Solid State Sciences最新文献

{"title":"Ta2O5 coatings modified with CdS, ZnO, and Dy2O3 particles prepared by plasma electrolytic oxidation of tantalum for the photocatalytic degradation of methyl orange","authors":"Stevan Stojadinović ,&nbsp;Mladen Perković ,&nbsp;Nenad Radić","doi":"10.1016/j.solidstatesciences.2024.107661","DOIUrl":"10.1016/j.solidstatesciences.2024.107661","url":null,"abstract":"<div><p>Ta₂O₅/CdS, Ta₂O₅/ZnO and Ta₂O₅/Dy₂O₃ coatings for application in photocatalytic degradation of methyl orange were prepared by plasma electrolytic oxidation of tantalum in an alkaline electrolyte with different concentrations of CdS, ZnO, and Dy₂O₃ particles up to 2.0 g/L. The coatings were characterized by SEM/EDS, XRD, Raman spectroscopy, DRS and photoluminescence spectroscopy. The morphology, thickness, phase structure and absorption properties of all coatings are almost identical and independent of the content of CdS, ZnO, and Dy₂O₃ embedded in Ta₂O₅ coatings. The orthorhombic and monoclinic phases of Ta₂O₅ are the main constituents of the coatings. Due to the low content of embedded CdS, ZnO, and Dy₂O₃ in Ta₂O₅ coatings, they exhibit high absorption in the middle ultraviolet region, which is characteristic of Ta₂O₅. The photocatalytic activity (PA) of Ta₂O₅/CdS, Ta₂O₅/ZnO and Ta₂O₅/Dy₂O₃ is higher than that of pure Ta₂O₅ and depends on the amount of CdS, ZnO, and Dy₂O₃ in the electrolyte, respectively. The highest PA was observed for coatings formed in an electrolyte containing 0.5 g/L of CdS, ZnO, and Dy₂O₃. The improved PA of Ta₂O₅/CdS, Ta₂O₅/ZnO and Ta₂O₅/Dy₂O₃ compared to Ta₂O₅ is related to the reduction of photogenerated electron/hole recombination. The mechanism of the photogenerated electron/hole transfer process is presented and discussed.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"156 ","pages":"Article 107661"},"PeriodicalIF":3.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141990570","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}

{"title":"MoS2/SnS heterostructure composite for high-performance lithium-ion battery anodes","authors":"Yiwen Guo ,&nbsp;Kun Liu ,&nbsp;Wenlong Liu ,&nbsp;Ning Zhang ,&nbsp;Xiaodong Sun ,&nbsp;Song Li ,&nbsp;Zhongsheng Wen ,&nbsp;Juncai Sun","doi":"10.1016/j.solidstatesciences.2024.107660","DOIUrl":"10.1016/j.solidstatesciences.2024.107660","url":null,"abstract":"<div><p>Layered metal sulfides are potential anode materials for lithium-ion batteries (LIBs) because their unique structure makes them suitable for Li⁺ de-intercalation. As a typical 2D layered material, MoS₂ is a potential anode material for LIBs due to the weak van der Waals forces between the layers, which facilitates the de-intercalation of Li⁺ and supports multiple Li⁺. However, when MoS₂ is used as anodes for LIBs material, rapid capacity decay hinders the application. Coupling two different materials to form a heterogeneous structure is an effective way to solve the above problems. In this work, one-pot hydrothermal method is proposed to construct MoS₂/SnS heterostructure composites. The electrochemical properties are significantly enhanced, which could be attributed to the presence of heterogeneous structures, leading to increase the electrode charge transfer rate and interfacial reaction kinetics. The results show that the discharge capacity of the MoS₂/SnS-1.5 electrode is about 1492.1 mAh/g at 500 mA/g. Furthermore, assembled MoS₂@SnS-1.5||LiCoO₂ full cell displays a high discharge capacity of 226.1 mAh/g after 50 cycles at 500 mA/g. This facile method provides the application value of layered metal sulfides as LIBs anode materials.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"156 ","pages":"Article 107660"},"PeriodicalIF":3.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141997823","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}

