Sustainable Chemistry最新文献_第2页

Green and Sustainable Chemistry Teacher Education: Experiences from a Brazilian University 绿色与可持续化学教师教育:来自巴西一所大学的经验

Sustainable Chemistry Pub Date : 2023-07-21 DOI: 10.3390/suschem4030020

Caroindes J. C. Gomes, Vânia G. Zuin Zeidler

{"title":"Green and Sustainable Chemistry Teacher Education: Experiences from a Brazilian University","authors":"Caroindes J. C. Gomes, Vânia G. Zuin Zeidler","doi":"10.3390/suschem4030020","DOIUrl":"https://doi.org/10.3390/suschem4030020","url":null,"abstract":"Green and sustainable chemistry education provides opportunities to comprehend and base chemistry knowledge on relevant social and historical contexts, reflecting on fairer and sustainable realities. For this purpose, this work discusses the possibilities and challenges observed during a chemistry teacher training course at a Brazilian university, analyzing how the undergraduates utilized the formative experiences provided by the discipline and how they reinterpreted them when developing didactic sequences based on socio-scientific issues. Using discursive textual analysis, we studied the self-assessments and the didactic sequences produced. The activities developed were positively evaluated by the students and provided the opportunity to create didactic sequences with potential application in schools, founded on cooperative and democratic dynamics and topics that were locally important. On the other hand, the students had some difficulties including chemistry content, mainly considering their relationship with the topics addressed. However, the process proved to be fundamental for the students to perceive themselves as teachers, in addition to provoking them toward (re)constructions and other possibilities.","PeriodicalId":22103,"journal":{"name":"Sustainable Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90624894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advances in Copper-Based Materials for Sustainable Environmental Applications 可持续环境应用铜基材料的最新进展

Sustainable Chemistry Pub Date : 2023-07-15 DOI: 10.3390/suschem4030019

Sumalatha Bonthula, S. Bonthula, Ramyakrishna Pothu, R. Srivastava, Rajender Boddula, A. B. Radwan, N. Al-Qahtani

引用次数: 2

Sustainable Sawdust/Eucalyptol Absorption Matrix for Odor Slow-Release in Plywood Floor 胶合板地板的可持续木屑/桉树醇吸收基质

Sustainable Chemistry Pub Date : 2023-07-12 DOI: 10.3390/suschem4030018

Yuliya Logvina, Sónia Fernandes, Luís Pinto da Silva, J. E. da Silva

{"title":"Sustainable Sawdust/Eucalyptol Absorption Matrix for Odor Slow-Release in Plywood Floor","authors":"Yuliya Logvina, Sónia Fernandes, Luís Pinto da Silva, J. E. da Silva","doi":"10.3390/suschem4030018","DOIUrl":"https://doi.org/10.3390/suschem4030018","url":null,"abstract":"A sustainable matrix based on eucalyptol essential oil/sawdust was developed and applied on laminated plywood. This finish aims to serve as a eucalyptol odor slow release. Eucalyptol odor release was monitored with gas chromatography coupled with a flame ionization detector (GC-FID: Limits of Detection and Quantification of 0.70 g/m3 and 2.11 g/m3, respectively, and with linearity up to 18.6 g/m3). Measurement of the eucalyptol odor released was performed during a six-month period, and it was found that the release followed a first-order exponential decay with a decay rate constant of 0.0169 per day. The half-life was determined to be of 48 days. The granulometry and particle size porosity of sawdust were analyzed by Scanning Electron Microscopy. A sawdust size fraction of 112–200 μm showed the best eucalyptol absorption capacity, with 1:3 masses ratio (sawdust:eucalyptol). The release duration of eucalyptol is influenced by the quantity of the eucalyptol–sawdust composite and the aperture size for release. Through the determination of this relationship, it was found that applying 15.0 g of the composite through a 0.8 mm diameter aperture resulted in a 6-month eucalyptol release period. This outcome is regarded as highly favorable, considering the inherent high volatility of eucalyptol and the relatively small amount of composite required for future product applications. The new product is characterized by a carbon footprint (considering the industry frontiers) of 5.94 kg CO2eq/m2 of plywood floor.","PeriodicalId":22103,"journal":{"name":"Sustainable Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77794924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoluminescent Copper Nanoclusters in “Turn-Off/Turn-On” Sensing of Picric Acid/Hydrogen Peroxide 光致发光铜纳米团簇在苦味酸/过氧化氢“关/开”传感中的应用

