Journal of Solid State Chemistry最新文献

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Thermally enhanced luminescence of down-conversion NaScMo2O8:Eu3+ phosphor for white LEDs 下转换NaScMo2O8:Eu3+荧光粉用于白光led的热增强发光
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-09-03 DOI: 10.1016/j.jssc.2025.125628
Rui Zhu , Zelin Huang , Shengnan Zong
{"title":"Thermally enhanced luminescence of down-conversion NaScMo2O8:Eu3+ phosphor for white LEDs","authors":"Rui Zhu ,&nbsp;Zelin Huang ,&nbsp;Shengnan Zong","doi":"10.1016/j.jssc.2025.125628","DOIUrl":"10.1016/j.jssc.2025.125628","url":null,"abstract":"<div><div>The thermal quenching effect of phosphors imposed significant limitations on the applications of luminescent materials in high-temperature environments, which can lead to device performance degradation or even system failure. Currently, there was a lack of red phosphors that demonstrate high luminous efficiency, excellent stability, and high color purity, making them suitable for white light-emitting diodes (LEDs). Herein, a strategy to enhance luminescence at elevated temperatures was achieved by synthesizing Eu<sup>3+</sup>-doped monoclinic NaScMo<sub>2</sub>O<sub>8</sub> phosphors, whose structural, morphological, thermal, and optical properties were characterized by XRD, SEM, TG, and PL spectroscopy. A comprehensive investigation of the optical properties revealed a significant increase in luminescence intensity with high Eu<sup>3+</sup> concentrations. At a doping concentration of 3 mol%, the phosphor exhibited the strongest electric dipole transition (<sup>5</sup>D<sub>0</sub>-<sup>7</sup>F<sub>2</sub>) with a maximum emission peak at 614 nm. Between 30 °C and 270 °C, the red characteristic emissions of Eu<sup>3+</sup> gradually intensified with rising temperature, reaching up to 8 times the intensity at room temperature, while maintaining consistent fluorescence characteristics. These findings highlighted its potential application in white LEDs.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125628"},"PeriodicalIF":3.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997621","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
Sulphurization of In thin films using Bi2S3 and Sb2S3 and self-organized fabrication of In2S3 nanodots by electrochemical etching 用Bi2S3和Sb2S3对In薄膜进行硫化及电化学刻蚀制备In2S3纳米点
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-09-02 DOI: 10.1016/j.jssc.2025.125605
A. Aleksandrova , T. Barlas , Z. Zhuchenko , C. Golz , M. Hanke , A. Trampert , D. Spallek , C. Herrmann , W.T. Masselink , Y. Takagaki
{"title":"Sulphurization of In thin films using Bi2S3 and Sb2S3 and self-organized fabrication of In2S3 nanodots by electrochemical etching","authors":"A. Aleksandrova ,&nbsp;T. Barlas ,&nbsp;Z. Zhuchenko ,&nbsp;C. Golz ,&nbsp;M. Hanke ,&nbsp;A. Trampert ,&nbsp;D. Spallek ,&nbsp;C. Herrmann ,&nbsp;W.T. Masselink ,&nbsp;Y. Takagaki","doi":"10.1016/j.jssc.2025.125605","DOIUrl":"10.1016/j.jssc.2025.125605","url":null,"abstract":"<div><div>Thin In films are exposed to the vapor of Sb<sub>2</sub>S<sub>3</sub> and Bi<sub>2</sub>S<sub>3</sub> at high temperatures for sulphurization. The release of Sb and Bi in the reaction alters the properties of the synthesized <span><math><mi>β</mi></math></span>-In<sub>2</sub>S<sub>3</sub> films by introducing surfactant effects. For using Sb<sub>2</sub>S<sub>3</sub>, the texture of the films is not sensitive to the sulphurization temperature. A morphological change takes place at a critical thickness of the In films of about 50 nm. Below the critical thickness, the constitution of the synthesized films is grain-like with a uniform grain size of about 100 nm. Above the critical thickness, the granularity looses the characteristic size as if the films consist of fine