The Royal Society of Chemistry最新文献

{"title":"Experimental and artificial intelligence molecular models to predict quenching behavior of carbon materials from petroleum waste for sustainable corrosion monitoring","authors":"Maimuna U. Zarewa and Tawfik A. Saleh","doi":"10.1039/D5RA02534F","DOIUrl":"https://doi.org/10.1039/D5RA02534F","url":null,"abstract":"<p >Quantum dots have attracted a lot of interest because of their special optical characteristics and potential for a variety of uses, such as in inks and sensors. Additionally, petroleum coke recycling is crucial for resource efficiency, economic growth, and environmental sustainability. It solves problems linked to carbon emissions and landfill waste. Industries can reduce their environmental impact while generating new opportunities for innovation and expansion. Petroleum coke quantum dots (PCQDs) were synthesized using the reflux method at 120 °C for 12 h, then characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and electron pair resonance spectroscopy (EPR), and were utilized to differentiate Fe<small>²⁺</small> and Fe<small>³⁺</small> for early-stage corrosion detection in real samples. LOD values of 0.39 µM and 0.36 µM for Fe<small>²⁺</small> and Fe<small>³⁺</small> were obtained using a Stern–Volmer plot. PCQDs demonstrate outstanding selectivity for iron in the presence of diverse cationic and anionic interferents, as well as remarkable stability under harsh continuous optical and thermal conditions. In addition, due to the intense blue emission of PCQDs, they have been utilized as a fluorescent security invisible ink for documenting sensitive information. The PCQDs exhibit around 70 wt% yield, 50% quantum yield, and a half-life of 9.5 ns. Due to their excellent efficiency and simplicity in synthesis, PCQDs can be utilized for industrial-scale production.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 39059-39070"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra02534f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315546","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":"Synthesis and hygrothermal properties of capric–myristic acid/diatomite-based composite phase change materials for thermal energy storage","authors":"Meng Zhou, Qi Feng, Xiuli Sun, Yukuan Wang, Jing Deng and Hongyi Liang","doi":"10.1039/D5RA06392B","DOIUrl":"https://doi.org/10.1039/D5RA06392B","url":null,"abstract":"<p >In this paper, diatomite (DE) served as the supporting material, and capric acid–myristic acid (CA–MA) was utilized as the phase change material (PCM) to synthesize CA–MA/DE composite PCM <em>via</em> the vacuum impregnation method. Leak experimental results indicated that the optimal weight ratio of CA–MA was identified as 40%. The chemical compatibility, thermal properties, and stability of CA–MA/DE were evaluated. The phase temperature and latent heat of CA–MA/DE were obtained as 22.21 °C and 74.07 J g<small>⁻¹</small>, respectively. To study the feasibility of CA–MA/DE in energy-efficient buildings, CA–MA/DE was used to replace sand of equivalent quality to prepare the CA–MA/DE-based gypsum mortar (CA–MA/DE&amp;GM). The results showed that the replacement rate of CA–MA/DE was determined as 30%, and the thermal properties and humidity regulation performance of CA–MA/DE&amp;GM were significantly enhanced due to the addition of the CA–MA/DE. Notably, the digital image correlation (DIC) technique was employed to investigate the crack evolution mechanism of CA–MA/DE&amp;GM30 (CA–MA/DE content was 30%) over 100 thermal cycles. The novel CA–MA/DE&amp;GM30 can adjust the environmental temperature and humidity simultaneously, which has considerable potential for energy conservation in buildings.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 38822-38831"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra06392b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315622","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":"Nickel-catalyzed Chan–Lam coupling: an efficient route to N-arylated 2-aminobenzothiazoles under ambient conditions","authors":"Rose Mary Philip, P. S. Devi and Gopinathan Anilkumar","doi":"10.1039/D5RA06530E","DOIUrl":"https://doi.org/10.1039/D5RA06530E","url":null,"abstract":"<p >A nickel-catalyzed C–N coupling of 2-aminobenzothiazoles and aryl boronic acids under mild reaction conditions is disclosed. The reaction afforded <em>N</em>-arylated 2-aminobenzothiazoles in the presence of a Ni/4,4′-dOMebpy catalytic system under open-air conditions. The method encompasses a wide range of applicable substrates, including aryl boronic acids and 2-aminobenzothiazoles, affording the corresponding C–N coupled products in moderate to good yields in short reaction times.