Pub Date : 2024-07-25DOI: 10.1557/s43579-024-00611-x
Ana Palacios Saura, Joachim Breternitz, Armin Hoell, Susan Schorr
Hybrid halide perovskites (HHPs) are very promising absorber materials for solar cells due to their high power conversion efficiency and the low-cost solution-based processing methods. We applied small angle X-ray scattering to MAPbI3, FAPbI3 and MAPbBr3 precursor solutions in different solvents (GBL, DMF, and mixtures) to gain a deeper understanding of the building blocks during the early stage of HHP formation. We present a core–shell model where the core is formed by [PbX6] octahedra surrounded by a shell of solvent molecules, which explains the arrangement of the precursors in solution and how the solvent and the halide influence such arrangement.
{"title":"The big bang of halide perovskites: The starting point of crystallization","authors":"Ana Palacios Saura, Joachim Breternitz, Armin Hoell, Susan Schorr","doi":"10.1557/s43579-024-00611-x","DOIUrl":"https://doi.org/10.1557/s43579-024-00611-x","url":null,"abstract":"<p>Hybrid halide perovskites (HHPs) are very promising absorber materials for solar cells due to their high power conversion efficiency and the low-cost solution-based processing methods. We applied small angle X-ray scattering to MAPbI<sub>3</sub>, FAPbI<sub>3</sub> and MAPbBr<sub>3</sub> precursor solutions in different solvents (GBL, DMF, and mixtures) to gain a deeper understanding of the building blocks during the early stage of HHP formation. We present a core–shell model where the core is formed by [PbX<sub>6</sub>] octahedra surrounded by a shell of solvent molecules, which explains the arrangement of the precursors in solution and how the solvent and the halide influence such arrangement.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"14 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-22DOI: 10.1557/s43579-024-00613-9
Urice Tohgha, Kyle Carothers, Douglas M. Krein, Michael C. Brennan, Gelu Costin, Chandra Sekhar Tiwary, Tod A. Grusenmeyer, Michael E. McConney, Peter R. Stevenson
Liquid phase exfoliation of non-van der Waals materials has generated renewed interest in fundamental optical and electronic materials discovery and processing. However, such approaches can limit access to novel two-dimensional materials due to the chemistry of exfoliation and processing conditions employed (e.g., processing temperature, mechanical energy input, volatile organic compounds, and sensitive redox chemistries). Here, we demonstrate the exfoliation of bulk hematite (α-Fe2O3) powder using a mild bath sonication methodology in liquid monomer media to form stable colloidal dispersions with quasi-two-dimensional hematene nanoflakes. These colloidal dispersions were further processed to form hematene poly(methyl methacrylate) matrix composite substrates.
{"title":"Liquid monomer phase exfoliation of non-van der Waals hematite and processing of poly(methyl methacrylate) hematene composite substrates","authors":"Urice Tohgha, Kyle Carothers, Douglas M. Krein, Michael C. Brennan, Gelu Costin, Chandra Sekhar Tiwary, Tod A. Grusenmeyer, Michael E. McConney, Peter R. Stevenson","doi":"10.1557/s43579-024-00613-9","DOIUrl":"https://doi.org/10.1557/s43579-024-00613-9","url":null,"abstract":"<p>Liquid phase exfoliation of non-van der Waals materials has generated renewed interest in fundamental optical and electronic materials discovery and processing. However, such approaches can limit access to novel two-dimensional materials due to the chemistry of exfoliation and processing conditions employed (e.g., processing temperature, mechanical energy input, volatile organic compounds, and sensitive redox chemistries). Here, we demonstrate the exfoliation of bulk hematite (α-Fe<sub>2</sub>O<sub>3</sub>) powder using a mild bath sonication methodology in liquid monomer media to form stable colloidal dispersions with quasi-two-dimensional hematene nanoflakes. These colloidal dispersions were further processed to form hematene poly(methyl methacrylate) matrix composite substrates.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"355 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-22DOI: 10.1557/s43579-024-00615-7
Manuel Antonio Ramos Murillo, José Manuel Domínguez Esquivel, Diego Daniel González Araiza, Francisco Robles-Hernández
