Journal of Physics and Chemistry of Solids最新文献_第5页

Thermoluminescence, electron paramagnetic resonance, and structural characterization of natural prehnite for high-dose radiation dosimetry 热释光，电子顺磁共振，以及用于高剂量辐射剂量测定的天然前驱石的结构表征

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-06 DOI: 10.1016/j.jpcs.2026.113519

Monise B. Gomes , Carlos D. Gonzales-Lorenzo , René R. Rocca , F.N. Ramirez , Edy E. Cuevas-Arizaca , Betzabel N. Silva-Carrera , T.K. Gundu Rao , Nilo F. Cano , Jose F.D. Chubaci

{"title":"Thermoluminescence, electron paramagnetic resonance, and structural characterization of natural prehnite for high-dose radiation dosimetry","authors":"Monise B. Gomes , Carlos D. Gonzales-Lorenzo , René R. Rocca , F.N. Ramirez , Edy E. Cuevas-Arizaca , Betzabel N. Silva-Carrera , T.K. Gundu Rao , Nilo F. Cano , Jose F.D. Chubaci","doi":"10.1016/j.jpcs.2026.113519","DOIUrl":"10.1016/j.jpcs.2026.113519","url":null,"abstract":"<div><div>Natural prehnite was evaluated as a thermoluminescence (TL) material for high-dose dosimetry. XRF identified SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, and CaO as major constituents. Prehnite samples annealed between 200 and 800 °C (1 h) were examined by XRD and Rietveld analysis, confirming prehnite as the majority phase and revealing calcite and vaterite after heating. The 600 °C sample provided the highest TL yield and was selected for detailed study. Fading tests showed a ∼40 % loss in the 240/350 °C peaks over 5.42 days (130 h), followed by signal stability. Dose–response demonstrated, for the 245 peak and 325 °C, a linear region in the 0.1–2 kGy and 0.5–20 kGy range, respectively, with saturation occurring between 30 and 100 kGy. Kinetic parameters were obtained using TM-Tstop, initial-rise, and variable-heating-rate methods; glow-curve deconvolution resolved five TL components. TL spectra display an intense band near 530 nm and a weak 550 nm band, suggesting two main recombination centers.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113519"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of a magnetically heatable ceria–supported ruthenium catalyst via deposition of nanocrystalline ceria on silica-coated magnetic iron–oxide nanoparticles 通过在二氧化硅包覆的磁性氧化铁纳米颗粒上沉积纳米晶二氧化铈合成一种磁性可加热二氧化铈负载钌催化剂

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-06 DOI: 10.1016/j.jpcs.2026.113517

Nina Križaj Kosi , Jakov-Stjepan Pavelić , Miha Grilc , Sašo Gyergyek , Darko Makovec

{"title":"Synthesis of a magnetically heatable ceria–supported ruthenium catalyst via deposition of nanocrystalline ceria on silica-coated magnetic iron–oxide nanoparticles","authors":"Nina Križaj Kosi , Jakov-Stjepan Pavelić , Miha Grilc , Sašo Gyergyek , Darko Makovec","doi":"10.1016/j.jpcs.2026.113517","DOIUrl":"10.1016/j.jpcs.2026.113517","url":null,"abstract":"<div><div>We report the synthesis of a ceria-based catalyst support containing embedded magnetic iron–oxide nanoparticles (IONPs) that enable heating under a high-frequency alternating magnetic field. The ≈11 nm IONPs, synthesized by co-precipitation of Fe<sup>2+</sup>/Fe<sup>3+</sup> ions at room temperature, were coarsened to ≈18 nm through subsequent hydrothermal treatment at 120 °C and then coated with a ≈2 nm silica layer. The catalyst support was prepared by depositing nanocrystalline ceria (CeO<sub>2</sub>) onto the IONPs via controlled precipitation of Ce<sup>3+</sup> ions in the presence of hexamethylenetetramine (HMTA) in aqueous suspension. When deposited directly on the iron oxide, ceria formed small agglomerates of ≈10 nm octahedral nanocrystallites, whereas deposition on silica-coated IONPs produced a homogeneous 3–6 nm-thick shell composed of ≈3 nm globular crystallites. Special attention was given to elucidating the mechanism of shell formation. The magnetic catalyst was obtained by precipitating Ru nanoparticles (1–2 nm) onto the ceria support. Morpho-structural characterization was performed by XRD, TEM, and aberration-corrected STEM. Static and dynamic magnetization measurements at room temperature were used to assess the magnetic and heating performance. At low field amplitudes (<15 mT), catalysts prepared with IONPs of both sizes exhibited similar specific absorption rates, whereas at higher amplitudes the larger IONPs demonstrated superior heating efficiency. The catalytic performance was demonstrated in the magnetically heated hydrogenation of the bio-based compound 5-(hydroxymethyl)furfural to 2,5-bis(hydroxymethyl)furan, showing high activity, 100 % selectivity, and excellent stability upon recycling.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113517"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Degradation of dye by cobalt-loaded metakaolin geopolymer microspheres in broad-pH region 载钴偏高岭土聚合物微球在宽ph区降解染料

