Pub Date : 2026-01-14DOI: 10.1016/j.mtsust.2026.101304
L. Ojeda , J. Oliva , G. Gonzalez-Contreras , T.A. Esquivel-Castro , K.P. Padmasree , A.I. Mtz-Enriquez , V. Rodriguez-Gonzalez
This work reports AgSe/SbTe-based thermoelectric (THME) devices and their use as temperature sensors. The AgSe//SbTe-THME device produced an open-circuit-voltage (VO) of 32 mV, a power density (PD) of 100 nW cm−2 and an absolute seebeck-coeficient of 320 μV K−1 in range of 40–100 °C. Later, the AgSe electrode was replaced with AgSe + Boron nitride (BN) electrode, creating a (AgSe + BN)//SbTe-THME device. The SbTe electrode was also replaced by SbTe + SiO2/MnO/Graphene electrode, and this device was named as AgSe//(SbTe + MnO)-THME. We obtained VO values (at of 40–100 °C) of 480 mV and 520 mV for the (AgSe + BN)//SbTe-THME and AgSe//(SbTe + MnO)-THME devices, respectively. Those values are 14–15 times higher with respect to the AgSe//SbTe-THME device. The highest power/Seebeck coefficient of 0.9 μW cm−2/5.21 mV K−1 was obtained for the AgSe//(SbTe + MnO)-THME device. The devices above with BN and MnO were also evaluated as temperature sensors (TS) and the lowest response time (Res) of 12.88 s and the highest sensitivity (TCR) of 2.92 % °C−1 were obtained from the (AgSe + BN)//SbTe-TS sensor. Raman and UV–Vis techniques demonstrated that decreasing the content of defects on the electrodes increased the voltages generated by the THME devices and decreased the response times of the sensors. XPS demonstrated that the chemical stability is maintained only in the electrodes of the (AgSe + BN)//SbTe-TS devices despite the increase of temperature, therefore, they increased their sensitivity for the detection of temperature at higher temperatures. The dual devices with thermoelectric and temperature-sensor functions were fabricated on recycled plastics, which reduced considerably their cost.
{"title":"Adding boron nitride or SiO2/MnO/graphene composite to a flexible thermoelectric generator to change its operation mode to temperature sensor","authors":"L. Ojeda , J. Oliva , G. Gonzalez-Contreras , T.A. Esquivel-Castro , K.P. Padmasree , A.I. Mtz-Enriquez , V. Rodriguez-Gonzalez","doi":"10.1016/j.mtsust.2026.101304","DOIUrl":"10.1016/j.mtsust.2026.101304","url":null,"abstract":"<div><div>This work reports AgSe/SbTe-based thermoelectric (THME) devices and their use as temperature sensors. The AgSe//SbTe-THME device produced an open-circuit-voltage (V<sub>O</sub>) of 32 mV, a power density (P<sub>D</sub>) of 100 nW cm<sup>−2</sup> and an absolute seebeck-coeficient <span><math><mrow><mo>|</mo><mi>S</mi><mo>|</mo></mrow></math></span> of 320 μV K<sup>−1</sup> in <span><math><mrow><mo>Δ</mo><mi>T</mi></mrow></math></span> range of 40–100 °C. Later, the AgSe electrode was replaced with AgSe + Boron nitride (BN) electrode, creating a (AgSe + BN)//SbTe-THME device. The SbTe electrode was also replaced by SbTe + SiO<sub>2</sub>/MnO/Graphene electrode, and this device was named as AgSe//(SbTe + MnO)-THME. We obtained V<sub>O</sub> values (at <span><math><mrow><mo>Δ</mo><mi>T</mi></mrow></math></span> of 40–100 °C) of 480 mV and 520 mV for the (AgSe + BN)//SbTe-THME and AgSe//(SbTe + MnO)-THME devices, respectively. Those values are 14–15 times higher with respect to the AgSe//SbTe-THME device. The highest power/Seebeck coefficient of 0.9 μW cm<sup>−2</sup>/5.21 mV K<sup>−1</sup> was obtained for the AgSe//(SbTe + MnO)-THME device. The devices above with BN and MnO were also evaluated as temperature sensors (TS) and the lowest response time (Res) of 12.88 s and the highest sensitivity (TCR) of 2.92 % °C<sup>−1</sup> were obtained from the (AgSe + BN)//SbTe-TS sensor. Raman and UV–Vis techniques demonstrated that decreasing the content of defects on the electrodes increased the voltages generated by the THME devices and decreased the response times of the sensors. XPS demonstrated that the chemical stability is maintained only in the electrodes of the (AgSe + BN)//SbTe-TS devices despite the increase of temperature, therefore, they increased their sensitivity for the detection of temperature at higher temperatures. The dual devices with thermoelectric and temperature-sensor functions were fabricated on recycled plastics, which reduced considerably their cost.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101304"},"PeriodicalIF":7.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022701","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}
Pub Date : 2026-01-14DOI: 10.1016/j.mtsust.2026.101307
Siti Adawiyah Zulkefli , Nurin Tihani Nazemi , Zatul Faqihah Mohd Salaha , Gan Hong Seng , Mohammed Rafiq Abdul Kadir , Muhammad Hanif Ramlee
