Transition Metal Chemistry最新文献

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Low-crystallinity FeP nanosheets as efficient electrocatalyst for hydrogen evolution 低结晶度FeP纳米片作为高效析氢电催化剂
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-12-23 DOI: 10.1007/s11243-024-00619-1
Meilian Gao, Zhongping Ren, Chun Ouyang, Pingping Gao, Ting Lei, Tao Zhou
{"title":"Low-crystallinity FeP nanosheets as efficient electrocatalyst for hydrogen evolution","authors":"Meilian Gao,&nbsp;Zhongping Ren,&nbsp;Chun Ouyang,&nbsp;Pingping Gao,&nbsp;Ting Lei,&nbsp;Tao Zhou","doi":"10.1007/s11243-024-00619-1","DOIUrl":"10.1007/s11243-024-00619-1","url":null,"abstract":"<div><p>Low-crystallinity and ultrathin iron phosphide nanosheets loading on carbon paper (FeP sheets/CP) were synthesized by hydrothermal and solid–gas phosphating method, acting as an efficient self-supporting electrode for hydrogen evolution reaction (HER). Compared with FeP cubes/CP and FeP rods/CP composites, FeP sheets/CP composites exhibit higher specific surface area due to its lamellar structure favoring the exposure of active sites. Meanwhile, the FeP sheet exhibits low crystallinity due to the addition of surfactant and low-boiling-point ethanol solvent. Electrochemical measurements showed that FeP sheets/CP composites showed great electrocatalytic activity against HER, with overpotentials of only 73 and 156 mV at current density of 10 mA cm<sup>−2</sup> in 0.5 M H<sub>2</sub>SO<sub>4</sub> and 1.0 M KOH, respectively.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"227 - 240"},"PeriodicalIF":1.6,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Two polymolybdate-based hybrid compounds constructed from monodentate imidazolated naphthalene ligand with capacitive performance 两种由单齿咪唑萘配体构成的具有电容性能的多钼酸盐基杂化化合物
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-12-20 DOI: 10.1007/s11243-024-00625-3
Ya−shuang Zhu, Xin−yu Zhao, Wei Zhang, Xiang Wang
{"title":"Two polymolybdate-based hybrid compounds constructed from monodentate imidazolated naphthalene ligand with capacitive performance","authors":"Ya−shuang Zhu,&nbsp;Xin−yu Zhao,&nbsp;Wei Zhang,&nbsp;Xiang Wang","doi":"10.1007/s11243-024-00625-3","DOIUrl":"10.1007/s11243-024-00625-3","url":null,"abstract":"<div><p>The development of polyoxometalate-based hybrid compounds offered a hopeful opportunity to develop capacitor electrode materials. Herein, two new polyoxometalate-based hybrid compounds, [Cu(4 − INCN)<sub>2</sub>(ε − Mo<sub>8</sub>O<sub>26</sub>)<sub>0.5</sub>] (<b>1</b>) and [Zn(H<sub>2</sub>O)(4 − INCN)<sub>3</sub>(β − Mo<sub>8</sub>O<sub>26</sub>)<sub>0.5</sub>], were synthesized under hydrothermal condition by using 4 − imidazol − 1 − yl − naphthalene − 1 − carbonitrile (4 − INCN) as N-donor ligand. The [ε − Mo<sub>8</sub>O<sub>26</sub>]<sup>4−</sup> and [β − Mo<sub>8</sub>O<sub>26</sub>]<sup>4−</sup> anions were involved in the structures of two compounds, respectively. Compound <b>1</b> displayed a two-dimensional layer structure, where the [ε − Mo<sub>8</sub>O<sub>26</sub>]<sup>4−</sup> anions were gathered by Cu (II) ions to produce a two-dimensional structure with the 4 − INCN as monodentate organic ligands hanged on the both sides. In the structure of compound <b>2</b>, the aggregation of [β − Mo<sub>8</sub>O<sub>26</sub>]<sup>4−</sup> and Zn (II) ions resulted in a one-dimensional chain, which was decorated by the 4-INCN ligands through coordination with Zn (II) ions. Two compounds as electrode materials provided specific capacitances of 1092 F g<sup>–1</sup> for <b>1</b> and 731 F g<sup>–1</sup> for <b>2</b> at the current densities of 1 A g<sup>–1</sup>, and showed excellent capacitance retention rates after 1000 cycles. These findings provided a possible approach in the preparation of POM-based hybrid compounds employed as capacitor electrode materials.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 3","pages":"313 - 322"},"PeriodicalIF":1.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Fabrication and impact on photocatalytic activity of Cu-doped ZnO/SnO2 nanostructures with for enhancing the electrochemical performance cu掺杂ZnO/SnO2纳米结构的制备及其对光催化活性的影响
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-12-19 DOI: 10.1007/s11243-024-00626-2
