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Temperature dependence of collision frequencies in gas and plasma systems: a two-dimensional simulation study 气体和等离子体系统中碰撞频率的温度依赖性:二维模拟研究
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-02-01 DOI: 10.1007/s11696-025-03917-9
Ahmed Y. Owaid, Hanaa E. Jasim
{"title":"Temperature dependence of collision frequencies in gas and plasma systems: a two-dimensional simulation study","authors":"Ahmed Y. Owaid,&nbsp;Hanaa E. Jasim","doi":"10.1007/s11696-025-03917-9","DOIUrl":"10.1007/s11696-025-03917-9","url":null,"abstract":"<div><p>A two-dimensional simulation was employed to investigate the influence of gas temperature on the collision frequency for both particle–wall and particle–particle collisions. The study examined the collision frequencies within the common temperature range of 0–100 °C. The results demonstrated that the particle–wall collision frequency was proportional to <span>(sqrt T)</span>, whereas the particle–particle collision frequency was proportional to <span>(1/sqrt T)</span>, where <i>T</i> represents the gas temperature. The particle–wall collision frequency exhibited higher values and less random dispersion around the fitted function compared to the particle–particle collision frequency. A significant deviation from the fitted function <span>(1/sqrt T)</span> was observed at low particle densities. These findings validate the key predictions of kinetic theory and provide deeper insights into the molecular collision dynamics relevant to gaseous and plasma systems, particularly in scenarios involving temperature-dependent interactions.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2201 - 2206"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769678","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 of CdO nanoparticles using facile solid-state reaction and systematic study on their physical properties 易固相反应合成纳米CdO及其物理性质的系统研究
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-31 DOI: 10.1007/s11696-025-03904-0
Arcot Jaswanth, Shaik Kaleemulla
{"title":"Synthesis of CdO nanoparticles using facile solid-state reaction and systematic study on their physical properties","authors":"Arcot Jaswanth,&nbsp;Shaik Kaleemulla","doi":"10.1007/s11696-025-03904-0","DOIUrl":"10.1007/s11696-025-03904-0","url":null,"abstract":"<div><p>Indium doped cadmium oxide nanoparticles Cd<sub>1-x</sub>In<sub>x</sub>O at x = 0, 0.03, 0.05 and 0.07 were prepared using facile solid-state reaction and studied the role of indium (In) on physical properties of the Cd<sub>1-x</sub>In<sub>x</sub>O nanoparticles. The synthesized nanoparticles were subjected to different characterization techniques such as XRD, FESEM, EDAX, FT-IR, UV–Vis-NIR, Raman, PL, and I–V characteristics. The XRD results confirmed that the Cd<sub>1-x</sub>In<sub>x</sub>O nanoparticles were in cubic bixbyite structure with crystallite size in the range of 28 nm to 38 nm. Using the optical absorbance and reflectance spectra, the optical band gap of the Cd<sub>1-x</sub>In<sub>x</sub>O nanoparticles was calculated, and it decreased from 1.81 to 1.76 eV with an increase in indium concentration. Clear peaks at 480 cm<sup>−1</sup> confirmed the metal–oxygen (Cd–O) bonding. The strong Raman modes are observed at 249.94 cm<sup>−1</sup>, 261.92 cm<sup>−1</sup>, 260.81 cm<sup>−1</sup>, 260.53 cm<sup>−1</sup> in Raman spectra. The nanoparticle size was further confirmed by FE-SEM micrographs and histogram plots. In the PL spectra, emission peaks were observed at 423 nm, 485 nm, 532 nm, and 606 nm. The electrical properties were studied using two probe methods and the electrical resistance decreased with an increase in indium concentration.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2053 - 2063"},"PeriodicalIF":2.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769757","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
Interface engineering of highly sensitive and humidity independent PPy/SnO2 nanocomposites for room temperature ammonia gas detection 室温氨气检测用高灵敏度、不依赖湿度的PPy/SnO2纳米复合材料界面工程
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-31 DOI: 10.1007/s11696-025-03906-y
A. J. Heiner, S. Imran Hussain
