FUEL PROCESSING TECHNOLOGY
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2026
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IF 7.8
Yongjun Zhang,Xiaodan Zhang,Yulong Zhao,Jiayu Zhang,Hongjing Han,Enhao Sun,Yanan Zhang,Yanguang Chen,Chunming Xu
La/P/HZSM-5 with multi-level pore structure was synthesized via a stepwise dual-template strategy. • The La/P/HZSM-5 zeolite reduces Brønsted acidity and creates Lewis acidity. • The optimal acidity of La/P/HZSM-5 promotes radical and monomolecular cracking. The enhancement of ethylene yield via catalytic cracking presents a persistent challenge in addressing ethylene supply shortages. A series of bifunctional catalysts (La/P/HZSM-5) were prepared via simultaneous incorporation of lanthanum and phosphorus into HZSM-5 zeolite. The Py-IR analyses revealed that the simultaneous introduction of lanthanum and phosphorus resulted in a decrease in the Brønsted acid content of the La/P/HZSM-5 catalyst from the HZSM-5 (0.792 mmol/g) to 0.223 mmol/g. Further analysis of the structure-activity relationship between the catalyst and its performance reveals that the low Brønsted acid and porous structure effectively promotes the monomolecular decomposition of the cracking process. It was evident that the synergistic modification has resulted in the La/P/HZSM-5 catalyst demonstrating superior performance in n -octane cracking, with a cracking mechanism ratio (CMR) of 49.35. The balanced metal-acid functionality of the La/P/HZSM-5 catalyst was found to result in C 2 H 4 yields of 31.23% from n -octane and 19.18% from diesel, representing increases of 31.11% and 50.20%, respectively, compared to the parent HZSM-5 (23.82% and 12.77%). The present work provided a theoretical foundation for the design of metal-acid bifunctional catalysts, with a view to improving ethylene production in catalytic cracking processes. Download: Download high-res image (260KB) Download: Download full-size image
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EUROPEAN POLYMER JOURNAL
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2026
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IF 6.8
Xiuyan Guo,Yufei Cao,Ling Sun,Yuhan Wang,Xiaohui Liu,Yuanlin Ren,Yuesheng Li
Developing high-performance epoxy resins (EP) that integrate outstanding flame retardancy, mechanical reinforcement and optical transparency is a persistent challenge, often hindered by the detrimental effects of conventional additives. Herein, a novel hyperbranched polymeric flame retardant (HPBAE) containing phosphorus and borate ester moieties was synthesized from boric acid, ethanolamine and phenylphosphonic dichloride. Remarkably, incorporation of merely 2 wt% HPBAE substantially boosted the flammability resistance of resin to the UL-94 V-0 rating with 32.9% limiting oxygen index (LOI) and a 23.4% suppression in the peak heat release rate (PHRR). The superior flame retardancy arises from dual-phase action: condensed-phase formation of a P/B-rich thermal barrier char and gas-phase release of phosphorus radicals that quench H · /HO · combustion intermediates. Relative to pure EP, the EP/HPBAE-2 exhibited a 57.9% enhancement in tensile strength while retaining the optical transparency. The synergistic effects imparted by HPBAE not only provide a balanced property profile but also offer a viable design paradigm for developing high-performance, transparent and flame-retardant epoxy composites.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Shuwen Zhu,Huiqing Fan,Lin Lei,Yongbo Fan,Weijia Wang
Developing triethylamine (TEA) sensors using metal oxide semiconductors (MOS) presents challenges such as achieving high sensitivity, low operating temperatures, and reliable detection of trace TEA. In this study, a novel two-step solvothermal synthesis strategy was developed for the sequential fabrication of δ-MnO 2 nanosheets and δ-MnO 2 /WO 3 (WMn) heterojunction composites. The resulting WMn heterostructure features a unique morphology, where δ-MnO 2 nanosheets are encapsulated within a WO 3 matrix, forming well-defined layered interfaces and abundant active sites. This tailored structure significantly enhances the TEA sensing performance. In particularly, WMn1 sensor achieves an ultrahigh response of 515.37 to 20 ppm TEA at 140 °C. The sensor also exhibits an exceptionally low detection limit of 15.91 ppb, along with rapid response/recovery kinetics and long-term stability. The superior performance is attributed to the formation of n–p heterojunction and the synergistic effects of electronic and chemical sensitization, which optimize charge carrier dynamics, reduce interfacial resistance, and enhance surface reactivity. By focusing on interface engineering in heterojunction-based gas sensors, this study contributes to the strategic design of high-performance sensing materials, with potential applications in environmental monitoring and industrial safety.