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-13 DOI: 10.1016/j.jpcs.2026.113538

Qianru Zhao, Changwen Ma, Qiangwei Shi, Ruyan Li, Zhen Tian

{"title":"Degradation of dye by cobalt-loaded metakaolin geopolymer microspheres in broad-pH region","authors":"Qianru Zhao, Changwen Ma, Qiangwei Shi, Ruyan Li, Zhen Tian","doi":"10.1016/j.jpcs.2026.113538","DOIUrl":"10.1016/j.jpcs.2026.113538","url":null,"abstract":"<div><div>Developing efficient photo-Fenton catalytic systems represents a promising strategy for degrading organic pollutants in wastewater. In this study, cobalt-loaded metakaolin-based geopolymer microspheres (Co-GM) were successfully prepared using suspension solidification and solution impregnation methods, and their performance in catalytic degradation of various pollutants was systematically evaluated. Experimental results demonstrated that in the Co-GM photo-Fenton system, the degradation rate of Rhodamine B (RhB) with an initial concentration of 20 mg/L reached 92 % within 30 min. The system also exhibited high degradation efficiency for various pollutants, such as ciprofloxacin and azo mixed dyes. Compared with other photo-Fenton catalysts, Co-GM has excellent performance in maintaining over 90 % degradation efficiency across a wide pH range (5–11). Free radical quenching experiments further confirmed that the primary active species involved in the catalytic process were ·OH, ·O<sub>2</sub><sup>−</sup>, and h<sup>+</sup>, ·OH, ·O<sub>2</sub><sup>−</sup> and h<sup>+</sup> contribute 40 %, 60 % and 43 % respectively, with ·O<sub>2</sub><sup>−</sup> being predominant. Moreover, Co-GM showed excellent reusability in cyclic degradation experiments. This study provides new insights into the development of cost-effective, pH-tolerant, and highly stable photo-Fenton catalysts.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113538"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Trotter-Suzuki and Tight-Binding Time Propagation Method to calculate density of states and optical conductivity of non-metal doped graphitic heptazine carbon nitride 采用Trotter-Suzuki法和紧结合时间传播法计算了非金属掺杂石墨七嗪氮化碳的态密度和光电导率

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-13 DOI: 10.1016/j.jpcs.2026.113535

