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Hectoborides: Crystal structure of NdB65 and ThB60
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2025-01-10 DOI: 10.1016/j.solidstatesciences.2025.107826
Gerda Rogl , Vilma Bursikova , Jiri Bursik , Gerald Giester , Henri Noel , Peter Rogl
{"title":"Hectoborides: Crystal structure of NdB65 and ThB60","authors":"Gerda Rogl ,&nbsp;Vilma Bursikova ,&nbsp;Jiri Bursik ,&nbsp;Gerald Giester ,&nbsp;Henri Noel ,&nbsp;Peter Rogl","doi":"10.1016/j.solidstatesciences.2025.107826","DOIUrl":"10.1016/j.solidstatesciences.2025.107826","url":null,"abstract":"<div><div>The crystal structures of the \"hectoborides\" NdB<sub>65</sub> and ThB<sub>60</sub> have been elucidated from single crystal X-ray structure determination supported by TEM-SAED analyses. Both compounds crystallize in a face-centred cubic lattice with space group <em>Fm</em><span><math><mrow><mover><mn>3</mn><mo>‾</mo></mover></mrow></math></span><em>c</em> (No. 226) (<em>a</em><sub>NdB65</sub> = 2.35385(4) nm, R<sub>F</sub> = 0.0491; <em>a</em><sub>ThB60</sub> = 2.35170(5) nm, R<sub>F</sub> = 0.0489) isotypic with the aristo-type of hectoborides, namely YB<sub>66</sub>. With respect to the structure type of YB<sub>66</sub> in its original version by Richards and Kaspar [2], we observe for both compounds, NdB<sub>65</sub> and ThB<sub>60</sub>, a split position (total occupancies ˜0.5) for the metal atoms in site 48<em>f</em> as well as a second metal atom position in site 8<em>a</em> at a reduced occupancy; furthermore, we only arrive at seven B-sites 192<em>j</em> and 5 B-sites 96<em>i</em>, but did not find a B-atom (B13) in site 64<em>g</em> (x = 0.23, x, x). In contrast to the earlier structure determination of ThB<sub>66</sub>(O) [11] our WDX analysis did not present any hints for oxygen contamination, therefore site 8<em>a</em> (¼,¼,¼) hosts a Th atom at low occupancy of 0.12(1) Th instead. Similarly, the 8<em>a</em> site is also partially occupied by 0.04(1) Nd in NdB<sub>65</sub>. Whereas the present investigation removes all doubts on the formation of NdB<sub>65</sub> (YB<sub>66</sub>-type), our analysis did not reveal the formation of isotypic \"PrB<sub>˜66</sub>\". On the basis of our SEM data, revised phase relations for the three systems Nd-B, Pr-B and Th-B have been designed for the boron-rich part (&gt;85 at.% B).</div><div>Whereas at room temperature hardness of ThB<sub>60</sub> (23.8 GPa) and for NdB<sub>65</sub> (24.3 GPa) fit well among hardness data for the corresponding rare earths hectoborides, the by-product material ThB<sub>99</sub> (βB-type) with 42 GPa is a superhard material.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"162 ","pages":"Article 107826"},"PeriodicalIF":3.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-assembly of polyoxometalate-based metal-organic framework with trefoil sign structural feature as efficient anode for lithium ion batteries
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2025-01-01 DOI: 10.1016/j.solidstatesciences.2024.107774
Lizhou Wu , Guanghui Yuan , Fangxiong Gao , Xin Qiang , Junfeng Hui , Bin Liu
{"title":"Self-assembly of polyoxometalate-based metal-organic framework with trefoil sign structural feature as efficient anode for lithium ion batteries","authors":"Lizhou Wu ,&nbsp;Guanghui Yuan ,&nbsp;Fangxiong Gao ,&nbsp;Xin Qiang ,&nbsp;Junfeng Hui ,&nbsp;Bin Liu","doi":"10.1016/j.solidstatesciences.2024.107774","DOIUrl":"10.1016/j.solidstatesciences.2024.107774","url":null,"abstract":"<div><div>To extend the practical applications of polyoxometalates (POMs) based metal–organic frameworks (POMOFs) in the most cut-ting-edge (lithium ion batteries) LIBs, a new crystalline POMOFs, [Ag<sub>6</sub>(H<sub>2</sub>trz)<sub>6</sub>]·[H<sub>4</sub>SiW<sub>12</sub>O<sub>40</sub>]·6H<sub>2</sub>O (SiW<sub>12</sub>-Ag-trz), was successfully synthesized and well characterized in the work. Crystal analysis reveals that Keggin-typed POMs [H<sub>4</sub>SiW<sub>12</sub>O<sub>40</sub>] (SiW<sub>12</sub>) are inserted into the Ag-trz helical chain to construct 3D POMOFs with open pore channels with trefoil sign structural feature, in which SiW<sub>12</sub> polyoxoanion exhibiting the most diverse coordination modes in the reported crystalline POMOFs, to the best our knowledge. Because the pore channels facilitate the storage and release of lithium ions, and the SiW<sub>12</sub> polyoxoanion growing on the framework serves as an excellent electron sponge, crystalline SiW<sub>12</sub>-Ag-trz as an anode material for lithium-ion batteries (LIBs) exhibits highly reversible capacity and rate capability. Moreover, to illustrate the lithium storage, the impedance spectra and cyclic voltammetry (CV) with different scan rates during the first and 50th charge process were studied in details.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107774"},"PeriodicalIF":3.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147208","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
Enhanced thermoelectric properties in Bi2Sr2-xBaxCo2Oy via doping and texturing for integration in more efficient thermoelectric generators
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2025-01-01 DOI: 10.1016/j.solidstatesciences.2024.107772
Pınar Özkurt , M.A. Madre , Berdan Özkurt , M.A. Torres , A. Sotelo
{"title":"Enhanced thermoelectric properties in Bi2Sr2-xBaxCo2Oy via doping and texturing for integration in more efficient thermoelectric generators","authors":"Pınar Özkurt ,&nbsp;M.A. Madre ,&nbsp;Berdan Özkurt ,&nbsp;M.A. Torres ,&nbsp;A. Sotelo","doi":"10.1016/j.solidstatesciences.2024.107772","DOIUrl":"10.1016/j.solidstatesciences.2024.107772","url":null,"abstract":"<div><div>Bi<sub>2</sub>Sr<sub>2-x</sub>Ba<sub>x</sub>Co<sub>2</sub>O<sub>y</sub> (0 ≤ x ≤ 0.15) thermoelectric samples have been sintered, and textured through the laser floating zone process using a Nd:YAG laser. Powder XRD studies showed that the thermoelectric phase is the major one in all cases, with higher amount of secondary phases in the textured ones due to their incongruent melting. Microstructural characterization revealed a drastic microstructural modification in the textured samples, when compared to the sintered ones, producing much larger and well oriented grains along the growth direction. These characteristics led to lower electrical resistivity in textured samples, reaching the minimum at 650 °C (14.8 mΩ cm) in 0.125Ba-doped samples, which is lower than those typically reported in this system. On the other hand, no significant variation in Seebeck coefficient has been found between the samples. This behaviour is associated to the isovalent doping which does not modify the charge carrier concentration in the material, and the highest values at 650 °C (166 μV/K) are in the order of the reported in the literature. As a consequence, power factor values are mainly driven by the electrical resistivity values, leading to the highest values at 650 °C in 0.125Ba-doped textured samples (0.19 mW/K<sup>2</sup>m) due to their lowest resistivity. These values are higher than the reported for textured materials and in the order of the best reported for this compound in bulk form. All these properties, together with the possibility of the direct integration of these compounds in thermoelectric modules, make them very attractive for practical applications ensuring access to affordable, reliable, and sustainable energy for all.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107772"},"PeriodicalIF":3.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147207","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
