RSC sustainability最新文献

Degradation investigation and active packaging performance of cross-linked chitosan film containing gallic acid† 含没食子酸†交联壳聚糖膜的降解研究及活性包装性能

RSC sustainability Pub Date : 2025-05-14 DOI: 10.1039/D5SU00229J

Jessica R. Westlake, Edward Chaloner, Maisem Laabei, Fotis Sgouridis, Andrew D. Burrows and Ming Xie

{"title":"Degradation investigation and active packaging performance of cross-linked chitosan film containing gallic acid†","authors":"Jessica R. Westlake, Edward Chaloner, Maisem Laabei, Fotis Sgouridis, Andrew D. Burrows and Ming Xie","doi":"10.1039/D5SU00229J","DOIUrl":"https://doi.org/10.1039/D5SU00229J","url":null,"abstract":"We report the fabrication and analysis of a vanillin cross-linked chitosan film containing gallic acid as the active component. The active packaging material was found to successfully block 100% of UV light and had good water vapour barrier properties. Cross-linking via Schiff base formation reduced the water solubility and moisture content of the chitosan films and improved tensile properties, with a force at break measured as 29.4 ± 0.5 N. The material performed well in thermal testing, and we evaluated a glass transition temperature of 274.0 °C. We determined the successful controlled release of gallic acid from the composite film using UV-visible spectroscopy over 2 weeks. The material had strong antioxidant and antimicrobial capacities, reducing >98% of 2,2-diphenyl-1-picrylhydrazyl radicals and inhibiting the growth of both E. coli and S. aureus. We investigated the degradation of this biopolymer film in different environments including soil, compost, seawater, UV-light and water. The material reached over 90% degradation in soil within 12 weeks, rising to complete degradation after 24 weeks. We also investigated the potential mechanism for the degradation of the chitosan films, showing the effect of moisture and microbial availability in soil, and the related cleavage of the chitosan backbone via fragmentation. We determined improved degradation when the active components were released into solution before testing. Overall, the film has good physiochemical properties, strong antioxidant and antimicrobial activity and excellent degradation properties. Thus, the presented material is a strong candidate for future development of sustainable active packaging materials.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2680-2695"},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d5su00229j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213710","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

Unlocking renewable energy materials in Nigeria: availability, application, and roadmap for sustainability 解锁尼日利亚可再生能源材料：可用性、应用和可持续发展路线图

RSC sustainability Pub Date : 2025-05-13 DOI: 10.1039/D5SU00121H

Ekele Dinneya-Onuoha

{"title":"Unlocking renewable energy materials in Nigeria: availability, application, and roadmap for sustainability","authors":"Ekele Dinneya-Onuoha","doi":"10.1039/D5SU00121H","DOIUrl":"https://doi.org/10.1039/D5SU00121H","url":null,"abstract":"Nigeria's energy landscape remains highly dependent on fossil fuels, with approximately 60% of the population lacking consistent electricity access. Renewable energy (RE) offers a pathway to enhanced energy security, economic growth, and reduced carbon emissions. Although Nigeria has significant RE potential—ranging from solar (5.5 kW h per m2 per day) to wind and biomass—these resources remain underutilized due to infrastructure, financial, and policy challenges. Solar photovoltaic (PV) technology, while promising, faces high costs due to import dependencies, as does battery storage technology reliant on lithium-ion cells. Additionally, materials for wind and biomass energy production are constrained by limited local manufacturing. Addressing these issues through material innovation and local sourcing is critical; ongoing research in Nigeria explores bio-based materials and sustainable practices, while government programs, though nascent, are beginning to promote local manufacturing. Local initiatives demonstrate potential for RE development, as evidenced by small-scale solar and biomass projects utilizing indigenous resources. However, financial constraints, supply chain challenges, and limited Research and Development (R&D) hinder progress. Moving forward, Nigeria must invest in policy reform and incentive programs to attract private investment in RE and reduce import costs for critical materials. Expanding R&D in material science, fostering partnerships between local researchers and international organizations, and providing targeted training in RE technology and material science are essential. With a unified focus on building a sustainable energy framework, Nigeria can harness its abundant resources for a more resilient and independent energy future.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2534-2566"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d5su00121h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213698","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

