Advanced Materials Letters最新文献

{"title":"Materials Advances to Achieve One World Climate","authors":"Ashutosh Tiwari","doi":"10.5185/amlett.2022.041704","DOIUrl":"https://doi.org/10.5185/amlett.2022.041704","url":null,"abstract":"Climate change has made the human ecosystem uncertain. The eco-adaptation is contributing significantly to a progressive shift in the entire geographical region until and unless it reaches an equilibrium stage. It is critical to support innovative, cleaner public transportation and decarbonization in the carbon industries to create a sustainable world. Global organizations are developing strategies and agendas to contribute to the Sustainable Development Goals in various ways [1]. The economic growth and well-being of the people require an understanding of the one world-one climate concept, and this in turn necessitates basic information for climate rejuvenation strategies in contemporary society. Urban ecosystems can be managed through the provision of a wide range of social, ecological, and technological services that all contribute to better environmental conditions, including cleaner air and water, control of flooding, better mental health, and more vibrant social and cultural life [2]. The shift in the environment and the degradation are a primary source of concern, and immediate treatment through the development of new materials is helpful to achieve climate neutrality by the year 2050 [3]. The production, size, and landscape of the advanced materials market were the primary factors that went into determining the key drivers for the future [4]. The global materials market is expected to increase by many folds soon, according to market trends for types including new buildings, electronics, and energy materials as well as high-end applications in medical devices, automotive, aerospace, electrical and electronics, power, and others [4]. Information in a database that can be understood by the top 100 researchers in materials, a field in which a global selection of research and development is reflected [5]. The transformations for improved characteristics are taking place in the materials industries because of recent innovations. These innovations are driving results for sustainability, light-weighting, 3D printing, and surface engineering as a result of the development of intelligent materials, nano-formulations, and advanced composites [7]. The conceptual motive of a perspective that is climate neutral should push toward \"One World, One Climate\" (also known as \"One World, One Ecosystem\") by fostering eco-friendly working communities that have access to pollution-free environments (Fig. 1). The only way to modify the environmentally friendly policies is to do so in a manner that is coordinated on the regional and national levels. If the world were to adopt the concept of climate neutrality with human beneficial assessment, it might provide a once-in-a-generation opportunity to expand and colonize new areas with a greater sense of assurance.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90482806","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}

{"title":"Synthesis and Mechanical Evaluation of Geopolymeric Mortars Reinforced with Alpaca Wool Fibers","authors":"Daily Gallegos, Denis Mayta, G. Rodrı́guez, Fredy Huaman, Fernando Cuzziramos","doi":"10.5185/amlett.2022.041705","DOIUrl":"https://doi.org/10.5185/amlett.2022.041705","url":null,"abstract":"Geopolymeric mortars were manufactured by mixing mining tailings with textile waste from the alpaca wool industry, in order to study their mechanical strength by performing compression tests and analyzing their microstructure by optical microscopy, in which inversely proportional values of density and porosity, and maximum resistance values from 32 to 9 MPa for samples with 0 and 8 Vol.% of added fibers, respectively.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84296781","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}

{"title":"CO2 Permeation through Nanoporous graphene: a theoretical study","authors":"Z. Fthenakis, Antonios Fountoulakis, I. Petsalakis, N. Lathiotakis","doi":"10.5185/amlett.2022.031700","DOIUrl":"https://doi.org/10.5185/amlett.2022.031700","url":null,"abstract":"One of the most promising fields for application of Nanoporous graphene is that of membranes for gas separation [1-10]. For instance, Wu et. al., [7] reported that the fluorine-modified porous graphene membrane can be used for the separation of CO2 from N2 molecules, since CO2 moves easier through such a membrane, contrary to N2. Sun et. al., [8] identified a nanopore graphene membrane that is permeable to H2 and He, significantly permeable to N2 and impermeable to CH4. They also showed that pore functionalization may significantly affect the molecular permeation [8]. Similar results have been found by Jiang et. al., [9], who reported high selectivity for the separation between H2 and CH4 for graphene membranes with nitrogen functionalized pores. The effect of nitrogen functionalization was also reported by Wei et. al., [10] and Zhu et. al., [11], who showed that porous graphene membranes with pyridinic pores are very efficient in separating He and H2 over Ne, Ar, N2, CO and CH4. In the present work, we investigate theoretically the permeation of CO2 through pyridinic pores in graphene, as part of a systematic study of gas permeation through graphene membranes. Our study focuses on seven membrane systems which are shown schematically in Fig. 1. Apart from pristine graphene (Fig. 1(a)), these membranes, are constructed by removing some neighbouring carbon atoms of the graphene layer, while the pore boundary atoms are replaced by nitrogen (pyridinic pores). Using the method described below, we try to reach the transition state for the minimum energy path that transfers the CO2 molecule from the one side of the membrane to the other through the pore and estimate the energy barrier which corresponds to that transition state. Using the energy barriers, we then estimate the CO2 permeabilities of the membranes utilizing the kinetic theory of gasses.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86875274","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}