Jaysen Brian Susanto , Iman Santoso , Tzu-Jen Lin

{"title":"Using Trotter-Suzuki and Tight-Binding Time Propagation Method to calculate density of states and optical conductivity of non-metal doped graphitic heptazine carbon nitride","authors":"Jaysen Brian Susanto , Iman Santoso , Tzu-Jen Lin","doi":"10.1016/j.jpcs.2026.113535","DOIUrl":"10.1016/j.jpcs.2026.113535","url":null,"abstract":"<div><div>Graphitic heptazine carbon nitride (g-h-C<sub>3</sub>N<sub>4</sub>) has garnered significant interest as a UV–visible light-driven photocatalyst due to its high thermal stability and semiconductor-like properties, making it a promising eco-friendly material for pollutant degradation. To enhance its photocatalytic performance, various strategies have been explored, including the introduction of dopants (or co-dopants) with non-metal elements such as oxygen (O), sulfur (S), and phosphorus (P). Thus, determining the electronic and optical properties, such as the Density of States (DOS) and Optical Conductivity (OPC), may provide more valuable insights. This study adopts the Trotter-Suzuki and Tight-Binding Time Propagation Method (TS-TBTPM) for real-space analysis of the pristine and non-metal doped g-h-C<sub>3</sub>N<sub>4</sub> exceeding ∼1000000 atoms. Regarding our calculation results, the non-metal-doped g-h-C<sub>3</sub>N<sub>4</sub> exhibits the emergence of additional VHS (Van Hove Singularities) as mid-gap states in the DOS, and a significant alteration of the OPC profile through red shifts. Additionally, the TS-TBTPM exhibits better resolution in the calculated DOS and OPC compared to the density functional theory (DFT) calculation. Moreover, our studies elucidate how the combined effects of multiple dopant types influence material properties, explaining the synergistic effects observed in experiments. Therefore, our findings confirm that non-metal dopants effectively tune the electronic and optical properties of g-h-C<sub>3</sub>N<sub>4</sub>, emphasizing the potential for future photocatalyst applications and optoelectronic material design.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113535"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aurivillius-phase Bi4Ti3O12 nanoparticles structural, surface, and photocatalytic properties for advanced environmental applications aurivillius相Bi4Ti3O12纳米颗粒的结构，表面和光催化性能在先进的环境应用

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-17 DOI: 10.1016/j.jpcs.2026.113542

Malla Balakrishna , Bittu Singh , Channamsetti Sushma , Y. Subbareddy , D.V. Satish , M. GnanaKiran , T. Srinivasa Rao , Anchal Aneja , Ramu Boddepalli , Malla Ramanaiah

{"title":"Aurivillius-phase Bi4Ti3O12 nanoparticles structural, surface, and photocatalytic properties for advanced environmental applications","authors":"Malla Balakrishna , Bittu Singh , Channamsetti Sushma , Y. Subbareddy , D.V. Satish , M. GnanaKiran , T. Srinivasa Rao , Anchal Aneja , Ramu Boddepalli , Malla Ramanaiah","doi":"10.1016/j.jpcs.2026.113542","DOIUrl":"10.1016/j.jpcs.2026.113542","url":null,"abstract":"<div><div>Bi<sub>4</sub>Ti<sub>3</sub>O<sub>12</sub> (BIT) nanoparticles were successfully synthesized via a sol–gel method, with a well-defined orthorhombic Aurivillius structure and nanocrystallite sizes of 40–60 nm. Raman spectroscopy confirmed the presence of characteristic Ti–O and Bi–O vibrational modes, indicating octahedral distortion critical for functional properties. X-ray photoelectron spectroscopy (XPS) revealed Bi 4f peaks at 158.7 eV and 164.0 eV, confirming the Bi<sup>3+</sup> oxidation state, Ti 2p doublets at 458.5 eV and 464.2 eV corresponding to Ti<sup>4+</sup>, and an O 1s peak at 529.6 eV associated with lattice oxygen. Field-emission scanning electron microscopy (FESEM) showed nanoplate-like morphology with an average particle size of ∼270 nm and homogeneous elemental distribution. The BIT nanoparticles exhibited excellent visible-light photocatalytic activity, degrading ∼90 % of methylene blue within 120 min. The degradation followed pseudo-first-order kinetics, with rate constants decreasing from 0.1414 to 0.0363 min-1 as dye concentration increased. The combination of high crystallinity, chemical purity, nanoscale morphology, and strong photocatalytic performance highlights BIT nanoparticles as promising candidates for multifunctional applications including wastewater treatment, environmental remediation, photovoltaic devices, and ferroelectric memory technologies.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113542"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pb-free Sn-based bilayer perovskite heterojunctions enabling high-efficient tandem photovoltaics 无铅锡基双层钙钛矿异质结实现高效串联光伏

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-02-02 DOI: 10.1016/j.jpcs.2026.113572

Chinmay K. Gupta , Prem Prakash Singh , Manish Kumar Singh , Shiv Poojan Patel , Sumaiya Parveen , Vivek Chand , Madan Singh Chauhan , Dhirendra K. Chaudhary , Ravi S. Singh , Vidya Nand Singh , Vineet Kumar Singh

