Solid State Sciences最新文献

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Modulation of MnO2-BiOCl photocatalyst immobilized in polyvinyl alcohol hydrogel for reusable photodegradation of Rhodamine B and Ibuprofen under visible light

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2025.107831

Sin Ling Chiam , C.P. Leo , Swee-Yong Pung , Wei Lun Ang

The presence of pharmaceutical drugs and organic dyes in water poses significant concerns for both human health and the environment. While photocatalysts offer an effective means of pollutant degradation without generating secondary waste, they are commonly limited by charge recombination and small particle size for large-scale practical use. In this study, BiOCl was chemically deposited on MnO₂ and immobilization in the polyvinyl alcohol hydrogel thin films for the photodegradation of Rhodamine B and Ibuprofen under visible light. The plate-like BiOCl successfully grown between nanoflowers of MnO₂, as proven by scanning and transmission electron microscopy images. Energy dispersive X-ray analysis and Fourier-transform infrared spectroscopy results affirmed the chemical characteristics of BiOCl and MnO₂, while X-ray diffraction patterns confirmed the crystallinity of BiOCl and MnO₂. Optimizing the BiOCl loading, 2:1 in ratio with MnO₂ yielded a PVA thin film with high photocatalytic activity. 99 % of Rhodamine and 97 % of Ibuprofen were degraded in 60 min and 90 min respectively. Even after five recycles, the catalyst maintained over 80 % efficiency for RhB and 70 % for Ibuprofen. The degradation was primarily driven by •O₂⁻ and e⁻ generated by the MnO₂ and BiOCl composite. This study highlights the potential of BiOCl-MnO₂/PVA hydrogel composites for sustainable, reusable, and efficient water treatment applications.

{"title":"Modulation of MnO2-BiOCl photocatalyst immobilized in polyvinyl alcohol hydrogel for reusable photodegradation of Rhodamine B and Ibuprofen under visible light","authors":"Sin Ling Chiam , C.P. Leo , Swee-Yong Pung , Wei Lun Ang","doi":"10.1016/j.solidstatesciences.2025.107831","DOIUrl":"10.1016/j.solidstatesciences.2025.107831","url":null,"abstract":"<div><div>The presence of pharmaceutical drugs and organic dyes in water poses significant concerns for both human health and the environment. While photocatalysts offer an effective means of pollutant degradation without generating secondary waste, they are commonly limited by charge recombination and small particle size for large-scale practical use. In this study, BiOCl was chemically deposited on MnO2 and immobilization in the polyvinyl alcohol hydrogel thin films for the photodegradation of Rhodamine B and Ibuprofen under visible light. The plate-like BiOCl successfully grown between nanoflowers of MnO₂, as proven by scanning and transmission electron microscopy images. Energy dispersive X-ray analysis and Fourier-transform infrared spectroscopy results affirmed the chemical characteristics of BiOCl and MnO₂, while X-ray diffraction patterns confirmed the crystallinity of BiOCl and MnO₂. Optimizing the BiOCl loading, 2:1 in ratio with MnO2 yielded a PVA thin film with high photocatalytic activity. 99 % of Rhodamine and 97 % of Ibuprofen were degraded in 60 min and 90 min respectively. Even after five recycles, the catalyst maintained over 80 % efficiency for RhB and 70 % for Ibuprofen. The degradation was primarily driven by •O2− and e− generated by the MnO2 and BiOCl composite. This study highlights the potential of BiOCl-MnO₂/PVA hydrogel composites for sustainable, reusable, and efficient water treatment applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107831"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098785","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

Hydrothermal growth of vanadium pentoxide nanofibers on carbon nanofiber mat: An anodic material for solid-state asymmetric supercapacitors

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107804

Baban Dey , Md Wasi Ahmad , Refat Al-Shannaq , Tahseen Kamal , SK Safdar Hossain , Pulak Dutta , Arup Choudhury , Duck-Joo Yang

