Next Materials最新文献

{"title":"Advances of solid polymer electrolytes with high-voltage stability","authors":"Zishao Zhao ,&nbsp;Weizhong Liang ,&nbsp;Shan Su ,&nbsp;Xiangfen Jiang ,&nbsp;Yoshio Bando ,&nbsp;Biao Zhang ,&nbsp;Zengsheng Ma ,&nbsp;Xuebin Wang","doi":"10.1016/j.nxmate.2024.100364","DOIUrl":"10.1016/j.nxmate.2024.100364","url":null,"abstract":"<div><p>The solid polymer electrolyte (SPE) is considered a promising candidate to replace commercial liquid electrolytes for the coming all-solid-state lithium batteries (ASSLBs) due to its excellent safety and mechanical properties. To fully realize the potential of SPEs for energy storage, they should be paired with high-voltage cathodes to achieve higher energy density. However, current challenges remain in matching SPEs with high-voltage cathodes, including cation-catalyzed decomposition of SPEs, electrochemical instability, inadequate mechanical contact, and the inability to suppress phase transitions in cathode materials. This paper summarizes the challenges in the development of SPEs when pairing them with high-voltage cathodes, which limit the electrochemical performance of ASSLBs. The discussed strategies focus on SPE synthesis and modification, structural improvements, and cathode-electrolyte interface (CEI) protection. Additionally, the prospects for the development of high-voltage-tolerant SPEs for ASSLBs are discussed.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100364"},"PeriodicalIF":0.0,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002612/pdfft?md5=1bd940765bdcbd52313467af89b41767&pid=1-s2.0-S2949822824002612-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142096575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A study on PVDF-PEO-Li7La2.5Ce0.5Zr1.625Bi0.3O12 solid electrolyte with high ionic conductivity and its application in solid-state batteries","authors":"Jing Wang ,&nbsp;Xin Li ,&nbsp;Xinlu Wang ,&nbsp;Yang Su ,&nbsp;Guixia Liu ,&nbsp;Wensheng Yu ,&nbsp;Xiangting Dong ,&nbsp;Jinxian Wang","doi":"10.1016/j.nxmate.2024.100360","DOIUrl":"10.1016/j.nxmate.2024.100360","url":null,"abstract":"<div><p>Polymer/ceramic composite solid electrolyte is an effective solution for the development of flexible solid-state lithium metal batteries. In this paper, a solid-state lithium-ion electrolyte composed of ceramic powder Li₇La_2.5Ce_0.5Zr_1.625Bi_0.3O₁₂ (LLCZBO) and lithium salt LiTFSI is added to PVDF-PEO. With the addition of 20 wt% LLCZBO, the electrolyte has a high ionic conductivity of 3.67 × 10⁻⁴ S·cm⁻¹ at room temperature. The lithium symmetric battery can be cycled for a long time at a current density of 0.1 mA·cm⁻². The battery with LiNi_0.6Co_0.2Mn_0.2O₂ (NCM) as the cathode can be cycled at room temperature at 0.1 C and obtain high coulombic efficiency. The excellent cycle performance and rate capability can be attributed to the high ionic conductivity of LLCZBO. These advantages indicate that the composite solid electrolyte (CSE) membranes is expected to be a perfect electrolyte for the next generation of solid-state lithium batteries.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100360"},"PeriodicalIF":0.0,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002570/pdfft?md5=b56719211f9c10771f26f8878fa301cc&pid=1-s2.0-S2949822824002570-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142096550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generation of photosynthetic biomaterials by loading electrospun fibres with the green microalgae, Chlamydomonas reinhardtii","authors":"Leah Williams ,&nbsp;Victoria J.C. Holzer ,&nbsp;Jörg Nickelsen ,&nbsp;Fiona L. Hatton ,&nbsp;Elisa Mele","doi":"10.1016/j.nxmate.2024.100359","DOIUrl":"10.1016/j.nxmate.2024.100359","url":null,"abstract":"<div><p>Hypoxic environments within tissues, characterised by low concentrations of oxygen, are a major limitation in certain biomedical applications such as wound healing and tissue engineering. Electrospun fibrous mats have demonstrated potential for use in these applications as they can absorb fluids and physically protect tissues, can be loaded with active compounds (i.e., antimicrobial or therapeutics) and have been shown to support cell migration, adhesive