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Optical temperature sensing properties of novel RE3+ (RE = Er, Ho) doped BaLa2Ti3O10 phosphors 新型 RE3+(RE = Er、Ho)掺杂 BaLa2Ti3O10 荧光粉的光学温度传感特性
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-07 DOI: 10.1016/j.materresbull.2024.113183
Zhiyu Zhang , Kai Li , Jianing Liu , Zhenyu Huang , Qing Li , Daiman Zhu
{"title":"Optical temperature sensing properties of novel RE3+ (RE = Er, Ho) doped BaLa2Ti3O10 phosphors","authors":"Zhiyu Zhang ,&nbsp;Kai Li ,&nbsp;Jianing Liu ,&nbsp;Zhenyu Huang ,&nbsp;Qing Li ,&nbsp;Daiman Zhu","doi":"10.1016/j.materresbull.2024.113183","DOIUrl":"10.1016/j.materresbull.2024.113183","url":null,"abstract":"<div><div>A novel luminescent material of BaLa<sub>2</sub>Ti<sub>3</sub>O<sub>10</sub>:RE<sup>3+</sup> was synthesized by the high-temperature solid phase method, with a typical layered structure belonging to a special crystal system. Under the excitation of 980 nm, BaLa<sub>2</sub>Ti<sub>3</sub>O<sub>10</sub>:4 %Er<sup>3+</sup> exhibits characteristic emissions centered at 531 nm, 551 nm and 668 nm. It is noteworthy that the color of BaLa<sub>2</sub>Ti<sub>3</sub>O<sub>10</sub>:3 %Ho<sup>3+</sup> shows a strong green emission at 551 nm and a weak red emission near 664 nm, also represents adjustable yellow-green light with the change of 980 nm laser pumped powers. The optical temperature sensing properties were checked by employing different strategies, relating to the thermally-coupled-levels (TCLs) and nonthermally-coupled-levels (NTCLs). The results show that the maximum relative sensitivity of TCLs based on BaLa<sub>2</sub>Ti<sub>3</sub>O<sub>10</sub>:Er<sup>3+</sup> is 0.68 % K<sup>−1</sup> (305 K). Similarly, the maximum sensitivity of TCLs is 0.89 % K<sup>−1</sup> (313 K) in BaLa<sub>2</sub>Ti<sub>3</sub>O<sub>10</sub>:Ho<sup>3+</sup>, which performs well from 313 K to 513 K. It has been found the samples using FIRs of TCLs can produce higher absolute (S<sub>a</sub>) and relative (S<sub>r</sub>) sensitivities compared with those using Fluorescence Intensity Ratios (FIRs) of NTCLs. The multiple FIRs also achieved superior levels of temperature resolution and repeatability in all cases. Generally, this work provides favorable candidates for the temperature sensors.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"183 ","pages":"Article 113183"},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluating the effect of A- and B-site cobalt doping on the structural, morphological, dielectric, and non-ohmic properties of CaCu3Ti4O12 ceramics prepared by the hydrothermal method 评估 A 位和 B 位钴掺杂对水热法制备的 CaCu3Ti4O12 陶瓷的结构、形态、介电和非欧姆特性的影响
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-06 DOI: 10.1016/j.materresbull.2024.113182
El Houcine Lahrar , Hafida Essaoudi
{"title":"Evaluating the effect of A- and B-site cobalt doping on the structural, morphological, dielectric, and non-ohmic properties of CaCu3Ti4O12 ceramics prepared by the hydrothermal method","authors":"El Houcine Lahrar ,&nbsp;Hafida Essaoudi","doi":"10.1016/j.materresbull.2024.113182","DOIUrl":"10.1016/j.materresbull.2024.113182","url":null,"abstract":"<div><div>CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> (CCTO), CaCu<sub>3-x</sub>Co<sub>x</sub>Ti<sub>4</sub>O<sub>12</sub> (CCC<sub>x</sub>TO) and CaCu<sub>3</sub>Ti<sub>4-x</sub>Co<sub>x</sub>O<sub>12</sub> (CCTC<sub>x</sub>O) ceramics with <em>x</em> = 0.1 were synthesized by the hydrothermal process at 200 °C for 24 h. The influence of cobalt substitution on the copper and titanium sites in CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> on the structural, morphological, and physical properties was investigated. It was shown through the analysis of X-ray diffractograms of CCTO, CCC<sub>x</sub>TO, and CCTC<sub>x</sub>O compounds that they crystallized in a pure perovskite structure without the presence of secondary phases. The refinement of the spectra using the Rietveld method showed an efficient formation of the crystalline phase of the cubic structure (Im<span><math><mover><mn>3</mn><mo>¯</mo></mover></math></span>), which remains unchanged, with