{"title":"Interface engineering of highly sensitive and humidity independent PPy/SnO2 nanocomposites for room temperature ammonia gas detection","authors":"A. J. Heiner,&nbsp;S. Imran Hussain","doi":"10.1007/s11696-025-03906-y","DOIUrl":"10.1007/s11696-025-03906-y","url":null,"abstract":"<div><p>Tin oxide (SnO<sub>2</sub>) nanoparticles have been synthesized by Sol–Gel method. Polypyrrole (PPy)–tin oxide (SnO<sub>2</sub>) hybrid nanocomposite has synthesized by chemical polymerization of PPy in the presence of SnO<sub>2</sub> nanoparticles. The band gap energy of the hybrid nanocomposite is calculated as 3.39 eV using UV–VIS absorption spectroscopy. The synthesized SnO<sub>2</sub> nanoparticle is tetragonal rutile structure which has been confirmed using X-ray diffraction spectroscopy. Scanning electron microscope is involved in the morphological analysis of the hybrid nanocomposite. Sensing electrodes are fabricated by spin coating of the sensing material on printed circuit board. The electrodes have been investigated for their sensing behaviour towards oxygen (O<sub>2</sub>), hydrogen (H<sub>2</sub>), ammonia (NH<sub>3</sub>), carbon dioxide (CO<sub>2</sub>) and liquid petroleum gas at room temperature. The fabricated electrode is selectively sensitive to 1 ppm of NH<sub>3</sub> with improved sensitivity (55%), response time (20 s) and recovery time (8 s). The electrode shows stable sensitivity towards NH<sub>3</sub> at different ranges of relative humidity (% RH) (30%, 50% and 80%). The electrode maintains 85.33% stability for the period of 50 days.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2079 - 2089"},"PeriodicalIF":2.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769758","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
Investigating the physicochemical and optical properties of PANI and PANI-ZnO thin films for an efficient ammonia sensor at ambient conditions 研究了环境条件下用于高效氨传感器的聚苯胺和聚苯胺氧化锌薄膜的物理化学和光学性质
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-30 DOI: 10.1007/s11696-025-03911-1
Shilpa P. Dhanve, Yashavant P. Gutte, Chandrakant T. Birajdar
{"title":"Investigating the physicochemical and optical properties of PANI and PANI-ZnO thin films for an efficient ammonia sensor at ambient conditions","authors":"Shilpa P. Dhanve,&nbsp;Yashavant P. Gutte,&nbsp;Chandrakant T. Birajdar","doi":"10.1007/s11696-025-03911-1","DOIUrl":"10.1007/s11696-025-03911-1","url":null,"abstract":"<div><p>Polyaniline (PANI) and polyaniline-zinc oxide (PANI-ZnO) nanocomposite thin films have been developed to detect NH<sub>3</sub> gas. The physicochemical and optoelectronic properties of developed thin films were explored using X-ray diffraction (XRD), field effect scanning electron microscope (FESEM), ultraviolet-visible spectroscope (UV–Vis.) and Fourier transform infrared spectroscope characterization techniques. Structural and morphological properties were studied via XRD and FESEM characterization, respectively. The developed thin films exhibited an excellent response towards the target NH<sub>3</sub> gas with outstanding sensitivity, selectivity, linearity, and stability which were studied using the chemiresistive modality at room temperature. Compared to PANI thin film, PANI-ZnO thin films exhibit a 9-fold increment in sensing response with an R<sup>2</sup> value of 0.997. PANI film achieved a response time of ~70 s and a recovery time of ~100 s for 10 ppm NH<sub>3</sub> gas. PANI-ZnO thin films exhibit a response time of ~45 s and a recovery time of ~70 s for the same concentration. All developed films respond to a 5-ppm concentration of NH<sub>3</sub> considered a lower detection limit. The PANI-ZnO thin films show higher stability than PANI films measured in 45 days. Thus, the developed sensors confirmed their potential for the detection of NH<sub>3</sub> gas.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2121 - 2130"},"PeriodicalIF":2.2,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769701","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
Electropolymerization of p-anisidine: influence of pH on electrosynthesis 对茴香胺电聚合:pH对电合成的影响
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-30 DOI: 10.1007/s11696-025-03908-w
Ana Consuelo Felipe, Luiza Aguiar do Nascimento, Thaís Machado Lima, Priscila Izabela Soares, Ângelo Rafael Machado, Diego Leoni Franco, Lucas Franco Ferreira, Ana Graci Brito-Madurro, João Marcos Madurro