and proliferation. Here, we report electrospun fibrous mats which have been functionalised to overcome the limitations of hypoxia. Specifically, the successful incorporation of the photosynthetic green microalgae <em>Chlamydomonas reinhardtii</em> into electrospun fibrous mats based on polycaprolactone, polylactic acid, and cellulose acetate is demonstrated for the first time. The exploration of various culture conditions found that maximal <em>C. reinhardtii</em> growth occurred under constant light exposure over 24 h at 26 °C. Once laden with <em>C. reinhardtii</em>, the monitoring of material health found that the biomaterials developed were photosynthetically active over a period of 7 days, and capable of generating high concentrations of oxygen to the local environment. Overall, the findings reported here present <em>C. reinhardtii</em>-laden electrospun mats as strong candidates for oxygen-generating materials for potential use in biomedical applications.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100359"},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002569/pdfft?md5=d373a4c88ddb20e64838f6b0b24e47a8&pid=1-s2.0-S2949822824002569-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142096684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to < ' Green synthesis of copper oxide nanoparticles using Rosmarinus officinalis leaf extract and evaluation of its antimicrobial activity' ><[Next Mater. 7 (2025) 100337]","authors":"Mekides Dinka Moroda ,&nbsp;Leta Deressa Tolesa ,&nbsp;Ardila Hayu Tiwikrama ,&nbsp;Tolesa Fita Chala","doi":"10.1016/j.nxmate.2024.100350","DOIUrl":"10.1016/j.nxmate.2024.100350","url":null,"abstract":"","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100350"},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002478/pdfft?md5=08c09331c982be34fd12c6a526435772&pid=1-s2.0-S2949822824002478-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142096551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Targeted mechanical and energy absorption properties of 3D printed aluminium metamaterials","authors":"Manpreet Singh ,&nbsp;Arun Arjunan ,&nbsp;Ahmad Baroutaji ,&nbsp;Chameekara T. Wanniarachchi ,&nbsp;Ayyappan S. Praveen ,&nbsp;John Robinson ,&nbsp;Aaron Vance ,&nbsp;Martin Appiah ,&nbsp;Abul Arafat","doi":"10.1016/j.nxmate.2024.100356","DOIUrl":"10.1016/j.nxmate.2024.100356","url":null,"abstract":"<div><p>The potential of 3D-printed AlSi10Mg auxetic structures for diverse mechanical and energy-absorbing needs remains untapped. This article reveals a multi-criteria framework for the laser powder bed fused (L-PBF) <span><math><mrow><mo>−</mo><mi>υ</mi></mrow></math></span> architecture considering elastic modulus (E), yield strength (<span><math><msub><mrow><mi>σ</mi></mrow><mrow><mi>y</mi></mrow></msub></math></span>), specific energy absorption (SEA), peak crush force (PCF) and crush force efficiency (CFE). The framework seamlessly combines trial data, multi-criteria decision-making, and performance indicators. Five auxetic structures were 3D-printed, characterised for mechanical and energy absorption traits within a 0.17–0.26 relative density range. The outcomes revealed a range of values for various parameters, including the Poisson’s ratio (−0.03 to −0.22), porosity (80.87–87.60 %), CFE (33–83 %), elastic modulus (100–632 MPa), yield strength (1.8–10 MPa), and SEA (0.5–6.8 kJ/kg). The reliability of these structures was ensured through a meticulous selection process based on an extensive literature review and empirical validation. To address the limitations of theoretical models, our work goes beyond theoretical predictions by experimentally validating these properties and integrating advanced methodologies such as the ‘analytic hierarchy process’ (AHP) and the ‘technique for order of preference by similarity to ideal solution’ <em>(</em>TOPSIS)<em>.</em> This allows us to determine the best-performing auxetic architecture. The decision-making process was informed by five user-defined parameters prioritised in the order of CFE&gt;<span><math><mrow><mo>−</mo><mi>υ</mi></mrow></math></span>&gt; E&gt; <span><math><msub><mrow><mi>σ</mi></mrow><mrow><mi>y</mi></mrow></msub></math></span>&gt; SEA based on their relative closeness identifying AUX5 as the best performing auxetic architecture. This study introduces an innovative method for crafting scenario-based auxetic architectures with varying performance levels based on their relative importance.