Journal of Solid State Chemistry最新文献

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Construction of highly efficient heterojunction photoanode Vo-Co3O4/Fe2O3 rich in oxygen vacancies for photoelectrochemical water splitting 高效富氧空位的Vo-Co3O4/Fe2O3异质结光电阳极的构建
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-30 DOI: 10.1016/j.jssc.2025.125618
Lijing Zhang , Xihang Zhou , Shasha Yi , Yiyao Zhu , Rui Ding , Yuqi Ji , Yang Sun , Xiao Cheng , Yanting Hu , Tao Hu , Mei Wu
{"title":"Construction of highly efficient heterojunction photoanode Vo-Co3O4/Fe2O3 rich in oxygen vacancies for photoelectrochemical water splitting","authors":"Lijing Zhang ,&nbsp;Xihang Zhou ,&nbsp;Shasha Yi ,&nbsp;Yiyao Zhu ,&nbsp;Rui Ding ,&nbsp;Yuqi Ji ,&nbsp;Yang Sun ,&nbsp;Xiao Cheng ,&nbsp;Yanting Hu ,&nbsp;Tao Hu ,&nbsp;Mei Wu","doi":"10.1016/j.jssc.2025.125618","DOIUrl":"10.1016/j.jssc.2025.125618","url":null,"abstract":"<div><div>Seeking effective strategies to enhance the photoelectrochemical O<sub>2</sub> evolution activity of Fe<sub>2</sub>O<sub>3</sub> photoanode remains a significant challenge due to poor conductivity, rapid recombination of photogenerated charge carriers and sluggish oxygen generation kinetics. Herein, we report the construction of a highly efficient heterojunction photoanode of Vo-Co<sub>3</sub>O<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> with rich oxygen vacancies via a combination of electrodeposition and solvothermal methods. The heterojunction formed between Co<sub>3</sub>O<sub>4</sub> and Fe<sub>2</sub>O<sub>3</sub> could effectively improves the separation efficiency and transfer process of photogenerated charge carriers. Additionally, the oxygen vacancies subsequently introduced by solvent heat treatment could improve the conductivity and lower the oxygen overpotential. As a result, the photocurrent density of Vo-Co<sub>3</sub>O<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> photoanode is up to 7.17 mA cm<sup>−2</sup> at 1.23 vs. RHE, which is 358 times higher than that of pristine Fe<sub>2</sub>O<sub>3</sub> photoanode (0.02 mA cm<sup>−2</sup>). This substantial enhancement in PEC O<sub>2</sub> evolution activity can be attributed to the synergistic effect of heterojunction construction and the introduction of oxygen vacancies.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125618"},"PeriodicalIF":3.5,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932646","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
Hollow Fe–Co hydroxide nanotube as an electrocatalyst for an improved neutral oxygen evolution reaction 空心氢氧化铁纳米管作为电催化剂用于改进中性析氧反应
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-30 DOI: 10.1016/j.jssc.2025.125619
Li Yu, Qin Liang
{"title":"Hollow Fe–Co hydroxide nanotube as an electrocatalyst for an improved neutral oxygen evolution reaction","authors":"Li Yu,&nbsp;Qin Liang","doi":"10.1016/j.jssc.2025.125619","DOIUrl":"10.1016/j.jssc.2025.125619","url":null,"abstract":"<div><div>Investigations into efficient and cost-effective catalysts for the electrochemical water oxidation have garnered significant attention. Therefore, the electrocatalyst Fe–Co hydroxide nanotube (Fe–Co–HO-NT) was synthesized via a straightforward hydrothermal method and its potential as an oxygen evolution reaction (OER) catalyst in a neutral medium was systematically evaluated. Among the samples, the Fe–Co–HO-NT-6 product synthesized over a 6-h period exhibits superior electrocatalytic performance in water oxidation. This enhanced performance can be primarily attributed to several favorable characteristics of the material, including its relatively high specific surface area, excellent electrical conductivity, and the presence of abundant active sites. The experimental results demonstrate that the developed oxygen-evolving electrocatalyst, Fe–Co–HO-NT-6 h, exhibits superior catalytic performance and achieves a current density of 10 mA/cm<sup>2</sup> at an exceptionally low overpotential of merely 476 mV. This research offers a novel reference for the development of high-performance electrochemical water oxidation catalysts.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125619"},"PeriodicalIF":3.5,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921174","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