{"title":"Electropolymerization of p-anisidine: influence of pH on electrosynthesis","authors":"Ana Consuelo Felipe,&nbsp;Luiza Aguiar do Nascimento,&nbsp;Thaís Machado Lima,&nbsp;Priscila Izabela Soares,&nbsp;Ângelo Rafael Machado,&nbsp;Diego Leoni Franco,&nbsp;Lucas Franco Ferreira,&nbsp;Ana Graci Brito-Madurro,&nbsp;João Marcos Madurro","doi":"10.1007/s11696-025-03908-w","DOIUrl":"10.1007/s11696-025-03908-w","url":null,"abstract":"<div><p>The electropolymerization of <i>p</i>-anisidine on graphite electrodes (GE) was investigated in acidic and basic media using cyclic voltammetry (CV), electrochemical quartz crystal microbalance (EQCM), electrochemical impedance spectroscopy (EIS), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), and scanning electron microscopy (SEM). The results showed significant differences in the polymer formation between the two media. In acidic media, a more electroactive but less stable material is deposited on the electrode surface, whereas the polymer formed in basic media exhibits high resistivity. The CV of the ferricyanide solutions highlighted these differences compared to the unmodified electrode, with an increased current for the acidic polymer and an almost non-existent redox response for the basic polymer. The EIS data corroborated the voltammetry results, revealing significant differences between the resistance values of the two polymers. The charge-transfer resistance increased with increasing pH, indicating slow electron-transfer kinetics. The SEM images show important differences between the graphite electrode and modified electrodes, suggesting the formation of distinct polymer films. ATR-FTIR spectra indicated polymer formation involving nitrogen atoms, with the methoxy group remaining unchanged. Based on electrochemical and spectroscopic evidence, a polymerization mechanism was proposed, involving the formation of tertiary amines in the polymer backbone. The irregular structure of the polymer formed in basic media can explain its resistive behavior. These findings contribute to the understanding <i>of p</i>-anisidine electropolymerization and development of polymer-modified electrodes for potential biosensor applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2091 - 2104"},"PeriodicalIF":2.2,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769753","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
Impact of pH, base selection, and metal–ligand molar ratio on room-temperature synthesis of Ni and Mg MOFs via direct mixing: challenges and prospects pH、碱基选择和金属配体摩尔比对室温直接混合制备Ni和Mg mof的影响:挑战与展望
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-30 DOI: 10.1007/s11696-025-03905-z
Oswaldo Díaz Garza, Boris I. Kharisov, Eduardo M. Sánchez Cervantes, Edith Luévano Hipólito, Oxana V. Kharissova, Cesar M. Oliva González
{"title":"Impact of pH, base selection, and metal–ligand molar ratio on room-temperature synthesis of Ni and Mg MOFs via direct mixing: challenges and prospects","authors":"Oswaldo Díaz Garza,&nbsp;Boris I. Kharisov,&nbsp;Eduardo M. Sánchez Cervantes,&nbsp;Edith Luévano Hipólito,&nbsp;Oxana V. Kharissova,&nbsp;Cesar M. Oliva González","doi":"10.1007/s11696-025-03905-z","DOIUrl":"10.1007/s11696-025-03905-z","url":null,"abstract":"<div><p>Commonly used methods for MOF synthesis, such as solvothermal, mechanochemical, and electrochemical syntheses each, have their own disadvantages, such as long reaction times and the need for specialized equipment. The direct mixing method is a simple, fast, and cheap alternative that allows for MOF production at room temperature in times as short as 15 min. The room-temperature synthesis via a direct mixing method of Ni and Mg MOFs based on trimesic acid (BTC) and terephthalic acid (BDC) was studied by evaluating the effect on the product of the synthesis parameters: pH, base, stirring time, and metal–ligand molar ratio. It was found that the base used to adjust the pH was a critical factor to ensure the formation and purity of each MOF, where Na<sup>+</sup> from NaOH could alter the crystal structure of Mg MOFs by incorporating into it due to its size similarity with Mg<sup>2+</sup>, while the ability of K<sup>+</sup> from KOH to enter the crystal structure was much lesser due to its larger size and allowed for