RSC sustainability最新文献_第2页

Identifying the best ML model for predicting the bandgap in a perovskite solar cell† 确定预测过氧化物太阳能电池带隙的最佳 ML 模型†。

RSC sustainability Pub Date : 2024-10-05 DOI: 10.1039/D4SU00370E

Nita Samantaray, Arjun Singh and Anu Tonk

{"title":"Identifying the best ML model for predicting the bandgap in a perovskite solar cell†","authors":"Nita Samantaray, Arjun Singh and Anu Tonk","doi":"10.1039/D4SU00370E","DOIUrl":"https://doi.org/10.1039/D4SU00370E","url":null,"abstract":"Perovskite solar cells (PSCs) have gained attention for their characteristics of high efficiency and commercial viability. However, the efficiency of a PSC depends on various factors. One such important parameter is the bandgap of the active layer as it plays an important role in PSCs with regards to the amount of light absorption. Thus, it influences the overall performance of the solar cell. It is important to predict the bandgap of the active layer in PSCs to achieve an effective fabrication process. In this study, we compared six machine learning (ML) models to predict the bandgap. The models were created using a dataset of 500 devices, such as MAPbI3, FAPbI3, CsSnI3 and CsMAPbI3, obtained from The Perovskite Database Project. These models were further validated using a different dataset of 50 devices. The models were created using ML methods: random forest, gradient boosting regressor, k-nearest neighbours (KNN), AdaBoost, Gaussian process regressor, and bagging. The feature parameters considered for the models were the A coefficient, B coefficient, and C coefficient, out of various other parameters such as the perovskite dimension, perovskite thickness, perovskite deposition temperature, and perovskite deposition time. The random forest model showed better results compared to other models with a low mean absolute error (MAE) of 0.000775, low mean squared error (MSE) of 0.00000920, and high coefficient of determination (r2) of 0.9994.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3520-3524"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00370e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565745","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

Tuning acid extraction of magnesium and calcium from platinum group metal tailings for CO2 conversion and storage† 从铂族金属尾矿中酸性提取镁和钙，用于二氧化碳转化和封存†。

RSC sustainability Pub Date : 2024-10-02 DOI: 10.1039/D4SU00443D

Caleb M. Woodall, Katherine Vaz Gomes, Andreas Voigt, Kai Sundmacher and Jennifer Wilcox

{"title":"Tuning acid extraction of magnesium and calcium from platinum group metal tailings for CO2 conversion and storage†","authors":"Caleb M. Woodall, Katherine Vaz Gomes, Andreas Voigt, Kai Sundmacher and Jennifer Wilcox","doi":"10.1039/D4SU00443D","DOIUrl":"https://doi.org/10.1039/D4SU00443D","url":null,"abstract":"Avoiding the worst impacts of climate change requires reducing greenhouse gas emissions and removing atmospheric CO2 with permanent storage. The global shift to low- and zero-emission energy sources demands increased metal mining, resulting in substantial mine tailings. Mineral carbonation offers a method to store CO2 in alkaline-rich mine tailings, addressing both waste and excess atmospheric CO2. This study explores the use of a pH-swing process to optimize the extraction of calcium and magnesium from plagioclase feldspar-rich platinum group metal (PGM) mine tailings from the Stillwater Mine in Nye, Montana. Various organic (citric, acetic, oxalic) and mineral (hydrochloric, sulfuric) acids were tested at different concentrations, solid/liquid ratios, and dissolution times. Organic acids, particularly citric and oxalic, were selective for magnesium and calcium, respectively, with citric acid extracting 44% of available magnesium in 72 hours. Sulfuric acid proved most effective in extracting both metals but may be impractical due to corrosion-resistant equipment costs. Carbonation of synthetic leachate indicated precipitation yields above 90% at pressures between 5 and 9 bar, producing carbonate products under 3 μm. Additionally, comparing in situ and ex situ base addition methods suggests that pH pre-swing, i.e., before carbonation is comparable to adding base during the reaction. This study advances the understanding of divalent cation extraction from plagioclase feldspar-rich PGM mine tailings but highlights the need for further research to develop an economic process.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3320-3333"},"PeriodicalIF":0.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00443d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565708","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