Magnesium and its alloys are promising biodegradable implant materials for developing orthopaedic implants. However, the drawback of pure Mg and Mg alloys is their high degradation rate in a biological environment. Thus, several strategies are implemented to enhance corrosion resistance and biocompatibility and achieve a controlled degradation rate for these implants by using surface modification. This systematic review addressed the importance of corrosion rate, mechanical properties, toxicity, and bone healing of the biodegradable metallic implant coated with other materials. From the review, the study indicates that chemical and physical coatings are among the most extensively studied strategies for enhancing the performance of orthopaedic implants. For example, a composite coating made of polycaprolactone (PCL), and amorphous calcium carbonate (ACC) particles has shown improved corrosion resistance when tested in simulated body fluid (SBF). Furthermore, bioactivity osteointegration could be enhanced by calcium phosphate (CaP) coating, such as brushite, β-tricalcium phosphate, and hydroxyapatite. Several studies have shown that a compact HA coating has excellent corrosion resistance and good biocompatibility, which are suitable for biodegradable metal orthopaedic implants. These findings highlight the various successful surface modification methods that could enhance the biodegradable metal implants.
{"title":"Effects of corrosion rate, mechanical properties, toxicity, and bone healing towards different surface modification of biodegradable metallic: A systematic review","authors":"Siti Adawiyah Zulkefli , Nurin Tihani Nazemi , Zatul Faqihah Mohd Salaha , Gan Hong Seng , Mohammed Rafiq Abdul Kadir , Muhammad Hanif Ramlee","doi":"10.1016/j.mtsust.2026.101307","DOIUrl":"10.1016/j.mtsust.2026.101307","url":null,"abstract":"<div><div>Magnesium and its alloys are promising biodegradable implant materials for developing orthopaedic implants. However, the drawback of pure Mg and Mg alloys is their high degradation rate in a biological environment. Thus, several strategies are implemented to enhance corrosion resistance and biocompatibility and achieve a controlled degradation rate for these implants by using surface modification. This systematic review addressed the importance of corrosion rate, mechanical properties, toxicity, and bone healing of the biodegradable metallic implant coated with other materials. From the review, the study indicates that chemical and physical coatings are among the most extensively studied strategies for enhancing the performance of orthopaedic implants. For example, a composite coating made of polycaprolactone (PCL), and amorphous calcium carbonate (ACC) particles has shown improved corrosion resistance when tested in simulated body fluid (SBF). Furthermore, bioactivity osteointegration could be enhanced by calcium phosphate (CaP) coating, such as brushite, β-tricalcium phosphate, and hydroxyapatite. Several studies have shown that a compact HA coating has excellent corrosion resistance and good biocompatibility, which are suitable for biodegradable metal orthopaedic implants. These findings highlight the various successful surface modification methods that could enhance the biodegradable metal implants.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101307"},"PeriodicalIF":7.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022706","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}
Pub Date : 2026-01-13DOI: 10.1016/j.mtsust.2026.101305
Md. Abdullah , Mohammad Obayedullah , Md. Abul Khair , Md Habibullah , Md. Nahidul Islam , Delowar Hossain , Md. Shariful Islam Shuvo
The integration of nanotechnology into phase change materials (PCMs) has substantially advanced thermal energy storage and thermoregulation technologies across diverse sectors, including building construction, electronics cooling, smart textiles, and renewable energy systems. This review provides a comprehensive and critical synthesis of recent progress in nano-enhanced phase change materials (NePCMs), focusing on how nanomaterial incorporation modifies thermophysical behavior, durability, and application performance. Various nanomaterials—such as graphene, carbon nanotubes, and metal oxides are examined for their roles in enhancing thermal conductivity, regulating phase transition kinetics, and improving overall energy efficiency. Compared with conventional PCMs, NePCMs demonstrate markedly improved performance, with reported thermal conductivity enhancements of 20–160 % at nanoparticle loadings of 0.1–5 wt.%, while maintaining latent heat reductions within an acceptable range of <10–15 %. Hybrid nanomaterials and advanced encapsulation strategies, including in-situ polymerization and silica shell encapsulation, enable 10–30 % reductions in melting and solidification times and 30–70 % suppression of supercooling, alongside enhanced leakage resistance. Long-term reliability is evidenced by > 90–95 % latent heat retention after 200–500 thermal cycles. For thermoregulation applications, system-level energy efficiency improvements of 10–25 % are reported within operating temperature windows of 20–200 °C. Despite these advances, critical challenges persist, including nanoparticle agglomeration, increased viscosity, scalability constraints, material cost escalation of 10–40 %, and unresolved environmental and health concerns. This review also evaluates emerging applications in smart textiles, electronics, temperature-controlled packaging, and solar thermal systems, highlighting the cross-sector potential of NePCMs. Furthermore, it addresses sustainability considerations, emphasizing lifecycle assessment, green synthesis, and risk mitigation strategies. Novel insights into artificial intelligence-assisted property prediction and material optimization are discussed. Overall, this work provides a quantitatively benchmarked, application-driven roadmap for the sustainable development and industrial deployment of next-generation NePCMs.
