RSC Advances最新文献

{"title":"Supercapacitors with cotton shell-derived activated carbons and porous polymer electrolyte films†","authors":"Saurabh Singh, Yulin Zhang, S. A. Hashmi and Fuqian Yang","doi":"10.1039/D5RA00696A","DOIUrl":"https://doi.org/10.1039/D5RA00696A","url":null,"abstract":"<p >Some of the well-known challenges in the field of supercapacitors (SCs), or more specifically, electrical double-layer capacitors (EDLCs), such as low energy density and high cost, have proven to be major barriers to their widespread market success despite having some excellent electrochemical merits such as high-power density and good cyclic stability. In this work, efforts have been made to overcome these gaps and eventually enhance the performance of EDLCs <em>via</em> a cost-effective and eco-friendly approach. To fabricate these EDLCs, a bio-waste, namely, cotton-shell-derived activated carbons (ZnACs) (activated with ZnCl<small>₂</small>), was used in a mass ratio of 1 : 2 for cotton shell to ZnCl<small>₂</small>. This resulted in a large BET surface area of 2031 m<small>²</small> g<small>⁻¹</small> and a hierarchical porous structure, which contributed to faster diffusion of electrolyte ions. These two features ultimately resulted in a high specific capacitance of 247.82 F g<small>⁻¹</small> at a current density of 0.52 A g<small>⁻¹</small> of the cell with a porous polymer electrolyte (PPE) film made from polycaprolactone and poly (vinylidene fluoride-<em>co</em>-hexafluoropropylene), which offered the advantages of a wider potential window (∼7.22 V <em>vs.</em> Ag) and high conductivity (1.51 mS cm<small>⁻¹</small>). A comparison was then made with another cell using commercial activated carbon powder and the same PPE film. The ZnAC-based EDLC cells showed better performances, such as a high energy density (∼22.58 W h kg<small>⁻¹</small>) and high Coulombic efficiency (∼83.6%) without compromising the effective power density (∼0.42 kW kg<small>⁻¹</small>). EDLC cells exhibited only ∼3% capacitance fading at the end of 10 000 charge–discharge cycles. Thus, the incorporation of cotton shell-biowaste resulted in a two-way advantage of reducing environmental pollution caused by their large-scale burning practices and delivering substantial electrochemical performance, ultimately opening new avenues in the field of green energy technology.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9787-9800"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00696a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of the in situ synthesis of vanadium oxide nanowires on the electrical properties of hybrid nanocomposites based on synthetic carbon matrices","authors":"H. Jeidi, W. Ahmed, I. Najeh, M. Erouel, H. L. Gomes, M. Chelly, G. Neri and L. El Mir","doi":"10.1039/D4RA07931K","DOIUrl":"https://doi.org/10.1039/D4RA07931K","url":null,"abstract":"<p >Organic–inorganic nanocomposites (RF/VOX) were prepared by sol–gel method coupled with pyrolysis treatment using a resorcinol–formaldehyde carbon matrix enriched with vanadium nanoparticles. The structural properties of the final product were characterised using X-ray diffraction, revealing the transformation of the incorporated vanadium oxide from the V<small>₂</small>O<small>₅</small> phase to V<small>₂</small>O<small>₃</small> due to the pyrolysis temperature in a reductive atmosphere, alongside the formation of vanadium carbide (V<small>₈</small>C<small>₇</small>) in the sample treated at 1000 °C. The X-ray analysis also indicated the presence of a graphite phase across all samples. Microscopic examinations showed macroporous carbon structures enriched with vanadium oxide in the form of nanowires. These structural features significantly influenced the materials' electrical properties. At low frequencies, the AC conductance indicated a thermally activated process in the RF/VOX-625 and RF/VOX-650 samples pyrolysed <em>y</em> at 625 °C and 650 °C, respectively. RF/VOX-625 displayed semiconductor behaviour at high frequencies, while RF/VOX-650 transited from semiconductor behaviour to metal one at 200 K. The changes in the exponent <em>s</em> suggested that the CBH model effectively describes the AC conduction mechanism. Impedance analysis highlighted a relaxation phenomenon, and Nyquist plots illustrated the contribution of grain and grain boundaries in RF/VOX-625 and RF/VOX-650 at low temperatures. Furthermore, these plots indicated that in RF/VOX-650, the grain effect became predominant beyond 200 K. Incorporating vanadium oxide nanoparticles into the polymer matrix resulted in distinct physical properties and behaviours compared to the original organic matrix, allowing this material to be tested in various applications including negatronic devices and electronic components.