Materials Today Sustainability最新文献_第7页

Advancing reinforcement of sustainable gypsum composites: High-performance design by reusing waste materials 推进可持续石膏复合材料的加固：通过废物再利用实现高性能设计

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-30 DOI: 10.1016/j.mtsust.2024.100946

Sameh Balti, Abderrahim Boudenne, Kawthar Yahya, Noureddine Hamdi

{"title":"Advancing reinforcement of sustainable gypsum composites: High-performance design by reusing waste materials","authors":"Sameh Balti, Abderrahim Boudenne, Kawthar Yahya, Noureddine Hamdi","doi":"10.1016/j.mtsust.2024.100946","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100946","url":null,"abstract":"This study tends to optimize and develop an innovative gypsum material by incorporating hybrid waste compounds. Using a Doehlert design, this work explores the effects of introducing paper (X), polystyrene (X), and polyester fibers (X), as well as their interactions, on gypsum's thermophysical and mechanical behavior. Bulk density, thermal conductivity, flexural strength, compressive strength, and the fire resistance test were performed on the developed formulations. Statistical analysis emphasizes the significant influence of all process variables on gypsum properties. Polyester fibers notably enhance flexural strength when combined with the cooperative effect of paper and polystyrene wastes, which strike a balance between physical and mechanical characteristics. The optimum formulation parameters lead to a significant 33% decrease in bulk density, a 43% reduction in thermal conductivity, a notable 42% increase in flexural strength, and a significant reduction in compressive strength of around 50%, but still meet the 2 MPa standard. The new samples show ductile behavior, highlighting gypsum's potential as a load-bearing material with excellent thermal insulation properties and impressive fire resistance. This research significantly improves our understanding of the effectiveness of a gypsum compound incorporating waste in a hybrid manner, bringing this approach into line with sustainable development objectives.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of heat treatment and forming cycle on the precise forming of AZ31 magnesium alloy sheet 热处理和成形周期对 AZ31 镁合金板精确成形的影响

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-30 DOI: 10.1016/j.mtsust.2024.100940

Ziyi Li, Fangkun Ning, Lifeng Ma, Weitao Jia, Qinghao Shi

{"title":"Influence of heat treatment and forming cycle on the precise forming of AZ31 magnesium alloy sheet","authors":"Ziyi Li, Fangkun Ning, Lifeng Ma, Weitao Jia, Qinghao Shi","doi":"10.1016/j.mtsust.2024.100940","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100940","url":null,"abstract":"Precision forming of 3 mm thick rolled AZ31 magnesium alloy sheet at 90° results in severe cracking and a considerable rebound angle. The effects of different sheet heat treatments and changes in the forming cycle on the value of the forming angle were investigated using 90° precision forming tests. The reasons of sheet cracking were examined using tensile tests and numerical simulations. Microscopic analysis and characterization techniques such as metallographic experiments, SEM observations, and EBSD tests are used to clarify the mechanism of improvement and control of the forming angle value. The results indicate that annealing treatment exhibits high sensitivity to controlling sheet cracking, but low sensitivity to controlling rebound. Among them, after heat treatment at 250 °C+1 h, the sheet no longer cracks during forming. In incomplete annealing, the more small grains produced by recrystallization and the greater the number of dimples in the fracture, the closer the forming angle is to 90°. Full annealing can result in a small reduction in the forming angle value compared to incomplete annealing treatments. After extending the forming cycle for 1 h, the increase in the ratio of dual tensile twin boundaries and low angle grain boundaries resulted in a significant decrease in the value of the forming angle and no cracking of the sheet. The increase of recrystallized tissue on the tensile side and the increase of the KAM value led to the decrease of the forming angle value to the minimum value at 300 °C+1 h heat treatment condition.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A feasibility study of oil palm empty fruit bunch pulp as a substitution for radiata pine pulp for autoclave fibre cement composite production 油棕空果束浆替代辐射松浆用于高压釜纤维水泥复合材料生产的可行性研究

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-29 DOI: 10.1016/j.mtsust.2024.100927