{"title":"Advances in nanotechnology in phase change materials and their applications","authors":"Md. Abdullah , Mohammad Obayedullah , Md. Abul Khair , Md Habibullah , Md. Nahidul Islam , Delowar Hossain , Md. Shariful Islam Shuvo","doi":"10.1016/j.mtsust.2026.101305","DOIUrl":"10.1016/j.mtsust.2026.101305","url":null,"abstract":"<div><div>The integration of nanotechnology into phase change materials (PCMs) has substantially advanced thermal energy storage and thermoregulation technologies across diverse sectors, including building construction, electronics cooling, smart textiles, and renewable energy systems. This review provides a comprehensive and critical synthesis of recent progress in nano-enhanced phase change materials (NePCMs), focusing on how nanomaterial incorporation modifies thermophysical behavior, durability, and application performance. Various nanomaterials—such as graphene, carbon nanotubes, and metal oxides are examined for their roles in enhancing thermal conductivity, regulating phase transition kinetics, and improving overall energy efficiency. Compared with conventional PCMs, NePCMs demonstrate markedly improved performance, with reported thermal conductivity enhancements of 20–160 % at nanoparticle loadings of 0.1–5 wt.%, while maintaining latent heat reductions within an acceptable range of <10–15 %. Hybrid nanomaterials and advanced encapsulation strategies, including in-situ polymerization and silica shell encapsulation, enable 10–30 % reductions in melting and solidification times and 30–70 % suppression of supercooling, alongside enhanced leakage resistance. Long-term reliability is evidenced by > 90–95 % latent heat retention after 200–500 thermal cycles. For thermoregulation applications, system-level energy efficiency improvements of 10–25 % are reported within operating temperature windows of 20–200 °C. Despite these advances, critical challenges persist, including nanoparticle agglomeration, increased viscosity, scalability constraints, material cost escalation of 10–40 %, and unresolved environmental and health concerns. This review also evaluates emerging applications in smart textiles, electronics, temperature-controlled packaging, and solar thermal systems, highlighting the cross-sector potential of NePCMs. Furthermore, it addresses sustainability considerations, emphasizing lifecycle assessment, green synthesis, and risk mitigation strategies. Novel insights into artificial intelligence-assisted property prediction and material optimization are discussed. Overall, this work provides a quantitatively benchmarked, application-driven roadmap for the sustainable development and industrial deployment of next-generation NePCMs.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101305"},"PeriodicalIF":7.9,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022704","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}
Pub Date : 2026-01-13DOI: 10.1016/j.mtsust.2026.101306
Fatemeh Mollaei , Ali Partovinia
Copper, despite its favorable frictional and thermal properties, poses significant environmental concerns, which necessitate the development of sustainable alternatives. In this study, the tribological performance of low-metallic copper-free brake pads reinforced with steel fibers was investigated using a Chase friction testing machine in accordance with the SAE J661 standard. Low-metallic brake pad friction composites reinforced with 10–30 wt% steel fibers were fabricated using hot molding as a manufacturing step. The composites were formed under heat and pressure and subsequently post-cured to obtain the final friction materials. The samples were evaluated for normal and hot friction coefficients and wear rate. To evaluate the mechanical integrity of the brake pad composites, shear strength testing was also performed. By eliminating copper and focusing on frictional stability at different temperatures in steel fiber-reinforced formulations, this method enables accurate and reproducible simulation of real-world braking conditions within a controlled laboratory environment. This approach offers a standardized framework for optimizing environmentally friendly friction materials for automotive applications. The results demonstrated that the formulation containing 15 wt% steel fiber exhibited the most balanced performance, showing a high hot friction coefficient (0.468) and normal friction coefficient of 0.439, indicating consistent friction behavior with low sensitivity to operating conditions, which is regarded as an acceptable coefficient of friction under normal braking conditions. Moreover, this formulation presented the lowest wear rate (4.236 %) and excellent thermal stability. These findings indicate that replacing copper with steel fiber reinforcement can maintain reliable frictional performance and durability, offering an environmentally friendly alternative to conventional copper-based brake pads.