Hasna Abdullah Alali, K. Omri, Sajid Ali Ansari, K. Alamer, O. Saber, H. Mahfoz Kotb, Z. Alhashem, Shrouq H. Aleithan
{"title":"Fabrication and impact on photocatalytic activity of Cu-doped ZnO/SnO2 nanostructures with for enhancing the electrochemical performance","authors":"Hasna Abdullah Alali,&nbsp;K. Omri,&nbsp;Sajid Ali Ansari,&nbsp;K. Alamer,&nbsp;O. Saber,&nbsp;H. Mahfoz Kotb,&nbsp;Z. Alhashem,&nbsp;Shrouq H. Aleithan","doi":"10.1007/s11243-024-00626-2","DOIUrl":"10.1007/s11243-024-00626-2","url":null,"abstract":"<div><p>This study employed the ball milling process to successfully craft nanostructures of Cu-doped ZnO/SnO<sub>2</sub> (<i>ZOSn/Cu</i>), which were thoroughly characterized through various methods. The X-ray diffraction (<i>XRD</i>) analysis revealed the presence of the Zn<sub>2</sub>SnO<sub>4</sub> cubic spinel phase in the nanostructure samples, along with diffraction peaks corresponding to ZnO or SnO<sub>2</sub> phases. Notably, the photocatalytic degradation performance of the structured catalysts was greatly improved compared to undoped ZOSn/Cu nanostructures, achieving MB elimination rates of 60% and 80% after 120 min of irradiation, with an overall degradation of approximately 90%. The ZOSn/Cu electrode, designed for energy storage, demonstrated superior performance, boasting a specific capacitance of 380.0 Fg<sup>−1</sup>, outperforming the pure ZOSn/Cu electrode. Its trimetallic composition of zinc, copper, and tin contributed to enhanced electrochemical properties. This electrode demonstrated excellent cyclic stability, maintaining around 90% of its capacity, along with key characteristics like corrosion resistance, high conductivity, and a wealth of active sites. These properties make it highly promising for advanced energy storage applications.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 3","pages":"323 - 333"},"PeriodicalIF":1.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Fe2+ removal from laterite nickel-ore leaching pregnant solutions: optimization and kinetics 红土镍矿浸出液中Fe2+的去除研究:优化及动力学
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-12-18 DOI: 10.1007/s11243-024-00624-4
Flaviana Yohanala Prista Tyassena, Widya Almaidah Kusumah, Syafirna Aisyah Cantika, Alya Rifaya Fauzia, Fitri Junianti, Syardah Ugra Al Adawiyah, Gyan Prameswara
{"title":"Study of Fe2+ removal from laterite nickel-ore leaching pregnant solutions: optimization and kinetics","authors":"Flaviana Yohanala Prista Tyassena,&nbsp;Widya Almaidah Kusumah,&nbsp;Syafirna Aisyah Cantika,&nbsp;Alya Rifaya Fauzia,&nbsp;Fitri Junianti,&nbsp;Syardah Ugra Al Adawiyah,&nbsp;Gyan Prameswara","doi":"10.1007/s11243-024-00624-4","DOIUrl":"10.1007/s11243-024-00624-4","url":null,"abstract":"<div><p>This research offers substantial insights into improving the hydrometallurgical processing of nickel ores, with a particular emphasis on minimizing impurities to meet the demands of modern industries, such as electric vehicle battery manufacturing. The study focuses on optimizing iron (Fe) removal from nickel laterite ore pregnant leach solution (PLS) using Response Surface Methodology (RSM), examining key variables including agitation speed, precipitation temperature, and precipitation duration. Employing a two-stage precipitation process with calcium carbonate (CaCO₃), this research concentrates specifically on second-stage Fe removal. This stage aimed to maximize Fe<sup>2</sup>⁺ removal efficiency while minimizing losses of valuable metals. Experimental results indicated an optimal Fe removal efficiency of 10.93% during the second stage and achieved under conditions of 450 rpm agitation, 90 min of precipitation, and a temperature of 90 °C, yielding a total Fe removal rate of 98.74%. Kinetic analysis across first-, second-, and third-order models suggests that the third-order model exhibits the highest <i>R</i><sup>2</sup>; however, similar <i>R</i><sup>2</sup> values across models prevented conclusive determination of the reaction order. The activation energy (Ea) derived from this study is 12.99 kJ/mol, indicating energy-efficient Fe precipitation. Characterization of the precipitate via X-ray fluorescence (XRF) and X-ray diffraction (XRD) confirmed hematite (Fe₂O₃) and goethite (FeOOH) as primary Fe compounds, along with calcium sulfate (CaSO₄), which may hydrate to form gypsum. These findings provide valuable insights into optimizing Fe removal in nickel laterite ore processing, demonstrating high Fe removal efficiency under controlled operational parameters.