{"title":"Advanced catalytic materials: Nano and bulk","authors":"Manuel Antonio Ramos Murillo, José Manuel Domínguez Esquivel, Diego Daniel González Araiza, Francisco Robles-Hernández","doi":"10.1557/s43579-024-00615-7","DOIUrl":"https://doi.org/10.1557/s43579-024-00615-7","url":null,"abstract":"","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"40 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1557/s43579-024-00607-7
Ghada Ali, Sara A. M. El-Sayed, Ola M. El-Borady, Hatem S. A. Elgohary, Maram E. Khallaf, Maged El-Kemary
The present work evaluates chitosan/sodium alginate blended with two nanomaterials of hydroxyapatite (HA) and commercial nanoclay-Cloisite20A for improving bone regeneration. The free nano-HA, nanoclay, and their scaffolds were characterized via TEM, SEM, EDX, FTIR, XRD, and TGA analyses. In vitro bioactivity, degradation, swelling, and cytotoxicity were investigated. For the in vivo studies, two groups of rats were used (n = five) in the study period (37 days). The scaffolds were implanted in the rat’s back. TEM analysis showed the nanorods of HA have a particle length of around 107 nm and a width around 17 nm, which is crystalline in nature, as XRD demonstrated. However, the SEM images showed the formation of honeycomb-like scaffolds. The in vitro bioactivity results through the changes of PBS ions and SEM/EDX analysis after immersion in PBS detected the formation of a calcium phosphate layer which is important for bone regeneration. The cell viability results proved IC50 > 670 µg/mL and IC50: 116 µg/mL for HA and nanoclay, respectively. Furthermore, the histological analysis revealed the highest calcification after 1 month for the nano-HA-containing scaffold supporting them as promising substitute biomaterials for treating bone loss.
{"title":"Nanoclay and nano-hydroxyapatite chitosan-based scaffold for bone regeneration: Morphological, spectral, structural, thermal, in vitro, and in vivo studies","authors":"Ghada Ali, Sara A. M. El-Sayed, Ola M. El-Borady, Hatem S. A. Elgohary, Maram E. Khallaf, Maged El-Kemary","doi":"10.1557/s43579-024-00607-7","DOIUrl":"https://doi.org/10.1557/s43579-024-00607-7","url":null,"abstract":"<p>The present work evaluates chitosan/sodium alginate blended with two nanomaterials of hydroxyapatite (HA) and commercial nanoclay-Cloisite20A for improving bone regeneration. The free nano-HA, nanoclay, and their scaffolds were characterized via TEM, SEM, EDX, FTIR, XRD, and TGA analyses. <i>In vitro</i> bioactivity, degradation, swelling, and cytotoxicity were investigated. For the <i>in vivo</i> studies, two groups of rats were used (<i>n</i> = five) in the study period (37 days). The scaffolds were implanted in the rat’s back. TEM analysis showed the nanorods of HA have a particle length of around 107 nm and a width around 17 nm, which is crystalline in nature, as XRD demonstrated. However, the SEM images showed the formation of honeycomb-like scaffolds. The <i>in vitro</i> bioactivity results through the changes of PBS ions and SEM/EDX analysis after immersion in PBS detected the formation of a calcium phosphate layer which is important for bone regeneration. The cell viability results proved IC50 > 670 µg/mL and IC50: 116 µg/mL for HA and nanoclay, respectively<i>.</i> Furthermore, the histological analysis revealed the highest calcification after 1 month for the nano-HA-containing scaffold supporting them as promising substitute biomaterials for treating bone loss.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"11 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-12DOI: 10.1557/s43579-024-00609-5
Vivek Kakani, Ross Haroldson, Aaron Parra, Erling Beck, Anvar Zakhidov, Xiaoyan Shi
NbTi alloy features a moderate transition temperature and a relatively high upper critical field, but NbTi superconducting wires face inherent challenges in weight-sensitive applications. Here, we present the growth and characterizations of lightweight NbTi nanowires made by co-sputtering Nb and Ti onto poly(vinyl alcohol) as the supporting material and the nanowire template. Scanning electron microscopy and transport studies reveal that the nanowires exhibit similar superconducting properties to the bulk, simultaneously reducing the NbTi nanowire weight. This nanowire design results in a lighter structure that requires fewer materials, offering a promising solution for diverse applications.