an increase in the unit cell due to the substitution of Co<sup>2+</sup>/Co<sup>3+</sup> in the Cu<sup>2+</sup> and Ti<sup>4+</sup> sites of the CCTO ceramic. Raman spectroscopy was used as a complementary characterization method to XRD in order to detect vibrational bands and highlight any changes in the crystal lattice. SEM results showed that cobalt insertion increased the average grain size. The dielectric properties were studied by complex impedance spectroscopy in a frequency range from 1 kHz to 1 MHz at different temperatures, where the insertion of cobalt in the Cu<sup>2+</sup> and Ti<sup>4+</sup> sites has a significant effect on the permittivity value (ε<sub>r</sub>) and dielectric losses (tanδ). The non-ohmic characteristics showed that the change in grain size due to cobalt incorporation is beneficial to improving the breakdown strength (E<sub>b</sub>) and nonlinear coefficient (α), which can be attributed to the grain boundary properties of the Internal Barrier Layer Capacitor (IBLC) model and the behavior of the Schottky barrier.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113182"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel RuO₂@ZnO-Alginate-Halloysite composite for the effective degradation of Eosin Yellow dye and Ciprofloxacin drug 一种有效降解曙红染料和环丙沙星药物的新型 RuO₂@ZnO-Alginate-Halloysite 复合材料
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-06 DOI: 10.1016/j.materresbull.2024.113178
W. Albuquerque , Pollyana Trigueiro , Benvinda V. Silva , L. Neves , Luciano C. Almeida , Ramón R. Peña-Garcia
{"title":"A novel RuO₂@ZnO-Alginate-Halloysite composite for the effective degradation of Eosin Yellow dye and Ciprofloxacin drug","authors":"W. Albuquerque ,&nbsp;Pollyana Trigueiro ,&nbsp;Benvinda V. Silva ,&nbsp;L. Neves ,&nbsp;Luciano C. Almeida ,&nbsp;Ramón R. Peña-Garcia","doi":"10.1016/j.materresbull.2024.113178","DOIUrl":"10.1016/j.materresbull.2024.113178","url":null,"abstract":"<div><div>This research explores the synthesis and application of a novel RuO₂@ZnO-Alginate-Halloysite composite to effectively mitigate Eosin Yellow (EY) and Ciprofloxacin (CIP). The composite exhibited a predominant zinc oxide (ZnO) phase with added ruthenium oxide (RuO₂), alginate, and halloysite components, confirmed through X-ray diffractogram (XRD), Raman, and Fourier Transform Infrared Spectroscopy (FTIR). The addition of RuO₂ did not alter the crystal structure significantly. Still, it impacted the optical properties, with the band gap energies ranging from 3.281 to 3.252 eV, indicating a redshift associated with increased RuO₂ concentration. The composites were tested for EY and CIP photocatalytic degradation under UV light. The composites containing 2 and 3 % of RuO<sub>2</sub> presented impressive photocatalytic performance, achieving up to 82.53 % degradation of CIP and 68.68 % of EY under UV irradiation respectively, highlighting its potential as a robust solution for environmental remediation. The study employed a series of scavenger tests to identify the primary reactive species involved in the photocatalytic degradation of ciprofloxacin drug and eosin yellow dye. The introduction of benzoquinone led to a significant decrease in photocatalytic activity, indicating that superoxide (•O₂⁻) and hydroxyl radicals (•OH) are the dominant species in the photocatalytic degradation of CIP and EY, respectively. The synergistic effects of these reactive species contribute significantly to the photocatalytic performance of the composite material. Finally, the composites showed good recyclability, maintaining substantial degradation performance over multiple cycles. The significance of this study is underscored by the urgent need to find effective methods for removing hazardous compounds from wastewater, a growing concern due to their harmful impact on aquatic ecosystems and human health.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113178"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advancement in the thermoelectric performance of bulk SnSe: GGA+U approach for band gap calculation and strain induced thermal conductivity 体SnSe热电性能的进步:带隙计算和应变诱导热导率的 GGA+U 方法
