Particuology最新文献

{"title":"Exploring the therapeutic potential of microwave-assisted biosynthesized silver nanoparticles using Erica manipuliflora Salisb.: A comprehensive study on anticancer and antibacterial potentials","authors":"Funda Ulusu","doi":"10.1016/j.partic.2024.09.018","DOIUrl":"10.1016/j.partic.2024.09.018","url":null,"abstract":"<div><div>Silver nanoparticles (AgNPs) continue to attract interest due to their potential applications in biomedicine, especially in relation to their antibacterial and anticancer properties. In this respect, it is important to develop biosynthesis techniques that are environmentally friendly and include new sources. This is the first report on microwave-assisted green synthesis of silver nanoparticles using <em>Erica manipuliflora</em> Salisb. (<em>E.m AgNPs</em>). In this study, the anti-cancer and antibacterial activity of <em>E.m AgNPs</em> and <em>E. manipuliflora</em> extracts were evaluated. Characterization of <em>E.m AgNPs</em> were performed using UV–Vis spectroscopy FT-IR, XRD, SEM and TEM analyses. The UV–Vis absorption spectrum showed the characteristic peak of <em>E.m AgNPs</em> at <em>λ_max</em> = 425 nm. The SEM and TEM results indicated that the nanoparticles were spherical and ranged in size from 2.45 to 9.95 nm. The antibacterial results, it was determined that <em>E.m AgNPs</em> (50 mg mL⁻¹) (8.4–21.1 mm ZOI) caused more effective inhibition on both gram positive (<em>Bacillus subtilis</em>, <em>Staphylococcus aureus</em>, <em>Enterococcus faecalis</em>) and gram negative (<em>Escherichia coli</em>) bacteria compared to all plant extracts (50 mg mL⁻¹) (8.13–17.16 mm ZOI). Among the cancer (MCF-7 and HT-29) and healthy (HaCaT and HEK-293) cell lines, <em>E.m AgNPs</em> exhibited the highest cytotoxicity against MCF-7 cells (IC₅₀: 87.22 μg mL⁻¹). The hexane extract was the most effective inhibitory extract on cell proliferation of all cell lines and showed the highest cell inhibition in MCF-7 cells (IC₅₀: 43.06 μg mL⁻¹). The results revealed that both <em>E.m AgNPs</em> and <em>E. manipuliflora</em> extracts showed promising antibacterial activity against pathogenic bacterial strains and had potential anticancer activity.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 212-222"},"PeriodicalIF":4.1,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic reduction of gas back-mixing in bubbling fluidized beds with Geldart-B magnetizable particles","authors":"Qiang Zhang,&nbsp;Yalong Cao,&nbsp;Wankun Liu,&nbsp;Hao Guan,&nbsp;Donghui Liu,&nbsp;Quanhong Zhu","doi":"10.1016/j.partic.2024.09.016","DOIUrl":"10.1016/j.partic.2024.09.016","url":null,"abstract":"<div><div>This study investigated the performance of magnetic fields in reducing gas back-mixing in bubbling fluidized beds with Geldart-B magnetizable particles. The Peclet number (<em>Pe</em>) and axial dispersion coefficient (<em>D</em>_a,g) were determined using the one-dimensional dispersion model. A weak magnetic field reduced gas back-mixing to a certain extent, while a moderate field resulted in minimal decrease. The performance of a strong magnetic field varied significantly depending on the operation mode. Under the magnetization-FIRST operation mode, gas back-mixing was significantly reduced. The corresponding <em>Pe</em> and <em>D</em>_a,g were calculated as ∼76 and ∼3.6 × 10⁻⁴ m²/s, indicating that the gas flow approached the ideal plug-flow manner. However, when the magnetization-LAST operation mode was used, the strong magnetic field failed to mitigate gas back-mixing. Therefore, the performance of magnetic fields in reducing gas back-mixing depended not only on their intensity but also on their application sequence to the gas flow field.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 92-102"},"PeriodicalIF":4.1,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of pistachio shell-based porous carbon and its adsorption performance for low concentration CO2","authors":"Yuhua Zhang ,&nbsp;Yanmei Jin ,&nbsp;Song Li ,&nbsp;Hong Wu ,&nbsp;Huijuan Luo","doi":"10.1016/j.partic.2024.09.015","DOIUrl":"10.1016/j.partic.2024.09.015","url":null,"abstract":"<div><div>In this study, high-performance porous carbon for CO₂ adsorption was synthesized from pistachio shells and modified with urea to enrich nitrogen content in the porous structure. The effects of activation temperature, KOH-to-carbon ratio, and urea addition on the pore structure and CO₂ adsorption capacity of the porous carbon were investigated. Characterization was conducted using N₂ adsorption-desorption isotherms, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FT-IR). Results showed that under preparation conditions of 700 °C, KOH-to-carbon ratio of 2, and 15 wt% urea concentration, the synthesized GAC-15-2-700 porous carbon exhibited a maximum specific surface area of 1395 m²/g, micropore volume of 0.505 cm³/g, and N-5 peak area ratio of 65.57%. It achieved a CO₂ adsorption capacity of 3.56 mmol/g. Nitrogen functional groups on the porous carbon primarily existed as pyridinic N (N-6), pyrrolic/pyridinic N (N-5), and quaternary N (N-Q), with the enriched micropores and high N-5 content being crucial for CO₂ adsorption.