{"title":"Sustainable and eco-friendly brake pads: Ensuring reliable copper-free performance with minimal steel fiber","authors":"Fatemeh Mollaei , Ali Partovinia","doi":"10.1016/j.mtsust.2026.101306","DOIUrl":"10.1016/j.mtsust.2026.101306","url":null,"abstract":"<div><div>Copper, despite its favorable frictional and thermal properties, poses significant environmental concerns, which necessitate the development of sustainable alternatives. In this study, the tribological performance of low-metallic copper-free brake pads reinforced with steel fibers was investigated using a Chase friction testing machine in accordance with the SAE J661 standard. Low-metallic brake pad friction composites reinforced with 10–30 wt% steel fibers were fabricated using hot molding as a manufacturing step. The composites were formed under heat and pressure and subsequently post-cured to obtain the final friction materials. The samples were evaluated for normal and hot friction coefficients and wear rate. To evaluate the mechanical integrity of the brake pad composites, shear strength testing was also performed. By eliminating copper and focusing on frictional stability at different temperatures in steel fiber-reinforced formulations, this method enables accurate and reproducible simulation of real-world braking conditions within a controlled laboratory environment. This approach offers a standardized framework for optimizing environmentally friendly friction materials for automotive applications. The results demonstrated that the formulation containing 15 wt% steel fiber exhibited the most balanced performance, showing a high hot friction coefficient (0.468) and normal friction coefficient of 0.439, indicating consistent friction behavior with low sensitivity to operating conditions, which is regarded as an acceptable coefficient of friction under normal braking conditions. Moreover, this formulation presented the lowest wear rate (4.236 %) and excellent thermal stability. These findings indicate that replacing copper with steel fiber reinforcement can maintain reliable frictional performance and durability, offering an environmentally friendly alternative to conventional copper-based brake pads.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101306"},"PeriodicalIF":7.9,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077818","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}
Pub Date : 2026-01-12DOI: 10.1016/j.mtsust.2026.101302
Chen Jiao , Osama Alfarraj , Amr Tolba , Jianyong Yu , Jong Hyuk Park
An integrated Analytic Hierarchy Process–Technique for Order Preference by Similarity to Ideal Solution (AHP–TOPSIS) framework is developed to support renewable energy planning in low-carbon port cities, with explicit attention to marine-pollution mitigation. The approach is applied to Ningbo–Zhoushan Port, China, using a criteria system organised into four main groups and twelve sub-criteria. Judgements from 50 experts indicate that environmental and marine-pollution impacts (weight = 0.36) dominate over technical performance (0.24), social/policy acceptance (0.22), and economic feasibility (0.18), with emission reduction and marine-pollution pressure together accounting for almost 0.29 of the total weight. Combining these weights with normalised performance scores, TOPSIS identifies offshore wind farms (closeness coefficient = 0.83) and hybrid systems with storage and hydrogen-readiness (0.80) as the most suitable options for Ningbo–Zhoushan, followed by coastal onshore wind and port-area solar photovoltaic. At the same time, waste-to-energy/biomass CHP ranks lowest. Scenario analysis confirms the robustness of these findings under varying environmental, cost, and reliability priorities, highlighting portfolios centred on offshore wind and hybrid systems as key to reducing port-related emissions and pressures on coastal waters.
