Pub Date : 2025-01-25DOI: 10.1016/j.jssc.2025.125217
Tobias Niederkofler , Aldo Giovannini , Roman Lackner
Magnesium sulfate is a promising material for thermochemical energy storage, particularly in low-temperature residential applications. However, rising water vapor pressures during dehydration can affect reaction efficiency and material stability in an open storage system. This study investigates the effects of elevated water vapor pressures (up to 100 hPa) on crystal structure, metastable phase formation, and reaction mechanisms using a custom-designed apparatus. During the dehydration of magnesium sulfate hexahydrate up to 150 °C, powder X-ray diffraction confirmed the formation of three metastable phases: MgSO4.4H2O, MgSO4.2.5H2O, and MgSO4.2H2O. Activation energy analysis using an isoconversional method confirmed that all three dehydration steps are single-step reactions. A model-free master plot approach further showed that these reactions follow the 2-D Avrami-Erofeyev model, driven by nucleation and growth. These findings provide valuable insights for optimizing the performance of magnesium sulfate in an open reactor system, where elevated localized water vapor pressures occur.
{"title":"Impact of elevated water vapor pressures on the dehydration reaction of magnesium sulfate hexahydrate in thermochemical energy storage","authors":"Tobias Niederkofler , Aldo Giovannini , Roman Lackner","doi":"10.1016/j.jssc.2025.125217","DOIUrl":"10.1016/j.jssc.2025.125217","url":null,"abstract":"<div><div>Magnesium sulfate is a promising material for thermochemical energy storage, particularly in low-temperature residential applications. However, rising water vapor pressures during dehydration can affect reaction efficiency and material stability in an open storage system. This study investigates the effects of elevated water vapor pressures (up to 100<!--> <!-->hPa) on crystal structure, metastable phase formation, and reaction mechanisms using a custom-designed apparatus. During the dehydration of magnesium sulfate hexahydrate up to 150<!--> <!-->°C, powder X-ray diffraction confirmed the formation of three metastable phases: MgSO<sub>4</sub>.4H<sub>2</sub>O, MgSO<sub>4</sub>.2.5H<sub>2</sub>O, and MgSO<sub>4</sub>.2H<sub>2</sub>O. Activation energy analysis using an isoconversional method confirmed that all three dehydration steps are single-step reactions. A model-free master plot approach further showed that these reactions follow the 2-D Avrami-Erofeyev model, driven by nucleation and growth. These findings provide valuable insights for optimizing the performance of magnesium sulfate in an open reactor system, where elevated localized water vapor pressures occur.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125217"},"PeriodicalIF":3.2,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377097","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}
To further enhance the performance of MOFs-based hydrogen sulfide (H2S) detection probes, we proposed a novel strategy for constructing for H2S detection. We have designed and synthesized a new reactive coumarin-based ligand (NTA) and directly prepared the MOFs-based fluorescent probe UiO-66-NTA using the new ligand. This approach overcame the issues of low grafting rates and uneven reactive sites associated with post synthetic modification (PSM) strategy prepared MOFs-based fluorescent probes. This construction strategy endowed MOFs with a greater number of active sites on their surfaces for H2S detection, thereby achieving superior sensing performance for H2S, which included an ultra-fast response time (5 s) and a low detection limit (0.063 μM). The rigid topological structure of the MOFs minimizes π-π interactions between fluorophores, conferring aggregation-induced emission (AIE) characteristics to the probe. To enhance the practical utility of the probe, a smartphone-assisted test strip sensing system was developed and successfully applied to the detection of real water samples. Additionally, the probe was integrated into the sodium alginate (SA) hydrogel to create a portable sensor UiO-66-NTA@SA for assessing the freshness of meat by detecting H2S.
