RSC Applied Interfaces最新文献

{"title":"Engineering Pt–CeO2 interfaces for reverse water-gas shift (RWGS) reaction†","authors":"Kauê G. G. dos Santos, Alisson S. Thill, Livia P. Matte, Gustavo Z. Girotto, Mateus V. Costa, Denise R. Bohn, Fernanda Poletto and Fabiano Bernardi","doi":"10.1039/D4LF00064A","DOIUrl":"https://doi.org/10.1039/D4LF00064A","url":null,"abstract":"<p >Nowadays, Pt–CeO<small>₂</small> interfaces are very popular in many applications. In particular, this system is widely used in catalysis for the reverse water gas-shift (RWGS) reaction aiming to stop the dangerous advancement of the global warming effect. Nevertheless, some complex atomic events occurring at this interface are still unclear. In this work, superhydrophobic Pt–CeO<small>₂</small> nanoparticles were used in the RWGS reaction aiming to shift the equilibrium of the RWGS reaction towards the formation of CO. It was demonstrated that this sample presents a highly reducible CeO<small>₂</small> surface and an easy tunability of the O vacancy population, which is the main active site of metal oxides in catalysis. Consequently, the Pt–CeO<small>₂</small> superhydrophobic sample presents improved performance towards CO formation in the RWGS reaction. During the RWGS reaction, the Pt nanoparticles suffer from the strong metal–support interaction (SMSI) effect that may hinder the catalytically active sites but, even so, the superhydrophobic Pt–CeO<small>₂</small> nanoparticles are active in the RWGS reaction. It opens new frontiers in the engineering of active superhydrophobic Pt–CeO<small>₂</small> interfaces with tunable O vacancy population.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 5","pages":" 992-1000"},"PeriodicalIF":0.0,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00064a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142165138","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}

{"title":"Utilizing pi-peptide supramolecular polymers to template growth of hybrid organic–inorganic electronic materials†","authors":"Grant E. K. Hall, Taein Lee, John D. Tovar and Howard E. Katz","doi":"10.1039/D4LF00087K","DOIUrl":"https://doi.org/10.1039/D4LF00087K","url":null,"abstract":"<p >We investigated and compared the growth of three different minerals (KCl, CsCl, and CdS) templated by assemblies of perylene diimide (PDI)-based π-peptides with varying amino acid sequences. KCl and CsCl were chosen since they are single cation-anion minerals with very different cationic radii. Further, KCl is an insulator while CsCl has low ionic conductivity. CdS is a more optoelectronically active material that serves as a prototype for minerals that could form electronically conductive or potentially photoconductive pathways. KCl and CsCl morphologies were dependent on the templating peptide, with varying degrees of density and branching of mineral deposits and polymorphism shown in X-ray diffractograms. The mineralization also affected peptide absorbance spectra, indicating different aggregate electronic arrangements. While KCl under conditions used here formed thick, electrically insulating deposits, CsCl deposits showed peptide-dependent ionic conductivity. CdS templated by one of the π-peptide materials showed less definitive templating, but morphology that was more directional than the non-templated case. Substantial electronic conductivity was measured for this latter case. These results indicate the potential to utilize π-peptide templated growth of minerals to form controllable hybrid organic/inorganic structures for multiple electrical applications.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 5","pages":" 944-957"},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00087k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142165135","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}