particles. Bumps emerge in the latter situation due to the surface instability of the In melt against the volume expansion in the solidification. The grains in the films prepared using Bi<sub>2</sub>S<sub>3</sub> are submicron-sized and loosely connected to each other regardless of the thickness. The films are hence homogeneous with exhibiting no surface bulging. More importantly, hexagon-shaped disks are interwoven in the In<sub>2</sub>S<sub>3</sub> films for a range of the synthesis temperature. The two-dimensional material is suggested to be an unknown compound having an approximate composition of Bi<sub>9</sub>In<sub>13</sub>S<sub>18</sub>, where Bi is incorporated in the alloy when the Bi production is significantly faster than its loss by the evaporation. The formation of the ternary alloy in the present case evidences that the elastic energy associated with the lattice coincidence to the substrate influences the inclusion of Bi in the sulfide. Furthermore, nanodots are observed to be produced in a self-organized fashion in the electrochemical etching of the In<sub>2</sub>S<sub>3</sub> films.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125605"},"PeriodicalIF":3.5,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010796","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
Exploring the formation of phosphoric acid-based metakaolin geopolymer and underlying mechanisms under various Liquid-to-Solid ratios 探讨了不同液固比下磷酸基偏高岭土聚合物的形成及其机理
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jssc.2025.125607
Ishrat Hameed Alvi , Haixiang Hu , Qi Li , Yanmei Ma , Chikezie Chimere Onyekwena
{"title":"Exploring the formation of phosphoric acid-based metakaolin geopolymer and underlying mechanisms under various Liquid-to-Solid ratios","authors":"Ishrat Hameed Alvi ,&nbsp;Haixiang Hu ,&nbsp;Qi Li ,&nbsp;Yanmei Ma ,&nbsp;Chikezie Chimere Onyekwena","doi":"10.1016/j.jssc.2025.125607","DOIUrl":"10.1016/j.jssc.2025.125607","url":null,"abstract":"<div><div>This study investigates the influence of a wide range of liquid-to-solid (L/S) mass ratios (L1–L2000) on the reaction mechanism of phosphoric acid-activated metakaolin geopolymers, presenting new insights into acid-activated geopolymer behavior that have not been fully explored in previous studies. Through chemical analyses and characterization techniques (titration, ICP-OES, XRF, XRD), we found that L/S &lt; 2 promotes complete geopolymerization, resulting in dense AlPO<sub>4</sub>-rich matrices (confirmed by XRD), an important observation in the context of phosphoric acid activation. In contrast, L/S &gt; 2 leads to incomplete reactions or the disintegration of the geopolymer due to excess H<sub>3</sub>PO<sub>4</sub>, an aspect previously underappreciated. The study also reveals critical findings about chemical stability, including significant Al/P leaching (5900/6567 %) when exposed to 3 mol/L HNO<sub>3</sub> concentration, with silicon remaining largely intact. This demonstrates a new understanding of the acid vulnerability and silicate stability of phosphoric acid-activated geopolymers. By identifying the optimal L1 ratio, which shows minimal leaching and pH stability, our work provides novel practical guidelines for controlling L/S ratios to improve acid resistance in geopolymer applications. These findings offer crucial insights into acid-activated geopolymer degradation mechanisms and present a step forward in designing sustainable, acid-resistant materials and cement alternatives, surpassing prior studies in their focus on the precise L/S ratio control (&lt;2) and its practical implications for industrial applications. Strong titration-ICP correlations validate the analytical reliability, further underscoring the robustness of our findings.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125607"},"PeriodicalIF":3.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997618","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
