Materials Research Bulletin最新文献_第10页

Activated carbon derived from corncob via hydrothermal carbonization as a promising electrode for supercapacitors 通过水热碳化从玉米芯中提取的活性炭有望成为超级电容器的电极

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-18 DOI: 10.1016/j.materresbull.2024.112991

引用次数: 0

Development of three-dimensional iron-doped cobalt phosphides nanorod arrays coupled on nickel substrate for effective hydrogen and oxygen production 开发在镍基底上耦合的三维铁掺杂磷化钴纳米棒阵列，用于有效制氢制氧

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-18 DOI: 10.1016/j.materresbull.2024.113003

引用次数: 0

Improvement in dielectric properties of polyacrylate copolymers by engineering the interphase region with polymer-grafted reduced graphene oxide 通过对聚合物接枝还原石墨烯氧化物的相间区进行工程改造来改善聚丙烯酸酯共聚物的介电性能

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-15 DOI: 10.1016/j.materresbull.2024.112999

{"title":"Improvement in dielectric properties of polyacrylate copolymers by engineering the interphase region with polymer-grafted reduced graphene oxide","authors":"","doi":"10.1016/j.materresbull.2024.112999","DOIUrl":"10.1016/j.materresbull.2024.112999","url":null,"abstract":"<div>In this study, an innovative interfacial design strategy aimed to investigate the effects of interfacial interactions between the matrix and reduced graphene oxide (rGO) on the dielectric properties of nanocomposites. The polymer matrices with varying comonomer ratios of butyl acrylate and methyl methacrylate were synthesized to deliberately engineer diverse interfacial interactions with polymer-grafted reduced graphene oxide. Through this approach, fine-tuned interfacial interactions between the polymer matrix and polymer-grafted rGO were achieved, which was verified by FE-SEM, DSC, and DMTA analysis. Subsequently, the dielectric properties of the nanocomposites were investigated to elucidate the relationship between interfacial strength and dielectric efficiency. It was found that polymer nanocomposites with enhanced interfacial interactions exhibit higher dielectric permittivity compared to the neat matrix. This enhancement was attributed to the increased charge storage in the interfacial area and improved alignment of polarizable polymer chains in the interphase between the polymer matrix and polymer-grafted rGO.</div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141702575","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

White light generation and modulation using stacked multilayer nanofibres 利用堆叠多层纳米纤维产生和调制白光

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-15 DOI: 10.1016/j.materresbull.2024.112996

{"title":"White light generation and modulation using stacked multilayer nanofibres","authors":"","doi":"10.1016/j.materresbull.2024.112996","DOIUrl":"10.1016/j.materresbull.2024.112996","url":null,"abstract":"<div>In this article, the production of white light from single-leaf extract of the Buxus sempervirens shrub is discussed, followed by its modulation using a lanthanide complex i.e. Eu(DBM)3phen (EDP) dispersed in PVA polymer nanofibres. Luminescent Buxus-semperviren's leaf extract and EDP in PVA nanofibres have been fabricated using the electrospinning technique. The morphological and luminescent properties of fabricated nanofibres were characterized using different techniques. SEM analysis reveals the formation of smooth surfaced and interlinked nanofibres with diameters 136 nm ± 19 nm and 194 ± 29.8 nm for EDP and leaf extract in PVA nanofibres, respectively. Through the UV-visible absorption analysis it was observed that the major absorption of the leaf extract and the EDP in nanofibres lies in the UV-blue regions. The emission spectra presented the red characteristic emission due to 5D0 → 7FJ(0,1,2,3,4) transitions of Eu3+ ions in EDP. The emission spectra of the leaf extract in PVA nanofibres exhibit three emission bands in the red, green and blue regions, giving a white perception. The red colour emission is ascribed to chlorophyll, and the green-blue emission is due to the cinnamic acids on the epidermis layer of the leaf. White light modulation explored by multilayer stacking of EDP nanofibre's layers. The colour parameters like CIE, CCT and Duv were calculated for different configurations.</div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141692995","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

Quaternary piezoelectric ceramics with ultra-high mechanical quality factor 具有超高机械品质因数的四元压电陶瓷

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-09 DOI: 10.1016/j.materresbull.2024.112995