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-06 DOI: 10.1016/j.materresbull.2024.113181
Hashir P , Parvathy T , Aadil Fayaz Wani , Kulwinder Kaur , P․P Pradyumnan
{"title":"Advancement in the thermoelectric performance of bulk SnSe: GGA+U approach for band gap calculation and strain induced thermal conductivity","authors":"Hashir P ,&nbsp;Parvathy T ,&nbsp;Aadil Fayaz Wani ,&nbsp;Kulwinder Kaur ,&nbsp;P․P Pradyumnan","doi":"10.1016/j.materresbull.2024.113181","DOIUrl":"10.1016/j.materresbull.2024.113181","url":null,"abstract":"<div><div>The utilization of thermoelectric technology for harnessing electricity from waste heat has received considerable interest in recent years. Nevertheless, it is essential to develop high-performance thermoelectric materials that exhibit outstanding conversion efficiency to satisfy the world's energy needs. Density Functional Theory (DFT) techniques have gained wide spread recognition as computational simulation methods for determining electronic properties within materials science. The Boltzmann transport equation, used in conjunction with DFT, serves as a valuable tool for predicting the thermoelectric characteristics of various materials. In this investigation, we conducted a comprehensive analysis of the thermoelectric properties of SnSe using the Quantum Espresso software. Generalized gradient approximations were used as the exchange-correlation functional, which approximates the exchange and correlation energies between electrons in many-body problems. The investigation of core electrons employed ultrasoft pseudopotentials. Additionally, the Hubbard correction tool was applied for the final calculation of the band gap. The optimized structure used for the investigation of the thermoelectric properties of bulk SnSe was supported by the BoltzTraP code. Thermal conductivity studies were conducted using Slack's equation, which incorporates both elastic and lattice characteristics. The examination focused on assessing the impact of changes in lattice strain on lattice thermal conductivity. Notably, a significant alteration in the thermoelectric figure of merit was observed due to the applied lattice strain.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113181"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Li7P3S11 double-layer electrolyte for silicon-based all-solid-state batteries: Interface SiS2-doping 用于硅基全固态电池的 Li7P3S11 双层电解质:界面掺杂SiS2
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-06 DOI: 10.1016/j.materresbull.2024.113179
Nantao Chen, Huiyao Li, Youlan Zou, Zhuoran Ao, Peiguang Li, Yinan Lao, Yu Wan
{"title":"Li7P3S11 double-layer electrolyte for silicon-based all-solid-state batteries: Interface SiS2-doping","authors":"Nantao Chen,&nbsp;Huiyao Li,&nbsp;Youlan Zou,&nbsp;Zhuoran Ao,&nbsp;Peiguang Li,&nbsp;Yinan Lao,&nbsp;Yu Wan","doi":"10.1016/j.materresbull.2024.113179","DOIUrl":"10.1016/j.materresbull.2024.113179","url":null,"abstract":"<div><div>Sulfide solid electrolytes is indispensable for developing all-solid-state batteries with Si-based anode for its superior ionic conductivity and excellent mechanical ductility. However, the unfriendly interface between sulfide and silicon still leads to poor cycling performance. Herein, we report a SiS<sub>2</sub>-doping Li<sub>7</sub>P<sub>3</sub>S<sub>11</sub> (LPS-<em>x</em>Si) membrane sandwiched between Li<sub>7</sub>P<sub>3</sub>S<sub>11</sub> electrolyte and Si electrode to form double-layer sulfide electrolyte (LPS-<em>x</em>Si|LPS). LPS-<em>x</em>Si|LPS double-layer contacts well with Si anode and forms Li-Si alloys at the interface to eliminate the adverse side reactions and promote the Li<sup>+</sup> transmission of the interface. The LPS-2Si|LPS possesses the highest ionic conductivity of 5.4 × 10<sup>−4</sup> S cm<sup>−1</sup> at 30 °C. LiIn | LPS-2Si|LPS | LiIn cell works steadily for more than 1000 h at 30 ℃ with 0.1 mA cm<sup>−2</sup>. The assembled 99 wt.% Si | LPS-2Si|LPS | LiIn cell exhibits an initial discharge capacity of 2208.7 mAh g<sup>−1</sup> and remains 339.5 mAh g<sup>−1</sup> after 100 cycles.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113179"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical behavior of tantalum ion in LiF-NaF-K2TaF7 molten salt system 钽离子在 LiF-NaF-K2TaF7 熔盐体系中的电化学行为