{"title":"Experimental Analysis of Composite Beams","authors":"D. Dubecký, V. Kvočák, M. Weissová","doi":"10.5185/amlett.2022.031698","DOIUrl":"https://doi.org/10.5185/amlett.2022.031698","url":null,"abstract":"conflicts to declare.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78116965","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}

{"title":"Effect of closely spaced knots on the failure mechanism of timber beams","authors":"Khaled A. Saad, A. Lengyel","doi":"10.5185/amlett.2022.031702","DOIUrl":"https://doi.org/10.5185/amlett.2022.031702","url":null,"abstract":"linear This research presents a parametric three-dimensional finite element study on the effects of closely spaced knots and related fibre deviations on the flexural failure mechanism of wood beams. The model considers the effects of the position of the knots along the beam's longitudinal and vertical axis. The numerical models were validated by bending tests performed on six timber beams. The actual three-dimensional geometry of knots and related fibre deviations were determined accurately based on an algorithm proposed previously by the authors. The elastic-plastic constitutive law of Nordic Spruce wood was considered based on the Hill anisotropic model. The failures were numerically predicted with the help of the Tsai-Wu failure criterion. The validated numerical models can also be used based on visual inspections. The user needs only to define the position and size of the knots and the space between them. Moreover, the model allows defining different fibre patterns in the knot vicinity. The model considers a fixed knot located in the tension zone at the mid-span of the beam and a moving knot adjusted at horizontal and vertical centre-to-centre distances d and v from the fixed one. Results revealed that regardless of the distance d (where v = 0), the failure will initiate at the same load levels for both knots. However, moving the adjacent knot diagonally ( v not equal to 0) causes shear failure between the knots. The part of the clear wood between the knots is ineffective if the knots' centre-to-centre distance is less than three times the knot diameter.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86455798","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}

{"title":"Preparation, Characterization and Photocatalytic Activity studies of Ag+, Cu2+ and Sn2+-doped Li2GeTeO6 under Visible Light Irradiation","authors":"Vithal Muga, Vaishnavi Kammara, Venkataswamy Perala, Manasa Sunku, Ramaswamy Kadari, Hima Bindu Gaddameedi, Sudhakar Reddy Chandiri","doi":"10.5185/amlett.2022.031703","DOIUrl":"https://doi.org/10.5185/amlett.2022.031703","url":null,"abstract":"Doping of cations into wide bandgap semiconductors is an effective method of increasing photocatalytic activity. This work aims to find out how dopant ions like Ag + , Cu 2+ and Sn 2+ affect the structural, optical and photocatalytic properties of Li 2 GeTeO 6 . The parent Li 2 GeTeO 6 (LGTO) was synthesized by conventional solid-state method, whereas the Ag + , Cu 2+ and Sn 2+ doped Li 2 GeTeO 6 were prepared by a simplistic ion-exchange method. Techniques such as XRD, FT-IR, SEM-EDS, N 2 adsorption-desorption analysis, UV-Vis DRS, XPS, and PL were employed to examine the physico-chemical properties of the as-prepared materials and their photocatalytic activities on the degradation of methyl violet (MV) under visible light irradiation. The acquired photocatalytic activity results revealed that all doped samples displayed enhanced photocatalytic performance compared with parent LGTO. The Ag-LGTO had the best photocatalytic activity for MV degradation, with 68.6% degradation efficiency in 180 min of irradiation. Scavenging experiments were carried out to determine the role of various active species generated on the surface of Ag-LGTO during the photocatalytic degradation of MV. The reusability and stability of Ag-LGTO up to five cycles against MV degradation were also investigated. A photocatalytic mechanism for MV degradation over the Ag-LGTO sample was also proposed based on the findings described above. showed the higher photocatalytic activity towards the MV degradation owing to the higher surface area, enhanced visible light absorption and reduced recombination rate of photogenerated electron-hole pairs compared to other catalysts.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82483715","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}

