Journal of Cleaner Production
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2025
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IF 10
Dongyu Chen,Meizhu Chen,Xiangming Zhou,Shouwei Jian,Jianwei Zhang,Xinkui Yang,Yuechao Zhao
Minimizing indoor temperature fluctuations reduces dependence on heating and cooling systems, thereby lowering building energy consumption and carbon emissions and subsequently helping tackle global climate challenges. In this study, phase change capsules (PCCs) based on waste cooking oil derivative, Ca-alginate and nano SiO 2 were developed for foamed concrete (FC). The effects of nano SiO 2 dosage on PCC morphology, durability, thermal stability, and heat storage performance were systematically investigated. The distribution of PCCs within FC and the mechanical and thermal regulation properties of FC containing PCC were evaluated. The experimental results indicate that PCCs with 2 wt% nano SiO 2 exhibit a compressive strength of 26.29 N at 15 °C, the thermal decomposition onset above 200 °C with a notable mass loss of 40 %, and phase change enthalpy and temperature are 68.86 J/g and 20.1 °C, respectively. Ca-alginate/nano SiO 2 PCCs were uniformly dispersed and structurally intact within the FC matrix. Incorporation of 3 wt% Ca-alginate/Nano SiO 2 PCCs led to a 10.8 % reduction in compressive strength while exceeding the minimum strength requirements (>8.13 MPa) and achieving a 3.6 °C reduction in FC temperature variation. This study offers a sustainable strategy for improving building energy efficiency while promoting the recycling of waste cooking oil.
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Thermal Science and Engineering Progress
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2025
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IF 5.4
Lin Liu,Xin Liu,Qunzhi Zhu,Jiatian He
The global energy transition is urgent, and photovoltaic (PV) power generation, as an important method of utilizing solar energy, is playing an increasingly crucial role in the global energy transformation. However, the excessively high operating temperature of PV panels remains a pressing issue. High temperatures lead to an increase in the internal resistance of PV cells, thereby reducing their energy conversion efficiency and power generation performance. In this study, a highly efficient cooling PV module with moisture-absorbing properties was fabricated using a crosslinking-vacuum freeze-drying method, with agarose modification. The moisture-absorbing hydrogel absorbs and stores moisture from the atmosphere at night, and during the day, the excess heat from the PV panel is used to evaporate the moisture, providing cooling. Laboratory and outdoor experiments were conducted to validate this approach. At a solar irradiance of 1 kW/m 2 , the cooling effect of the PV panel can achieve a temperature reduction of approximately 9 ℃, with a 2.7 % increase in maximum power output compared to a standalone PV panel. Its low cost, significant cooling effect, and good outdoor applicability indicate that this hydrogel film-based cooling solution holds potential for practical applications.
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PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
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2025
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IF 1.8
Pengcheng Li,Zhixu Liu,Yaxuan Liu,Xin Wen,Zijian Li,Wei Zhou,Shouyu Wang,Weifang Liu
With excellent optoelectronic behavior, organic-inorganic hybrid perovskites have become leading contenders in the development of future photovoltaic and optoelectronic devices. Herein, two new lead-free, quasi-0D OIHPs, (C 6 H 16 N) 2 ZnI 4 and (C 6 H 16 N) 2 CdI 4 , are synthesized, and both crystallize in the monoclinic system (P2 1 /n space group) as confirmed via single-crystal X-ray diffraction analysis. Optical bandgaps are measured to be 4.595 eV for (C 6 H 16 N) 2 ZnI 4 and 4.255 eV for (C 6 H 16 N) 2 CdI 4 , which align well with those from first-principles calculations. Photoluminescence studies on (C 6 H 16 N) 2 ZnI 4 and (C 6 H 16 N) 2 CdI 4 show peaks at 393 and 382 nm, respectively, which are attributed to self-trapped exciton (STE) transitions induced by lattice distortion. Notably, (C 6 H 16 N) 2 CdI 4 exhibits unusual blue emission (quantum yield: 1.41%, lifetimes: 168.5 ps), while (C 6 H 16 N) 2 ZnI 4 shows blue luminescence with enhanced efficiencies (quantum yields: 19.64%, lifetimes: 473.7 ps). These findings broaden the application prospects of 0D OIHP materials in renewable energy and photonics.