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-06 DOI: 10.1016/j.materresbull.2024.113180
Junyi Tan, Bo Jing, Qiuju Li, Cong Liang, Xiao Guo
{"title":"Electrochemical behavior of tantalum ion in LiF-NaF-K2TaF7 molten salt system","authors":"Junyi Tan,&nbsp;Bo Jing,&nbsp;Qiuju Li,&nbsp;Cong Liang,&nbsp;Xiao Guo","doi":"10.1016/j.materresbull.2024.113180","DOIUrl":"10.1016/j.materresbull.2024.113180","url":null,"abstract":"<div><div>It is of great significance to clarify the electrochemical behavior of Ta<sup>5+</sup> in LiF-NaF-K<sub>2</sub>TaF<sub>7</sub> molten salt systems for the preparation of tantalum metal by molten salt electrodeposition. The aim of this work was to explore the reaction steps and behavior of the reduction of metal Ta from Ta<sup>5+</sup> in fluorine molten salt by electrochemical method. The cyclic voltammetry, square wave voltammetry, chronopotentiometry were used to determine the reduction steps of Ta<sup>5+</sup>. The results showed that there were two reduction steps which the first reduction step R<sub>1</sub> was <span><math><mrow><msubsup><mtext>TaF</mtext><mn>7</mn><mrow><mn>2</mn><mo>−</mo></mrow></msubsup><mo>+</mo><mn>2</mn><msup><mrow><mi>e</mi></mrow><mo>−</mo></msup><mi>⇌</mi><mtext>Ta</mtext><msub><mi>F</mi><mn>3</mn></msub><mo>+</mo><mn>4</mn><msup><mrow><mi>F</mi></mrow><mo>−</mo></msup></mrow></math></span> and the second reduction step R<sub>2</sub> was <span><math><mrow><mtext>Ta</mtext><msub><mi>F</mi><mn>3</mn></msub><mo>+</mo><mn>3</mn><msup><mrow><mi>e</mi></mrow><mo>−</mo></msup><mo>→</mo><mtext>Ta</mtext><mo>+</mo><mn>3</mn><msup><mrow><mi>F</mi></mrow><mo>−</mo></msup></mrow></math></span>. SEM, XRD and EDS results showed that the reduction product of Ta<sup>5+</sup> in molten salt is Ta and the tantalum atom was selectively deposited and grew on the (200) crystal plane in priority.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113180"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SnS2/ZIF-67 nanocomposite: A novel bifunctional, highly efficient, and reusable photocatalyst for enhanced visible-light-assisted biodiesel production and degradation of tinidazole SnS2/ZIF-67 纳米复合材料:一种新型双功能、高效、可重复使用的光催化剂,用于增强可见光辅助生物柴油的生产和替硝唑的降解
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-05 DOI: 10.1016/j.materresbull.2024.113177
Vishal Gadore, Soumya Ranjan Mishra, Md. Ahmaruzzaman
{"title":"SnS2/ZIF-67 nanocomposite: A novel bifunctional, highly efficient, and reusable photocatalyst for enhanced visible-light-assisted biodiesel production and degradation of tinidazole","authors":"Vishal Gadore,&nbsp;Soumya Ranjan Mishra,&nbsp;Md. Ahmaruzzaman","doi":"10.1016/j.materresbull.2024.113177","DOIUrl":"10.1016/j.materresbull.2024.113177","url":null,"abstract":"<div><div>Herein, a novel bifunctional, highly efficient and reusable visible-light active SnS<sub>2</sub>/ZIF-67 nanocomposite was fabricated for improved photodegradation of tinidazole (TDZ) and photocatalytic biodiesel production from soyabean oil. An improved photocatalytic performance was ascribed to the enhanced separation of charges and narrow-bandgap energy of the photocatalyst by synergistic- interaction between SnS<sub>2</sub> and ZIF-67. Within 60 min of irradiation, 96.31± 1.62 % of 15 ppm TDZ could be removed by 0.3 mM H<sub>2</sub>O<sub>2</sub>, 0.4 g/L of prepared photocatalyst under mild-conditions. The appraisal of photocatalytic activity of SnS<sub>2</sub>/ZIF-67 nanocomposite for photocatalytic degradation of TDZ under actual wastewater conditions was studied by introducing various co-existing ions and water matrices. The SnS<sub>2</sub>/ZIF-67 photocatalyst showed biodiesel yield of 91.25 ± 1.58 % at photocatalyst loading of 3 wt% and methanol-to-oil ratio of 10:1 within 50 min of light-irradiation. The current research highlighted the potential of metal-sulphides for water remediation and biodiesel production under light-irradiation.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"183 ","pages":"Article 113177"},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interfacial polarization of different MnO2 crystal anchored on Ti3AlC2 to enhance the microwave absorption 锚定在 Ti3AlC2 上的不同 MnO2 晶体的界面极化以增强微波吸收
