Jun Fan , Qibiao Wang , Shuyan Wang , Hongliang Guan , Bing Han , En Liang , Xianglin Yu , Junbo Li
{"title":"N-doping of β-ketoenamine based covalent organic frameworks (COFs) for enhancing photocatalytic oxidation activity","authors":"Jun Fan , Qibiao Wang , Shuyan Wang , Hongliang Guan , Bing Han , En Liang , Xianglin Yu , Junbo Li","doi":"10.1016/j.jssc.2024.125017","DOIUrl":"10.1016/j.jssc.2024.125017","url":null,"abstract":"<div><p>β-ketoenamine-based COFs are widely investigated due to their high stability, good crystallinity and tunable skeleton structures. Nitrogen doping is one of the effective ways to enhance the catalytic activity of COFs. Herein, N-doping of β-ketoenamine-based (0N-TP-COF, 1N-TP-COF, 2N-TP-COF) COFs were successfully constructed by the Schiff base condensation reaction between 1,3,5-tiformylphloroglucinol (TP) and <em>p</em>-phenylenediamine containing different numbers of nitrogen atoms. Studies showed that the as-prepared COFs exhibited more suitable electronic structure and more electron-rich active sites with the increasing of N atoms. Furthermore, the photocatalytic performance of 4-formylphenylboronic acid transformation was 0N-TP-COF (99 %, 48 h) < 1N-TP-COF (99 %, 32 h) < 2N-TP-COF (99 %, 16 h), and the photocatalytic performance of benzylamine coupling was 0N-TP-COF (99 %, 16 h) < 1N-TP-COF (99 %, 3.5 h) <2N-TP-COF (99 %, 1.5 h), respectively. Note that all N-doping COFs have excellent catalytic activity as well as stability, and 2N-TP-COF exhibits the highest catalytic activity. This work demonstrates that doping of nitrogen atoms is an effective way to enhance photocatalytic performance.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125017"},"PeriodicalIF":3.2,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243348","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}
L.S. Litzbarski , M. Łapiński , T. Klimczuk , M.J. Winiarski
{"title":"Synthesis and physical properties of Sm2PdGe3 in a context of RE2PdGe3 family","authors":"L.S. Litzbarski , M. Łapiński , T. Klimczuk , M.J. Winiarski","doi":"10.1016/j.jssc.2024.125010","DOIUrl":"10.1016/j.jssc.2024.125010","url":null,"abstract":"<div><p>In this study, we present the crystallographic and magnetic characterization of a new intermetallic compound Sm<sub>2</sub>PdGe<sub>3,</sub> which was synthetized by a two stage method employing an eutectic alloy. The investigations carried out exhibited, that Sm<sub>2</sub>PdGe<sub>3</sub> crystallize in AlB<sub>2</sub>-type structure with lattice parameters <em>a</em> = 4.2189(1) Å and <em>c</em> = 4.1031(2) Å. This compound can be classified as a cluster-glass with a spin freezing temperature <em>T</em><sub><em>f</em></sub> = 10.5 K. Furthermore, there were carried out the analysis of the role of the rare earth (<em>RE</em>) elements on the structural parameters of <em>RE</em><sub>2</sub>PdGe<sub>3</sub> and draw a correlation between the <em>RE</em> radius and the unit cell parameters. We show that a deviation from the ideal 1:3 Pd:Ge ratio is necessary to synthesize <em>RE</em><sub>2</sub>PdGe<sub>3</sub> with smaller <em>RE</em> elements.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125010"},"PeriodicalIF":3.2,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243345","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":"Visible-light-driven Z-scheme ZnTe/WO3 heterojunction for simultaneous elimination of tetracycline and Cu(II)","authors":"Hongyan Zhang , Jiehui Huang , Yuxiang Shen , Zuofang Yao , Chenchen Xing , Yanping Hou","doi":"10.1016/j.jssc.2024.125014","DOIUrl":"10.1016/j.jssc.2024.125014","url":null,"abstract":"<div><p>Z-Scheme heterojunction photocatalysts can effectively suppress the recombination of charge carriers while maintaining high redox capacity. In this study, ZnTe/WO<sub>3</sub> (ZW) Z-scheme heterojunction photocatalysts were synthesized using a hydrothermal method, and a series of photocatalytic materials were prepared for the simultaneous removal of tetracycline (TC) and Cu(II) from water. The physicochemical and photoelectrochemical properties of the catalytic materials were characterized through various methods, including SEM, XRD, XPS, and others. The experimental results indicate that the ZW-10 % composite material exhibits the most significant removal efficiency for pollutants. Within 150 min of visible light irradiation, the removal rates for TC and Cu(II) reach 73.8 % and 73.3 %, respectively, representing a substantial improvement compared to individual ZnTe and WO<sub>3</sub>. Free radical capture experiments and electron spin resonance analysis reveal that ·O<sub>2</sub><sup>−</sup> and ·OH are the key reactive species responsible for TC oxidation, while electrons (e<sup>−</sup>) dominate the reduction of Cu(II).