{"title":"A novel strategy to construct MOFs-based probes using new reactive coumarin ligands for rapid and sensitive detection of hydrogen sulfide (H2S)","authors":"Peng Wang, Hongmei Qu, Xia Li, Ruyu Liu, Ruihan Dai, Yameng Li, Zhihua Zhang","doi":"10.1016/j.jssc.2025.125212","DOIUrl":"10.1016/j.jssc.2025.125212","url":null,"abstract":"<div><div>To further enhance the performance of MOFs-based hydrogen sulfide (H<sub>2</sub>S) detection probes, we proposed a novel strategy for constructing for H<sub>2</sub>S detection. We have designed and synthesized a new reactive coumarin-based ligand (NTA) and directly prepared the MOFs-based fluorescent probe UiO-66-NTA using the new ligand. This approach overcame the issues of low grafting rates and uneven reactive sites associated with post synthetic modification (PSM) strategy prepared MOFs-based fluorescent probes. This construction strategy endowed MOFs with a greater number of active sites on their surfaces for H<sub>2</sub>S detection, thereby achieving superior sensing performance for H<sub>2</sub>S, which included an ultra-fast response time (5 s) and a low detection limit (0.063 μM). The rigid topological structure of the MOFs minimizes π-π interactions between fluorophores, conferring aggregation-induced emission (AIE) characteristics to the probe. To enhance the practical utility of the probe, a smartphone-assisted test strip sensing system was developed and successfully applied to the detection of real water samples. Additionally, the probe was integrated into the sodium alginate (SA) hydrogel to create a portable sensor UiO-66-NTA@SA for assessing the freshness of meat by detecting H<sub>2</sub>S.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125212"},"PeriodicalIF":3.2,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136615","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 : 2025-01-24DOI: 10.1016/j.jssc.2025.125223
Sofiya M. Lukacheva , Elena Yu. Zakharova , Anastasiia Yu. Makhaneva , Sergey N. Nesterenko , Sergey M. Kazakov , Konstantin A. Lyssenko , Alexander M. Banaru , Alexey N. Kuznetsov
A new gallium-rich intermetallic Ti2-xNi3Ga9 was synthesized by high-temperature techniques as bulk samples and single crystals. The composition and structure of the compound were established by a combination of single-crystal and powder X-ray analysis and energy-dispersive X-ray spectroscopy. The obtained intermetallic compound crystallizes in its own structure type and has a narrow homogeneous region of x∼0.3-0. The topological relationship between Ti2-xNi3Ga9 and HoCoGa5-type structure was established. DFT calculations on the electronic structure of Ti2-xNi3Ga9 confirm metallic nature of the compound, while bonding analysis results favor the bonding scheme in Ti2-xNi3Ga9 as compared to its HoCoGa5-type hypothetical analogue.
{"title":"One nickel too many: A distorted HoCoGa5-type structure motif and topological heteroclusters in a ternary Ti2-xNi3Ga9 intermetallic","authors":"Sofiya M. Lukacheva , Elena Yu. Zakharova , Anastasiia Yu. Makhaneva , Sergey N. Nesterenko , Sergey M. Kazakov , Konstantin A. Lyssenko , Alexander M. Banaru , Alexey N. Kuznetsov","doi":"10.1016/j.jssc.2025.125223","DOIUrl":"10.1016/j.jssc.2025.125223","url":null,"abstract":"<div><div>A new gallium-rich intermetallic Ti<sub>2-x</sub>Ni<sub>3</sub>Ga<sub>9</sub> was synthesized by high-temperature techniques as bulk samples and single crystals. The composition and structure of the compound were established by a combination of single-crystal and powder X-ray analysis and energy-dispersive X-ray spectroscopy. The obtained intermetallic compound crystallizes in its own structure type and has a narrow homogeneous region of x∼0.3-0. The topological relationship between Ti<sub>2-x</sub>Ni<sub>3</sub>Ga<sub>9</sub> and HoCoGa<sub>5</sub>-type structure was established. DFT calculations on the electronic structure of Ti<sub>2-x</sub>Ni<sub>3</sub>Ga<sub>9</sub> confirm metallic nature of the compound, while bonding analysis results favor the bonding scheme in Ti<sub>2-x</sub>Ni<sub>3</sub>Ga<sub>9</sub> as compared to its HoCoGa<sub>5</sub>-type hypothetical analogue.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125223"},"PeriodicalIF":3.2,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136750","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 : 2025-01-23DOI: 10.1016/j.jssc.2025.125211