K.P. Yam, S.H. Ang, U. Kong, A.A. Azniwati, H.D. Rozman, G.S. Tay

{"title":"A feasibility study of oil palm empty fruit bunch pulp as a substitution for radiata pine pulp for autoclave fibre cement composite production","authors":"K.P. Yam, S.H. Ang, U. Kong, A.A. Azniwati, H.D. Rozman, G.S. Tay","doi":"10.1016/j.mtsust.2024.100927","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100927","url":null,"abstract":"The main objective of this study was to investigate the feasibility of using unbleached pulp from oil palm empty fruit bunches, produced via the Ethanolamine pulping process, to replace Radiata Pine pulp in autoclave fibre cement composite (AFCC) manufacturing. The Ethanolamine pulping process was chosen for its silica retention capability on empty fruit bunch surfaces. The research involves three key phases: an initial characterization of RPP and EFBP properties, including kappa numbers and pulp aspect ratios; subsequent AFCC production with varying RPP content levels (0%–13%) and different cement-to-silica (C/S) ratios (0.2–1.0); and the introduction of EFBP as a partial or complete substitute for RPP at a fixed C/S ratio. Results reveal RPP excels in fibre quality attributes like length, coarseness, fineness, width, and wet/dry zero span, while EFBP offers advantages in fibre count and macro fibrillation index. X-ray diffraction confirms silica presence on EFBP. The highest modulus of rupture (MOR), at 15.5 MPa, is achieved with 9% RPP and a C/S ratio of 1.0. Subsequent analysis, with 1% EFBP interval substitutions to total 13% pulp content, yields the highest MOR values under dry (16.7 MPa) and wet (9.9 MPa) conditions using recipes with 6% RPP and 3% EFBP. XRD confirms the presence of silica on EFBP, forming a crystalline flake layer post-autoclaving. Thus, EFBP proves suitable as a partial AFCC substitute.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141880491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-sensing performance of concrete columns using Multi-layer Graphene filled cement-based sensors with different arrangements 使用不同排列方式的多层石墨烯填充水泥基传感器的混凝土柱自传感性能

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-09 DOI: 10.1016/j.mtsust.2024.100916

Lixin Sun, Tao Wu, Hui Wei, Minglei Wang, Tong Zhang

{"title":"Self-sensing performance of concrete columns using Multi-layer Graphene filled cement-based sensors with different arrangements","authors":"Lixin Sun, Tao Wu, Hui Wei, Minglei Wang, Tong Zhang","doi":"10.1016/j.mtsust.2024.100916","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100916","url":null,"abstract":"The Multi-layer Graphene (MLGs) filled cement-based sensor (GCBS) was developed and applied in the concrete columns. The strain-sensing performance of GCBS was investigated under cyclic and monotonic loading after being embedded in the column. Meanwhile, the influence of embedded location and adjacent sensor distance on the piezoresistive performance of the sensor was discussed. The strain measured by the embedded sensor agreed well with that obtained by LVDTs within the elastic regime. However, the embedded sensor underestimated the concrete strain after stepping into the plastic stage because of the increasing transverse deformation coefficient. Moreover, improper arrangement of the sensor resulted in uneven deformation, generating significant strain differences between the sensor with concrete and increasing prediction deviation. To guarantee the predicting accuracy of the sensor, it is recommended that the embedded position of the sensor from the superficial layer of the column should exceed 25 mm, and the distance between adjacent sensors should not be lower than 107.24 mm.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced dehydroaromatization of methane with methanol on Mo-ZSM-5/ZSM-11 intergrown zeolite materials 在 Mo-ZSM-5/ZSM-11 互生沸石材料上增强甲烷与甲醇的脱氢芳构化作用

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-08 DOI: 10.1016/j.mtsust.2024.100913