Experimental and DFT studies on energy storage efficiency of Ag+ doped barium titanate thin films (Ba1-xAgxTiO3 (x = 0.00, 0.10, 0.20)) Ag+掺杂钛酸钡薄膜(Ba1-xAgxTiO3 (x = 0.00, 0.10, 0.20))储能效率的实验和DFT研究
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jssc.2025.125606
Yahaya Saadu Itas , Fatima Musa Lariski , Mayeen Uddin Khandaker , Ali El-Rayyes , Faiza Benabdallah
{"title":"Experimental and DFT studies on energy storage efficiency of Ag+ doped barium titanate thin films (Ba1-xAgxTiO3 (x = 0.00, 0.10, 0.20))","authors":"Yahaya Saadu Itas ,&nbsp;Fatima Musa Lariski ,&nbsp;Mayeen Uddin Khandaker ,&nbsp;Ali El-Rayyes ,&nbsp;Faiza Benabdallah","doi":"10.1016/j.jssc.2025.125606","DOIUrl":"10.1016/j.jssc.2025.125606","url":null,"abstract":"<div><div>The current study investigated the energy storage capacity of Ag<sup>+</sup> doped two-dimensional (2D) barium titanate perovskite, using combinations of experimental theoretical techniques. Data from electrochemical impedance spectra and DFT geometrical optimization revealed the existence of +1 valency state by Ag ions. With the obtained parameters, highest efficiency was attributed to 0.10 mol% Ag doped 2D BaTiO<sub>3</sub> variant, due to reduced defect and suppressed ferroelectric order. Notably, the piezoelectric response showed slight decreasing trend with Ag<sup>+</sup> content, reaching the lower value of 223 pC/N with 0.20 mol% Ag. Reduction in the values of T<sub>c</sub> due to Ag <sup>+</sup> ions indicates reduced polarization and high dielectric permittivity. In all samples used, good relationship existed between recoverable-energy storage and efficiency, owing to remanent polarization, hysteresis loss and dielectric breakdown. Moderate doping improved breakdown strength, leading to reduced P<sub>r</sub> which increases <span><math><mrow><msub><mi>W</mi><mrow><mi>r</mi><mi>e</mi><mi>c</mi></mrow></msub></mrow></math></span> values with relatively 1.12 Jcm<sup>−3</sup>. The conducted experimental and DFT analysis revealed good alignment between some considered structural and energy storage parameters, such as lattice constants, piezoelectricity, and curie temperature.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125606"},"PeriodicalIF":3.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027600","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
Amine-modified graphene oxide: Reaction mechanism with functional groups and enhanced CO2 adsorption-separation performance 胺修饰氧化石墨烯:具有官能团的反应机理及增强CO2吸附分离性能
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jssc.2025.125617
Haoyue Deng , Tiehu Li , Hao Li , Alei Dang , Yongkang Han
{"title":"Amine-modified graphene oxide: Reaction mechanism with functional groups and enhanced CO2 adsorption-separation performance","authors":"Haoyue Deng ,&nbsp;Tiehu Li ,&nbsp;Hao Li ,&nbsp;Alei Dang ,&nbsp;Yongkang Han","doi":"10.1016/j.jssc.2025.125617","DOIUrl":"10.1016/j.jssc.2025.125617","url":null,"abstract":"<div><div>Amine-modified adsorbents exhibit remarkable potential for efficient CO<sub>2</sub> capture. Nevertheless, the understanding of the reaction mechanism between amines and adsorbents, as well as the influence of polar groups on CO<sub>2</sub> adsorption, remains rather limited. In this study, a series of amine-containing chemicals were used to modify graphene oxide (GO). This exploration revealed the reaction mechanism between amine groups and GO's oxygen functional groups and emphasized that GO with a higher amine density and stronger polar groups demonstrates enhanced CO<sub>2</sub> adsorption and separation capabilities. Compared with pristine GO, urea-modified GO shows a significantly increased CO<sub>2</sub> adsorption capacity (from 0.42 to 1.70 mmol/g) and CO<sub>2</sub>/N<sub>2</sub> selectivity (from 3.0 to 28.0). After 10 adsorption-desorption cycles, its adsorption capacity decreased by only 7.56 %, confirming its good regenerative stability. Overall, the modified GO co-regulated by amine groups and polar groups prepared in this study is considered an effective CO<sub>2</sub> adsorption/separation material, showing great potential for green and sustainable applications.