A supercapacitor is an excellent energy storage solution due to its high-power density, rapid charge and discharging, and long cycle life. However, the main technical issue with supercapacitors is low energy density. One potential solution is to develop advanced electrode materials that store more energy. In this study, we have grown 1D vanadium pentoxide nanofibers (VNFs) on a carbon nanofibers (CNFs) mat via a hydrothermal approach. The morphological study showed that the hybrid mat consists of a sandwich structure of VNFs and CNFs with a large surface area and plenty of pores, which facilitates efficient ion transport and electron movement important for high capacitance. Furthermore, a synergistic combination of pseudo-capacitance and electrical double layer capacitance (EDLC) from redox active VNFs and porous CNFs produces high capacitances of 700.1 and 615.2 F/g at 0.1 A/g in neutral electrolytes such as Na₂SO₄ and Li₂SO₄, respectively. A flexible prototype supercapacitor was constructed using a VNF/CNF hybrid mat as an anode, activated carbon cloth as a cathode, and a Na₂SO₄ or Li₂SO₄-loaded polyvinyl alcohol (PVA) membrane as an electrolyte-cum-separator. These ASC devices delivered high energy density of 72.51 and 51.83 Wh/kg with Na₂SO₄ and Li₂SO₄-based electrolytes, respectively, which are superior to those obtained from previously reported ASCs made with various V₂O₅/C anodes. The PVA-based membrane electrolytes provide excellent bending stability and leakage-proof features to ASCs, which are critical to flexible and wearable electronics.

{"title":"Hydrothermal growth of vanadium pentoxide nanofibers on carbon nanofiber mat: An anodic material for solid-state asymmetric supercapacitors","authors":"Baban Dey , Md Wasi Ahmad , Refat Al-Shannaq , Tahseen Kamal , SK Safdar Hossain , Pulak Dutta , Arup Choudhury , Duck-Joo Yang","doi":"10.1016/j.solidstatesciences.2024.107804","DOIUrl":"10.1016/j.solidstatesciences.2024.107804","url":null,"abstract":"<div><div>A supercapacitor is an excellent energy storage solution due to its high-power density, rapid charge and discharging, and long cycle life. However, the main technical issue with supercapacitors is low energy density. One potential solution is to develop advanced electrode materials that store more energy. In this study, we have grown 1D vanadium pentoxide nanofibers (VNFs) on a carbon nanofibers (CNFs) mat via a hydrothermal approach. The morphological study showed that the hybrid mat consists of a sandwich structure of VNFs and CNFs with a large surface area and plenty of pores, which facilitates efficient ion transport and electron movement important for high capacitance. Furthermore, a synergistic combination of pseudo-capacitance and electrical double layer capacitance (EDLC) from redox active VNFs and porous CNFs produces high capacitances of 700.1 and 615.2 F/g at 0.1 A/g in neutral electrolytes such as Na2SO4 and Li2SO4, respectively. A flexible prototype supercapacitor was constructed using a VNF/CNF hybrid mat as an anode, activated carbon cloth as a cathode, and a Na2SO4 or Li2SO4-loaded polyvinyl alcohol (PVA) membrane as an electrolyte-cum-separator. These ASC devices delivered high energy density of 72.51 and 51.83 Wh/kg with Na2SO4 and Li2SO4-based electrolytes, respectively, which are superior to those obtained from previously reported ASCs made with various V2O5/C anodes. The PVA-based membrane electrolytes provide excellent bending stability and leakage-proof features to ASCs, which are critical to flexible and wearable electronics.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107804"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093191","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 ionic conductivity of Na1+2xMxZr2-x(PO4)3 (M – Mg, Mn) NASICON-type ceramic materials

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107786

Elena A. Asabina , Vladimir I. Pet'kov , Irina A. Stenina , Andrey B. Yaroslavtsev

Ceramics of the Na_1+2xM_xZr_2-x(PO₄)₃ (M − Mg, Mn) composition were synthesized by the co-precipitation technique with subsequent annealing. The samples were characterized using X-ray diffraction with the Rietveld refinement, scanning electron microscopy, and impedance spectroscopy. The studied phosphates belong to the NASICON type structure. The solid solutions (0 ≤ x ≤ 1.0) were shown to be formed in the investigated systems. To study the effect of the chemical composition and sintering additive on conductivity, two series of ceramics were prepared for each phosphate: with and without ZnO (2 wt%) additive. The ionic conductivity of the studied phosphates followed the Arrhenius law and passed through a maximum with x growth. It was shown that the addition of zinc oxide also leads to partial substitution of zirconium in the lattice and an increase in ionic conductivity. The highest conductivity was achieved for the Na_2.6Mg_0.8Zr_1.2(PO₄)₃ ceramic with 2 wt% ZnO additive (6.8∙10⁻³ S cm⁻¹ at 673 К).