Promoting uniform zinc coatings through the use of quaternary ammonium salts based on phthalimide as electroplating additives† 使用基于邻苯二甲酰亚胺的季铵盐作为电镀添加剂，促进锌镀层的均匀性†。

RSC sustainability Pub Date : 2024-10-01 DOI: 10.1039/D4SU00343H

Kexin Du, Xuyang Li, Wenhao Zhou, Peikun Zou, Nayun Zhou, Xin Chen and Limin Wang

{"title":"Promoting uniform zinc coatings through the use of quaternary ammonium salts based on phthalimide as electroplating additives†","authors":"Kexin Du, Xuyang Li, Wenhao Zhou, Peikun Zou, Nayun Zhou, Xin Chen and Limin Wang","doi":"10.1039/D4SU00343H","DOIUrl":"https://doi.org/10.1039/D4SU00343H","url":null,"abstract":"Five quaternary ammonium salts derived from phthalimide compounds (PI1 to PI5) were synthesized and used for the first time as additives in zinc electroplating. Electrochemical experiments and theoretical calculations identified PI4 as the most effective compound for inhibiting zinc deposition and enhancing electrode adsorption among these compounds. Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), and X-ray Diffraction (XRD) confirmed that PI4 significantly improves the uniformity and compactness of the zinc coatings. Moreover, the role of PI4 in zinc electroplating was elucidated. It reduces the interfacial tension between the electroplating solution and the substrate surface, facilitating uniform deposition of metal ions on the substrate, thus resulting in smoother and more adherent coatings. This study provides insights for future research on aqueous zinc-ion batteries, particularly regarding zinc anodes, and also provides a way for sustainable development.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3500-3506"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00343h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565743","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

Carboxylation reactions for the sustainable manufacture of chemicals and monomers 可持续生产化学品和单体的羧化反应

RSC sustainability Pub Date : 2024-09-30 DOI: 10.1039/D4SU00482E

Laura Faba and Salvador Ordóñez

{"title":"Carboxylation reactions for the sustainable manufacture of chemicals and monomers","authors":"Laura Faba and Salvador Ordóñez","doi":"10.1039/D4SU00482E","DOIUrl":"https://doi.org/10.1039/D4SU00482E","url":null,"abstract":"Carboxylation stands out as one of the most versatile and viable routes for carbon dioxide fixation, a crucial chemical transformation essential for advancing capture technologies and fostering a sustainable industry. The carboxylic acids and derivatives produced through this process hold considerable interest for various sectors, including pharmaceuticals and polymers. Presently, most of these chemicals are derived from non-renewable resources, underscoring the imperative need to develop sustainable pathways for their synthesis. The inherent stability of the CO2 molecule, owing to its high oxidation state and linear configuration, poses significant challenges for activation. Diverse approaches, including photochemical, electrochemical, enzymatic, and thermochemical carboxylation have been explored. While noteworthy results have been achieved with these methods, substantial efforts are still required to facilitate their scalability. This review provides a comprehensive overview of each of these routes, elucidating their respective strengths and weaknesses. Emphasis is placed on thermochemical routes, given their proximity to potential industrial-scale application.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3167-3182"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00482e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565673","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

Chemically recyclable and reprogrammable epoxy thermosets derived from renewable resources† 从可再生资源中提取的化学可回收和可重新编程的环氧热固性塑料†。