{"title":"Pb-free Sn-based bilayer perovskite heterojunctions enabling high-efficient tandem photovoltaics","authors":"Chinmay K. Gupta , Prem Prakash Singh , Manish Kumar Singh , Shiv Poojan Patel , Sumaiya Parveen , Vivek Chand , Madan Singh Chauhan , Dhirendra K. Chaudhary , Ravi S. Singh , Vidya Nand Singh , Vineet Kumar Singh","doi":"10.1016/j.jpcs.2026.113572","DOIUrl":"10.1016/j.jpcs.2026.113572","url":null,"abstract":"<div><div>The short-circuit current density (J<sub>SC</sub>) produced by a single-absorber-based solar cell is constrained by the bandgap of the absorber material. However, solar cells that utilize bilayer or trilayer absorbers have the potential to significantly enhance the J<sub>SC</sub>. In this study, we proposed and simulated Pb-free, Sn-based perovskite solar cells with various configurations, including single-layer absorber, bilayer absorbers, two-terminal (2T) monolithic, and four-terminal (4T) mechanically stacked tandem solar cells (TSCs) using SCAPS-1D. A single-layer absorber-based solar cell with the configuration FTO/SnO<sub>2</sub>/CsSn<sub>0·96</sub>Zn<sub>0·04</sub>Br<sub>3</sub>/PTAA yielded a J<sub>SC</sub> of 19.07 mA/cm<sup>2</sup> and a power conversion efficiency (PCE) of 23.41% after optimizing various input variables, including bulk doping density, front and back interface defect densities, and absorber thickness. In comparison, a bilayer absorber-based solar cell with the stack configuration FTO/SnO<sub>2</sub>/CsSnI<sub>1·85</sub>Br<sub>1·15</sub>/CsSn<sub>0·96</sub>Zn<sub>0·04</sub>Br<sub>3</sub>/PTAA demonstrated an improved J<sub>SC</sub> of 22.55 mA/cm<sup>2</sup>, an open-circuit voltage (V<sub>OC</sub>) of 1381.8 mV, a fill factor (FF) of 82.73%, and a PCE of 25.79%. Furthermore, the simulated 2T monolithic and 4T mechanically stacked TSCs produced PCEs of 37.10% and 37.21%, respectively. This paper suggests a promising pathway for the future fabrication of Pb-free Sn-based highly efficient bilayer perovskite/silicon 2T and 4T TSCs.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113572"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modification of zinc metal batteries with ethylene carbonate as an electrolyte additive 以碳酸乙烯为电解质添加剂改性锌金属电池

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-24 DOI: 10.1016/j.jpcs.2026.113558

Meizi Li , Yunhan Li , Changzhe Cui , Cuimei Zhao

引用次数: 0

Rod-supported flower-like Ga2O3@MoS2@C as anode for lithium-ion batteries with excellent performance 柱状花状Ga2O3@MoS2@C作为锂离子电池负极，具有优异的性能

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-23 DOI: 10.1016/j.jpcs.2026.113551

Ou Sha , Yana Guo , Yuxiang Yang , Lin Zhang , Gang You , Jinglei Ma , Chuandong Wang , Wenjing Tang

引用次数: 0

A comprehensive review of the WO3 and its composites for the removal of priority pollutant: Chlorophenols in wastewater treatment WO3及其复合材料在废水处理中去除优先污染物氯酚的研究进展

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-21 DOI: 10.1016/j.jpcs.2026.113552