{"title":"Synthesis and ionic conductivity of Na1+2xMxZr2-x(PO4)3 (M – Mg, Mn) NASICON-type ceramic materials","authors":"Elena A. Asabina , Vladimir I. Pet'kov , Irina A. Stenina , Andrey B. Yaroslavtsev","doi":"10.1016/j.solidstatesciences.2024.107786","DOIUrl":"10.1016/j.solidstatesciences.2024.107786","url":null,"abstract":"<div><div>Ceramics of the Na1+2xMxZr2-x(PO4)3 (M − Mg, Mn) composition were synthesized by the co-precipitation technique with subsequent annealing. The samples were characterized using X-ray diffraction with the Rietveld refinement, scanning electron microscopy, and impedance spectroscopy. The studied phosphates belong to the NASICON type structure. The solid solutions (0 ≤ x ≤ 1.0) were shown to be formed in the investigated systems. To study the effect of the chemical composition and sintering additive on conductivity, two series of ceramics were prepared for each phosphate: with and without ZnO (2 wt%) additive. The ionic conductivity of the studied phosphates followed the Arrhenius law and passed through a maximum with x growth. It was shown that the addition of zinc oxide also leads to partial substitution of zirconium in the lattice and an increase in ionic conductivity. The highest conductivity was achieved for the Na2.6Mg0.8Zr1.2(PO4)3 ceramic with 2 wt% ZnO additive (6.8∙10−3 S cm−1 at 673 К).</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107786"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093218","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

Low-temperature joining of skutterudite thermoelectric materials using Ag nanoparticles

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107785

Huiyuan Geng, Hao Zhu, Ziming Deng, Yuhan Qu

The successful fabrication of a CoSb₃-based skutterudite thermoelectric generator demands the presence of both a diffusion barrier layer and a low-temperature joining process. Herein, we present an approach based on the Gibbs-Thomson effect to facilitate the low-temperature joining of skutterudite compounds with Cu-Mo electrodes. We use the Ag nanoparticles for bonding the Cu-Mo electrodes to the skutterudite compounds, which have been metallized with a Co-Mo nanograined electroplated layer at temperature of 400 °C. This results in the joint strength of 15 MPa and maintaining a contact resistance of 4.16 μΩcm². The diffusion of Cu in the Ag sintering layer plays a vital role in the formation of joint. The presence of Cu-containing solid solutions between the Ag layer and the Co-Mo layer, as well as between the Ag layer and the Cu-Mo electrode, contributes to the establishment of a strong metallurgical bond between these components.

引用次数: 0

Zirconium and copper dual-doping strategy in NaNiFeMnO2: Advancing the electrochemical stability and capacity for sodium-ion batteries

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107822

Safia Bibi, Tao Chen, Dan Sun, Kaiyu Liu

O3-type layered transition-metal oxide cathode materials are considered one of the most promising cathode materials for sodium ion batteries due to their high theoretical capacity and optimal operating potential. However, it encounters significant challenges, such as poor cycling stability and limited reversible capacity, primarily due to structural instability. Herein, we have successfully synthesized dual cation doped O3-type Na(Ni_0.3Fe_0.3Mn_0.3)_0.87Cu_0.12Zr_0.01O₂ (NaCuZrFNM). The co-doping of Zr/Cu into NaFNM layered structure led to an expansion of the sodium layer, enabling enhanced sodium ion mobility during charge/discharge processes compared to NaFNM. Therefore, sodium ions demonstrated faster diffusion in NaCuZrFNM than NaFNM. It was found that the Zr/Cu dual-doped NaFNM electrode deliverers a reversible capacity of 135.2 mA h/g at 0.1C as well as 121.5 mA h/g initial discharge capacity with remarkable capacity retention of 81.8 % at 1C after 250 cycles. Furthermore, it also exhibits the good rate performance of 82 mA h/g at high current density of 10C with 74.4 % capacity retention after 1000 cycles, indicating excellent structural stability. Our results demonstrate that Cu/Zr dual-doping in O3-type cathode materials is viable strategy for improving the long-term performance of sodium-ion batteries.