Sustainable Chemistry Pub Date : 2023-06-01 DOI: 10.3390/suschem4020017

Renuka Singh, Seema Gupta, M. K. Bharty, C. Tripathi, D. Guin

{"title":"Photoluminescent Copper Nanoclusters in “Turn-Off/Turn-On” Sensing of Picric Acid/Hydrogen Peroxide","authors":"Renuka Singh, Seema Gupta, M. K. Bharty, C. Tripathi, D. Guin","doi":"10.3390/suschem4020017","DOIUrl":"https://doi.org/10.3390/suschem4020017","url":null,"abstract":"In this paper, we illustrate the synthesis, characterization, and application of a Bovine Serum Albumin-stabilized copper nanocluster (BSA@CuNCs)-based photoluminescence (PL) bifunctional sensor for the selective and rapid sensing of picric acid (PA) and hydrogen peroxide (H2O2). Blue-emitting copper nanoclusters were synthesized using one-pot synthesis at room temperature. The PL intensity of BSA@CuNCs was shown to be quenched (“Turn-off”) with an increase in the concentration of PA and intensified (“Turn-on”) with the addition of H2O2. The quenching of PL intensity of BSA@CuNCs was shown to be extremely selective and rapid towards PA. A linear decrease in the PL emission intensity of BSA@CuNCs was observed with a PA concentration in the range of 0–15 μM. An extremely low detection limit of 60 nM (3σ/k) was calculated. The as-prepared BSA@CuNCs also exhibited superior selectivity for PA detection in aqueous medium. The developed sensor was also utilized for the sensing of PA in natural water samples. The probe was found to be extremely sensitive towards the detection of H2O2. An increase in the PL intensity of BSA@CuNCs was seen with the addition of H2O2, with a detection limit of 0.11 μM.","PeriodicalId":22103,"journal":{"name":"Sustainable Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90655781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption Characteristics of Cetirizine on Graphene Oxide 西替利嗪在氧化石墨烯上的吸附特性

Sustainable Chemistry Pub Date : 2023-05-30 DOI: 10.3390/suschem4020016

Tuhin Bhattacharjee, Arnab Bhattacharjee, Deepmoni Deka, Mihir Kumar Purkait, Devasish Chowdhury, Gitanjali Majumdar

{"title":"Adsorption Characteristics of Cetirizine on Graphene Oxide","authors":"Tuhin Bhattacharjee, Arnab Bhattacharjee, Deepmoni Deka, Mihir Kumar Purkait, Devasish Chowdhury, Gitanjali Majumdar","doi":"10.3390/suschem4020016","DOIUrl":"https://doi.org/10.3390/suschem4020016","url":null,"abstract":"Water pollution caused by emerging contaminants such as pharmaceutical compounds is a growing problem worldwide. In this reported work, graphene oxide (GO) was directly used to remove an antihistamine drug, cetirizine. GO was prepared from graphite using a modified Hummer’s method and was characterized by UV–vis spectroscopy, Fourier-transformed infrared spectroscopy (FTIR), thermogravimetric analyzer (TGA), field scanning electron microscope (FE-SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), etc. GO was demonstrated to be a highly efficient adsorbent for removing cetirizine from an aqueous solution. The adsorption of cetirizine on GO at various pH levels showed that in acidic pH with the adsorption shows faster kinetics and complete removal of cetirizine within 10 min, followed by neutral pH, which showed relatively slower kinetics but complete removal of cetirizine. However, at basic pH, GO could not completely remove cetirizine after 24 h. At a neutral pH, GO showed maximum adsorption of 81.30 mg g−1 of cetirizine. The adsorption isotherm results showed good agreement with the Langmuir isotherm. The BET surface area analysis showed the presence of mesoporosity in GO. In addition, the BET analysis further revealed a type IV isotherm curve being followed. A plausible mechanism is also discussed in the paper. The recyclability experiment demonstrates an adsorption efficiency of 85% after four cycles. The thermodynamic study reveals that adsorption is thermodynamically less favorable at higher temperatures. Hence, the current study successfully demonstrates the use of GO as an efficient adsorbent in removing cetirizine. It also studies the various factors and interactions affecting adsorption. Thus, this study sheds light on the adsorption characteristics of cetirizine on graphene oxide.","PeriodicalId":22103,"journal":{"name":"Sustainable Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lysine-Based Silicone Surfactants 赖氨酸基有机硅表面活性剂

Sustainable Chemistry Pub Date : 2023-05-04 DOI: 10.3390/suschem4020015

Abygail Camacho Ramirez, M. Meléndez-Zamudio, Antonio Guerra Contreras, M. Brook

引用次数: 0

Bio-Based Chemicals from Dedicated or Waste Biomasses: Life Cycle Assessment for Evaluating the Impacts on Land 来自专用或废弃生物质的生物基化学品:用于评估对土地影响的生命周期评估