Hong-Ming Yan , Hui Chen , Yun-Long Wu , Chang-Kun Jiao , Yang-Tian Yan
In this study, a new MOFs {[Cd3(HL)6]}n (1) was synthesized by using the 6-(pyridin-3′-yl) isophthalic acid (H2L) and Cd(II) ions act as the building block via the solvothermal synthesis procedure, which have been fully characterized by single crystal X-ray diffraction, TGA, FT-IR, UV–visible spectroscopy and fluorescence experiments. The structure analysis reveal that 1 show a 2D layer structure based on a trinuclear [Cd3(COO)6N6] secondary build blocks (SBUs). Interestingly, the half depronated organic ligand HL− adopt three coordinated models with the center Cd(II) ions. Topological analysis show that the tri-nuclear SBUs and the organic ligands can be simplified as the 12- and 2- connect nodes, respectively. So the whole framework of 1 can be viewed as a new bimodal (2,12)-connect topological net with the point symbol of {414.832.1220}. Additionally, the luminescence sensing explorations reveal that 1 exhibit remarkable selectivity for Fe3+, CrO42− and Cr2O72− ions in aqueous solution, which provide a potential chemical sensor in detecting Fe3+ CrO42− and Cr2O72− ions. The sensing mechanisms have also been discussed in detail.
{"title":"A Cd(II)-based Metal-Organic Frameworks (MOFs) with new topological net as multi-functional chemical sensor in detecting Fe3+, CrO42− and Cr2O72-","authors":"Hong-Ming Yan , Hui Chen , Yun-Long Wu , Chang-Kun Jiao , Yang-Tian Yan","doi":"10.1016/j.jssc.2025.125211","DOIUrl":"10.1016/j.jssc.2025.125211","url":null,"abstract":"<div><div>In this study, a new MOFs {[Cd<sub>3</sub>(HL)<sub>6</sub>]}<sub>n</sub> (<strong>1</strong>) was synthesized by using the 6-(pyridin-3′-yl) isophthalic acid (H<sub>2</sub>L) and Cd(II) ions act as the building block via the solvothermal synthesis procedure, which have been fully characterized by single crystal X-ray diffraction, TGA, FT-IR, UV–visible spectroscopy and fluorescence experiments. The structure analysis reveal that <strong>1</strong> show a 2D layer structure based on a trinuclear [Cd<sub>3</sub>(COO)<sub>6</sub>N<sub>6</sub>] secondary build blocks (SBUs). Interestingly, the half depronated organic ligand HL<sup>−</sup> adopt three coordinated models with the center Cd(II) ions. Topological analysis show that the tri-nuclear SBUs and the organic ligands can be simplified as the 12- and 2- connect nodes, respectively. So the whole framework of <strong>1</strong> can be viewed as a new bimodal (2,12)-connect topological net with the point symbol of {4<sup>14</sup>.8<sup>32</sup>.12<sup>20</sup>}. Additionally, the luminescence sensing explorations reveal that <strong>1</strong> exhibit remarkable selectivity for Fe<sup>3+</sup>, CrO<sub>4</sub><sup>2−</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> ions in aqueous solution, which provide a potential chemical sensor in detecting Fe<sup>3+</sup> CrO<sub>4</sub><sup>2−</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> ions. The sensing mechanisms have also been discussed in detail.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125211"},"PeriodicalIF":3.2,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136458","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 : 2025-01-23DOI: 10.1016/j.jssc.2025.125222
Wangyang Wang , Ting Xu , Hang Bian , Liying Yin , Ning Zhang