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125617"},"PeriodicalIF":3.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932552","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
Effects of Ca2+ doping on the structural and magnetoelectric transport properties of cation-deficient La0.97MnO3+δ manganites Ca2+掺杂对缺阳离子La0.97MnO3+δ锰矿石结构和磁电输运性质的影响
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jssc.2025.125624
Junfeng Li , Sheng'an Yang , Qingming Chen , Yule Li , Jian He , Yuchen Xie , DingZhang Wu , Yingjuan Li , Hui Zhang , Xiang Liu
{"title":"Effects of Ca2+ doping on the structural and magnetoelectric transport properties of cation-deficient La0.97MnO3+δ manganites","authors":"Junfeng Li ,&nbsp;Sheng'an Yang ,&nbsp;Qingming Chen ,&nbsp;Yule Li ,&nbsp;Jian He ,&nbsp;Yuchen Xie ,&nbsp;DingZhang Wu ,&nbsp;Yingjuan Li ,&nbsp;Hui Zhang ,&nbsp;Xiang Liu","doi":"10.1016/j.jssc.2025.125624","DOIUrl":"10.1016/j.jssc.2025.125624","url":null,"abstract":"<div><div>Vacancy-regulated perovskite manganites have attracted considerable attention in recent years due to their unique crystal structures and multifunctional properties. However, the influence of Ca<sup>2+</sup> doping on the magnetoelectric transport properties of cation-deficient manganites remains insufficiently explored. In this work, Ca<sup>2+</sup>-doped La<sub>0.97</sub>MnO<sub>3+δ</sub> ceramics were synthesized via a sol-gel method. The synergistic effects of Ca<sup>2+</sup> substitution and cation vacancies on the structure and magnetoelectric transport properties of La<sub>0.97</sub>MnO<sub>3+δ</sub> ceramics were systematically investigated. All ceramics were single-phase and crystallized in a rhombohedral structure. The unit cell volume gradually decreased, which can be primarily ascribed to the smaller ionic radius of Ca<sup>2+</sup> compared with La<sup>3+</sup>. Notably, the Mn<sup>3+</sup>/Mn<sup>4+</sup> ratio was found to be governed mainly by the total cation vacancy concentration rather than the Ca<sup>2+</sup> content. Moreover, the ferromagnetism of the ceramics was enhanced with increasing <em>x</em>, accompanied by a reduction in resistivity and an increase in the insulator-metal (I-M) transition temperature. These results are attributed to the strengthened double exchange interaction between Mn<sup>3+</sup>-O<sup>2-</sup>-Mn<sup>4+</sup> pairs facilitated by Ca<sup>2+</sup> doping, as well as the increased Mn–O–Mn exchange pathways arising from the reduced Mn vacancy concentration. Furthermore, the (La<sub>0.92</sub>Ca<sub>0.08</sub>)<sub>0.97</sub>MnO<sub>3+δ</sub> film exhibited a colossal magnetoresistance (CMR) effect, reaching 46.4 % at 233.4 K. These findings provide valuable insights into the coupled effects of Ca<sup>2+</sup> doping and cation vacancies on the magnetoelectric properties of manganites.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125624"},"PeriodicalIF":3.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997617","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
Luminescence, mechanical and non-isothermal crystallization kinetics properties of MnO-doped borosilicate glasses for photonics applications 二氧化锰掺杂硼硅酸盐玻璃的发光、力学和非等温结晶动力学
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-31 DOI: 10.1016/j.jssc.2025.125608
