Next Sustainability最新文献

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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":null,"pages":null},"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":null,"pages":null},"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
Recent progress on cathode materials for protonic ceramic fuel cells 质子陶瓷燃料电池阴极材料的最新进展
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100028
Wenwen Zhang, Xiaomin Zhang, Yuefeng Song, Guoxiong Wang
{"title":"Recent progress on cathode materials for protonic ceramic fuel cells","authors":"Wenwen Zhang,&nbsp;Xiaomin Zhang,&nbsp;Yuefeng Song,&nbsp;Guoxiong Wang","doi":"10.1016/j.nxsust.2024.100028","DOIUrl":"https://doi.org/10.1016/j.nxsust.2024.100028","url":null,"abstract":"<div><p>Protonic ceramic fuel cells (PCFCs) have recently garnered significant interest due to their high efficiency and low emissions operating in the intermediate temperature range (400−700 °C). However, due to the lack of efficient key cell materials, especially cathode materials with triple-conducting (O<sup>2−</sup>/H<sup>+</sup>/e<sup>−</sup>) characteristics, the practical application of PCFCs lags behind other energy conversion technologies. Over the past decade, considerable efforts have been devoted to the development of efficient triple-conducting cathode materials, leading to a remarkable progress in PCFCs performance. This review provides a comprehensive summary of the development of cathode materials in PCFCs, including the reaction mechanism, essential cathode material features, regulation strategies, and recent advancements. Challenges and research perspectives in this field are also presented. The focus is on harnessing the fundamental principles of compositional engineering and advanced technologies to provide valuable guidance for the design and development of novel cathode materials for high-performance PCFCs and related fields.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000059/pdfft?md5=f6d4269d1c74aab91552f029e4a6a7a3&pid=1-s2.0-S2949823624000059-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139731856","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 concrete structures durability on its sustainability and climate resiliency 混凝土结构耐久性对其可持续性和气候适应性的影响
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100025
Adeyemi Adesina , Jieying Zhang
{"title":"Impact of concrete structures durability on its sustainability and climate resiliency","authors":"Adeyemi Adesina ,&nbsp;Jieying Zhang","doi":"10.1016/j.nxsust.2024.100025","DOIUrl":"https://doi.org/10.1016/j.nxsust.2024.100025","url":null,"abstract":"<div><p>Durability property is a critical performance indicator of concrete in different environments and locations. However, durability also plays a key role in the sustainability and climate resiliency of concrete structures which is mostly ignored in the context of ways to improve the sustainability of concrete materials and structures. Hence, this paper aims to bring focus to this area by presenting an overview of the critical role of concrete properties especially durability on the sustainability and climate resiliency of concrete structures. This paper first presents a general overview of concrete materials followed by the connection of concrete to sustainability and climate resiliency. Discussions from this paper indicate that to improve concrete sustainability, there is a need to use materials with lower environmental impacts upfront in addition to producing concrete with improved durability to ensure long-term performance. In other words, merely reducing the upfront embodied carbon of materials is not sufficient to achieve sustainable concrete if the impact of such alternative low-carbon materials used to replace the traditional materials in concrete is not considered. On the other hand, the climate resiliency of concrete structures is mostly dependent on improved durability which would sustain their adaptation over time to the impacts of the changing climate conditions. Overall, to achieve sustainability and climate resilience of concrete structures; lower environmental impact, higher durability performance and resilience to applicable climatic conditions must be achieved.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000023/pdfft?md5=1a8a0f2cae4a59e456a3c01c34257df6&pid=1-s2.0-S2949823624000023-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342262","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