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 103-114"},"PeriodicalIF":4.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation on the particle loss and applicability of aviation nvPM measurement methodology for wide particle size ranges","authors":"Minghua Wang ,&nbsp;Liuyong Chang ,&nbsp;Xuehuan Hu ,&nbsp;Meiyin Zhu ,&nbsp;Bin Zhang ,&nbsp;Guangze Li ,&nbsp;Zheng Xu","doi":"10.1016/j.partic.2024.09.012","DOIUrl":"10.1016/j.partic.2024.09.012","url":null,"abstract":"<div><div>The precise measurement of non-volatile Particulate Matter (nvPM) is outlined in aviation engine emissions regulations by the International Civil Aviation Organization (ICAO). However, assessing particle losses in the sampling and transfer unit presents challenges, raising concerns about the system's reliability. Moreover, nvPM emissions from small and medium aircraft engines, with thrust not exceeding 26.7 kN, vary widely in size, adding complexity to the measurement process. To provide a comprehensive analysis of particle losses in the sampling and transfer subsystems, this study established a test bench equipped with a nanoparticle generator. The generator simulates nvPM emissions from medium and small aircraft engines and can consistently produce nvPMs with a wide range of concentrations (10³-10⁷/cm³) and size distributions (20–160 nm). Thermophoretic loss verification experiments were conducted within the sampling pipeline under significant temperature differences, investigating the effects of particle size, temperature gradient, and airflow rate on thermophoretic particle losses. The experimental results demonstrated good agreement with the predictions of the model proposed by United Technologies Research Centre (UTRC). After correcting for temperature, the experimental data showed a maximum disparity of 2% under typical engine exhaust conditions, validating the predictability of the thermophoretic loss model for various engine types. Furthermore, verification experiments for particle diffusion and bending losses were performed. Comparative analysis with the UTRC model revealed nvPM inertial deposition under laminar flow conditions with low Reynolds numbers (Re). As the Re increased, the measured data more closely aligned with the simulations. Bending losses due to secondary flow patterns ranged from 1% to 10%, depending on particle size and flow rate. This finding supports the applicability of aviation nvPM measurement methods across a wide particle size range. This research provides theoretical support for future nvPM measurements on various aircraft engines, laying the groundwork for improved accuracy and reliability in emissions monitoring.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 154-165"},"PeriodicalIF":4.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research progress of high-entropy perovskite oxides in energy and environmental applications: A review","authors":"Jingrui Cao ,&nbsp;Shibo Wu ,&nbsp;Jiahao He ,&nbsp;Yang Zhou ,&nbsp;Pianpian Ma","doi":"10.1016/j.partic.2024.09.008","DOIUrl":"10.1016/j.partic.2024.09.008","url":null,"abstract":"<div><div>To address the global challenges associated with energy and environmental concerns, the design, development, and application of novel materials have emerged as pivotal drivers. Notably, high-entropy perovskite oxides (HEPOs) amalgamate the merits of both perovskite oxides and high-entropy materials, presenting significant potential in addressing numerous critical issues in energy and environment. This review delves into the recent advancements of HEPOs in these domains. Firstly, it provides an overview of prevalent synthesis techniques for HEPOs, alongside two emerging low-temperature, eco-friendly methods. Subsequently, current strategies to optimize the performance of HEPOs are summarized from three perspectives: compositional engineering, morphological engineering, and structural engineering. The review further underscores their applications in areas such as lithium-ion batteries, supercapacitors, electrocatalysts, and solid oxide fuel cells. Based on this foundation, potential performance optimization strategies and potential application areas of HEPOs are discussed. Finally, it identifies challenges faced by further development of HEPOs in energy and environmental applications and provides an outlook on future developments.