Journal of Solid State Chemistry最新文献

{"title":"A comparative study of influence of isovalent and aliovalent A-site substitutions on the structural, magnetic, and dielectric properties of Sr2CrMoO6 double perovskites","authors":"Jiayuan Gu, Jie Ding, Liangdong Chen, Xinhua Zhu","doi":"10.1016/j.jssc.2024.125037","DOIUrl":"10.1016/j.jssc.2024.125037","url":null,"abstract":"<div><div>We report on a comparative study of the structural, magnetic, and dielectric and properties of isovalent and aliovalent A-site substituted Sr<sub>2-x</sub>A<sub>x</sub>CrMoO<sub>6</sub> (A = Ca, x = 0.0, 0.1, 0.3, 0.5, 0.7, 0.8, 1.0; A = K, La only x = 0.5) double perovskites, which were synthesized <em>via</em> sol-gel process. X-ray diffraction patterns and Rietveld refinements demonstrated that all the Sr<sub>2-x</sub>A<sub>x</sub>CrMoO<sub>6</sub> powders crystallized in a cubic crystal structure with space group of <em>Fm</em> <span><math><mrow><mover><mn>3</mn><mo>‾</mo></mover></mrow></math></span> <em>m</em>. SEM images revealed that the Sr<sub>2-x</sub>A<sub>x</sub>CrMoO<sub>6</sub> powders exhibited a spherical morphology. Their chemical compositions were determined by quantitative energy dispersive X-ray spectroscopy, which were close to the nominal values. FTIR spectra analyses verified the presence of (Cr, Mo)O<sub>6</sub> octahedra in these powders. XPS spectra validated the existence of Sr<sup>2+</sup>, K<sup>+</sup>, Ca<sup>2+</sup>, La<sup>3+</sup>, and Cr<sup>3+</sup> ions in the powders, and oxygen existed in the forms of lattice oxygen and absorbed oxygen respectively, whereas Mo element had a mixed chemical valence state of Mo<sup>4+</sup> and Mo<sup>6+</sup>. The Sr<sub>2</sub>CrMoO<sub>6</sub> (SCMO) powders had a saturation magnetization (<em>M</em><sub>S</sub>) of 0.016 <em>μ</em><sub>B</sub>/f.u. at 2 K, magnetic Curie temperature (<em>T</em><sub>C</sub>) of 337 K, and irreversibility temperature (<em>T</em><sub>irr</sub>) of 329 K where the zero-field cooled (ZFC) and field-cooled (FC) magnetization (M<sub>ZFC</sub> and M<sub>FC</sub>, respectively) curves became bifurcated. A spin-glass behavior was observed at temperature (<em>T</em><sub>B</sub>) of 81 K. Both <em>T</em><sub>irr</sub> and <em>T</em><sub>B</sub> shifted towards low temperature with increasing the external magnetic field. In addition, the M<sub>ZFC</sub> and M<sub>FC</sub> curves became almost overlapped under the external field of 50 kOe, and the spin-glass behavior disappeared. The <em>M</em>-<em>H</em> data demonstrated that both isovalent and aliovalent A-site substitutions could improve the magnetic properties and B-site ordering degree (<em>η</em>) of the SCMO powders. However, isovalent Ca-substitution exhibited more significant enhanced effect on the magnetic properties in comparison with the aliovalent A-site substitutions either by K- or La-substitution. Among the isovalent Ca-substituted Sr<sub>2-x</sub>Ca<sub>x</sub>CrMoO<sub>6</sub> (x = 0.1–1.0) powders, Sr<sub>1.2</sub>Ca<sub>0.8</sub>CrMoO<sub>6</sub> sample had a maximum <em>M</em><sub>S</sub> value of 0.64 <em>μ</em><sub>B</sub>/f.u. at 2 K, over 30 times enhancement of that of the pristine SCMO powders. The Sr<sub>2-x</sub>A<sub>x</sub>CrMoO<sub>6</sub> ceramics exhibit a strong frequency dependent dielectric behavior, which can be well interpreted by Maxwell-Wagner relaxati","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125037"},"PeriodicalIF":3.2,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428159","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}