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 3","pages":"301 - 311"},"PeriodicalIF":1.6,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Self-assembled heterometallic Cu(II)–Na(I) coordination polymer with salen-type Schiff base ligand: structural analysis, antimicrobial, DFT and molecular docking study 带有salen型席夫碱配体的自组装异金属Cu(II) -Na (I)配位聚合物:结构分析、抗菌、DFT和分子对接研究
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-12-09 DOI: 10.1007/s11243-024-00621-7
Sandeepta Saha, Niladri Biswas, Manas Chowdhury, Kamal Kumar Ghosh, Corrado Rizzoli, Nayim Sepay, Sharmila Chakraborty, Mukut Chakraborty, Chirantan Roy Choudhury
{"title":"Self-assembled heterometallic Cu(II)–Na(I) coordination polymer with salen-type Schiff base ligand: structural analysis, antimicrobial, DFT and molecular docking study","authors":"Sandeepta Saha,&nbsp;Niladri Biswas,&nbsp;Manas Chowdhury,&nbsp;Kamal Kumar Ghosh,&nbsp;Corrado Rizzoli,&nbsp;Nayim Sepay,&nbsp;Sharmila Chakraborty,&nbsp;Mukut Chakraborty,&nbsp;Chirantan Roy Choudhury","doi":"10.1007/s11243-024-00621-7","DOIUrl":"10.1007/s11243-024-00621-7","url":null,"abstract":"<div><p>In this work, one new heterometallic Cu(II)/Na(I) 3D coordination polymer [CuNa(H<i>hpmet</i>)(H<sub>2</sub>O)(OH)]<sub>n</sub> (<b>1</b>) has been synthesized by using the Schiff base ligand namely, 2-[(<i>E</i>)-(2-hydroxyphenyl)methyleneamino]terephthalic acid [H<sub>3</sub><i>hpmet</i>], Cu(NO<sub>3</sub>)<sub>2</sub>.6H<sub>2</sub>O and NaOH. Complex <b>1</b> was characterized by elemental analysis, FT-IR, UV–Vis, NMR spectroscopic measurements along with and single-crystal X-ray diffraction study. The single-crystal X-ray diffraction (XRD) analysis reveals that in complex <b>1</b>, the copper (II) adopts a distorted square pyramidal geometry with the addition index parameter (<i>τ</i>) value 0.018 whereas Na(I) center possess tetrahedral geometry. Here, DFT study was carried out to give insight in HOMO–LUMO energy gap, MEP surface and topology analysis whereas Hirshfeld surface (HS) study further points toward packing interactions. In addition, complex <b>1</b> was investigated for its antibacterial efficacy toward Gram-positive and Gram-negative strains. Molecular docking assessed antibacterial potency of the complex <b>1</b> toward protein molecules.</p><h3>Graphical Abstract</h3><p>One new heterometallic Cu(II)/Na(I) 3D coordination polymer [CuNa(H<i>hpmet</i>)(H<sub>2</sub>O)(OH)]<sub>n</sub> (<b>1</b>) has been synthesized and characterized. Complex <b>1</b> was characterized by elemental analysis, FT-IR, UV–Vis spectroscopic measurements and single-crystal X-ray diffraction study. The X-ray diffraction (XRD) analysis reveals that in complex <b>1</b>, the copper (II) and Na(I) centers adopt a distorted square pyramidal and tetrahedral coordination geometry, respectively. The existence of vibrational structural distortion and intermolecular non-covalent interactions in complex <b>1</b> is well explained on the basis of Hirshfeld surface (HS) analysis. The high chemical reactivity of complex <b>1</b> was due to its very small HOMO–LUMO energy gap calculated by using density functional theory.</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 3","pages":"253 - 268"},"PeriodicalIF":1.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Ponceau S dye decolorization during the Fe(II)/UV/Chlorine and Cu(II)/UV/Chlorine processes: experimental and theoretical study Fe(II)/UV/Chlorine 和 Cu(II)/UV/Chlorine 过程中的庞色 S 染料脱色:实验和理论研究
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-11-29 DOI: 10.1007/s11243-024-00618-2
Baylassane Chatib, Yasmine Laftani, Redouan Hammal, Abdelghani Boussaoud, Mohsine Hachkar