{"title":"Zirconium and copper dual-doping strategy in NaNiFeMnO2: Advancing the electrochemical stability and capacity for sodium-ion batteries","authors":"Safia Bibi, Tao Chen, Dan Sun, Kaiyu Liu","doi":"10.1016/j.solidstatesciences.2024.107822","DOIUrl":"10.1016/j.solidstatesciences.2024.107822","url":null,"abstract":"<div><div>O3-type layered transition-metal oxide cathode materials are considered one of the most promising cathode materials for sodium ion batteries due to their high theoretical capacity and optimal operating potential. However, it encounters significant challenges, such as poor cycling stability and limited reversible capacity, primarily due to structural instability. Herein, we have successfully synthesized dual cation doped O3-type Na(Ni0.3Fe0.3Mn0.3)0.87Cu0.12Zr0.01O2 (NaCuZrFNM). The co-doping of Zr/Cu into NaFNM layered structure led to an expansion of the sodium layer, enabling enhanced sodium ion mobility during charge/discharge processes compared to NaFNM. Therefore, sodium ions demonstrated faster diffusion in NaCuZrFNM than NaFNM. It was found that the Zr/Cu dual-doped NaFNM electrode deliverers a reversible capacity of 135.2 mA h/g at 0.1C as well as 121.5 mA h/g initial discharge capacity with remarkable capacity retention of 81.8 % at 1C after 250 cycles. Furthermore, it also exhibits the good rate performance of 82 mA h/g at high current density of 10C with 74.4 % capacity retention after 1000 cycles, indicating excellent structural stability. Our results demonstrate that Cu/Zr dual-doping in O3-type cathode materials is viable strategy for improving the long-term performance of sodium-ion batteries.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107822"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149348","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

Thermal expansion and ionic conductivity of K5A0.5Hf1.5(MoO4)6 (A = Sr, Pb)

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107816

Evgeniy Kovtunets , Yunna Tushinova , Tatyana Spiridonova , Tsyrendyzhit Bazarova , Alexandra Logvinova , Alexandr Bogdanov , Bair Bazarov

Compounds K₅A_0.5Hf_1.5(MoO₄)₆ (A = Sr, Pb) were synthesized using solid-state ceramic method. The sequence of chemical reactions that occur during the formation of these compounds has been elucidated. It was determined that the compounds melt incongruently at 628 °C, and their crystal structures were refined using the Rietveld method. Theoretical IR spectra were calculated using the obtained structural data and DFT modeling results. These spectra exhibited a high degree of correlation with the experimental data, thereby confirming the presence of isolated MoO₄ groups within the structure. It has been shown that the electrical conductivity of K₅A_0.5Hf_1.5(MoO₄)₆ (A = Sr, Pb) reached about 10⁻⁴ S/cm, which exceeds the conductivity of previously studied similar ternary molybdates. BVSE calculations indicated a high probability of oxygen transport in the studied compounds. Thermal deformations were studied by high temperature powder X-ray diffraction in the temperature range of 30–500 °C. The results showed that the ternary molybdates K₅A_0.5Hf_1.5(MoO₄)₆ (A = Sr, Pb) are materials with high thermal expansion (α_V = 40–56 x10⁻⁶ °C^–1) and exhibit anisotropy along the crystallographic c-axis.