{"title":"The significant role of Z-scheme band alignment at the heterojunction for the enhanced photocatalytic H2 production in TiO2/BiNbO4/rGO nanocomposite","authors":"A. Meera ,&nbsp;M. Mahalakshmi ,&nbsp;V. Jesintha ,&nbsp;B. Neppolian","doi":"10.1016/j.jssc.2024.125030","DOIUrl":"10.1016/j.jssc.2024.125030","url":null,"abstract":"<div><div>An efficient ternary TiO₂/BiNbO₄/rGO nanocomposite was prepared by a simple wet impregnation process. PXRD confirmed the tetragonal and orthorhombic crystalline natures of titanium dioxide (TiO₂) and bismuth niobate (BiNbO₄) respectively. The loading of BiNbO₄ and reduced graphene oxide (rGO) shifted the light absorption of TiO₂ to a longer wavelength from 400 to 430 nm. The suitable conduction band position of BiNbO₄ facilitated a favourable band alignment to suppress the electron/hole (e⁻/h⁺) recombination in TiO₂ via the Z scheme mechanism at the heterojunction. The excited electrons at the CB of TiO₂ were easily transported via the fast electron accepting and conducting rGO matrix for the surface redox reactions with the improved charge transfer efficiency, which was confirmed by EIS and PL studies respectively. BiNbO₄ and rGO synergistically improved the specific surface area and solar light absorption. EPR analysis confirmed the presence of increased oxygen vacancies at the heterojunction. Hence, the ternary TiO₂/BiNbO₄/rGO nanocomposite demonstrated an enhanced hydrogen evolution (8910 μ mol h⁻¹ g_cat⁻¹) than bare TiO₂ (4820 μ mol h⁻¹ g_cat⁻¹), bare BiNbO₄ (950 μ mol h⁻¹ g_cat⁻¹) and TiO₂/BiNbO₄ (6730 μ mol h⁻¹ g_cat⁻¹) under direct solar light. The optimum of 1 wt % BiNbO₄ and rGO loaded TiO₂ nanocomposite produced twice the H₂ production than the bare TiO₂. This also further confirms that rGO played a major role during the photocatalytic process by highlighting the potential of metal oxides combined with carbon material as an efficient photocatalyst which prominently enhances the H₂ evolution.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125030"},"PeriodicalIF":3.2,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427458","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}

{"title":"Ternary gallide Zr7Pd7–xGa3+x (0 ≤ x ≤ 1.8): Synthesis, crystal and electronic structures","authors":"Volodymyr Babizhetskyy ,&nbsp;Oksana Myakush ,&nbsp;Bogdan Kotur ,&nbsp;Chong Zheng ,&nbsp;Volodymyr Smetana ,&nbsp;Anja-Verena Mudring","doi":"10.1016/j.jssc.2024.125034","DOIUrl":"10.1016/j.jssc.2024.125034","url":null,"abstract":"<div><div>The new ternary compound Zr₇Pd_7-<em>x</em>Ga_3+<em>x</em> (0 ≤ <em>x</em> ≤ 1.8) was synthesized by arc melting the elements under argon and subsequent annealing the ingots at 870 K for 720 h. The polycrystalline samples were characterized by powder X-ray diffraction (XRD) and the crystal structure of the compound was determined from single crystal X-ray diffraction data. Zr₇Pd₇Ga₃ crystallizes with a ternary version of the Zr₇Ni₁₀ type of structure exhibiting statistical mixtures of palladium and gallium atoms on three crystallographically independent nickel sites (<em>oS</em>68, <em>Cmce</em>, <em>a</em> = 12.997(3), <em>b</em> = 9.623(2), <em>c</em> = 9.630(2) Ǻ, <em>Z</em> = 4, <em>R</em>1 = 0.033, w<em>R</em>2 = 0.067 for 719 unique reflections with <em>I</em>_o <em>&gt;</em> 2<em>σ(I</em>_o<em>)</em> and 48 refined parameters). The crystal structure of Zr₇Pd₇Ga₃ is represented by a 3D Pd–Ga framework built of sinusoidal layers of Pd and Ga stacking along the <em>b</em> axis sandwiching the Zr atoms. The homogeneity range of the compound Zr₇Pd_{7–<em>x</em>}Ga_3+<em>x</em> has been refined from powder XRD and EDX data: 0 ≤ <em>x</em> ≤ 1.8; variation of the lattice parameters is the following: <em>a</em> = 13.0174(8)–12.904(3), <em>b</em> = 9.6306(8)–9.559(8), <em>c</em> = 9.6348(8)–9.700(5) Å. Electronic structure calculations have been performed for an idealized model Zr₇Pd₁₀ as well as a model compound Zr₇Pd_6.5Ga_3.5 revealing that the Ga-free Zr₇Pd₁₀ is significantly destabilized by strong Pd–Pd anti-bonding interactions. Substitution of Pd by Ga reduces those, stabilizing Zr₇(Pd,Ga)₁₀ which features strong heteroatomic bonding between Zr and the Pd/Ga substructure, putting it into the class of polar intermetallics.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125034"},"PeriodicalIF":3.2,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel sodium manganese fluorooxalate crystal Na2Mn2(C2O4)2.5F·2H2O: Synthesis, structure, optical and thermal properties","authors":"Sen Ji ,&nbsp;Lei Kang ,&nbsp;Yanyang Han ,&nbsp;Shanshan Liu ,&nbsp;Ye Liu ,&nbsp;Xin Yang ,&nbsp;Kai Feng","doi":"10.1016/j.jssc.2024.125031","DOIUrl":"10.1016/j.jssc.2024.125031","url":null,"abstract":"<div><div>A novel three-dimensional sodium manganese fluorooxalate, Na₂Mn₂(C₂O₄)_2.5F·2H₂O, has been obtained by an ionic-liquid-assisted solvothermal method. Na₂Mn₂(C₂O₄)_2.5F·2H₂O crystallizes in the triclinic <span><math><mrow><mi>P</mi><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> space group with unit cell parameters of <em>a</em> = 7.9129(4) Å, <em>b</em> = 8.8497(4) Å, <em>c</em> = 8.9252(5) Å, <em>α</em> = 74.623(4) ^o, <em>β</em> = 72.361(5) ^o, <em>γ</em> = 78.193(4) ^o, and Z = 2. The basic structural units are Mn1O₆F and Mn2O₅F polyhedra, which are linked by sharing C₂O₄ groups and F atoms to build a three-dimensional framework <span><math><mrow><msup><mmultiscripts><mrow><mo>[</mo><mrow><msub><mtext>Mn</mtext><mn>4</mn></msub><msub><mrow><mo>(</mo><mrow><msub><mi>C</mi><mn>2</mn></msub><msub><mi>O</mi><mn>4</mn></msub></mrow><mo>)</mo></mrow><mn>5</mn></msub><msub><mi>F</mi><mn>2</mn></msub></mrow><mo>]</mo></mrow><mprescripts></mprescripts><mi>∞</mi><mn>3</mn></mmultiscripts><mrow><mn>4</mn><mo>−</mo></mrow></msup></mrow></math></span> with Na⁺ and H₂O occupying the pores. The band gap obtained by UV–Vis–NIR diffuse reflectance is 3.24 eV. In addition, Na₂Mn₂(C₂O₄)_2.5F·2H₂O delivers a moderate birefringence of <span><span>0.064@550</span><svg><path></path></svg></span> nm.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125031"},"PeriodicalIF":3.2,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427455","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}