{"title":"Mechanical properties and applications of a fiber reinforced biofoam from Amazonian palm leaves","authors":"","doi":"10.1016/j.nxsust.2024.100063","DOIUrl":"10.1016/j.nxsust.2024.100063","url":null,"abstract":"<div><p><em>Miriti</em>, derived from the leaves of the Amazon palm tree <em>Mauritia flexuosa</em>, is a foam-like material that can serve as a natural substitute for synthetic foams, offering the advantage of natural internal fiber reinforcement. This study assessed <em>miriti</em>’s mechanical properties and potential applications. With an average specific mass of 63 kg.m<sup>–3</sup>, <em>miriti</em> is amongst the lightest natural solid materials. Its internal fiber reinforcement provides mechanical properties seven to 30 times higher than synthetic foams of similar density in the parallel-to-grain direction. <em>Miriti</em> is a green material and shows high potential for use in sandwich panel cores, thermal/acoustic applications requiring higher strength and stiffness, and load-bearing walls of small structures. Sustainable management of <em>M. flexuosa</em> by local communities is feasible, promoting their sustainable development. Additionally, <em>miriti</em> can inspire the design of synthetic foams reinforced with internal fibers.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000400/pdfft?md5=3c71096837d252455bcdc243b78ecb72&pid=1-s2.0-S2949823624000400-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729424","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
Spontaneous formation, gene regulation of Trichoderma and slow decomposition in cocopeat 椰糠中毛霉的自发形成、基因调控和缓慢分解
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100051
Avinash Sharma , Mainu Hazarika , Punabati Heisnam , Himanshu Pandey , V.S. Devadas , Praveen Kumar , Devendra Singh , Amit Vashishth , Monoj Sutradhar , Rani Jha
{"title":"Spontaneous formation, gene regulation of Trichoderma and slow decomposition in cocopeat","authors":"Avinash Sharma ,&nbsp;Mainu Hazarika ,&nbsp;Punabati Heisnam ,&nbsp;Himanshu Pandey ,&nbsp;V.S. Devadas ,&nbsp;Praveen Kumar ,&nbsp;Devendra Singh ,&nbsp;Amit Vashishth ,&nbsp;Monoj Sutradhar ,&nbsp;Rani Jha","doi":"10.1016/j.nxsust.2024.100051","DOIUrl":"https://doi.org/10.1016/j.nxsust.2024.100051","url":null,"abstract":"<div><p>Cocopeat has various distinguishing properties that encourage the slow decomposition and spontaneous <em>Trichoderma</em> growth. The cocopeat synthesizes responsive chemicals and regulatory mechanisms which assist in the <em>Trichoderma</em> growth. The exact chemical stimulant and efficient mechanisms governing the spontaneous <em>Trichoderma</em> growth in cocopeat remain unknown. The high lignin and cellulose concentration produces actinomycetes and deuteromycetes, which trigger slow decomposition in cocopeat. The chemical components, temperature, pH, nutrients, and aeration all have a direct impact <em>Trichoderma</em> growth and slow decomposition. The chemical constituents lignin, suberin, cutin, pectin, cellulose, and hemicellulose are analyzed with sodium hydroxide solution and examined using scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDAX), fourier transform infrared (FTIR) spectra, x-ray diffraction (XRD), and thermogravimetry. The decomposition dynamics are determined using a mettler thermogravimetric analyzer. Simultaneously thermogravimetry and differential scanning calorimetry are used to examine the stages of decomposition. The decomposition reactions are investigated using the distributed active energy model (DAEM). The glucose Murashige and Skoog (MS) media, chitin Murashige and Skoog (MS) media, Murashige and Skoog (MS) basal media, high-density oligonucleotide microarray, expressed sequence tag-based transcript and Blast2GO suite, hierarchical clustering and heat representation are involved in examination of <em>Trichoderma</em> species. The Upside regulating genes respond to signal transduction, transcription, translation, post-translational modification, and protein folding with the signal transcription factor Pac1 (PacC) for <em>Trichoderma</em> species growth. The dye decolorization assay, genome-wide gene family evolutionary analysis, and whole-genome sequencing were used to discover prospective genes for detecting high or slow decomposition in fungi. The methodologies and technology have the potential to investigate <em>Trichoderma</em> type, response chemicals, and mechanisms underlying <em>Trichoderma</em> growth and slow decomposition in cocopeat.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982362400028X/pdfft?md5=2459b0b65ac6efc08de4aa3a532dad6e&pid=1-s2.0-S294982362400028X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141323056","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
