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Waste plastic bottles an alternate material for synthesis of metal organic frameworks (MOFs) with potential applications 废塑料瓶是合成具有潜在应用价值的金属有机框架(MOFs)的替代材料
Next Sustainability Pub Date : 2024-09-02 DOI: 10.1016/j.nxsust.2024.100068
Jasleen Kaur , Jonty Kathuria , J. Nagendra Babu , Meenu Arora
{"title":"Waste plastic bottles an alternate material for synthesis of metal organic frameworks (MOFs) with potential applications","authors":"Jasleen Kaur ,&nbsp;Jonty Kathuria ,&nbsp;J. Nagendra Babu ,&nbsp;Meenu Arora","doi":"10.1016/j.nxsust.2024.100068","DOIUrl":"10.1016/j.nxsust.2024.100068","url":null,"abstract":"<div><p>Polyethylene terephthalate (PET) waste, especially originating from post-consumer bottles, represents a significant environmental hazard owing to its widespread utilization and inadequate biodegradability. Addressing the growing environmental issues associated with plastic waste, the development of sustainable strategies for recycling and utilization is of paramount importance. This study explores the potential of employing waste plastic bottles, specifically PET, as a precursor in the synthesis of Metal-Organic Frameworks (MOFs). The synthesis procedure encompasses the depolymerization of PET to yield terephthalic acid, serving as an organic linker in the formation of MOFs. An analysis of the potential applications of PET-derived MOFs, including catalysis, adsorption, and gas separation, is conducted. The review also highlights prospects and challenges within the field, underscoring the necessity for further refinement, scalability, and commercialization of PET-sourced MOFs. The overarching aim is to foster the advancement of ecologically responsible methods for waste plastic management and the creation of valuable materials through MOF synthesis.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100068"},"PeriodicalIF":0.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982362400045X/pdfft?md5=4a89528188ee7a644d1173c1f861476b&pid=1-s2.0-S294982362400045X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142129793","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}
引用次数: 0
Core-shell V2O5- Gum ghatti grafted poly (acrylamide-co-methacrylic acid) adsorbent for the removal of methylene blue dye in water: Kinetic, equilibrium and thermodynamic studies 用于去除水中亚甲基蓝染料的核壳 V2O5- Gum ghatti 接枝聚(丙烯酰胺-共甲基丙烯酸)吸附剂:动力学、平衡和热力学研究
Next Sustainability Pub Date : 2024-09-02 DOI: 10.1016/j.nxsust.2024.100069
Eric Selorm Agorku , Ahmed Kangmennaa , Bernice Yram Danu , Francis Kofi Ampong , Ray Bright Voegborlo
{"title":"Core-shell V2O5- Gum ghatti grafted poly (acrylamide-co-methacrylic acid) adsorbent for the removal of methylene blue dye in water: Kinetic, equilibrium and thermodynamic studies","authors":"Eric Selorm Agorku ,&nbsp;Ahmed Kangmennaa ,&nbsp;Bernice Yram Danu ,&nbsp;Francis Kofi Ampong ,&nbsp;Ray Bright Voegborlo","doi":"10.1016/j.nxsust.2024.100069","DOIUrl":"10.1016/j.nxsust.2024.100069","url":null,"abstract":"<div><p>Herein, vanadium pentoxide (V<sub>2</sub>O<sub>5</sub>) encapsulated <em>Gum ghatti</em> grafted poly(acrylamide-co- methacrylic acid) adsorbent was synthesized to remove methylene blue dye from water. The materials were characterized by FTIR, TEM, SEM, Raman and XRD analysis. Batch adsorption studies were performed on the materials. Several variables' effects on methylene blue removal, including pH, contact time, initial dye concentration, and adsorbent dosage, were examined. Kinetics and thermodynamic analysis were also carried out for the adsorbent-adsorbate interaction to determine the maximum adsorption and mechanism for adsorption. By using UV-Vis spectrophotometric analysis, the dye concentration was evaluated both before and after adsorption. Langmuir, Freundlich, and Dubini-Radushkevic's isotherm models were used to analyze the adsorption data. Results showed a maximum adsorption efficiency of 92 % at a pH of 9 and 0.2 g as the maximum adsorbent dosage. The study followed the Langmuir isotherm model with a correlation coefficient (R<sup>2</sup>) of 0.9995. The results from the kinetic studies show a pseudo-second-order mechanism. The negative values of the Gibbs free energy change ΔG° ranging from −10.57 KJmol<sup>−1</sup> to −9.64 Kmol<sup>−1</sup> within the temperatures of 298 K to 313 K is an indication of a spontaneous process. A negative enthalpy change (ΔH° = −29.05 KJmol<sup>−1</sup>) shows an exothermic process and a negative entropy change (ΔS° = −0.06 KJmol<sup>−1</sup>) represents a highly ordered system. ANOVA in Microsoft Excel and other statistical analyses were used to evaluate the effects of time, pH, concentration, dose, temperature, and other factors on the effectiveness of dye adsorption. Importantly, every parameter that was investigated showed statistically significant impacts on the removal of dye (p &lt; 0.05), revealing their important impact on the adsorption process.