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 38933-38937"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra06530e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315633","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":"Fabrication of PAA-co-PNIPAm brushes via surface-initiated-PET-RAFT polymerization and investigation of their dual responsive behavior","authors":"Asya Eroğlu, Özge Laçin and Ertan Yildirim","doi":"10.1039/D5RA06000A","DOIUrl":"https://doi.org/10.1039/D5RA06000A","url":null,"abstract":"<p >Stimuli-responsive polymers have attracted considerable attention because they can alter their chemical structures or physical properties in response to external triggers. Such smart polymers have found applications in various fields, including sensors, drug delivery, water purification, recyclable catalysis, separation, and more. Polymers exhibiting stimuli responsive behavior have been synthesized in response to various stimuli to date. In this study, the relatively new PET-RAFT polymerization technique was employed to synthesize and characterize both homo- and copolymer brushes on silicon disc surfaces. Brushes consisting of a single polymer segment (poly(acrylic acid) (PAA), poly(<em>N</em>-isopropylacrylamide) (PNIPAm)) and two polymer segments ((PAA-<em>co</em>-PNIPAm), denoted as P1, P2 and P3) were prepared using SI-PET-RAFT polymerization to analyze their stimuli responsive behavior for the first time. Water contact angle (WCA) measurements revealed pH- and temperature-triggered transitions. PAA brushes showed a distinct transition around pH 5–6, with the WCA decreasing by approximately 35° as pH increased from 4 to 6. PNIPAm brushes exhibited a thermal transition near 30 °C, with the WCA increasing by about 10° as the temperature increased from 28 °C to 32 °C. The copolymer brushes displayed composition-dependent tunable responses. P1 (PAA-rich) presented a sharp pH transition around pH 5, with the WCA decreasing by approximately 46° as pH increased from 4 to 6. P2 (equimolar PAA/PNIPAm) showed a slightly less sharp pH transition around pH 5–6, with WCA decreasing by around 39° over pH 4–6. P3 (PNIPAm-rich) exhibited a transition around pH 5, with WCA decreasing by roughly 36° over the same range. Although the sharpness of the pH-induced transition slightly decreased from P1 to P2 and P3 as the PAA fraction decreased and PNIPAm fraction increased, a clear pH response was retained. Thermally, P1 and P2 underwent transitions around 29 °C, with WCA increasing by about 10° and 7.5° respectively, as the temperature increased from 28 °C to 32 °C. P3 showed a slightly shifted transition around 31 °C, with WCA increasing by about 10.5° over the same range. These findings demonstrate that dual responsive behavior can be tuned by monomer composition, thereby offering potential for controlled drug delivery and other bio-related applications.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 38876-38888"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra06000a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315615","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":"Cobalt-incorporated triclinic sodium aluminosilicate nanostructures: structural, optical, magnetic, and electrochemical investigations","authors":"Ali B. Abou Hammad, A. M. Fathi, A. A. Azab, A. M. Mansour and Amany M. El Nahrawy","doi":"10.1039/D5RA06560G","DOIUrl":"https://doi.org/10.1039/D5RA06560G","url":null,"abstract":"<p >Cobalt-doped sodium aluminosilicate nanostructures were synthesized <em>via</em> a sol–gel method and investigated for their structural, optical, magnetic, and electrochemical properties. X-ray diffraction confirmed the formation of a triclinic albite phase (NaAlSi<small>₃</small>O<small>₈</small>) with successful incorporation of Co<small>²⁺</small> ions into the aluminosilicate framework. Optical absorption studies revealed new bands associated with tetrahedral Co<small>²⁺</small> in Al<small>₂</small>O<small>₃</small> nanocrystals, and a systematic decrease in the optical band gap with increasing Co content due to the creation of localized states in the band gap. Magnetic measurements demonstrated a transition from diamagnetic behavior in the undoped sample to ferromagnetic behavior in Co-doped samples, with enhanced saturation magnetization linked to exchange interactions. Electrochemical studies showed that the sample with the lowest Co content (ANSS1Co) exhibited the highest specific capacitance (187 F g<small>⁻¹</small> at 1 A g<small>⁻¹</small>) and excellent cycling stability, retaining 89.5% capacitance after 8000 cycles. These results highlight the potential of Co-doped sodium aluminosilicate nanostructures as stable electrode materials for energy storage applications.