Adsorptive performance of cottonseed cakes biosorbent and derived activated carbon towards Cu2+ ions removal from aqueous solution: Kinetics modelling, isotherms analysis and thermodynamics 棉籽饼生物吸附剂和衍生活性炭对去除水溶液中 Cu2+ 离子的吸附性能:动力学建模、等温线分析和热力学
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100052
Yowe Kidwe , Djakba Raphaël , Wangmene Bagamla , Mouhamadou Sali , Abia Daouda , Tcheka Constant , Harouna Massai
{"title":"Adsorptive performance of cottonseed cakes biosorbent and derived activated carbon towards Cu2+ ions removal from aqueous solution: Kinetics modelling, isotherms analysis and thermodynamics","authors":"Yowe Kidwe ,&nbsp;Djakba Raphaël ,&nbsp;Wangmene Bagamla ,&nbsp;Mouhamadou Sali ,&nbsp;Abia Daouda ,&nbsp;Tcheka Constant ,&nbsp;Harouna Massai","doi":"10.1016/j.nxsust.2024.100052","DOIUrl":"https://doi.org/10.1016/j.nxsust.2024.100052","url":null,"abstract":"<div><p>Compatible and environmentally clean activated carbon material was prepared via physicochemical method and used for harmful pollutant removal from aqueous solution. The performance of the pristine cottonseed cakes and its activated carbon was examined towards copper ions removal as targeted pollutant through adsorption process. The physicochemical properties of adsorbents were evaluated by numerous experimental techniques such as Fourier transform infra-red spectroscopy, Raman spectroscopy, scanning electron microscopy, the point of zero charge, iodine number and specific surface area. The effect of several key operational parameters such as contact time, adsorbent dose, pH, concentration and temperature were considered. Results of the adsorption tests exhibited significant sensitivity towards copper ions elimination at optimum conditions; the copper uptake capacity was enhanced with time up to equilibrium of 30 min with a minimum adsorbent dose of 0.1 g at alkaline pH of 10 for maximum concentration of 50 mg/L at room temperature (25 °C) and achieved appropriate adsorbed quantities of 51.56 mg/g for cottonseed cakes activated carbon (CCAC) and 48.5 mg/g for cottonseed cakes biosorbent (CCB). The values of point of zero charge are 2.63 and 6.32 for CCB and CCAC respectively which present high electrostatic attraction between positive charge of copper ions and negative charge of the surface at basic medium. Iodine number of 30.35 and 41.92 mg/g indicates random distribution of micropores. The specific surface area of CCAC (30.35 m<sup>2</sup>/g) is higher than the one of CCB (11.94 m<sup>2</sup>/g). FTIR shows good surface chemistry with various functional groups while Raman spectroscopy and SEM analyses revealed myriad morphological features and carbon phases (graphite and diamond). The adsorption of copper ions was described by pseudo second order kinetic model and favoured by Redlich Peterson isotherm corresponding to physisorption on CCB while the one CCAC involves chemical bonding and can be qualified as chemisorption mechanism as confirm by ΔH° of both materials.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000291/pdfft?md5=403ff05ed279b1ab71a6b34606df5472&pid=1-s2.0-S2949823624000291-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141292362","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
Performance scrutiny of spent lithium-ion batteries cathode material as a catalyst for oxidation of benzyl alcohol 废锂离子电池正极材料作为苯甲醇氧化催化剂的性能检测
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2023.100017
Bogalera Papaiah Shivamurthy , Swapnali P. Kirdant , Sudeep Katakam , Purnima Rawat , Vrushali H. Jadhav , Girish Praveen Nayaka
{"title":"Performance scrutiny of spent lithium-ion batteries cathode material as a catalyst for oxidation of benzyl alcohol","authors":"Bogalera Papaiah Shivamurthy ,&nbsp;Swapnali P. Kirdant ,&nbsp;Sudeep Katakam ,&nbsp;Purnima Rawat ,&nbsp;Vrushali H. Jadhav ,&nbsp;Girish Praveen Nayaka","doi":"10.1016/j.nxsust.2023.100017","DOIUrl":"10.1016/j.nxsust.2023.100017","url":null,"abstract":"<div><p>The widespread use of Li-ion batteries (LIBs) in energy storage devices has resulted in the generation of additional waste which contains valuable metal ions and these metal ions are well known for their catalytic activities. The recovered black mass of cathode material was exposed to pretreatment with final calcination for 2 h at 800 <sup>0</sup>C. After the calcination, the material was subjected to structural characterization (XRD, FE-SEM, EDAX, and XPS). In the present work, we have used spent LIBs cathode material as a catalyst for the oxidation reaction of benzyl alcohol to benzoic acid. The catalytic activity of this recovered cathode material was found to be highly efficient showing 100% conversion of benzyl alcohol with &gt;99% selectivity of benzoic acid with lower catalyst loading of even 2%.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982362300017X/pdfft?md5=b2b80cce0a484996df1bf87ee18c1720&pid=1-s2.0-S294982362300017X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139020848","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
