International Conference EcoBalt 2023 "Chemicals & Environment"最新文献

{"title":"Synthesis of Molybdenum Oxide and Sulfide Nanoparticles at Room Temperature Using Organometallic Approach","authors":"M. Jakoobi, G. Carnide, Laure Vendier, Christian Bijani, A.-F. Mingotaud, Richard Clergereaux, Myrtil L. Kahn","doi":"10.3390/proceedings2023092047","DOIUrl":"https://doi.org/10.3390/proceedings2023092047","url":null,"abstract":"","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"2016 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139239635","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}

{"title":"Estimation of the Share of Total Nutrient Load from the Territory of Estonia along the Narva River to the Baltic Sea","authors":"Alvina Reihan, Kati Roosalu","doi":"10.3390/proceedings2023092044","DOIUrl":"https://doi.org/10.3390/proceedings2023092044","url":null,"abstract":"A comparison of the total","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"408 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139240183","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}

{"title":"Droplet-Based Technology for Studying the Phenotypic Effect of Microplastics on Antimicrobial Resistance","authors":"Simona Bartkova, Fenella Lucia Sulp, Immanuel Sanka, P. Pata, O. Scheler","doi":"10.3390/proceedings2023092041","DOIUrl":"https://doi.org/10.3390/proceedings2023092041","url":null,"abstract":"","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139238419","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}

{"title":"The Interaction between Extracellular Polymeric Substances from Diatom Cyclotella meneghiniana and Citrate-Coated Silver Nanoparticles","authors":"Rocco Gasco, Isabelle A. M. Worms, V. Slaveykova","doi":"10.3390/proceedings2023092048","DOIUrl":"https://doi.org/10.3390/proceedings2023092048","url":null,"abstract":"derived from the diatom Cyclotella meneghiniana , and, in particular, their colloidal stability and transformations. To this end, a combination of different state-of-the-art techniques was employed to characterize the AgNPs-EPS interactions: Asymmetric Flow Field-Flow Fractionation (AF4) coupled with ICP-MS, Dynamic Light Scattering (DLS), Zeta Potential, and Surface Plasmon Resonance (SPR) absorbance spectroscopy. The changes in the size distribution, surface properties, and stability of Cit-AgNPs (4 mg/L) in the presence of various concentrations of EPS (130, 65, 32.5, and 13 mg C/L) were studied in both short-term (0–2 h) and long-term (72 h) experiments. The results showed that EPS stabilizes Cit-AgNPs, presumably through the formation of an ecocorona. The interaction occurred rapidly in the short term, leading to long-term stabilization, as revealed by the changes in the SPR-UV-Vis spectrum, characterized by the appearance of a typical shoulder associated with AgNPs’ aggregation/agglomeration and alterations in hydrodynamic diameter. In the presence of EPS, the surface charge (zeta potential) of the Cit-AgNPs also shifted towards values similar to those of EPS alone, indicating an interaction. The EPS reduced the dissolution of Cit-AgNPs after 24 h. AF4-MD-ICP-MS provides relevant information with respect to DLS and UV-Vis spectroscopy, confirming the change in size of the Cit-AgNPs, the stabilization in the long term, and the interaction with the EPS. Taken together, the results of this study demonstrate that the EPS derived from the diatom Cyclotella meneghiniana modifies the surface properties and stability of 20 nm Cit-AgNPs. Therefore, such interactions have to be taken into consideration for predicting the fate and effects of Cit-AgNPs in the environment.","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"35 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139240312","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}

{"title":"Hazard Evaluation of Novel Plasticizer, Di(2-Propylheptyl) Phthalate, to Aquatic Ecosystems","authors":"Anastasija Petrova, A. Lukjanova, I. Blinova, H. Vija, M. Heinlaan","doi":"10.3390/proceedings92010045","DOIUrl":"https://doi.org/10.3390/proceedings92010045","url":null,"abstract":"","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"112 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139239142","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}