{"title":"Quaternary piezoelectric ceramics with ultra-high mechanical quality factor","authors":"","doi":"10.1016/j.materresbull.2024.112995","DOIUrl":"10.1016/j.materresbull.2024.112995","url":null,"abstract":"<div>The development of piezoelectric ceramics with large piezoelectric coefficient (d33), high Curie temperature (TC) and high mechanical quality factor (Qm) is still a key challenge for practical application for high-power device. Herein, a novel quaternary piezoelectric ceramics of (0.125-x) Pb0.98Sr0.02(Mg1/3Nb2/3)O3–0.445PbTiO3–0.43PbZrO3-xPb(Mn1/3Nb2/3)O3 (abbreviated as xPMnN-PSMN-PZT) were prepared by the solid-state sintering method. The hard dopant PMnN induced the morphotropic phase boundary (MPB) of PSMN-PZT into a tetragonal-rich region. In addition, the XPS and EPR analysis proved the existence of a large amount of oxygen vacancies (<math><msubsup><mi>V</mi><mi>o</mi><mrow><mo>•</mo><mo>•</mo></mrow></msubsup></math>) in PMnN-PSMN-PZT ceramic system. The composition near tetragonal-rich MPB region and the appearance of defect dipoles formed a strong coupling effect on the domain wall motion and leaded to an ultra Qm value. The optimum piezoelectric properties were achieved at x = 9 mol% with d33 = 260 pC/N, Qm = 3880, tanδ = 0.009 and TC = 332 °C. A significant internal bias field (Ebias) of 8.83 kV/cm was also observed in 0.09PMnN-PSMN-PZT ceramics. The origin of this excellent piezoelectric properties was explained by the phase structure, piezoelectric and dielectric analysis. This work demonstrated a rational strategy to obtain ultra Qm value for high-power piezoceramics.</div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141697151","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

Highly stable energy-storage performance of donor-acceptor co-doped TiO2 films 供体-受体共掺杂二氧化钛薄膜的高稳定储能性能

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-09 DOI: 10.1016/j.materresbull.2024.112993

{"title":"Highly stable energy-storage performance of donor-acceptor co-doped TiO2 films","authors":"","doi":"10.1016/j.materresbull.2024.112993","DOIUrl":"10.1016/j.materresbull.2024.112993","url":null,"abstract":"<div>Energy-storage films that remain stable at high temperatures and frequencies are crucial for various applications. In this study, we demonstrated that donor-acceptor co-doped simple oxide TiO2 films, viz. V5+-Cr3+ co-doped TiO2 [(V0.5Cr0.5)xTi1-xO2] films, can exhibit highly stable energy-storage performance. The co-doped TiO2 films exhibited high breakdown strength and polarization owing to the local polarization induced by the V5+-Cr3+ ionic pairs. The energy-storage density of the (V0.5Cr0.5)0.02Ti0.98O2 film was approximately 48.93 J/cm3 at room temperature, which is approximately 195 times higher than that of the pure TiO2 film (0.25 J/cm3). In addition, the (V0.5Cr0.5)0.02Ti0.98O2 film exhibited excellent temperature stability from 303 K to 403 K, frequency stability from 0.5 kHz to 7.5 kHz, and fatigue durability over 107 charge-discharge cycles. The proposed strategy can effectively improve the stable energy-storage performance of lead-free donor-acceptor co-doped TiO2 films, which are in high demand in various applications.</div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613786","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

Measurements of the complex permittivity of low loss ferrites at millimeter wave frequencies 毫米波频率下低损耗铁氧体复介电常数的测量结果

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-09 DOI: 10.1016/j.materresbull.2024.112994

{"title":"Measurements of the complex permittivity of low loss ferrites at millimeter wave frequencies","authors":"","doi":"10.1016/j.materresbull.2024.112994","DOIUrl":"10.1016/j.materresbull.2024.112994","url":null,"abstract":"<div>Significant progress has been achieved in millimeter-wave technologies, enabled by the development of dielectric and magnetic materials operating at such frequencies. Conventional resonance dielectric characterization techniques are not applicable due to small required sample sizes. Measurements of the complex permittivity of spherical samples available from ferrite manufacturers are proposed, performed in metal cavities by employing spherical dielectric resonances. Rigorous analysis of the resonance structure allowed the determination of the diameter of an equivalent spherical enclosure, which negligibly affects the result accuracy but allows to reduce the 2D electromagnetic problem to a 1D one. Measurements have been performed on yttrium-iron- and calcium-vanadium-garnet samples having diameters in the 1.2 - 2.8 mm range at frequencies 25 - 58 GHz. The permittivity of these samples was found to be in the range of 14 to 16 and the dielectric loss tangent in the range of <math><mrow><mn>1.6</mn><mo>×</mo><mrow></mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></math> to <math><mrow><mn>9.6</mn><mo>×</mo><mrow></mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></math>.</div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141624018","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