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100356"},"PeriodicalIF":0.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002533/pdfft?md5=3dcc97fadb7064998d509bba4bf7f3b9&pid=1-s2.0-S2949822824002533-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142089345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-catalysed breakdown of titanate nanotubes by graphitic carbon nitride resulting in enhanced hydrogen production","authors":"Ruochen Liu ,&nbsp;Shiqi Zhao ,&nbsp;Xiaorong Cheng ,&nbsp;Luhua Lu ,&nbsp;Xiyang Liu ,&nbsp;Tianqi Liu ,&nbsp;Bochao Dong ,&nbsp;Graham Dawson","doi":"10.1016/j.nxmate.2024.100358","DOIUrl":"10.1016/j.nxmate.2024.100358","url":null,"abstract":"<div><p>Efficient design of a photocatalyst is an important step in realizing real world applications. In this work, using in-situ catalysis we have prepared and investigated a titanate nanotube (TiNT)/ graphitic carbon nitride nanocomposite, which after optimization shows excellent hydrogen production efficiency of 2.3 mmolg⁻¹h⁻¹, much improved compared to GCN, which achieved a rate of 0.56 mmolg⁻¹h⁻¹. We can conclude that pyrolysis of urea to carbon nitride also self catalyses the breakdown of TiNT into anatase TiO₂ nanoparticles, resulting in a nanocomposite material comprising TiO₂ and heterojunctions with GCN. After heating and modification the TiO₂ shows a conduction band edge with a more negative potential than the H⁺/H₂ potential, which along with the ideal position of the GCN CB edge facilitates hydrogen production under light irradiation. This novel method can be viewed as a general method for improving catalysis synthesis and design, whilst simultaneously reducing the complexity and energy footprint of active catalyst synthesis.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100358"},"PeriodicalIF":0.0,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002557/pdfft?md5=6c01beeec28d49825898ca991b16ee44&pid=1-s2.0-S2949822824002557-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142089344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of anti-vibriocidal, antioxidant properties and cytotoxicity of bio fabricated/green synthesized silver nanoparticles using Euphorbia hitra L. leaf extract","authors":"Abhinash Marukurti ,&nbsp;Alavala Matta Reddy ,&nbsp;Silpa Rani Medapalli ,&nbsp;Phanindra Babu Kasi ,&nbsp;P. Tirupathi Rao ,&nbsp;Rohini Anupoju ,&nbsp;D. Ramachandran ,&nbsp;B. Mallikarjuna ,&nbsp;Kommoju Sarojani ,&nbsp;Pangi Vijaya Nirmala","doi":"10.1016/j.nxmate.2024.100355","DOIUrl":"10.1016/j.nxmate.2024.100355","url":null,"abstract":"<div><p>The increasing focus on combating antimicrobial resistance (AMR) in aquaculture sector is driving innovations and better improvements to save billions of dollars globally. Two gram- negative bacteria which cause vibriosis, <em>Vibrio parahaemolytics</em> and <em>Vibrio harveyi</em>, are now resistant to multiple antibiotics. Green technology has evolved to produce novel antimicrobials with reduced potential for AMR and sustainable synthesis. The present study utilized a one-pot biofabrication method to synthesize silver nanoparticles (AgNPs) using <em>Euphorbia hitra</em> leaf aqueous extract (EHLAE) through a bottom-up approach. The qualitative phytochemical examination of EHLAE confirmed the existence of diverse components including steroids, carbohydrates, alkaloids, flavonoids, tannins, terpenoids, saponins, glycosides, and phenols. These compounds have crucial role as reducing and capping AgNPs. The obtained gAgNPs were subjected to evaluate the physico-chemical properties such as Surface Plasmon Resonance (SPR), functional groups, and crystalline structure, were verified by UV-Vis spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), and X-ray diffraction (XRD). The morphology, elemental composition, and size distribution of the AgNPs synthesized using a green method were confirmed using advanced techniques including Field Emission Scanning