To enhance the secure processing of radioactive nuclear fuel, it is essential to develop capture agents that effectively adsorb both molecular and organic iodine species. Traditional iodine capture agents often face limitations in adsorption range, capacity, and reusability. In this study, we synthesized two thiophene-based covalent organic frameworks (COFs), TAPB-DTDA and TAPT-DTDA, via Schiff base reactions. These COFs possess high specific surface areas and electron-rich heteroatoms (N and S) to facilitate iodine capture. The COFs’ large surface areas, combined with electron-rich sites, significantly improve molecular iodine adsorption. Organic iodide capture is achieved through intermolecular interactions via methylation at nitrogen sites. TAPB-DTDA and TAPT-DTDA exhibited high adsorption capacities, with values of 5.95 g/g and 5.38 g/g for static iodine vapor, respectively. Additionally, their K₈₀% values were 1.05 g g-1 h-1 and 2.23 g g-1 h-1, respectively, which outperformed the adsorption rates of most iodine adsorbents reported in the literature. For methyl iodide vapor, the adsorption capacities of TAPB-DTDA and TAPT-DTDA reached 1.02 g/g and 2.12 g/g, respectively, with TAPT-DTDA setting a new capacity record among similar materials. This study clarifies the adsorption mechanisms of iodine and methyl iodide in these COFs and provides insights for designing advanced capture agents applicable to nuclear fuel processing.
{"title":"Enhanced iodine adsorption: Thiophene-based covalent organic frameworks for efficient capture of molecular iodine and iodomethane","authors":"Wangyang Wang , Ting Xu , Hang Bian , Liying Yin , Ning Zhang","doi":"10.1016/j.jssc.2025.125222","DOIUrl":"10.1016/j.jssc.2025.125222","url":null,"abstract":"<div><div>To enhance the secure processing of radioactive nuclear fuel, it is essential to develop capture agents that effectively adsorb both molecular and organic iodine species. Traditional iodine capture agents often face limitations in adsorption range, capacity, and reusability. In this study, we synthesized two thiophene-based covalent organic frameworks (COFs), TAPB-DTDA and TAPT-DTDA, <em>via</em> Schiff base reactions. These COFs possess high specific surface areas and electron-rich heteroatoms (N and S) to facilitate iodine capture. The COFs’ large surface areas, combined with electron-rich sites, significantly improve molecular iodine adsorption. Organic iodide capture is achieved through intermolecular interactions via methylation at nitrogen sites. TAPB-DTDA and TAPT-DTDA exhibited high adsorption capacities, with values of 5.95 g/g and 5.38 g/g for static iodine vapor, respectively. Additionally, their K₈₀<sub>%</sub> values were 1.05 g g<sup>-1</sup> h<sup>-1</sup> and 2.23 g g<sup>-1</sup> h<sup>-1</sup>, respectively, which outperformed the adsorption rates of most iodine adsorbents reported in the literature. For methyl iodide vapor, the adsorption capacities of TAPB-DTDA and TAPT-DTDA reached 1.02 g/g and 2.12 g/g, respectively, with TAPT-DTDA setting a new capacity record among similar materials. This study clarifies the adsorption mechanisms of iodine and methyl iodide in these COFs and provides insights for designing advanced capture agents applicable to nuclear fuel processing.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125222"},"PeriodicalIF":3.2,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136719","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 : 2025-01-23DOI: 10.1016/j.jssc.2025.125221
Xinyuan Zhang , Yingxue Liu , Rui Liu , Ziheng Xu , Qunxi Dai , Jie Ma , Yanli Gai , Kecai Xiong
Nanoarchitectonics of two organic cocrystals constituted by zwitterionic ligands 1,1′-bis(4-carboxyphenyl)-(4,4′-bipyridinium) dichloride (H2bcbpCl2) and 1,1′-bis(3,5-dicarboxyphenyl)-4,4′-bipyridinium dichloride (H4bdcbpCl2), has been successfully synthesized and characterized. Hydrogen bonding interactions play an important role in the formation of supramolecular slipped-stacking architecture of both compounds. It is worth noting that these two compounds can quickly change from brown to green upon exposure to ethylamine, indicating that the nucleophilic attack of ethylamine molecules on the viologen moieties in both compounds contributes to the formation of free viologen radicals. In addition, compound 1 also exhibits photochromic property, and, its color rapidly and noticeably changes from brown to green under the irradiation of xenon light due to the generation of free viologen radicals. However, compound 2 lacks photochromic property due to its relatively long distance of electron donor and acceptor.