Co-P-B/Ti foil as an efficient catalyst for hydrogen production from the hydrolysis of NaBH4 solution Co-P-B/Ti 箔作为 NaBH4 溶液水解制氢的高效催化剂

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-07 DOI: 10.1016/j.materresbull.2024.112992

Jiaxin Ma , Yutong Han , Xue Wang , Yan Wang , Ke Zhang , Zhongqiu Cao , Qiuju Sun , Guode Li , Shiwei Wu

{"title":"Co-P-B/Ti foil as an efficient catalyst for hydrogen production from the hydrolysis of NaBH4 solution","authors":"Jiaxin Ma , Yutong Han , Xue Wang , Yan Wang , Ke Zhang , Zhongqiu Cao , Qiuju Sun , Guode Li , Shiwei Wu","doi":"10.1016/j.materresbull.2024.112992","DOIUrl":"https://doi.org/10.1016/j.materresbull.2024.112992","url":null,"abstract":"<div>Sodium borohydride (NaBH4) can hydrolyze to generate hydrogen (H2) with the proper catalysts for the fast-growing hydrogen economy. Developing more highly active, cost-effective and stable catalysts is considered to be a promising strategy. Herein, Co-P-B thin film supported on titanium foil (Co-P-B/Ti foil) was fabricated via chemical deposition at room temperature and applied to catalyze H2 production from hydrolysis NaBH4 solution. The catalytic properties of Co-P-B/Ti foil for NaBH4 hydrolysis were studied by adjusting reducing agent concentration, response time, and depositional pH value. The optimized Co-P-B/Ti foil thin film catalyst showed an enhanced catalytic performance. The highest hydrogen generation rate was obtained to be 5529.7 mL·min-1·g-1, and the apparent activation energy was 48.4 kJ·mol-1, which was superior to most of reported catalysts. One reason might be due to the special morphology, increasing the surface area of the catalyst and providing more active sites on the catalyst surface. Another reason might be the mutual effect of the Co, P and B elements. Moreover, the optimized Co-P-B/Ti foil thin film catalyst displayed good recycling ability toward the hydrolysis of NaBH4 solution after 5 cycles.</div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141593744","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

Hierarchical flower-like ytterbium benzene-1,3,5-tricarboxylate metal organic framework for simultaneous sensitive electrochemical detection of Cd2+, Pb2+ and Cu2+ 用于同时灵敏电化学检测 Cd2+、Pb2+ 和 Cu2+ 的分层花状镱苯-1,3,5-三羧酸金属有机框架

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-07 DOI: 10.1016/j.materresbull.2024.112989

Ji Zhang, Chenguang Yang, Yan Xu

{"title":"Hierarchical flower-like ytterbium benzene-1,3,5-tricarboxylate metal organic framework for simultaneous sensitive electrochemical detection of Cd2+, Pb2+ and Cu2+","authors":"Ji Zhang, Chenguang Yang, Yan Xu","doi":"10.1016/j.materresbull.2024.112989","DOIUrl":"https://doi.org/10.1016/j.materresbull.2024.112989","url":null,"abstract":"<div>Hierarchical electrochemical sensors with specific recognition function have been widely applied for trace amounts detection of metal ions, showing great significance for monitoring environmental quality. Herein, a novel flower-like ytterbium benzene-1,3,5-tricarboxylate metal-organic framework (Yb-MOF-1) was prepared by a one-step solvothermal method, which was then cast on a glassy carbon electrode to construct a sensing platform. Compared to the traditional rod-like Yb-MOF-2 prepared at a lower pH (pH = 4.26), the Yb-MOF-1 assembled from ultrathin nanosheets has a large surface area (462.356 m²/g), showing simultaneous electrochemical detection performance towards Cd2+, Pb2+ and Cu2+ in aqueous solution with detection limits of 9.22, 1.69, 15.15 nM, respectively. The experimental results demonstrate its good anti-interference and repeatability. The reliable practical application of Yb-MOF-1 for Cd2+, Pb2+ and Cu2+ detection in real water samples shows good recovery rates ranging from 95.8 % to 103.5 %, proving the effective strategy in exploring efficient electrochemical sensing materials.</div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141593742","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

Synthesis and photocatalytic activity of zinc-doped copper sulfide with porous nanotubes structures 具有多孔纳米管结构的掺锌硫化铜的合成与光催化活性

IF 5.3 3区材料科学

Materials Research Bulletin Pub Date : 2024-07-05 DOI: 10.1016/j.materresbull.2024.112990

Jinxing Cao, Dunpu Zhang, Hui Zhang

引用次数: 0