Materials for Renewable and Sustainable Energy最新文献

{"title":"Enhancing mechanical properties and CO2 capture in mortar using calcium lime waste through dry pre-conditioning and accelerated CO2 curing","authors":"Adrina Rosseira A. Talip,&nbsp;Nur Hafizah A. Khalid,&nbsp;Moncef L. Nehdi,&nbsp;Iman Faridmehr,&nbsp;Abdul Rahman Mohd. Sam,&nbsp;Ghasan Fahim Huseien","doi":"10.1007/s40243-026-00356-8","DOIUrl":"10.1007/s40243-026-00356-8","url":null,"abstract":"<div><p>This research explores the efficacy of dry pre-conditioning treatment coupled with accelerated CO₂ curing for mortar incorporating unreactive Calcium Lime Waste (CLW), with a specific focus on enhancing mechanical properties and CO₂ capture. The investigation was initiated by characterizing the CLW material through various microstructural examinations and toxicity tests using the Toxicity Characteristic Leaching Procedure (TCLP). Different proportions of CLW (0–40%) were blended into Ordinary Portland Cement (OPC) mortar, and their performance was systematically compared with that of control samples. The assessment parameters encompassed physical properties (workability and density), mechanical properties (compressive strength), and CO₂ capturing properties (carbonation depth) over the initial 24 h, scrutinized under both atmospheric air and accelerated CO₂ carbonation curing conditions. Thermogravimetric analysis (TGA), X-ray diffraction, and Mercury Intrusion Porosimetry (MIP) tests were conducted on the identified optimum CLW mortar, which was cured under accelerated CO2 carbonation conditions. The results exhibited that CLW is extremely rich in calcium and demonstrates the behavior of Ca(OH)₂, making it an excellent material for capturing CO₂. Despite exhibiting higher porosity than cement mortars, the optimum CLW mortar combination met the standard’s strength requirements for non-loadbearing structural applications. Additionally, the Advanced Neural Networks (ANN) model was designed to predict mortar properties—namely, compressive strength and carbonation depth—by learning from input features, including cement content, CLW content, and curing conditions. It was revealed that an increase of 1% in cement content enhanced the compressive strength by approximately 0.2406 MPa, while curing conditions such as CO2 exposure and dry pre-conditioning significantly impacted the carbonation depth, with adjustments up to 2.7692 mm under specific conditions. By absorbing CO₂ and incorporating it into mortars, CLW enhances durability and strength, making it a key step toward developing sustainable materials.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00356-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of π-shaped thermoelectric generator using novel p-type ZrMnZ and n-type Bi2Te3/SiGe alloys for renewable and sustainable energy applications","authors":"K. Klinton Brito,&nbsp;B. Yashwanth,&nbsp;M. Srinivasan,&nbsp;J. Jai Muthukumaran","doi":"10.1007/s40243-025-00344-4","DOIUrl":"10.1007/s40243-025-00344-4","url":null,"abstract":"<div>\u0000 \u0000 <p>Energy emitted in the form of heat from various sources can be recovered and converted into usable electricity using thermoelectric generators (TEGs). In this study, the efficiency of a π-shaped thermoelectric module composed of p-type ZrMnZ (Z = In, Pb, Bi) legs and n-type Bi₂Te₃/SiGe alloys were investigated using MATLAB simulation software. The module efficiency was analyzed by varying the p-type legs (ZrMnIn, ZrMnPb, and ZrMnBi), n-type legs (Bi₂Te₃ and SiGe), and electrode materials (Al, Cu, and Ni), while keeping the ceramic plates (Al₂O₃) constant. The thermoelectric properties of the ZrMnZ alloys were evaluated using the WIEN2k code. Subsequently, the thermoelectric module was constructed, and its performance was simulated in MATLAB. The results reveal that the highest efficiency was achieved for the TEG comprising p-type ZrMnBi and n-type SiGe legs with Cu electrodes. Furthermore, it is observed that varying the leg height and incorporating suitable dopants can further enhance the device efficiency. Therefore, this study demonstrates that the half-Heusler alloys ZrMnIn, ZrMnPb, and ZrMnBi are promising candidates for efficient thermoelectric energy conversion applications.