{"title":"Nanoarchitectonics of two organic cocrystals with zwitterionic ligands: Structures, photochromic and chemochromic properties","authors":"Xinyuan Zhang , Yingxue Liu , Rui Liu , Ziheng Xu , Qunxi Dai , Jie Ma , Yanli Gai , Kecai Xiong","doi":"10.1016/j.jssc.2025.125221","DOIUrl":"10.1016/j.jssc.2025.125221","url":null,"abstract":"<div><div>Nanoarchitectonics of two organic cocrystals constituted by zwitterionic ligands 1,1′-bis(4-carboxyphenyl)-(4,4′-bipyridinium) dichloride (H<sub>2</sub>bcbpCl<sub>2</sub>) and 1,1′-bis(3,5-dicarboxyphenyl)-4,4′-bipyridinium dichloride (H<sub>4</sub>bdcbpCl<sub>2</sub>), has been successfully synthesized and characterized. Hydrogen bonding interactions play an important role in the formation of supramolecular slipped-stacking architecture of both compounds. It is worth noting that these two compounds can quickly change from brown to green upon exposure to ethylamine, indicating that the nucleophilic attack of ethylamine molecules on the viologen moieties in both compounds contributes to the formation of free viologen radicals. In addition, compound <strong>1</strong> also exhibits photochromic property, and, its color rapidly and noticeably changes from brown to green under the irradiation of xenon light due to the generation of free viologen radicals. However, compound <strong>2</strong> lacks photochromic property due to its relatively long distance of electron donor and acceptor.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125221"},"PeriodicalIF":3.2,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136751","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 : 2025-01-22DOI: 10.1016/j.jssc.2025.125218
Bo Li, Yueming Lin, Zhou Fang, RuiZe Yang, Xiaohong Zhu
Sodium-ion batteries, as one of the best alternatives to lithium-ion batteries, have a broad application prospect. Manganese-based oxide anode Na0.44MnO2 has attracted much attention due to its simple, environmentally friendly, and cost-effective synthesis method. However, continuous phase transition and kinetic retardation hinder its practical application. In this study, we synthesized trace Sn-doped Na0.44MnO2 using a solid-state method and obtained a cathode material Na0.44Mn0.99Sn0.01O2 (NMSO-1) with a more stable crystal lattice structure and faster sodium ion transport rate. The capacity retention of NMSO-1 cathode was 94.6 % after 200 cycles at 1C rate, and 91.6 % after 1000 cycles at 5C rate. The material analysis shows that the introduction of a small amount of Sn can increase the lattice spacing of the material and reduce its morphological particle size, which is conducive to the enhancement of the stability of the material structure and the shortening of the ion transport path, and the positive effect of Sn is quantitatively analyzed with the help of experiments and fitting calculations. This study provides a new scheme for the doping design of cathode materials with tunneling structure, which effectively improves the multiplication capacity and cycling performance of cathode material NMO.