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-05 DOI: 10.1016/j.materresbull.2024.113176
Zhouhao Peng , Zitong Wang , Chenglong Lei
{"title":"Interfacial polarization of different MnO2 crystal anchored on Ti3AlC2 to enhance the microwave absorption","authors":"Zhouhao Peng ,&nbsp;Zitong Wang ,&nbsp;Chenglong Lei","doi":"10.1016/j.materresbull.2024.113176","DOIUrl":"10.1016/j.materresbull.2024.113176","url":null,"abstract":"<div><div>Hierarchical MAX phase materials constructed with different MnO<sub>2</sub> crystal were designed for microwave absorbers. Different MnO<sub>2</sub> crystal loaded on Ti<sub>3</sub>AlC<sub>2</sub> had an abundant and differentiated interfaces. Compactly loaded on the surface of Ti<sub>3</sub>AlC<sub>2</sub>, α-MnO<sub>2</sub>/β-MnO<sub>2</sub> was a nanorod and δ-MnO<sub>2</sub> was a flower, but ε-MnO<sub>2</sub> was spherical separating from the Ti<sub>3</sub>AlC<sub>2</sub>. Relying on the synergistic effects of the interfacial and defect dipole polarizations, the optimal RL of Ti<sub>3</sub>AlC<sub>2</sub>@α-MnO<sub>2</sub> and Ti<sub>3</sub>AlC<sub>2</sub>@β-MnO<sub>2</sub> hybrids were -46.5 dB at 3.6 mm and -44 dB at 2.7 mm, respectively. The RL of Ti<sub>3</sub>AlC<sub>2</sub>@δ-MnO<sub>2</sub> hybrid was regulated by the matching thickness (-46.8 dB at 6.1 mm and -20 dB at 2 mm) and the broad EAB is 4.84 GHz. However, the RL of Ti<sub>3</sub>AlC<sub>2</sub>@ε-MnO<sub>2</sub> hybrid cannot reach -10 dB within the thickness of 1.0–5.0 mm, demonstrating the worst attenuation performance. This work offers an opportunity to elucidate the relationship between heterogeneous interface and microwave absorption.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113176"},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrical response and microstructure development in zinc oxide films sprayed from ethanolic solutions of different salts 不同盐的乙醇溶液喷涂的氧化锌薄膜的电反应和微观结构发展
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-04 DOI: 10.1016/j.materresbull.2024.113174
L.A. Ramajo , D. Smirnoff , F. Schipani , R. Martín , E. Villegas , M. Sousa Góes , F. Martín , R. Parra
{"title":"Electrical response and microstructure development in zinc oxide films sprayed from ethanolic solutions of different salts","authors":"L.A. Ramajo ,&nbsp;D. Smirnoff ,&nbsp;F. Schipani ,&nbsp;R. Martín ,&nbsp;E. Villegas ,&nbsp;M. Sousa Góes ,&nbsp;F. Martín ,&nbsp;R. Parra","doi":"10.1016/j.materresbull.2024.113174","DOIUrl":"10.1016/j.materresbull.2024.113174","url":null,"abstract":"<div><div>Zinc oxide thin films were grown by spray-pyrolysis on glass substrates from ethanolic solutions of zinc nitrate, zinc chloride and zinc acetate. Different microstructures were observed in the films prepared with the three salts used, which showed significant differences with respect to films prepared from aqueous solutions of the same salts. Polyethyleneglycol was also used as a pore-generating agent in order to modify the microstructure of denser films increasing the degree of porosity. The electrical response of the films at room temperature was evaluated under 365 nm ultraviolet light, and in the presence of hydrogen, separately. The microstructures developed in ZnO films by using different zinc salts is correlated with the measured electrical properties.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113174"},"PeriodicalIF":5.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic effect of NASICON Na3V2(PO4)2F3 and 2D MXene for high-performance symmetric Sodium-ion batteries NASICON Na3V2(PO4)2F3 和二维 MXene 对高性能对称钠离子电池的协同效应
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2024-11-02 DOI: 10.1016/j.materresbull.2024.113173
Buzaina Moossa , Jeffin James Abraham , Abdul Moiz Ahmed , Ramazan Kahraman , Siham Al-Qaradawi , R.A. Shakoor
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