the proper development of the Mg MOFs crystal structure Similarly, a higher molar ratio of the ligand to the metal resulted in the incorporation of the base’s metal into the MOF as an impurity due to an excess of ligand without enough metal to coordinate with. Pure Ni-BTC and Ni-BDC MOFs could be obtained in ~ 15 min, while the Mg-BTC MOF always contained the base-forming metal as an impurity. All the products had irregular morphologies which resulted in lower surface areas and pore volumes when compared to MOFs obtained by other methods. The improvement of these properties is crucial to make the direct mixing method a viable alternative as higher surface areas and pore volumes are beneficial for many of the applications of MOFs, and it was identified that the choice of metal salt precursor plays an important role over these properties. As such, experimentation with different precursors is an important avenue of future research for the improvement of this method.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2065 - 2077"},"PeriodicalIF":2.2,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769752","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
NH2-MIL-53(Fe)-based fluorescent sensor for detection of tetracycline in food matrices 基于 NH2-MIL-53(Fe)的荧光传感器用于检测食品基质中的四环素
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-29 DOI: 10.1007/s11696-025-03896-x
Bandana Thakur, Harpreet Singh, Priyanka Thawany, Vivek Pachauri, Akash Deep, Madhu Khatri, Neha Bhardwaj
{"title":"NH2-MIL-53(Fe)-based fluorescent sensor for detection of tetracycline in food matrices","authors":"Bandana Thakur,&nbsp;Harpreet Singh,&nbsp;Priyanka Thawany,&nbsp;Vivek Pachauri,&nbsp;Akash Deep,&nbsp;Madhu Khatri,&nbsp;Neha Bhardwaj","doi":"10.1007/s11696-025-03896-x","DOIUrl":"10.1007/s11696-025-03896-x","url":null,"abstract":"<div><p>Metal–organic frameworks (MOFs) have emerged as advanced crystalline materials with a periodic network structure made up of metal ions and organic ligands. The tailorable structure, pore size, surface area, and fluorescence of MOFs have led to their applications in diverse fields such as catalysis, sensing, gas storage, and photovoltaic. In the present study, a water-stable and dispersible iron-based MOF, i.e., NH<sub>2</sub>-MIL-53(Fe), was hydrothermally synthesized, and demonstrated for the fluorescent detection of tetracycline (TC) antibiotic. The fluorescence of as-prepared NH<sub>2</sub>-MIL-53(Fe) was quenched in the presence of TC due to the bonding between OH (of TC) and –NH<sub>2</sub> (of NH<sub>2</sub>-MIL-53(Fe). This effective fluorescence quenching of NH<sub>2</sub>-MIL-53(Fe) in the presence of TC can be attributed to a combination of the inner filter effect (IFE) and photo-induced electron transfer (PET) process from the ligand of NH<sub>2</sub>-MIL-53(Fe) to TC, as described by theoretical and experimental studies. Under the optimum conditions, the ratio of fluorescence intensity and TC concentration showed a good linear range (0.05–1 µM) with a detection limit of 53 nM. Furthermore, the sensing probe was also used to detect TC in the spiked milk and juice samples with good recoveries, i.e., 91.3–98.5% and 95.7–104%, respectively. These results demonstrated the potential of NH<sub>2</sub>-MIL-53(Fe) nanosensor to detect TC in real food samples.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1891 - 1902"},"PeriodicalIF":2.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11696-025-03896-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation on medium-temperature carbon dioxide capture performance over zeolite supported CaO adsorbents: synthesis and performance evaluation 沸石支撑氧化钙吸附剂的中温二氧化碳捕集性能研究:合成与性能评估
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-29 DOI: 10.1007/s11696-025-03899-8
Xing Gang Zhang, Archina Buthiyappan, Abdul Aziz Abdul Raman, Hendrik Simon Cornelis Metselaar, Jegalakshimi Jewaratnam, Yee Seng Tan