{"title":"A ‘tortuous path’ and ‘protective oxide layer’ work in tandem in unique corrosion-resistant polyetherimide coatings","authors":"Kuntal Sarkar, Amerjit, Rishi Raj, Tapan Kumar Rout and Suryasarathi Bose","doi":"10.1039/D4LF00028E","DOIUrl":"https://doi.org/10.1039/D4LF00028E","url":null,"abstract":"<p >Galvannealed steels are mainly surface treated <em>via</em> chromating and phosphating processes to make their surface more corrosion-resistant and enhance paint adhesion. However, environmental regulations have put a control on the usage of these pretreatments, and these need to be replaced by environment-friendly pretreatment chemicals having similar range of properties. In this regard, a unique polyetherimide-based coating system is proposed herein containing a di-anhydride molecule and two di-amine molecules, which can avoid harsh chromating, phosphating and silane-based pre-treatments and offers properties that are not achieved using conventional routes. CNTs are added to a base pre-polymer (polyamic acid) to offer a tortuous path, whereas polyaniline-coated ceria (PANI@CeO<small>₂</small>) is added, prior to imidization, to offer a protective oxide layer, which worked in tandem to offer a corrosion-resistant coating. The base coating shows the lowest corrosion resistance owing to the higher porosity, presence of microcracks and a combination of both the nanoparticles offering higher noble open circuit potentials (OCPs) at all immersion times, indicating prolonged coating stability and less tendency to corrosion. In addition, electrochemical impedance spectroscopy (EIS) study of both CNT and PANI@CeO<small>₂</small> reinforced composite coating shows the highest corrosion resistance and low water uptake with respect to other coating systems evaluated here. The highest corrosion resistance in the composite coatings may be due to the low coating porosity, absence of microcracks, tortuous pathways for corrosive ion movement and ennobling effect due to the presence of PANI@CeO<small>₂</small> and CNTs.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 5","pages":" 958-976"},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00028e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142165136","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}

{"title":"Segregation in epoxy/amine systems on iron oxide surfaces†","authors":"Kieran Harris, Charlie R. Wand, Peter Visser and Flor R. Siperstein","doi":"10.1039/D4LF00042K","DOIUrl":"https://doi.org/10.1039/D4LF00042K","url":null,"abstract":"<p >Segregation of epoxy/amine precursors at solid interfaces can have important consequences in the formation of thin, epoxy–amine films. In this work we study the segregation of a model epoxy molecule (DGEBA) and an amine (MXDA) on different iron oxide surfaces. We found that the extent of segregation can depend on the nature of the solid surface, and that segregation on goethite surfaces is more pronounced than on hematite and magnetite, regardless of the composition of the film. Detailed analysis of the interface shows that the contact layer is not well mixed and regions rich in amine and rich in epoxy molecules can be identified. Furthermore, we suggest that the larger segregation observed in goethite is a consequence of the way the molecules pack on the surface, with stricter binding sites observed at the goethite surface.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 4","pages":" 812-820"},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00042k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141561102","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}

{"title":"Energetic description of the liquid–vapor interface of water with organic coating molecules","authors":"Julien Devémy, Alain Dequidt, Pascal Renard, Laurent Deguillaume and Patrice Malfreyt","doi":"10.1039/D4LF00037D","DOIUrl":"https://doi.org/10.1039/D4LF00037D","url":null,"abstract":"<p > <em>In situ</em> measurements revealed the presence of a myriad of organic chemical compounds in cloud droplets. Among them, a significant fraction is composed of polar or amphiphilic compounds and these compounds have been detected in various contrasting environments (marine, biogenic, urban areas). This raises a simple question of their spatial positioning in a cloud droplet. Previous study suggested they can form an organic surface coating at the air/water interface, thus potentially perturbing the exchanges of molecules between the gaseous and aqueous phases. The present work aims at investigating the properties of the water surface at the molecular scale by selecting 4 organic compounds representative of the molecular diversity observed in clouds. Two fatty acids (<em>cis</em>-pinonic acid and nonanoic acid) commonly detected in the atmosphere (aerosol particles and cloud waters) were chosen. Levoglucosan is an anhydro sugar ubiquitous in the air and well-known as a tracer of biomass burning. Finally, oxalic acid, one of the most abundant di-acids in the atmosphere, has been chosen. Its ability to form a coating film was analyzed through the calculation of a free energy profile along the direction normal to the surface of water. Nonanoic and <em>cis</em>-pinonic acids have been shown to partition to the surface, in contrast to levoglucosan and oxalic acid that remain in water. The surface tension of the liquid–vapor (LV) interface of water was calculated as a function of surface excess of nonanoic and <em>cis</em>-pinonic acids. We completed this study by examining how the presence of a hydrophobic monolayer of nonanoic molecules at the surface of water can change the behavior of a hydrophilic molecules such as levoglucosan at the interface. Our results clearly indicate that levoglucosan molecules in the gas phase can be adsorbed on this organic layer. Results from this study are of particular interest for atmospheric research since by confirming the concept of organic film formation at the air/droplet interface, they lead to questions about possible heterogeneous reactivity phenomena and potential modification of compound exchanges between the gas and aqueous phases.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 4","pages":" 800-811"},"PeriodicalIF":0.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00037d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141561101","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}