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 10022-10036"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra07931k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in mercury ion sensing using BODIPY-based compounds: a sexennial update","authors":"Supriya Routray, Subhadeep Acharya, Laxmipriya Nayak, Simran Pattnaik and Rashmirekha Satapathy","doi":"10.1039/D5RA01232E","DOIUrl":"https://doi.org/10.1039/D5RA01232E","url":null,"abstract":"<p >Pollution from mercury ions (Hg<small>²⁺</small>) continues to pose a significant threat to the environment and public health because of its extreme toxicity and bioaccumulative nature. BODIPY-based compounds are emerging as strong candidates for creating selective and sensitive chemosensors for mercury ion detection. Their structural tunability facilitates the introduction of various functional groups, improving their binding affinity and specificity toward mercury ions. This review elucidates various sensing mechanisms and provides comprehensive insights into the performance of these sensors, particularly with regard to selectivity, sensitivity, and detection limits. The synthetic routes for synthesizing the chemosensors are mentioned in detail. Given their reliability and flexibility, BODIPY-based sensors are poised to make significant contributions in the fields of both sensors and analytical chemistry.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9910-9951"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra01232e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Yb-Doped CuY modulates Cu electronic structures for efficient oxidation of anisole to guaiacol†","authors":"Hanghang Zhang and Gang Xu","doi":"10.1039/D5RA00463B","DOIUrl":"https://doi.org/10.1039/D5RA00463B","url":null,"abstract":"<p >Copper-based catalysts are widely employed in the catalytic conversion of aromatic compounds to phenolic derivatives. However, single-atom copper catalysts often exhibit limited reactivity and stability. In this study, we addressed these limitations by loading Cu onto NaY zeolite <em>via</em> ion exchange to synthesize a CuY catalyst, followed by Yb modification. By optimizing the Yb content, we significantly enhanced the anisole conversion rate and guaiacol yield. Catalyst characterization revealed that Yb species modulate the electronic structure of copper, favoring the formation of abundant Cu<small>⁺</small> species. This electronic modification promotes the catalytic generation of hydroxyl radicals (˙OH) from hydrogen peroxide, thereby accelerating the reaction kinetics. Furthermore, Yb incorporation into CuY induced the formation of oxygen vacancies, which improved hydroxyl radical adsorption and facilitated the generation of metal-oxo species. These synergistic effects collectively increased the reaction's overall conversion efficiency. Under optimized reaction conditions, the Yb/CuY catalyst achieved an anisole conversion of 56.2% and an <em>ortho</em>-selectivity of 74.6%, clearly outperforming previous reports.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9899-9909"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00463b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ti3C2/CuWO4/Pt nanozyme: photothermal-enhanced chemodynamic antibacterial effects induced by NIR†","authors":"Simin Yuan, Lianyuan Ge, Yi Li, Xiaohong Wang, Zhongyuan Liu, Yang Cao and Linglin Yang","doi":"10.1039/D4RA08791G","DOIUrl":"https://doi.org/10.1039/D4RA08791G","url":null,"abstract":"<p >With the growing issue of antibiotic resistance, it has become increasingly crucial to develop highly efficient antimicrobial materials. While the single-component nanozyme systems exhibited some catalytic activity, their efficiency remains suboptimal. This study presents a Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt hybrid nanozyme composed of photothermal agents and nanozymes, which leverages the photothermal effect to enhance nanozyme activity and achieve efficient antimicrobial effects. The composite material exhibited peroxidase (POD)-like catalytic activity, effectively converting hydrogen peroxide (H<small>₂</small>O<small>₂</small>) into hydroxyl radicals (·OH). Meanwhile, the Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt material demonstrated high photothermal conversion ability, which not only promoted the generation of ·OH under near-infrared (NIR) light irradiation, but also facilitated copper (Cu<small>²⁺</small>) ions release from the CuWO<small>₄</small> nanozyme, thereby further augmenting its catalytic activity. After 4 to 5 min of light irradiation, the Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt nanozyme exhibited significant antimicrobial performance against both <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>). In summary, this work presents a Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt nanoplatform that utilizes the photothermal effect to enhance the chemodynamic antimicrobial activity, showcasing its potential applications in antibiotic-free antimicrobial fields.