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Journal of Materials Chemistry A
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2025
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IF 9.5
You Xu,Hao Chen,Youwei Sheng,Taoyuan Tian,Kai Deng,Ziqiang Wang,Hongjie Yu,Liang Wang,Hongjing Wang
Electrocatalytic urea synthesis from CO2 and NO3− offers a dual solution for greenhouse gas mitigation and industrial effluent valorization, while enabling renewable energy storage. Rational design of advanced catalysts for urea electrosynthesis represents a scientifically critical yet persistently challenging endeavor. In this study, we developed Pd–Bi dilute alloy metallene arrays grown on Cu foam (Pd–Bi/CF) by a two-step galvanic replacement strategy. The optimized Pd10–Bi90/CF could deliver a notable urea yield rate of 2165.2 μg h−1 cm−2 with 45.3% faradaic efficiency at −0.25 V vs. reversible hydrogen electrode (RHE). Experimental and computational studies validated that d-p orbital hybridization between d-block Pd and p-block Bi in Pd10–Bi90/CF modulates the electronic structure of active sites, thereby facilitating adsorption and activation of NO3− and CO2, synergistic generation of key intermediates *NH2 and *CO, and selective C–N coupling toward urea synthesis. This study demonstrates a viable pathway toward optimizing Bi-based catalysts for electrocatalytic urea synthesis.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Yinfei Wang,Mengjiao Li,Yuhong Su,Ying Sun,Chenqi Peng,Han Cheng,Bowen Wang,Hongxia Zhao
To address the challenges of low hydrogen peroxide(H 2 O 2 ) utilization efficiency in traditional homogeneous systems, this study successfully developed a novel photocatalytic colloidal clay mineral composite gel microsphere system (Fe 0 -OA-P/Gel-H 2 O 2 ). This system achieved efficient degradation of p-nitrophenol (PNP, 50 mg/L) in aqueous solutions through the synergistic activation of O 2 and H 2 O 2 to generate hydroxyl radicals (·OH), demonstrated a remarkable H 2 O 2 utilization rate of 91.55 %. The system exhibited 89.45 % PNP degradation efficiency with 64.87 % total organic carbon (TOC) removal. Under optimized conditions, the pseudo-first-order kinetic model revealed a degradation rate constant of 0.0084 min −1 , representing a 28.84-fold enhancement compared with H 2 O 2 systems. Radical quenching experiments combined with in situ EPR analysis confirmed a multi-path synergistic degradation mechanism to PNP, involving ·OH, superoxide radicals (·O 2 − ), and singlet oxygen ( 1 O 2 ). Material characterization through EDS and XRD spectra identified Fe-O-Si active sites on the microsphere surfaces. FTIR and XPS analyses verified successful encapsulation of Fe 0 within the gel matrix and its subsequent oxidation to Fe 2+ /Fe 3+ during photocatalytic processes. TG analysis demonstrated excellent thermal stability (weight loss <15 % below 150 °C), superior water absorption capacity (8.0 g/g) and adsorption capability for strongly polar organic pollutants. The introduction of oxalic acid as an electron shuttle significantly enhanced photoelectron transfer efficiency, increasing ·OH generation by 2–3 folds and achieving a quantum efficiency of 27.07 %. This study innovatively develops an efficient heterogeneous photocatalytic activation system through colloidal-clay mineral composite gel microspheres, which demonstrating significant potential for treating refractory organic pollutants in water and soil environments.