{"title":"Surface plasmon resonance (SPR)-enhanced photocatalytic degradation by periodically ordered δ-MnO2 arrays with alkali metals doping","authors":"Han Liu ,&nbsp;Mingsong Zhang ,&nbsp;Xiaoyun Liu ,&nbsp;Zhihao Chai ,&nbsp;Mai Li ,&nbsp;Chunrui Wang ,&nbsp;Jiale Wang","doi":"10.1016/j.solidstatesciences.2024.107659","DOIUrl":"10.1016/j.solidstatesciences.2024.107659","url":null,"abstract":"<div><p>Periodically ordered δ-MnO₂ arrays of different periods have been fabricated by using polystyrene (PS) nanosphere lithography (NSL) combined with following hydrothermal growth. By choosing different precursors, δ-MnO₂ arrays with different alkali metals doping were obtained. It was observed that the K-doped δ-MnO₂ array of 500 nm period exhibited superior photocatalytic degradation performance of methylene blue (MB) under visible light irradiation relative to those of Na- or Mg-doped δ-MnO₂ arrays of 500 nm period, as well as K-doped δ-MnO₂ array of 800 nm period. The best performance of K-doped δ-MnO₂ array of 500 nm period can be firstly attributed to enhanced surface plasmon resonance (SPR) effect caused by alkali metal doping, where K-doped MnO₂ could provide more free electrons than those of Na- or Mg- doped MnO₂. Furthermore, for the nanomaterials with SPR effect the surface plasmon polaritons (SPP) can change the propagation path of incident light to vertical direction after scattering on them. Since the MnO₂ array of 500 nm period possessed the distance between neighbor unites smaller than the wavelength of irradiation light, and thus the scattered light interfered with each other after the incident light was scattered by the MnO₂ unites. Then the electric field (E-field) intensities generated by SPR effect near each MnO₂ unit were elevated due to the interference effect. Therefore, our finding may provide a peculiar way to improve SPR-mediated photocatalytic performance of non-metallic materials by combination of doping and arrays fabrication of particular periods.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"156 ","pages":"Article 107659"},"PeriodicalIF":3.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141998360","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}

{"title":"Effect of substitution of aluminium and neodymium on structural and magnetic properties of yttrium iron garnet studied using 57Fe internal field NMR","authors":"Akash Daniel Georgi ,&nbsp;G. Srinivas Reddy ,&nbsp;K.P. Ramesh ,&nbsp;K.J. Mallikarjunaiah","doi":"10.1016/j.solidstatesciences.2024.107658","DOIUrl":"10.1016/j.solidstatesciences.2024.107658","url":null,"abstract":"<div><p>The structural and magnetic properties of non-magnetic aluminium and magnetic neodymium substituted yttrium iron garnet samples (Y_3-<em>x</em>Al_<em>x</em>Fe₅O₁₂ and Y_3-<em>n</em>Nd_<em>n</em>Fe₅O₁₂) were investigated. Powder samples were synthesized using auto combustion route. The Rietveld refinement analysis of the samples confirmed the presence of the garnet phase and showed presence of minimal impurity phases, specifically perovskite and hematite. Substitution on Y₃Fe₅O₁₂ with Al resulted in a linear decrease in saturation magnetization, while Nd substitution showed a non-linear change. In accordance with this the Internal Field Nuclear Magnetic Resonance (IFNMR) spectrum exhibited a downward shift in peak frequency when Al was substituted, and a significant reduction in intensity with Nd substitution in yttrium iron garnet samples. Aluminium ions take up either tetrahedral or octahedral positions in the lattice, apart from the dodecahedral site, because of their smaller ionic radii. This causes a decrease in the hyperfine field that originates from Fe³⁺ ions in tetrahedral and octahedral sites. On the other hand, neodymium ions occupy dodecahedral sites and are expected not to affect Fe ions. Concurrently, an observable peak shift was not observed in the IFNMR spectrum for Nd substitution. However, Nd substitution introduced strain in the lattice due to their larger ionic radii compared to yttrium, which they replace. This strain causes disorder in tetrahedral and octahedral sites and affects ⁵⁷Fe signal intensity. The magnetic properties observed from VSM analysis is also interpreted in view of observed changes in the ⁵⁷Fe IFNMR spectrum. X-ray Photoelectron spectroscopy (XPS) was employed mainly to explore spin orbit splitting of Fe 2<em>p</em> state in the samples.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"156 ","pages":"Article 107658"},"PeriodicalIF":3.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141985761","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}