{"title":"High-rate performance and long-cycle stability of Sn-doped Na0.44MnO2 cathode material","authors":"Bo Li, Yueming Lin, Zhou Fang, RuiZe Yang, Xiaohong Zhu","doi":"10.1016/j.jssc.2025.125218","DOIUrl":"10.1016/j.jssc.2025.125218","url":null,"abstract":"<div><div>Sodium-ion batteries, as one of the best alternatives to lithium-ion batteries, have a broad application prospect. Manganese-based oxide anode Na<sub>0.44</sub>MnO<sub>2</sub> has attracted much attention due to its simple, environmentally friendly, and cost-effective synthesis method. However, continuous phase transition and kinetic retardation hinder its practical application. In this study, we synthesized trace Sn-doped Na<sub>0.44</sub>MnO<sub>2</sub> using a solid-state method and obtained a cathode material Na<sub>0.44</sub>Mn<sub>0.99</sub>Sn<sub>0.01</sub>O<sub>2</sub> (NMSO-1) with a more stable crystal lattice structure and faster sodium ion transport rate. The capacity retention of NMSO-1 cathode was 94.6 % after 200 cycles at 1C rate, and 91.6 % after 1000 cycles at 5C rate. The material analysis shows that the introduction of a small amount of Sn can increase the lattice spacing of the material and reduce its morphological particle size, which is conducive to the enhancement of the stability of the material structure and the shortening of the ion transport path, and the positive effect of Sn is quantitatively analyzed with the help of experiments and fitting calculations. This study provides a new scheme for the doping design of cathode materials with tunneling structure, which effectively improves the multiplication capacity and cycling performance of cathode material NMO.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"344 ","pages":"Article 125218"},"PeriodicalIF":3.2,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142318","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 : 2025-01-22DOI: 10.1016/j.jssc.2025.125219
Jiawei Zhao , Lei Liu , Yuanhao Ma, Beibei Pan, Jiayu Liu, Zhenyuan Zhang, Yuebo Hu, Shujiang Liu
Borosilicate glass has certain toughness, and doping it into the brittle Li0.5La0.5TiO3 (LLTO) solid electrolyte can not only improve the mechanical strength, but also enhance the ionic conductivity. However, as the different components in the glass change, the degree of improvement in the ion conductivity of the composite solid electrolyte also varies. Herein, Li2O–B2O3–SiO2 (LBS) glasses with different Si/B ratio, Li2O–B2O3–SiO2–Al2O3 (LBSA) glasses with different B/Al ratio and LLTO solid electrolyte were prepared, respectively. The effects of adding these two types of glasses separately on the microstructure and ionic conductivity of the LLTO solid electrolyte were studied. At room temperature, the highest ionic conductivity observed in the solid electrolytes doped with LBS was 1.0 × 10−3 S cm−1, while the maximum value for LBSA glass-doped solid electrolyte reached 1.31 × 10−3 S cm−1. This research provides a new idea for the development of solid-state electrolytes.
{"title":"Ionic conductivity improvement of Li0.5La0.5TiO3 solid electrolyte by addition of borosilicate glasses","authors":"Jiawei Zhao , Lei Liu , Yuanhao Ma, Beibei Pan, Jiayu Liu, Zhenyuan Zhang, Yuebo Hu, Shujiang Liu","doi":"10.1016/j.jssc.2025.125219","DOIUrl":"10.1016/j.jssc.2025.125219","url":null,"abstract":"<div><div>Borosilicate glass has certain toughness, and doping it into the brittle Li<sub>0.5</sub>La<sub>0.5</sub>TiO<sub>3</sub> (LLTO) solid electrolyte can not only improve the mechanical strength, but also enhance the ionic conductivity. However, as the different components in the glass change, the degree of improvement in the ion conductivity of the composite solid electrolyte also varies. Herein, Li<sub>2</sub>O–B<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> (LBS) glasses with different Si/B ratio, Li<sub>2</sub>O–B<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> (LBSA) glasses with different B/Al ratio and LLTO solid electrolyte were prepared, respectively. The effects of adding these two types of glasses separately on the microstructure and ionic conductivity of the LLTO solid electrolyte were studied. At room temperature, the highest ionic conductivity observed in the solid electrolytes doped with LBS was 1.0 × 10<sup>−3</sup> S cm<sup>−1</sup>, while the maximum value for LBSA glass-doped solid electrolyte reached 1.31 × 10<sup>−3</sup> S cm<sup>−1</sup>. This research provides a new idea for the development of solid-state electrolytes.