Savidh Khan , Santosh Kumar , Nidhi Jast , Km Abida , K. Singh , Sukhjot Singh
{"title":"Luminescence, mechanical and non-isothermal crystallization kinetics properties of MnO-doped borosilicate glasses for photonics applications","authors":"Savidh Khan ,&nbsp;Santosh Kumar ,&nbsp;Nidhi Jast ,&nbsp;Km Abida ,&nbsp;K. Singh ,&nbsp;Sukhjot Singh","doi":"10.1016/j.jssc.2025.125608","DOIUrl":"10.1016/j.jssc.2025.125608","url":null,"abstract":"<div><div>This study explores the <em>MnO</em> doping effects on mechanical, non-isothermal crystallization kinetics and luminescence properties of 30<em>SiO</em><sub>2</sub>–50<em>B</em><sub>2</sub><em>O</em><sub>3</sub>-(20-x)<em>Li</em><sub>2</sub><em>O</em>-x<em>MnO</em> (where, x = 4, 6, 8, and 10 mol%) glasses produced by melting and quenching method. Makishima-Mackenzie (M<sub>MR</sub>) and Rocherulle (R<sub>M</sub>) models are used to study the mechanical properties of the prepared glass samples. The FTIR spectra confirm the presence of different structural units of borate and silicate in the prepared glass samples. The Kissinger and Augis-Bennett models are used to study the activation energies (<em>E</em><sub><em>g</em></sub>, <em>E</em><sub><em>r</em></sub>, and <em>E</em><sub><em>c</em></sub>) of the prepared glasses. The substitution of <em>Li</em><sub>2</sub><em>O</em> with <em>MnO</em> is responsible for weakening the glass network, and, consequently, glass with the highest doping of <em>MnO</em> (LM-10, 10 mol%) exhibits lowest network rigidity. Glass with the lowest doping of <em>MnO</em> (LM-4, 4 mol%) exhibits the highest activation energy (<em>E</em><sub><em>g</em></sub>) for crystallization. While glass with the highest doping of <em>MnO</em> (LM-10, 10 mol%) exhibits the lowest activation energy (<em>E</em><sub><em>g</em></sub>) of crystallization. The fragility index shows a decreasing trend with <em>MnO</em> doping and heating rates, while thermal stability shows an increasing trend with increasing <em>MnO</em> doping. The value of correlated colour temperature lies between 1692 and 1712 K and confirms that the <em>MnO</em>-doped borosilicate glasses predominantly emit in the bluish-pink region, highlighting their potential utility in photonics applications.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125608"},"PeriodicalIF":3.5,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997620","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
2D copper metal-organic framework as an electrocatalyst for the highly efficient electrochemical reduction of low concentration nitrate/nitrite-to-ammonia 二维铜金属有机骨架电催化剂用于低浓度硝酸盐/亚硝酸盐高效电化学还原制氨
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-31 DOI: 10.1016/j.jssc.2025.125623
Fang-Ting Wang, Qing-Yun Xie, Huan Jiao, Ling Xu
{"title":"2D copper metal-organic framework as an electrocatalyst for the highly efficient electrochemical reduction of low concentration nitrate/nitrite-to-ammonia","authors":"Fang-Ting Wang,&nbsp;Qing-Yun Xie,&nbsp;Huan Jiao,&nbsp;Ling Xu","doi":"10.1016/j.jssc.2025.125623","DOIUrl":"10.1016/j.jssc.2025.125623","url":null,"abstract":"<div><div>The accumulation of nitrate/nitrite (NO<sub><em>x</em></sub><sup>–</sup>) in wastewater poses a threat on ecological safety. Electrocatalytic NO<sub><em>x</em></sub><sup>–</sup> reduction to ammonia (NO<sub><em>x</em></sub><sup>–</sup>RR) is feasible to realize green ammonia production. This work developed a 2D copper metal-organic framework of Cu-BDC (H<sub>2</sub>BDC = 1,4-benzene dicarboxylic acid) as an efficient electrocatalyst for NO<sub><em>x</em></sub><sup>–</sup>RR, exhibiting high-performance with the NH<sub>3</sub> yield of 71.20 μmol‧h<sup>−1</sup>‧cm<sup>−2</sup> and a Faraday efficiency of 80.9 % at −0.746 V (<em>vs.