Efficient photocatalytic elimination of antibiotics over metal-free CNx/PANI/graphene sponge system 无金属CNx/聚苯胺/石墨烯海绵系统的高效光催化消除抗生素
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2024-11-29 DOI: 10.1016/j.solidstatesciences.2024.107781
Beibei Zhu , Jie Zhou , Lubin Ni , Guowang Diao
{"title":"Efficient photocatalytic elimination of antibiotics over metal-free CNx/PANI/graphene sponge system","authors":"Beibei Zhu ,&nbsp;Jie Zhou ,&nbsp;Lubin Ni ,&nbsp;Guowang Diao","doi":"10.1016/j.solidstatesciences.2024.107781","DOIUrl":"10.1016/j.solidstatesciences.2024.107781","url":null,"abstract":"<div><div>Purification of antibiotic wastewater has been recognized as one of the most important issues in the environmental community, for which, developing the metal-free photocatalyst system is an environment-friendly and economic-feasible way. Herein, we designed the metal-free C<sub>3</sub>N<sub>x</sub>/PANI photocatalyst wrapped around the graphene sponge (CPG) for coupled antibiotic wastewater adsorption and purification. The properties of CPG and their relation with purification performance were investigated using various characterization techniques and photocatalysis evaluation. As a result, we found that the advanced porous structure of graphene sponge can favor wastewater adsorption and photon utilization efficiency due to the crosslink channels with a higher crosslinking density. Meanwhile, the layered structure of CN<sub>x</sub> effectively facilitates the transfer of charge carriers while the PANI exhibits high-capacity visible light adsorption. Consequently, after optimization, CPG8 exhibited better photocatalytic activity with a sulfamethazine degradability of 10 mg/L within 40 min. The novel approach and new insights obtained in this work give important guidance for designing advanced photocatalytic systems used in wastewater purification.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107781"},"PeriodicalIF":3.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757350","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
Additives in silver paste improve the mechanical and thermal stability of thermoelectric modules composed of n-type half-Heusler and p-type oxide materials 银浆中的添加剂提高了n型半heusler和p型氧化物材料组成的热电模块的机械稳定性和热稳定性
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2024-11-29 DOI: 10.1016/j.solidstatesciences.2024.107780
Ryoji Funahashi , Yoko Matsumura , Hiroyo Murakami , Tomoyuki Urata , Hitomi Ikenishi , Takashi Sekine
{"title":"Additives in silver paste improve the mechanical and thermal stability of thermoelectric modules composed of n-type half-Heusler and p-type oxide materials","authors":"Ryoji Funahashi ,&nbsp;Yoko Matsumura ,&nbsp;Hiroyo Murakami ,&nbsp;Tomoyuki Urata ,&nbsp;Hitomi Ikenishi ,&nbsp;Takashi Sekine","doi":"10.1016/j.solidstatesciences.2024.107780","DOIUrl":"10.1016/j.solidstatesciences.2024.107780","url":null,"abstract":"<div><div>Thermoelectric modules composed of <em>n-</em>type half-Heusler (HH: Ti<sub>0.75</sub>Hf<sub>0.25</sub>NiSn) and <em>p-</em>type oxide (OX: Ca<sub>2.7</sub>Bi<sub>0.3</sub>Co<sub>4</sub>O<sub>9</sub>) materials have been prepared using silver (Ag)-based pastes to form junctions. The maximum power output <em>P</em><sub>max</sub> of the modules depends on the ratio of the cross-sectional area between the HH and the OX materials because of their different electrical and thermal conduction properties. The highest <em>P</em><sub>max</sub> value is obtained 1.7 W for the 16 <em>n</em>- and <em>p</em>-type thermoelectric pairs at the cross-sectional area ratio of <em>n</em>:<em>p</em> = 2:5. The maximum conversion efficiency <em>η</em> <sub>max</sub> is 1.1 % at about 500 K of the temperature difference between the hot and the cold sides of the module. Single-junction thermoelectric devices composed of either HH