Transition metal nitrides and oxynitrides exhibit catalytic properties that make them promising candidates as alternatives to noble metals. A series of high-surface-area chromium oxynitrides, CrOxN1-x (0.10 < x < 0.25), was synthesized from a cheap hydroxide precursor and investigated as unconventional heterogeneous catalysts for the Water-Gas Shift (WGS) reaction. Currently, this reaction is predominantly catalyzed by platinum. Replacing platinum with chromium oxynitrides could provide a more cost-effective and environmentally friendly solution.
过渡金属氮化物和氧氮化物表现出催化性能，使它们成为贵金属替代品的有希望的候选者。以廉价的氢氧前驱体为原料合成了一系列高表面积氮化铬氧化物CrOxN1-x (0.10 < x < 0.25)，并研究了其作为水气转换（WGS）反应的非常规非均相催化剂。目前，该反应主要由铂催化。用氮化铬代替铂可以提供更具成本效益和更环保的解决方案。
{"title":"Exploring chromium oxynitrides as efficient catalysts for the water-gas shift reaction","authors":"Sébastien Mathivet , Guillaume Dubois , Fabien Grasset , Stéphane Cordier , Franck Tessier","doi":"10.1016/j.solidstatesciences.2025.108154","DOIUrl":"10.1016/j.solidstatesciences.2025.108154","url":null,"abstract":"<div><div>Transition metal nitrides and oxynitrides exhibit catalytic properties that make them promising candidates as alternatives to noble metals. A series of high-surface-area chromium oxynitrides, CrO<sub>x</sub>N<sub>1-x</sub> (0.10 < x < 0.25), was synthesized from a cheap hydroxide precursor and investigated as unconventional heterogeneous catalysts for the Water-Gas Shift (WGS) reaction. Currently, this reaction is predominantly catalyzed by platinum. Replacing platinum with chromium oxynitrides could provide a more cost-effective and environmentally friendly solution.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"172 ","pages":"Article 108154"},"PeriodicalIF":3.3,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683439","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}
Features of the formation of isosbestic point (IP) on the curves of transverse magnetoresistance (TMR) were studied for several objects with different transport and magnetic properties, including narrow band semiconductor YbB5.96, heavy fermion compound Ce3Pd20Si6, antiferromagnet NdB6, magnetic Weyl semimetal with field-induced A-phase GdCoC2 and metallic system with isolated Ce impurity Ce0.01La0.99B6. Experimental study has been performed on high quality single crystals and polycrystalline samples at temperatures 1.8–300 K in magnetic fields up to 82 kOe. Along with usual IP (Tiso) we discovered a new effect, when Tiso turns out to be very close to the position of the inversion point (Tinv), which separates positive and negative regimes of TMR. The phenomenon, when two characteristic temperatures of different nature practically coincide, is very unusual and may be classified as a single temperature scale (inverse isosbestic point). A general approach, which relates inverse isosbestic point to several competing scattering mechanisms, is suggested and discussed.