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9985-9996"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08791g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cu-doped and 2-propylimidazole-modified nanoceria (CeO2@Cu-PrIm) oxidase-like nanozyme for total antioxidant capacity assay of fruits†","authors":"Zhendong Fu, Jiahe Qiu, Ping Gong, Danhong Zhang and Liping Wang","doi":"10.1039/D4RA07858F","DOIUrl":"https://doi.org/10.1039/D4RA07858F","url":null,"abstract":"<p >The precise and sensitive quantification of total antioxidant capacity (TAC) is indispensable for evaluating the quality of foods rich in antioxidants. In this investigation, a novel nanozyme exhibiting robust oxidase activity was synthesized <em>via</em> a sonochemical doping process utilizing copper ions and the modification of 2-propylimidazole onto nanoceria. Subsequently, a CeO2@Cu-PrIm/ox-TMB assay system was successfully formulated, furnishing a practical and highly sensitive analytical tool for TAC determination. The colorimetric sensor exhibited a linear response over a concentration range of 1 μM to 70 μM, accompanied by a limit of detection (LOD) of 1.26 μM under meticulously screened conditions. This assay displayed substantial practical utility for TAC analysis in fruits, attributed to its exceptional accuracy and selectivity. This research endeavor may offer a novel direction for the design of nanozymes and colorimetric biosensors possessing heightened oxidase activity, thereby advancing the field of analytical chemistry and food science.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9997-10004"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra07858f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Direct detection of lymphoma cancer cells based on impedimetric immunosensors","authors":"Asghar Barani Beiranvand, Fariba Tadayon and Hasan Bagheri","doi":"10.1039/D4RA07801B","DOIUrl":"https://doi.org/10.1039/D4RA07801B","url":null,"abstract":"<p >This study focuses on the creation and application of an advanced impedimetric immunosensor designed for the sensitive detection of lymphoma cancer cells. The sensor was developed by modifying a glassy carbon electrode (GCE) with gold nanoparticles (AuNPs) and 3,3′-dithiodipropionic acid di(<em>N</em>-hydroxysuccinimide ester) boronic acid (AuNPs@DTSP–BA), followed by the attachment of rituximab monoclonal antibody. Incorporating the boronic acid (BA) component enabled effective oriented immobilization of the antibody, thereby improving the performance of the biosensor. Various spectroscopic techniques were used to characterize the immunosensor. The developed immunosensor demonstrated the ability to detect lymphoma cancer cells across a wide linear range of 100 to 50 000 cells per mL, with a detection sensitivity of 64 cells per mL.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9884-9890"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra07801b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PDMS biointerfaces featuring honeycomb-like well microtextures designed for a pro-healing environment","authors":"Andreea Mariana Negrescu, Simona Nistorescu, Anca Bonciu, Laurentiu Rusen, Nicoleta Dumitrescu, Iuliana Urzica, Antoniu Moldovan, Patrick Hoffmann, Gratiela Gradisteanu Pircalaboiu, Anisoara Cimpean and Valentina Dinca","doi":"10.1039/D5RA00063G","DOIUrl":"https://doi.org/10.1039/D5RA00063G","url":null,"abstract":"<p >Even today, the reduction of complications following breast implant surgery together with the enhancement of implant integration and performance through the modulation of the foreign body response (FBR), remains a fundamental challenge in the field of plastic surgery. Therefore, tailoring the material's physical characteristics to modulate FBR can represent an effective approach in implantology. While polydimethylsiloxane (PDMS) patterning on 2D substrates is a relatively established and available procedure, micropatterning multiscaled biointerfaces on a controlled large area has been more challenging. Therefore, in the present work, a specific designed honeycomb-like well biointerface was designed and obtained by replication in PDMS at large scale and its effectiveness towards creating a pro-healing environment was investigated. The grayscale masks assisted laser-based 3D texturing method was used for creating the required moulds in Polycarbonate for large area replication. By comparison to the smooth substrate, the honeycomb topography altered the fibroblasts' behaviour in terms of adhesion and morphology and reduced the macrophages' inflammatory response. Additionally, the microstructured surface effectively inhibited macrophage fusion, significantly limiting the colonization of both Gram-positive and Gram-negative microbial strains on the tested surfaces. Overall, this study introduces an innovative approach to mitigate the <em>in vitro</em> FBR to silicone, achieved through the creation of a honeycomb-inspired topography for prosthetic interfaces.