Electron Microscope (FESEM) with Energy Dispersive X-ray spectroscopy (EDX), High-Resolution Transmission Electron Microscope (HRTEM), and Dynamic Light Scattering (DLS). The silver nanoparticles (AgNPs) shown potent anti-vibriocidal activity against both <em>Vibrio parahaemolyticus</em> and <em>Vibrio harveyi</em> and the Minimum Inhibitory Concentration (MIC) for both bacteria were consistently 31.25 µg mL⁻¹. The <em>in vitro</em> antioxidant tests showed effective results and the found IC₅₀ values are 306 µg mL⁻¹ for DPPH and 6.46 µg mL⁻¹ for FRAP assays. Furthermore, the assessment of <em>in vitro</em> cytotoxicity on Vero cell lines revealed minimal toxicity, as evidenced by an IC₅₀ value of 191.51 µg mL⁻¹. The results reveals that the green synthesized AgNPs using <em>Euphorbia hitra</em> leaf have the potential to be used as effective alternatives for therapeutic purposes in combating the increasing problem of antimicrobial resistance in the aquaculture industry.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100355"},"PeriodicalIF":0.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002521/pdfft?md5=2bd6c11ead44334c80e30440cdf5b23f&pid=1-s2.0-S2949822824002521-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142077262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical studies on benzonitrile-carbazole-based pure organic molecules with room-temperature phosphorescence","authors":"Wen-Kai Chen ,&nbsp;Jing-Yao Kang ,&nbsp;Yan-Jiang Wang ,&nbsp;Yuan-Jun Gao ,&nbsp;Yanli Zeng","doi":"10.1016/j.nxmate.2024.100351","DOIUrl":"10.1016/j.nxmate.2024.100351","url":null,"abstract":"<div><p>Herein we employ density functional theory (DFT) and linear response time-dependent density functional theory (LR-TDDFT) together with our own n-layered integrated molecular orbital and molecular mechanics (ONIOM)-based quantum mechanical/molecular mechanics (QM/MM) methods to study the room-temperature phosphorescent (RTP) micro-mechanism of several benzonitrile-carbazole (CzBz-X) molecules (i.e. CzBz-H, CzBz-F, CzBz-Cl, CzBz-Br) in liquid and solid state. Based on the calculated the ground- and excited-state geometric and electronic structures, the absorption and emission spectra are simulated and agreed well with previous experimental observation. The intersystem crossing (ISC) rate constants of S₁ -&gt; T₁ obtained by the formula derived from the Fermi golden rule are small in liquid state, while the ISC rate constants are comparable to the relative radiative rate constants of S₁ -&gt;S₀ in solid state. Molecular vibrations are restricted in solid state, which lead to the decrease of reorganization energies and Huang-Rhys factors, and the increase of ISC rate constants. Both the heavy-atom effect and aggregation effect play important roles in improving the RTP performance in CzBz-X compounds. Through quantum chemistry calculations, the present work not only elucidates the RTP mechanism and the significance of heavy-atom and aggregation effects in CzBz-X, but also provides new insights for designing novel RTP materials.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100351"},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982282400248X/pdfft?md5=3f73f6021165ba85020641ae6b57ba77&pid=1-s2.0-S294982282400248X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesized AgNPs embellished on crumpled surface of thiazole modified g-C3N4: A heterocatalyst for the photodegradation of pharmaceutical effluent Itraconazole","authors":"Sushma Devi ,&nbsp;Pooja Dhiman ,&nbsp;Arush Sharma ,&nbsp;Sourav Gautam ,&nbsp;Ajay Kumar","doi":"10.1016/j.nxmate.2024.100348","DOIUrl":"10.1016/j.nxmate.2024.100348","url":null,"abstract":"<div><p>The present work demonstrates the fabrication of thiazole modified g-C₃N₄ (CN) incorporated with Ag NPs (CTA) photo catalyst. A green method was opted to synthesize Ag nps using seed extract of <em>Sinapis alba.