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FOOD CHEMISTRY
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2025
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IF 9.8
Wenjun Li,Lemonia Antoniadi,Zhiwen Qi,Hongxia Chen,Leandros A. Skaltsounis,Hao Zhou,Chengzhang Wang
This study identified extra virgin olive oil rich in oleocanthal from six Chinese cultivars and enhanced its stability through microencapsulation. Ascolana Tenera oil, containing 100 mg/kg of oleocanthal, was selected. Microencapsulation via complex coacervation with gelatin and gum arabic, followed by spray drying, yielded spherical microcapsules (788.4 nm) with 70.75 % encapsulation efficiency. Characterization by Fourier Transform Infrared Spectroscopy, X-ray Diffraction, and Scanning Electron Microscopy confirmed structural stability and effective cross-linking. In vitro release studies across 5 food models showed rapid oleocanthal release (50.55 % in 120 min) in simulated gastric fluid, fitting the Korsmeyer–Peppas model with Fickian diffusion. In intestinal fluid, release reached ~70 %, following the Peppas–Sahlin model. Compared to unencapsulated oil, microcapsules exhibited approximately double antioxidant activity, due to improved oxidative stability and storage resistance. These findings suggest that microencapsulation preserves oleocanthal bioactivity and enables controlled release, making this approach promising for functional food applications.
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PubMed
高影响因子
Nanoscale
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2025
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IF 5.1
Jiaxin Li,Zhenyu Zhang,Hongxiu Zhou,Feng Zhao,Xiuqing Liu,Wei Wen
Epoxy resins are widely used in the coating, adhesive and electronics industries. However, it is a difficult-to-machine polymer owing to its nature of thermal softening and soft-plastic and corrosion resistance characteristics. To overcome these difficulties, surface roughness (Sa) is usually set at more than 4 nm, and material removal rate (MRR) is normally set lower than 2 μm h−1 during traditional chemical mechanical polishing (CMP). Nevertheless, atomic level surface roughness is desired by high-performance devices of epoxy resins. This poses a challenge in conventional CMP. To address this challenge, herein, a novel CMP was developed, and the CMP slurry included ceria, dichloromethane, sodium carboxymethyl cellulose and deionized water. After CMP, an atomic level surface roughness was achieved with an Sa of 0.198 nm, and the MRR was 5.46 μm h−1. To the best of our knowledge, both the surface roughness and MRR are the best values reported in the literature. An atom-molecular dual-scale model was proposed to investigate the dynamically interactive mechanism between dichloromethane and the epoxy resin. Fourier transform infrared and Raman spectroscopies revealed that the conformation of epoxy resin varied and surface swelling occurred during the diffusion of dichloromethane. Hydrogen atoms of dichloromethane were selectively adsorbed onto the oxygen atoms of ether bonds in the epoxy resin, reducing the energy of the chains. The adsorption energy was high, reaching up to −67.3 kcal mol−1, and this conformation was the most stable. During adsorption, 0.012 eV of energy was transferred to dichloromethane from the small crosslinked molecules. Molecular dynamics simulations and density functional theory were used to perform these calculations. Dichloromethane relaxed the resin surface, speeding up the migration rate of chains and reducing their energy of breaking. The combined effect of mechanical shear force, compressive force and relaxation of swelling led to the breakage of C–N bonds with the lowest energy in the chains. The broken short chains were wrapped in dichloromethane, separating from the surface of the resin with the slurry flow. Our results provide new insights into acquiring an atomic level epoxy resin surface with soft-plastic, thermal softening and corrosion resistance characteristics.
