Journal of Solid State Chemistry最新文献_第2页

Rare earth ruthenium gallides with the high content of gallium LaRu2Ga3, R2Ru5Ga9 (RSm, Gd–Er) and R5Ru8Ga12 (RHo, Er) 高含量的稀土钌镓LaRu2Ga3、R2Ru5Ga9 （RSm, Gd-Er）和R5Ru8Ga12 （RHo, Er）

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-20 DOI: 10.1016/j.jssc.2025.125442

I. Grekhov, Y. Grishina, Zh Kurenbaeva, E. Murashova

{"title":"Rare earth ruthenium gallides with the high content of gallium LaRu2Ga3, R2Ru5Ga9 (RSm, Gd–Er) and R5Ru8Ga12 (RHo, Er)","authors":"I. Grekhov, Y. Grishina, Zh Kurenbaeva, E. Murashova","doi":"10.1016/j.jssc.2025.125442","DOIUrl":"10.1016/j.jssc.2025.125442","url":null,"abstract":"<div><div>Compounds of the compositions LaRu2Ga3, R2Ru5Ga9, and R5Ru8Ga12 were obtained close to the composition of RRu2Ga3 in the R–Ru–Ga systems (R<img>La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, and Er). The compound LaRu2Ga3 crystallizes in its own structural type, R2Ru5Ga9 (R<img>Sm, Gd–Er) crystallizes in the structural type Sm2Ru5Ga9, and R5Ru8Ga12 (R<img>Ho, Er) crystallizes in a structural type derived from Sc5Re8Si12. The crystal structure of LaRu2Ga3 is determined on a single crystal: a = 12.0750(12) Å, b = 5.8276(6) Å, c = 6.2391(6) Å, V = 439.03(8) Å3, Z = 4, space group Pnma. No new phases were found in samples with R<img>Pr, Nd. The crystal structure of R2Ru5Ga9 was determined on a single crystal of one of the representatives of the series – Dy2Ru5Ga9: a = 6.1356(11) Å, c = 13.429(3) Å, V = 505.5(2) Å3, Z = 2, space group I4/mmm. The Ho5Ru8Ga12 single crystal was used to determine the crystal structure: a = 15.332(2) Å, b = 20.019(3) Å, c = 5.4725(8) Å, V = 1679.7(4) Å3, Z = 4, space group Fmm2. Melting occurs congruently for all investigated compounds. It was not possible to obtain single phase samples for the determination of magnetic and electrically conductive properties.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125442"},"PeriodicalIF":3.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124668","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 europium metal-organic framework as a sensitive fluorescence turn-off sensor for 4-nitrophenol detection in water and soil 一种铕金属-有机骨架作为灵敏的荧光关闭传感器用于水体和土壤中4-硝基苯酚的检测

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-20 DOI: 10.1016/j.jssc.2025.125437

Tao Zhang, Fang-Ting Wang, Qian-Ting Wang, Ling Xu

{"title":"A europium metal-organic framework as a sensitive fluorescence turn-off sensor for 4-nitrophenol detection in water and soil","authors":"Tao Zhang, Fang-Ting Wang, Qian-Ting Wang, Ling Xu","doi":"10.1016/j.jssc.2025.125437","DOIUrl":"10.1016/j.jssc.2025.125437","url":null,"abstract":"<div><div>The detection of 4-nitrophenol (4-NP) is of significance for environment safety and human health. This work presented a 3D europium-based metal-organic framework (MOF) material, Eu-NDC, as a fluorescence turn-off sensor for monitoring 4-NP with high sensitivity, anti-interference, and durability. Its detection conditions were optimized as Eu-NDC concentration = 0.2 mg mL−1, fluorescence response time = 2 min, and the solvent being water. The sensitive test revealed a linear fitting equation of (I0–I)/I = 3.541 × 104 M−1C4-NP with 4-NP concentration (C4-NP) ranging 9.9–90.9 μM, whose limit of detection and limit of quantitation were calculated to be 0.170 and 0.565 μM, respectively. Fluorescence quenching efficiency of Eu-NDC is beyond 99 % as sensing 4- NP with the presence of common ions and five nitro-containing aromatic compounds in water, supporting a high anti-interference. A high durability can be demonstrated that the emission intensity at 618 nm of Eu-NDC can stay at least 90 % in the first five fluorescence quenching-regeneration cycles. The presented fluorescence assay is reliable for determining 4-NP in lake water, tap water and soil with all measured C4-NPs close to the spiked C4-NPs and all fluorescence recoveries around 100 %. The detection mechanism of Eu-NDC sensing 4-NP is interpreted as an inner filter effect.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125437"},"PeriodicalIF":3.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116410","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