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 62-81"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative characterization of granular size segregation: A critical review","authors":"Cong Leng,&nbsp;Chengfeng Sun,&nbsp;Zhehan Liao,&nbsp;Jian Xu","doi":"10.1016/j.partic.2024.09.013","DOIUrl":"10.1016/j.partic.2024.09.013","url":null,"abstract":"<div><div>Granular size segregation is an inevitable phenomenon in both natural and industrial processes. To understand the underlying mechanisms and develop effective optimization strategies, it is essential to employ robust methodologies that can quantitatively characterize and evaluate size segregation behaviors in granular systems. This review critically examines a wide variety of state-of-the-art methodologies from recent studies to quantify granular size segregation. The features of these methodologies are extracted and organized into a comprehensive framework. Four key questions are thoroughly discussed: evaluation criteria for identical segregation states, sensitivity to sample size, the influence of sampling division pattern, and the capability of handling multiple-component system. Finally, we provide an outlook on the future development of advanced and effective methodologies for granular size segregation characterization.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 166-177"},"PeriodicalIF":4.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanisms for different cyclabilities of commercial LiCoO2/artificial graphite pouch cells at −10, 0, and 25 °C","authors":"Renbo Deng ,&nbsp;Shiran Li ,&nbsp;Qianqian Wang ,&nbsp;Jiaying Liang ,&nbsp;Xufeng Zang ,&nbsp;Huiling Xia","doi":"10.1016/j.partic.2024.09.014","DOIUrl":"10.1016/j.partic.2024.09.014","url":null,"abstract":"<div><div>Although a few studies reveal the reasons of poor charge-discharge abilities for lithium-ion batteries based on LiNi_xMn_yCo_1-x-yO₂ at low temperature, there are still some practical issues worthy of further investigation. For instance, how the side reactions affect the cyclabilities of commercial LiCoO₂/artificial graphite (LCO/AG) cells at different low temperatures, and are the synergistic effects between the side reactions similar to that at room temperature? To answer the issues, the performances of a ⁓3 Ah LCO/AG pouch cell at different temperatures and C-rates are studied. Results illustrate that the obvious increase in charge transferring impedance especially in AG anode at low temperature causes large polarization, then reducing charge-discharge ability and even yielding lithium deposition at −10 °C and 0.5C under 3−4.45 V. Different from at room temperature, the side reactions such as electrolyte decomposition and electrode structural evolution reduce significantly at low temperature, which contribute to an excellent cyclability after 500 cycles at 0 °C. Instead, a series of chain reactions cause a relative lower cyclability at 25 °C. Lithium deposition is slight after 5 cycles at −10 °C, but become considerably severe after 20 cycles and cause rollover failure of capacity. All these results deepen the understanding on mechanisms for different behaviors of LCO/AG cells at low temperature and provide optimization direction.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 145-153"},"PeriodicalIF":4.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mixing state and evolutionary mechanism of oxalic acid homologs in Liaocheng, East China: Insights from seasonal and hourly observations","authors":"Jiangkai Ma ,&nbsp;Jingjing Meng ,&nbsp;Yanhui Wang ,&nbsp;Xuan Liu ,&nbsp;Xiaoting Zhang ,&nbsp;Kaiyue Yang ,&nbsp;Qiang Liu ,&nbsp;Zhanfang Hou","doi":"10.1016/j.partic.2024.09.011","DOIUrl":"10.1016/j.partic.2024.09.011","url":null,"abstract":"<div><div>Oxalic acid (C₂) is a significant tracer of secondary organic aerosols (SOA), yet its precursors, evolutionary processes, and formation mechanisms are not fully understood. This knowledge gap leads to uncertainties in evaluating the climate effect and global budget of SOA. Here we compared the size distribution, mixing fraction, and evolutionary mechanism of C₂-containing particles between summer and winter. In summer, the number of C₂ particles and their homologs decreased compared to winter. However, the proportion of C₂ relative to the total number of determined particles