Solid State Sciences最新文献_第2页

Comparing study of electrical transport properties of bulk Y-123 synthesized by modified wet and dry synthesis methods 改性湿法和干法合成体Y-123的电输运性质比较研究

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-04-09 DOI: 10.1016/j.solidstatesciences.2025.107921

Siew Hong Yap , Mohd Mustafa Awang Kechik , Arebat Ryad Alhadei Mohamed , Hussien Baqiah , Soo Kien Chen , Kean Pah Lim , Thareiz Hakim Zailani , Muhammad Kashfi Shabdin , Khairul Khaizi Mohd Shariff , Yazid Yaakob , Mohd Hafiz Mohd Zaid , Mohd Khalis Abdul Karim , Nurul Farizah Hisamuddin , Syahrul Humaidi , Kar Ban Tan , Abdul Halim Shaari , Muralidhar Miryala

{"title":"Comparing study of electrical transport properties of bulk Y-123 synthesized by modified wet and dry synthesis methods","authors":"Siew Hong Yap , Mohd Mustafa Awang Kechik , Arebat Ryad Alhadei Mohamed , Hussien Baqiah , Soo Kien Chen , Kean Pah Lim , Thareiz Hakim Zailani , Muhammad Kashfi Shabdin , Khairul Khaizi Mohd Shariff , Yazid Yaakob , Mohd Hafiz Mohd Zaid , Mohd Khalis Abdul Karim , Nurul Farizah Hisamuddin , Syahrul Humaidi , Kar Ban Tan , Abdul Halim Shaari , Muralidhar Miryala","doi":"10.1016/j.solidstatesciences.2025.107921","DOIUrl":"10.1016/j.solidstatesciences.2025.107921","url":null,"abstract":"<div><div>This qualitative comparative study discusses the fabrication of bulk YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> (Y-123) using various modified synthesis methods, including thermal treatment, solid-state, and thermal decomposition methods in ambient conditions. The comparison analysis yielded the following findings for all synthesis methods: i) good orthorhombicity value of crystal structure (∼0.008) (ii) oxygen content close to theoretical value (∼6.8) (iii) presence of non-superconducting phases such as Y<sub>2</sub>BaCuO<sub>5</sub> (Y-211), BaCuO<sub>2</sub> and CuO (iv) slightly varying of <em>T</em><sub>c-onset</sub> value, ∼92 K and (v) Thermal treatment produced a sharp transition width of temperatures, Δ<em>T</em><sub>c</sub> (3.2 K), while the decomposition method resulted in sharp transition widths of mean field temperatures, such as Δ<em>T</em><sub>c</sub><sup>onset−MF</sup> (1.5 K), with the highest composition of the Y-123 phase (98.3 %). Additionally, the surface morphology for all synthesis methods showed different trends in compactness. The ratio of the elements contained Y:Ba:Cu in all specimens was close to the ratio of 1:2:3. The significance of promptly grinding and subjecting to a brief heat treatment process for producing high-quality Y-123 materials is emphasized in this relative analysis. The thermal decomposition method targets a novel and advanced modified dry synthesis method to prepare superior high-temperature superconductors, especially Y-123, with cost-effectiveness and time-saving benefits, while also preserving environmentally friendly practices.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107921"},"PeriodicalIF":3.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and characterization of new alloys of ternary Zr-Cu-Bi system 新型 Zr-Cu-Bi 三元合金的合成与表征

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-04-05 DOI: 10.1016/j.solidstatesciences.2025.107922

A. Balińska , A. Gil , V. Pavlyuk

引用次数: 0

Low-temperature performance of Zn-modified graphite and hard carbon as anodes for lithium-ion batteries 锌改性石墨和硬碳作为锂离子电池阳极的低温性能

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-04-05 DOI: 10.1016/j.solidstatesciences.2025.107923

Ayaulym Belgibayeva , Uldana Kydyrbayeva , Makpal Rakhatkyzy , Gulnur Kalimuldina , Arailym Nurpeissova , Zhumabay Bakenov