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100069"},"PeriodicalIF":0.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000461/pdfft?md5=efc5159da171a9db1c72ff431c60766e&pid=1-s2.0-S2949823624000461-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142122339","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}
引用次数: 0
Ecological mortars produced from sustainable hydrated lime obtained from biomass ash 用从生物质灰烬中提取的可持续熟石灰生产生态灰泥
Next Sustainability Pub Date : 2024-08-15 DOI: 10.1016/j.nxsust.2024.100067
J.F.V. Marinho , H.C.B. Nascimento , A.C.V. Nóbrega , E.P. Marinho , N.B.D. Lima
{"title":"Ecological mortars produced from sustainable hydrated lime obtained from biomass ash","authors":"J.F.V. Marinho ,&nbsp;H.C.B. Nascimento ,&nbsp;A.C.V. Nóbrega ,&nbsp;E.P. Marinho ,&nbsp;N.B.D. Lima","doi":"10.1016/j.nxsust.2024.100067","DOIUrl":"10.1016/j.nxsust.2024.100067","url":null,"abstract":"<div><p>Sustainable hydrated lime is produced from biomass ash rich in calcium carbonate, with properties similar to industrial hydrated lime. However, there is a lack of current and relevant research on sustainability related to the use of alternative limestone, derived from waste such as biomass ash. In this sense, the present research aims to study the behavior of cementitious coating mortars with partial and total replacement of industrial hydrated lime by sustainable hydrated lime, through microstructural, macrostructural, physical and chemical tests. Microstructural analyses performed by SEM demonstrated the presence of cement hydration products (CSH and ettringite) in all mortars evaluated. Chemical analyses through XRF and XRD showed similarity in chemical composition and crystallographic phases between the mortar with industrial hydrated lime and the ecological mortars. The FTIR showed chemical bonds characteristic of cement mortars in all ecological mortars, ratified by TG/DTG, which shows the decomposition of products such as CSH, ettringite, portlandite and calcite in all ecological mortars. Through the results found, the viability of replacing sustainable hydrated lime with industrial hydrated lime in the preparation of ecological mortars stands out, at the optimum percentage of 50 %, with possible total replacement (100 %) without significant losses in resistance.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100067"},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000448/pdfft?md5=2941d0538707ffd5372aecfa768faedd&pid=1-s2.0-S2949823624000448-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141990886","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}
引用次数: 0
Tailoring tungsten trioxide (WO3): pH-dependent synthesis, structural insights, and exceptional electrochromic performance 定制三氧化钨 (WO3):取决于 pH 值的合成、结构洞察力和卓越的电致变色性能
Next Sustainability Pub Date : 2024-08-08 DOI: 10.1016/j.nxsust.2024.100065
Ayesha Khan, Suchitra N. Sapakal, Anamika Kadam
{"title":"Tailoring tungsten trioxide (WO3): pH-dependent synthesis, structural insights, and exceptional electrochromic performance","authors":"Ayesha Khan,&nbsp;Suchitra N. Sapakal,&nbsp;Anamika Kadam","doi":"10.1016/j.nxsust.2024.100065","DOIUrl":"10.1016/j.nxsust.2024.100065","url":null,"abstract":"<div><p>In the current investigation, WO<sub>3</sub> thin films are prepared via simple hydrothermal method at different pH values (1, 7 and 11). In this study, XRD, SEM, FTIR, UV–visible, and electrochemical techniques were used to study pH effects on the preparation of WO<sub>3</sub> and their structural, morphological, and electrochromic variations. The XRD analysis revealed that the pH of the precursor solution significantly influences crystallinity, with acidic conditions favouring high crystallinity and efficient electrochromic (EC) performance, while more alkaline conditions result in reduced crystallinity and amorphous film