{"title":"Isosbestic point formation on transverse magnetoresistance curves for strongly correlated quantum matter","authors":"M.A. Anisimov , A.V. Bogach , A.V. Semeno , A.V. Gribanov , A.V. Bokov , V.A. Sidorov , V.V. Glushkov , A.V. Tsvyashchenko","doi":"10.1016/j.solidstatesciences.2025.108156","DOIUrl":"10.1016/j.solidstatesciences.2025.108156","url":null,"abstract":"<div><div>Features of the formation of isosbestic point (IP) on the curves of transverse magnetoresistance (TMR) were studied for several objects with different transport and magnetic properties, including narrow band semiconductor YbB<sub>5.96</sub>, heavy fermion compound Ce<sub>3</sub>Pd<sub>20</sub>Si<sub>6</sub>, antiferromagnet NdB<sub>6</sub>, magnetic Weyl semimetal with field-induced A-phase GdCoC<sub>2</sub> and metallic system with isolated Ce impurity Ce<sub>0.01</sub>La<sub>0.99</sub>B<sub>6</sub>. Experimental study has been performed on high quality single crystals and polycrystalline samples at temperatures 1.8–300 K in magnetic fields up to 82 kOe. Along with usual IP (<em>T</em><sub>iso</sub>) we discovered a new effect, when <em>T</em><sub>iso</sub> turns out to be very close to the position of the inversion point (<em>T</em><sub>inv</sub>), which separates positive and negative regimes of TMR. The phenomenon, when two characteristic temperatures of different nature practically coincide, is very unusual and may be classified as a single temperature scale (inverse isosbestic point). A general approach, which relates inverse isosbestic point to several competing scattering mechanisms, is suggested and discussed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"172 ","pages":"Article 108156"},"PeriodicalIF":3.3,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683441","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}
Pub Date : 2025-12-02DOI: 10.1016/j.solidstatesciences.2025.108165
Pengmin Yan , Qiang Zhou , Rufei Qiao , Zhuwen Lyu , Longhai Zhong , Jinchao Qiao , Junbo Yan , Tianchu Wang , Peng Si
This study integrates molecular dynamics simulations with shock compression experiments to elucidate the hierarchical phase transition mechanisms of black phosphorus under extreme pressure conditions. By establishing a phase transformation pathway model (orthorhombic → rhombohedral → simple cubic phase), we quantitatively determined the phase transition thresholds at 38.7 GPa under both ambient and elevated temperatures, and achieved controllable preparation of simple cubic phase black phosphorus through shock loading. The material porosity mediated pressure attenuation effect was found to critically influence the phase transition initiation pressure, while microsecond-scale pressure release characteristics enabled metastable phase retention by suppressing reverse transition kinetics. Atomic-scale analysis demonstrates that three-dimensional hydrostatic pressure drives anisotropic bonding reconstruction, characterized by 78.6 % preferential compression along the b-axis and continuous bond-angle distortion from 103° to 90°, which collectively induce electron cloud rearrangement and symmetry breaking transition from layered to cubic configurations. The developed simulation-experiment dual-validation methodology provides new perspectives for high-pressure phase transition research, with the revealed phase nucleation reverse transition competition mechanism offering critical guidance for metastable material design.
{"title":"Threshold-controlled structural metamorphosis in black phosphorus under extreme conditions","authors":"Pengmin Yan , Qiang Zhou , Rufei Qiao , Zhuwen Lyu , Longhai Zhong , Jinchao Qiao , Junbo Yan , Tianchu Wang , Peng Si","doi":"10.1016/j.solidstatesciences.2025.108165","DOIUrl":"10.1016/j.solidstatesciences.2025.108165","url":null,"abstract":"<div><div>This study integrates molecular dynamics simulations with shock compression experiments to elucidate the hierarchical phase transition mechanisms of black phosphorus under extreme pressure conditions. By establishing a phase transformation pathway model (orthorhombic → rhombohedral → simple cubic phase), we quantitatively determined the phase transition thresholds at 38.7 GPa under both ambient and elevated temperatures, and achieved controllable preparation of simple cubic phase black phosphorus through shock loading. The material porosity mediated pressure attenuation effect was found to critically influence the phase transition initiation pressure, while microsecond-scale pressure release characteristics enabled metastable phase retention by suppressing reverse transition kinetics. Atomic-scale analysis demonstrates that three-dimensional hydrostatic pressure drives anisotropic bonding reconstruction, characterized by 78.6 % preferential compression along the b-axis and continuous bond-angle distortion from 103° to 90°, which collectively induce electron cloud rearrangement and symmetry breaking transition from layered to cubic configurations. The developed simulation-experiment dual-validation methodology provides new perspectives for high-pressure phase transition research, with the revealed phase nucleation reverse transition competition mechanism offering critical guidance for metastable material design.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"172 ","pages":"Article 108165"},"PeriodicalIF":3.3,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683440","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}
Pub Date : 2025-11-28DOI: 10.1016/j.solidstatesciences.2025.108153
Sai-Li Ding, Hui-Qing Liu, Xuan Zhang
Hg2+ is one of hazardous heavy metal ions that continuously threatens the human health. In this work, functional electrode materials were obtained by decorating conductive carbon black (VXC-72R) with formaldehyde crosslinked chitosan (HCHO-CS), and coated on glassy carbon electrode (GCE) to construct a novel electrochemical sensor (HCHO-CS/VXC-72R/GCE) for Hg2+. By taking advantage of the coordination interaction between Hg2+ and imine groups of HCHO-CS, a sensitive and selective electrochemical sensor for Hg2+ was developed based on the differential pulsed anodic stripping voltammetry (DPASV). The present sensor exhibited a wide linear region of 0.01–16.0 μM and a remarkably low detection limit of 0.607 nM. The practical feasibility of HCHO-CS/VXC-72R/GCE sensor was well demonstrated by successful Hg2+ determination application in the lake water and shrimp meat samples, with recovery rates of 89.00–101.20 %.