</em> RHE) for NO<sub>2</sub><sup>−</sup>RR, and the NH<sub>3</sub> yield of 130.16 μmol‧h<sup>−1</sup>‧cm<sup>−2</sup> and a Faraday efficiency of 67.42 % at −0.946 V (<em>vs.</em> RHE) for NO<sub>3</sub><sup>−</sup>RR. Isotope labelled <sup>14</sup>NO<sub>3</sub><sup>−</sup> and <sup>15</sup>NO<sub>3</sub><sup>−</sup> produced <sup>14</sup>NH<sub>4</sub><sup>+</sup> and <sup>15</sup>NH<sub>4</sub><sup>+</sup>, supporting the formation of NH<sub>3</sub> comes from the NO<sub>3</sub><sup>−</sup>RR. In three NO<sub><em>x</em></sub><sup>–</sup>RR cycles, all NH<sub>3</sub> yields and Faraday efficiencies show a slight change, demonstrating an excellent electrocatalytic stability in NO<sub><em>x</em></sub><sup>–</sup>RR. Our work provides a new material platform for the elimination of nitrate and nitrite through electrocatalytic reduction.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125623"},"PeriodicalIF":3.5,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005284","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
Alkali metal-promoted graphene oxide-doped stearate-intercalated layered double oxide composites with high performance of CO2 capture 碱金属促进的氧化石墨烯掺杂硬脂酸插层双氧化物复合材料的CO2捕获性能
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-30 DOI: 10.1016/j.jssc.2025.125620
Kai Wu , Lanyang Wang , Qing Ye , Fanwei Meng , Zezhong Zhao , Hongxing Dai
{"title":"Alkali metal-promoted graphene oxide-doped stearate-intercalated layered double oxide composites with high performance of CO2 capture","authors":"Kai Wu ,&nbsp;Lanyang Wang ,&nbsp;Qing Ye ,&nbsp;Fanwei Meng ,&nbsp;Zezhong Zhao ,&nbsp;Hongxing Dai","doi":"10.1016/j.jssc.2025.125620","DOIUrl":"10.1016/j.jssc.2025.125620","url":null,"abstract":"<div><div>The alkali metal (M)-promoted graphene oxide (GO)-doped stearate-intercalated layered double oxide (M/GO−LDO-SA; M = Li, Na, K, and Cs) samples were prepared via an in-situ impregnation approach, representing the first reported instance of medium-temperature (200–300 °C) CO<sub>2</sub> adsorbents employing this novel composite architecture. The loading of alkali metals could improve adsorption capacity of these composites. The alkalinity of the M/GO−LDO-SA adsorbents enhanced with the increase in alkali metal ion radium, whose trend was the same as that of the alkali metal oxides. Among the synthesized materials, the 11K/GO−LDO-SA composite demonstrated superior CO<sub>2</sub> adsorption capacity (1.14 mmol/g), outperforming other alkali metal-promoted counterparts. This enhanced capture performance was correlated with its alkaline site amount. The CO<sub>2</sub> adsorption mechanism on the nanocomposite was primarily governed by chemisorption, with the adsorbed CO<sub>2</sub> molecules being primarily stabilized as carbonate species through chemical interactions. Notably, the 11K/GO−LDO-SA composite demonstrated exceptional regeneration efficiency, maintaining over 87 % of its initial adsorption capacity after 10 consecutive adsorption-desorption cycles, highlighting its remarkable regeneration efficiency. The synergistic combination of enhanced basicity, optimized textural properties, and improved thermal stability positions these new nanocomposites as promising candidates for post-combustion carbon capture applications.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"353 ","pages":"Article 125620"},"PeriodicalIF":3.5,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997619","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
Engineering zirconium organic gels for fast Li+ conduction 用于Li+快速传导的工程锆有机凝胶
IF 3.5 3区 化学
Journal of Solid State Chemistry Pub Date : 2025-08-30 DOI: 10.1016/j.jssc.2025.125621
Wenbo Sun , Dan Gao , Liru Cui , Feng Zhang , Zhijie Duan , Xuezhi Bao
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