{"title":"The role of crystallographic orientation on surface properties and ion transport in lithium germanate (Li2GeO3) anodes: A computational approach","authors":"Mayank Shriwastav ,&nbsp;Abhishek Kumar Gupta ,&nbsp;D.K. Dwivedi","doi":"10.1016/j.jssc.2024.125032","DOIUrl":"10.1016/j.jssc.2024.125032","url":null,"abstract":"<div><div>The performance of lithium-ion batteries (LIBs) hinges on the surface properties of their anodes. Compared to the bulk material, the anode surface is more susceptible to environmental changes during lithium (Li) intake and release, directly impacting factors like capacity, cycling stability, and charge/discharge rates. Lithium germanate (Li₂GeO₃, LGO) has emerged as a promising anode material due to its fast Li-ion conduction. While numerous studies have explored performance improvements through various methods, including defect engineering. However, there is currently a lack of atomistic-level understanding of the surface structure. Consequently, despite the importance of precisely understanding the surface to manipulate its different properties, specific surface details of LGO remain unclear. This knowledge gap hinders precise manipulation of surface properties for optimal performance.This study addresses this critical need by employing theoretical calculations to predict the structural, electrochemical characteristics, and Li-ion transport behavior in LGO surfaces. Our results indicate that polar surfaces exhibit lower formation energies compared to non-polar surfaces. Further investigation revealed that Li-terminated surfaces possess the lowest surface energy among various surface terminations. Interestingly, the work function calculations displayed an opposite trend to surface formation energy, with polar surfaces exhibiting the lowest work function values.To explore Li-ion transport, we employed ab initio molecular dynamics simulations. Notably, the (003) surface displayed the highest Li-ion diffusion rate among all considered surfaces.Further analysis of the (001) surface, which exhibited similar diffusion pathways to the (003) surface, revealed a lower diffusion rate.To understand this disparity, nudged elastic band (NEB) simulations were used to estimate the energy barriers for Li-ion migration along each pathway in both structures. Despite sharing similar pathways, the energy barriers in the (003) surface were significantly lower than those in the (001) surface. This finding suggests that the intrinsic energy landscape of the surface plays a crucial role in dictating Li-ion transport behavior.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125032"},"PeriodicalIF":3.2,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358513","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}