or OX materials and Ag sheet electrodes were prepared using the Ag paste mixed with silver oxide (Ag<sub>2</sub>O) or OX (same composition as the <em>p-</em>type material) powders, respectively, to compare the electrical resistance and joining strength. The additives in the Ag paste affected the electrical contact resistance and the joining strength at the junction between the thermoelectric materials and the Ag sheets. The increase in electrical contact resistance due to thermal shock was suppressed by the additives for both <em>n-</em> and <em>p-</em>type devices. Although the addition of Ag<sub>2</sub>O powder enhanced the joining strength between the HH material and the Ag sheet before thermal shock, this effect is not clear after thermal shock. Moreover, the additives improve the thermal durability of the HH/OX module against the hot-side temperature above 673 K. The degradation of the module is related to the electrical contact resistance at the junctions.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107780"},"PeriodicalIF":3.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757351","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
Improving the efficiency of polymer solar cells based on chitosan@PVA@rGO composites via gamma-irradiated treatment of rGO nanoparticles 通过伽马辐照处理氧化石墨烯纳米粒子,提高chitosan@PVA@氧化石墨烯复合材料聚合物太阳能电池的效率
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2024-11-27 DOI: 10.1016/j.solidstatesciences.2024.107773
M.A. Sebak , A.K. Aladim , M.M. Mostafa , M. Abdelhamid Shahat
{"title":"Improving the efficiency of polymer solar cells based on chitosan@PVA@rGO composites via gamma-irradiated treatment of rGO nanoparticles","authors":"M.A. Sebak ,&nbsp;A.K. Aladim ,&nbsp;M.M. Mostafa ,&nbsp;M. Abdelhamid Shahat","doi":"10.1016/j.solidstatesciences.2024.107773","DOIUrl":"10.1016/j.solidstatesciences.2024.107773","url":null,"abstract":"<div><div>Polymer solar cells (PSCs) are growing as attractive contenders for renewable energy technologies given their low cost, adaptability, and environmental sustainability, rendering them valuable in combating climate change. Interestingly, this work investigates the augmentation of photon absorption and overall efficiency in low-cost, effective active layers (ALs) via gamma irradiation treatment, thereby raising the number of active absorption sites. For the first time, novel Chitosan@PVA@rGO (CPG) composite sheets were created as AL materials and treated to varied dosages of in-situ gamma irradiation (0, 10, 20, 30, and 40 KGy) to optimize their microstructural and physicochemical characteristics. The processed ALs were subjected to comprehensive tests, which included J–V variable evaluation as well as evaluations of microstructure, porosity, morphology, contact angle, optical characteristics, and electrochemical impedance spectroscopy (EIS). The findings reveal that the composites' surface properties got better gradually as gamma irradiation dosages grew; peak performance was reached at 30 KGy (75.9 % apparent porosity and roughness parameter Ra = 6.22 μm). Extended gamma irradiation resulted in increased DSSC efficiency, which reached 6.85 % after 10 KGy and 7.63 % after 20 KGy. High-energy gamma photons boosted mobility and decreased resistive limits by reducing carrier recombination and facilitating charge carrier movement inside CPG compounds. This increased the longevity and charge transfer efficiency of the solar cell. After 30 KGy alteration, the CPG AL's optimized efficiency of 8.78 % and J<sub>sc</sub> of 20.23 mA/cm<sup>2</sup> indicate a 44.3 % improvement in efficacy over the pristine material. The insertion of oxygen-enriched free radicals into the CPG structure is responsible for the improvement in photovoltaic efficiency because it creates continuous pathways for fast electron transport. This work provides an innovative perspective on the use of heteroatom-doped ALs in PSCs by highlighting the benefits of co-doping and regulated heteroatom species.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107773"},"PeriodicalIF":3.4,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745537","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