{"title":"Low-temperature performance of Zn-modified graphite and hard carbon as anodes for lithium-ion batteries","authors":"Ayaulym Belgibayeva , Uldana Kydyrbayeva , Makpal Rakhatkyzy , Gulnur Kalimuldina , Arailym Nurpeissova , Zhumabay Bakenov","doi":"10.1016/j.solidstatesciences.2025.107923","DOIUrl":"10.1016/j.solidstatesciences.2025.107923","url":null,"abstract":"<div><div>Graphite has been the primary anode material in commercial lithium-ion batteries (LIBs) due to its lithium-like charge/discharge profiles and stable performance at room temperature. However, its effectiveness in low-temperature conditions remains a significant limitation for LIB applications. Hard carbon, an alternative anode material, offers potential advantages in low-temperature environments due to its unique porous structure and lithium storage mechanism. In this study, Zn-modified graphite and hard carbon electrodes were developed by partially substituting the conductive agent acetylene black with 1 wt% Zn. The impact of this Zn addition on the low-temperature performance of the anodes and solid electrolyte interphase (SEI) formation was systematically investigated, comparing Zn-modified electrodes to pristine Zn-free ones. The results indicate that Zn incorporation enhances electrochemical performance by improving electrical conductivity and fostering the development of a thin, uniform LiF-rich SEI layer, which reduces charge-transfer resistance and accelerates electrode activation at low temperatures.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107923"},"PeriodicalIF":3.4,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Enhanced cycling stability of lithium-ion batteries with Sn-MOF derived Sn anodes encapsulated within a three-dimensional carbon framework 在三维碳框架内封装Sn- mof衍生的Sn阳极增强锂离子电池的循环稳定性

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-04-01 DOI: 10.1016/j.solidstatesciences.2025.107920

Yuning Cui , Zuxin Xu , Hailong Qiu , Di Jin

{"title":"Enhanced cycling stability of lithium-ion batteries with Sn-MOF derived Sn anodes encapsulated within a three-dimensional carbon framework","authors":"Yuning Cui , Zuxin Xu , Hailong Qiu , Di Jin","doi":"10.1016/j.solidstatesciences.2025.107920","DOIUrl":"10.1016/j.solidstatesciences.2025.107920","url":null,"abstract":"<div><div>Sn anodes, noted for their abundance and high theoretical capacity, have garnered significant attention for lithium-ion batteries. Nonetheless, their significant volume expansion poses challenges, leading to rapid capacity fade and electrode degradation. To address this, a straightforward high-temperature calcination method is employed to encapsulate nanoscale Sn particles within a porous, honeycomb-structured three-dimensional carbon framework. This approach effectively mitigates volume expansion, improves cycling performance, prevents Sn aggregation, and maintains structural integrity. Notably, the Sn/C/3DC composite exhibits remarkable electrochemical properties, maintaining high charge-discharge capacities (1044.0 and 1047.9 mAh g<sup>−1</sup>) over 1000 cycles at 0.5 A g<sup>−1</sup>. Even after 4000 cycles at a current density of 5 A g<sup>−1</sup>, it retains a discharge capacity of 328.5 mAh g<sup>−1</sup>. This study paves the way for the advancement of sophisticated metal anode materials for lithium-ion batteries.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107920"},"PeriodicalIF":3.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mesoporous ZnO integrated CeF3 nanoparticles for X-ray PDT 介孔ZnO集成CeF3纳米颗粒用于x射线PDT

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-03-29 DOI: 10.1016/j.solidstatesciences.2025.107918

Asnit Gangwar , Santhosh Kumar Alla , Ankur Sharma , Madhuri Verma , Subham Kumar Shaw , Tapas Das