formation. The SEM analysis demonstrates that pH significantly influences the morphology of WO<sub>3</sub> films. FTIR spectroscopy exhibited characteristic peaks associated with WO<sub>3</sub>, affirming the successful synthesis of WO<sub>3</sub> thin films. The electrochemical investigations demonstrated that WO<sub>3</sub> films prepared at a pH of 1 exhibited exceptional EC activity, characterized by the highest optical modulation density of 0.3 and a colouration efficiency (CE) of approximately 122.2 cm<sup>2</sup>/C at 633 nm. These findings underscore the promising potential of pH-controlled hydrothermal method for tailoring the electrochromic behavior of WO<sub>3</sub> thin films, with implications in energy efficient smart windows.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100065"},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000424/pdfft?md5=29d7d01ba6611fc466dbec3afd6b77c5&pid=1-s2.0-S2949823624000424-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141952213","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}
引用次数: 0
A la carte dissolution of rare earth elements from lateritic and karstic bauxite residues at mild pH: Toward sustainable extraction processes 红土和喀斯特铝土矿残渣中稀土元素在温和 pH 值条件下的自选溶解:实现可持续萃取工艺
Next Sustainability Pub Date : 2024-08-08 DOI: 10.1016/j.nxsust.2024.100066
Pierre Tamba Oularé , Julien Couturier , Blanche Collin , Emmanuel Assidjo , Laila Rhazi , Léa Causse , Sofiane Zitoune , Sékou Traoré , Kouakou Alphonse Yao , Clément Levard
{"title":"A la carte dissolution of rare earth elements from lateritic and karstic bauxite residues at mild pH: Toward sustainable extraction processes","authors":"Pierre Tamba Oularé ,&nbsp;Julien Couturier ,&nbsp;Blanche Collin ,&nbsp;Emmanuel Assidjo ,&nbsp;Laila Rhazi ,&nbsp;Léa Causse ,&nbsp;Sofiane Zitoune ,&nbsp;Sékou Traoré ,&nbsp;Kouakou Alphonse Yao ,&nbsp;Clément Levard","doi":"10.1016/j.nxsust.2024.100066","DOIUrl":"10.1016/j.nxsust.2024.100066","url":null,"abstract":"<div><p>Recovery of rare earth elements from bauxite residues of lateritic versus karstic origin was explored at a pH ranging between 2.7 and 4.5 using a mixture of citric acid and citrate in water. Dissolution yields of up to 82 % for lanthanum and 62 % for yttrium were achieved with excellent selectivity toward iron (a selectivity factor of up to 4200), the main element of bauxite residues. An experimental Box-Behnken statistical design identified the concentration of citric acid/citrate and temperature as key factors controlling the dissolution yield and selectivity of rare earth elements. Observed differences in dissolution yields and selectivity as a function of origin were attributed to differences in the speciation of rare earth elements in the two bauxite residues. It is therefore possible to draw an “à la carte” graph that identified the optimum citric acid/citrate concentrations and dissolution temperatures for dissolution yields and selectivity for the two BRs. This work provides fundamental knowledge for the future development of sustainable processes for the recovery of rare earth elements from bauxite residues derived from bauxites of different origin.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100066"},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000436/pdfft?md5=bdcd44e6a0d8fe9297cbb934c0269d23&pid=1-s2.0-S2949823624000436-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963552","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}
引用次数: 0
Carbonization of golden shower pods to high surface area biochar for decontamination of cationic dyes and regeneration study by gamma radiations 通过碳化金色淋浴豆荚制备高比表面积生物炭,用于阳离子染料的净化和伽马射线再生研究
Next Sustainability Pub Date : 2024-08-07 DOI: 10.1016/j.nxsust.2024.100064
Apurva Bambal , Ravin Jugade , Maithili Khapre , D. Saravanan