{"title":"The resistance to UV radiation for GFRP pultruded bridge panels","authors":"B. Stankiewicz","doi":"10.5185/amlett.2022.031699","DOIUrl":"https://doi.org/10.5185/amlett.2022.031699","url":null,"abstract":"the combined action of temperature, humidity and on polymers and composites. The that after the polymer stiffer in an irreversible way. simulated harsh with in water solutions, such as alkali, acid, or salt investigate long-term","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90929856","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}

{"title":"Synthesis and thermomechanical behavior of SiC/Si compounds derived from wood waste","authors":"M. Benavides, Denis Mayta, Fernando Cuzziramos, Gerhard Rodriguez, Fredy Huaman-Mamani","doi":"10.5185/amlett.2022.031701","DOIUrl":"https://doi.org/10.5185/amlett.2022.031701","url":null,"abstract":"to advance in the knowledge of the volumetric relationship in the mechanical response of SiC/Si compounds at variable temperatures.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87924678","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}

{"title":"Climate Diplomacy to Attain Global Eco-Neutrality","authors":"Ashutosh Tiwari","doi":"10.5185/amlett.2022.031697","DOIUrl":"https://doi.org/10.5185/amlett.2022.031697","url":null,"abstract":"United Nations’ Sustainable Development Goals (SDGs) and European Green Deal (EGD) are focused to achieve the climate goals with a committed timeline [1-3]. The Paris Agreement builds a bond between today's guidelines and climate neutrality for setting long-term goals to lead all nations towards mitigating greenhouse gases and global warmth [2]. In Fig. 1, the summary of the European Green Deal can be outlined, which mainly focused on the Europe’s economy transition via mobilising research and innovation to a sustainable future.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73278108","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}

{"title":"Hydrogen Leading the Green Energy Future","authors":"Ashutosh Tiwari","doi":"10.5185/amlett.2022.021690","DOIUrl":"https://doi.org/10.5185/amlett.2022.021690","url":null,"abstract":"limate change evolving as the major concern erratic weather conditions for example heavy rains drought floods, landslides, soil erosion, tsunami, and extreme cold and warm weather, which severely impact the livelihoods of the mankind. Attaining the substance by reducing carbon pollution and other greenhouse gases is the best way to control climate change [1]. Considering the suitable climate, habitat variation, and their adverse effects such as glaciers, heatwave, sea levels rise, etc., it is important to understand the climate control and framing combat policy as per the requirement of energy. Biofuels reduce greenhouse gases extensively in comparison to fossil fuels for transport [2]. The selection of energy technology is critical to achieve the net-zero emission [3]. Energy crisis is a prominent challenge across the globe. Searching and adopting other technologies and sources for energy exploitation may bring risks and challenges [4,5]. However, energy demands increasing day by day, and the exploitation of natural resources for energy extraction, making the environment worst. The importance of armed violence in nurturing environmental degradation and the ecological imbalance was studied [6]. Now, country-wise policy for renewable, and net-zero power generation is much required in line with sustainability [7]. The most abundant element of the globe is hydrogen, which has a universal presence in water, oil, and natural gases. Hydrogen is now established as a clean and flexible energy carrier [8]. Europe and the other nations are progressively walking toward achieving the net-zero objective with the overview of clean hydrogen energy, which will ensure global sustainability faster [9]. The International Association of Advanced Materials, IAAM also orchestrates its goal with the European Green Deal through policy initiatives [10]. Hydrogen utilization for transport, power, and building sectors will not pollute the air and fulfil the sustainability agenda sooner. World-leading organizations also initiated hydrogen research to solve climate issues [11]. The utilization of biowaste for the generation of net-zero energy and hydrogen as commercially used fuels to create a sustainable energy system is the demand of the hour [12]. Therefore, a well-developed hydrogen production infrastructure is best for energy carriers and storage across the globe. Although, efforts need more efficient technology, innovation, policy, and management for utilization in the energy sector. Further, despite numerous limiting factors research institutions and industrial players have taken the challenge with a politically driven agenda to combat climate neutrality.","PeriodicalId":7281,"journal":{"name":"Advanced Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83582848","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}