{"title":"Mesoporous ZnO integrated CeF3 nanoparticles for X-ray PDT","authors":"Asnit Gangwar , Santhosh Kumar Alla , Ankur Sharma , Madhuri Verma , Subham Kumar Shaw , Tapas Das","doi":"10.1016/j.solidstatesciences.2025.107918","DOIUrl":"10.1016/j.solidstatesciences.2025.107918","url":null,"abstract":"<div><div>We report a modified two stage method to develop CeF<sub>3</sub> embedded mesoporous ZnO nanostructures for the X-ray arbitrated photodynamic therapy (X-ray PDT) to enhance therapeutic efficacy. X-ray and electron diffraction patterns confirmed the phases of CeF<sub>3</sub>-ZnO nanocomposite. Transmission electron microscopy (TEM) revealed the morphologies and sizes for both the phases <em>i.e.</em> CeF<sub>3</sub> (5–10 nm) and ZnO (150–250 nm) in the nanocomposite. Photoluminescence spectroscopy was employed to probe their energy emission and absorption characteristics of the CeF<sub>3</sub>-ZnO mesoporous nanocomposite. Moreover, a strong emission characteristic of Zn<sup>2+</sup> ions via energy transfer from Ce<sup>3+</sup> ions is proposed by energy transfer mechanism. The colloidal stability, hydrodynamic size, and surface charge distribution of the nanocomposite were analyzed using dynamic light scattering (DLS) for size measurement and a Zetasizer for surface charge evaluation. X-ray photoelectron spectroscopy (XPS) demonstrated the various oxidation states of each element (<em>i.e.</em> Ce, F, Zn and O) present in the nanocomposite sample. The BET-specific surface area was determined to be significantly high, approximately 68 m<sup>2</sup>/g, with a narrow pore size distribution and an average pore size of around 36.7 nm. The biocompatibility studies using the MTT assay on human lung adenocarcinoma alveolar basal epithelial cells (A549) demonstrated the more than 80 % cell viability at a concentration 50 μg/ml. These results highlight the potential of mesoporous ZnO embedded CeF<sub>3</sub> nanoparticles as an effective platform for enhanced X-ray PDT.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107918"},"PeriodicalIF":3.4,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Synthesis of manganese oxides with defects for MO degradation 含缺陷氧化锰的合成及其对MO的降解作用

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-03-29 DOI: 10.1016/j.solidstatesciences.2025.107919

Ahlem Ismail , Souad Djerad , Ahmed Haddad , Safia Alleg , Maryam Ebrahimi

{"title":"Synthesis of manganese oxides with defects for MO degradation","authors":"Ahlem Ismail , Souad Djerad , Ahmed Haddad , Safia Alleg , Maryam Ebrahimi","doi":"10.1016/j.solidstatesciences.2025.107919","DOIUrl":"10.1016/j.solidstatesciences.2025.107919","url":null,"abstract":"<div><div>A low-temperature (30 °C) procedure for the synthesis of mixed-valent nanoparticles of manganese oxides is developed through the MnO<sub>4</sub><sup>−</sup> reduction by ascorbic acid (AA) and potassium iodide (KI) with 3 molar ratios (AA: KI = 1:3, 1:1, and 3:1). The samples were dried at 90 °C and calcined at 600 °C. The dried products exhibited low crystallinity with ratios 1:3 and 1:1 and a more developed one with the ratio 3:1. A new tetragonal MnO<sub>2</sub>-type was formed with AA: KI = 1:1 at 90 °C while the calcined samples showed the formation of crystalline manganese oxides with defects. The application of the calcined products in the oxidation of Methyl orange (MO) showed that Mn<sub>0.98</sub>O<sub>2</sub> formed by the ratio AA: KI = 1:3 at 600 °C was more active, registering 92.4 % of degradation after 1 h at 40 °C. The activities of AK11 and AK31 formed by α-MnO<sub>2</sub>, α-Mn<sub>2</sub>O<sub>3,</sub> and Mn<sub>0.965</sub>O followed the content of α-MnO<sub>2</sub> and registered 89.37 and 85.86 %, respectively, under the same conditions. The synthesized samples exhibited antiferromagnetic behavior with coercivity values ranging from 31 to 48.6 Oe and exchange bias values from 67 to 132 Oe for the dried samples at 90 °C and 9 to 66.5 Oe for the calcined samples at 600 °C. The three products formed by nanoparticles reacted through direct oxidation processes via complex redox mechanisms that depended on the nature of manganese oxide, the presence of metal defects and potassium content.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107919"},"PeriodicalIF":3.4,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in distributed transport property thermoelectrics: Enhancing performance through material selection and innovative manufacturing 分布式传输特性热电的进展：通过材料选择和创新制造来提高性能

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-03-27 DOI: 10.1016/j.solidstatesciences.2025.107908