Phase evolution governed by phosphorization thermodynamics enabling an integrated NiS/NiP2 electrode with enhanced pseudocapacitive performance 由磷酸化热力学控制的相演化使集成的NiS/NiP2电极具有增强的伪电容性能
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-29 DOI: 10.1016/j.jssc.2025.125615
Siyu Bi , Sirong Chen , Junyi Zhang , Hui Li , Zhengqiang Xia , Qi Yang , Gang Xie , Sanping Chen
{"title":"Phase evolution governed by phosphorization thermodynamics enabling an integrated NiS/NiP2 electrode with enhanced pseudocapacitive performance","authors":"Siyu Bi ,&nbsp;Sirong Chen ,&nbsp;Junyi Zhang ,&nbsp;Hui Li ,&nbsp;Zhengqiang Xia ,&nbsp;Qi Yang ,&nbsp;Gang Xie ,&nbsp;Sanping Chen","doi":"10.1016/j.jssc.2025.125615","DOIUrl":"10.1016/j.jssc.2025.125615","url":null,"abstract":"<div><div>Transition metal sulfides (TMSs) and phosphides (TMPs) composites are considered promising electrode materials for pseudocapacitive energy storage due to their high energy storage capacity and rapid charge/discharge kinetics. However, the precise and efficient synthesis of well-integrated TMSs/TMPs heterostructures remains a significant challenge, primarily due to the competitive coordination behavior between sulfur and phosphorus atoms during their reaction with transition metals. In this study, Ni<sub>9</sub>S<sub>8</sub> was employed as a precursor, and through precisely controlling the phosphorization temperature (490–570 °C), phosphorus source (NaH<sub>2</sub>PO<sub>2</sub>), and reaction time (1 h), a one-step synthesis of an integrated NiS/NiP<sub>2</sub> electrode was successfully achieved. Comprehensive experimental investigations reveal that the selection of an optimal temperature range is critical that temperatures below 490 °C impede phosphorus diffusion, while temperatures above 570 °C promote the undesired formation of NiO due to reactions with oxygen-containing intermediates generated during the decomposition of the phosphorus source. Electrochemical analyses demonstrate that the resulting NiS/NiP<sub>2</sub> composite exhibits a specific capacitance of 1721.8 F g<sup>−1</sup> at 1 A g<sup>−1</sup>, outperforming most previously reported TMSs and TMPs-based electrodes. Furthermore, the fabricated NiS/NiP<sub>2</sub>//NC asymmetric supercapacitor delivers an energy density of up to 89.41 Wh kg<sup>−1</sup> at a power density of 749.60 W kg<sup>−1</sup> and retains 91.32 % of its initial capacitance after 10,000 cycles at 1 A g<sup>−1</sup>, indicating excellent cycling stability. This work provides valuable experimental insights into phosphorization conditions for the development of integrated sulfide-phosphide electrode materials with enhanced electrochemical performance.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125615"},"PeriodicalIF":3.5,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917954","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
Enhancing the optoelectronic properties and performance of lead-based quasi-two-dimensional Ruddlesden–Popper perovskites through partial substitution of lead with cadmium for solar cells 用镉部分取代铅,提高铅基准二维Ruddlesden-Popper钙钛矿的光电性能
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-29 DOI: 10.1016/j.jssc.2025.125616
Aboubacar Traore , Mohammadreza Hosseini , Xing Li , Jiahong Pan , Xuepeng Liu , Songyuan Dai , Molang Cai