Transition metal oxide doped with variable valence metal promote the continuous and efficient decomposition of ammonium perchlorate 掺杂变价金属的过渡金属氧化物促进了高氯酸铵的连续高效分解

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-19 DOI: 10.1016/j.jssc.2025.125441

Qianwen Jiang, Jianyong Xu, Xiwen Wang, Pengfei Cui, Chunpei Yu, Wenchao Zhang

{"title":"Transition metal oxide doped with variable valence metal promote the continuous and efficient decomposition of ammonium perchlorate","authors":"Qianwen Jiang, Jianyong Xu, Xiwen Wang, Pengfei Cui, Chunpei Yu, Wenchao Zhang","doi":"10.1016/j.jssc.2025.125441","DOIUrl":"10.1016/j.jssc.2025.125441","url":null,"abstract":"<div><div>Although ammonium perchlorate (AP) is now one of the most widely used oxidants in solid propellants, it is a great challenge that the energy release is not concentrated during the decomposition of AP due to the two-stage decomposition. In order to address this challenge, we designed a strategy that defects generated by heteroatom-doped (Fe, Ce) catalysts induce electron transfer to promote AP continuous decomposition. Due to the presence of defects, the catalytic active site is generated, which forms a Lewis acid-base pair with NH3, causing NH3 to leave the surface of the reactant rapidly, resulting in the disappearance of the high-temperature decomposition peak. Due to the unique oxygen conduction function of Ce, metal oxides doped with Ce are generally superior to those doped with Fe. Take Co3O4@Ce and Co3O4@Fe, which have the best catalytic effects, as examples. The decomposition temperatures of AP were reduced to 300.16 °C and 340.28 °C respectively, and the activation energies of AP decomposition were reduced to 114.49 kJ/mol and 150.33 kJ/mol respectively, which confirmed that Ce has better catalytic efficiency. In addition, given the oxygen enrichment effect of CeO2, AP tended to dissociate deeply on the crystal plane of Co3O4. The product analysis showed that NHx produced by AP decomposition was oxidized rapidly under the synergistic action of Co and Ce, and more O2 was produced at the same time. As a result, the strategy of constructing defect-rich catalysts by doping atoms has great application prospects in AP catalysis.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125441"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154626","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

Study of LiCl/MIL-101(Cr)@GO composites for water adsorption LiCl/MIL-101(Cr)@GO复合材料的水吸附研究

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-19 DOI: 10.1016/j.jssc.2025.125439

Mengyao Li , Ping Wu , Xiaoli Han , Shanshan Shi , Shiping Zhang , Li Wang , Min Xu , Xiulan Huai

{"title":"Study of LiCl/MIL-101(Cr)@GO composites for water adsorption","authors":"Mengyao Li , Ping Wu , Xiaoli Han , Shanshan Shi , Shiping Zhang , Li Wang , Min Xu , Xiulan Huai","doi":"10.1016/j.jssc.2025.125439","DOIUrl":"10.1016/j.jssc.2025.125439","url":null,"abstract":"<div><div>Adsorption-based thermal energy conversion systems offer a sustainable solution for space heating and cooling applications. However, due to the limited performance of solid adsorbents, the large-scale application of this technology still requires further research. To address this challenge, we developed a composite adsorbent by integrating a graphene oxide (GO)-modified metal-organic framework (MIL-101(Cr)) with LiCl. The material was characterized using a variety of techniques to assess its improvement in three areas: water adsorption performance, heat propagation rate and stability. The synthesized material was systematically characterized to evaluate three key performance parameters: water adsorption capacity, thermal conductivity, and cyclic stability. The optimized composite LMG-3 (90 wt% LiCl) exhibits a tenfold increase in water absorption capacity compared to MIL-101(Cr)@GO at P/P0 = 0.3. The introduction of GO significantly increases the heat diffusion coefficient, and the material exhibits excellent cyclic stability and inhibits salt deliquescence, demonstrating its potential for adsorptive thermal storage applications.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125439"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124670","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 adsorptive removal of toxic organic dyes from water by using a polyoxometalate-modified metal-organic framework composite (P2W16Ni2O62/MIL-101(Cr)/CuFe2O4) as a novel fast nano-adsorbent 多金属氧酸修饰的金属-有机骨架复合材料（P2W16Ni2O62/MIL-101(Cr)/CuFe2O4）作为一种新型快速纳米吸附剂，对水中有毒有机染料进行了磁吸附去除