{"title":"Integrated AHP–TOPSIS model for renewable energy planning in low-carbon port Cities: Implications for marine pollution mitigation","authors":"Chen Jiao , Osama Alfarraj , Amr Tolba , Jianyong Yu , Jong Hyuk Park","doi":"10.1016/j.mtsust.2026.101302","DOIUrl":"10.1016/j.mtsust.2026.101302","url":null,"abstract":"<div><div>An integrated Analytic Hierarchy Process–Technique for Order Preference by Similarity to Ideal Solution (AHP–TOPSIS) framework is developed to support renewable energy planning in low-carbon port cities, with explicit attention to marine-pollution mitigation. The approach is applied to Ningbo–Zhoushan Port, China, using a criteria system organised into four main groups and twelve sub-criteria. Judgements from 50 experts indicate that environmental and marine-pollution impacts (weight = 0.36) dominate over technical performance (0.24), social/policy acceptance (0.22), and economic feasibility (0.18), with emission reduction and marine-pollution pressure together accounting for almost 0.29 of the total weight. Combining these weights with normalised performance scores, TOPSIS identifies offshore wind farms (closeness coefficient = 0.83) and hybrid systems with storage and hydrogen-readiness (0.80) as the most suitable options for Ningbo–Zhoushan, followed by coastal onshore wind and port-area solar photovoltaic. At the same time, waste-to-energy/biomass CHP ranks lowest. Scenario analysis confirms the robustness of these findings under varying environmental, cost, and reliability priorities, highlighting portfolios centred on offshore wind and hybrid systems as key to reducing port-related emissions and pressures on coastal waters.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101302"},"PeriodicalIF":7.9,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976909","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}
Pub Date : 2026-01-11DOI: 10.1016/j.mtsust.2026.101303
Hongwei Pan , Yue Qu , Xueqin Hui , Haiquan Yue
Alveolar bone defects with insufficient bone mass, caused by trauma, tumors, congenital disorders, and periodontal inflammation, severely hinder natural tooth preservation and dental implantation, a key challenge in modern oral medicine. Guided bone regeneration(GBR) using barrier membranes is an essential strategy and standard clinical procedure to improve the efficiency of alveolar bone tissue repair. Both non-absorbable and absorbable membranes have good biocompatibility and can serve as barriers. However, they generally suffer from issues such as single structural design, weak mechanical properties, rapid degradation, poor antibacterial ability, and inadequate biological functions. In recent years, to overcome the various problems associated with existing commercial barrier membranes, researchers have optimized the components and controlled the structure of barrier membranes to develop multifunctional barrier membranes suitable for bone tissue regeneration. This review first outlines the common strategies for preparing GBR barrier membranes, their characteristics, and their classification. It also provides a detailed summary of the progress of research on new biomimetic barrier membranes as multifunctional platforms for repairing alveolar bone defects in biomedical engineering. Finally, it summarizes the challenges that multifunctional barrier membranes need to overcome and future development trends, laying a solid foundation for the research and clinical translation of GBR barrier membranes.
{"title":"Advances in biological barrier membranes for guided bone regeneration: Fabrication, characteristics, multifunctional optimization, and clinical prospects","authors":"Hongwei Pan , Yue Qu , Xueqin Hui , Haiquan Yue","doi":"10.1016/j.mtsust.2026.101303","DOIUrl":"10.1016/j.mtsust.2026.101303","url":null,"abstract":"<div><div>Alveolar bone defects with insufficient bone mass, caused by trauma, tumors, congenital disorders, and periodontal inflammation, severely hinder natural tooth preservation and dental implantation, a key challenge in modern oral medicine. Guided bone regeneration(GBR) using barrier membranes is an essential strategy and standard clinical procedure to improve the efficiency of alveolar bone tissue repair. Both non-absorbable and absorbable membranes have good biocompatibility and can serve as barriers. However, they generally suffer from issues such as single structural design, weak mechanical properties, rapid degradation, poor antibacterial ability, and inadequate biological functions. In recent years, to overcome the various problems associated with existing commercial barrier membranes, researchers have optimized the components and controlled the structure of barrier membranes to develop multifunctional barrier membranes suitable for bone tissue regeneration. This review first outlines the common strategies for preparing GBR barrier membranes, their characteristics, and their classification. It also provides a detailed summary of the progress of research on new biomimetic barrier membranes as multifunctional platforms for repairing alveolar bone defects in biomedical engineering. Finally, it summarizes the challenges that multifunctional barrier membranes need to overcome and future development trends, laying a solid foundation for the research and clinical translation of GBR barrier membranes.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101303"},"PeriodicalIF":7.9,"publicationDate":"2026-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022602","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}
Pub Date : 2026-01-10DOI: 10.1016/j.mtsust.2026.101300
Zuo Li , Mohamed N. Marei , Yushi Leng , Brian S. Haynes , Alejandro Montoya
This study investigates the oxidation of methane (CH4) on platinum (Pt) and palladium (Pd) ion-doped cerium dioxide (CeO2) catalysts through a multidisciplinary methodology that integrates continuous-flow experimental observations, density functional theory (DFT) modelling, and micro-kinetic analysis. Incorporating Pt or Pd in ionic form into the CeO2 reduces the CH4 oxidation by approximately 100∼150 K compared to undoped CeO2. Under fuel-lean conditions, the reaction kinetics are predominantly influenced by CH4 concentration, exhibiting first-order kinetics, while the dependence on O2 is zero-order. DFT calculations reveal that CH4 dehydrogenation proceeds via hydrogen extraction from surface lattice oxygen, with the doping species facilitating increased reactivity between carbon atoms and lattice oxygen, thus generating carbon monoxide (CO) and carbon dioxide (CO2). The energy profiles obtained from DFT indicate that the rate-limiting steps involve the initial dehydrogenation of CH4 and water formation through surface lattice oxygen extraction.