{"title":"Enhancing the optoelectronic properties and performance of lead-based quasi-two-dimensional Ruddlesden–Popper perovskites through partial substitution of lead with cadmium for solar cells","authors":"Aboubacar Traore ,&nbsp;Mohammadreza Hosseini ,&nbsp;Xing Li ,&nbsp;Jiahong Pan ,&nbsp;Xuepeng Liu ,&nbsp;Songyuan Dai ,&nbsp;Molang Cai","doi":"10.1016/j.jssc.2025.125616","DOIUrl":"10.1016/j.jssc.2025.125616","url":null,"abstract":"<div><div>Lead-based quasi-two-dimensional (2DRP) perovskites are known for their tunable optoelectronic properties, high moisture resistance, and environmental stability. However, these perovskites exhibit a wide band gap (Eg), low visible light absorption, and high exciton binding energy, which limits charge mobility and results in low photovoltaic efficiency. To address these issues, we propose a strategy involving butylammonium (BA) and methylammonium (MA) cations in the chemical formula BA<sub>2</sub>(MA)(Cd<sub>x</sub>Pb<sub>(1-x)</sub>)<sub>2</sub>I<sub>7</sub>, where partial substitution of lead (Pb) with cadmium (Cd) is used to adjust the band gap and improve the optoelectronic properties. Using first-principles calculations, our results show that Cd incorporation induces a transition from orthorhombic to monoclinic crystal structure. This transition reduces the distances between the inorganic layers, while the hybridisation of the 6s orbitals of lead and the 5s orbitals of cadmium leads to a progressive decrease in Eg, from 2.19 eV (pure Pb) to 1.81 eV (x = 0.25) and 1.55 eV (x = 0.5), thus enhancing visible light absorption. Additionally, reflectivity decreases from 24 % to 17 %, along with a reduction in exciton binding energy and effective mass, thus facilitating charge transport. The optimised composition, BA<sub>2</sub>(MA)(Pb <span><math><mrow><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></math></span> Cd<span><math><mrow><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></math></span>)<sub>2</sub>I<sub>7</sub>, with a thickness of less than 10 μm, achieved a short-circuit current density (Jsc) of 27 mA/cm<sup>2</sup> and a maximum light-to-electricity conversion efficiency (SLME) of 30 %, surpassing the pure lead-based perovskite (SLME 19 %, Jsc 11 mA/cm<sup>2</sup>). These results suggest that partial substitution of lead with cadmium in 2DRP perovskites is a promising strategy for enhancing photovoltaic performance and developing efficient and stable perovskite solar cells.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125616"},"PeriodicalIF":3.5,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921175","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
Magnetic ordering of Tb3Ni8Ga and Tb3Ni6Ga2 Tb3Ni8Ga和Tb3Ni6Ga2的磁有序
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-28 DOI: 10.1016/j.jssc.2025.125613
Sudhindra Rayaprol , Rohan Kamble , S. Quezado , S.K. Malik , Jinlei Yao , A.V. Knotko , V.O. Yapaskurt , A.V. Morozkin
{"title":"Magnetic ordering of Tb3Ni8Ga and Tb3Ni6Ga2","authors":"Sudhindra Rayaprol ,&nbsp;Rohan Kamble ,&nbsp;S. Quezado ,&nbsp;S.K. Malik ,&nbsp;Jinlei Yao ,&nbsp;A.V. Knotko ,&nbsp;V.O. Yapaskurt ,&nbsp;A.V. Morozkin","doi":"10.1016/j.jssc.2025.125613","DOIUrl":"10.1016/j.jssc.2025.125613","url":null,"abstract":"<div><div>The CeNi<sub>3</sub>-type Tb<sub>3</sub>Ni<sub>8</sub>Ga and Ce<sub>3</sub>Ni<sub>6</sub>Si<sub>2</sub>-type Tb<sub>3</sub>Ni<sub>6</sub>Ga<sub>2</sub> have been synthesized by arc melting under argon atmosphere followed by annealing. Tb<sub>3</sub>Ni<sub>8</sub>Ga is ferromagnet with <em>T</em><sub>C</sub> = 37 K accompanied by field sensitive antiferromagnetic-like transformation at lower temperature, while Tb<sub>3</sub>Ni<sub>6</sub>Ga<sub>2</sub> is field insensitive ferromagnet with <em>T</em><sub>C</sub> = 72 K. Down to 10 K it is soft ferromagnet, while Tb<sub>3</sub>Ni<sub>8</sub>Ga exhibits permanent magnet properties at 5 K. Around Curie temperatures, Tb<sub>3</sub>Ni<sub>8</sub>Ga and Tb<sub>3</sub>Ni<sub>6</sub>Ga<sub>2</sub> demonstrate an isothermal magnetic entropy change (Δ<em>S</em><sub>m</sub><sup>50kOe</sup>) of −8.9 J/kg⋅K and −5.7 J/kg⋅K (field change of 50 kOe), respectively. Neutron diffraction study in zero applied magnetic field shows colinear ferromagnetic ordening of Tb<sub>3</sub>Ni<sub>6</sub>Ga<sub>2</sub> (wave vector <strong>K</strong><sub>0</sub> = [0, 0, 0]) below <em>T</em><sub>C</sub> and down 3 K with magnetic moment per Tb of 8.11 μ<sub>B</sub> at 3 K.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125613"},"PeriodicalIF":3.5,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911690","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