{"title":"Carbonization of golden shower pods to high surface area biochar for decontamination of cationic dyes and regeneration study by gamma radiations","authors":"Apurva Bambal ,&nbsp;Ravin Jugade ,&nbsp;Maithili Khapre ,&nbsp;D. Saravanan","doi":"10.1016/j.nxsust.2024.100064","DOIUrl":"10.1016/j.nxsust.2024.100064","url":null,"abstract":"<div><p>Detoxification of water resources is the need of the hour and a number of environment friendly materials are proposed by scientist to deal with water pollution issues. The present study deals with preparation and characterization of porous activated carbon from golden shower pods, a waste ligno-cellulosic biomass, for the removal of dye contaminants from aqueous solution. The synthesized material, golden shower biochar (GSBC) was characterized using various analytical techniques to confirm the presence of active sites. The BET analysis of GSBC revealed high surface area of 1120 m<sup>2</sup>/g with total pore volume of 1.099 cm<sup>3</sup>/g and average pore radius 19.618 Å. Operational parameters were optimized using batch studies by taking GSBC dose of 50 mg which showed complete removal of target dyes with an initial dye concentration of 200 mg/L with just 60 min interaction time; based on these results, a fixed bed column of GSBC was designed and column studies were performed. Adsorption isotherm studies were carried out using Langmuir and Freundlich models, of which Langmuir model was found to be best-fit with maximum adsorption capacities of 208.86 mg/g, 284.35 mg/g and 327.56 mg/g for Crystal violet, Brilliant green and Methylene blue dyes respectively. Analysis of kinetics and thermodynamics revealed that the best-fit model was pseudo second-order with spontaneous reaction course and exothermic nature. Regeneration was carried out using gamma irradiation of dye loaded GSBC, followed by leaching in alcohol. It was observed that a 30 KGy dose was just sufficient to completely degrade the dye on the adsorbent surface. GSBC has shown immense potential for eradication of dyes from water effluents and it is easily recovered with negligible loss in efficacy.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100064"},"PeriodicalIF":0.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000412/pdfft?md5=8a9fd733c4d0ddb8a2721c560f2f7b7f&pid=1-s2.0-S2949823624000412-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950674","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}
引用次数: 0
Impact of shading heaviness on voltage, current and power of the solar photovoltaic string 遮阳程度对太阳能光伏组串的电压、电流和功率的影响
Next Sustainability Pub Date : 2024-08-07 DOI: 10.1016/j.nxsust.2024.100062
Sameera , Mohd Tariq , Mohd Rihan
{"title":"Impact of shading heaviness on voltage, current and power of the solar photovoltaic string","authors":"Sameera ,&nbsp;Mohd Tariq ,&nbsp;Mohd Rihan","doi":"10.1016/j.nxsust.2024.100062","DOIUrl":"10.1016/j.nxsust.2024.100062","url":null,"abstract":"<div><p>The short-term power output variability of solar photovoltaic (PV) systems caused by passing clouds is becoming a major concern for grid operators. As the penetration of utility-scale PV systems boosts, the rapid power fluctuations greatly challenge the grid's transient stability. A photo voltaic system is greatly vulnerable to Partial Shading. The performance analysis of PV systems clearly suggests that the maximum power of partially shaded PV systems is inversely proportional to the heaviness of shading. However, some literatures are not of the same opinion; for them, the maximum power of a partially shaded system is invulnerable to shading heaviness, often at certain critical points. According to research on the P-V characteristic curve under various numbers of shaded modules and shading levels, the irradiance of the shaded modules reaches a certain turning point or critical point. The PV array becomes insensitive to high-level shading, categorically for the series topology. This paper presents an experimental results of performance parameters with varying shading heaviness. The experiment is performed on a Photovoltaics string of series connected modules, a 119KW grid-connected rooftop solar power plant using the Power Quality analyser for continuous recording of various parameters under changing shading heaviness. The degree or heaviness of shading decides the critical point. The critical point can vary based on the number of the shaded modules.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100062"},"PeriodicalIF":0.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000394/pdfft?md5=95119dd297c9d89bbb9ce28827a458eb&pid=1-s2.0-S2949823624000394-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950672","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}
引用次数: 0
Thermodynamic analysis of MnWO4 as an oxygen carrier in a chemical looping scheme for hydrogen production 化学循环制氢方案中作为氧载体的 MnWO4 的热力学分析
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100033
Juliana López van der Horst , Francisco Pompeo