{"title":"A highly sensitive electrochemical sensor for Hg2+ based on crosslinked-chitosan/carbon black composites modified glassy carbon electrode","authors":"Sai-Li Ding, Hui-Qing Liu, Xuan Zhang","doi":"10.1016/j.solidstatesciences.2025.108153","DOIUrl":"10.1016/j.solidstatesciences.2025.108153","url":null,"abstract":"<div><div>Hg<sup>2+</sup> is one of hazardous heavy metal ions that continuously threatens the human health. In this work, functional electrode materials were obtained by decorating conductive carbon black (VXC-72R) with formaldehyde crosslinked chitosan (HCHO-CS), and coated on glassy carbon electrode (GCE) to construct a novel electrochemical sensor (HCHO-CS/VXC-72R/GCE) for Hg<sup>2+</sup>. By taking advantage of the coordination interaction between Hg<sup>2+</sup> and imine groups of HCHO-CS, a sensitive and selective electrochemical sensor for Hg<sup>2+</sup> was developed based on the differential pulsed anodic stripping voltammetry (DPASV). The present sensor exhibited a wide linear region of 0.01–16.0 μM and a remarkably low detection limit of 0.607 nM. The practical feasibility of HCHO-CS/VXC-72R/GCE sensor was well demonstrated by successful Hg<sup>2+</sup> determination application in the lake water and shrimp meat samples, with recovery rates of 89.00–101.20 %.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"172 ","pages":"Article 108153"},"PeriodicalIF":3.3,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145645618","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}
Pub Date : 2025-11-26DOI: 10.1016/j.solidstatesciences.2025.108152
Kashif Ali Kalhoro , Chi Zhang , Atiq Ur Rehman , Di Wu , Muhammad Anwar , Adil Khan , Dokyoon Kim , Mohammadreza Shokouhimehr , Zhengchun Liu
Reliable, high-quality glucose monitoring remains a significant challenge in the food industry, underscoring the need to develop cost-effective, high-performance glucose sensors. Herein, the CuCo(CN)6 nanocomposite was successfully synthesized at room temperature via a facile co-precipitation method and utilized as a non-enzymatic electrode for electrochemical glucose detection. Benefiting from its well-defined cyanide-bridged framework, CuCo(CN)6 exhibited exceptional electrocatalytic performance for glucose oxidation, achieving a high sensitivity of 1513.60 μA mM−1 cm−2, a broad linear range of 0.1–11 mM, and an ultralow detection limit of 0.45 μM. Moreover, it demonstrated a rapid response, excellent anti-interference capability, and stable operation over 16 days. Practical applicability was validated by determining glucose in commercial beverages (Black Tea, Pepsi, and Sprite; recoveries 94.44–103.70 %, RSD below 1.36 %) and human serum (recoveries 98.95–99.33 %, RSD not exceeding 1.04 %), demonstrating that CuCo(CN)6 is a robust, high-performance platform for real-time glucose monitoring in both food and biological samples.