</em> Thiazole modified CN was synthesized using in-situ thermal condensation followed by the incorporation of Ag nps through green route. The photo catalyst was characterized by IR, XRD, SEM/EDS, HR-TEM and XPS. The analysis of optical activities shows narrowing of band gap from 2.68 eV (g-C₃N₄) to 1.98 (for CTA) which attributed due to SPR effect of Ag nps. The catalytic potential of synthesized CTA has been tested for degradation of itraconazole (ITC) a pharmaceutical effluent. The degradation results have shown that 92.5 % of ITC degraded in 120 min. with higher rate constant value i.e. 0.0205 min⁻¹. Various parameters such as effect of catalysts dosage, pH has been studied. The maximum ITZ degradation by the CTA photocatalyst was observed at 300 mg/L and pH 6. The major radical species responsible for the degradation have been identified as O₂^●- by radical scavenging experiments.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100348"},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002454/pdfft?md5=9ed1cb259eb1d21a4a410b39ed582e13&pid=1-s2.0-S2949822824002454-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainability-driven application of waste steel and tyre rubber fibres as reinforcement in concrete: An optimization study using response surface methodology","authors":"M.A. Kareem ,&nbsp;E.O. Ajadi ,&nbsp;O.O. Fadipe ,&nbsp;K. Ishola ,&nbsp;O.A. Olawuyi ,&nbsp;S.A. Ayanlere ,&nbsp;O.J. Olatoyan ,&nbsp;J.O. Adeosun ,&nbsp;A.A. Adefajo ,&nbsp;A.T. Oyewo ,&nbsp;S.O.A. Olawale ,&nbsp;W.A. Lamidi","doi":"10.1016/j.nxmate.2024.100345","DOIUrl":"10.1016/j.nxmate.2024.100345","url":null,"abstract":"<div><p>Innovative use of waste materials has proven to be effective for improving concrete’s technical properties while eliminating the threat of environmental pollution. There is paucity of research regarding the combined use of Waste Steel Fibres (WSFs) and Waste Tire Rubber Fibres (WTRFs) in concrete. Thus, this study aimed to investigate the influence of WSFs and WTRFs as reinforcement in concrete and determine their optimal fractions for enhancing the concrete strength properties using Response Surface Methodology (RSM). WSFs of 0.3-1.5% with a 0.6% increment and WTRFs of 0.3-1.5% with a 0.6% increment by concrete volume as reinforcement in concrete with water-to-cement ratio (W/C) of 0.25–0.65 with 0.2 increment were designed using the Box-Behnken Design of RSM. A total of fourteen (14) concrete mixes with a design strength of 25 N/mm² were prepared. The fresh and hardened properties (slump, density, water absorption, 7- and 28-day compressive and split tensile strengths) of concrete were determined using standard procedures. The RSM was used to evaluate the interaction between the concrete variables and identify their optimum combination which gave the peak values of responses. Furthermore, the characteristics and sustainability of the concrete under optimum variables were compared with that of the conventional concrete. The outcomes revealed that the inclusion of WSFs and WTRFs yielded concretes with maximum slump, density, water absorption and 28-day compressive and split tensile strengths of 25 mm, 2633 kg/m³, 5%, 41 N/mm² and 4.54 N/mm², respectively. The optimization technique showed the optimal variables combination which yielded the peak response values of WSFs (1.40%), WTRFs (0.66%) and W/C (0.54). The nominal variance with the absolute percent error of less than (9%) between the actual experimental verified results and predicted results for all the responses validates the predictability of the model. The split tensile strength and compressive strength increased by 28.33% and 48.85%, respectively at the optimum setpoint of variable with respect to the reference concrete. In addition, the WSFs and WTRFs-reinforced concrete exhibited lower embodied CO₂ emission but the embodied energy and cost are slightly higher relative to conventional concrete. Nevertheless, the embodied energy of the concrete was significantly lesser than that of concrete that used individual fibers for reinforcement. Thus, the enhancement of concrete strength properties with the prospect for sustainable fibre-reinforced concrete production through the use of waste steel and tyre rubber fibres is feasible.</p></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100345"},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949822824002429/pdfft?md5=98916c8f4737888dafbb875d16a99bae&pid=1-s2.0-S2949822824002429-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}