{"title":"Thermodynamic analysis of MnWO4 as an oxygen carrier in a chemical looping scheme for hydrogen production","authors":"Juliana López van der Horst ,&nbsp;Francisco Pompeo","doi":"10.1016/j.nxsust.2024.100033","DOIUrl":"https://doi.org/10.1016/j.nxsust.2024.100033","url":null,"abstract":"<div><p>In the last few years, hydrogen has attracted much attention because of its importance in the transition to a sustainable energy system and its use as a raw material in many industrial processes. In this context, chemical looping is proposed as an alternative to traditional methane reforming processes, where methane is partially oxidized by the lattice oxygen of a solid oxygen carrier instead of using water or pure oxygen. This work presents a thermodynamic analysis of MnWO<sub>4</sub> as an oxygen carrier and the compositions at equilibrium were calculated by minimizing the total Gibbs free energy of the system. To evaluate its possible integration into a chemical looping scheme, this study assesses the optimal reaction temperature and reactant molar ratio to attain high hydrogen yield while avoiding carbon formation. The findings suggest that temperatures exceeding 775°C and ratios above stoichiometry are necessary. For successful regeneration, air or water can be used. In the former case a stoichiometric ratio of 1.5:1 of O<sub>2</sub> to MnO/W is required, while for the latter, an excess of water in necessary.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"3 ","pages":"Article 100033"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000102/pdfft?md5=04ed14eccd31ee8a113e118146ea787d&pid=1-s2.0-S2949823624000102-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140295866","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}
引用次数: 0
Facile and affordable synthesis of sulfonated and phosphonated poly (p-terphenyl perfluorophenyl)s for proton exchange membrane fuel cells 用于质子交换膜燃料电池的磺化和膦化聚(对三联苯全氟苯基)的简便而经济的合成方法
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2023.100021
Tao Wei , Yun Zhao , Zhiwei Ren , Yangkai Han , Haitao Zhang , Zhigang Shao
{"title":"Facile and affordable synthesis of sulfonated and phosphonated poly (p-terphenyl perfluorophenyl)s for proton exchange membrane fuel cells","authors":"Tao Wei ,&nbsp;Yun Zhao ,&nbsp;Zhiwei Ren ,&nbsp;Yangkai Han ,&nbsp;Haitao Zhang ,&nbsp;Zhigang Shao","doi":"10.1016/j.nxsust.2023.100021","DOIUrl":"https://doi.org/10.1016/j.nxsust.2023.100021","url":null,"abstract":"<div><p>Hydrocarbon proton exchange membranes (PEMs) which exhibit low-cost, improved robustness, and simple synthesis relative to perfluorosulfonic acid (PFSA) membranes, are of great significance for proton exchange membrane fuel cells (PEMFCs). Herein, we report a facile and affordable preparation of sulfonated and phosphonated poly (p-terphenyl perfluorophenyl)s PEMs via superacid-catalyzed Friedel−Crafts condensation of p-terphenyl and pentafluorobenzaldehyde monomers, following by highly selective para-substitution of fluorobenzene to graft ion exchange groups. The rigid and well-defined polymer structure with precisely controlled anionic groups, enables good phase separation and efficient ionic clustering to promote proton transport. Sulfonated and phosphonated PEMs show modest proton conductivities of 150 and 120 mS cm<sup>−1</sup> at 90 °C, and achieve H<sub>2</sub>/air PEMFC peak power densities of 360 and 237 mW cm<sup>−2</sup> at 80 ℃, respectively. Interestingly, we find that phosphonated PEMs have significantly higher resistance to free radicals than sulfonated PEMs. Overall, the results suggest that our prepared hydrocarbon PEMs have potential applications for fuel cells.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"3 ","pages":"Article 100021"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823623000211/pdfft?md5=a90f11b17a2344b8233389483480b24e&pid=1-s2.0-S2949823623000211-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139435829","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}
引用次数: 0
Mechanical properties and applications of a fiber reinforced biofoam from Amazonian palm leaves 亚马逊棕榈叶纤维增强生物泡沫的机械特性与应用
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100063
Bruno Monteiro Balboni , Thiago Augusto de Sousa Moreira , Alessandra Silva Batista , José Nivaldo Garcia , Marcelo Leite Ribeiro , C. Brand Wessels , Luciana Rodrigues
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