Doug Crane, Lon Bell

{"title":"Advancements in distributed transport property thermoelectrics: Enhancing performance through material selection and innovative manufacturing","authors":"Doug Crane, Lon Bell","doi":"10.1016/j.solidstatesciences.2025.107908","DOIUrl":"10.1016/j.solidstatesciences.2025.107908","url":null,"abstract":"<div><div>Distributed Transport Properties (DTP) play a pivotal role in optimizing the performance of thermoelectric (TE) materials, by optimizing the spatial variation of the magnitude of Seebeck coefficient, electrical resistivity, and thermal conductivity within the TE element. This approach partially offsets the adverse effects of internal Joule heating, creating an optimal temperature profile within the TE element. In this paper, we describe promising results from prototype DTP TE couples we have produced and tested, which exhibit an 8–10K increase in maximum temperature differential, a twofold increase in Coefficient of Performance (COP), and a more than threefold increase in heat pumping capacity at a 70K temperature differential. We also describe the results of our validated model, which predicts the possibility of up to a tenfold improvement in COP and heat pumping capacity at elevated temperature differences.</div><div>This paper introduces the utilization of machine learning to expedite the search for ideal and feasible materials to improve the performance of TE solid state thermal management.</div><div>We also introduce the utilization of additive manufacturing to fabricate DTP elements with a range of compositions, allowing for the creation of TE material systems approaching the theoretical upper limit for COP and heat pumping density. The application of these novel methodologies outlines a pathway toward unlocking the full potential of DTP in thermoelectric materials, aiming to achieve for the first time a maximum temperature difference of 100K in a single stage TE device.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107908"},"PeriodicalIF":3.4,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Doping modification and optoelectronic properties of black phosphorus 黑磷掺杂改性及光电性能研究

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-03-26 DOI: 10.1016/j.solidstatesciences.2025.107916

Zhiwei Jiao , Aolong Sun , Xufang Zhang , Mulan Mu , Haoran Dong

{"title":"Doping modification and optoelectronic properties of black phosphorus","authors":"Zhiwei Jiao , Aolong Sun , Xufang Zhang , Mulan Mu , Haoran Dong","doi":"10.1016/j.solidstatesciences.2025.107916","DOIUrl":"10.1016/j.solidstatesciences.2025.107916","url":null,"abstract":"<div><div>Black phosphorus (BP) has attracted much attention for its excellent electrical and optical properties and its potential in field-effect transistors (FETs). In this work, BP doped with oxygen group elements (sulfur, selenium, and tellurium) was successfully synthesized using the chemical vapor transport method (CVT), and their optoelectronic properties were studied systematically. It is confirmed by X-ray diffraction (XRD) that BP crystals doped with the oxygen group elements exhibited high crystalline quality and yield. Changes in the absorption spectra and surface morphology indicated that doped BP demonstrated significantly enhanced environmental stability compared to undoped BP under prolonged air exposure. Among the doped samples, tellurium (Te)-doped BP showed the highest stability, with a degradation rate of only 9.91 % after 10 days. FETs based on doped BP were successfully fabricated, and their electrical performances were thoroughly evaluated. We found that the hole mobility of BP was dramatically improved by doping, and the selenium (Se)-doped BP possessed the highest hole mobility of 1684.24 cm<sup>2</sup>/V·s.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107916"},"PeriodicalIF":3.4,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cu2V4O11 nanorods: Inherent peroxidase catalytic activity and application in colorimetric detection of hydrogen peroxide and glucose Cu2V4O11纳米棒：固有过氧化物酶催化活性及其在过氧化氢和葡萄糖比色检测中的应用

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-03-26 DOI: 10.1016/j.solidstatesciences.2025.107917

Ping Wang , Xiufang Zhang , Jingtian Chi , Qingbao Du , Shanding Zhou , Boyang Zhang , Xiaofei Yin , Peng Ju