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"344 ","pages":"Article 125219"},"PeriodicalIF":3.2,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142400","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 : 2025-01-21DOI: 10.1016/j.jssc.2025.125216
Ze Chen, Yuping Li, Fuchao Ji, Xiaohong Liang, Haicheng Xuan, Lina Han, Peide Han
Economical and efficient synthesis of small-size SSZ-13 zeolite catalysts with CHA topology is attractive for reducing the nitrogen oxide (NOx) emissions from diesel vehicles. Herein, SSZ-13 zeolites were prepared using low-cost and environmental-friendly choline chloride (CC) as a template. The effects of additional sodium ions and dynamic stirring aging on the crystallization quality, solid yield and physicochemical properties of the obtained SSZ-13 were investigated by XRD, FT-IR, SEM, N2 sorption and TG-DTG techniques. The results show that three sodium salts (NaCl, NaF, and Na2SO4) and aging steps can improve the relative crystallinity and solid yield of the SSZ-13 zeolites to a certain extent. Meanwhile, it was found that sodium salt and aging process significantly changed the crystal morphology of SSZ-13 zeolite from irregular particle aggregates to regular and uniform cubic crystals. And the crystal size of obtained SSZ-13 zeolites also decreased from ∼3 μm to 250–400 nm (adding sodium salts) or ∼700 nm (adding aging steps), respectively. The decrease in the size of SSZ-13 crystals is mainly attributed to that the addition of additional sodium salts or aging steps promoted the formation of more CHA zeolite nuclei. Additionally, the influence of the Na+(NaF) content and aging time on the synthesis of SSZ-13 were explored, and the effect mechanism of additional sodium ions and aging steps in the current synthetic system were also discussed. Finally, the obtained Cu-SSZ-13 samples after Cu2+ exchange exhibits good catalytic performance for NH3-SCR of NOx reaction, and the NOx conversion remained over 90 % across a temperature window from ∼200 to ∼500 °C, demonstrating its application potentials in diesel vehicle exhausts purification.
{"title":"Economically and eco-friendly synthesis of SSZ-13 zeolite using choline chloride as template with the investigation effects of sodium ion and aging","authors":"Ze Chen, Yuping Li, Fuchao Ji, Xiaohong Liang, Haicheng Xuan, Lina Han, Peide Han","doi":"10.1016/j.jssc.2025.125216","DOIUrl":"10.1016/j.jssc.2025.125216","url":null,"abstract":"<div><div>Economical and efficient synthesis of small-size SSZ-13 zeolite catalysts with CHA topology is attractive for reducing the nitrogen oxide (NO<sub>x</sub>) emissions from diesel vehicles. Herein, SSZ-13 zeolites were prepared using low-cost and environmental-friendly choline chloride (CC) as a template. The effects of additional sodium ions and dynamic stirring aging on the crystallization quality, solid yield and physicochemical properties of the obtained SSZ-13 were investigated by XRD, FT-IR, SEM, N<sub>2</sub> sorption and TG-DTG techniques. The results show that three sodium salts (NaCl, NaF, and Na<sub>2</sub>SO<sub>4</sub>) and aging steps can improve the relative crystallinity and solid yield of the SSZ-13 zeolites to a certain extent. Meanwhile, it was found that sodium salt and aging process significantly changed the crystal morphology of SSZ-13 zeolite from irregular particle aggregates to regular and uniform cubic crystals. And the crystal size of obtained SSZ-13 zeolites also decreased from ∼3 μm to 250–400 nm (adding sodium salts) or ∼700 nm (adding aging steps), respectively. The decrease in the size of SSZ-13 crystals is mainly attributed to that the addition of additional sodium salts or aging steps promoted the formation of more CHA zeolite nuclei. Additionally, the influence of the Na<sup>+</sup>(NaF) content and aging time on the synthesis of SSZ-13 were explored, and the effect mechanism of additional sodium ions and aging steps in the current synthetic system were also discussed. Finally, the obtained Cu-SSZ-13 samples after Cu<sup>2+</sup> exchange exhibits good catalytic performance for NH<sub>3</sub>-SCR of NO<sub>x</sub> reaction, and the NO<sub>x</sub> conversion remained over 90 % across a temperature window from ∼200 to ∼500 °C, demonstrating its application potentials in diesel vehicle exhausts purification.