H2O2-assisted Bi3NbO7 loaded on porous carbon for enhancing the photocatalytic degradation of tetracycline 多孔碳上负载的 H2O2- 辅助 Bi3NbO7 可提高四环素的光催化降解能力
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2024-11-19 DOI: 10.1016/j.solidstatesciences.2024.107763
Yao Wang , Pengzhan Zhang , Fan Li , Liang Zhang , Bing Xu , Kangkang Wang , Zhixian He , Yuyan Sun , Shengnan Zhang
{"title":"H2O2-assisted Bi3NbO7 loaded on porous carbon for enhancing the photocatalytic degradation of tetracycline","authors":"Yao Wang ,&nbsp;Pengzhan Zhang ,&nbsp;Fan Li ,&nbsp;Liang Zhang ,&nbsp;Bing Xu ,&nbsp;Kangkang Wang ,&nbsp;Zhixian He ,&nbsp;Yuyan Sun ,&nbsp;Shengnan Zhang","doi":"10.1016/j.solidstatesciences.2024.107763","DOIUrl":"10.1016/j.solidstatesciences.2024.107763","url":null,"abstract":"<div><div>Bi<sub>3</sub>NbO<sub>7</sub> loaded on porous carbon (BNO/PC) composite materials has been prepared by the in-suit sol-gel method. The photocatalytic efficacy of the BNO/PC composite has been evaluated by degrading tetracycline (TC) in an environment of visible light and hydrogen peroxide. Moreover, the relevant influencing factors of TC degradation efficiency have been explored through a series of condition optimization experiments. UV–vis DRS and PL tests showed that the loading on porous carbon significantly broadens the visible light response range of the catalyst and improves the separation efficiency of photogenerated carriers. Compared with the bare BNO, the specific surface area and average pore diameter of the BNO/PC composite material increased greatly. The optimal sample of 35 % BNO/PC exhibited outstanding visible light response ability and excellent charge separation efficiency. The “cata + H<sub>2</sub>O<sub>2</sub>+vis” system had the highest photocatalytic activity, with TC degradation reaching 86.9 % after 60 min of visible light illumination. The addition of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) promoted the formation of more powerful active substances. Following this, a mechanism for photocatalytic degradation has been proposed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107763"},"PeriodicalIF":3.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700268","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
Investigation of structural, magnetic, optical and dielectric characteristics of Al-doped MgFe2O4 nanoparticles 掺铝MgFe2O4纳米颗粒的结构、磁性、光学和介电特性研究
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2024-11-19 DOI: 10.1016/j.solidstatesciences.2024.107761
R. Srimathi , N.V.S.S.Seshagiri Rao , A. Merlin , R. Kiruthika , A. Selvaraj , Omar H. Abdelkader , Chandra Sekhar Dash , S. Revathi , Anis Ahamed , Jothi Ramalingam Rajabathar , M. Sundararajan , S. Yuvaraj , L. Rajadurai
{"title":"Investigation of structural, magnetic, optical and dielectric characteristics of Al-doped MgFe2O4 nanoparticles","authors":"R. Srimathi ,&nbsp;N.V.S.S.Seshagiri Rao ,&nbsp;A. Merlin ,&nbsp;R. Kiruthika ,&nbsp;A. Selvaraj ,&nbsp;Omar H. Abdelkader ,&nbsp;Chandra Sekhar Dash ,&nbsp;S. Revathi ,&nbsp;Anis Ahamed ,&nbsp;Jothi Ramalingam Rajabathar ,&nbsp;M. Sundararajan ,&nbsp;S. Yuvaraj ,&nbsp;L. Rajadurai","doi":"10.1016/j.solidstatesciences.2024.107761","DOIUrl":"10.1016/j.solidstatesciences.2024.107761","url":null,"abstract":"<div><div>In this study, MgAlₓFe₂₋ₓO₄ (0 ≤ x ≤ 0.5) nanoparticles were synthesized via the combustion method to investigate the structural, magnetic, optical, and dielectric effects of Al