{"title":"Methane oxidation on ion-doped ceria catalysts","authors":"Zuo Li , Mohamed N. Marei , Yushi Leng , Brian S. Haynes , Alejandro Montoya","doi":"10.1016/j.mtsust.2026.101300","DOIUrl":"10.1016/j.mtsust.2026.101300","url":null,"abstract":"<div><div>This study investigates the oxidation of methane (CH<sub>4</sub>) on platinum (Pt) and palladium (Pd) ion-doped cerium dioxide (CeO<sub>2</sub>) catalysts through a multidisciplinary methodology that integrates continuous-flow experimental observations, density functional theory (DFT) modelling, and micro-kinetic analysis. Incorporating Pt or Pd in ionic form into the CeO<sub>2</sub> reduces the CH<sub>4</sub> oxidation by approximately 100∼150 K compared to undoped CeO<sub>2</sub>. Under fuel-lean conditions, the reaction kinetics are predominantly influenced by CH<sub>4</sub> concentration, exhibiting first-order kinetics, while the dependence on O<sub>2</sub> is zero-order. DFT calculations reveal that CH<sub>4</sub> dehydrogenation proceeds via hydrogen extraction from surface lattice oxygen, with the doping species facilitating increased reactivity between carbon atoms and lattice oxygen, thus generating carbon monoxide (CO) and carbon dioxide (CO<sub>2</sub>). The energy profiles obtained from DFT indicate that the rate-limiting steps involve the initial dehydrogenation of CH<sub>4</sub> and water formation through surface lattice oxygen extraction.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101300"},"PeriodicalIF":7.9,"publicationDate":"2026-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022702","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}
Pub Date : 2026-01-08DOI: 10.1016/j.mtsust.2025.101298
Chiemela Victor Amaechi , Salmia Binti Beddu , Idris Ahmed Ja'e , Abiodun Kolawole Oyetunji , Raqib Abu Salia , Obafemi M. Oyewole , Olalekan O. Ojedokun , Bo Huang
There are numerous environmental impacts associated with the construction industry because it consumes significant energy and other resources. The design and construction of civil structures such as residential buildings require several construction materials. This paper presents an overview of sustainable composite materials for construction projects such as buildings, factories, public structures and offshore structures. The construction materials that are used to produce structural elements, or build houses, as well as other structures include composites and conventional materials. New construction technologies using composite materials, have been developed in the construction sector to promote sustainability. The advantages of using composites as construction materials over traditional materials are highlighted in this paper. There are increasing implementation of composite materials on construction sites as they incorporate fewer materials, light-weight materials, newer designs and time-saving materials. Also, composite materials offer a promising option when it comes to architecture and sustainable construction, as they guarantee high performance. Thus, this paper provides an overview of composites as construction materials for the development of sustainable structures in the construction industry with some recommendations given. This review is to enhance policies for industry application of composites geared towards sustainability.