{"title":"Synthesis and application of Ag3PO4 photocatalyst modified by g-C3N4 for tetracycline hydrochloride degradation","authors":"Jing Yang,&nbsp;Haixin Yang,&nbsp;Meng Li,&nbsp;Hongxi Zhang,&nbsp;Liang Wei,&nbsp;Xiande Yang","doi":"10.1016/j.solidstatesciences.2024.107654","DOIUrl":"10.1016/j.solidstatesciences.2024.107654","url":null,"abstract":"<div><p>Finding highly efficient photocatalysts has practical significance for antibiotics degradation. In this work, g-C₃N₄ modified Ag₃PO₄ had been prepared via in-situ deposition method. Their photocatalytic activities were investigated through tetracycline hydrochloride (TCH) degradation under visible light. In summary, sample 6 wt% g-C₃N₄/Ag₃PO₄ (6 wt% CN/APO) exhibited a good degradation efficiency (72.1 %) to TCH within 30 min, while pure Ag₃PO₄ and g-C₃N₄ was only 57.4 % and 5.8 %, respectively. Because of the construction of heterojunction structure, 6 wt% CN/APO composite had low fluorescence intensity, high photocurrent density and low resistance, which were helpful for the rapid separation of photogenerated carriers. Therefore, the photocatalytic property of Ag₃PO₄ was obviously enhanced. In addition, sample 6 wt% CN/APO also showed excellent photocatalytic stability, and h⁺ played a main role in TCH degradation. Its possible photocatalytic mechanism was also elucidated.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107654"},"PeriodicalIF":3.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948743","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}

{"title":"Improving the FOM of photodetectors fabricated by Sn-doped CuS nanostructures","authors":"Mehrdad Kavosh ,&nbsp;Farid Jamali-Sheini ,&nbsp;Mohsen Cheraghizade ,&nbsp;Ramin Yousefi","doi":"10.1016/j.solidstatesciences.2024.107653","DOIUrl":"10.1016/j.solidstatesciences.2024.107653","url":null,"abstract":"<div><p>The Sn-doped CuS nanostructures with different Sn-doping concentrations (Sn₁ (5 %), Sn₂ (10 %), and Sn₃ (15 %)) were synthesized by the sonochemical method. Due to the difference in ionic radii between Cu and Sn, the stress in the CuS crystal was increased from 41 × 10⁻⁴ for the undoped sample to 50 × 10⁻⁴ for the Sn₂-doped sample. The absorption of visible light by the doped samples was increased dramatically. The morphology of CuS nanostructures was changed from nanoparticles (NPs) in the undoped CuS to nanoplates in the Sn₂-doped CuS. Finally, the optoelectronic applications of the samples were studied, and it was shown that all the samples responded to the visible light source, and their resistance was decreased due to light radiation. The results indicated that specific detectivity (<em>D*</em>), responsivity (<em>R</em>), and sensitivity (<em>S</em>) as the figure-of-merit (FOM) of the photodetectors were increased from 2.07 × 10⁹ Jones, 0.92 mA W⁻¹, and 1328 % for undoped CuS nanostructures to 65.22 × 10⁹ Jones, 28.27 mA W⁻¹, and 3802 % for the Sn₂-doped CuS nanostructures. The Mott-Schottky (M − S) results indicated that a higher acceptor carrier concentration in the Sn-doped CuS compared to undoped CuS was one of the most critical factors in enhancing the FOM of the photodetectors fabricated with Sn-doped CuS nanostructures.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"156 ","pages":"Article 107653"},"PeriodicalIF":3.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141990697","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}

{"title":"Novel Co-CP/γ-MnO2 composite as a powerful catalyst for C–C Suzuki coupling reaction","authors":"Maryam Mohammadikish,&nbsp;Mahsa Niakan,&nbsp;Banafshe Gholami","doi":"10.1016/j.solidstatesciences.2024.107656","DOIUrl":"10.1016/j.solidstatesciences.2024.107656","url":null,"abstract":"<div><p>Developing low-cost catalytic systems for C–C coupling reactions is desirable but challenging. Herein, a coordination polymer (Co-CP) was fabricated on the surface of γ-MnO₂ through a layer-by-layer growth technique to obtain a cost-effective heterogeneous catalyst. Various physicochemical analyses endorsed the presence of both components, γ-MnO₂ and Co-CP in the prepared composite. This compound demonstrated a remarkable catalytic performance (in some cases more than 99 %) in the Suzuki coupling reaction of a wide range of arylboronic acids and aryl bromides in water:DMF medium. In particular, the prepared catalyst was efficient and maintained its activity after five consecutive utilizations. From the viewpoint of economics, the present catalytic system gathers noticeable advantages, like the use of earth-abundant and cheap metals (Co and Mn).</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"156 ","pages":"Article 107656"},"PeriodicalIF":3.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141978447","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}