</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125014"},"PeriodicalIF":3.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232836","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}
V.B. Nalbandyan , M.A. Evstigneeva , R.V. Bazhan , A.N. Vasiliev , A.N. Bulgakov , T.M. Vasilchikova
{"title":"Ionic substitutions in the Cu3TeO6 structure type and magnetic properties of “medium entropy” Cu3/2Mn1/2Co1/2Fe1/2SbO6","authors":"V.B. Nalbandyan , M.A. Evstigneeva , R.V. Bazhan , A.N. Vasiliev , A.N. Bulgakov , T.M. Vasilchikova","doi":"10.1016/j.jssc.2024.125013","DOIUrl":"10.1016/j.jssc.2024.125013","url":null,"abstract":"<div><p>Cubic antiferromagnet Cu<sub>3</sub>TeO<sub>6</sub> demonstrates interesting magnetic properties. Aimed at modification of them, we tried multiple ionic substitutions in its structure. However, single-phase materials could only be prepared with large fraction of the Jahn-Teller ions (Cu<sup>2+</sup> and Mn<sup>3+</sup>), although formally isostructural bixbyites R<sub>2</sub>O<sub>3</sub> (R<sub>4</sub>O<sub>6</sub>) with R = Sc, In, Tl, Sm…Lu exist with no Jahn-Teller ions. Moreover, ions having highest octahedral crystal field stabilization energy (Ni<sup>2+</sup> and Cr<sup>3+</sup>) were found least tolerable. This points to Cu<sub>3</sub>TeO<sub>6</sub> as a separate structure type, distinct from classical bixbyites. We report crystal structure, magnetic and thermodynamic properties of a rare single-phase multicomponent preparation, Cu<sub>3/2</sub>Mn<sub>1/2</sub>Co<sub>1/2</sub>Fe<sub>1/2</sub>SbO<sub>6</sub>. The <em>dc</em> magnetic studies show that the formation of the ground spin-cluster state at <em>T</em> = 18 K is preceded by a broad anomaly at ∼122 K. Both specific heat and <em>ac</em> susceptibility data rule out the long-range magnetic ordering, in contrast to closely related Cu<sub>2</sub>MSbO<sub>6</sub> (M = Mn or Fe).</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125013"},"PeriodicalIF":3.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243347","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}
Svetlana V. Cherepanova , Egor G. Koemets , Evgeny Yu. Gerasimov , Irina I. Simentsova , Olga A. Bulavchenko
{"title":"Modification of Co3O4 by Al2O3: Influence on the reducibility","authors":"Svetlana V. Cherepanova , Egor G. Koemets , Evgeny Yu. Gerasimov , Irina I. Simentsova , Olga A. Bulavchenko","doi":"10.1016/j.jssc.2024.125012","DOIUrl":"10.1016/j.jssc.2024.125012","url":null,"abstract":"<div><p>In this study, we used a coprecipitation method followed by calcination at 500 °C to synthesize undoped and Al<sup>3+</sup>-doped Co<sub>3</sub>O<sub>4</sub> nanoparticles with different aluminum fractions (x = Al/(Co + Al) = 1/60, 1/30, 1/15, 1/75, 1/6 and 1/5). An addition of Al<sup>3+</sup> ions led to a decrease in the average crystallite size from 29 to 11 nm, and growth of the specific surface area from 28 to 91 m<sup>2</sup>/g. TEM images indicated round and platelet shapes of the nanoparticles. According to HAADF-STEM combined with EDS elemental mapping, the platelet shape particles are Al<sup>3+</sup>-enriched, while the round shape particles are Al<sup>3+</sup>-depleted. The origin of Al<sup>3+</sup> distribution over the oxide volume is conditioned by the state of the hydroxide precursor. It was shown by XRD that the coprecipitation yielded homogeneous hydroxides only for Al fractions x = 0 and x = 1/5. For the intermediate compositions, the precursors represent a mixture of Co<sub>6</sub>(CO<sub>3</sub>)<sub>2</sub>(OH)<sub>8</sub>*H<sub>2</sub>O and Co<sub>0.8</sub>Al<sub>0.2</sub>(OH)<sub>2</sub>(CO<sub>3</sub>)<sub>0.1</sub>*nH<sub>2</sub>O. On the TPR-H<sub>2</sub> profiles, reduction peaks for three (Co,Al)<sub>3</sub>O<sub>4</sub> oxides differing in the Al<sup>3+</sup> concentration (y) can be found. Two of these oxides with y = 0 and y = 0.2 are formed from different hydroxides, and third one with y ∼0.05 is the result of their mutual interaction. In situ XRD allowed us to interpret the TPR peaks correctly and showed that the reduction of all the oxides occurs in two steps. In the first step, Co<sup>3+</sup> → Co<sup>2+</sup>, and (Co<sub>1-y</sub>Al<sub>y</sub>)<sub>3</sub>O<sub>4</sub> oxides transform to (Co,Al)O. In the second step, Co<sup>2+</sup> → Co<sup>0</sup>, and (Co,Al)O is reduced into metallic cobalt. In undoped Co<sub>3</sub>O<sub>4</sub>, Co<sup>3+</sup> → Co<sup>2+</sup> and Co<sup>2+</sup> → Co<sup>0</sup> reduction steps occur at T<sub>1</sub> = 280 and T<sub>2</sub> = 325 °C, respectively. For Al-depleted (Co<sub>1-y</sub>Al<sub>y</sub>)<sub>3</sub>O<sub>4</sub> (y ∼ 0.05 in the interior of particles), both reduction steps shift toward higher temperatures T<sub>1</sub> = 305 and T<sub>2</sub> = 405 °C, respectively. The reduction of Al-enriched (Co<sub>0.8</sub>Al<sub>0.2</sub>)<sub>3</sub>O<sub>4</sub> is more difficult; first and second reduction steps occur at T<sub>1</sub> = 345 and T<sub>2</sub> = 610−690 °C. Therefore, Al<sup>3+</sup> ions have a little effect on the first step and very significantly influence the second one. Additionally, it was shown by TEM that after the reduction at 700 °C metallic cobalt particles were surrounded by the Al-enriched oxide shell. Apparently, that is why the addition of even a small amount of Al<sup>3+</sup> ions prevents a quick sintering of metallic cobalt observed for pure Co<sub>3</sub>O<sub>4</sub>.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125012"},"PeriodicalIF":3.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232833","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":"Computational exploration of alternative mixed-valence double perovskites via cation-anion dual-doping strategy","authors":"Diwen Liu , Hongyan Zeng , Rongjian Sa","doi":"10.1016/j.jssc.2024.125011","DOIUrl":"10.1016/j.jssc.2024.125011","url":null,"abstract":"<div><p>Mixed-valence Cs<sub>2</sub>Au<sup>I</sup>Au<sup>III</sup>X<sub>6</sub> (X = I, Br, Cl) double perovskites (DPs) exhibit high chemical stability and tunable optical band gaps, which renders their potential for photovoltaics. As an alternative, the suitability of novel mixed-valence mixed-halide perovskites for solar cell devices is studied herein. The cation-anion dual-doping strategy is utilized for Cs<sub>2</sub>Au<sup>I</sup>Au<sup>III</sup>X<sub>6</sub>, where the Au<sup>I</sup> cations are substituted by the Ag<sup>I</sup> cations and the anions are doped by different proportions of halide anions. The class of mixed-valence mixed-halide perovskites Cs<sub>2</sub>Ag<sup>I</sup>Au<sup>III</sup>X<sub>4</sub>Y<sub>2</sub> and Cs<sub>2</sub>Ag<sup>I</sup>Au<sup>III</sup>X<sub>2</sub>Y<sub>4</sub> (X = I or Br; X = Br or Cl) is comprehensively investigated with regard to their optoelectronic properties and structural stability. Apart from good thermodynamic and mechanical stability, Cs<sub>2</sub>Ag<sup>I</sup>Au<sup>III</sup>I<sub>4</sub>X<sub>2</sub> (X = Br, Cl) and Cs<sub>2</sub>Ag<sup>I</sup>Au<sup>III</sup>Br<sub>4</sub>Cl<sub>2</sub> exhibit optimum band gaps within 1.2–1.4 eV and have low reduced effective masses (<0.25 <em>m</em><sub>0</sub>) and small exciton binding energies (<110 meV). Additionally, three alternative mixed-halide DPs show high visible-light absorption. Ultimately, the simulated maximum efficiency is within 29–31 % for three novel mixed-halide DPs. Considering structural stability and optoelectronic properties, Cs<sub>2</sub>Ag<sup>I</sup>Au<sup>III</sup>I<sub>4</sub>Br<sub>2</sub> is expected to be an appropriate candidate for high-efficiency thin-film solar cells. The theoretical prediction of mixed-valence mixed-halide DPs can provide an attractive route to discover high-performance photovoltaic materials.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125011"},"PeriodicalIF":3.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229296","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}
Zhuoyin Deng , Lianchao Wang , Tianqi Chen , Ruiying Fu , Cheng Zhang , Kuaibing Wang