{"title":"Cu2V4O11 nanorods: Inherent peroxidase catalytic activity and application in colorimetric detection of hydrogen peroxide and glucose","authors":"Ping Wang , Xiufang Zhang , Jingtian Chi , Qingbao Du , Shanding Zhou , Boyang Zhang , Xiaofei Yin , Peng Ju","doi":"10.1016/j.solidstatesciences.2025.107917","DOIUrl":"10.1016/j.solidstatesciences.2025.107917","url":null,"abstract":"<div><div>In this work, novel Cu<sub>2</sub>V<sub>4</sub>O<sub>11</sub> nanorods (CVNRs) were meticulously synthesized employing an exquisite one-pot hydrothermal technique, thereby endowed with an inherent peroxidase-like prowess capable of catalyzing the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to produce a blue color reaction in the presence of H<sub>2</sub>O<sub>2</sub>. Kinetic examinations revealed that CVNRs exhibited a 3.36-fold increased affinity for TMB in comparison to the natural enzyme horseradish peroxidase, and the catalytic response derived from CVNRs adhered to a ping-pong mechanism. Free radical trapping experiments corroborated the pivotal role of ·O<sub>2</sub><sup>−</sup> radicals in establishing the dominant oxidant for TMB oxidation. Hence, a sensitive visual assessment platform, grounded in CVNRs, was engineered for the detection of H<sub>2</sub>O<sub>2</sub> and glucose. The limit of detection for H<sub>2</sub>O<sub>2</sub> and glucose were 0.054 μM and 2.24 μM, respectively, and the detection ranges were 1–50 μM and 10–75 μM, respectively. Most notably, the visual platform harbored exceptional stability, selectivity, and anti-interference capabilities. This research not only bestows upon CVNRs an extraordinary capability to discern H<sub>2</sub>O<sub>2</sub> and glucose within practical samples, but also expands the realm of application for CVNRs in the domains of environmental preservation, forensic science and biomedical diagnosis.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107917"},"PeriodicalIF":3.4,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seed-assisted synthesis of ZSM-5 nanozeolites with high catalytic activities for cracking oleic acid to light olefins and light aromatics 种子辅助合成具有高催化活性的ZSM-5纳米沸石，催化油酸裂解为轻烯烃和芳烃

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-03-23 DOI: 10.1016/j.solidstatesciences.2025.107912

Yanlin Wang , Hao Liu , Haoyu Liu , Hong Yuan

{"title":"Seed-assisted synthesis of ZSM-5 nanozeolites with high catalytic activities for cracking oleic acid to light olefins and light aromatics","authors":"Yanlin Wang , Hao Liu , Haoyu Liu , Hong Yuan","doi":"10.1016/j.solidstatesciences.2025.107912","DOIUrl":"10.1016/j.solidstatesciences.2025.107912","url":null,"abstract":"<div><div>A series of nanosized ZSM-5 (SNZSM-5) zeolites has been synthesized by the seed-assisted method using silicalite-1 as seeds. Catalytic cracking of oleic acid to produce light olefins and light aromatics using SNZSM-5 as the catalyst was performed using a laboratory-scale fixed-bed reactor. The effects of the crystallization time and Si/Al molar ratio on the morphology and multilamellar structure of SNZSM-5 were studied to reveal how these properties affect the catalytic performance. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, temperature-programmed desorption of ammonia, and N<sub>2</sub> physisorption and desorption were performed to characterize the morphological features, acidities, and pore structures of the SNZSM-5 nanozeolites. Compared with conventional ZSM-5 zeolite, the SNZSM-5 nanozeolites possessed smaller particle diameters (90–450 nm), and they thus contained more intercrystalline voids. The Brunauer–Emmett–Teller surface areas (211–309 m<sup>2</sup> g<sup>−1</sup>) and mesopore volumes (0.08–0.27 cm<sup>3</sup> g<sup>−1</sup>) were both higher than those of ZSM-5 zeolite. Moreover, owing to the larger specific surface areas of the nanocrystals, more acidic sites can be exposed. Therefore, the SNZSM-5 nanozeolites showed higher catalytic activity and stability than conventional ZSM-5. The catalytic activity could be sustained for up to 35 h. Under the conditions of a reaction temperature of 500 °C, an oleic acid flow rate of 0.04 mL min<sup>−1</sup>, and a nitrogen flow rate of 30 mL min<sup>−1</sup>, the SNZSM-5 nanozeolite prepared with a Si/Al molar ratio of 16 showed the highest catalytic activity, producing up to 67 % yield of light olefins and showing 14.5 % selectivity for light aromatics.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107912"},"PeriodicalIF":3.4,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0