</p>\u0000 </div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00344-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A structural and compositional analysis of the customization of Ti3C2 MXenes for enhanced power storage","authors":"Walaa A. Hussein,&nbsp;P. Ragupathy,&nbsp;Raghupandiyan Naresh,&nbsp;V. Varshini,&nbsp;Ghalia A. Gaber","doi":"10.1007/s40243-025-00343-5","DOIUrl":"10.1007/s40243-025-00343-5","url":null,"abstract":"<div><p>Clay (c- Ti₃C₂), delaminated (d- Ti₃C₂), and silicon nanoparticle-incorporated (c- Ti₃C₂/Si and d- Ti₃C₂/Si) MXenes were synthesized, characterized, and electrochemically tested for potential energy storage uses. X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and Raman spectroscopy were used to characterize the materials. The successful synthesis was confirmed by XRD analysis, which showed that delamination and silicon addition caused noticeable structural changes. The clay, delaminated, and silicon-incorporated MXenes were compared in terms of morphology and composition using SEM/EDX spectra, demonstrating increased surface area and altered elemental distribution due to delamination and Si doping. Raman spectroscopy provided additional insights into vibrational modes and structural changes resulting from these treatments. Electrical performance was evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanic charge-discharge (GCD). The d-Ti₃C₂/Si nanocomposite showed the highest specific capacitance of 374.5 F g⁻¹ at 1 A g⁻¹, outperforming pristine c-Ti₃C₂ thanks to improved ion diffusion and electrolyte access. Its larger surface area and better ion transport pathways made d-Ti₃C₂ superior in specific capacitance and rate capability compared to c-Ti₃C₂. Additionally, the d-Ti₃C₂/Si electrode reached an energy density of 18.03 Wh kg⁻¹ at a power density of 3.61 W kg⁻¹, confirming its enhanced energy storage performance compared to pristine c-Ti₃C₂. The silicon incorporation significantly affected the electrochemical behavior, as the c-Ti₃C₂/Si and d-Ti₃C₂/Si electrodes displayed distinct charge storage mechanisms.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00343-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147440854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of transparent, dopant-free OPVA–GO nanocomposites with tunable proton conductivity and optical transparency for photonic and energy applications","authors":"Qana A. Alsulami,&nbsp;Khaled Charradi,&nbsp;Fatmah M. Alshareef,&nbsp;Sherif M. A. S. Keshk","doi":"10.1007/s40243-026-00353-x","DOIUrl":"10.1007/s40243-026-00353-x","url":null,"abstract":"<div><p>Polyvinyl alcohol (PVA) is valued for its transparency and film-forming ability, but its limited chemical reactivity and weak nanofiller interactions restrict functional tunability. Partially oxidized PVA (OPVA), enriched with ketone and hydroxyl groups, provides a versatile scaffold for nanocomposite design. Transparent OPVA–graphene oxide (GO) films were fabricated via dopant-free aqueous casting with low GO loadings (0.5–1.5 wt%). FTIR and XRD analyses confirmed hydrogen bonding interactions and disruption of lamellar crystallinity, enabling nanoscale dispersion. UV–Vis–NIR spectroscopy revealed high transmittance (&gt; 90%) and suppressed reflectance (~ 12%), while Tauc plots indicated a tunable bandgap (~ 2.0 eV) through GO-induced electronic coupling. Electrochemical impedance spectroscopy demonstrated humidity-responsive proton conductivity up to 6.0 × 10^− 3 S/cm at 90 °C under 100% relative humidity, achieved without sulfonation or external doping. Mechanical testing showed enhanced tensile strength and stiffness at 1.0 wt% GO, identified as the optimal loading, with incipient aggregation effects at higher concentrations. These synergistic trends establish a clear structure–property–performance relationship, positioning OPVA–GO nanocomposites as sustainable platforms for transparent photonic films, flexible optoelectronic devices, and renewable energy interfaces.