Studies on combustion synthesized ZnO and ZnO@ZrO2 nanocomposites for dye contaminated wastewater treatment 燃烧合成 ZnO 和 ZnO@ZrO2 纳米复合材料用于染料污染废水处理的研究
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100053
Abhijit S. Landge , Abbas S. Pathan , Shivaji V. Bhosale , Yogesh V. Hase , Tukaram R. Gaje , Vijay B. Autade , Sandesh R. Jadkar , Sandeep A. Arote
{"title":"Studies on combustion synthesized ZnO and ZnO@ZrO2 nanocomposites for dye contaminated wastewater treatment","authors":"Abhijit S. Landge ,&nbsp;Abbas S. Pathan ,&nbsp;Shivaji V. Bhosale ,&nbsp;Yogesh V. Hase ,&nbsp;Tukaram R. Gaje ,&nbsp;Vijay B. Autade ,&nbsp;Sandesh R. Jadkar ,&nbsp;Sandeep A. Arote","doi":"10.1016/j.nxsust.2024.100053","DOIUrl":"https://doi.org/10.1016/j.nxsust.2024.100053","url":null,"abstract":"<div><p>In this study, zinc oxide (ZnO) and zinc oxide-zirconium dioxide nanocomposites (ZnO@ZrO<sub>2</sub>) were synthesized by a low-cost solution combustion route to study their structural, morphological, optical, and photocatalytic performance. The properties of synthesized nanocomposites were characterized by x-ray diffraction (XRD), UV–vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). Phase formation and purity were confirmed using XRD and EDS. Optical absorption spectra revealed that the addition of ZrO<sub>2</sub> significantly affected optical absorption and band gap energy. The band gap energy increased from 3.01 to 3.24 eV with addition of ZrO<sub>2</sub> in ZnO. FTIR spectra confirmed the formation of ZnO and ZnO@ZrO<sub>2</sub>. SEM micrographs showed a significant change in the morphology of the ZrO<sub>2</sub> addition in ZnO. BET analysis showed surface area for sample P3 ([email protected]<sub>2</sub>) was 28.9 m<sup>2</sup>/g while for sample P1 (ZnO) was 22.5 m<sup>2</sup>/g. In addition, the photocatalytic performance of ZnO and ZnO@ZrO<sub>2</sub> for the decomposition of methylene blue (MB) dye was studied for all samples exposed to solar light. The effect of different contents of ZrO<sub>2</sub> in ZnO@ZrO<sub>2</sub> in terms of degradation efficiency and degradation time are described in detail. The sample P3 showed highest photodegradation efficiency of 84.52 % at degradation time of 240 minutes.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000308/pdfft?md5=36020c9b79d4d2b85a354c05a661e56f&pid=1-s2.0-S2949823624000308-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141323057","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
Red chemistry: Principles and applications 红色化学:原理与应用
Next Sustainability Pub Date : 2024-01-01 DOI: 10.1016/j.nxsust.2024.100048
Swapnil L. Fegade
{"title":"Red chemistry: Principles and applications","authors":"Swapnil L. Fegade","doi":"10.1016/j.nxsust.2024.100048","DOIUrl":"https://doi.org/10.1016/j.nxsust.2024.100048","url":null,"abstract":"<div><p>There is a growing concern regarding the lack of sufficient justification for claims of \"greenness\" in research studies. This concern has sparked heated debates and prompted calls for mandatory discussions on adherence to green chemistry principles in studies that assert environmental friendliness. In response to this pressing issue, the present study introduces the ‘12 Principles of Red Chemistry’. These principles outline methodologies that prioritize immediate but risky chemical objectives over broader ecological considerations. Through the presentation of case studies, this discussion vividly illustrates the non-sustainability inherent in red chemistry practices. While green chemistry advocates for sustainable and environmentally responsible practices, red chemistry prioritizes short-term gains without adequate consideration for long-term environmental impacts. This contrast highlights the significance of green chemistry principles in guiding the chemical industry towards a more sustainable future. The comprehensive discussion on the Principles of Red chemistry serves as a guiding framework for understanding and evaluating the red chemical processes, emphasizing their potential risks and ecological impacts.</p></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949823624000254/pdfft?md5=d214ffd9aec3eb2ff300017208de31e6&pid=1-s2.0-S2949823624000254-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140947781","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
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