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 38969-38985"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra06560g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315636","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":"Nickel-catalyzed [4+2] cycloadditions of β-ketoesters and alkynes.","authors":"Tongtong Ni, Xuefeng Xu, Wenguang Li, Shiyuan Li, Heyun Sheng, Xu Zhang","doi":"10.1039/d5cc04128g","DOIUrl":"https://doi.org/10.1039/d5cc04128g","url":null,"abstract":"<p><p>The nickel-catalyzed synthesis of pyranone derivatives from β-ketoesters and alkynes has been reported. This reaction showcases remarkable versatility as it can incorporate a wide range of β-ketoesters and demonstrates the capacity to tolerate numerous functional groups and complex molecular structures.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of naphth[2,1-<i>a</i>]azulenes <i>via</i> [8 + 2] cycloaddition of 2<i>H</i>-cyclohepta[<i>b</i>]furan-2-ones, and their reactivity, optical, and structural properties.","authors":"Taku Shoji, Akari Yamazaki, Miku Yoshida, Masafumi Yasunami Deceased, Shigeki Mori, Tetsuo Okujima, Takumi Kamayachi, Ikumi Uchiyama, Ryuta Sekiguchi, Shunji Ito","doi":"10.1039/d5ob01492a","DOIUrl":"https://doi.org/10.1039/d5ob01492a","url":null,"abstract":"<p><p>A concise and efficient synthetic route to naphth[2,1-<i>a</i>]azulenes was developed <i>via</i> [8 + 2] cycloaddition of 2<i>H</i>-cyclohepta[<i>b</i>]furan-2-ones with enamines or a silyl enol ether derived from α-tetralones. A diverse array of functionalized naphth[2,1-<i>a</i>]azulenes was further obtained through functionalization reactions, including electrophilic substitution, homocoupling, and cross-coupling reactions. Comprehensive spectroscopic analyses, including ¹H NMR, UV-Vis, fluorescence spectroscopy, and single-crystal X-ray diffraction, along with NICS calculations, revealed reduced aromaticity of the azulene core and a strong dependence of optical properties on the substitution pattern. Furthermore, naphth[2,1-<i>a</i>]azulenes exhibited pronounced halochromic behaviour and fluorescence in acidic media. Electrochemical studies indicated predominantly irreversible redox behaviour, however, certain donor-acceptor systems displayed quasi-reversible responses attributed to slow electron transfer kinetics.</p>","PeriodicalId":96,"journal":{"name":"Organic & Biomolecular Chemistry","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Researches and applications of pollution prevention and control technologies for carbon dross from electrolytic aluminium production: a review","authors":"Ningning Feng, Chenquan Wang, Chunqiang Chen, Xi Liu and Qiang Huo","doi":"10.1039/D5RA04272K","DOIUrl":"https://doi.org/10.1039/D5RA04272K","url":null,"abstract":"<p >This review focuses on the long-overlooked carbon dross from aluminum electrolysis, a hazardous waste enriched in carbon and high-fluoride salts, despite its relatively low generation volume. With the continuous expansion of global aluminum production, the output of carbon dross has increased accordingly, yet its environmental risks and resource potential have not received sufficient attention. For the first time, this article provides an examination of carbon dross following a “generation-hazards–prevention-control” framework. It elucidates the formation mechanism <em>via</em> corrosion, spalling, and entrainment of carbon anodes in electrolytic cells, and analyzes the release behavior and ecotoxicological effects of its toxic components. The limitations of existing end-of-pipe treatment technologies are critically assessed. Furthermore, based on the 3C (clean-cycle-control) green development strategy, a management framework is proposed: clean first, through the adoption of inert anodes, energy-efficient electrolysis processes, and intelligent optimization to minimize dross generation at the source; for unavoidable dross, the cycle is employed to achieve high-value recovery of aluminum fluoride and functional carbon materials; finally, by integrating cross-scale environmental risk assessment and policy instruments, a science-technology-management integrated control decision-making system is established, offering a paradigm for low-carbon, high-value, and safe management of carbon dross.