RSC sustainability Pub Date : 2024-09-27 DOI: 10.1039/D4SU00382A

Tankut Türel, Özgün Dağlar, Christos Pantazidis and Željko Tomović

{"title":"Chemically recyclable and reprogrammable epoxy thermosets derived from renewable resources†","authors":"Tankut Türel, Özgün Dağlar, Christos Pantazidis and Željko Tomović","doi":"10.1039/D4SU00382A","DOIUrl":"https://doi.org/10.1039/D4SU00382A","url":null,"abstract":"Epoxy thermosets constitute a significant portion of high-performance plastics due to their excellent thermal and mechanical properties, making them suitable for a wide range of applications. However, traditional epoxy networks are produced from a petroleum-based, reprotoxic and endocrine-disruptor DGEBA and face significant limitations in chemical recycling. Current recycling methods for epoxy systems rely on harsh and non-green conditions, often resulting in a mixture of small molecules and oligomers that are tedious to isolate or repurpose. Consequently, it is crucial to develop bio-based monomers with functional groups that enable the synthesis of fully recyclable polymers. For this purpose, herein, we have employed a bio-based, liquid monomer C2 derived from vanillin, containing aldehyde, acetal, and oxirane-ring functionalities, which was polymerized under solvent-free, green conditions with bio-derived diamines, resulting in an array of doubly cleavable epoxy thermosets with diverse thermal and mechanical properties. These networks combine the desirable properties of traditional epoxy systems with intrinsic mildly cleavable nature. Remarkably, these thermosets can be fully depolymerized into reusable vanillin and well-defined polyols, or they can be recycled and reprogrammed through a transimination pathway. This innovative approach, combining controlled depolymerization, closed-loop recycling and reprogramming, offers significant potential for sustainable polymer management.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3311-3319"},"PeriodicalIF":0.0,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00382a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565696","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

Utilization of green resource-based Mimosa pudica hydrogel powder in a cellulose acetate-based polymeric membrane as absorbent: a sustainable approach towards female hygiene application† 在醋酸纤维素聚合物膜中利用基于绿色资源的含羞草水凝胶粉末作为吸收剂：实现女性卫生应用的可持续方法†。

RSC sustainability Pub Date : 2024-09-27 DOI: 10.1039/D4SU00381K

Roshni Pattanayak, Sukanya Pradhan and Smita Mohanty

{"title":"Utilization of green resource-based Mimosa pudica hydrogel powder in a cellulose acetate-based polymeric membrane as absorbent: a sustainable approach towards female hygiene application†","authors":"Roshni Pattanayak, Sukanya Pradhan and Smita Mohanty","doi":"10.1039/D4SU00381K","DOIUrl":"https://doi.org/10.1039/D4SU00381K","url":null,"abstract":"This study presents the development of a novel membrane-based absorbent by incorporating Mimosa pudica hydrogel (MPH) powder, derived from the mucilage of its seeds, into a cellulose acetate polymer matrix using the non-solvent induced phase separation (NIPS) method. The membranes were prepared with varying weight percentages (wt%) of MPH to evaluate their potential as absorbent cores for hygiene products. The enhanced absorbency observed for 1 wt% MPH-loaded cellulose acetate membrane (MCA-2) was attributed to the MPH powder's large surface area and macroporous structure, as confirmed by Brunauer–Emmett–Teller (BET) analysis. The MCA-2 membrane exhibited maximum absorbency values of 276.66%, 402.87%, and 572.5% in distilled water, 0.9 wt% saline solution, and defibrinated sheep blood, respectively, within 30 minutes along with an absorbency under load value of 439.69% in saline solution at 60 minutes. An in-depth analysis of the thermal, mechanical, morphological and topographical properties of the developed membrane was conducted. This exhibited a modulus value of approximately 120 ± 0.5 MPa with 13.07 ± 0.2% elongation and also possessed significant antibacterial properties against E. coli and S. aureus bacteria justifying its potential as an absorbent core. Additionally, 16S rRNA sequencing was performed to identify bacteria involved in soil burial degradation, highlighting its overall impact and sustainability towards the environment. These findings suggest that MPH-incorporated membranes hold significant promise as absorbent materials in female hygiene applications.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3525-3545"},"PeriodicalIF":0.0,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00381k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565746","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

Sustainable brain-inspired electronics: digging into natural biomaterials for healthcare applications 可持续的脑启发电子学：挖掘天然生物材料的医疗应用价值