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-19 DOI: 10.1016/j.jssc.2025.125445

Seyedeh Simin Dakhilpour , Gholamhassan Imanzadeh , Afsoon Jarrah , Mohammad Reza Zamanloo , Ahmad Hosseini-Bandegharaei

{"title":"Magnetic adsorptive removal of toxic organic dyes from water by using a polyoxometalate-modified metal-organic framework composite (P2W16Ni2O62/MIL-101(Cr)/CuFe2O4) as a novel fast nano-adsorbent","authors":"Seyedeh Simin Dakhilpour , Gholamhassan Imanzadeh , Afsoon Jarrah , Mohammad Reza Zamanloo , Ahmad Hosseini-Bandegharaei","doi":"10.1016/j.jssc.2025.125445","DOIUrl":"10.1016/j.jssc.2025.125445","url":null,"abstract":"<div><div>This study focuses on a magnetic nanoadsorbent, P2W16Ni2O62/MIL-101(Cr)/CuFe2O4, demonstrating the significant potential for removing cationic dyes. The synthesized nanosorbent was characterized by FT-IR, XRD, BET, SEM-EDX, sorption capacity and VSM. The obtained results revealed that the nanosorbent has a surface area of 1012.2 m2/g, and notable sorption capacity: 342.12 mg/g for MB, 296.80 mg/g for MG, and 496.56 mg/g for CV. The research optimized the adsorption parameters using Response Surface Methodology (RSM) and Box-Behnken Design (BBD). The optimal conditions included a pH of 10, a dye concentration of 50 mg L−1, and a magnetic nanosorbent amount of 0.03 g/L. The kinetic studies showed that the adsorption of dyes aligns with the pseudo-second-order (PSO) kinetic model and the Langmuir isotherm model, indicating a chemisorption mechanism based on the adsorption energy calculations. The thermodynamic analyses confirmed that the adsorption processes were endothermic and spontaneous. According to the stability tests, the adsorbent retains its structural integrity and chemical composition over five reuse cycles, highlighting its potential for practical applications in wastewater dye removal.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125445"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124672","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

Removal of Cs+ from chloride-containing spent salt by combined precipitation and ion exchange and its glass solidification 沉淀-离子交换法脱除含氯废盐中的Cs+及其玻璃固化

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-19 DOI: 10.1016/j.jssc.2025.125444

Mingshuo He , Rugeng Liu , Wei Han , Meng Zhang , Mei Li

{"title":"Removal of Cs+ from chloride-containing spent salt by combined precipitation and ion exchange and its glass solidification","authors":"Mingshuo He , Rugeng Liu , Wei Han , Meng Zhang , Mei Li","doi":"10.1016/j.jssc.2025.125444","DOIUrl":"10.1016/j.jssc.2025.125444","url":null,"abstract":"<div><div>In order to reduce the volume of nuclear waste, the spent salt after electrolysis refining of spent fuel needs to be purified and the removed radioactive nuclide need to be vitrified. In this work, the radioactive nuclides Cs+ in spent salt was removed by a two-step method, and the waste containing Cs after removal was solidified. The results showed that the total removal rate of Cs+ in spent salt could reach 94 %, and the maximum inclusion ratio of borosilicate glass to precipitated cesium phosphate (Cs3PO4) and zeolite-4A containing cesium could reach 30 wt% and 35 wt%, respectively. The glass samples with the embedding ratio less than or equal to the maximum were found to be all amorphous, uniform and dense. The normalized leaching rate (NRi) of Cs+ in the two types of glass samples were 3.245 × 10−4 g m−2 d−1 and 1.145 × 10−5 g m−2 d−1 on the 28th day, respectively, showing good chemical durability, which met the geological disposal standards.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125444"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106705","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