Effectiveness, user acceptability and sustainability of Arsiron Nilogon: a rural technology for arsenic removal from drinking water† Arsiron Nilogon的有效性、用户可接受性和可持续性：农村饮用水除砷技术†

RSC sustainability Pub Date : 2025-05-12 DOI: 10.1039/D5SU00007F

Saranga Baishya, Shamiran Baroi, Tushmita Das, Rituparna Saikia and Robin K. Dutta

{"title":"Effectiveness, user acceptability and sustainability of Arsiron Nilogon: a rural technology for arsenic removal from drinking water†","authors":"Saranga Baishya, Shamiran Baroi, Tushmita Das, Rituparna Saikia and Robin K. Dutta","doi":"10.1039/D5SU00007F","DOIUrl":"https://doi.org/10.1039/D5SU00007F","url":null,"abstract":"An investigation of groundwater of Kuruabahi village in the Golaghat district of Assam, one of the worst arsenic-affected states in India, revealed a widespread contamination of arsenic up to 344 μg L−1, much above the WHO guideline value of 10 μg L−1 for drinking water. Except a few, most of the villagers were unaware of its connection with prevalent cancer and other arsenicosis symptoms in the village. This study examines the experience of implementation of Arsiron Nilogon, a rural technology, for removal of arsenic at all 320 households in the village. Water samples from all groundwater sources (tube wells) were tested for arsenic and other heavy metals using an atomic absorption spectrophotometer (AAS) attached to a hydride vapor generator (HVG) and for other water quality parameters by standard methods. The arsenic concentrations in all 320 treated water samples have been found to be undetectable (<2 μg L−1) using an AAS-HVG, along with other relevant water quality parameters including heavy metals conforming to the WHO guidelines during periodic testing, which confirm the very good technical performance of the Arsiron Nilogon method in the field. The pH of all water samples was between 6.32 and 7.13 initially, which increased to 7.3 after treatment. The increase of the pH between 7.0 and 7.3 after treatment may be correlated to recovery from the chronic acidity problem after they started use of the filters, as reported by some villagers, an additional benefit of the filter. The safe tiny solid sludge was collected by all users as advised for proper disposal. The overall percentage of uninterrupted users two years postimplementation was found to be 70.63%, which endorse the good user acceptability of the filters.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2669-2679"},"PeriodicalIF":0.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d5su00007f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213709","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

Advances in 3D printing with eco-friendly materials: a sustainable approach to manufacturing 采用环保材料的3D打印技术的进步：一种可持续的制造方法

RSC sustainability Pub Date : 2025-05-05 DOI: 10.1039/D4SU00718B

Kavya Agrawal and Asrar Rafiq Bhat

引用次数: 0

Insights into hierarchical porous titanium(iv) phosphonates: synthesis, structure & applications 分级多孔钛（iv）磷酸盐：合成、结构和应用

RSC sustainability Pub Date : 2025-05-02 DOI: 10.1039/D5SU00074B

Archana K. Pattnaik, Gobinda Chandra Behera and Kulamani Parida

{"title":"Insights into hierarchical porous titanium(iv) phosphonates: synthesis, structure & applications","authors":"Archana K. Pattnaik, Gobinda Chandra Behera and Kulamani Parida","doi":"10.1039/D5SU00074B","DOIUrl":"https://doi.org/10.1039/D5SU00074B","url":null,"abstract":"Hierarchically porous titanium(IV) phosphonates (HPTPs) have recently attracted significant attention as a novel class of hybrid materials that achieve remarkable flexibility in structural porosity, chemical strength, and multifunctionality, offering broad applicability compared to traditional hybrid materials. Unlike carboxylate-based metal–organic frameworks (MOFs), they exhibit robust hydrolytic stability due to their multimodal coordinating ability and strong Ti–O–P bonding. This makes them suitable candidates for catalysis, pollutant adsorption, ion exchange, and energy storage. However, despite their promising capabilities, the unpredictable self-assembly of Ti(IV) metal nodes, poor structural crystallinity, and challenges in hierarchical pore size control hinder the tunability of these materials for targeted applications. Furthermore, the relationships between porosity, stability, and catalytic efficiency necessitate further research to improve overall performance. This review critically examines synthetic methodologies, structural features, and emerging applications of HPTPs, highlighting strategies to address these limitations. Despite advancements in synthetic procedures, the crystallization of HPTPs with precise pore topology and desirable electronic characteristics remains challenging. The combination of computational modeling and machine learning may enhance material design, stability, and porosity. Additionally, solventless strategies alongside green fabrication and nanomaterial integration, could further expand the potential applications of HPTPs in energy storage, photocatalysis, and wastewater treatment, paving the way for industrial-scale utilization.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2472-2500"},"PeriodicalIF":0.0,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d5su00074b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213708","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