Graphical abstract
铌钛合金具有适中的转变温度和相对较高的上临界电场，但铌钛超导线在重量敏感型应用中面临固有的挑战。在此，我们介绍了以聚乙烯醇为支撑材料和纳米线模板，通过共溅射 Nb 和 Ti 制成的轻质 NbTi 纳米线的生长和特性。扫描电子显微镜和传输研究表明，纳米线具有与块体类似的超导特性，同时减轻了铌钛纳米线的重量。这种纳米线设计使结构更轻，所需的材料更少，为各种应用提供了一种前景广阔的解决方案。
{"title":"Growth and characterization of lightweight NbTi superconducting nanowires","authors":"Vivek Kakani, Ross Haroldson, Aaron Parra, Erling Beck, Anvar Zakhidov, Xiaoyan Shi","doi":"10.1557/s43579-024-00609-5","DOIUrl":"https://doi.org/10.1557/s43579-024-00609-5","url":null,"abstract":"<p>NbTi alloy features a moderate transition temperature and a relatively high upper critical field, but NbTi superconducting wires face inherent challenges in weight-sensitive applications. Here, we present the growth and characterizations of lightweight NbTi nanowires made by co-sputtering Nb and Ti onto poly(vinyl alcohol) as the supporting material and the nanowire template. Scanning electron microscopy and transport studies reveal that the nanowires exhibit similar superconducting properties to the bulk, simultaneously reducing the NbTi nanowire weight. This nanowire design results in a lighter structure that requires fewer materials, offering a promising solution for diverse applications.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"55 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-09DOI: 10.1557/s43579-024-00588-7
Lukman Abubakar, Sameer Jain, Ian Ahlen, Arjak Bhattacharjee
Concrete is the second most widely consumed material across the globe after water and it is the most utilized building material. However, microbial contamination and corresponding degradation in concrete structures reduce its life span. This also imposes a financial burden as well as a threat to public health. The major scientific question posed in this research is, “Can we utilize turmeric as an alternate coating to introduce antibacterial properties in concrete structures?”. Our obtained results show that turmeric coating in concrete results in up to ~ 68% antibacterial efficacy against Staphylococcus aureus (S. aureus) without compromising the mechanical properties.
{"title":"Turmeric-coated sustainable concrete with antibacterial properties","authors":"Lukman Abubakar, Sameer Jain, Ian Ahlen, Arjak Bhattacharjee","doi":"10.1557/s43579-024-00588-7","DOIUrl":"https://doi.org/10.1557/s43579-024-00588-7","url":null,"abstract":"<p>Concrete is the second most widely consumed material across the globe after water and it is the most utilized building material. However, microbial contamination and corresponding degradation in concrete structures reduce its life span. This also imposes a financial burden as well as a threat to public health. The major scientific question posed in this research is, “Can we utilize turmeric as an alternate coating to introduce antibacterial properties in concrete structures?”. Our obtained results show that turmeric coating in concrete results in up to ~ 68% antibacterial efficacy against <i>Staphylococcus aureus</i> (<i>S. aureus</i>) without compromising the mechanical properties.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"26 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-09DOI: 10.1557/s43579-024-00606-8
P. Rangel-Rivera, B. Bachiller-Baeza, A. Quiroga-Almaguer, I. Galindo-Esquivel, G. Rangel-Porras
The KSF-clay is a material that presents a high density of acidic active sites, ideal for being a heterogeneous acid catalyst with outstanding activity. For this study, KSF-clay was characterized by X-ray photoelectron spectroscopy and temperature-programmed desorption of ammonia. Additionally, studies of the adsorption of ethanol, propan-2-ol, and acetic acid molecules over KSF-clay surface to establish their thermal stability species were studied by diffuse reflectance infrared Fourier transform spectroscopy. The relationship between the properties of KSF-clay and the adsorption-interaction process with organic molecules is related to its performance as an acid catalyst.
