Wei Li, Nan He, Qing Suo, Yingting Yin, Huiyu Jiang
{"title":"Extraction of pigments from grouper root and their applications for functional textiles","authors":"Wei Li, Nan He, Qing Suo, Yingting Yin, Huiyu Jiang","doi":"10.1680/jemmr.25.00139","DOIUrl":"https://doi.org/10.1680/jemmr.25.00139","url":null,"abstract":"As a sustainable and ecological dye resource, biomass materials are garnering increasing attention. In this study, pigments extracted from grouper root were utilized for dyeing modified cotton fabrics, and various properties were investigated. First, the optimal parameters for extracting dyes from the grouper root using ultrasound were investigated. The extracted dyes were analyzed by UV/Vis, FTIR, and liquid chromatography–mass spectrometry. Subsequently, the extracts were applied to dye specially modified cotton fabrics, and potential mechanisms were proposed. The color fastness, UV resistance, antioxidant properties, and antibacterial efficacy were evaluated post-dyeing. The results indicated that the primary constituents of grouper pigments are anthocyanins. After modifying the cotton fabrics with 3-chloro-2-hydroxypropyltrimethylammonium chloride (CHPTAC) and chitosan, the dyeing performance of the fabrics with root extracts was significantly enhanced. Furthermore, the samples exhibited improved dyeing performance and functionality following the CHPTAC modification treatment. The dyed fabric achieved a K/S value of 9.1564, wash and rubbing fastness above 4.0, a ultraviolet protection factor of 204.17, over 80% antioxidant activity, and >95% antimicrobial efficacy against Escherichia coli and Staphylococcus aureus. Excellent performance persisted after 20 washes, demonstrating the potential of natural dyes in developing durable, functional textiles.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147898646","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}
{"title":"Basic properties, durability and microstructure of alkali-activated hemihydrate phosphogypsum incorporating with ground granulated blast furnace slag (GGBFS)","authors":"Guoshuai Yan, Zhenzhen Lu, Bowen Feng","doi":"10.1680/jemmr.25.00026","DOIUrl":"https://doi.org/10.1680/jemmr.25.00026","url":null,"abstract":"Cement production has generated substantial greenhouse gas emissions, contributing to environmental pollution. This study investigates eco-friendly alkali-activated materials using hemihydrate phosphogypsum and ground granulated blast furnace slag (GGBFS), combining basic properties and durability with microstructure. The basic properties were evaluated, including fluidity and consistency, mechanical strength under different cured times, and drying shrinkage. The durability included freeze-thaw cycles, sulfate corrosion, and chloride-ion permeation tests. Furthermore, the microstructure and mechanism of modified alkali-activated materials were analysed using X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy techniques. The results showed that the binary system created better properties including the enhanced mechanical strength, the compensatory fluidity and consistency, and the optimised durability. The incorporation of GGBFS led to a reduction in fluidity and consistency. Due to the suitable contents of GGBFS, the hydration products in the binary system were dominated by C-S-H, and gypsum, which influenced changes in the properties of the binary system. A 40% slag contents facilitated process of the hydration gels of the system. The use of those solid wastes, such as hemihydrate phosphogypsum and slag, provided a sustainable development for cementitious materials and environmental conservation.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"14 3","pages":"292-303"},"PeriodicalIF":0.0,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147382061","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}
Meichen Liu, Zheng Wang, Ling Wang, Xiaofei Zhang, Junwan Li