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高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Zeyun Yang,Hao Guo,Zhiguo Yu,Lei Sun,Ruixue Yan,Wenting Niu,Jianpeng Ma,Yu Yan,Wu Yang
Para-aminophenol (4-AP) is the toxic hydrolysate of the pharmaceutical molecule p-acetaminophen (ACOP) and their overexposure is harmful to ecological environment and physical health, So, designing a reasonable and efficient sensing platform for simultaneous detection of the trace targets is urgent. In this study, a novel electrochemical sensing interface was constructed for simultaneous detection of ACOP and 4-AP by in-situ growth of a flat rod-like lanthanide metal-organic framework Ce-MOF on MXene materials. 2D MXene nanosheets improved the conductivity and dispersion of the composites while Ce-MOF provided abundant adsorption sites and big specific surface area, thus significantly amplifying the electrochemical response signal. Post-oxidation of Ce-MOF induced electrocatalytic active Ce 3 + /Ce 4+ centers. As a result, the electrochemical sensor exhibited a wide linear range of 0.6 ∼ 360 μM and low detection limits (0.023 and 0.031 μM) for 4-AP and ACOP determination as well as satisfactory repeatability, stability and selectivity, and achieved accurate and synchronous detection of ACOP and 4-AP in actual tablets and environmental water samples.
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JOURNAL OF CHEMICAL THERMODYNAMICS
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2025
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IF 2.2
Min Zheng,Ali Farajtabar,Abolghasem Jouyban,William E. Acree,Hongkun Zhao
At 298.15 Kelvin, the method of isothermal dissolution was utilized in this current work at 101.0 kPa to obtain the experimental solubility data for the quaternary terephthalic acid (TA), p -toluic acid ( p -TLA) + 4-carboxybenzaldehyde (4-CBA) + N -methylpyrrolidone (NMP) system. Generation of the quaternary phase diagram was made through the Jãneck approach, which was based on the mutual solubility that was determined. Three zones of neat solid crystallization, one invariant point, along with three co-saturated curves, were included in the quaternary phase diagram. The three solids that were validated by Schreinemaker approach of wet residue were pure p -TLA, pure 4-CBA, and pure TAˑ2NMP, an adduct of TA with NMP with a mole ratio of 1:2. The area where TAˑ2NMP crystallizes is larger compared to that for p -TLA and 4-CBA. In addition, the model of NRTL was used to mathematically correlate and calculate the quaternary solid-liquid phase diagram. The experimental quaternary phase diagram was found to be in good agreement with the computed one obtained from the NRTL model as evidenced by a root-mean-square deviation of 0.14632 and a relative average deviation of 5.01 %. Separating TA from its mixtures by solvent adduct crystallization might be fundamentally supported by the quaternary phase diagram and thermodynamic models. Considering the investigation on the independent gradient model based on Hirshfeld partitions, as well as the 2D fingerprint plot and difference map of electron density, density difference and difference map of ELF analysis, the van der Waals forces are viewed as favorable weak interactions during the process of forming the adduct of TAˑ2NMP.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Quangang Chen,Shijun Xu,Kaijun Wei,Xianmin Gong,Xingtao Cheng,Yi He,Haitao Liu,Xiangshan Hou,Yi Sun,Han Liu,Qing Yuan
In this work, modified Cr 3 C 2 and two-dimensional layered WS 2 were deposited within a Ni-P plating layer via pulse electrodeposition, synthesizing a novel Ni-P-Cr 3 C 2 /PANI@WS₂ plating on N80 carbon steel. The synergistic effects of Cr 3 C 2 /PANI (polyaniline-coated Cr 3 C 2 ) and WS 2 on the coating were investigated. The results indicate that adding the aforementioned components considerably enhances the surface morphology, mechanical characteristics, and corrosion resistance of the composite coating, as shown below: The Ni-P-Cr 3 C 2 /PANI@WS 2 plating exhibited outstanding mechanical properties, with a microhardness of 800.16 HV, an average coefficient of friction of 0.143, a wear scar area of 67.70 µm 2 and a wear depth of 0.97 µm. Nanoindentation testing further indicates this composite coating possesses the highest hardness and elastic modulus, reaching 785.02 HV and 154.67 MPa respectively. Immersion testing in a 3.5 % NaCl solution demonstrates that the incorporation of Cr 3 C 2 /PANI and WS 2 significantly enhances the long-term corrosion resistance of the Ni-P plating. Moreover, the composite plating maintains excellent corrosion resistance even under acidic conditions, demonstrating its potential for demanding applications in aggressive environments.