Core-shell Fe3O4@mesoporous carbon composite for tetracycline degradation via peroxymonosulfate activation 核-壳Fe3O4@mesoporous碳复合材料通过过氧单硫酸盐活化降解四环素
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-28 DOI: 10.1016/j.jssc.2025.125614
Shichun Gu , Caiying Xia , Yapeng He , Hui Huang , Xue Wang
{"title":"Core-shell Fe3O4@mesoporous carbon composite for tetracycline degradation via peroxymonosulfate activation","authors":"Shichun Gu ,&nbsp;Caiying Xia ,&nbsp;Yapeng He ,&nbsp;Hui Huang ,&nbsp;Xue Wang","doi":"10.1016/j.jssc.2025.125614","DOIUrl":"10.1016/j.jssc.2025.125614","url":null,"abstract":"<div><div>Peroxymonosulfate (PMS) as a powerful oxidant could produce multiple radicals. Due to the advantages of easy recovery and separation, magnetic Fe<sub>3</sub>O<sub>4</sub> can be regarded as heterogeneous catalyst in PMS activation for pollutants treatment. However, the intrinsic properties of agglomeration and metal ion leaching limit the further utilization. To promote the catalytic efficiency and stability of Fe<sub>3</sub>O<sub>4</sub> catalyst, core-shell Fe<sub>3</sub>O<sub>4</sub>@mesoporous carbon (Fe<sub>3</sub>O<sub>4</sub>@MC) composite is prepared to eliminate tetracycline (TC) via PMS activation. Fe<sub>3</sub>O<sub>4</sub>@MC exhibits obviously spherical morphology, mesoporous structural with the mean particles size and surface area of 280 nm and 212.95 m<sup>2</sup> g<sup>−1</sup>. In Fe<sub>3</sub>O<sub>4</sub>@MC/PMS system, the synergistic interaction of MC shell and inner Fe<sub>3</sub>O<sub>4</sub> core results in significantly improvement of the catalytic performance. The effect of important factors including catalyst dose and type, PMS dosage, TC concentration, pH of solution, temperature, co-existing anions and water matrices on degradation process are evaluated. As a result, Fe<sub>3</sub>O<sub>4</sub>@MC delivers a considerable degradation efficiency of 75.9 % for TC within 60 min, and the cycle efficiency can maintain 87.6 % after five consecutive cycles. PMS activation mechanism including radicals and nonradical pathways is proposed and contributes to the degradation of TC. The remarkable Fe<sub>3</sub>O<sub>4</sub>@MC composite would promote the development of catalysts for TC degradation and present favorable prospectives in wastewater treatment.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125614"},"PeriodicalIF":3.5,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919837","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
Pioneering sulfophosphite crystals: Co-assembly of phosphite and sulfate units in novel inorganic architectures 开创性的亚磷酸酯晶体:亚磷酸酯和硫酸盐单位在新型无机结构中的共组装
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-28 DOI: 10.1016/j.jssc.2025.125601
Zong-Jie Zhao , Fu-Xing Lin , Kun Hu , Chang-Yuan He , Shufeng Yan , Wang-Chuan Xiao , Jian-Han Zhang
{"title":"Pioneering sulfophosphite crystals: Co-assembly of phosphite and sulfate units in novel inorganic architectures","authors":"Zong-Jie Zhao ,&nbsp;Fu-Xing Lin ,&nbsp;Kun Hu ,&nbsp;Chang-Yuan He ,&nbsp;Shufeng Yan ,&nbsp;Wang-Chuan Xiao ,&nbsp;Jian-Han Zhang","doi":"10.1016/j.jssc.2025.125601","DOIUrl":"10.1016/j.jssc.2025.125601","url":null,"abstract":"<div><div>Compounds [Ln(HPO<sub>3</sub>)[S<sub>0.5</sub>(OH)<sub>4</sub>] (Ln = La, Ce) and La[HPO<sub>2</sub>(OH)]SO<sub>4</sub>·H<sub>2</sub>O represent the first reported examples of sulfophosphite materials constructed through the co-assembly of HPO<sub>3</sub> and SO<sub>4</sub> building units. The structures of Ln(HPO<sub>3</sub>)[S<sub>0.5</sub>(OH)<sub>4</sub>] (Ln = La, Ce) feature 2D anionic Ln–P–O layers, composed of 1D Ln–O chains bridged by HPO<sub>3</sub> units, which