{"title":"Nanostructured porous copper–cobalt hexacyanocobaltate coordination polymer: An efficient electrocatalyst for high-performance non-enzymatic glucose sensing","authors":"Kashif Ali Kalhoro , Chi Zhang , Atiq Ur Rehman , Di Wu , Muhammad Anwar , Adil Khan , Dokyoon Kim , Mohammadreza Shokouhimehr , Zhengchun Liu","doi":"10.1016/j.solidstatesciences.2025.108152","DOIUrl":"10.1016/j.solidstatesciences.2025.108152","url":null,"abstract":"<div><div>Reliable, high-quality glucose monitoring remains a significant challenge in the food industry, underscoring the need to develop cost-effective, high-performance glucose sensors. Herein, the CuCo(CN)<sub>6</sub> nanocomposite was successfully synthesized at room temperature via a facile co-precipitation method and utilized as a non-enzymatic electrode for electrochemical glucose detection. Benefiting from its well-defined cyanide-bridged framework, CuCo(CN)<sub>6</sub> exhibited exceptional electrocatalytic performance for glucose oxidation, achieving a high sensitivity of 1513.60 μA mM<sup>−1</sup> cm<sup>−2</sup>, a broad linear range of 0.1–11 mM, and an ultralow detection limit of 0.45 μM. Moreover, it demonstrated a rapid response, excellent anti-interference capability, and stable operation over 16 days. Practical applicability was validated by determining glucose in commercial beverages (Black Tea, Pepsi, and Sprite; recoveries 94.44–103.70 %, RSD below 1.36 %) and human serum (recoveries 98.95–99.33 %, RSD not exceeding 1.04 %), demonstrating that CuCo(CN)<sub>6</sub> is a robust, high-performance platform for real-time glucose monitoring in both food and biological samples.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"171 ","pages":"Article 108152"},"PeriodicalIF":3.3,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145622662","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}
Pub Date : 2025-11-26DOI: 10.1016/j.solidstatesciences.2025.108151
José Matheus Rodrigues Monteiro , Karolline Aparecida de Souza Araujo , Ângelo Malachias , Luiz Alberto Cury
Colloidal perovskite solutions of CsPbBr3 in oleic acid and oleylamine mixed in chlorobenzene solution of poly(methyl methacrylate) were used to produce blends with poly(3-hexylthiophene) (P3HT) and with Poly[2,5-bis(3’.7’-dimethyl-octyloxy)-1,4-phenylenevinylene] (BDMO-PPV) organic materials with the aim of studying the energy transfer effect between them. The energy transfer from perovskite donors to the conjugated polymer acceptor states in blended solutions was measured by steady-state and time-resolved photoluminescence. The increase of quantum efficiencies observed by the integration sphere method on the organic/inorganic blends studied, validate the objectives of the work, demonstrating that the photon recycling system from perovskites nanoparticles can be converted in a relatively good hybrid gain médium.
{"title":"Use of energy transfer effect to control photon recycling on organic–inorganic blends","authors":"José Matheus Rodrigues Monteiro , Karolline Aparecida de Souza Araujo , Ângelo Malachias , Luiz Alberto Cury","doi":"10.1016/j.solidstatesciences.2025.108151","DOIUrl":"10.1016/j.solidstatesciences.2025.108151","url":null,"abstract":"<div><div>Colloidal perovskite solutions of CsPbBr3 in oleic acid and oleylamine mixed in chlorobenzene solution of poly(methyl methacrylate) were used to produce blends with poly(3-hexylthiophene) (P3HT) and with Poly[2,5-bis(3’.7’-dimethyl-octyloxy)-1,4-phenylenevinylene] (BDMO-PPV) organic materials with the aim of studying the energy transfer effect between them. The energy transfer from perovskite donors to the conjugated polymer acceptor states in blended solutions was measured by steady-state and time-resolved photoluminescence. The increase of quantum efficiencies observed by the integration sphere method on the organic/inorganic blends studied, validate the objectives of the work, demonstrating that the photon recycling system from perovskites nanoparticles can be converted in a relatively good hybrid gain médium.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"171 ","pages":"Article 108151"},"PeriodicalIF":3.3,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145622578","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}
The current study involved in the synthesis of nickel ferrite (NiFe2O4) nanoparticles using the sol-gel auto-combustion method with citric acid employed as a fuel agent. Secondly, multi-walled carbon nanotubes (MWCNTs) were incorporated, involving toluene as a functionalizing agent. The X-ray diffraction (XRD) analysis verified the development of the structural characteristics of nanocomposites. Transmission electron microscopy (TEM) images shown the successful coating of MWCNTs onto the surface of the nanoparticle matrix. Fourier transform infrared spectroscopy (FTIR) was carried out to identify the tetra and octahedral band positions in the crystal lattice. The study investigated the dielectric characteristics such as dielectric constant, dielectric loss, tangent loss, impedance's as well as the real and imaginary components of electric modulus and AC conductivity within the frequency spectrum spanning from 1 MHz to 3 GHz. These all parameters are massively changed by the linkage between the MWCNTs with spinel nanoparticle (i.e. x = 5–25 %). The hysteresis loops have confirmed the soft magnetic nature of the nanocomposite, which were measured in the applied magnetic field from of −30 to 30 KOe. The decline in magnetic behaviour down to decreased with increasing the nonmagnetic MWCNTs nanostructures. The obtained soft magnetic nature as well as the improved dielectric properties at high frequency suggested that the prepared nanocomposites can be useful for soft magnetic and high frequency device applications.