Lei Wang, Xinxin Lei, Lulu Xu, Dazhi Zhang, Weiping Zhang

{"title":"Enhanced dehydroaromatization of methane with methanol on Mo-ZSM-5/ZSM-11 intergrown zeolite materials","authors":"Lei Wang, Xinxin Lei, Lulu Xu, Dazhi Zhang, Weiping Zhang","doi":"10.1016/j.mtsust.2024.100913","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100913","url":null,"abstract":"Methane dehydroaromatization (MDA) represents an appealing route for the direct utilization of abundant methane resources. Currently, the major challenge of MDA reaction lies in the rapid catalyst deactivation via coke formation, hindering large-scale industrialization of the process. Herein we report an enhanced conversion route of MDA in the presence of methanol on Mo-based zeolite materials. Compared to regular ZSM-5, ZSM-11, and their mechanically mixed counterparts, Mo embedded in ZSM-5/ZSM-11 intergrown matrix exhibits higher methane conversion (16.0%) and aromatics selectivity (62.5%) while limiting coke production to 12.1% under the co-feeding of methane and methanol (/ = 30). If no methanol addition, coke selectivity is up to 45.1% in MDA reaction. Additionally, hydrogen enriched syngas (/ = 6) was obtained as a co-product of the methane and methanol co-aromatization. NH-adsorbed H MAS NMR, Co titrated UV-vis and Raman spectroscopy characterizations reveal that a proper amount of Brönsted acid sites and the binuclear Mo anchored on the Al pairs at the intersection cavity may account for the superior reaction performance of the intergrown zeolites. A catalytic mechanism was also proposed via CHOH isotopic labeling tracer and C solid-state NMR studies. Methanol is first decomposed into CO/H, while CO is hydrogenated to CH and converted into CO via the water-gas shift reaction. Alternatively, methanol is converted into CO/CO through formate intermediates. Subsequently, CO reduces coke deposition via the reverse Boudart reaction, which improves the catalytic performance.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deciphering the application efficacy of titanium dioxide mediated calcareous nanocatalyst towards biodiesel production 解读二氧化钛介导的钙钛矿纳米催化剂在生物柴油生产中的应用效果

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-08 DOI: 10.1016/j.mtsust.2024.100911

Rashid Imran Ahmad Khan, Nabanita Ghosh, Sadaf Ahmad, Kashish Varshney, Mohammad Nasir, Gopinath Halder

{"title":"Deciphering the application efficacy of titanium dioxide mediated calcareous nanocatalyst towards biodiesel production","authors":"Rashid Imran Ahmad Khan, Nabanita Ghosh, Sadaf Ahmad, Kashish Varshney, Mohammad Nasir, Gopinath Halder","doi":"10.1016/j.mtsust.2024.100911","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100911","url":null,"abstract":"The current investigation delved into the mechanistic insight, and cost-competent application of CaO-derived nanocataysts doped with TiO for enhanced biodiesel synthesis from castor oil. Calcium oxide-laden nanocatalysts were prepared via co-precipitation methodology with varying precursor and calcination temperatures concentrations. The engineered catalysts underwent characterization using XRD, SEM, particle size analysis, FTIR, EDX, UV-spectroscopy, and zeta potential measurements. Response surface methodology was implemented to create an experimental matrix for the transesterification. With methanol: oil ratio of 12:1, 5% catalyst weight, 2.25 h reaction interval, and a temperature of 60 °C, the utmost biodiesel yield achieved was 94.27%. Furthermore, the ester-enriched biodiesel was confirmed through GC-MS, H NMR, C NMR and FTIR analyses. Kinetic and thermodynamic studies revealed the endothermic and irreversible nature of the transesterification reaction. The fuel characteristics of the synthesized castor oil biodiesel are within acceptable ranges. The co-precipitation-derived nano TiO@CaO catalyst validated impressive catalytic efficacy and stability, making it a proficient heterogeneous catalyst for augmented biodiesel manufacturing from castor oil. The projected expenses for 1 kg TiO@CaO catalyst and 1 L COBD, obtained from cost assessments, were $ 6.37 and $ 0.578, respectively, showcasing their strong economic feasibility. Lastly, the study also offered future outlooks based on recognized gaps in the reported studies across a contemporary bibliometric investigation.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing SERS label-free detection of bacteria: Sensing in liquid vs drop-cast 推进 SERS 无标记细菌检测：液体传感与滴注传感

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-06 DOI: 10.1016/j.mtsust.2024.100912