{"title":"Boosting supercapacitor performance: Sb2O3 nano-blocks on rGO sheets for enhanced energy storage","authors":"Maryam E. Abo Elnaga ,&nbsp;Aya Mohamed Abuelftooh ,&nbsp;Fatma A. Taher ,&nbsp;Saad G. Mohamed","doi":"10.1016/j.solidstatesciences.2024.107655","DOIUrl":"10.1016/j.solidstatesciences.2024.107655","url":null,"abstract":"<div><p>In this work, the synthesis of antimony(III) oxide (Sb₂O₃) nanoblocks/reduced graphene oxide (rGO) sheets was obtained by a straightforward hydrothermal method. Sb₂O₃/rGO composites were prepared with various ratios of rGO. The results indicated that the Sb₂O₃/15 mg rGO composite had remarkable electrochemical performance. It displayed a good electrochemical efficiency, with a high specific capacitance of 151.89 F g⁻¹ at 1 A g⁻¹. Furthermore, it demonstrated a significant cycling stability, retaining 80 % of its initial capacitance after 5 K charge/discharge cycles. A symmetric supercapacitor device was prepared using Sb₂O₃/15 mg rGO composite as the electrodes for both positive and negative ends. The device exhibited a high specific energy of 44.36 Wh kg⁻¹ and a significant specific power of 850.76 W kg⁻¹. Moreover, it maintained 5.025 Wh kg⁻¹ at a specific power of 7.25 kW kg⁻¹. These results indicated that the Sb₂O₃/15 mg rGO composite has the potential promising application as an energy-storage electrode material, as no investigations have been conducted on using Sb₂O₃/rGO as a supercapacitor electrode.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"156 ","pages":"Article 107655"},"PeriodicalIF":3.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141978448","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}

{"title":"Structural and magnetic insights of the novel phosphate Ca2NiFe2(PO4)4","authors":"Sirine El Arni ,&nbsp;Loubna Chayal ,&nbsp;Fouad Alloun ,&nbsp;Mohammed Hadouchi ,&nbsp;Abderrazzak Assani ,&nbsp;Mohamed Saadi ,&nbsp;Mimoun El Marssi ,&nbsp;Abdelilah Lahmar ,&nbsp;Lahcen El Ammari","doi":"10.1016/j.solidstatesciences.2024.107652","DOIUrl":"10.1016/j.solidstatesciences.2024.107652","url":null,"abstract":"<div><p>One of the primary goals of scientists in the field of materials chemistry is to explore new functional materials, the discovery of new crystal structures and the understanding of their structure-properties relationship. This paper outlines the synthesis of a novel orthophosphate, Ca₂NiFe₂(PO₄)₄, in the single crystal and powder forms. The crystallographic analysis reveals that this newly synthesized phosphate exhibits an orthorhombic crystal lattice with the <em>Pbca</em> space group. The crystal structure is composed of PO₄ tetrahedra connected to Fe1O₆, Fe2O₅ and NiO₅ polyhedra through shared vertices. This interconnection forms a three-dimensional framework that encloses cavities housing Ca²⁺ cations. A sol-gel technique was employed to obtain the pure powder. The Rietveld refinement indicates an excellent correlation between the calculated and observed X-ray diffraction patterns. This material was further characterized structurally using infrared and Raman spectroscopy, and morphologically by scanning electron microscopy. The magnetic measurements revealed two magnetic transitions at T₁∼8.9 K and T₂∼16.5 K suggesting the presence of magnetic frustration with overall dominant antiferromagnetic behavior.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107652"},"PeriodicalIF":3.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948765","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}

{"title":"Structural, optical and electrochemical properties of Sr-doped ZnO nanoparticles","authors":"I.S. Karthigayan ,&nbsp;D. Gopinath ,&nbsp;P.Baby Shalini ,&nbsp;L.Bruno Chandrasekar ,&nbsp;S.Rafi Ahamed","doi":"10.1016/j.solidstatesciences.2024.107651","DOIUrl":"10.1016/j.solidstatesciences.2024.107651","url":null,"abstract":"<div><p>The Sr-doped ZnO nanoparticles have been synthesized by the chemical precipitation method at room temperature. The prepared nanoparticles are annealed at 500 °C for 4 h. The nanoparticles have been characterized using X-ray diffraction (XRD) technique, scanning electron microscope and UV–Vis spectroscopy. The XRD studies reveal the formation of a wurtzite geometry. The crystallite size, dislocation density and strain are examined as a function of Sr-doping concentration. The band gap of the prepared nanoparticles ranges from 3.46 eV to 3.56 eV. The nanoparticles have a higher hole concentration than electron concentration. Supercapacitor cells have been prepared by using synthesized nanoparticle electrodes and it is characterized using cyclic voltammetry (CV) by using KOH as an electrolyte solution. The calculated specific capacitance is high at a high doping concentration of ‘Sr’.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107651"},"PeriodicalIF":3.4,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948766","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}