{"title":"Synthesis of quaternized glass fiber filter and study on its adsorption for Pu (IV)","authors":"Meichen Liu, Zheng Wang, Ling Wang, Xiaofei Zhang, Junwan Li","doi":"10.1680/jemmr.23.00121","DOIUrl":"https://doi.org/10.1680/jemmr.23.00121","url":null,"abstract":"In this study, a novel pretreatment material was developed for the separation of trace plutonium (Pu) in complex systems. Glass fiber filters, known for their resistance to chemical corrosion, radiation and thermal stability, were used as the base material for separation and enrichment. However, the number of active groups on the surface of the matrix material was limited, resulting in poor chemical grafting efficiency. To address this, a new method is proposed involving deposition and chemical grafting. A polydopamine coating was formed on the filter surface through the oxidation and self-polymerization reaction of dopamine. Subsequently, the coupling agent chloromethyltrimethoxysilane and the extraction agent trioctylamine were employed to quaternize the glass fiber filter, resulting in the synthesis of a novel pretreatment material. Various characterization techniques were employed to investigate the morphology and surface functional group structure. Finally, the material was applied in the adsorption of trace plutonium, and the adsorption performance and mechanism for plutonium (IV) (Pu 4+ ) were explored. The adsorption results indicated that when the nitrate acidity was 4 mol/l, the adsorption capacity of the material reached its maximum value. The adsorption capacity reached equilibrium within 360 s. The maximum adsorption capacity of GF-PD-CTS-TOA for plutonium (IV) was 20.35 mg/g (0.085 mmol/g). Complex anions Pu(NO 3 ) 6 2− and Pu(NO 3 ) 5 − were the main forms of plutonium (IV) adsorption. This is the first time that this method was used to modify glass fiber filters, and this study represents the first application of functionalized glass fiber filters in the analysis and separation of radioactive elements during reprocessing.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"13 3","pages":"249-261"},"PeriodicalIF":0.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892550","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}
Pooja Chaudhary, Rajeev Kumar Chauhan, Rajan Mishra
{"title":"Performance enhancement of Sb2Se3 solar cell with IGZO and n-ZnO as electron transport layers","authors":"Pooja Chaudhary, Rajeev Kumar Chauhan, Rajan Mishra","doi":"10.1680/jemmr.23.00019","DOIUrl":"https://doi.org/10.1680/jemmr.23.00019","url":null,"abstract":"A prototype of an antimony (III) selenide (Sb<sub>2</sub>Se<sub>3</sub>) solar cell with different electron transport layers (ETLs) was simulated using the Solar Cell Capacitance Simulator (SCAPS) software. The impact of two individual ETLs – namely, indium gallium zinc oxide (IGZO) and n-type zinc oxide (n-ZnO) – was analyzed, and it was found out that n-ZnO was best for the ETL. The n-ZnO, antimony (III) selenide and Indium gallium zinc oxide (IGZO) layers in the newly proposed structure have respective thicknesses of 50, 300 and 20 nm. To achieve the optimum performance of this prototype, the acceptor concentration of copper (II) oxide is taken as 10<sup>18</sup> cm<sup>−2</sup> and the donor concentration of n-ZnO is taken as 10<sup>20</sup> cm<sup>−2</sup>. The defect densities at antimony (III) selenide and antimony (III) selenide/n-ZnO are taken as 10<sup>13</sup> and 10<sup>10</sup> cm<sup>−2</sup>, respectively. They play a crucial part in device performance. With the optimized structure, a maximum power conversion efficiency of up to 31.72% (<i>V</i> <sub>OC</sub> = 1.148 V, <i>J</i> <sub>SC</sub> = 48.30 mA/cm<sup>2</sup> and fill factor = 88.50%) is obtained with n-ZnO as the ETL. For effective results, the defect densities at both interfaces are taken as 10<sup>9</sup> cm<sup>−2</sup>, and maximum efficiency is achieved. Numerical analysis of the proposed structure and study of various parameters such as thickness variation at the absorber layer, series resistance and temperature variation, defect density, metal function and interface density variation were done.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"23 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140826699","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}
{"title":"The shape recovery behavior of compressively deformed Fe–Mn–Si–Cr–Ni alloys","authors":"A Syed Bava Bakrudeen, D Jeyasimman","doi":"10.1680/jemmr.23.00090","DOIUrl":"https://doi.org/10.1680/jemmr.23.00090","url":null,"abstract":"Cylindrical alloys fabricated from shape memory Fe–<i>x</i>Mn–5Si–5Ni–<i>y</i>Cr were produced by utilizing diverse solid volume fractions through the use of the powder metallurgy and sintering technique. The shape recovery due to compressive force was analyzed and correlated with the volume fractions. A higher concentration of manganese (Mn) will result in a decrease in shape recovery as a result of the formation of oxides, precipitates and unintended intermetallics during the furnace cooling process. The dislocation occurring within and around the grain boundary is another significant factor contributing to the reduction in shape recovery. The increase in chromium (Cr) content reduces the likelihood of dislocation around the grain boundary. The effectiveness of compressive deformation was examined and correlated.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"10 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140838376","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}