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INORGANIC CHEMISTRY
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2022
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IF 5.436
Chen Li,Ke Liu,Cheng Jin,Dequan Jiang,Zimin Jiang,Ting Wen,Binbin Yue,Yonggang Wang
Cr1−δTe, as a unique series of defective compounds with a NiAs-type structure and periodic metal vacancies, has attracted intensive research interest because of its diversity in structure and property dependent on the tunable stoichiometric ratio. Another feature of these compounds is their ability to switch between NiAs- and MnP-type structures, in which there often exist composition-, temperature-, or pressure-induced phase transitions accompanied by intriguing physical property switching. Herein, we report the syntheses of a series of Cr1−δTe compounds with similar compositions but distinct crystal structures, their phase transitions, anomalous transport, and photoelectric conduction behaviors under high pressure (HP). For the three Cr1−δTe compounds with δ = 0, 0.25, 0.375, CrTe undergoes pressure-induced NiAs-to-MnP phase transition at around 15 GPa, while Cr3Te4 and Cr5Te8 undergo isostructural phase transitions at around 12 and 11 GPa, respectively. Electrical transport measurements indicate anomalous conduction behaviors: CrTe undergoes a semiconductor-to-metal transition at around 24 GPa, while Cr3Te4 and Cr5Te8 show unexpected metal–semiconductor–metal transitions sequentially upon compression. Besides, CrTe and Cr5Te8 exhibit pressure-induced n–p conduction-type switching at around 9 and 3 GPa, respectively, while Cr3Te4 shows p-type conductivity in the full pressure range. Local structure analyses based on in situ HP Raman spectra are performed to understand the structure and property evolutions of Cr1−δTe under HP. Defective transition-metal chalcogenides with pressure-induced NiAs-to-MnP phase transition and conduction-type conversion provide a potential platform for the rational design of photoelectric conversion devices.
研究领域:
凝聚态物理
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材料科学
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高压物理
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固态化学
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材料电子性质
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Small
·
2018
·Vol. 14
·期 7
·1702431
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IF 9.598
Jianhua Liu,Longhai Jin,Yinghui Wang,Xing Ding,Songtao Zhang,Shuyan Song,Daguang Wang,Hongjie Zhang
Design of new nanoagents that intrinsically have both diagnostic imaging and therapeutic capabilities is highly desirable for personalized medicine. In this work, a novel nanotheranostic agent is fabricated based on polydopamine (PDA)-functionalized Co-P nanocomposites (Co-P@PDA) for magnetic resonance imaging (MRI)-guided combined photothermal therapy and chemotherapy. The ultrahigh relaxivity of 224.61 m m −1 s −1 can enable Co-P@PDA to be applied as an excellent contrast agent for MRI in vitro and in vivo, providing essential and comprehensive information for tumor clinical diagnosis. Moreover, Co-P@PDA exhibit excellent photothermal performance owing to the strong near-infrared (NIR) absorbance of both Co-P nanocomposite and PDA. Highly effective ablation of tumors is achieved in a murine tumor model because the NIR laser not only induces photothermal effects but also triggers the chemotherapeutic drug on-demand release, which endows the Co-P@PDA with high curative effects but little toxicity and few side effects. These findings demonstrate that Co-P@PDA are promising agents for highly effective and precise antitumor treatment and warrant exploration as novel theranostic nanoagents with good potential for future clinical translation.