{"title":"Dielectrically modified MWCNTs decorated nickle based spinel ferrites nanocomposites prepared via ultrasonic assisted route","authors":"Maryam Dildar , Wahab Ullah , Muhammad Khalid , Imed Boukhris , M.S. Alburiahi , Taharh Zelai , M.A. Gondal , M.G.B. Ashiq , Zahrah.S.A. Almutawah , Mehwish , Jaweria Yousuf","doi":"10.1016/j.solidstatesciences.2025.108137","DOIUrl":"10.1016/j.solidstatesciences.2025.108137","url":null,"abstract":"<div><div>The current study involved in the synthesis of nickel ferrite (NiFe<sub>2</sub>O<sub>4</sub>) nanoparticles using the sol-gel auto-combustion method with citric acid employed as a fuel agent. Secondly, multi-walled carbon nanotubes (MWCNTs) were incorporated, involving toluene as a functionalizing agent. The X-ray diffraction (XRD) analysis verified the development of the structural characteristics of nanocomposites. Transmission electron microscopy (TEM) images shown the successful coating of MWCNTs onto the surface of the nanoparticle matrix. Fourier transform infrared spectroscopy (FTIR) was carried out to identify the tetra and octahedral band positions in the crystal lattice. The study investigated the dielectric characteristics such as dielectric constant, dielectric loss, tangent loss, impedance's as well as the real and imaginary components of electric modulus and AC conductivity within the frequency spectrum spanning from 1 MHz to 3 GHz. These all parameters are massively changed by the linkage between the MWCNTs with spinel nanoparticle (i.e. x = 5–25 %). The hysteresis loops have confirmed the soft magnetic nature of the nanocomposite, which were measured in the applied magnetic field from of −30 to 30 KOe. The decline in magnetic behaviour down to decreased with increasing the nonmagnetic MWCNTs nanostructures. The obtained soft magnetic nature as well as the improved dielectric properties at high frequency suggested that the prepared nanocomposites can be useful for soft magnetic and high frequency device applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"171 ","pages":"Article 108137"},"PeriodicalIF":3.3,"publicationDate":"2025-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145622660","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}
The advancement of high-performance supercapacitor electrodes that deliver elevated energy density alongside exceptional cycling stability remains a pivotal goal in energy storage research. Hybrid nanocomposites, formed by integrating redox-active transition metal compounds with conductive, high-surface-area supports, represent a promising strategy to address these challenges by synergistically combining their advantageous properties. In this work, a Prussian Blue Analogue (PBA) derived cobalt telluride (CoTe)/graphitic carbon nitride (g-C3N4) hybrid composite was successfully synthesized via a controlled hydrothermal process followed by thermal annealing. The material was characterized extensively using FESEM, XRD, XPS, and EDS techniques, which confirmed the formation of an interconnected 3D cubic CoTe structure uniformly embedded within a conductive g-C3N4 nanoflake network. Electrochemical performance was evaluated using cyclic voltammetry and galvanostatic charge–discharge measurements in an alkaline electrolyte under a two-electrode system. The resulting PBA CoTe/g-C3N4 supercapacitor exhibited a remarkable specific capacitance of 354.79 F g−1 at 1 A g−1, impressive energy density, and outstanding cycling stability with over 89.47 % capacitance retention after 5000 cycles. The hierarchical porous architecture and uniform elemental distribution facilitated efficient ion diffusion, fast electron transport, and mitigated mechanical degradation during long-term operation. These combined features underscore the PBA CoTe/g-C3N4 hybrid composite as a potent and durable electrode candidate for next-generation supercapacitor devices.
