Yuhan Song,Jun Yang,Yanmin Ju,Yingying Xing,Jianjun Dai
Helicobacter pylori ( H. pylori ) is a leading cause of gastric cancer, but current antibiotic‐based therapies face challenges like low eradication rates, high recurrence, and intestinal flora disruption. Iron is critical for H. pylori ’s survival and pathogenicity, as the bacterium relies on maintaining iron homeostasis for normal proliferation, metabolism, and colonization of the stomach. Inspired by this, we propose a “nutritional trap” strategy, using bismuth as “fake iron” to trick the H. pylori ’s iron‐uptake system, triggering iron starvation. We then developed a bismuth‐based nanodrug (Bi‐TP@FU, TBF) modified with tea polyphenols and fucoidan for enhanced H. pylori targeting and gastric mucosal penetration. TBF targets and adheres to the surface of H. pylori by binding to the BabA protein, then induces iron starvation and metabolic disorders through competition between bismuth and iron, ultimately killing multidrug‐resistant strains without inducing resistance. Interestingly, TBF selectively eliminated pathogens while preserving probiotics, thus maintaining intestinal flora balance, which is superior to quadruple therapy. This novel oral TBF, which relies on a nutritional trap‐based bactericidal strategy, offers a new option for antibiotic alternative therapy of bacterial infections. A “nutritional trap” strategy centered on disrupting bacterial iron homeostasis is proposed. The synthesized Bi‐TP@FU (TBF) can target Helicobacter pylori , interfere with the bacterial iron uptake and utilization processes to disrupt its iron homeostasis, induce bacterial death, and meanwhile preserve the balance of the intestinal flora. This finding further offers a novel approach for antibiotic‐alternative therapies against Helicobacter pylori infection.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 35
·26069-26087
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IF 4.4
Wang Jin,Qiao Zongwen,Zheng Chunyue,Chen Zhengyan
Epoxy resin (EP) composites with high thermal conductivity are critically important for effective thermal management in modern electronics. However, their development is often hindered by the intrinsically low thermal conductivity of epoxy. In this study, a vertically aligned, neuron-mimetic three-dimensional graphene nanoribbon–carbon nanotube/carbon (GNR–CNT/C) foam was fabricated through gel compression and carbonization of a GNR–CNT/carboxymethyl chitosan (CMCS) hybrid aerogel. This rationally engineered architecture promotes directional phonon transport while substantially reducing interfacial thermal resistance (ITR). After epoxy infiltration, the resulting GNR–CNT/C/EP composite exhibits a high out-plane thermal conductivity of 6.79 W·m⁻ 1 ·K⁻ 1 at a low filler loading of 2.43 vol%, yielding an exceptional thermal conductivity enhancement (TCE) of 1356%. The composite also demonstrates moderate electrical conductivity, with a volume resistivity of 1.04 × 10 3 Ω·cm, and superior mechanical performance—compressive strength reaches 147.26 MPa, a 76% improvement over neat EP. Combined experimental and theoretical analyses reveal that the multidimensionally continuous and oriented heat transfer pathways within the GNR–CNT/C foam effectively mitigate interfacial phonon scattering. This work provides a feasible and scalable route for designing high-performance thermal interface materials with integrated multifunctional attributes for advanced thermal management.
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危险品化学品经营许可证（带存储）