{"title":"An overview of composites as construction materials for the Development of sustainable structures","authors":"Chiemela Victor Amaechi , Salmia Binti Beddu , Idris Ahmed Ja'e , Abiodun Kolawole Oyetunji , Raqib Abu Salia , Obafemi M. Oyewole , Olalekan O. Ojedokun , Bo Huang","doi":"10.1016/j.mtsust.2025.101298","DOIUrl":"10.1016/j.mtsust.2025.101298","url":null,"abstract":"<div><div>There are numerous environmental impacts associated with the construction industry because it consumes significant energy and other resources. The design and construction of civil structures such as residential buildings require several construction materials. This paper presents an overview of sustainable composite materials for construction projects such as buildings, factories, public structures and offshore structures. The construction materials that are used to produce structural elements, or build houses, as well as other structures include composites and conventional materials. New construction technologies using composite materials, have been developed in the construction sector to promote sustainability. The advantages of using composites as construction materials over traditional materials are highlighted in this paper. There are increasing implementation of composite materials on construction sites as they incorporate fewer materials, light-weight materials, newer designs and time-saving materials. Also, composite materials offer a promising option when it comes to architecture and sustainable construction, as they guarantee high performance. Thus, this paper provides an overview of composites as construction materials for the development of sustainable structures in the construction industry with some recommendations given. This review is to enhance policies for industry application of composites geared towards sustainability.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101298"},"PeriodicalIF":7.9,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976908","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}
Pub Date : 2026-01-07DOI: 10.1016/j.mtsust.2026.101301
Zeinab M. Ahmed , Ahmed A. Allam , Mohamed I. El-Sayed , Zakaria Abdullah , Yasser Salama , Hassan A. Rudayni , Wail Al Zoubi , Mostafa R. Abukhadra
The persistence of endocrine-disrupting compounds (EDCs) such as bisphenol A (BPA) in aquatic environments necessitates the development of efficient, sustainable, and cost-effective treatment strategies. In this study, a multifunctional photocatalyst composed of nickel oxide (NiO), nickel hydroxide [Ni(OH)2], and metallic nickel (Ni0) supported on sulfonated carbon-rich bentonite (SB) was synthesized via a low-temperature, calcination-free route. The fabrication process—comprising acid activation, ion exchange, and mild chemical reduction—preserves hydroxide-layered structures while integrating redox-active and light-responsive phases within a hierarchically porous clay matrix. The resulting NiO/Ni(OH)2@SB composite demonstrated outstanding photocatalytic performance under visible light. Complete degradation and mineralization of BPA (5 mg/L) were achieved within 20 and 60 min, respectively using 0.5 g/L catalyst. Kinetic modeling confirmed pseudo-first-order behavior (k1 = 0.2177 min−1), while quantum yield analysis indicated high photon-to-reactivity efficiency (Φ = 3.32 × 10−7). Mechanistic studies revealed that photogenerated •OH and •O2− radicals—amplified by Ni2+/Ni3+ redox cycling and Ni0/NiO Schottky junctions—drive the oxidative degradation pathway. The sulfonated bentonite support enhances pollutant adsorption, interfacial contact, and dispersion of the active phases. The catalyst exhibited remarkable structural integrity and reusability, maintaining >90 % of its initial activity after six consecutive cycles, with negligible Ni leaching (<0.001 mg/L). This work offers a scalable and environmentally benign strategy for solar-assisted remediation of phenolic micropollutants. The design principles established herein provide a blueprint for developing next-generation clay-supported photocatalysts targeting a wide range of emerging contaminants in real-world wastewater matrices.