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00353-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Materials and process engineering of antireflection coatings for enhancement of efficiency in silicon solar cells","authors":"Mridula Chandola,&nbsp;Aditi Jain,&nbsp;Mahesh Dhonde,&nbsp;Pandurengan Sakthivel,&nbsp;Kirti Sahu,&nbsp;Parasharam M. Shirage","doi":"10.1007/s40243-025-00351-5","DOIUrl":"10.1007/s40243-025-00351-5","url":null,"abstract":"<div><p>Polycrystalline silicon (poly-Si) solar cells remain the foundation of terrestrial photovoltaic energy production due to their cost effectiveness, mature manufacturing processes, and proven reliability. However, their outdoor power conversion efficiency is limited by significant optical reflection losses at the air–semiconductor interface, particularly under AM1.5 solar irradiance, which reduces light absorption and charge carrier generation. Antireflection coatings (ARCs) have emerged as an effective solution to mitigate these losses by enhancing light transmission into the active layer. This review evaluates a broad range of ARC materials including conventional options like SiNx, TiO₂, and MgF₂, as well as emerging zinc based, polymeric, and hybrid coatings and their impact on the optical and electrical performance of poly-Si solar cells. Emphasis is placed on optimizing refractive index, layer thickness, and spectral alignment with the AM1.5 spectrum to minimize reflectance. The influence of deposition techniques such as sputtering, physical vapor deposition (PVD), chemical vapor deposition (CVD), spin coating, dip coating, and sol–gel methods on coating quality, morphology, and interface passivation is also discussed. These factors directly affect key electrical parameters including short circuit current density (J_SC), open circuit voltage (V_OC), fill factor (FF), and overall efficiency (PCE). While theoretical studies on light interference and carrier dynamics were not covered, modelling efforts are included to analyze reflection, transmission, and resulting solar cell characteristics. Additionally, considerations such as long-term stability, thermal durability, environmental resistance, and material compatibility are highlighted as critical for practical deployment. Overall, this review offers a comprehensive perspective on the materials science, device engineering, and performance outcomes of ARCs for poly-Si solar cells, aiming to guide future research and industrial optimization toward high efficiency outdoor photovoltaics.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00351-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of high temperature pyrolysis effects on the performance of co-doped metal-organic framework with nitrogen-doped reduced graphene oxide for the oxygen reduction reaction","authors":"Hassan Shirzadi Jahromi,&nbsp;Shivi Saxena,&nbsp;Muralidhar K. Ghantasala,&nbsp;Ramakrishna Guda,&nbsp;Elena A. Rozhkova,&nbsp;Juan P. Vizuet,&nbsp;Ksenija D. Glusac,&nbsp;Zachary D. Hood,&nbsp;Shiba P. Adhikari,&nbsp;Bade Shrestha,&nbsp;Kamlesh Suthar","doi":"10.1007/s40243-025-00350-6","DOIUrl":"10.1007/s40243-025-00350-6","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, the electrochemical performance of nitrogen-doped reduced graphene oxide (N-rGO) combined with cobalt-doped MOF catalyst is investigated after annealing at different temperatures for application with proton-exchange membrane fuel cells (PEMFCs). The material was characterized using FTIR and Raman spectroscopy, XRD, SEM, XPS, and BET analysis to understand variations in its physical and chemical properties. Our results reveal the formation of the (100) cobalt-doped ZIF-8 phase, with a distinct crystalline-to-amorphous transition upon increasing the pyrolysis temperature to 900 °C, resulting in increased porosity and a fluffy microstructure. Linear sweep voltammetry studies reveal that incorporating the transition metal onto reduced graphene oxide (rGO) significantly enhances electrochemical performance compared to non-transition metal carbon-based catalysts. The optimized material composition exhibited comparable oxygen reduction reaction (ORR) performance to a commercially available 40 wt% Pt/C catalyst, achieving a potential of 0.495 V vs. RHE at -1 mA⋅cm^− 2 and similar cathodic currents. This improvement is attributed to the porous metal-organic framework (MOF) structure, which exposes numerous active cobalt and nitrogen sites on the surface, along with rGO, which enhances conductivity. dy underscores the role of nitrogen doping and pyrolysis in enhancing ORR activity, providing deeper insights into these electrocatalytic systems.