{"title":"Investigation on medium-temperature carbon dioxide capture performance over zeolite supported CaO adsorbents: synthesis and performance evaluation","authors":"Xing Gang Zhang,&nbsp;Archina Buthiyappan,&nbsp;Abdul Aziz Abdul Raman,&nbsp;Hendrik Simon Cornelis Metselaar,&nbsp;Jegalakshimi Jewaratnam,&nbsp;Yee Seng Tan","doi":"10.1007/s11696-025-03899-8","DOIUrl":"10.1007/s11696-025-03899-8","url":null,"abstract":"<div><p>This study aimed to develop various CaO/zeolite adsorbents tailored for mid-temperature CO₂ adsorption. It investigated the CO₂ uptake efficiency of these adsorbents during carbonation–decarbonation cycles, highlighting the effect of CaO loading on the adsorption efficiency of adsorbents produced by different synthesis methods. CO₂ temperature-programmed desorption (CO₂-TPD) confirmed the CO₂ uptake capacity of CaO/USY at medium temperatures (300 °C). Among the CaO/zeolite adsorbents synthesized, the 10% CaO/USY exhibited the highest adsorption capacity at 300 °C, with a CO₂ uptake of 34.94 mmol·kg⁻<sup>1</sup> during the first cycle. The adsorbent also maintained its CO₂ capacity at 21 mmol·kg⁻<sup>1</sup> over the next nine cycles. Physicochemical analysis revealed that the porous volume of the 10% CaO/USY adsorbent was 0.28 cm<sup>3</sup>·g⁻<sup>1</sup>, and its substantial surface area was 506.20 m<sup>2</sup>·g⁻<sup>1</sup>, as determined through N₂ adsorption measurements. Characterization using FTIR and FESEM confirmed the successful loading and uniform dispersion of CaO on USY, respectively. X-ray diffraction (XRD) analysis revealed that 10% CaO/USY exhibited a smaller CaO crystallite size (29 nm) compared to bulk CaO (65 nm) and 15% CaO/USY (32 nm). Additionally, XRD identified the presence of calcium silicate salts (CaSiO₃ and Ca₂SiO₄) and calcium aluminate salts (Ca₁₂Al₁₄O₃₃), which reduce the CO₂ capture capacity but enhance cyclic stability. This finding suggests a potential approach to enhancing the effectiveness of adsorbents by optimizing the conversion of CaO into these salts. The results provide valuable insights for advancing and scaling up CaO/zeolite adsorbents for CO₂ capture.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1927 - 1943"},"PeriodicalIF":2.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667874","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 on the effect of Ce on the performance of Mg–Ni hydrogen storage alloy coatings and the mechanism of deposition process 研究了Ce对Mg-Ni贮氢合金镀层性能的影响及其沉积机理
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-29 DOI: 10.1007/s11696-025-03912-0
Hongxuan Xing, Zhen Li, Jidong Li,  LiangTian, Enrui Feng
{"title":"Study on the effect of Ce on the performance of Mg–Ni hydrogen storage alloy coatings and the mechanism of deposition process","authors":"Hongxuan Xing,&nbsp;Zhen Li,&nbsp;Jidong Li,&nbsp; LiangTian,&nbsp;Enrui Feng","doi":"10.1007/s11696-025-03912-0","DOIUrl":"10.1007/s11696-025-03912-0","url":null,"abstract":"<div><p>Mg–Ni alloys have high hydrogen storage capacity, easy activation, high discharge capacity but poor corrosion resistance. In order to further improve the hydrogen storage performance and corrosion resistance of Mg–Ni alloys, Ce metal was introduced into Mg–Ni alloys by electrodeposition. The hydrogen storage performance, corrosion resistance and electrochemical behavior of Mg–Ni–Ce hydrogen storage alloy coatings were investigated by electrochemical method. The first charging capacity of the Mg–Ni–Ce hydrogen storage alloy coatings is 797 mA h g<sup>−1</sup>, and the first discharging capacity is 716.5 mA h g<sup>−1</sup>. Compared with Mg–Ni alloy coatings, the addition of Ce element is beneficial to the positive shift of the corrosion voltage of the alloy and the improvement of corrosion resistance. Through cyclic voltammetry testing, the results show that the reduction mechanism of Ce<sup>3+</sup> on the copper electrode is Ce<sup>3+</sup> + 3e<sup>−</sup> → Ce, and the reduction process is irreversible and controlled by diffusion, with a diffusion coefficient of 7.310 × 10<sup>−11</sup> cm<sup>2</sup> s<sup>−1</sup>.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2131 - 2141"},"PeriodicalIF":2.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769699","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
Efficient dehydrogenation of dodecanol to dodecanal in a continuous fixed bed reactor over supported Cu catalyst 负载铜催化剂上连续固定床反应器中十二醇高效脱氢制十二醛
IF 2.2 4区 化学
Chemical Papers Pub Date : 2025-01-28 DOI: 10.1007/s11696-025-03903-1
Shanshan Cao, Zhong Wu, Weiyou Zhou, Zhonghua Sun, Junfeng Qian, Mingyang He, Qun Chen
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