{"title":"High-performance functionalized anthracene organic supercapacitors†","authors":"Sudipta Biswas, Rajendran Manikandan, Nitzan Shauloff, Shubhra Kanti Bhaumik and Raz Jelinek","doi":"10.1039/D4LF00076E","DOIUrl":"https://doi.org/10.1039/D4LF00076E","url":null,"abstract":"<p >Organic supercapacitors have attracted significant interest as promising energy storage vehicles due to their favorable electrochemical properties, synthetic versatility, low cost, and environmental friendliness. We constructed supercapacitor electrodes comprising anthracene derivatives as the core component. Specifically, anthracene linked to functionalized ethylene displaying different electron acceptors endows the electrodes with tunable energy gaps and concomitant redox potentials. The conjugated anthracene units in such systems furnished the structural framework <em>via</em> adopting a crystalline nanorod organization <em>via</em> π–π stacking, while the delocalized electrons likely participated in the reversible redox reactions contributing to electrode pseudocapacitance. Asymmetric supercapacitors consisting of <em>tert</em>-butyl-ethylene-ketone-anthracene/polyaniline as the cathode were constructed, featuring excellent electrochemical performance. Specifically, the asymmetric device using an ionic liquid electrolyte displayed a broad voltage window, high cycling stability, and an energy density of 30 W h kg<small>⁻¹</small> at a power density of 620 W kg<small>⁻¹</small>. Overall, we show that anthracene derivatives provide powerful redox-tunable electrode building blocks, expanding the molecular toolbox for organic supercapacitors.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 5","pages":" 920-927"},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00076e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142165124","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}

{"title":"Artificial nociceptor using an Ag/Ag2S/Pt atomic switch†","authors":"Anwesha Mahapatra and Alpana Nayak","doi":"10.1039/D4LF00035H","DOIUrl":"https://doi.org/10.1039/D4LF00035H","url":null,"abstract":"<p >Pain is an essential sensation for any living organism to thrive in the everchanging environment, and hence an important aspect to be added to the capabilities of realistic machine intelligence. Here we present an Ag/Ag<small>₂</small>S/Pt atomic switch as an artificial nociceptor whose voltage dependent conductance modulation is similar to that of a stimuli dependent pain sensation. Different rate limiting processes for the voltage dependent switching time illustrate its analogy to varying response times for different types of nociceptors. Distinct pain levels have been encoded in terms of quantized conductance, which is associated with opened NMDAR channels of the nociceptor network. This work emphasizes the signal dependent conductance modulation of the Ag/Ag<small>₂</small>S/Pt atomic switch in order to mimic the biological pathway for pain sensation that will advance the defence mechanism in neuromorphic devices.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 4","pages":" 711-718"},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00035h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141561070","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}

{"title":"Prolonging the n-type conduction of thermoelectric carbon nanotubes exposed to warm air by mixing hydrated water into the adsorbed dopant layers composed of Li+-receptor molecules†","authors":"Shinichi Hata, Chika Nakagawa, Ayako Taketoshi, Toru Murayama, Tamao Ishida, Yukou Du, Yukihide Shiraishi and Naoki Toshima","doi":"10.1039/D3LF00239J","DOIUrl":"https://doi.org/10.1039/D3LF00239J","url":null,"abstract":"<p >Mixing hydrated water into the dopant layer prolongs the operational stability of n-type carbon nanotubes (CNTs). Supramolecular interactions with Li<small>⁺</small> increase the water adsorption of the dopant layer, hinder atmospheric oxygen from entering the CNT structure, and extend the n-type lifetime at 373 K from 6 to 16 d.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 3","pages":" 430-434"},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d3lf00239j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140919187","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}

