Solid State Sciences最新文献

{"title":"Engineering magnetic phase transitions and bandgap tunability in Co-doped NiO nanoparticles for spintronic and optoelectronic applications","authors":"Arvind Kumar ,&nbsp;Manish Kumar ,&nbsp;Prayas Chandra Patel ,&nbsp;Prakash Chandra Sati ,&nbsp;Samiksha Dabas ,&nbsp;Manish Kumar Srivastava","doi":"10.1016/j.solidstatesciences.2025.108027","DOIUrl":"10.1016/j.solidstatesciences.2025.108027","url":null,"abstract":"<div><div>This study presents a comprehensive investigation of the structural, optical, and magnetic properties of cobalt-doped nickel oxide (Ni_1-xCo_xO, 0.0 ≤ x ≤ 0.08) nanoparticles synthesized via a citrate-assisted sol-gel method. X-ray diffraction (XRD) combined with Rietveld refinement reveals a doping-induced phase evolution from a mixed-phase system (NiO and metallic Ni) to a single-phase cubic NiO structure at x = 0.08. Raman and FTIR analyses confirm the incorporation of Co into the NiO lattice, along with strain-induced structural distortions and lattice disorder. Magnetic measurements demonstrate a distinct transition from ferromagnetic (FM) behaviour at x = 0.04 to antiferromagnetic (AFM) ordering at x = 0.08, attributed to Co-mediated exchange interactions and strain-induced modulation of spin correlations. Optical absorption spectra show bandgap tuning in the range of 2.9–3.5 eV, driven by defect-induced states at low Co content and quantum confinement at higher doping levels. These results highlight the crucial role of Co doping in simultaneously tailoring the structural, magnetic, and optical properties of NiO nanoparticles, establishing their potential for multifunctional applications in spintronic, optoelectronic, and photovoltaic devices.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108027"},"PeriodicalIF":3.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665478","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":"Optimizing CHA-type zeolite synthesis via dry gel conversion method for direct air capture of CO2: Effects of seed addition, H2O/Gel ratios, crystallization conditions, and aging time","authors":"Weerawit Luewanichwong ,&nbsp;Vanpaseuth Phouthavong ,&nbsp;Bhumin Than-ardna ,&nbsp;Takeshi Hagio ,&nbsp;Uthaiporn Suriyapraphadilok","doi":"10.1016/j.solidstatesciences.2025.108026","DOIUrl":"10.1016/j.solidstatesciences.2025.108026","url":null,"abstract":"<div><div>Carbon dioxide (CO₂) is the most prevalent greenhouse gas emitted by human activities, contributing significantly to global warming. Developing efficient and more environmentally friendly CO₂ capture technologies is crucial in addressing this environmental challenge. This study synthesized CHA-type zeolite using the environmental-friendly dry-gel conversion (DGC) method, with an emphasis on optimizing key synthesis parameters. The resulting CHA-type zeolite exhibited a surface area of 71 m²/g and a pore volume of 0.163 cm³/g. The CO₂ adsorption performance of CHA-type zeolite synthesized via DGC method was evaluated for the first time under direct air capture conditions (434 ppm CO₂) with 60 % relative humidity. Across ten adsorption cycles, the CHA-type zeolite synthesized from a gel composition of Si/Al = 75 demonstrated a CO₂ capture capacity in the range of 0.068 ± 0.011 mmol-CO₂/g-sorbent, which is relatively high compared to other zeolites under humid conditions. The cyclic adsorption tests indicate that the material maintains its performance over repeated capture cycles. These results highlight the potential of CHA-type zeolite, synthesized using the environmentally friendly DGC method, for efficiently capturing low concentrations of CO₂.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108026"},"PeriodicalIF":3.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655723","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":"Preparation of dendritic ZnO/Ag-QDs/AgCl photocatalysts and its photodegradation of organic dyes and antibiotics","authors":"Chunhong Chen ,&nbsp;Xuewen Zhu ,&nbsp;Hui Yu,&nbsp;Ming Yang,&nbsp;Xiangting Dong,&nbsp;Ying Yang","doi":"10.1016/j.solidstatesciences.2025.108025","DOIUrl":"10.1016/j.solidstatesciences.2025.108025","url":null,"abstract":"<div><div>By modifying metallic elemental substance between two semiconductors can construct indirect Z-type heterojunction to improve the separation efficiency of photogenerated charges, while noble metal quantum dots (QDs) can provide surface plasmon resonance (SPR) effect to broaden the range and ability of light absorption of composite. 3D dendritic ZnO/Ag-QDs/AgCl photocatalyst was successfully prepared using a simple co-precipitation and photoreduction method. The prepared material achieved complete degradation of MB, RhB, CR, MO and NOR under simulated sunlight and natural light. The excellent photocatalytic performance can be attributed to the Z-type heterojunction, the SPR effect and the large specific surface area. This study provides a new strategy for constructing Z-type heterojunctions and modulating active species in photocatalytic processes.