Elinor Bickerstaff-Westbrook, Anastasiia Tukova, Nana Lyu, Chao Shen, Alison Rodger, Yuling Wang

{"title":"Advancing SERS label-free detection of bacteria: Sensing in liquid vs drop-cast","authors":"Elinor Bickerstaff-Westbrook, Anastasiia Tukova, Nana Lyu, Chao Shen, Alison Rodger, Yuling Wang","doi":"10.1016/j.mtsust.2024.100912","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100912","url":null,"abstract":"Rapid and reliable detection of antimicrobial-resistant (AMR) bacteria is critical in combatting the growing threat of multi-drug resistance. Among all the available detection techniques, surface-enhanced Raman scattering (SERS) has emerged as a powerful tool for detecting a vast range of molecules and microorganisms, with significant potential for identifying bacterial strains. However, current studies using SERS predominantly utilize a drop-cast method, where a bacterial sample is dried with the SERS substrate to produce SERS spectra of bacteria. While effective, this method is time-consuming and less consistent. In this study, we propose a liquid-based SERS method for the rapid identification and differentiation of bacteria strains. Using gold nanoparticles (AuNPs) as the SERS substrate, we focus on detecting and distinguishing and in aqueous samples. Our study investigates multiple variables including nanoparticle size (30, 50, and 80 nm), surface charge/capping agent (negative and positive), and analyte suspension media (water and 0.9% NaCl). We found that fresh bacteria samples in 0.9% NaCl mixed with citrate coated AuNPs with the size of 50 nm yielded optimal parameters for bacteria detection. Comparing drop-cast and liquid methods for SERS detection, we determined that the liquid method provided clearer and more consistent SERS spectra, facilitating effective analysis using Principal Component Analysis (PCA). Our method reliably differentiated bacterial strains and identified molecular features responsible for their differentiation. Overall, this manuscript presents a reproducible, straightforward, and efficient approach for bacteria detection and differentiation using SERS, contributing to strategies aimed at combating the spread of antibiotic-resistant bacteria.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced visible light utilization of BiOI/BiOBr/Bi composite catalytic materials for photocatalytic degradation of TC and reduction of Cr(Ⅵ) 提高 BiOI/BiOBr/Bi 复合催化材料在光催化降解 TC 和还原 Cr(Ⅵ) 过程中的可见光利用率

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-06 DOI: 10.1016/j.mtsust.2024.100909

Xu Wang, Haiou Liang, Xuanmo Zhao, Xiaoye Fan, Jie Bai

{"title":"Enhanced visible light utilization of BiOI/BiOBr/Bi composite catalytic materials for photocatalytic degradation of TC and reduction of Cr(Ⅵ)","authors":"Xu Wang, Haiou Liang, Xuanmo Zhao, Xiaoye Fan, Jie Bai","doi":"10.1016/j.mtsust.2024.100909","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100909","url":null,"abstract":"The rational design and construction of semiconductor photocatalytic materials are important significance for efficient utilization of solar energy and enhancement of photocatalytic activity. In this study, composite photocatalytic materials modified with Bi on the surface of BiOI/BiOBr heterojunction were successfully constructed based on the current mature electrostatic spinning technology by using solvothermal and in-situ reduction methods. The successful preparation of BiOI/BiOBr/Bi composites was confirmed by a series of characterization methods. The composite photocatalyst was applied to the degradation of pollutants, and by adjusting the addition ratio of different substances, it was found that the photocatalytic composites prepared with the addition of 0.125 mmol NaBH and the ratio of I/Br of 3:1 showed the best performance. The degradation efficiency of the catalyst for tetracycline hydrochloride (TC) at 10 mg/L reached 98.4 % after 180 min of visible light irradiation, and the high degradation performance of the material was maintained after five cycles. Meanwhile, the reduction efficiency of the material for Cr(VI) was 98.2 % after 100 min of visible light irradiation. Free radical trapping experiments demonstrated that photogenerated holes (h) and superoxide radicals (•O) are the main active substances for photocatalytic degradation of TC. Due to the partial reduction of Bi, the absorption of the catalyst in the near-infrared region was enlarged, which enhanced the photothermal effect of the whole material and further improved the catalyst activity.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Marine waste as a resource: Developing bio-epoxy composites for a sustainable future 作为资源的海洋废弃物：为可持续未来开发生物环氧复合材料

