Inorganics最新文献_第8页

The Effect of the Linking Unit on the Electronic and Magnetic Interactions in Copper(II) Porphyrin Dimers Linked by Metal Ions 连接单元对金属离子连接的卟啉铜(II)二聚体中电子和磁性相互作用的影响

Inorganics Pub Date : 2024-01-27 DOI: 10.3390/inorganics12020044

Jordan L. Appleton, Nolwenn Le Breton, Sylvie Choua, Romain Ruppert

引用次数: 0

A Core and Valence-Level Spectroscopy Study of the Enhanced Reduction of CeO2 by Iron Substitution—Implications for the Thermal Water-Splitting Reaction 铁置换增强 CeO2 还原性的核级和价级光谱研究--对热分水反应的启示

Inorganics Pub Date : 2024-01-27 DOI: 10.3390/inorganics12020042

H. Idriss

{"title":"A Core and Valence-Level Spectroscopy Study of the Enhanced Reduction of CeO2 by Iron Substitution—Implications for the Thermal Water-Splitting Reaction","authors":"H. Idriss","doi":"10.3390/inorganics12020042","DOIUrl":"https://doi.org/10.3390/inorganics12020042","url":null,"abstract":"The reduction of Ce cations in CeO2 can be enhanced by their partial substitution with Fe cations. The enhanced reduction of Ce cations results in a considerable increase in the reaction rates for the thermal water-splitting reaction when compared to CeO2 alone. This mixed oxide has a smaller crystallite size when compared to CeO2, in addition to a smaller lattice size. In this work, two Fe-substituted Ce oxides are studied (Ce0.95Fe0.05O2-δ and Ce0.75Fe0.25O2-δ; δ < 0.5) by core and valence level spectroscopy in their as-prepared and Ar-ion-sputtered states. Ar ion sputtering substantially increases Ce4f lines at about 1.5 eV below the Fermi level. In addition, it is found that the XPS Ce5p/O2s ratio is sensitive to the degree of reduction, most likely due to a higher charge transfer from the oxygen to Ce ions upon reduction. Quantitatively, it is also found that XPS Ce3d of the fraction of Ce3+ (uo, u′ and vo, v′) formed upon Ar ion sputtering and the ratio of Ce5p/O2s lines are higher for reduced Ce0.95Fe0.05O2-δ than for reduced Ce0.75Fe0.25O2-δ. XPS Fe2p showed, however, no preferential increase for Fe3+ reduction to Fe0 with increasing time for both oxides. Since water splitting was higher on Ce0.95Fe0.05O2-δ when compared to Ce0.75Fe0.25O2-δ, it is inferred that the reaction centers for the thermal water splitting to hydrogen are the reduced Ce cations and not the reduced Fe cations. These reduced Ce cations can be tracked by their XPS Ce5p/O2s ratio in addition to the common XPS Ce3d lines.","PeriodicalId":507601,"journal":{"name":"Inorganics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140492805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Large Area Growth of Silver and Gold Telluride Ultrathin Films via Chemical Vapor Tellurization 通过化学气相碲化大面积生长碲银和碲金超薄薄膜

Inorganics Pub Date : 2024-01-17 DOI: 10.3390/inorganics12010033

Sara Ghomi, A. Lamperti, M. Alia, C. Casari, C. Grazianetti, A. Molle, C. Martella

引用次数: 0

Deciphering Interactions Involved in Immobilized Metal Ion Affinity Chromatography and Surface Plasmon Resonance for Validating the Analogy between Both Technologies 解密固定金属离子亲和层析与表面等离子共振中的相互作用，验证两种技术的相似性

Inorganics Pub Date : 2024-01-16 DOI: 10.3390/inorganics12010031

R. Irankunda, Jairo Andrés Camaño Echavarría, Cédric Paris, K. Selmeczi, Loic Stefan, Sandrine Boschi-Muller, Laurence Muhr, L. Canabady-Rochelle

{"title":"Deciphering Interactions Involved in Immobilized Metal Ion Affinity Chromatography and Surface Plasmon Resonance for Validating the Analogy between Both Technologies","authors":"R. Irankunda, Jairo Andrés Camaño Echavarría, Cédric Paris, K. Selmeczi, Loic Stefan, Sandrine Boschi-Muller, Laurence Muhr, L. Canabady-Rochelle","doi":"10.3390/inorganics12010031","DOIUrl":"https://doi.org/10.3390/inorganics12010031","url":null,"abstract":"Various peptides can be obtained through protein enzymatic hydrolysis. Immobilized metal ion affinity chromatography (IMAC) is one of the methods which can be used to separate metal chelating peptides (MCPs) in a hydrolysate mixture. In this context, this work aims to understand deeply the interactions in IMAC and surface plasmon resonance (SPR) in order to validate experimentally the analogy between both technologies and to be further able to perform IMAC modeling in the next work using peptide sorption isotherm parameters obtained from SPR. Indeed, chromatography modeling can be used to predict separation of MCPs in IMAC and the knowledge of peptide sorption isotherm obtained from SPR is a crucial step. For this purpose, 22 peptides were selected and investigated in IMAC using HisTrap X-Ni2+ and HiFliQ NTA-Ni2+ columns and were also studied in SPR as well. Results showed that peptides with histidine residues had good affinity to Ni2+, while the high positive charge of peptides was responsible of ionic interactions. Further, most of the peptides with good retention time in IMAC showed a good affinity in SPR as well, which validated experimentally the SPR-IMAC analogy.","PeriodicalId":507601,"journal":{"name":"Inorganics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139527950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploration of ZnO-Doped Nitrogen-Carbon Materials Derived from Polyamide-Imide for Propane Dehydrogenation 探索用于丙烷脱氢的聚酰胺-酰亚胺掺杂氧化锌氮碳材料

Inorganics Pub Date : 2024-01-02 DOI: 10.3390/inorganics12010022

Huahua Zhao, Tingyu Ji, Yanping Wu, Huanling Song, Jianfeng Wu, L. Chou

引用次数: 0