are further linked by S(OH)<sub>4</sub> tetrahedra to form its 3D framework. La[HPO<sub>2</sub>(OH)]SO<sub>4</sub>·H<sub>2</sub>O consists of 1D La–S–O chains formed by La<sub>2</sub>O<sub>14</sub> dimers and SO<sub>4</sub> tetrahedra, which are further extended into a three-dimensional network via HPO<sub>2</sub>(OH) linkers. The partial occupancy of sulfur sites in Ln(HPO<sub>3</sub>)[S<sub>0.5</sub>(OH)<sub>4</sub>] (Ln = La, Ce) was validated by energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. Optical properties investigated through diffuse reflectance spectroscopy, combined with Urbach tail fitting and Tauc plot analysis, revealed that all three compounds exhibit direct band gaps of 4.53, 4.55, and 4.49 eV, respectively. This work not only broadens the structural and compositional diversity of phosphite-based materials but also provides a novel design strategy for the development of functional sulfophosphites with tunable properties.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125601"},"PeriodicalIF":3.5,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919850","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
Influence of microstructural and crystal structure defects on ionic transport in Ag7+x(P1-xGex)S6 ceramics Ag7+x(P1-xGex)S6陶瓷中微结构和晶体结构缺陷对离子传输的影响
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-27 DOI: 10.1016/j.jssc.2025.125611
Artem Pogodin , Mykhailo Filep , Tetyana Malakhovska , Vasyl Vakulchak , Vladimir Komanicky , Serhii Vorobiov , Iryna Shender , Vitaliy Bilanych , Oleksandr Kokhan , Ruslan Mariychuk
{"title":"Influence of microstructural and crystal structure defects on ionic transport in Ag7+x(P1-xGex)S6 ceramics","authors":"Artem Pogodin ,&nbsp;Mykhailo Filep ,&nbsp;Tetyana Malakhovska ,&nbsp;Vasyl Vakulchak ,&nbsp;Vladimir Komanicky ,&nbsp;Serhii Vorobiov ,&nbsp;Iryna Shender ,&nbsp;Vitaliy Bilanych ,&nbsp;Oleksandr Kokhan ,&nbsp;Ruslan Mariychuk","doi":"10.1016/j.jssc.2025.125611","DOIUrl":"10.1016/j.jssc.2025.125611","url":null,"abstract":"<div><div>Ag<sub>7+x</sub>(P<sub>1-x</sub>Ge<sub>x</sub>)S<sub>6</sub>-based superionic ceramic materials were prepared from microcrystalline powders. The phase composition and crystal structure of microcrystalline Ag<sub>7+x</sub>(P<sub>1-x</sub>Ge<sub>x</sub>)S<sub>6</sub> powders were investigated by XRD method. Ceramics were prepared by cold pressing with following annealing. The microstructure, elemental composition, microhardness and electrical properties of prepared Ag<sub>7+x</sub>(P<sub>1-x</sub>Ge<sub>x</sub>)S<sub>6</sub>-based ceramic materials have been examined. Ceramics of Ag<sub>7+x</sub>(P<sub>1-x</sub>Ge<sub>x</sub>)S<sub>6</sub> solid solutions with x = 0.1, 0.25, 0.33, 0.5, 0.75 demonstrated a sharp increase of ionic conductivity and a decrease in its activation energy compared to initial Ag<sub>7</sub>PS<sub>6</sub> and Ag<sub>8</sub>GeS<sub>6</sub>. The maximum value of the ionic conductivity (4.29 × 10<sup>−2</sup> S/cm) is observed for composition Ag<sub>7.5</sub>P<sub>0.5</sub>Ge<sub>0.5</sub>S<sub>6</sub>. The electronic conductivity is not significant and is within 10<sup>−6</sup> – 10<sup>−8</sup> S/cm.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125611"},"PeriodicalIF":3.5,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911689","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
A hierarchically porous MOF engineered via chelation-etching for high-capacity selective dye adsorption 一种通过螯合蚀刻设计的分层多孔MOF,用于高容量选择性染料吸附
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-27 DOI: 10.1016/j.jssc.2025.125609
Yuting Yang, Yu Yang, Xiaoman Zhang, Lingxue Li, Jiaojiao Yang, Lin Zhang, Yabing He, Dian Zhao