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 38698-38713"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra04272k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315602","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":"Atomic insights into the material properties of double-perovskite-type hydride LiNaMg2H6 for H2 storage applications","authors":"Son-Il Jo, Hyong-Ju Kim, Chol-Ho Pang, Un-Gi Jong and Tal-Hwan Kye","doi":"10.1039/D5RA05174F","DOIUrl":"https://doi.org/10.1039/D5RA05174F","url":null,"abstract":"<p >Perovskite-type compounds exhibit multi-functional properties that make them suitable for luminescence, photocatalysis, photovoltaics and H<small>₂</small> storage applications. Here, we provide atomic insights into the material properties of the double-perovskite-type hydride LiNaMg<small>₂</small>H<small>₆</small> for H<small>₂</small> storage applications. Electronic structure calculations show that the cubic LiNaMg<small>₂</small>H<small>₆</small> is an insulator with a direct band gap of 2.8 eV at the Γ point, consist with electron localization function and Born effective charge analyses. Based on geometric factors, elastic constants and self-consistent phonon calculations, we find that LiNaMg<small>₂</small>H<small>₆</small> is dynamically and mechanically stable in the cubic phase at elevated temperatures, satisfying Born’s stability criteria. Finally, it is illustrated that the gravimetric and volumetric H<small>₂</small> storage capacities are 7.09 wt% and 91.12 g L<small>⁻¹</small>, and the H<small>₂</small> desorption temperature is 548.54 K by considering the quantum effect, explaining well previous experimental observations. Our calculations highlight that LiNaMg<small>₂</small>H<small>₆</small> hydride can be a potential H<small>₂</small> storage material because of its high H<small>₂</small> storage capacity, mechanical and dynamical stabilities and suitable H<small>₂</small> desorption temperature.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 38906-38915"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra05174f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315617","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":"Zinc-integrated PLGA/chitosan nanofiber mesh: a platform for wound healing applications","authors":"Dekonti Davies, Alexis Moody, Sita Shrestha, Reedwan Bin Zafar Auniq, Kiran Subedi, Jagannathan Sankar and Narayan Bhattarai","doi":"10.1039/D5RA03639A","DOIUrl":"https://doi.org/10.1039/D5RA03639A","url":null,"abstract":"<p >Non-healing wounds present significant challenges to patients and healthcare systems, often causing infections and chronic pain due to impaired self-regeneration. Zinc (Zn) shows promise in biomedical applications, particularly wound healing, as its degradation releases Zn<small>²⁺</small> ions that enhance cell proliferation, angiogenesis, and antimicrobial activity. These properties make Zn ideal for bioresorbable wound dressings, scaffolds, and tissue repair coatings. This study aimed to incorporate metallic Zn particles into electrospun nanofiber meshes of poly(<small>D</small>,<small>L</small>-lactic-<em>co</em>-glycolic acid) (PLGA) and PLGA/chitosan (PLGA–CH) and evaluate their wound healing potential. We electrospun polymer–Zn nanoparticle mixtures to fabricate composite fibrous meshes. We assessed Zn's impact on scaffolds' physical, chemical, and biological properties, including fiber morphology, chemical composition, mechanical strength, and Zn<small>²⁺</small> release. Results showed Zn influences PLGA's physical properties without altering chemical composition. Zn-containing meshes released Zn<small>²⁺</small> ions in a dose-dependent manner. Biological evaluations using 3T3 fibroblasts over three days revealed fiber composition-dependent cytotoxicity, with certain compositions supporting cell proliferation, suggesting potential for tissue remodelling. Given PLGA and chitosan's biocompatibility and biodegradability, incorporating Zn into composite nanofiber meshes presents a promising approach for wound healing and tissue engineering applications.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 46","pages":" 38846-38864"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03639a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315625","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}