{"title":"Study of a mechano-electrochemical model: a numerical and experimental approach","authors":"Shengli Lv, Yuanyang Miao, Wei Zhang, Tirumalai S Srivatsan, Xiaosheng Gao","doi":"10.1680/jemmr.22.00179","DOIUrl":"https://doi.org/10.1680/jemmr.22.00179","url":null,"abstract":"The mechanochemical effects of elasticity and plasticity are introduced into a peridynamic (PD) corrosion model. A PD equation that couples the mechanics and kinetics of electrochemistry is proposed for the first time. This clarifies the influence of the mechanical load in governing the occurrence of diffusion during corrosion. The phase changes experienced by a material are used to characterize the movement of the corrosion boundary, and the concentration of material points is used to characterize the degree and extent of damage caused to the chosen metal. Immersion tests and in situ electrochemical tests are carried out, and the results are used to explore the effects of stress and/or load on the kinetics of environment-induced damage to an aluminum alloy. The model predictions are in good agreement with the experimental observations. The results of this study demonstrate that a coupled mechano-electrochemical PD corrosion model can capture corrosion-induced damage and can be used to study damage propagation upon exposure to an aggressive environment.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"11 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140838581","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}
Hao Su, Zhonghua Ma, Mingtao Ding, Ye Li, Lianfa Dang, Kuo Yang, Fangfei Li, Bing Xue
{"title":"Preparation and characterization of expanded dickite/decanoic acid phase-change materials","authors":"Hao Su, Zhonghua Ma, Mingtao Ding, Ye Li, Lianfa Dang, Kuo Yang, Fangfei Li, Bing Xue","doi":"10.1680/jemmr.22.00218","DOIUrl":"https://doi.org/10.1680/jemmr.22.00218","url":null,"abstract":"The leakage of phase-change materials presents a significant challenge that impedes their application. Loading porous materials onto phase-change materials is an effective approach to addressing this issue. In this study, porous expanded dickite as a carrier was utilized to load decanoic acid and create a composite phase-change material. The loading content of decanoic acid was varied to obtain different composite phase-change materials. Fourier transform infrared spectroscopy analysis confirmed the formation of hydrogen bonds between the expanded dickite carrier and decanoic acid. Scanning electron microscopy images and energy-dispersive X-ray spectroscopy mapping results demonstrated that decanoic acid was evenly dispersed on the expanded dickite carrier without any agglomeration. The expanded dickite carrier effectively immobilized decanoic acid through hydrogen bonding, thereby preventing leakage, as long as the loading content of decanoic acid did not exceed 60%. The higher thermal conductivity of the expanded dickite carrier promoted the thermal conductivity of the expanded dickite/decanoic acid composite phase-change materials, enhancing the responsiveness of the composite phase-change materials to ambient temperature. The composite phase-change material containing 60 wt% decanoic acid exhibited excellent endothermic/exothermic cycle stability, and after six cycles, its latent heat remained stable.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"7 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140838377","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}
Pingan Lu, Chenbo Liao, Dongjiu Zhang, Dongqing Liu, Mohamed M Ibrahim, Haifeng Cheng, Mohammed A Amin, Taishan Cao, Yingjun Deng, Wei Xie, Zeinhom M El-Bahy, Zhanhu Guo