Manmeet Kaur, Amit Dhir, Shilpi Verma

{"title":"A comprehensive review of the WO3 and its composites for the removal of priority pollutant: Chlorophenols in wastewater treatment","authors":"Manmeet Kaur, Amit Dhir, Shilpi Verma","doi":"10.1016/j.jpcs.2026.113552","DOIUrl":"10.1016/j.jpcs.2026.113552","url":null,"abstract":"<div><div>Rapid industrialization and insufficient wastewater management have led to the extensive occurrence of chlorophenols (CPs) in aquatic environments, where their persistence, toxicity, and bioaccumulation pose a significant threat to ecology and human health. This review entails tungsten oxide (WO<sub>3</sub>) and it's composites as visible light responsive photocatalysts for the degradation of mono-, di-, and trichlorophenols in water. Initially, the structural diversity, morphology control of WO<sub>3</sub>, and phase behaviour have been discussed while emphasizing how the crystal structure, bandgap, and nano-structuring affect light absorption, charge separation, and surface reactivity. Different synthesis routes, including sol-gel, hydrothermal, co-precipitation, green synthesis, and template-assisted techniques, are assessed in terms of the resulting textural, optical, and electronic properties that affect the photocatalytic efficiency of WO<sub>3</sub> and its composites. This review further highlights various modification strategies, including doping, co-catalyst hybridization, and Z-scheme heterojunction formation, highlighting their roles in enhancing radical generation, suppressing electron-hole recombination, and extending the visible light response. Further emphasis is directed towards operational parameters and the role of key reactive oxygen species in degradation pathways, as well as the efficiency of the composites in the mineralization of the cholorophenols. Finally, detailed mechanistic insights including the identification of intermediates formed, and ring opening routes are discussed, guiding the rational design of next-generation WO<sub>3</sub>-based photocatalysts for efficient remediation of chlorophenol - contaminated water.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113552"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering sponge-like MoS2@Co(OH)2 hybrid structures as efficient non-precious metal catalysts for overall alkaline water splitting 工程类海绵MoS2@Co(OH)2杂化结构作为高效非贵金属催化剂用于碱性水的整体分解

IF 4.9 3区材料科学

Journal of Physics and Chemistry of Solids Pub Date : 2026-05-01 Epub Date: 2026-01-12 DOI: 10.1016/j.jpcs.2026.113533

Hafiz Muhammad Naeem , Muhammad Adeel Tariq , Giedrius Stalnionis , Muhammad Abdul Basit , Loreta Tamašauskaitė-Tamašiūnaitė , Eugenijus Norkus , Ramūnas Levinas

{"title":"Engineering sponge-like MoS2@Co(OH)2 hybrid structures as efficient non-precious metal catalysts for overall alkaline water splitting","authors":"Hafiz Muhammad Naeem , Muhammad Adeel Tariq , Giedrius Stalnionis , Muhammad Abdul Basit , Loreta Tamašauskaitė-Tamašiūnaitė , Eugenijus Norkus , Ramūnas Levinas","doi":"10.1016/j.jpcs.2026.113533","DOIUrl":"10.1016/j.jpcs.2026.113533","url":null,"abstract":"<div><div>Efficient and durable catalysts are essential for sustainable energy conversion via electrochemical water splitting. MoS<sub>2</sub> is a promising candidate with abundant hydrogen adsorption sites, but its limited water dissociation kinetics hinder HER in alkaline media. Conversely, Co(OH)<sub>2</sub> exhibits superior water dissociation performance, but lacks hydrogen adsorption activity. To address these limitations, we present a top-down electrochemical synthesis approach for a porous MoS<sub>2</sub>@Co(OH)<sub>2</sub> hybrid structure, enabling synergistic performance for bifunctional water splitting. SEM reveals a sponge-like morphology that facilitates mass transport and electrolyte accessibility. Hydrogen evolution requires only an overpotential of 226 mV to reach 10 mA/cm<sup>2</sup>, due to the complementary roles of MoS<sub>2</sub> in facilitating hydrogen adsorption/recombination and Co(OH)<sub>2</sub> in accelerating water dissociation. XPS confirms Mo<sup>4+</sup>/Mo<sup>6+</sup> and M-O-S species that can synergistically enhance adsorption-desorption. For OER, the hybrid catalyst reaches an overpotential of 341 mV at 10 mA/cm<sup>2</sup>, with excellent stability over 24 h. In overall water splitting, the Faradaic efficiencies were 94 % for H<sub>2</sub> and 96 % for O<sub>2</sub>. The cell voltage of 1.86V for <span><span>M0.6@C1</span><svg><path></path></svg></span> ||M1@C1 accentuates MoS<sub>2</sub>@Co(OH)<sub>2</sub> as a promising bifunctional electrocatalyst. The design strategy presented herein unveils a broadly applicable approach for designing hybrid surface architectures via electrochemical top-down synthesis for advanced energy conversion systems.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"212 ","pages":"Article 113533"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0