高性能超级电容器电极的进步，提供更高的能量密度和卓越的循环稳定性，仍然是储能研究的关键目标。杂化纳米复合材料是将氧化还原活性过渡金属化合物与导电的高表面积载体相结合而形成的，是一种很有前途的策略，通过协同结合它们的优势特性来解决这些挑战。在本研究中，通过控制水热法和热退火法成功合成了普鲁士蓝类似物（PBA）衍生的碲化钴(CoTe)/石墨氮化碳（g-C3N4）杂化复合材料。利用FESEM、XRD、XPS和EDS技术对材料进行了广泛的表征，证实了在导电的g-C3N4纳米片网络中形成了一个相互连接的三维立方CoTe结构。采用循环伏安法和恒流充放电法对碱性电解液在双电极体系下的电化学性能进行了评价。所制备的PBA CoTe/g- c3n4超级电容器在1 a g−1下的比电容为354.79 F g−1，具有令人印象深刻的能量密度，并具有出色的循环稳定性，在5000次循环后电容保持率超过89.47%。分层多孔结构和均匀的元素分布促进了有效的离子扩散，快速的电子传递，并减轻了长期使用过程中的机械降解。这些综合特性强调了PBA CoTe/g-C3N4混合复合材料作为下一代超级电容器器件的有效且耐用的电极候选者。
{"title":"Interconnected 3D PBA CoTe/g-C3N4 hybrid nanocomposite as high performance supercapacitor material","authors":"Qamar Abuhassan , Ahmed Aldulaimi , Premkumar R , Badri Narayan Sahu , T. Gomathi , Gaganjot Kaur , Bekzod Matyakubov , Doniyor Jumanazarov , Omayma salim waleed , Rafid Jihad Albadr , Aseel Smerat","doi":"10.1016/j.solidstatesciences.2025.108147","DOIUrl":"10.1016/j.solidstatesciences.2025.108147","url":null,"abstract":"<div><div>The advancement of high-performance supercapacitor electrodes that deliver elevated energy density alongside exceptional cycling stability remains a pivotal goal in energy storage research. Hybrid nanocomposites, formed by integrating redox-active transition metal compounds with conductive, high-surface-area supports, represent a promising strategy to address these challenges by synergistically combining their advantageous properties. In this work, a Prussian Blue Analogue (PBA) derived cobalt telluride (CoTe)/graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) hybrid composite was successfully synthesized via a controlled hydrothermal process followed by thermal annealing. The material was characterized extensively using FESEM, XRD, XPS, and EDS techniques, which confirmed the formation of an interconnected 3D cubic CoTe structure uniformly embedded within a conductive g-C<sub>3</sub>N<sub>4</sub> nanoflake network. Electrochemical performance was evaluated using cyclic voltammetry and galvanostatic charge–discharge measurements in an alkaline electrolyte under a two-electrode system. The resulting PBA CoTe/g-C<sub>3</sub>N<sub>4</sub> supercapacitor exhibited a remarkable specific capacitance of 354.79 F g<sup>−1</sup> at 1 A g<sup>−1</sup>, impressive energy density, and outstanding cycling stability with over 89.47 % capacitance retention after 5000 cycles. The hierarchical porous architecture and uniform elemental distribution facilitated efficient ion diffusion, fast electron transport, and mitigated mechanical degradation during long-term operation. These combined features underscore the PBA CoTe/g-C<sub>3</sub>N<sub>4</sub> hybrid composite as a potent and durable electrode candidate for next-generation supercapacitor devices.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"171 ","pages":"Article 108147"},"PeriodicalIF":3.3,"publicationDate":"2025-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145622659","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}
Pub Date : 2025-11-21DOI: 10.1016/j.solidstatesciences.2025.108139
Feng-Jun Zhang , Zi-Chen Wang , Yu-Hong Niu , Jie Ma
For ultimate photocatalytic CO2 reduction efficiency, In2O3 synthesized via co-precipitation/calcination was architecturally integrated with Bi2MoO6 through solvothermal assembly, constructing composite catalysts. In2O3 incorporation triggered absorption edge red-shifting, quenched photoluminescence, and amplified photocurrent density. The 2 %-In2O3 composite delivered 12.5 μmol/g/h CO yield under 300W xenon lamp – achieving a 2.5-fold enhancement versus pure In2O3 and a 1.8-fold gain relative to pure Bi2MoO6. This superiority arose from heterostructuring induced by In2O3 loading, which expedited photogenerated carrier mobility and elevated CO2 conversion activity.