Synthesis of Ti(Cx, N1-x) powders under different carbothermal reduction-nitridation temperatures and N2 partial pressures 不同碳热还原-氮化温度和N2分压下Ti（Cx, N1-x）粉体的合成

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-19 DOI: 10.1016/j.jssc.2025.125438

Xiao-Dong Kang, Guo-Hua Zhang, Kuo-Chih Chou

{"title":"Synthesis of Ti(Cx, N1-x) powders under different carbothermal reduction-nitridation temperatures and N2 partial pressures","authors":"Xiao-Dong Kang, Guo-Hua Zhang, Kuo-Chih Chou","doi":"10.1016/j.jssc.2025.125438","DOIUrl":"10.1016/j.jssc.2025.125438","url":null,"abstract":"<div><div>Ti(Cx, N1-x) powders were synthesized through a combined approach of carbothermal reduction-nitridation (CRN) and the subsequent Ca treatment. The carbon black and TiO2 were reacted at high temperatures in a N2 atmosphere at a molar ratio of 3:1, followed by the removal of residual carbon using molten Ca. The influences of temperature and N2 partial pressure during the CRN process on the C/N ratio, microstructure, and grain size of the final Ti(Cx, N1-x) were systematically investigated. The prepared Ti(Cx, N1-x) powders exhibited high purity, fine grain size, uniform morphology, good crystallinity, and excellent dispersibility. As the CRN temperature increased, the residual oxygen content gradually decreased, the grain size enlarged, and the C/N ratio increased. A lower N2 partial pressure during the CRN process led to increases in grain size and C/N ratio, and the morphology became closer to spherical. The smallest average grain size of 538 nm was achieved for Ti(C0.31, N0.69) powder synthesized under conditions of 1 atm N2 pressure at 1400 °C.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125438"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106833","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

Synthesis of polyoxometalate compounds based on mechanically activated precursors and study of their physicochemical properties 基于机械活化前体的多金属酸氧化合物的合成及其理化性质的研究

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-19 DOI: 10.1016/j.jssc.2025.125420

Albert S. Akimov , Nikita Zhirov , Igor P. Prosvirin , Evgeny Yu Gerasimov , Akim S. Akimov

{"title":"Synthesis of polyoxometalate compounds based on mechanically activated precursors and study of their physicochemical properties","authors":"Albert S. Akimov , Nikita Zhirov , Igor P. Prosvirin , Evgeny Yu Gerasimov , Akim S. Akimov","doi":"10.1016/j.jssc.2025.125420","DOIUrl":"10.1016/j.jssc.2025.125420","url":null,"abstract":"<div><div>Mechanical activation of molybdenum disulfide was used to obtain mechanocomposites. They are precursors for obtaining molybdenum blues. To synthesize molybdenum blues, the obtained mechanocomposites were reacted with ethyl alcohol under the required conditions. The obtained mechanocomposites, as well as molybdenum blues, were characterized by X-Ray diffraction (XRD), Transmission electron microscopy (TEM), IR spectroscopy and X-ray photoelectron spectroscopy (XPS). For example, a number of absorption bands are localised in the low-wave IR region, which are characteristic of the functional groups of the target compounds. The results of X-ray diffraction in combination with the results of transmission electron microscopy, EDS and XPS indicate the fact of formation of amorphous phase with partially reduced molybdenum in oxidation degrees from +5 to +6 on the obtained mechanocomposites. This fact, as well as blue colouring and characteristic peak in the absorption spectrum at 750 nm indicate the formation of molybdenum blue.</div><div>The approach for obtaining polyoxometallate compounds shows potential as a promising way to obtain stable molybdenum blues.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125420"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124671","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

Diketopyrrolopyrrole-based covalent organic polymer with donor-acceptor structure for efficient near-infrared photothermal conversion 基于二酮吡咯-受体结构的高效近红外光热转换共价有机聚合物