RSC sustainability Pub Date : 2024-09-27 DOI: 10.1039/D4SU00459K

João V. Paulin and Carlos C. B. Bufon

{"title":"Sustainable brain-inspired electronics: digging into natural biomaterials for healthcare applications","authors":"João V. Paulin and Carlos C. B. Bufon","doi":"10.1039/D4SU00459K","DOIUrl":"https://doi.org/10.1039/D4SU00459K","url":null,"abstract":"With traditional medical technologies shifting towards a more personalized point-of-view, current semiconductor-based electronics may need high-performance computing capability for cognitive and adaptive functions based on unspecific, multi-input, and complex tasks. Hence, developing electronic devices with improved capabilities is of utmost interest. One option takes inspiration from the synapse functionalities of the human brain. Due to their scalability and low power consumption, memristors and electrolyte-gated transistors are ideal candidates for efficient brain-inspired applications. Additionally, combining these device architectures with natural biomaterials (environmentally benign, biodegradable, biocompatible, and mechanically conformable) represents a new horizon toward transient and implantable synaptic devices. Here, we advertised the advances in artificial synaptic systems based on natural biomaterials and how these devices can be integrated into sustainable and intelligent healthcare systems. Our comprehensive review formulates the steps necessary for the next generation of healthcare electronics to flourish.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3235-3263"},"PeriodicalIF":0.0,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00459k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565677","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

Correction: Hydrochar from Sargassum muticum: a sustainable approach for high-capacity removal of Rhodamine B dye 更正：来自马尾藻的水碳：一种可持续的高容量去除罗丹明 B 染料的方法

RSC sustainability Pub Date : 2024-09-26 DOI: 10.1039/D4SU90040E

D. Spagnuolo, D. Iannazzo, T. Len, A. M. Balu, M. Morabito, G. Genovese, C. Espro and V. Bressi

引用次数: 0

Ultra-thin order–disorder CeO2 nanobelts as the non-carbon support of the PtCu catalyst towards methanol oxidation and oxygen reduction reactions† 超薄有序异序 CeO2 纳米颗粒作为 PtCu 催化剂的非碳载体，用于甲醇氧化和氧还原反应†。

RSC sustainability Pub Date : 2024-09-25 DOI: 10.1039/D4SU00449C

Han Zhi, Boda Dong, Xingxing Guo and Feng Xu

{"title":"Ultra-thin order–disorder CeO2 nanobelts as the non-carbon support of the PtCu catalyst towards methanol oxidation and oxygen reduction reactions†","authors":"Han Zhi, Boda Dong, Xingxing Guo and Feng Xu","doi":"10.1039/D4SU00449C","DOIUrl":"https://doi.org/10.1039/D4SU00449C","url":null,"abstract":"The use of carbon supports in direct methanol fuel cells easily leads to the shedding and poisoning of the Pt catalyst and hence the decrease of catalytic activity. Non-carbon materials have been studied to enhance the metal–support interaction and the catalytic performance. Herein, we explored ultra-thin CeO2 nanobelts (2D-CeO2) with the order–disorder structure as the support of the PtCu catalyst. PtCu/2D-CeO2 shows the highest current density of 37.24 mA cm−2 toward the methanol oxidation reaction (MOR), and a limiting current density of 4.82 mA cm−2 towards the oxygen reduction reaction. The order–disorder structure of 2D-CeO2 generates a high volume of oxygen vacancies and strong metal–support interaction. The Pt0 proportion of PtCu/2D-CeO2 is much higher than that of PtCu/C which increases the active sites. The d-band center of PtCu is lowered which facilitates the adsorption and dissociation of reactants, thereby dramatically boosting the electro-catalytic performance.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 11","pages":" 3456-3463"},"PeriodicalIF":0.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/su/d4su00449c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565739","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

High performance long chain polyesters via melt copolymerization of cutin-inspired monomers†‡ 通过受 cutin 启发的单体的熔融共聚实现高性能长链聚酯†‡

RSC sustainability Pub Date : 2024-09-24 DOI: 10.1039/D4SU00454J

Zewen Zhu, Joshua T. Damron, Jong K. Keum, Logan Kearney, Vera Bocharova and Jeffrey C. Foster

引用次数: 0