{"title":"Thermal expansion and ionic conductivity of K5A0.5Hf1.5(MoO4)6 (A = Sr, Pb)","authors":"Evgeniy Kovtunets , Yunna Tushinova , Tatyana Spiridonova , Tsyrendyzhit Bazarova , Alexandra Logvinova , Alexandr Bogdanov , Bair Bazarov","doi":"10.1016/j.solidstatesciences.2024.107816","DOIUrl":"10.1016/j.solidstatesciences.2024.107816","url":null,"abstract":"<div><div>Compounds K5A0.5Hf1.5(MoO4)6 (A = Sr, Pb) were synthesized using solid-state ceramic method. The sequence of chemical reactions that occur during the formation of these compounds has been elucidated. It was determined that the compounds melt incongruently at 628 °C, and their crystal structures were refined using the Rietveld method. Theoretical IR spectra were calculated using the obtained structural data and DFT modeling results. These spectra exhibited a high degree of correlation with the experimental data, thereby confirming the presence of isolated MoO4 groups within the structure. It has been shown that the electrical conductivity of K5A0.5Hf1.5(MoO4)6 (A = Sr, Pb) reached about 10−4 S/cm, which exceeds the conductivity of previously studied similar ternary molybdates. BVSE calculations indicated a high probability of oxygen transport in the studied compounds. Thermal deformations were studied by high temperature powder X-ray diffraction in the temperature range of 30–500 °C. The results showed that the ternary molybdates K5A0.5Hf1.5(MoO4)6 (A = Sr, Pb) are materials with high thermal expansion (αV = 40–56 x10−6 °C–1) and exhibit anisotropy along the crystallographic c-axis.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107816"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097742","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

Ce(III) complex with o-phenylenediacetato ligand: Synthesis, structure and magnetic properties

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107798

Lenka Krešáková , Miroslava Litecká , Itziar Oyarzabal , Róbert Tarasenko , Hryhorii Titikov , Martin Orendáč , Juraj Černák

Single crystals of Ce(III) complex {[Ce₂(oPDA)₃(H₂O)₂]·2H₂O}_n (1) with O-donor ligand H₂oPDA (o-phenylenediacetic acid) were formed under solvothermal conditions. The crystal structure of 1 is one-dimensional and formed by chains of the Ce(III) ions linked via oPDA²⁻ dianions acting as pentadentate ligands with bridging and chelating functions. The Ce(III) central atom in 1 is nonacoordinated by eight oxygen atoms from four different oPDA²⁻ ligands and one oxygen atom of the aqua ligand yielding O₈O donor set. The investigation of the static susceptibility and magnetization suggested Δ/k_B = 317 K energy difference between the ground and the first excited doublet. Field induced slow magnetic relaxation was revealed in the investigation of alternating susceptibility. The alternation of the relaxation time with temperature confirmed the coexistence of quantum tunneling and Raman relaxation processes with anomalous coefficients for Raman relaxation.

{"title":"Ce(III) complex with o-phenylenediacetato ligand: Synthesis, structure and magnetic properties","authors":"Lenka Krešáková , Miroslava Litecká , Itziar Oyarzabal , Róbert Tarasenko , Hryhorii Titikov , Martin Orendáč , Juraj Černák","doi":"10.1016/j.solidstatesciences.2024.107798","DOIUrl":"10.1016/j.solidstatesciences.2024.107798","url":null,"abstract":"<div><div>Single crystals of Ce(III) complex {[Ce2(oPDA)3(H2O)2]·2H2O}n (1) with O-donor ligand H2oPDA (o-phenylenediacetic acid) were formed under solvothermal conditions. The crystal structure of 1 is one-dimensional and formed by chains of the Ce(III) ions linked via oPDA2− dianions acting as pentadentate ligands with bridging and chelating functions. The Ce(III) central atom in 1 is nonacoordinated by eight oxygen atoms from four different oPDA2− ligands and one oxygen atom of the aqua ligand yielding O8O donor set. The investigation of the static susceptibility and magnetization suggested Δ/kB = 317 K energy difference between the ground and the first excited doublet. Field induced slow magnetic relaxation was revealed in the investigation of alternating susceptibility. The alternation of the relaxation time with temperature confirmed the coexistence of quantum tunneling and Raman relaxation processes with anomalous coefficients for Raman relaxation.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107798"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098233","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

Second-order anisotropy due to magnetostriction for L10-FePt

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107782

D. Legut , P. Nieves

The effective magnetocrystalline anisotropy energy associated with magnetostriction is studied for tetragonal L1

_{0}

-FePt by means of first-principles calculations, which is expressed in terms of the intrinsic anisotropy for an undeformed crystal, the magnetostrictive coefficients, and the elastic tensor. A very small correction is found for the first anisotropy constant

Δ K_{1} / K_{1} = 0.07

%, while a much more significant contribution is obtained for the second one

Δ K_{2} / K_{2} = 21.86

%. General analysis of this effect for tetragonal crystals is provided, finding that

Δ K_{1}

will be always positive for any stable phase with this symmetry. The potential implications and applications of these results are discussed.