Design for recycle of devices to ensure efficient recovery of technology critical metals 设计回收装置，确保技术关键金属的有效回收

RSC sustainability Pub Date : 2025-04-25 DOI: 10.1039/D5SU00128E

Molly E. Keal, Sean Scott, Bashayer N. N. Alsulami, Jeff Kettle, Andrew Feeney, Jacqueline S. Edge, Paul A. Anderson, Gavin D. J. Harper, Allan Walton, Guillaume Zante and Andrew P. Abbott

{"title":"Design for recycle of devices to ensure efficient recovery of technology critical metals","authors":"Molly E. Keal, Sean Scott, Bashayer N. N. Alsulami, Jeff Kettle, Andrew Feeney, Jacqueline S. Edge, Paul A. Anderson, Gavin D. J. Harper, Allan Walton, Guillaume Zante and Andrew P. Abbott","doi":"10.1039/D5SU00128E","DOIUrl":"https://doi.org/10.1039/D5SU00128E","url":null,"abstract":"Many of the issues associated with recycling devices containing small but significant amounts of technology critical metals, arise from the choice of materials and, most importantly, the joining methods for different materials. In many cases, recycling could be simplified and made more efficient by employing design for recycle principles which consider the requirements for separation. This study highlights recent innovative recycling tools which can impart greater selectivity during material separation and shows how often small changes in device architecture can greatly simplify critical metal recovery and promote circularity. It also discusses how design can be used to enable these tools to be assembled into the recycling flowsheet, to decrease energy and chemical input and maximise the recovery of technology critical metals. It also promotes how digital product passports could be used in combination with AI to develop algorithms to develop smart recycling flowsheets.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2455-2471"},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d5su00128e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213707","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

Nonthermal plasma assisted desorption and conversion of captured CO2 from atmospheric air† 非热等离子体辅助解吸和转化捕获的二氧化碳从大气空气†

RSC sustainability Pub Date : 2025-04-25 DOI: 10.1039/D4SU00768A

Chinwendu Umeojiakor, Loukia-Pantzechroula Merkouri, Anthony Griffin, Melis S. Duyar, Zhe Qiang and Yizhi Xiang

{"title":"Nonthermal plasma assisted desorption and conversion of captured CO2 from atmospheric air†","authors":"Chinwendu Umeojiakor, Loukia-Pantzechroula Merkouri, Anthony Griffin, Melis S. Duyar, Zhe Qiang and Yizhi Xiang","doi":"10.1039/D4SU00768A","DOIUrl":"https://doi.org/10.1039/D4SU00768A","url":null,"abstract":"CO2 capture and conversion are essential to mitigate the global climate crisis. However, sorbent regeneration frequently relies on the high-temperature thermal-driven process, making the integration of intermittent renewable energy into the process an inherent challenge. Herein, with a lime-based sorbent model system, we show that an electrified process for the desorption and conversion of captured CO2 (to CO or CH4) can be achieved through a non-thermal dielectric-barrier discharge plasma reactor. Specifically, up to 87.7% of captured CO2 (by CaO from the air) can be converted into CO under the discharge of 10% H2/Ar at a power of 24.7 W. The reaction can also be tuned for CH4 production when a dual function material, Ni–Ru CaO/CeO2–Al2O3, or a physical mixture of CaO and a Ru/Al2O3 methanation catalyst is employed. The kinetics of such a process are evaluated based on the nonsteady-state semi-batch reactor model. The reactions are identified to be first order for both CO2 desorption and hydrogenation processes.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2632-2643"},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d4su00768a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213703","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

Field effects explain the unintuitive potential response of electrochemical oxygen evolution in acid† 场效应解释了酸†中电化学析氧的非直观电位响应