{"title":"Plasma Electrolytic Oxidation Synthesis of Heterostructured TiO2 for Photoanode Applications","authors":"R. Levinas, V. Pakštas, A. Selskis, Tomas Murauskas, Roman Viter, A. Jagminienė, I. Stankevičienė, E. Norkus","doi":"10.3390/proceedings2023092051","DOIUrl":"https://doi.org/10.3390/proceedings2023092051","url":null,"abstract":": In the renewable energy field, the conversion of solar light into electrical or chemical energy is considered essential to moving towards a truly green energy economy. Solar energy can be harnessed not just through generating electricity with photovoltaic cells but also by driving photoelectrochemical (PEC) reactions such as water splitting or pollutant oxidation. In this study, TiO 2 films were synthesized electrochemically through a procedure called plasma electrolytic oxidation (PEO). Under specific conditions, as the Ti substrate dissolves and the oxide film grows, electron discharges occur across the film, and this ionizes both the oxide and some amount of electrolyte that had been in contact with it. The mixture then cools, leaving a macroporous TiO 2 structure. What is particularly interesting for PEC applications is that the films can be crystalline and doped after synthesis. XRD analysis revealed that a TiO 2 film that had been obtained at a voltage of 200 V had an anatase crystal structure. In addition, during ionization and cooling, ions from the solution can be incorporated into the film. By adding 0.1 M Cu 2 SO 4 into the synthesis electrolyte, we were able to incorporate Cu into the films, as proven EDX and XPS. The TiO 2 and heterostructured films showed good PEC water-splitting activity and stability in alkaline media when illuminated with 365 nm LED light. It was found that the photocurrent obtained depends on the synthesis voltage and that the heterostructured films would generate ~2 times larger photocurrents. In addition, further surface functionalization (e.g., with Au) was investigated. Electron–hole recombination was evaluated using an advanced non-stationary photoelectrochemical technique—intensity-modulated photocurrent spectroscopy (IMPS). Generally, films have very little recombination and only at lower overpotentials up to ~1 V. Overall, the synthesis of oxide films through PEO may provide an efficient alternative to obtaining crystalline films via annealing, and various heterostructures can be created simply by modifying synthesis conditions.","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"105 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139241109","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}

{"title":"From Organometallic Chemistry to Multifunctional Nanoparticle-Based Devices for Gas Detection and Degradation of Air Pollutants","authors":"M. Jakoobi, K. Fajerwerg, Myrtil L. Kahn","doi":"10.3390/proceedings2023092042","DOIUrl":"https://doi.org/10.3390/proceedings2023092042","url":null,"abstract":"and nanomaterials with unprecedented properties, with the aim of developing functional and innovative solutions to societal challenges (Figure 1). To achieve this, we are applying an organometallic approach for the synthesis of well-defined nanoparticles (NPs) and nanomaterials [1]. This bottom-up approach allows control of the NPs synthesis (size, shape, colloidal stability) on a molecular level with the help of cleverly designed starting molecular precursor(s), under mild reaction conditions and in safe-by-design approaches [2]. The presentation will focus on our team’s research related to the synthesis and properties of NPs and nanomaterials, their implementation into devices for either gas detection (i","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"146 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139239913","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}

{"title":"Silver–Chitosan Nanocomposites for Biomedical Application: Design, Synthesis and Antimicrobial Efficiency","authors":"K. Kasemets, Jüri Laanoja, M. Sihtmäe, H. Vija, I. Kurvet, Maarja Otsus, A. Kahru","doi":"10.3390/proceedings2023092040","DOIUrl":"https://doi.org/10.3390/proceedings2023092040","url":null,"abstract":"","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"59 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139241706","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}

{"title":"Interactions of Diatom Cyclotella meneghiniana and Citrate Coated Silver Nanoparticles","authors":"Arin Kantarciyan, Inés Segovia-Campos, V. Slaveykova","doi":"10.3390/proceedings2023092049","DOIUrl":"https://doi.org/10.3390/proceedings2023092049","url":null,"abstract":"","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"71 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139239505","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}

{"title":"Spray-Pyrolysis Synthesised TiO2 Thin Films for Photocatalytic Air Treatment from Volatile Organic Compounds","authors":"Jekaterina Sydorenko, M. Krunks, Avro Mere, M. Krichevskaya, I. Oja Acik","doi":"10.3390/proceedings2023092037","DOIUrl":"https://doi.org/10.3390/proceedings2023092037","url":null,"abstract":"","PeriodicalId":504549,"journal":{"name":"International Conference EcoBalt 2023 \"Chemicals & Environment\"","volume":"3 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139242750","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}