{"title":"Direct Z-scheme In2O3/Bi2MoO6 heterojunction: Efficient photocatalyst for CO2 reduction","authors":"Feng-Jun Zhang , Zi-Chen Wang , Yu-Hong Niu , Jie Ma","doi":"10.1016/j.solidstatesciences.2025.108139","DOIUrl":"10.1016/j.solidstatesciences.2025.108139","url":null,"abstract":"<div><div>For ultimate photocatalytic CO<sub>2</sub> reduction efficiency, In<sub>2</sub>O<sub>3</sub> synthesized via co-precipitation/calcination was architecturally integrated with Bi<sub>2</sub>MoO<sub>6</sub> through solvothermal assembly, constructing composite catalysts. In<sub>2</sub>O<sub>3</sub> incorporation triggered absorption edge red-shifting, quenched photoluminescence, and amplified photocurrent density. The 2 %-In<sub>2</sub>O<sub>3</sub> composite delivered 12.5 μmol/g/h CO yield under 300W xenon lamp – achieving a 2.5-fold enhancement versus pure In<sub>2</sub>O<sub>3</sub> and a 1.8-fold gain relative to pure Bi<sub>2</sub>MoO<sub>6</sub>. This superiority arose from heterostructuring induced by In<sub>2</sub>O<sub>3</sub> loading, which expedited photogenerated carrier mobility and elevated CO<sub>2</sub> conversion activity.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"171 ","pages":"Article 108139"},"PeriodicalIF":3.3,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578421","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}
Pub Date : 2025-11-19DOI: 10.1016/j.solidstatesciences.2025.108138
Takashi Ikeda
The Ar-irradiation effects on graphite thin film have been investigated using first-principles MD simulations. We introduced a novel damping medium to avoid artifacts due to periodic boundary conditions. This methodology allows to elucidate the detailed processes of the defect formation. We find that the irradiation of our graphite sample with 380 keV Ar tends to create di-vacancies in graphene sheets. This process is due to intralayer displacements of the C atom targeted by the incoming Ar. The inclusion of di-vacancies in the irradiated samples is proved by comparing our simulated Raman spectra with the experimental ones.
{"title":"Ar-irradiation effects on graphite thin film revealed from first-principles based simulations","authors":"Takashi Ikeda","doi":"10.1016/j.solidstatesciences.2025.108138","DOIUrl":"10.1016/j.solidstatesciences.2025.108138","url":null,"abstract":"<div><div>The Ar-irradiation effects on graphite thin film have been investigated using first-principles MD simulations. We introduced a novel damping medium to avoid artifacts due to periodic boundary conditions. This methodology allows to elucidate the detailed processes of the defect formation. We find that the irradiation of our graphite sample with 380 keV Ar tends to create di-vacancies in graphene sheets. This process is due to intralayer displacements of the C atom targeted by the incoming Ar. The inclusion of di-vacancies in the irradiated samples is proved by comparing our simulated Raman spectra with the experimental ones.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108138"},"PeriodicalIF":3.3,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145569174","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}
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