RSC sustainability Pub Date : 2025-04-24 DOI: 10.1039/D5SU00080G

Anjana Tripathi, Vivianne K. Ocampo-Restrepo, Jens Nørskov and Georg Kastlunger

{"title":"Field effects explain the unintuitive potential response of electrochemical oxygen evolution in acid†","authors":"Anjana Tripathi, Vivianne K. Ocampo-Restrepo, Jens Nørskov and Georg Kastlunger","doi":"10.1039/D5SU00080G","DOIUrl":"https://doi.org/10.1039/D5SU00080G","url":null,"abstract":"Electrochemical water oxidation (OER) is the most important electrode reaction in electrocatalysis, representing the default counter-reaction in the plethora of modern electroreductions. Given this prominent role in the electrochemistry-based green transition, improving its efficiency is of utmost importance. Here, identifying novel catalysts by means of computational screening necessitates clarity on the reaction mechanism as this is used to decide on appropriate activity descriptors. To date, however, the mechanism of OER, even on the most widely used catalyst in acid, IrO2, is still debated, and the debate is fuelled by the consistent appearance of Tafel slopes indicative of a non-electrochemical rate-limiting step. Here, we employ density functional calculations and microkinetic modelling to analyse the mechanism of acidic OER on IrO2(110), with an emphasis on the polarization of reaction intermediates. Introducing this degree of freedom shows that the electrostatic destabilization of surface-bound oxygen atoms with increasingly positive potentials increases the effective potential response of the reaction. Thus, a reaction mechanism through OOH*-formation could be confused with a non-electrochemical rate-limiting step. Furthermore, we highlight that a mechanism limited by the desorption of adsorbed O2 is unlikely, as this step is facile at room temperature, but caution is needed in treating adsorbed O2 in GGA-DFT. By incorporating these elements into our model, we simulate Tafel curves that reproduce the experimental potential response in both the low and high overpotential regions, pointing out that including surface dipole effects is essential for understanding and reproducing experiments.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2659-2668"},"PeriodicalIF":0.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d5su00080g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213705","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

Phyco-synthesized inorganic nanoparticles and their biomedical applications 植物合成无机纳米粒子及其生物医学应用

RSC sustainability Pub Date : 2025-04-24 DOI: 10.1039/D5SU00014A

Nishmitha Ramaraj, Gobika Thiripuranathar, Sagarika Ekanayake, Keerthi Attanayake and Upul Marapana

{"title":"Phyco-synthesized inorganic nanoparticles and their biomedical applications","authors":"Nishmitha Ramaraj, Gobika Thiripuranathar, Sagarika Ekanayake, Keerthi Attanayake and Upul Marapana","doi":"10.1039/D5SU00014A","DOIUrl":"https://doi.org/10.1039/D5SU00014A","url":null,"abstract":"Marine macroalgae have long been utilized commercially and industrially in food, pharmaceutical, and cosmetic industries. The current trend is to synthesize nanoparticles (NPs) utilizing marine macroalgae as they are a rich source of bioactive compounds. Utilization of marine macroalgae and algal-based polysaccharides is becoming a trendsetter as a simple, cost-effective, sustainable method to synthesize metallic and metallic oxide NPs, thus opening up a new field known as phyco-nanotechnology. Due to safe and biocompatible nature, macroalgae based NPs are investigated for their biological activities such as antibacterial, antifungal, antiviral, anti-inflammatory, anticancer and antioxidant activities. This review focuses on metallic and metallic oxide NPs synthesized from marine macroalgae and their biological activities, with a detailed comparison of how various types of NPs differ in their mechanisms to highlight their distinct effects and potential biomedical applications. Furthermore, current innovations of marine macroalgal polysaccharides such as alginate, fucoidan, and ulvan based NPs as well as their promising opportunities in biomedical applications and therapeutics are also reviewed.","PeriodicalId":74745,"journal":{"name":"RSC sustainability","volume":" 6","pages":" 2567-2581"},"PeriodicalIF":0.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/su/d5su00014a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213699","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: Techno-economic assessment of two-stage hydropyrolysis of lignin for BTX production using iron-based catalysts 修正：利用铁基催化剂对木质素加氢热解制备BTX的两段技术经济评价

RSC sustainability Pub Date : 2025-04-22 DOI: 10.1039/D5SU90025E

Giuseppe Bagnato, Jamie Horgan and Aimaro Sanna

引用次数: 0