研究领域:
纳米医学
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诊疗一体化
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癌症治疗
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分子影像
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生物医学工程
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HYDROMETALLURGY
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2022
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IF 4.217
Jiadong Liu,Tsz Yau Mak,Zhe Meng,Xuyang Wang,Yulin Cao,Zhouguang Lu,Dawson Wai-Shun Suen,Xiao-Ying Lu,Yuanyuan Tang
Rechargeable lithium-ion batteries (LIBs) have been widely used in consumer electronics and electric vehicles . In terms of environmental restrictions and circular economy , proper treatment of spent LIBs is of great significance for achieving sustainable development. In this study, organic p -toluene sulfonic acid (PTSA) was employed to recycle valuable Li and Co elements from the spent LIBs for production of battery raw materials (e.g. Li 2 CO 3 and Co 3 O 4 ). Operation parameters such as PTSA concentration, hydrogen peroxide (H 2 O 2 ) concentration, solid-to-liquid ratio, leaching temperature and leaching time, were systematically investigated. Under the optimal conditions (0.9 vol% H 2 O 2 , 1.5 mol L −1 PTSA, 30 g L −1 solid-to-liquid ratio, 80 °C, and 60 min), the leaching efficiencies of commercial LiCoO 2 could reach ∼100% and 99% for Li and Co, respectively, while the corresponding values were about 95% and 93% for the spent LiCoO 2 . In addition, the selective precipitation of Co-rich compounds in cooled leachate allowed an effective separation of Co from the mixture. The high recovery yield of Co 3 O 4 and Li 2 CO 3 demonstrated the great potential of the PTSA-assisted leaching strategy in hydrometallurgical recycling of the spent LIBs for practical applications. Overall, this proposed recovery process is simple, efficient, and environmentally friendly and is of vital importance for rational treatment of spent LIBs.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Chunxia Pang,Huanhuan You,Lili Liang,Zhanguo Li,Xiaoyan Lin,Yaping Zhang,Hao Zhang,Xunhai Pan,Yang Hu,Yan Chen,Xuegang Luo,Haijun Wang
Radioactive aerosols in confined spaces of workplaces are the main source of internal radiation hazards for staff. Therefore, biomass-based electret fiber materials as alternatives of petroleum-based polymers will be of great potential in capturing radioactive aerosols due to its biodegradability , renewability and electrostatic effects. Herein, a fabrication strategy of bamboo pulp-based electret fiber aerogels by corona polarization is reported grounded on p-phenylenediamine (PPD)-modified bamboo pulp fibers (BCFs) and ethyl cellulose (EC). The morphology, chemical structure , and physical properties of BCFs before and after modification, as well as the electret properties and purification performance of fiber aerogel were analyzed. The results showed that PPD can be grafted uniformly on the surface of BCFs, making the fibers transform from irregular cylindrical shape with hierarchical surface to regular cylindrical shape with smooth surface, and can improve the surface potential of the fibers, one of the considerably great electret properties, from 0.00 kV to 1.33 kV when the graft amount of PPD was 0.500 g/g. The improvement in surface potential, leading by the grafted PPD structure which is a charge-trapping site confirmed by stoichiometric calculations, enhance the electrostatic trapping effect of the fibers on radioactive aerosol particles and shorten the purification time from 26 min to 15 min. Moreover, the electret fiber aerogel with modified BCFs (named as PPD-DABCFs) has a low air resistance of 56 Pa at the flow speed of 5.3 cm·s −1 , a light base weight of 62.7 g·m −2 and a long service life. Therefore, the bamboo pulp-based electret fiber aerogel has a promising application in the field of radioactive aerogel purification.
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