{"title":"Structural features of the products based on potassium polytitanate modified in aqueous solutions of ferric sulfate","authors":"Olga Yu Grapenko ,&nbsp;Valery G. Vlasenko ,&nbsp;Alexey T. Kozakov ,&nbsp;Anatoliy V. Nikolskii ,&nbsp;Stanislav P. Kubrin ,&nbsp;Aleksander V. Kozinkin ,&nbsp;Alexander V. Gorokhovsky ,&nbsp;Мaria А. Vikulova ,&nbsp;Elena V. Tretyachenko ,&nbsp;Natalia O. Morozova ,&nbsp;Aleksei G. Fedorenko","doi":"10.1016/j.jssc.2024.125035","DOIUrl":"10.1016/j.jssc.2024.125035","url":null,"abstract":"<div><div>The structure and electronic composition of potassium polytitanate (PPT) powders and the product of their chemical treatment (modification) in the aqueous solution of ferric sulfate (PPT/Fe) have been studied. It has been shown that PPT and PPT/Fe powders consist of X-ray amorphous conglomerates of nano- and submicrosized particles. Further heat treatment of PPT/Fe at 900 °C leads to the formation of a solid solution K_1.5Fe_1.5Ti_6.5O₁₆, which has a hollandite-like crystalline structure. Quantitative characteristics of the local atomic structure of iron ions in the structure of the obtained compounds have been established. Based on the data of Mössbauer spectroscopy, X-ray photoelectron spectroscopy, XANES and EXAFS analyses of Fe K-edge spectra, the mechanism of physico-chemical processes accompanying the PPT particles modification with aqueous solutions of iron (III) salts and their subsequent heat treatment in order to obtain desired functional compounds has been proposed. It has been established that iron and titanium ions consistently change their valence state during the chemical and thermal treatment. The mechanism of structural transformations in the investigated system has been analyzed.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125035"},"PeriodicalIF":3.2,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358347","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}

{"title":"High efficiency degradation of RhB by MIL-88A(Fe)/MoS2 activated persulfate and its mechanism","authors":"Xuechang Ren,&nbsp;Ju An,&nbsp;Suying Ding,&nbsp;Zhenyu Yang,&nbsp;Miao Tian,&nbsp;Ning Fu","doi":"10.1016/j.jssc.2024.125027","DOIUrl":"10.1016/j.jssc.2024.125027","url":null,"abstract":"<div><div>MoS₂/MIL-88A (Fe) composite catalyst was prepared by in-situ formation method. The material was characterized by SEM, TEM, XRD and XPS, and the Rhodamine B(RhB) was activated and degraded by persulfate (PMS). The results showed that M-10/M_1:2 had the best degradation effect on RhB, the rate constant was 0.66420 min⁻¹, and the degradation rate could reach 1.89–14 times that of other doped composite catalysts. The SEM results showed that M − 10 had the least sulfur content, fewer MoS₂ flower layers and more exposed Mo⁴⁺ atoms, which improved the electron transfer efficiency and accelerated the degradation reaction. The XPS spectra before and after M-10/M_1:2 reaction showed that the REDOX reaction of Fe³⁺/Fe²⁺ and Mo⁴⁺/Mo⁶⁺ on the catalyst surface played an important role in the activation of PMS. The results of free radical capture experiment and ESR test showed that the main active substances in M-10/M_1:2/PMS reaction system were SO₄^•−, ¹O₂, •O₂⁻, and •OH, which only played a role in the degradation of RhB. Finally, based on the ESR results of M-10/M_1:2/PMS system and the changes of Fe and Mo elements in XPS characterization before and after the reaction, the degradation mechanism of M-10/M_1:2/PMS system was proposed.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"341 ","pages":"Article 125027"},"PeriodicalIF":3.2,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552438","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}