increased, indicating that the summertime particles are more aged. Higher relative aerosol acidity (R_ra) and lower in-situ pH (pH_is) in summer suggest that particles are more acidic during this season. Correlation analysis and temporal variation characteristics suggest that from 9: 00 to 15: 00 in summer, C₂ particles mostly originate from the photochemical decomposition of larger dicarboxylic aids, driven by O₃ concentration. Conversely, from 16: 00 to 20: 00, C₂ particles are predominantly formed through aqueous-phase oxidation, influenced by higher relative humidity (RH), aerosol liquid water content (ALWC), and acidity. Additionally, heavy metal particles were the predominant type of C₂ particles, and C₂ particles exhibited an opposite diurnal variation to Fe in summer, suggesting that the photolysis of iron oxalate complexes is an important sink of C₂ particles during this period. In winter, biomass burning (BB) particles were the most abundant, and a robust correlation between levoglucosan and C₂ particles indicated a substantial influence of BB on C₂ particles. The aqueous generation of C₂ particles from α-dicarbonyls driven by acidity was most effective when RH varied from 40% to 60% in the wintertime state of particles. These findings highlight the hourly and seasonal variations in the sources and evolutionary processes of SOA. Such variations must be considered in developing control measures and simulating the climate effect of SOA.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 223-234"},"PeriodicalIF":4.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"F-doping effects on microstructure and electrochemical performance of cathode material Li1.2Mn0.54Ni0.13Co0.13O2","authors":"Xiaoqian Sun ,&nbsp;Yunhui Du ,&nbsp;Weiyi Zhang ,&nbsp;Mengjiao Jin ,&nbsp;Ruiang Fan ,&nbsp;Peng Zhang","doi":"10.1016/j.partic.2024.09.009","DOIUrl":"10.1016/j.partic.2024.09.009","url":null,"abstract":"<div><div>Lithium-rich manganese-based (Li-rich Mn-based) cathode materials possess high specific capacity, low self-discharge rate and steady working voltage, but cycle performance and rate performance need to be further improved. In this study, cathode materials Li_1.2Mn_0.54Ni_0.13Co_0.13O_2-xF_x (x = 0, 0.02, 0.05, 0.08) are synthesized by the co-precipitation method with the two-step calcination process. And the F-doping effects on the microstructure and the electrochemical performance are investigated in the cathode materials Li_1.2Mn_0.54Ni_0.13Co_0.13O₂. The results indicate that among all the F-doped cathode materials, the crystal lattice parameters are increased, order degree and stability of the layered structure are improved. As for x = 0.05, cathode material Li_1.2Mn_0.54Ni_0.13Co_0.13O_1.95F_0.05 (LMO-F_0.05) shows the best cycle performance and rate performance with its capacity retention rate 87.7% after 100 cycles at 0.2 C and discharge capacity 117 mAh g⁻¹ at 5 C high power. It can be seen that F doping is a simple and crucial strategy to promote the Li ion diffusion and develop high performance layered cathode materials.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 82-91"},"PeriodicalIF":4.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigations into the flow dynamics of mixed biomass particles in a fluidized bed through Hilbert-Huang transformation and data-driven modelling","authors":"Bojian Qi ,&nbsp;Yong Yan ,&nbsp;Wenbiao Zhang","doi":"10.1016/j.partic.2024.09.010","DOIUrl":"10.1016/j.partic.2024.09.010","url":null,"abstract":"<div><div>Flow dynamics of binary particles are investigated to realize the monitoring and optimization of fluidized beds. It is a challenge to accurately classify the mass fraction of mixed biomass, considering the limitations of existing techniques. The data collected from an electrostatic sensor array is analyzed. Cross correlation, empirical mode decomposition (EMD), Hilbert-Huang transform (HHT) are applied to process the signals. Under a higher mass fraction of the wood sawdust, the segregation behavior occurs, and the high energy region of HHT spectrum increases. Furthermore, two data-driven models are trained based on a hybrid wavelet scattering transform and bidirectional long short-term memory (ST-BiLSTM) network and a EMD and BiLSTM (EMD-BiLSTM) network to identify the mass fractions of the mixed biomass, with accuracies of 92% and 99%. The electrostatic sensing combined with the EMD-BiLSTM model is effective to classify the mass fraction of the mixed biomass.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 115-123"},"PeriodicalIF":4.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}