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108025"},"PeriodicalIF":3.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655722","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":"Macrocyclic ligand - cobalt (III) complex of liquid crystal for future applications","authors":"Naima Sharmin,&nbsp;Md. Jahidul Islam,&nbsp;Md. Hafizul Islam","doi":"10.1016/j.solidstatesciences.2025.108024","DOIUrl":"10.1016/j.solidstatesciences.2025.108024","url":null,"abstract":"<div><div>Thermally stable macrocyclic transition metal containing liquid crystals (metallomesogens) have garnered attention for their remarkable properties and potential applications across diverse scientific domains. These self-organizing liquid crystals with thermotropic transitions are excellent mtallomesogens where functional properties of the transition metals such as magnetic criteria, charge conduction ability, redox, or luminous property are combined with the porous structure and wide-ranging surface area of macrocycles. This association leads to the formation of substances with promising applications across various smart electronic devices, spanning from optical displays, to drug delivery, and energy storage and conversion systems. This study presents the synthesis, structural analysis, and evaluation of thermal and mesomorphic characteristics of a cobalt-based macrocyclic metallomesogen, [Co(Clm)(Dec)₂].(Dec); where Clm denotes cyclam (1,4,8,11-tetraazacyclotetradecane) and Dec represents 4–decyloxybenzoate (4-CH₃(CH₂)₉OC₆H₄COO-). Although single-crystal X-ray diffraction was unsuccessful due to challenges in crystal growth, the coordination geometry of the trans-III Co(III) ion that was distorted octahedral was deduced through elemental examination, spectra obtained from UV–visible range absorption, Fourier-transform infrared (FTIR) spectroscopy, magnetic susceptibility measurements at ambient temperature, and thermogravimetric analysis (TG). The ambient temperature magnetic susceptibility discovered a magnetic moment of 0.60 BM., distinctive of diamagnetic low spin Co(III) in octahedral geometry. Thermal analysis by TG found good thermal stability, with disintegration initiated at 229 °C. Transitions of phase were perceived through DSC, and the representative optical textures were investigated by means of POM (Polarizing Optical Microscope); that exhibited growth of battonet textures typical for smectic mesophase.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108024"},"PeriodicalIF":3.4,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679495","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":"Research progress on Mn-based and Co-based Full-Heusler alloys","authors":"Hezhang Li ,&nbsp;Md All Amin Newton ,&nbsp;Chen Chen ,&nbsp;Zhicheng Huang ,&nbsp;Kei Hayashi ,&nbsp;Yuzuru Miyazaki ,&nbsp;Jing-Feng Li ,&nbsp;Chao Wang","doi":"10.1016/j.solidstatesciences.2025.108019","DOIUrl":"10.1016/j.solidstatesciences.2025.108019","url":null,"abstract":"<div><div>This article reviews the research progress and application prospects of Mn- and Co-based Full-Heusler alloys. Full-Heusler alloys have garnered substantial attention because of their unique crystal structures and excellent physical properties. This article introduces the basic concepts and crystal structures of Full-Heusler alloys, focusing on the magnetic and electronic properties of Mn- and Co-based Full-Heusler alloys. Subsequently, the potential applications of these two types of alloys in fields such as spintronics, magnetic refrigeration, and thermoelectric materials are elaborated. Finally, the article summarizes the current challenges in research and looks forward to future development directions, providing a reference for further study and application of Mn-based and Co-based Full-Heusler alloys.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108019"},"PeriodicalIF":3.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655724","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, structure and optical characteristics of La2Te4O11:Sm3+:A novel orange-red emitting phosphor with high thermal stability and color purity for WLEDs","authors":"Wenhao Li ,&nbsp;Junjie Feng ,&nbsp;Leyi Zhang ,&nbsp;Yu Zhang ,&nbsp;Huayu Sun ,&nbsp;Likun Guan ,&nbsp;Fanzhong Zeng ,&nbsp;Fei Li ,&nbsp;Dan Zhang ,&nbsp;Mubiao Xie ,&nbsp;Ruijin Yu","doi":"10.1016/j.solidstatesciences.2025.108022","DOIUrl":"10.1016/j.solidstatesciences.2025.108022","url":null,"abstract":"<div><div>This study introduces novel reddish-orange luminescent La₂Te₄O₁₁:<em>x</em>Sm³⁺ phosphors fabricated via a high-temperature solid-state synthesis technique. A comprehensive investigation was