Sustainable Chemistry Pub Date : 2023-04-26 DOI: 10.3390/suschem4020014

D. Cespi

{"title":"Bio-Based Chemicals from Dedicated or Waste Biomasses: Life Cycle Assessment for Evaluating the Impacts on Land","authors":"D. Cespi","doi":"10.3390/suschem4020014","DOIUrl":"https://doi.org/10.3390/suschem4020014","url":null,"abstract":"Green chemistry and engineering encourage the usage of renewable sources, in replacement fossil fuels. The sector of bio-based products is one of the most predominant examples of such replacements in different fields. However, the impact of biomasses usage is far from being negligible or net zero. A life cycle perspective is required in order to assess all the different environmental impacts related to biomass exploitation and usage, in particular when dedicated sources are used. This study points out the importance of including the results of a Life Cycle Assessment (LCA) early in the design of new bio-based products, to identify the stage of the value chain with the greatest hotspots and set proper eco-design strategies. At the same time, the use of the LCA results may support purchasing activities through comparing products with different burdens. In this manuscript, a focus on land compartment is carried out, given its relevance to the cultivation phase. Five analysis methods are selected for further description. Three are classified as multi-impact approach methodologies (ReCiPe 2016, IMPACT World + and EF 3.0) since they are able to translate mass and energy balances into several impact categories at the same time, not only those on land comparts which are also included. In addition, the LANCA® model and the True pricing method for agri-food products are discussed, underlining the importance of their usage when a detailed review of the impact on soil is necessary (e.g., during an environmental impact assessment). They are compared in this paper, underlining the main differences and potential fields of application.","PeriodicalId":22103,"journal":{"name":"Sustainable Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87330531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Microfluidics for Polymer Microparticles: Opinion on Sustainability and Scalability 聚合物微粒的微流体:对可持续性和可扩展性的看法

Sustainable Chemistry Pub Date : 2023-04-10 DOI: 10.3390/suschem4020013

Hassan El Itawi, S. Fadlallah, P. Perré, F. Allais

{"title":"Microfluidics for Polymer Microparticles: Opinion on Sustainability and Scalability","authors":"Hassan El Itawi, S. Fadlallah, P. Perré, F. Allais","doi":"10.3390/suschem4020013","DOIUrl":"https://doi.org/10.3390/suschem4020013","url":null,"abstract":"The microfluidic production of simple (microspheres) and core–shell (microcapsules) polymer microparticles, often called microencapsulation, has been the scope of several research works since the 1980s. It is a fast, thrifty, and efficient process because of its controlled properties, tuneability, and yield, which can reach 100%. However, the question of its greenness, sustainability, and scalability remains unclear, and more awareness/education is required in this field. The sustainability of production processes using microfluidic techniques can be realized/discussed based on three pillars: (i) waste generation, (ii) the solvents employed, and (iii) raw materials. On the other hand, although the scaling-up of these processes was reported on in several papers as procedures in which hundreds or thousands of microfluidic chips are set in parallel, the sustainability of this scale-up has not been addressed to our knowledge. This opinion paper highlights the advantages of microfluidic encapsulation processes, their greenness according to the above-mentioned pillars, (i–iii) and the necessary considerations to scale them up while preserving their sustainability.","PeriodicalId":22103,"journal":{"name":"Sustainable Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76305974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Generation of Spherical Microparticles of Moringa Leaves through a Supercritical Antisolvent Extraction Process 超临界抗溶剂萃取工艺制备辣木叶球形微颗粒

Sustainable Chemistry Pub Date : 2023-03-31 DOI: 10.3390/suschem4020011

A. Montes, D. Valor, C. Pereyra, E. Martínez de la Ossa

引用次数: 0

Cyrene™, a Sustainable Solution for Graffiti Paint Removal Cyrene™，涂鸦涂料去除的可持续解决方案

Sustainable Chemistry Pub Date : 2023-03-31 DOI: 10.3390/suschem4020012

Roxana A. Milescu, Thomas J. Farmer, James Sherwood, Con R. McElroy, James H. Clark

{"title":"Cyrene™, a Sustainable Solution for Graffiti Paint Removal","authors":"Roxana A. Milescu, Thomas J. Farmer, James Sherwood, Con R. McElroy, James H. Clark","doi":"10.3390/suschem4020012","DOIUrl":"https://doi.org/10.3390/suschem4020012","url":null,"abstract":"Graffiti can create detrimental aesthetic and environmental damage to city infrastructure and cultural heritage and requires improved removal methods. Incumbent laser, mechanical and chemical removal techniques are often not effective, are expensive or damage the substrate. Solvents are generally hazardous and not always effective because of the insolubility of the graffiti paint. This study proposes a simple strategy for safe and effective graffiti removal, using the bio-based, non-toxic and biodegradable solvent dihydrolevoglucosenone (Cyrene™). The results showed that the type of substrate influenced the cleaning performance; in benchmark studies a non-porous substrate was easy to clean, while porous ceramic showed the presence of residual paint and yellowing when the conventional polar aprotic solvents were used. Cyrene, however, showed good removability of graffiti paint from both glazed and porous substrates, with little paint remaining in the pores of ceramic tiles. The paint suffered a reversible change in colour and a selective solubility of its components when using N-methyl-2-pyrrolidone; no changes occurred when Cyrene was used. While N-methyl-2-pyrrolidone and N,N′-dimethylformamide were only effective when neat, a Cyrene–water mixture showed some cleaning results. The performance of Cyrene was validated with Hansen solubility parameters and represents a greener and more sustainable solvent for paint removal.","PeriodicalId":22103,"journal":{"name":"Sustainable Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135822131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2