Graphical abstract
KSF 粘土是一种具有高密度酸性活性位点的材料，非常适合用作具有出色活性的异相酸催化剂。本研究通过 X 射线光电子能谱和氨的温度编程解吸对 KSF-粘土进行了表征。此外，还利用漫反射红外傅里叶变换光谱法研究了乙醇、2-丙醇和乙酸分子在 KSF-粘土表面的吸附情况，以确定其热稳定性物种。KSF 粘土的性质与有机分子的吸附-相互作用过程之间的关系与其作为酸催化剂的性能有关。
{"title":"Surface and physicochemical characteristics of KSF-clay in a liquid esterification process: The boundaries between heterogeneous catalyst and precatalysts support","authors":"P. Rangel-Rivera, B. Bachiller-Baeza, A. Quiroga-Almaguer, I. Galindo-Esquivel, G. Rangel-Porras","doi":"10.1557/s43579-024-00606-8","DOIUrl":"https://doi.org/10.1557/s43579-024-00606-8","url":null,"abstract":"<p>The KSF-clay is a material that presents a high density of acidic active sites, ideal for being a heterogeneous acid catalyst with outstanding activity. For this study, KSF-clay was characterized by X-ray photoelectron spectroscopy and temperature-programmed desorption of ammonia. Additionally, studies of the adsorption of ethanol, propan-2-ol, and acetic acid molecules over KSF-clay surface to establish their thermal stability species were studied by diffuse reflectance infrared Fourier transform spectroscopy. The relationship between the properties of KSF-clay and the adsorption-interaction process with organic molecules is related to its performance as an acid catalyst.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"10 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-09DOI: 10.1557/s43579-024-00590-z
A. S. Messecar, S. M. Durbin, R. A. Makin
Several hundred plasma-assisted molecular beam epitaxy synthesis experiments of GaN and ZnO thin film crystals were organized into data sets that correlate the operating parameters selected for growth to two figures of merit: a binary determination of surface morphology, and a continuous Bragg–Williams measure of lattice ordering (S2). Quantum as well as conventional supervised machine learning algorithms were optimized and trained on the data, enabling a comparison of their generalization performance. The models displaying the best generalization performance on each data set were subsequently used to predict each figure of merit across the ZnO and GaN processing spaces.
{"title":"Quantum and classical machine learning investigation of synthesis–structure relationships in epitaxially grown wide band gap semiconductors","authors":"A. S. Messecar, S. M. Durbin, R. A. Makin","doi":"10.1557/s43579-024-00590-z","DOIUrl":"https://doi.org/10.1557/s43579-024-00590-z","url":null,"abstract":"<p>Several hundred plasma-assisted molecular beam epitaxy synthesis experiments of GaN and ZnO thin film crystals were organized into data sets that correlate the operating parameters selected for growth to two figures of merit: a binary determination of surface morphology, and a continuous Bragg–Williams measure of lattice ordering (<i>S</i><sup>2</sup>). Quantum as well as conventional supervised machine learning algorithms were optimized and trained on the data, enabling a comparison of their generalization performance. The models displaying the best generalization performance on each data set were subsequently used to predict each figure of merit across the ZnO and GaN processing spaces.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"9 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-09DOI: 10.1557/s43579-024-00583-y
Ali Matin Nazar, Haifei Zhu, Haibo Xu, Zhiming Zhang, Arash Rayegani, Maria Rashidi
This paper provides a numerical simulation study of Magnetically Circular Layers of Triboelectric Nanogenerators (MCL-TENGs) for energy harvesting and self-powered sensing. The MCL-TENGs generate electrical energy by means of the conversion of mechanical energy into electrical energy through contact electrification and electrostatic induction. This paper concentrates on the numerical modeling of the copper/aluminum MCL-TENG and compares simulation results with experimental findings. The voltage comparison of copper MCL-TENGs (OC) between experimental and numerical simulations at 2000, 2500, and 3000 rpm showed Cu-EXP configuration voltages ranging from 4.1 to 4.4 V and Cu-FEM setup voltages ranging from 4 to 4.4 V. Meanwhile, aluminum MCL-TENGs showed Al-EXP configuration voltages ranging from 4.08 to 4.35 V and Al-FEM setup voltages ranging from 4 to 4.3 V across the third layer. The system can enhance the energy efficiency and sustainability of coastal bridge infrastructure by harvesting surplus energy from mechanical motion and converting it to electricity for self-powered sensing and monitoring systems.