conducted on the X-ray diffraction (XRD) pattern, crystal structure, morphology, luminescent spectra, elemental composition, thermal stability, internal quantum efficiency, and decay lifetimes of the phosphor. The results demonstrate that the phosphor is classified within the monoclinic crystal system and corresponds to the <em>C</em>2/<em>c</em> (No.15) space group. The band gap of La₂Te₄O₁₁ was assessed using Materials Studio and quantified through diffuse reflectance spectroscopy. Under 406 nm excitation, the ideal Sm³⁺ doping concentration of 15 mol% yields strong orange-red emission at 603 nm, exhibiting excellent chromatic stability and high color purity. At 480 K, this emission performance remains highly stable, preserving 92.3 % of its room-temperature luminescence intensity, supported by a substantial activation energy (0.42 eV). Additionally, this phosphor achieves an impressive internal quantum efficiency (67.32 %). WLEDs have good correlated color temperatures (CCT) and a high color rendering index (CRI). When combined with a 406 nm ultraviolet (UV) chip and other commercial phosphors, they outperform conventional products. As a result, the La₂Te₄O₁₁:Sm³⁺ phosphors have wide application prospects for white light illumination.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108022"},"PeriodicalIF":3.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604997","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":"Carrier effective mass, phonon behavior and vibration characteristics of Li2X and Li2X2 (X = O, S) from first-principles calculations","authors":"Ye-Feng Peng ,&nbsp;Mi Zhong ,&nbsp;Qiang Luo ,&nbsp;Yang Xiao ,&nbsp;Yi Qiu ,&nbsp;Bin Tang","doi":"10.1016/j.solidstatesciences.2025.108021","DOIUrl":"10.1016/j.solidstatesciences.2025.108021","url":null,"abstract":"<div><div>Lithium–sulfur (Li–S) batteries are considered one of the most promising energy storage systems due to their high theoretical energy density. However, their practical applications are hindered by the shuttle effect caused by polysulfide dissolution. To address this challenge, we have systematically investigated the carrier effective mass, phonon behavior and vibrational characteristics of Li₂X and Li₂X₂ (X = O, S) using First-principles calculations. Effective mass calculations indicated higher carrier mobility in cubic Li₂S and hexagonal Li₂S₂. Its broader optical absorption also suggests potential in light-assisted suppression of reaction barriers. Due to different electronic transitions between S-<em>p</em> and Li-<em>s</em> states, hexagonal Li₂S₂ showed stronger thermally excited lattice vibrations compared to tetragonal Li₂S₂. Phonon behavior and lattice vibrational analyses suggest that the S-S bond vibrations can be optically modulated. It promotes the production of Li₂S rather than the polysulfides in the reduction, thus suppressing the extent of the shuttle effect. These findings offer valuable insights for the rational design of high-performance Li-S batteries with reduced shuttle effects and enhanced energy capacity.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108021"},"PeriodicalIF":3.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655822","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 synthesis of molybdenum phosphide employing a single source precursor and its use as a hydrogen evolution catalyst with broad pH activity","authors":"Thom T. Nguyen ,&nbsp;Anh T.Q. Pham ,&nbsp;Duc N. Nguyen ,&nbsp;Tung H. To ,&nbsp;Ha L. Nguyen ,&nbsp;Tan Le Hoang Doan ,&nbsp;Phong D. Tran ,&nbsp;Anh D. Nguyen","doi":"10.1016/j.solidstatesciences.2025.108023","DOIUrl":"10.1016/j.solidstatesciences.2025.108023","url":null,"abstract":"<div><div>Molybdenum phosphide is a promising noble-metal-free catalyst for the H₂ evolution reaction. The synthesis of molybdenum phosphide was usually delicate, requiring a mixture of Mo and P precursors and hard reaction conditions. Herein, we report on a novel strategy for synthesizing molybdenum phosphide by employing a molybdenum complex, namely [Mo^III(dppe)I₃DMF] wherein dppe is 1,2-bis(diphenylphosphino) ethane, as the single precursor source. The synthesis, structural characterization and thermal behaviour of [Mo^III(dppe)I₃DMF], being a novel Mo^III complex, was described. The thermal decomposition of [Mo^III(dppe)I₃DMF] generating hexagonal crystalline molybdenum phosphide was investigated in details showing the impacts of decomposition temperature to the product's morphology, chemical composition and crystallinity. The best molybdenum phosphide was obtained at 800 °C which showed attractive catalytic activities for the H₂ evolution in acidic, neutral and alkaline electrolytes. It displayed an onset potential at −0.13 V <em>vs.</em> RHE and required −0.3 V <em>vs.</em> RHE to sustain the benchmarking catalytic current density of 10 mA/cm². It was found to be stable during the H₂ evolution catalysis.