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125216"},"PeriodicalIF":3.2,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136718","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 : 2025-01-20DOI: 10.1016/j.jssc.2025.125214
Guilan Chen , Zhihui Kang , Yuxiang Ma , Xiaoli Huang , Xiao Sun , Qianwen Wang
Porous magnesium hydroxide with high specific surface area is widely used in environmental applications. In traditional sol-gel methods, the preparation of high-surface-area porous magnesium hydroxide (HSA-PMH) necessitate the use of highly reactive alkoxide as a precursor, thereby limiting its development. Herein, HSA-PMH was prepared by a simple crosslinking ionic oligomer sol-gel method using MgCl2·6H2O as precursor, short-chain alkohol as solvent and triethylamine (TEA) as alkaline reagent and capping agent. The choice of alkohol solvent plays a significant role in influencing the degree of crystallinity, morphology and porosity of HSA-PMH. Alkohol solvent with high dielectric constant favors the formation of HSA-PMH. When the molar ratio of TEA to Mg2+ is 30:1 and methanol is used as the solvent, the specific surface area of HSA-PMH reaches 538 m2∙g−1. The Pb2+ adsorption properties of the HSA-PMH were further investigated. It was found that 98 % of the Pb2+ could be removed within 15 min, and the maximum adsorption capacity calculated by Langmuir isotherm model reached 4245 mg∙g−1. The results indicate that the synthesized HSA-PMH is an excellent adsorbent for Pb2+, boasting a high adsorption capacity and rapid rate of adsorption.
{"title":"Crosslinking ionic oligomers sol-gel synthesis of porous amorphous magnesium hydroxide and its application in Pb2+ adsorption","authors":"Guilan Chen , Zhihui Kang , Yuxiang Ma , Xiaoli Huang , Xiao Sun , Qianwen Wang","doi":"10.1016/j.jssc.2025.125214","DOIUrl":"10.1016/j.jssc.2025.125214","url":null,"abstract":"<div><div>Porous magnesium hydroxide with high specific surface area is widely used in environmental applications. In traditional sol-gel methods, the preparation of high-surface-area porous magnesium hydroxide (HSA-PMH) necessitate the use of highly reactive alkoxide as a precursor, thereby limiting its development. Herein, HSA-PMH was prepared by a simple crosslinking ionic oligomer sol-gel method using MgCl<sub>2</sub>·6H<sub>2</sub>O as precursor, short-chain alkohol as solvent and triethylamine (TEA) as alkaline reagent and capping agent. The choice of alkohol solvent plays a significant role in influencing the degree of crystallinity, morphology and porosity of HSA-PMH. Alkohol solvent with high dielectric constant favors the formation of HSA-PMH. When the molar ratio of TEA to Mg<sup>2+</sup> is 30:1 and methanol is used as the solvent, the specific surface area of HSA-PMH reaches 538 m<sup>2</sup>∙g<sup>−1</sup>. The Pb<sup>2+</sup> adsorption properties of the HSA-PMH were further investigated. It was found that 98 % of the Pb<sup>2+</sup> could be removed within 15 min, and the maximum adsorption capacity calculated by Langmuir isotherm model reached 4245 mg∙g<sup>−1</sup>. The results indicate that the synthesized HSA-PMH is an excellent adsorbent for Pb<sup>2+</sup>, boasting a high adsorption capacity and rapid rate of adsorption.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"345 ","pages":"Article 125214"},"PeriodicalIF":3.2,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136722","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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