doping on MgFe₂O₄ ferrite. X-ray diffraction (XRD) analysis confirmed the successful formation of the MgFe₂O₄ crystalline phase, with crystallite sizes ranging from 34 to 45 nm. Field emission scanning electron microscopy (FE-SEM) revealed a spherical morphology, and energy-dispersive X-ray spectroscopy (EDX) confirmed the presence of magnesium, iron, oxygen, and the introduced aluminum. Diffuse reflectance spectroscopy measured an optical band gap between 2.03 and 2.13 eV, indicating Al's influence on electronic properties. Dielectric measurements showed that the Al-doped samples exhibited enhanced dielectric constants and AC conductivity compared to the undoped ferrite, making them promising candidates for optoelectronic, photocatalytic, and energy storage applications. These results highlight the potential of Al-doped MgFe₂O₄ nanoparticles in advancing functional materials for data storage and energy-related technologies.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107761"},"PeriodicalIF":3.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745538","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 WO3-GO nanocomposite for hydrogen storage, electrochemical, antibacterial and anticancer applications 用于储氢、电化学、抗菌和抗癌的 WO3-GO 纳米复合材料的合成与表征
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2024-11-19 DOI: 10.1016/j.solidstatesciences.2024.107764
M. Muniyalakshmi , C. Anantha Prabhu , D. Thilaga Sundari , R. Sarika , D. Silambarasan , V. Prasanna Venkatesh
{"title":"Synthesis and characterization of WO3-GO nanocomposite for hydrogen storage, electrochemical, antibacterial and anticancer applications","authors":"M. Muniyalakshmi ,&nbsp;C. Anantha Prabhu ,&nbsp;D. Thilaga Sundari ,&nbsp;R. Sarika ,&nbsp;D. Silambarasan ,&nbsp;V. Prasanna Venkatesh","doi":"10.1016/j.solidstatesciences.2024.107764","DOIUrl":"10.1016/j.solidstatesciences.2024.107764","url":null,"abstract":"<div><div>Tungsten trioxide nanoparticles (WO<sub>3</sub> NPs), Graphene oxide nanosheets (GO NSs), and WO<sub>3</sub>-GO (50 mg and 100 mg) nanocomposites (NCs) were successfully synthesized by using precipitation, modified Hummer's and ultrasonication methods, respectively. Various characterization techniques were used to confirm the formation of individual and composite materials. Hydrogen storage, electrochemical, antibacterial and anticancer properties of the synthesized materials were studied. Formation of the composite was confirmed by XRD, Raman and XPS analyses. Surface area and pore size distribution of WO<sub>3</sub> NPs and WO<sub>3</sub>-GO NC were studied by using BET analysis. Hydrogen storage capacity of WO<sub>3</sub>-GO 50 mg and WO<sub>3</sub>-GO100 mg NCs was found to be 1.05 and 2.08 wt%, respectively. XRD, Raman, elemental and TG analyses were used to examine the adsorption and desorption of hydrogen. WO<sub>3</sub>-GO NCs showed higher specific capacitance as compared to WO<sub>3</sub> NPs. Antibacterial activity against <em>E. coli</em>, <em>S. aureus</em> bacteria and anticancer effect against human breast cancer cells of WO<sub>3</sub> NPs and WO<sub>3</sub>-GO NC were examined. Based on the studies, it is evident that the inclusion of GO enhanced the hydrogen storage, specific capacitance, antibacterial and anticancer activities of the composite.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107764"},"PeriodicalIF":3.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700265","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
Self-assembly of Cucurbit[6]uril-Silicotungstic acid and adsorption properties for cationic dyes 葫芦[6]脲-硅钨酸的自组装及其对阳离子染料的吸附特性
IF 3.4 3区 化学
Solid State Sciences Pub Date : 2024-11-17 DOI: 10.1016/j.solidstatesciences.2024.107760
Liling Zeng, Xianyan Ao, Manli Xu, Yunqian Zhang, Zhu Tao
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