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-17 DOI: 10.1016/j.jssc.2025.125435

Kamran Muzaffar , Jiacheng Gong , Jinsong Chen , Zhiwei Xiao , Umm Y. Umna , Tayyab Sohail Aslam , Syeda Andleeb Zahra Naqvi , Ateeq Ur Rehman Baloch , Rahul Anil Borse , Yan-Xi Tan , Yaobing Wang

{"title":"Diketopyrrolopyrrole-based covalent organic polymer with donor-acceptor structure for efficient near-infrared photothermal conversion","authors":"Kamran Muzaffar , Jiacheng Gong , Jinsong Chen , Zhiwei Xiao , Umm Y. Umna , Tayyab Sohail Aslam , Syeda Andleeb Zahra Naqvi , Ateeq Ur Rehman Baloch , Rahul Anil Borse , Yan-Xi Tan , Yaobing Wang","doi":"10.1016/j.jssc.2025.125435","DOIUrl":"10.1016/j.jssc.2025.125435","url":null,"abstract":"<div><div>Efficient near-infrared (NIR) organic photothermal agents are crucial for the effective ablation of cancer cells; however, their synthesis, high performance, and stability remain challenging. In this work, we report the design and synthesis of a covalent organic polymer (COP), TPDA-DPP-COP, constructed through an optimized Schiff-base condensation between tetra(4-aminophenyl) diamine (TPDA) as the electron donor and diketopyrrolopyrrole (DPP) as the electron acceptor, respectively. The morphology, microscopic structure, optical properties, and donor–acceptor (D–A) conjugation effects of TPDA-DPP-COP were systematically investigated using experimental characterizations and theoretical calculations. Benefiting from its extended conjugation and red-shifted absorption, TPDA-DPP-COP exhibited an outstanding NIR photothermal conversion efficiency of 70.2 % in tetrahydrofuran (THF), reaching a maximum temperature of 43.2 °C within 5 min under 808 nm laser irradiation at 0.5 W/cm2. This study provides a promising strategy for the development of efficient and stable NIR photothermal materials for future biomedical applications.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125435"},"PeriodicalIF":3.2,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106832","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

In-situ Zr-doped nanostructured FeCo2O4 spinel unsupported catalyst for hydrogen production from ammonia decomposition 原位掺zr纳米结构FeCo2O4尖晶石无负载催化剂用于氨分解制氢

IF 3.2 3区化学

Journal of Solid State Chemistry Pub Date : 2025-05-14 DOI: 10.1016/j.jssc.2025.125434

Shanshan Hao, Tao Wang, Anyou Zhou, Songsheng Zheng, Zhaolin Wang

{"title":"In-situ Zr-doped nanostructured FeCo2O4 spinel unsupported catalyst for hydrogen production from ammonia decomposition","authors":"Shanshan Hao, Tao Wang, Anyou Zhou, Songsheng Zheng, Zhaolin Wang","doi":"10.1016/j.jssc.2025.125434","DOIUrl":"10.1016/j.jssc.2025.125434","url":null,"abstract":"<div><div>Ammonia decomposition represents a sustainable pathway for on-demand hydrogen production, yet conventional Fe–Co-based catalysts suffer from thermal sintering and insufficient activity at moderate temperatures. Herein, we report a novel strategy for engineering Zr-doped FeCo2O4 spinel catalysts with low crystallinity via a scalable sol-gel method. The optimized FeCo2O4–Zr0.02-550 catalyst achieved nearly 100 % NH3 conversion at 525 °C under GHSV of 3,000 mL·g-1 cat·h−1. Comprehensive characterization revealed that Zr doping induced multiple synergistic effects: (1) Formation of stable Zr–O–Fe/Co interfacial structures suppressed active site aggregation, maintaining 95 % activity after 80 h of continuous operation; (2) Oxygen vacancy generation and cation valence modulation accelerated N2 desorption and electron transfer kinetics; (3) Enhanced surface acidity and reducibility improved NH3 adsorption and H2 desorption efficiency. This catalyst demonstrates a cost-effective production process and industrial scalability.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"349 ","pages":"Article 125434"},"PeriodicalIF":3.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072646","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