</p>\u0000 </div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00350-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterogeneous CoO–Pd interface along with oxygen vacancies boosts the oxygen reduction reaction performance of Pd nanoparticles","authors":"Amisha Beniwal,&nbsp;Sajana Pooniya,&nbsp;V. R. Libin,&nbsp;Hariom Gurjar,&nbsp;Khushabu Shekhawat,&nbsp;Ashima Bagaria,&nbsp;Dinesh Bhalothia","doi":"10.1007/s40243-025-00352-4","DOIUrl":"10.1007/s40243-025-00352-4","url":null,"abstract":"<div><p>The rational design of low-Pd catalysts for the oxygen reduction reaction (ORR) remains a central challenge toward cost-effective fuel cell technologies. Here, we report a multiwalled carbon nanotubes supported binary CoPd catalyst with an ultralow Pd loading of only 5 wt% and abundant oxygen vacancies in CoO domains (denoted as CoPd-O^V). As prepared CoPd-O^V catalyst delivers an impressive half-wave potential (E_1/2) of 0.883 V versus RHE and a kinetic current density (J_K) of 12.35 mA cm⁻² in alkaline ORR (0.1 M KOH), significantly surpassing the benchmark J.M.-Pt/C catalyst wit 20 wt% Pt loading (E_1/2 = 0.844 V vs. RHE, J_k = 4.37 mA cm⁻²). In situ X-ray absorption spectroscopy (XAS) at the Co K-edge reveals that oxygen vacancies in CoO promote O₂ bond activation and splitting, while the neighboring Pd domains facilitate the subsequent hydration step through a strong electron relocation effect from Co-to-Pd. A control CoPd catalyst with similar Pd content but lacking oxygen vacancies shows markedly suppressed ORR activity, confirming the synergistic role of O^Vs and Pd. These findings establish a powerful strategy for engineering vacancy–metal interfaces, enabling high-performance ORR electrocatalysis at minimal noble metal cost.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00352-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of CeO2-doped graphene supported platinum catalysts for enhanced methanol oxidation and oxygen reduction reactions","authors":"Ying Li,&nbsp;Min Cong Wu,&nbsp;Xin Zhang","doi":"10.1007/s40243-025-00349-z","DOIUrl":"10.1007/s40243-025-00349-z","url":null,"abstract":"<div><p>This study presents a systematic investigation of CeO₂-doped reduced graphene oxide (RGO) as a support for platinum catalysts in direct methanol fuel cells. CeO₂/RGO composites with loadings of 3–10 wt% CeO₂ were synthesized via controlled precipitation and thermal reduction, followed by the deposition of Pt nanoparticles using ascorbic acid as a reducing agent. Physical characterization by XRD, TEM, and XPS confirmed the uniform dispersion of Pt nanoparticles (3–4 nm) and revealed chemical interactions between Pt and CeO₂. Electrochemical testing demonstrated that the catalyst with 5% CeO₂ doping exhibited optimal performance: A methanol oxidation current of 959 mA/mgPt, which is four times higher than that of the undoped Pt/RGO benchmark. An electrochemical surface area (ECSA) of 87.1 m²/g. Enhanced CO tolerance, as indicated by an If/Ib ratio of 1.24. The enhanced catalytic activity is attributed to the oxygen storage capacity of CeO₂ and synergistic interfacial effects between Pt and CeO₂, which were evidenced by a positive shift in the Pt4f binding energy observed in XPS analysis. This work demonstrates a cost-effective strategy for improving Pt utilization in fuel cell anodes through doping with rare earth oxides.