{"title":"Magnetically circular layered triboelectric nanogenerators by advanced self-sensing composites","authors":"Ali Matin Nazar, Haifei Zhu, Haibo Xu, Zhiming Zhang, Arash Rayegani, Maria Rashidi","doi":"10.1557/s43579-024-00583-y","DOIUrl":"https://doi.org/10.1557/s43579-024-00583-y","url":null,"abstract":"<p>This paper provides a numerical simulation study of Magnetically Circular Layers of Triboelectric Nanogenerators (MCL-TENGs) for energy harvesting and self-powered sensing. The MCL-TENGs generate electrical energy by means of the conversion of mechanical energy into electrical energy through contact electrification and electrostatic induction. This paper concentrates on the numerical modeling of the copper/aluminum MCL-TENG and compares simulation results with experimental findings. The voltage comparison of copper MCL-TENGs (OC) between experimental and numerical simulations at 2000, 2500, and 3000 rpm showed Cu-EXP configuration voltages ranging from 4.1 to 4.4 V and Cu-FEM setup voltages ranging from 4 to 4.4 V. Meanwhile, aluminum MCL-TENGs showed Al-EXP configuration voltages ranging from 4.08 to 4.35 V and Al-FEM setup voltages ranging from 4 to 4.3 V across the third layer. The system can enhance the energy efficiency and sustainability of coastal bridge infrastructure by harvesting surplus energy from mechanical motion and converting it to electricity for self-powered sensing and monitoring systems.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"40 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-09DOI: 10.1557/s43579-024-00603-x
M. C. Maciel Arreola, J. A. Medina Cervantes, R. I. Yocupicio Gaxiola, A. Infantes Molina, R. Huirache-Acuña, S. Fuentes Moyado, G. Alonso Núñez
Nickel and cobalt sulfide-based catalysts supported on a silicon-pillared MFI zeolite were synthesized, characterized, and tested in the hydrodesulfurization reaction of dibenzothiophene. The metallic phases were incorporated by following the incipient wetness impregnation process, and different techniques were employed to determine the physicochemical properties of the obtained catalysts, such as X-ray diffraction, N2 adsorption–desorption at – 196 °C, Infrared Spectroscopy and High-Resolution Transmission Electron Microscopy. The catalytic performance in the hydrodesulfurization of dibenzothiophene showed that the NiW catalyst was the most active due to the redispersion of NiS on WS2 to form the active NiWS phase. Instead, the desired CoWS phase did not occur under the presence of cobalt, and therefore, the catalytic performance worsened.
Graphical abstract
在二苯并噻吩的加氢脱硫反应中，合成、表征并测试了硅柱 MFI 沸石上支撑的镍和钴硫化物基催化剂。通过初湿浸渍工艺掺入了金属相，并采用不同的技术测定了所获催化剂的理化性质，如 X 射线衍射、- 196 °C 下的 N2 吸附-解吸、红外光谱和高分辨率透射电子显微镜。二苯并噻吩加氢脱硫的催化性能表明，NiW 催化剂的活性最高，这是因为 NiS 在 WS2 上重新分散形成了活性 NiWS 相。相反，在钴存在的情况下，并没有出现所需的 CoWS 相，因此催化性能恶化。
{"title":"Si-pillared MFI zeolites as promising supports for HDS catalysts","authors":"M. C. Maciel Arreola, J. A. Medina Cervantes, R. I. Yocupicio Gaxiola, A. Infantes Molina, R. Huirache-Acuña, S. Fuentes Moyado, G. Alonso Núñez","doi":"10.1557/s43579-024-00603-x","DOIUrl":"https://doi.org/10.1557/s43579-024-00603-x","url":null,"abstract":"<p>Nickel and cobalt sulfide-based catalysts supported on a silicon-pillared MFI zeolite were synthesized, characterized, and tested in the hydrodesulfurization reaction of dibenzothiophene. The metallic phases were incorporated by following the incipient wetness impregnation process, and different techniques were employed to determine the physicochemical properties of the obtained catalysts, such as X-ray diffraction, N<sub>2</sub> adsorption–desorption at – 196 °C, Infrared Spectroscopy and High-Resolution Transmission Electron Microscopy. The catalytic performance in the hydrodesulfurization of dibenzothiophene showed that the NiW catalyst was the most active due to the redispersion of NiS on WS<sub>2</sub> to form the active NiWS phase. Instead, the desired CoWS phase did not occur under the presence of cobalt, and therefore, the catalytic performance worsened.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"37 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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