{"title":"A hierarchically porous MOF engineered via chelation-etching for high-capacity selective dye adsorption","authors":"Yuting Yang,&nbsp;Yu Yang,&nbsp;Xiaoman Zhang,&nbsp;Lingxue Li,&nbsp;Jiaojiao Yang,&nbsp;Lin Zhang,&nbsp;Yabing He,&nbsp;Dian Zhao","doi":"10.1016/j.jssc.2025.125609","DOIUrl":"10.1016/j.jssc.2025.125609","url":null,"abstract":"<div><div>Porous metal-organic frameworks (MOFs) are attractive candidates for selective adsorption of water pollutants due to abundant functional groups and tunable electrical properties, yet their microporous nature limits the maximum adsorption capacity. While larger-pore MOFs face synthetic, cost and stability constraints, hierarchically porous architectures offer promising solutions. This work reports a chelation-etching strategy to convert microporous MIL-53(Fe) into a hierarchically porous composite (MIL-53(Fe)@EDTA·2H) using 100 mM HCl/EDTA. The etched framework owns hierarchical porosity (5–50 Å), where mesopores coexist with preserved micropores. Compared to pristine MIL-53(Fe), the composite exhibits enhanced adsorption amount for cationic dyes in mixed systems, attributed to the electrostatic interactions and improved pore volumes. MIL-53(Fe)@EDTA·2H achieves a methylene blue (MB) adsorption capacity of 196.72 mg g<sup>−1</sup>, which is approximately twice that of the parent MOF. To mitigate adsorbent leaching during recovery, polyvinylidene fluoride (PVDF) mixed matrix membranes (MIL-53(Fe)@EDTA·2H·M) were fabricated, effectively immobilizing particles while maintaining performance. This study establishes a controlled etching approach for engineering hierarchical porosity in MOFs and demonstrates their utility as ideal adsorbents of both high adsorption capacity and selectivity.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125609"},"PeriodicalIF":3.5,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907114","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
Construction of TiO2 nanotube array films modified with ultra-small BiOI nanoparticles and their photocatalytic oxidation activity 超小BiOI纳米粒子修饰TiO2纳米管阵列膜的构建及其光催化氧化活性研究
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-26 DOI: 10.1016/j.jssc.2025.125604
Shuo Han , Jiyu Meng , Liang Hao , Te Hu , Sujun Guan , Yun Lu
{"title":"Construction of TiO2 nanotube array films modified with ultra-small BiOI nanoparticles and their photocatalytic oxidation activity","authors":"Shuo Han ,&nbsp;Jiyu Meng ,&nbsp;Liang Hao ,&nbsp;Te Hu ,&nbsp;Sujun Guan ,&nbsp;Yun Lu","doi":"10.1016/j.jssc.2025.125604","DOIUrl":"10.1016/j.jssc.2025.125604","url":null,"abstract":"<div><div>BiOI/TiO<sub>2</sub> heterojunction films were prepared on the surface of titanium wire mesh by anodic oxidation combined with a modified successive ionic layer adsorption and reaction (SILAR) method. The absorption of visible light and even near-infrared light by the films was significantly enhanced, and the optical bandgap values of the films were correspondingly reduced to varying degrees. Results from photoelectric current tests, electrochemical impedance spectroscopy, and photoluminescence spectroscopy showed that the formation of the BiOI/TiO<sub>2</sub> heterojunction not only greatly improved the absorption and utilization of solar light, promoted the separation and transfer of photogenerated charge carriers, but also effectively inhibited the recombination of photogenerated charge carriers. Photocatalytic degradation tests of RhB dye indicated that the formation of the BiOI/TiO<sub>2</sub> heterojunction enhanced the performance of the TiO<sub>2</sub> nanotube array films by up to tenfold. In this process, photogenerated holes and superoxide radicals played the most important roles. The BiOI/TiO<sub>2</sub> heterojunction films could also efficiently degrade ethylene gas. In our self-made photocatalytic ethylene degradation system, the films could degrade approximately 87 % of ethylene with an initial concentration of 15 ppm within 600 min. The final degradation products included CO<sub>2</sub>.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125604"},"PeriodicalIF":3.5,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917952","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
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