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PubMed
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Lingwu Meng,Maosheng Lin,Qirui Guo,Longzhao Zhang,Xiangyu Huang,Chenrao Hu,Shule Zhang,Weihua Ma
A novel Cu@SZN-2Si catalyst with both microporous and mesoporous structures was successfully fabricated using a new template agent (BCph-10-6-6). This catalyst showed outstanding catalytic performance in the selective catalytic oxidation (SCO) of triethylamine (TEA). Notably, in contrast to the conventional mesoporous Cu@SZ-2Si_CTAB synthesised with CTAB, Cu@SZN-2Si presented a flower-like nanosheet morphology. It boasted a higher density of Lewis acid sites and more surface-adsorbed oxygen (O ads ). Under the reaction conditions at 280 °C, the TEA conversion reached 100 %, and the N 2 yield was as high as 99.2 %. Moreover, in the presence of 10.0 vol% H 2 O vapour, the catalytic activity of Cu@SZN-2Si remained above 87.3 % at 280 °C and maintained stable operation for 130 h at 400 °C. Structural analysis coupled with DFT calculations revealed that Si incorporation enabled the crystallization of tetragonal ZrO 2 in the presence of SO 4 2− ions, while forming an amorphous SiO 2 that encapsulated the ZrO 2 surface. This structural characteristic significantly increased the number of isolated Cu 2+ species and acidic sites on the catalyst surface. The strong interaction between these isolated Cu 2+ species and acidic sites was crucial for promoting the adsorption and activation of TEA. In addition, in-situ DRIFTs results indicated that TEA first adsorbed on the Cu@SZN-2Si surface, followed by a thermal decomposition process. The cleavage of the C-N bond in TEA generated NH* intermediates, which were essential for N 2 generation and promoted the SCO of TEA.
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COMPOSITES COMMUNICATIONS
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2025
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IF 7.7
Guodong Han,Fangyuan Qi,Song Zhao,Yuxiang Jia,Junxiang Zhou,Yudeng Wang,Sai Sui,Bo Feng,Jun Wang,Jiafu Wang,Shaobo Qu
The microstructure design of new carbon nanomaterials always achieves unimaginable characteristics and performance. In this work, the influence of surface roughness ( Ra ) of porous carbon derived from Metal-Organic-Frameworks (MOFs) with different shapes on impedance matching and effective absorption bandwidth (EAB) has been given special attention. The rod shaped, spherical and sheet-like porous carbon materials are obtained at 700 °C from Ni-BTC, Ni-DOBDC and Ni-BPDC. The Ni-DOBDC-700 spherical porous carbon with a relatively large Ra (290 nm) exhibits excellent absorption performance. The minmium reflection loss ( RL min ) is -20.8 dB at 14 GHz and the EAB can reach at 6.7 GHz (11.1-17.8 GHz) when the thickness is 2.2 mm, which covers the Ku band. The spherical porous carbon, the Ni alloys and NiO particles serves the conduction channel, the sources of magnetic loss and interface polarization, respectively. The radar cross section (RCS) value of Ni-DOBDC-700 is less than -10 dB m 2 within the range of -60° to 60° and the maximum scattering intensity is only -16.5 dB m 2 at the thickness of 2 mm. The results provide a new design strategy for fabricating high performance MAMs with different morophology of MOFs derived carbon materials.