{"title":"Ponceau S dye decolorization during the Fe(II)/UV/Chlorine and Cu(II)/UV/Chlorine processes: experimental and theoretical study","authors":"Baylassane Chatib,&nbsp;Yasmine Laftani,&nbsp;Redouan Hammal,&nbsp;Abdelghani Boussaoud,&nbsp;Mohsine Hachkar","doi":"10.1007/s11243-024-00618-2","DOIUrl":"10.1007/s11243-024-00618-2","url":null,"abstract":"<div><p>Researchers are increasingly studying and practicing advanced oxidation processes (AOPs) for micropollutant abatement in drinking water treatment and potable water reuse. This study conducted the comparison of the UV/chlorine, Fe (II)/UV/Chlorine, and Cu (II)/UV/Chlorine processes for the degradation of Ponceau S azo dye aqueous solution. The experimental study shows an enhancement in the degradation rate of PS dye in which complete degradation was obtained at 10 min reaction time when Fe<sup>2+</sup> and Cu<sup>2+</sup> were added to the solution. This improvement is due to catalyzing HOCl by ferrous and copper ions.</p><p>Using the density functional theory (DFT) with the hybrid method B3LYP by 6–311 + G(d,p) basis set, all theoretical calculations and optimum geometric parameters have been computed. We are able to identify Ponceau's electronic and energetic actions thanks to this investigation. Natural population analysis (NPA) and the Mulliken population method have both been researched. The parr function has been used to study the molecule's <span>({P}_{k}^{-})</span> and <span>({P}_{k}^{+})</span> local reactivity. To visualize the charge transfer between the lone pairs and localized bonds, natural bond orbital (NBO) analysis is performed. DFT is also used to examine molecular electrostatic potential (MEP) and to describe orbital hybridization. The study's findings suggest that both processes are viable for dye removal in water treatment, though further optimization of operating conditions, such as pH and metal ion concentration, could further improve performance.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"219 - 226"},"PeriodicalIF":1.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Characterization and kinetics of low-TENORM zirconium oxychloride production from zircon sand 锆石砂制备低tenorm氯化氧化锆的表征及动力学研究
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-11-28 DOI: 10.1007/s11243-024-00620-8
Harry Supriadi, Herry Poernomo, Kris Tri Basuki, Widi Astuti, Suyanti Suyanti, Tri Handini, Novita Sukma Ayatillah, Agus Taftazani, Gyan Prameswara
{"title":"Characterization and kinetics of low-TENORM zirconium oxychloride production from zircon sand","authors":"Harry Supriadi,&nbsp;Herry Poernomo,&nbsp;Kris Tri Basuki,&nbsp;Widi Astuti,&nbsp;Suyanti Suyanti,&nbsp;Tri Handini,&nbsp;Novita Sukma Ayatillah,&nbsp;Agus Taftazani,&nbsp;Gyan Prameswara","doi":"10.1007/s11243-024-00620-8","DOIUrl":"10.1007/s11243-024-00620-8","url":null,"abstract":"<div><p>Zirconium oxychloride (ZOC) is a valuable derivative product of zircon sand processing extensively used in applications such as ceramics, antiperspirants, and electronic components. However, challenges in ZOC synthesis arise from the limited data on the kinetics of critical processes, particularly acid leaching and high radioactivity in the final product. This study addresses these issues by evaluating the kinetics of the leaching process and synthesizing low-TENORM ZOC. The ZOC synthesis involves vital steps, including alkaline fusion, decantation, acid leaching, centrifugation, and crystallization. The results indicated that increasing the temperature and leaching duration improved the recovery, reaching a maximum of 78.06% at 90 °C for 120 min. An ash layer diffusion model best described the leaching process with an apparent activation energy (Ea) of 15.3922 kJ/mol, indicating a diffusion-controlled mechanism. Furthermore, the study successfully synthesized ZOC with alpha and beta radioactivity levels of 0.091 and 0.908 Bq/g, respectively, meeting the regulatory standards for TENORM in Indonesia. These findings provide important insights for improving ZOC synthesis while addressing radioactivity concerns.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 3","pages":"241 - 251"},"PeriodicalIF":1.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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, crystal structure, theoretical investigation and catalytic activity study of mononuclear nickel(II) complex 单核镍(II)配合物的合成、晶体结构、理论研究及催化活性研究