IF 7.8 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-05 DOI: 10.1016/j.mtsust.2024.100908

Arulmozhivarman Joseph Chandran, Sanjay Mavinkere Rangappa, Indran Suyambulingam, Gaurav Manik, Suchart Siengchin

{"title":"Marine waste as a resource: Developing bio-epoxy composites for a sustainable future","authors":"Arulmozhivarman Joseph Chandran, Sanjay Mavinkere Rangappa, Indran Suyambulingam, Gaurav Manik, Suchart Siengchin","doi":"10.1016/j.mtsust.2024.100908","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100908","url":null,"abstract":"Biowastes from discarded fishscales and seashells are rich sources of natural polymers, such as collagen, keratin, and calcium carbonate, that can be used to produce eco-friendly and biodegradable polymer composites. Therefore, utilizing the biowastes for manufacturing polymer composite can offer significant economic, environmental, and social benefits. This experimental study explores the use of Biopoxy matrix (SR33) and fish scale and seashell powders derived from biowastes as filler reinforcements while the composites were manufactured through open mold stir casting technique. Thereafter, the fillers were extracted and processed from raw waste sources, and were characterized using XRD and FTIR analyses. Mechanical and physical properties, including density, water absorption, fracture morphology, flexural, tensile, impact strength, and hardness, were also evaluated to assess the composite's performance. Additionally, thermal properties were investigated through DSC and TGA analyses. Interestingly, the results revealed that green composites with fish scale fillers at 2.5 wt% and seashell fillers at 7.5 wt% exhibited superior performance captured through enhanced mechanical and thermal properties control composite samples, suggesting their efficacy in reinforcing the biopoxy matrix. The study underscores the potential of utilizing biowaste-derived fillers for sustainable and eco-friendly composite materials. The combination of biopoxy with these specific filler concentrations presents a promising avenue for developing green composites with favorable mechanical and thermal characteristics, contributing to the ongoing efforts for sustainable material development.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rational design of precious tetrametallic single-cluster catalysts for electrocatalytic nitrate reduction reaction 合理设计用于电催化硝酸盐还原反应的珍贵四金属单簇催化剂

IF 7.1 3区材料科学

Materials Today Sustainability Pub Date : 2024-07-04 DOI: 10.1016/j.mtsust.2024.100903

Ruochen Zhu , Riming Hu , Haoyu Wang , Xuchuan Jiang , Jiayuan Yu

{"title":"Rational design of precious tetrametallic single-cluster catalysts for electrocatalytic nitrate reduction reaction","authors":"Ruochen Zhu , Riming Hu , Haoyu Wang , Xuchuan Jiang , Jiayuan Yu","doi":"10.1016/j.mtsust.2024.100903","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100903","url":null,"abstract":"<div>Single cluster catalysts (SCCs) with high metal loading can exhibit extraordinary catalytic activity in electrocatalytic reactions, but the rational design of active sites remains a challenge. Herein, we proposed a series of SCCs with pyramid-shaped precious tetrametallic clusters anchored on g-CN monolayer (M4/g-CN) as efficient catalysts for the electrochemical reduction of nitrate to ammonia (NO3RR). By means of first-principle computations, the stability, catalytic mechanism and activity, as well as selectivity of these SCCs are systematically investigated. The calculation results show that most SCCs (Ru4/g-CN, Rh4/g-CN, Pd4/g-CN, Os4/g-CN, Ir4/g-CN, Pt4/g-CN) are thermodynamically stable due to the strong binding energy and significant charge transfer behavior between tetrametallic clusters and g-CN support. More important, the volcano curve between limiting potentials and adsorption free energy of NO3‾ can be established, in which Ir4/g-CN can exhibit optimal NO3RR activity due to its location of volcano top. Further analysis of electronic structures reveals that the special pyramid configuration can significantly promote the enrichment of charge on active site and elevate its d-band center, and thus facilitates the NO3RR. This finding pours new vigor into the development of the SCCs family.</div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0