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108023"},"PeriodicalIF":3.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604998","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":"Heat triggered structural transformation of SiO2 coated akaganeite nanoparticles: ε-Fe2O3 phase formation","authors":"Mirjana M. Milić,&nbsp;Nataša Jović Orsini","doi":"10.1016/j.solidstatesciences.2025.108017","DOIUrl":"10.1016/j.solidstatesciences.2025.108017","url":null,"abstract":"<div><div>Orthorhombic epsilon iron oxide polymorph ε-Fe₂O₃ still attracts extensive research interest due to its interesting magnetic properties and potential applications in high-density data storage and high-frequency millimeter electromagnetic waves shielding. The present paper reports on the fabrication of ε-Fe₂O₃ polymorph through thermal treatment of silica coated akaganeite nanoparticles using various heating protocols. Morphology, structure and magnetic properties of the resulting samples were assessed by various experimental techniques. Transmission electron microscopy (TEM) of the four samples calcined at temperatures above 900 °C showed that the obtained particles were roughly oval in shape with average particle diameters (<em>D</em>_<em>TEM</em>), in the range from 13 nm to 23 nm. The X-ray diffractometry confirmed presence of prevailing ε-Fe₂O₃ phase with addition of α-Fe₂O₃ phase whose amount depended on the heating regime used. The saturation magnetization, <em>M</em>_<em>s</em>, values were in the range 9.5–11.6 Am²/kg, while the room temperature (RT) coercivity fields, <em>H</em>_<em>c</em>, ranged from 111.4 kA/m (1.4 kOe) to 1002.7 kA/m (12.6 kOe). The highest <em>M</em>_<em>s</em> and <em>H</em>_<em>c</em> were achieved in the sample heated up to 930 °C through several dwelling steps at different temperatures, while another sample also annealed at 930 °C but using different heating path, displayed substantially lower coercivity <em>H</em>_<em>c</em> = 628.7 kA/m (7.9 kOe). Annealing at higher final temperatures 940 °C and 1000 °C also did not improve coercivity due to increased number of superparamagnetic particles. Presented results emphasize importance of different parameters involved in the process of thermal treatment of epsilon iron oxide precursor samples. It was demonstrated that magnetic properties of the ε-Fe₂O₃ polymorph prepared from silica coated akaganeite nanoparticles can be tuned by employing a multistep heating protocol with carefully chosen dwelling temperatures and times.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108017"},"PeriodicalIF":3.4,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522162","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":"Effective degradation of tetracycline by visible light-assisted activation of persulfate (PDS) by the magnetic material MnFe2O4/BC/P-CN","authors":"Xiaoling Liu,&nbsp;Wanyi Liu,&nbsp;Haijuan Zhan,&nbsp;Xiaoyan Chen,&nbsp;Heping Li","doi":"10.1016/j.solidstatesciences.2025.108016","DOIUrl":"10.1016/j.solidstatesciences.2025.108016","url":null,"abstract":"<div><div>Large amounts of antibiotic residues cause serious damage to the ecological environment and water resources. Traditional treatment techniques have limited ability to remove them. In this paper, the magnetic material MnFe₂O₄/BC/P-CN was successfully prepared using a simple combination of roasting and impregnation strategy. Photofenton degradation of antibiotic pollutant tetracycline was carried out under visible light irradiation using peroxosulfate (K₂S₂O₈) as an oxidizing agent, and the degradation rate reached 99.7 % within 70 min. This was attributed to the synergistic promotional effect between P-CN/BC and MnFe₂O₄, including good adsorption, enhanced light absorption, and high charge carrier mobility. EPR assay showed that the main active substances included •O₂⁻, ¹O₂, •SO₄⁻ and •OH, which was derived from S₂O₈²⁻, which promoted the self-oxidizing reduction of iron and manganese atoms. The materials were found to be structurally stable with excellent performance through multiple recycling. This ternary photocatalyst, composed of three semiconductors with excellent band gaps, is expected to achieve efficient absorption of sunlight. We characterized the P-CN/BC/MnFe₂O₄ photocatalyst through various analytical techniques and investigated its performance in degrading TC under visible light. Additionally, we used methods such as radical detection and intermediate product identification to thoroughly elucidate the mechanism of persulfate activation by photocatalysis and the degradation pathway of tetracycline.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108016"},"PeriodicalIF":3.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517699","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}