{"title":"Stable metal-organic frameworks with Zr6 clusters for alkaline battery-supercapacitor devices","authors":"Zhuoyin Deng , Lianchao Wang , Tianqi Chen , Ruiying Fu , Cheng Zhang , Kuaibing Wang","doi":"10.1016/j.jssc.2024.125009","DOIUrl":"10.1016/j.jssc.2024.125009","url":null,"abstract":"<div><p>An alkaline-stable Zr-based material, PCN-777, has been elected and solvothermally prepared by reacting ZrOCl<sub>2</sub> with the tripodal linker 4,4′,4″-<em>s</em>-triazine-2,4,6-triyl-tribenzoate (H<sub>3</sub>TATB). This powder material exhibits an irregular octahedron motif, providing good stability and high-power density when it is employed as electrode material for supercapacitors (SCs). The results indicate that the specific capacity, under a three-electrode configuration, is 291.9 C g<sup>−1</sup> at a current density of 1.5 A g<sup>−1</sup> obtained from the chronopotentiometry charge-discharge test. Assembled into a two-electrode system with activated carbon (AC) negative, the corresponding battery-supercapacitor device denoted as PCN-777//AC delivers a specific capacitance of 48.72 F g<sup>−1</sup> at the constant current-density value of 0.5 A g<sup>−1</sup>. Besides, this device delivered a maximum energy density of 17.3 Wh kg<sup>−1</sup> within the power-density value of 399 W kg<sup>−1</sup>, an excellent alkaline-endurance life during 2000 unceasing cycles and practical applications in powering LEDs, suggesting the potential practicality under strong alkaline surroundings. Furthermore, the structural alteration before and after long-term cycling has also been investigated.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125009"},"PeriodicalIF":3.2,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232835","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}
Sethumathavan Vadivel , P. Sujita , Bappi Paul , Harshavardhan Mohan
{"title":"α-Bi2O3 tubular rods coated on Bi2O2CO3 nanosheets for high-performance asymmetric supercapacitor applications","authors":"Sethumathavan Vadivel , P. Sujita , Bappi Paul , Harshavardhan Mohan","doi":"10.1016/j.jssc.2024.125008","DOIUrl":"10.1016/j.jssc.2024.125008","url":null,"abstract":"<div><p>Mixed phases of bismuth oxide nanostructures as an active electrode material in supercapacitor applications have recently gained huge research interest. In this study, the layered Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> nanosheets and the secondary phase of α-Bi<sub>2</sub>O<sub>3</sub> tubular rods named Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>/α-Bi<sub>2</sub>O<sub>3</sub> heterostructure have been synthesized and utilized for supercapacitor applications. The crystal nature and microstructure of the Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>/α-Bi<sub>2</sub>O<sub>3</sub> heterostructure were initially confirmed by powder X-ray diffraction (<em>p</em>-XRD), Raman, UV-Vis diffuse reflectance spectroscopy (UV-DRS, absorbance), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) studies. X-ray photoelectron spectroscopy (XPS) measurements have investigated the oxidation states and chemical binding energies. Regarding the electrochemical performances, the Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>/α-Bi<sub>2</sub>O<sub>3</sub> heterostructure as electro-active material delivered a maximum specific capacitance (C<sub>s</sub>) value of 635 F g<sup>−1</sup> at the given current density value of 1 A g<sup>−1</sup> in a conventional three-electrode mode. A coin cell type electrode has been fabricated using Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>/α-Bi<sub>2</sub>O<sub>3</sub> heterostructure, resulting in an asymmetric supercapacitor device cell (ASC), which has a C<sub>s</sub> of 112 F g<sup>− 1</sup> (at 1 A g<sup>− 1</sup>) and a power density and energy density values of 515 W kg<sup>−1</sup> and 22.5 Wh kg<sup>−1</sup> respectively. The two supercapacitor electrodes in sequence effectively ignite the red-light-emitting diode (LED). Moreover, in the ASC type Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> /α-Bi<sub>2</sub>O<sub>3</sub> heterostructure, the specific capacitance value was slightly reduced to 12.3 % by 2000 cycles, showing favourable cyclic performance and stability during the electrochemical process. Based on the above-mentioned characterization, the appropriate electrochemical performances of Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>/α-Bi<sub>2</sub>O<sub>3</sub> tubular rod heterostructures make them a promising candidate for future energy storage devices.