{"title":"Interface-modulated morphological transition of biodegradable poly(ε-caprolactone) crystals†","authors":"Bingbing Li and Alan R. Esker","doi":"10.1039/D4LF00073K","DOIUrl":"https://doi.org/10.1039/D4LF00073K","url":null,"abstract":"<p >Poly(ε-caprolactone)(PCL)-based blends exhibit immense potential for the design of various environmentally friendly disposable or short-lived materials. The degradation of PCL components is determined by their crystallinity and crystal morphology, which is strongly correlated to the laboratory or industrial processing conditions of the blends. By using PCL/poly(<em>t</em>-butyl acrylate) (P<em>t</em>BA) mixed Langmuir monolayers as a model system, this study reports a striking interface-modulated morphological transition of PCL crystals, from highly branched symmetric dendrites, to six-arm dendrites, four-arm dendrites, seaweed-like crystals and distorted rectangular crystals. The results further demonstrate that the PCL chain folding reacts quickly to the change in the degree of undercooling (<em>i.e.</em>, surface pressure), which controls the overall crystal morphologies through the interplay of the diffusion coefficient, surface tension, and surface tension anisotropy.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 4","pages":" 671-676"},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00073k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141561098","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}

{"title":"Efficient peroxymonosulfate activation by Fe–BiOCl hollow microspheres for carbamazepine removal†","authors":"Liyong Ding, Xuejuan Huang, Yuqin Liu, Qingqing Jiang and Juncheng Hu","doi":"10.1039/D4LF00051J","DOIUrl":"https://doi.org/10.1039/D4LF00051J","url":null,"abstract":"<p >The preparation of highly effective and stable photocatalysts for visible-light-driven activation of peroxymonosulfate (PMS) to remove refractory organic contaminants is an attractive study. Herein, a series of Fe–BiOCl photocatalysts with a hollow structure were prepared through a regular one-step solvothermal approach and applied to activate PMS for carbamazepine (CBZ) degradation. Benefiting from the synergistic effect of photocatalysis and PMS activation, the 3% Fe–BiOCl/PMS system exhibits a higher CBZ removal ability under visible irradiation, with the corresponding apparent rate constant (<em>k</em> = 0.0449 min<small>⁻¹</small>) being 12 times higher than that of individual BiOCl (<em>k</em> = 0.0037 min<small>⁻¹</small>). Further experiments verify that the doping of Fe and the construction of the hollow structure of BiOCl can improve light absorption and utilization efficiency. More importantly, the introduced Fe<small>³⁺</small> can facilitate the fast separation of photogenerated carriers and the activation of PMS. Capture experiments and EPR tests demonstrate that multiple active species (OH˙, SO<small>₄</small>˙<small>⁻</small>, <small>¹</small>O<small>₂</small> and O<small>₂</small>˙<small>⁻</small>) participate in the PMS activation for the CBZ degradation process, with SO<small>₄</small>˙<small>⁻</small> being the primary active species. Furthermore, the effects of photocatalyst amount, PMS concentration, initial solution pH, and co-existing anions on CBZ removal were explored. A possible mechanism for the photocatalytic removal of CBZ is also proposed. In addition, the 3% Fe-BOC displays outstanding photocatalytic activity over four consecutive cycles, indicating that it could be a reliable PMS activator for CBZ elimination in practical application. This work provides new ideas for constructing efficient and stable BiOCl-based catalytic systems for visible-light-driven removal of emerging contaminants.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 4","pages":" 779-789"},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lf/d4lf00051j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141561078","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}