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ChemNanoMat
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2025
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IF 2.6
Zhixin Gao,Meng Yan,Zhen Sun,Teng Wang,Yaoming Zhang,Sen Lin,Yong Yang
Porous layered hydroxides has garnered significant attention for ion adsorption applications due to their unique combination of layered and porous structures. Herein, porous layered lanthanum hydroxide nanowires (NWs) is synthesized to efficiently adsorb Br − , utilizing the modulation of interlayer ions to optimize their performance. These NWs exhibit a porous surface structure and a positively charged surface, which increases the number of active sites and enhances their affinity for Br − . The layered hydroxide lanthanum acetate (LHL-acetate) NWs possess an adsorption capacity of 221 mg g −1 , a wide range of pH suitability (from 3.0 to 10.0) and remarkable stability, surpassing many previously reported adsorbents. The superior Br − adsorption performance of LHL-acetate NWs can be attributed to the synergistic effect between ion-exchange properties of interlayer anions and surface adsorption facilitated by the porous structure, which strengthens electrostatic interactions at the adsorbent-solution interface. Impressively, these NWs achieved 100% Br − removal from simulated wastewater with varying initial concentrations and flow rates in a fixed-bed adsorption system, highlighting the effectiveness of LHL-acetate NWs for advanced Br − removal in practical applications. This study reveals the structure-reactivity relationship of porous layered lanthanum hydroxide adsorbents and offers insights for the application of such materials in the adsorption domain.
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IONICS
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2025
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IF 2.6
Mise Youpo,Wang Shaohua,Shi Wen,Yin Yakun,An Juan,Zhou Xuejiao,Xia Wentang,Yang Wenqiang
This study presents a green strategy for synthesizing amorphous cobalt sulfide (Co–S) bifunctional electrocatalysts via a choline chloride–ethylene glycol deep eutectic solvent (DES) under ambient conditions, addressing ionic coordination dynamics and defect engineering for enhanced solid–state ionic/electronic transport in energy conversion. By modulating the equilibrium between Co 2+ and S₂O₃ 2- ions in Ethaline, we fabricated monodisperse Co–150S nanoparticles (~ 78 nm) with tailored sulfur content (S/Co = 1.9), an amorphous architecture, and abundant oxygen vacancies. These structural features synergistically optimized ionic diffusion pathways and electronic conductivity, achieving exceptional hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities in alkaline media. The Co–150S/NF electrode demonstrated a volcano-like sulfur-dependent activity profile, achieving the highest electrochemically active surface area (ECSA, 3.7 cm 2 ) and ultralow overpotentials of − 105 mV (HER) and 277 mV (OER) at 10 mA cm⁻ 2 , comparable to benchmark Pt/C and RuO₂ catalysts. Post-electrolysis characterization revealed dynamic structural reorganization during HER and OER operations, involving over 80 at% sulfur depletion and the formation of metastable Co-rich phases that maintained catalytic functionality. In overall water splitting, the system required only 1.62 V to drive 10 mA cm⁻ 2 with minimal activity decay (1.5 mV h⁻ 1 over 26 h). Mechanistic investigations revealed that sulfur incorporation initiates a multiscale optimization process: (i) DES–mediated ionic confinement prevents particle aggregation, promoting uniform nanosphere formation; (ii) modulation of the electronic structure through nonstoichiometric Co–S coordination; and (iii) defect engineering through the enrichment of oxygen vacancies. This study provides insights into ionic coordination mechanisms in non–aqueous solvents and defect–mediated ion transport in amorphous solids, suggesting a potential strategy for developing electrocatalysts applicable to related energy storage technologies.
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BIOSENSORS & BIOELECTRONICS
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2025
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IF 10.5
Zhenjie Zhang,Wei Wei,Anne Ailina Li,Chenhao Wang,Chengchen Tang,Qing Wang,Lianqun Zhou,Hui Kong
Here, we report a wearable device integrating a sweat collection unit and a molecularly imprinted polymer (MIP) - based sensor for the non-invasive detection of adrenaline (AD). In this paper, a new MIP method is proposed, which uses AD molecule as template, and electropolymerizes aniline and 3-aminophenylboronic acid (3-APBA) to form molecular imprinting. Surface modifications, incorporating carbon nanotubes (CNT) and MIP optimization, enhanced the device's specific surface area by 166.45% (± 2.82%), yielding a wide linear detection range of AD (10 -6 μmol L -1 to 10 3 μmol L -1 ). In this study, a three-dimensional response model was constructed by analyzing the current values corresponding to sweat pH levels (4.0-8.0) and AD concentrations, enabling a linear response and accurate prediction of AD levels in sweat. The integrated flexible electronic platform supports real-time data transmission via Bluetooth or NFC to a mobile application, facilitating efficient detection. Comprehensive integration and validation, including artificial sweat testing and correlation with ELISA results, underscore the sensor’s potential as a robust and versatile solution for wearable health monitoring.