{"title":"Controllable preparation and electromagnetic wave absorption performance of compressible graphene aerogels","authors":"Pingan Lu, Chenbo Liao, Dongjiu Zhang, Dongqing Liu, Mohamed M Ibrahim, Haifeng Cheng, Mohammed A Amin, Taishan Cao, Yingjun Deng, Wei Xie, Zeinhom M El-Bahy, Zhanhu Guo","doi":"10.1680/jemmr.23.00015","DOIUrl":"https://doi.org/10.1680/jemmr.23.00015","url":null,"abstract":"In this study, an easy-operation developed method was adopted to generate ultralight and compressible graphene aerogels by using graphene oxide and ammonia. By changing the process parameters, such as reduction temperature, reducing agent content and ammonia concentration, the variation laws of density and pore size of aerogel were obtained, which was conducive to realizing the controllable preparation of aerogel structure. The prepared graphene aerogel has good compressive performance and its density can reach 5.26 mg/cm<sup>3</sup>. Though repeatedly compressed 200 times under the load that is 4000 times as large as its own weight, it still maintained the structural integrity and mechanical properties. An ideal model of three-dimensional graphene aerogel was constructed, and the electromagnetic wave absorption performance was simulated by computer simulation technology (CST) microwave studio. The results show that when the thickness, pore size and height of the sheet are 1.4 mm, 5 mm and 14 mm respectively, the optimal electromagnetic wave absorption effect of −31.08 dB can be obtained, and the effects of thickness, pore size and height of the sheet on the electromagnetic wave absorption performance are revealed, which provides a reference for the structural design of aerogel with both compressibility and electromagnetic wave absorption performance.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"16 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201253","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}
{"title":"Chemically reduced silver nanoparticles towards photocatalytic and electrocatalytic applications","authors":"Da-Qing Tan, Meng-Yao Dong, Yi-jie Xia, Xuan-Ye Wang, Hui-Ge Wei","doi":"10.1680/jemmr.23.00064","DOIUrl":"https://doi.org/10.1680/jemmr.23.00064","url":null,"abstract":"In virtue of unique physiochemical properties, silver nanoparticles (AgNPs) have attracted enormous research interest for versatile applications. It is critical to study the effect of the microstructure, e.g., the shape and the size of AgNPs on their performance. Herein, AgNPs with varying shapes and sizes were synthesized by varying the manner of the reducing agent NaBH4 added (i.e., multi-step and one-step reduction methods), and then were studied for photocatalytic of dyes and electrocatalytic oxidation of glucose. The results showed that triangular, spherical, or the mixture of triangular/spherical shaped AgNPs were obtained from multi-step reduction method, whereas only spherical shaped AgNPs were yielded from the one-step reduction method. The sizes could be manipulated by changing the concentrations of the reagents or the reaction temperature. The triangular shaped and smaller-sized AgNPs were more effective for photocatalytic of dyes, and the degradation percent of methylene blue was enhanced to 95% for the Ag-TiO2 complex from 50% for pure TiO2. Moreover, the spherical shaped AgNPs with smaller size could effectively detect glucose at a very low concentration of 5 to 10 mM with an excellent glucose tolerance.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"331 2","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138625674","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}
Enoch Asuako Larson, Samuel Adu-Gyamfi, Abankwa Omari Ebenezer, M. Augustine, Philip Yamba, S. T. Azeko, Denis E K Dzebre
{"title":"Influencing effects of variant laser pulse energy on fatigue behavior induced via LSP","authors":"Enoch Asuako Larson, Samuel Adu-Gyamfi, Abankwa Omari Ebenezer, M. Augustine, Philip Yamba, S. T. Azeko, Denis E K Dzebre","doi":"10.1680/jemmr.22.00217","DOIUrl":"https://doi.org/10.1680/jemmr.22.00217","url":null,"abstract":"The set objective in this current study is to understand the effects of laser shock processing of variant laser pulse energies on residual compressive stress, microhardness, fatigue fracture, and fatigue life on the application of aircraft lug material. The effect of three variant laser pulse energies 3, 4, and 5.7 J were employed to examine alongside the laser processing parameters. A Q-switch (Nd-YAG) laser system was used in this experiment with wavelength, pulse width, spot diameter, and overlapping ratios of 1046 nm, 10 nm, 3 mm, and 50 %, respectively. After LSP, the superficial layer stress state shows varied results from tensile to residual stress of 50 MPa, to −225 MPa, −260 MPa, and −301 MPa, after 3 J, 4 J, and 5.7 J, respectively. The microhardness for the as-received specimen was 137 HV. However, after LSP it increased to 198 HV, 210 HV, and 223 HV, respectively. The fatigue life performance also experienced a significant increase up to 53,371 (2 x 105 cycles).","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"8 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138627453","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}