{"title":"Second-order anisotropy due to magnetostriction for L10-FePt","authors":"D. Legut , P. Nieves","doi":"10.1016/j.solidstatesciences.2024.107782","DOIUrl":"10.1016/j.solidstatesciences.2024.107782","url":null,"abstract":"<div><div>The effective magnetocrystalline anisotropy energy associated with magnetostriction is studied for tetragonal L1<math><msub><mrow></mrow><mrow><mn>0</mn></mrow></msub></math>-FePt by means of first-principles calculations, which is expressed in terms of the intrinsic anisotropy for an undeformed crystal, the magnetostrictive coefficients, and the elastic tensor. A very small correction is found for the first anisotropy constant <math><mrow><mi>Δ</mi><msub><mrow><mi>K</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>/</mo><msub><mrow><mi>K</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>07</mn></mrow></math>%, while a much more significant contribution is obtained for the second one <math><mrow><mi>Δ</mi><msub><mrow><mi>K</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>/</mo><msub><mrow><mi>K</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>=</mo><mn>21</mn><mo>.</mo><mn>86</mn></mrow></math>%. General analysis of this effect for tetragonal crystals is provided, finding that <math><mrow><mi>Δ</mi><msub><mrow><mi>K</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></math> will be always positive for any stable phase with this symmetry. The potential implications and applications of these results are discussed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107782"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098239","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

Sustainable thermoelectric materials for solar energy applications: A review

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107784

Neelam Baghel , Anil Kumar

The growth and implementation of sustainable thermoelectric materials for solar energy applications are investigated in this review article. Subsequently, thermoelectric materials provide a viable means of directly transforming solar heat into electricity, they are essential to improving the sustainability and efficiency of solar energy systems. This paper examines the principles of thermoelectricity, significant material properties, and the most recent developments in thermoelectric materials, such as lead telluride, bismuth telluride, organic, hybrid, and earth-abundant inorganic compounds. Special attention is given to material performance, environmental impact, scalability, and its integration into solar energy systems. Additionally, issues including stability, low efficiency, and a balance between performance and material sustainability are explored. The assessment concludes by outlining potential research approaches and technological advances that will be required to turn thermoelectric materials into an achievable and future solution to the world's energy problems.

引用次数: 0

Improved catalytic performance of (Fe, Cr)-ZnO/g-C3N4 nanocomposite towards electrocatalytic water splitting for clean energy

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences

Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2025.107823

Dalal Alhashmialameer , Mohammad Shariq , Muhammad Azam Qamar , Hanan A. Althikrallah , Noha Al-Qasmi , F.H. Al-abdali , Leena S. Mohamed , Hala I. Elzubir , Zeyad M. Ahmed

The declining quantity of nonrenewable energy sources and rising in temperatures globally pose serious concerns. Therefore, electrochemical water splitting emerges as a highly efficient and cost-effective method of preparing hydrogen and oxygen, utilizing materials such as metals and their oxides. Beyond precious metals, carbon-based materials have been realized to be efficient in facilitating these reactions. To improve efficiency and optimize potential applications, it has also been established that incorporating metal oxides into the layers of the graphite can significantly improve the activity of HER and OER. In this study, we introduce a newly designed composite electrocatalyst, (Fe, Cr)-ZnO/g-C₃N₄ ((Fe, Cr)-GZN), which demonstrates enhanced electrocatalytic performance. The composite material was synthesized through the coprecipitation of (Fe, Cr)-ZnO with g-C₃N₄. The electrocatalyst's structure was fully analyzed using the important characterization techniques. FTO glass was employed to electrodeposit catalysts to facilitate water splitting investigations. The (Fe, Cr)-GZN composite demonstrated excellent electrochemical water splitting performance, with low overpotentials of 304 mV and a Tafel slope of 89 mV dec⁻¹ for OER, resulting in 10 mA cm⁻² (current density). This performance outperforms Cr-GZN and Fe-GZN composites, demonstrating the (Fe, Cr)-GZN composite's potential as an extremely efficient electrocatalyst for water splitting.

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