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ACS Applied Nano Materials
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2025
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IF 5.5
Fangshan Li,Kaixiong Zhao,Yuchao Ke,Chun Yang,Bibo Wang,Fukai Chu,Weizhao Hu,Lei Song,Yuan Hu
Ethylene propylene diene monomer (EPDM) is widely used in automotive and HVAC sealing systems, where its long-term thermal-oxidative stability and fire safety are critical, yet challenged by high-temperature operation and flammability risks. To address these limitations, this work develops a surface-engineered boron nitride synergist (h-BN@PDT) through NaOH-assisted hydroxylation and subsequent functionalization with hexachlorocyclotriphosphazene and tannic acid. The modified h-BN@PDT integrates phosphorus/nitrogen flame-retardant groups and radical-scavenging phenolic hydroxyls, achieving multifunctional enhancements in EPDM composites. Thermal-oxidative aging tests (125 °C, 168 h) demonstrated exceptional stability, with 11.12 MPa of tensile strength for aged h-BN@PDT/EPDM, compared to 2.78 MPa of traditional flame-retardant EPDM without BN fillers. Doubling oxidation induction time was attributed to enhanced thermal conductivity and pyrolysis activation energy, which contributed to BN’s oriented heat-transfer pathways and phenolic hydroxyl-mediated radical quenching. Flame retardancy evaluations revealed that h-BN@PDT can effectively replace partial conventional flame retardants while enabling the composite to achieve a UL-94 V-0 rating with only 25 phr of flame-retardant loading. Cone calorimetry tests demonstrated a significantly reduced heat and smoke release rate. Mechanistic studies identified that h-BN@PDT enhances flame retardancy through the synergistic effects of the lamellar barrier effect and promoted catalytic charring capability. These mechanisms effectively inhibit heat transfer, block the diffusion of pyrolysis products, and restrict oxygen access, thereby substantially improving the flame-retardant efficiency of conventional systems. This work resolves the inherent trade-offs among flame retardancy, aging resistance, and mechanical integrity in EPDM, offering a scalable strategy for next-generation sealing materials in electric vehicles and high-temperature engineering applications.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Huan Chen,Yunhao Zhang,Wang Cheng,Shengxue Gong,Jia hui Hu,Yanhong Feng
The complete utilization of lignocellulosic biomass requires efficient and sustainable pretreatment methods, such as organic solvent pretreatment, which produces high-quality lignin and highly digestible carbohydrates. However, conventional organic solvent pretreatment faces challenges, including complex process flow, high solvent consumption, and reliance on strong acid-base catalysts. To address these limitations, this study developed a novel supercritical carbon dioxide (SCCO₂)-assisted solvent vapor pretreatment method. SCCO₂-assisted ethanol/water solvent vapor disrupted the biomass structure and dissolved specific components, while intermittent cooling induced solvent vapor-liquid phase transition for component separation and enrichment. Results demonstrated 92.26 % cellulose retention and 89.01 % lignin removal with good structural homogeneity of the separated lignin under solvents with only 25 % ethanol loading. The vapor-phase pretreatment design enabled solvent reuse, and biomass treated with twice-reused solvents still exhibited excellent component separation. Solvent consumption was significantly reduced, lowering the total solvent-to-biomass ratio of the pretreatment to 3.3: 1. Life cycle assessment (LCA) results indicated that reducing organic solvent usage could significantly minimize environmental impacts. This technique provides an environmentally efficient strategy for pretreating lignocellulosic biomass.
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危险品化学品经营许可证（带存储）