{"title":"Stability under electron irradiation of some layered hydrated minerals","authors":"M.-N. de Noirfontaine ,&nbsp;M. Courtial ,&nbsp;A. Alessi ,&nbsp;S. Tusseau-Nenez ,&nbsp;E. Garcia-Caurel ,&nbsp;O. Cavani ,&nbsp;C. Cau Dit Coumes ,&nbsp;D. Gorse-Pomonti","doi":"10.1016/j.jssc.2024.125033","DOIUrl":"10.1016/j.jssc.2024.125033","url":null,"abstract":"<div><div>The structural damages caused to some layered hydrated minerals by 2.5 MeV electron irradiation using the SIRIUS platform were studied by powder X-Ray diffraction and, in some cases, by ¹H MAS-NMR spectroscopy. It is clearly demonstrated that the radiation damages are distinguishable from the heating effects. It is shown that: i) in all cases electron irradiation leads to distortions of the unit cell and very limited volume expansion, compared to heating; ii) radiation damages increase with increasing the structural complexity of the mineral; iii) portlandite Ca(OH)₂ and brucite Mg(OH)₂ remain crystalline up to high doses (a few GGy), with appearance of stacking fault disorder especially in brucite; iv) brushite CaHPO₄.2H₂O and gypsum CaSO₄.2H₂O undergo a phase transformation of type amorphization for brushite involving the strongest intralayer H bond between the acidic proton and the phosphate tetrahedral, and decomposition for gypsum involving interlayer H bonds between water molecules.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125033"},"PeriodicalIF":3.2,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358346","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}

{"title":"Fabrication of cost-effective lead-free silver bismuth iodide based mesoscopic Rudorffite solar cells","authors":"R. Isaac Daniel ,&nbsp;R. Govindaraj ,&nbsp;P. Balaji Bhargav ,&nbsp;A.K. Chauhan ,&nbsp;P. Ramasamy","doi":"10.1016/j.jssc.2024.125026","DOIUrl":"10.1016/j.jssc.2024.125026","url":null,"abstract":"<div><div>Lead-free Ag–Bi–I Rudorffite materials, specifically AgBiI₄, Ag₂BiI₅, Ag₃BiI₆ and AgBi₂I₇, have garnered substantial attention as prospective alternatives to lead halide perovskites in solar cell technology. Rudorffite-based solar cells have conventionally employed a mesoporous structure, integrating unstable and costly hole-transport layers (HTLs) in conjunction with noble metal electrodes. This study presents carbon-based, all-inorganic AgBiI₄, Ag₂BiI₅, Ag₃BiI₆ and AgBi₂I₇ Rudorffite solar cells that circumvent the need for HTLs and noble metal electrodes. The absorber layers composed of AgBiI₄, Ag₂BiI₅, Ag₃BiI₆ and AgBi₂I₇ materials were synthesized via melt-solidification. Notably, Ag₂BiI₅ based solar cell achieved PCE of 0.93 % among all the Silver Bismuth Iodide (SBI) devices which is the highest efficiency reported for Ag₂BiI₅ solar cell to date. The corresponding solar cell parameters include an open-circuit voltage (V_oc) of 0.634 V and a short-circuit current (J_sc) of 3.63 mA/cm². Consequently, our work presents a pathway toward developing Rudorffite solar cells with simplified fabrication methods and reduced cost.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125026"},"PeriodicalIF":3.2,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427460","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}

{"title":"Synthesis of spherical amorphous metal‒organic frameworks via an in situ hydrolysis strategy for chiral HPLC separation","authors":"Zi-Xing Wang ,&nbsp;Bao-Ying Guo ,&nbsp;Shu-Yi Chen ,&nbsp;Wan-Ning Liu ,&nbsp;Wei-Ping Ye ,&nbsp;Song-Liang Cai ,&nbsp;Sheng-Run Zheng ,&nbsp;Jun Fan ,&nbsp;Wei-Guang Zhang","doi":"10.1016/j.jssc.2024.125028","DOIUrl":"10.1016/j.jssc.2024.125028","url":null,"abstract":"<div><div>To obtain metal-organic frameworks (MOFs) that are more suitable for applications in liquid chromatography separation, the synthesis of spherical MOF particles of micrometer size is of great importance. Herein, by using an in situ hydrolysis strategy, the reactions of zirconium tetrachloride with terephthalonitrile under optimized water content and temperature give rise to Zr(IV)-carboxylic amorphous metal-organic frameworks (aMOFs) with spherical shapes at the micrometer scale. The aMOF particles can be used as a matrix to fabricate a chiral stationary phase (CSP) after coating cellulose derivative, cellulose-tris(3,5-dimethylphenylcarbamate) (CDMPC), on it. The resulting CSP, namely, CDMPC@aMOF, was further applied to separate enantiomers under high-performance liquid chromatography (HPLC). The results showed that six racemic compounds, including metalaxyl, prothioconazole, <em>trans</em>-stilbene oxide, 1-(1-naphthalenyl)ethanol, 1-phenylethanol and atropine sulfate, were well separated by a CDMPC@aMOF packed column.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125028"},"PeriodicalIF":3.2,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310750","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}