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125008"},"PeriodicalIF":3.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232834","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":"Design and preparation of carbon-coated NaZnFe(MoO4)3 composite as novel anode materials for lithium/sodium-ion batteries","authors":"Xin Zhao, Xiuxia Lu, Limin Zhang, Jianyin Zhang","doi":"10.1016/j.jssc.2024.125007","DOIUrl":"10.1016/j.jssc.2024.125007","url":null,"abstract":"<div><p>The investigation of new anode materials with novel crystal structure and high ionic conductivity is of great significance for potential applications in lithium/sodium-ion batteries. Herein, carbon-coated NaZnFe(MoO<sub>4</sub>)<sub>3</sub> composite was produced by solid state method coupled with the mechanical ball milling technique. The crystal and morphology were accurately confirmed by XRD, XPS and SEM techniques. When tested with lithium-ion batteries, the charging capacity reached an impressive 1005 mA h g<sup>−1</sup> during the initial cycle and 840 mA h g<sup>−1</sup> after 50 cycles, resulting in a capacity retention of 84.2 %. This performance is 40 % higher than that of the sample without a carbon layer coating. When utilized as an anode for sodium-ion batteries, the carbon-coated NaZnFe(MoO<sub>4</sub>)<sub>3</sub> composite electrode exhibited a remarkable specific capacity of 152 mA h g<sup>−1</sup> and a high capacity retention of 74.9 % after 100 cycles at a rate of 100 mA g<sup>−1</sup>. Furthermore, the charge capacity was measured at 105 mA h g<sup>−1</sup> after 500 cycles test conducted at 500 mA g<sup>−1</sup>, with a capacity retention of 86.0 %. The advantages of polyanionic molybdate NaZnFe(MoO<sub>4</sub>)<sub>3</sub> combined with the simple carbon coating strategy make it possible to application in the next generation of Li/Na secondary batteries.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125007"},"PeriodicalIF":3.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229295","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":"Efficient palladium ion adsorption and catalyst preparation from pharmaceutical wastewater using amino-functionalized Ti3C2","authors":"Dancheng Zhu, Yonghui Lin, Changhui Chen, Hao Xu, Jiabin Shen, Jun Qiao, Chao Shen","doi":"10.1016/j.jssc.2024.125006","DOIUrl":"10.1016/j.jssc.2024.125006","url":null,"abstract":"<div><p>This paper reports the recovery and reuse of Pd ions from pharmaceutical wastewater using amino-modified Ti<sub>3</sub>C<sub>2</sub>. Ti<sub>3</sub>C<sub>2</sub>–NH<sub>2</sub> was synthesized by modifying (3-aminopropyl)triethoxysilane and the successful substitution of some surface functional groups of Ti<sub>3</sub>C<sub>2</sub>; the decrease in material thickness was verified by characterization. This study revealed that the presence of amino groups significantly enhanced the Pd(II) adsorption capacity of Ti<sub>3</sub>C<sub>2</sub>. The effects of the adsorbent material, adsorbent dosage, pH, initial concentration of Pd ions, presence of competing cations, and contact time on the adsorption performance were investigated. The maximum adsorption capacity of 20 mg of Ti<sub>3</sub>C<sub>2</sub>–NH<sub>2</sub> was 986.65 mg/g in 100 ml of a Pd-ion solution with an initial concentration of 200 mg/l at pH 3. A pseudo-second-order kinetic model fitted well with the experimentally obtained rate data, indicating that the main mode of Pd-ion removal by Ti<sub>3</sub>C<sub>2</sub>–NH<sub>2</sub> was via chemical reduction. Finally, the catalyst exhibited excellent performances during the photocatalytic and Suzuki coupling reactions with yields of 81 % and 95 %, respectively. The results demonstrated that Ti<sub>3</sub>C<sub>2</sub>–NH<sub>2</sub> is an excellent material for adsorbing Pd ions and can effectively recycle these ions from pharmaceutical wastewater.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"340 ","pages":"Article 125006"},"PeriodicalIF":3.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162716","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}