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9952-9967"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00063g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A NiCo oxide/NiCo sulfate hollow nanowire-coated separator: a versatile strategy for polysulfide trapping and catalytic conversion in high-performance lithium-sulfur batteries†","authors":"Jiarui Liu, Xinhai Wang, Tinghong Gao, Wensheng Yang, Qinyan Jian, Bingxian Li, Lishan He and Yunjun Ruan","doi":"10.1039/D5RA00172B","DOIUrl":"https://doi.org/10.1039/D5RA00172B","url":null,"abstract":"<p >Lithium-sulfur batteries (LSBs) are highly anticipated due to their remarkable theoretical specific energy and energy density. Nevertheless, the polysulfide shuttle effect severely curtails their cycle life, posing a significant obstacle to commercialization. Herein, we introduce nickel-cobalt oxide/nickel-cobalt sulfate hollow nanowires (NCO/NCSO-HNWs) as a separator modification material. The ingeniously designed hollow nanostructure of NCO/NCSO-HNWs endows it with a profusion of adsorption and catalytic active sites. This unique feature enables it to not only physically adsorb lithium polysulfides (LiPSs) but also catalytically convert them, thereby remarkably enhancing the anchoring and conversion efficiency of LiPSs. The LSBs equipped with NCO/NCSO-HNWs-modified separators exhibit an outstanding initial capacity of 1260 mA h g<small>⁻¹</small> at 0.2C. Even after 100 cycles, a high capacity of 956 mA h g<small>⁻¹</small> is retained, corresponding to an impressive retention rate of 75.9%. Notably, at 1C, after enduring 500 cycles, the discharge capacity still stabilizes at 695 mA h g<small>⁻¹</small>. The utilization of such hollow nanowire-based separator modification materials represents a novel and effective strategy for elevating the performance of LSBs, holding substantial promise for surmounting the challenges associated with the shuttle effect and expediting the commercialization journey of LSBs.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9875-9883"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00172b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent progress in fluorescent chemosensors for selective aldehyde detection","authors":"Keshav Semwal and Avijit Kumar Das","doi":"10.1039/D5RA01010A","DOIUrl":"https://doi.org/10.1039/D5RA01010A","url":null,"abstract":"<p >Aldehydes (R-CHO) are volatile and chemically active compounds prevalent in the environment, industrial chemicals, food fermentation, and human metabolism. Their release into the atmosphere can lead to pollution and adverse health effects, from mild irritation to severe respiratory and immune system damage. Among aldehydes, formaldehyde (FA) and acetaldehyde (AA) are notable indoor air pollutants with stringent safety limits set by organizations like WHO and OSHA. Current detection techniques, including gas and liquid chromatography, while highly accurate, are expensive and require trained personnel. Conventional sensors, such as semiconductor and chemiresistive types, offer portability and online detection but are hindered by poor selectivity and sensitivity. Optical chemosensors, which operate based on fluorescence or colorimetric changes induced by chemical interactions, have emerged as a promising alternative due to their high sensitivity, selectivity, cost-effectiveness, and portability. This review explores the advancements in optical chemosensors for aldehyde detection, emphasizing novel molecular designs utilizing mechanisms like imine bond formation, cyclization reactions, and aza-Cope rearrangements <em>etc.</em> The applications of these sensors in environmental monitoring, biomedical analysis, and other industries are highlighted, showcasing their potential for real-time, low-concentration detection of aldehydes in diverse settings.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 10005-10021"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra01010a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}