{"title":"Low-temperature synthesis of a multifunctional NiO/Ni(OH)2 decorated sulfonated bentonite for sustainable and enhanced visible-light-driven degradation and mineralization of bisphenol-A in water","authors":"Zeinab M. Ahmed , Ahmed A. Allam , Mohamed I. El-Sayed , Zakaria Abdullah , Yasser Salama , Hassan A. Rudayni , Wail Al Zoubi , Mostafa R. Abukhadra","doi":"10.1016/j.mtsust.2026.101301","DOIUrl":"10.1016/j.mtsust.2026.101301","url":null,"abstract":"<div><div>The persistence of endocrine-disrupting compounds (EDCs) such as bisphenol A (BPA) in aquatic environments necessitates the development of efficient, sustainable, and cost-effective treatment strategies. In this study, a multifunctional photocatalyst composed of nickel oxide (NiO), nickel hydroxide [Ni(OH)<sub>2</sub>], and metallic nickel (Ni<sup>0</sup>) supported on sulfonated carbon-rich bentonite (SB) was synthesized via a low-temperature, calcination-free route. The fabrication process—comprising acid activation, ion exchange, and mild chemical reduction—preserves hydroxide-layered structures while integrating redox-active and light-responsive phases within a hierarchically porous clay matrix. The resulting NiO/Ni(OH)<sub>2</sub>@SB composite demonstrated outstanding photocatalytic performance under visible light. Complete degradation and mineralization of BPA (5 mg/L) were achieved within 20 and 60 min, respectively using 0.5 g/L catalyst. Kinetic modeling confirmed pseudo-first-order behavior (k<sub>1</sub> = 0.2177 min<sup>−1</sup>), while quantum yield analysis indicated high photon-to-reactivity efficiency (Φ = 3.32 × 10<sup>−7</sup>). Mechanistic studies revealed that photogenerated •OH and •O<sub>2</sub><sup>−</sup> radicals—amplified by Ni<sup>2+</sup>/Ni<sup>3+</sup> redox cycling and Ni<sup>0</sup>/NiO Schottky junctions—drive the oxidative degradation pathway. The sulfonated bentonite support enhances pollutant adsorption, interfacial contact, and dispersion of the active phases. The catalyst exhibited remarkable structural integrity and reusability, maintaining >90 % of its initial activity after six consecutive cycles, with negligible Ni leaching (<0.001 mg/L). This work offers a scalable and environmentally benign strategy for solar-assisted remediation of phenolic micropollutants. The design principles established herein provide a blueprint for developing next-generation clay-supported photocatalysts targeting a wide range of emerging contaminants in real-world wastewater matrices.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101301"},"PeriodicalIF":7.9,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976911","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}
Pub Date : 2025-12-26DOI: 10.1016/j.mtsust.2025.101297
Omid Bamshad, Amir Mohammad Ramezanianpour
In the life cycle assessment (LCA) of concrete, it is essential to consider the service life, mechanical properties, and end-of-life scenarios to obtain accurate results, especially in the case of comparing geopolymer concretes with ordinary concrete. In this study, a conceptual framework was designed to produce circular concretes based on the main principals of circular economy. Then, a comparative economic and environmental life cycle assessment (LCA) was performed to evaluate the sustainability potential of circular geopolymer concrete (CGPC), geopolymer concrete (GPC), and circular ordinary concrete (COC), as alternatives to Portland cement concrete (PCC), using analytical hierarchy process (AHP). The results showed that using GPC and CGPC significantly alleviated the environmental impacts of cement production, such that they reduced the global warming potential (GWP) by about 69 %. The environmental burdens of CGPC were slightly higher than GPC in all midpoint (<5 %) and endpoint (<2 %) levels. The minimum life cycle cost was related to PCC, and then GPC, CGPC, and COC had higher life cycle costs than PCC with relative total cost of 1.08, 1.14, and 1.18, respectively. According to the multi-criteria decision making and final scores from AHP model, GPC and CGPC performed the best in the sustainability assessment, respectively, with a marginal difference, whereas COC performed the worst.
{"title":"Assessing the sustainability potential of circular geopolymer concrete: A life cycle assessment and multi-criteria decision making approach","authors":"Omid Bamshad, Amir Mohammad Ramezanianpour","doi":"10.1016/j.mtsust.2025.101297","DOIUrl":"10.1016/j.mtsust.2025.101297","url":null,"abstract":"<div><div>In the life cycle assessment (LCA) of concrete, it is essential to consider the service life, mechanical properties, and end-of-life scenarios to obtain accurate results, especially in the case of comparing geopolymer concretes with ordinary concrete. In this study, a conceptual framework was designed to produce circular concretes based on the main principals of circular economy. Then, a comparative economic and environmental life cycle assessment (LCA) was performed to evaluate the sustainability potential of circular geopolymer concrete (CGPC), geopolymer concrete (GPC), and circular ordinary concrete (COC), as alternatives to Portland cement concrete (PCC), using analytical hierarchy process (AHP). The results showed that using GPC and CGPC significantly alleviated the environmental impacts of cement production, such that they reduced the global warming potential (GWP) by about 69 %. The environmental burdens of CGPC were slightly higher than GPC in all midpoint (<5 %) and endpoint (<2 %) levels. The minimum life cycle cost was related to PCC, and then GPC, CGPC, and COC had higher life cycle costs than PCC with relative total cost of 1.08, 1.14, and 1.18, respectively. According to the multi-criteria decision making and final scores from AHP model, GPC and CGPC performed the best in the sustainability assessment, respectively, with a marginal difference, whereas COC performed the worst.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"33 ","pages":"Article 101297"},"PeriodicalIF":7.9,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925700","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}