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00349-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147440826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical and structural characterization of recast aquivion® EW720 polymer electrolyte membranes for proton exchange membrane fuel cell (PEMFC) applications","authors":"A. Saccà,&nbsp;V. Baglio,&nbsp;B. Paci,&nbsp;A. Generosi,&nbsp;F. Righi Riva,&nbsp;I. Gatto","doi":"10.1007/s40243-025-00346-2","DOIUrl":"10.1007/s40243-025-00346-2","url":null,"abstract":"<div><p>Polymer electrolyte membranes based on Aquivion^® polymer dispersion (D72-25BS), produced by Syensqo, were prepared using a standardized in-house Doctor-Blade casting technique for application in H₂/air PEM fuel cells (PEMFCs). The study aimed to identify the optimal preparation method for low-equivalent-weight (EW = 720 g/eq) Aquivion^®, a copolymer of TetraFluoroEthylene (TFE) and Sulfonyl Fluoride Vinyl Ether (SFVE), known as Short-Side-Chain (SSC) ionomer. SSC ionomers offer higher ion-exchange capacity (IEC) and proton conductivity compared to Long-Side-Chain (LSC) perfluorosulphonic counterparts. Comprehensive characterization was performed using in-situ X-ray Diffraction (XRD), micro-Raman spectroscopy, water retention, IEC, Dynamic-Mechanical Analysis (DMA), proton conductivity and electrochemical tests to assess the influence of casting methods and post-casting treatments. Two recast Aquivion^® membranes were developed and compared to a pilot-scale e-PTFE reinforced Aquivion^® membrane supplied by Syensqo. The recast Aqu10 membrane, thermally-treated at 155 °C and subsequently acid-treated, showed an excellent proton conductivity of about 0.073 S/cm under harsh conditions (110 °C; 50%RH) outperforming both the e-PTFE-reinforced reference membrane and the Aqu1 membrane, which was thermally treated at a higher temperature (190 °C). Moreover, the recast Aqu10 membrane achieved a power density of 0.67 W/cm² (@0.6 V) compared to 0.43 W/cm² (@0.6 V) under PEMFC operating drastic conditions (95 °C; 50%RH) confirming the effectiveness of the selected preparation method and making this membrane a promising prototype for PEMFC applications.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00346-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coffee extract and pomegranate juice: sustainable green media for gold catalyst synthesis and their performance evaluation as anodes in blood paper-based microfluidic fuel cells","authors":"U. Mariscal-Pedraza,&nbsp;A. Dector-Espinoza,&nbsp;J. C. Martínez-Espinosa,&nbsp;J. M. Olivares-Ramírez,&nbsp;R. Carrera-Cerritos","doi":"10.1007/s40243-025-00345-3","DOIUrl":"10.1007/s40243-025-00345-3","url":null,"abstract":"<div><p>This study presents the green synthesis of suspended gold nanoparticles utilizing pomegranate juice and coffee extract, followed by the preparation of catalysts consisting of gold nanoparticles supported on vulcanized carbon (Au/XC72R). These catalysts were evaluated as anodes in paper-based microfluidic fuel cells fueled by glucose and human blood. Material characterization was performed using Transmission Electron Microscopy (TEM) and X-ray Diffraction (XRD). The anode performance was assessed through measurements of maximum current density (MCD), open-circuit potential (OCP), and maximum power density (MPD). Additionally, the effect of heat treatment on cell performance was examined. Statistical analysis showed that, in the synthesis using coffee extract, temperature was the only significant factor affecting nanoparticle size, while synthesis time was the main factor for the pomegranate juice synthesis. The untreated Au/XC72R catalysts synthesized from both extracts exhibited superior electrocatalytic performance in microfluidic fuel cells operated with glucose and human blood. The highest OCP, MPD, and MCD values for the untreated catalysts were obtained with a 10 mM glucose solution. This was attributed to the presence of fine surface protrusions on the gold nanoparticles, which were partially lost upon heating and the increment of particle size. Overall, the results demonstrated that the green synthesis route employing pomegranate juice and coffee extract is effective and has potential for further optimization.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00345-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}