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-11-27 DOI: 10.1007/s11243-024-00622-6
Manisha Das, Debashis Ray
{"title":"Synthesis, crystal structure, theoretical investigation and catalytic activity study of mononuclear nickel(II) complex","authors":"Manisha Das,&nbsp;Debashis Ray","doi":"10.1007/s11243-024-00622-6","DOIUrl":"10.1007/s11243-024-00622-6","url":null,"abstract":"<div><p>A mononuclear square planar complex of [Ni(<i>o</i>-val)<sub>2</sub>]·2H<sub>2</sub>O (<b>NiL</b><sub><b>2</b></sub>) (where <i>o</i>-val is <i>o</i>-vanillin anion) has been synthesized by reacting nickel(II) chloride hexahydrate with <i>o</i>-vanillin followed by characterization of the complex by UV–Vis and FT-IR spectroscopic techniques and single-crystal X-ray diffraction analysis technique. Theoretically calculated IR frequencies well matched with the experimental data in solid state. HOMO–LUMO energy of the complex has been calculated in gas phase as well as in solvent phase (MeOH, EtOH and DMF) to predict the kinetic stability of the complex. Presence of H-bonding interaction within the complex with lattice water molecule was supported by Hirshfeld surface analysis, and the calculated H-bonding energy was found to be 7.5368 kJ/mol. Complex <b>NiL</b><sub><b>2</b></sub> (L = <i>o</i>-val) was found to be active for catalysing the oxidation of 3,5-DTBCH<sub>2</sub> to 3,5-DTBQ under aerobic condition in methanol solvent with turnover number (<i>k</i><sub>cat</sub>) 230 h<sup>‒1</sup>. Phenoxazinone synthase activity of the complex NiL<sub>2</sub> was also investigated using 2-aminophenol as a model substrate in methanol medium, and the <i>k</i><sub>cat</sub>value was found to be 45 h<sup>‒1</sup>.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 3","pages":"269 - 281"},"PeriodicalIF":1.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Hierarchically assembled palladium catalysts: preparation of heterogeneous biocatalysts via a facial route for the Heck coupling reaction 分层组装钯催化剂:通过Heck偶联反应的表面途径制备多相生物催化剂
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-11-24 DOI: 10.1007/s11243-024-00617-3
Maryam Robati, Eskandar Kolvari, Shakiba Darvish Alipour Astaneh
{"title":"Hierarchically assembled palladium catalysts: preparation of heterogeneous biocatalysts via a facial route for the Heck coupling reaction","authors":"Maryam Robati,&nbsp;Eskandar Kolvari,&nbsp;Shakiba Darvish Alipour Astaneh","doi":"10.1007/s11243-024-00617-3","DOIUrl":"10.1007/s11243-024-00617-3","url":null,"abstract":"<div><p>The scientific community has long been intrigued by the potential practical applications of metal nanoparticles. In this research, we developed cost-effective and easily accessible palladium nanoparticle (Pd-NP)-supported biocatalysts using natural materials. Our main challenge was to ensure an even distribution of Pd-NPs on the bacterial surface while preventing their detachment during the reaction. We successfully addressed this challenge by employing a suitable synthesis method and covering the Pd-NP-coated bacteria with sericin. In our approach, we synthesized Pd-NPs using an in-situ method. In brief, we adsorbed Pd(II) ions onto the bacterial surface and then reduced them using sodium borohydride. Subsequently, we used a sericin solution to enhance the catalytic system’s resistance to leaching and mechanical forces (such as shaking and drying). We thoroughly characterized the morphology and structure of the heterogeneous biocatalysts prepared using FTIR, TGA, EDX, SEM, XRD, and TEM techniques. The catalytic efficiency of the bacteria-Pd-sericin nano-biocomposite was evaluated in the Heck coupling reaction. Our biocatalyst demonstrated high catalytic activity, rapid reaction times, and exceptional reusability, remaining active for up to four successive reaction cycles.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"207 - 217"},"PeriodicalIF":1.6,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 facile synthesis of spherical Cu-Ag architectures and their excellent catalytic performance 球形Cu-Ag结构的简单合成及其优异的催化性能
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-11-23 DOI: 10.1007/s11243-024-00616-4
Tianhang Han, Kaisheng Yao, Zixu Wang, Han Li, Haili Zhao
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