RSC Applied Interfaces最新文献

{"title":"Degradation of chemical warfare simulants over CeO2 and Gd-doped CeO2 aerogels: divergent results of DMMP and DFP†","authors":"Travis G. Novak, Janna Domenico, Alex Balboa, Wesley O. Gordon, Austin E. Herzog, Nam Q. Le, Evan R. Glaser, Paul A. DeSario and Debra R. Rolison","doi":"10.1039/D4LF00390J","DOIUrl":"https://doi.org/10.1039/D4LF00390J","url":null,"abstract":"<p >Ceria (CeO<small>₂</small>) is a promising material for binding and degrading organophosphorus chemical warfare agents (CWAs). This oxide boasts reactive surface hydroxyls, offers a photo-excitable band gap state, and exhibits a propensity to form reactive oxygen species (ROS). Given the challenges of working with live CWAs, researchers generally evaluate CeO<small>₂</small> and other reactive sorbents against a simulant molecule, but these simulants may differ in degradative pathways and fail to accurately predict performance of the sorbent against CWAs. Here, we report key divergence in the properties of Gd-doped CeO<small>₂</small> (GCO) aerogels against two simulants, finding that Gd<small>³⁺</small> substitution for Ce<small>⁴⁺</small> impedes degradation of dimethyl methylphosphonate (DMMP) but improves degradation of diisopropyl fluorophosphonate (DFP). We attribute the difference to enhanced ROS stabilization on the GCO surface. Computational analysis of the two simulants as well as the CWA sarin (GB) reveals ROS improve the binding of fluorophosphorus molecules but not fluorine-free DMMP. Our findings identify GCO as a potentially effective material against CWAs and highlight the limits of DMMP as an arbiter for evaluating materials' efficacy.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 3","pages":" 724-733"},"PeriodicalIF":0.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00390j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944102","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":"Engineering macroporous carbon film supports for freestanding Fe–N–C cathodes at high current densities†","authors":"Simon Kellner, Mengnan Wang, Ying Wang, Jesús Barrio, Guangmeimei Yang, Jingyu Feng, Sandrine E. M. Heutz, Ifan E. L. Stephens and Maria-Magdalena Titirici","doi":"10.1039/D4LF00380B","DOIUrl":"https://doi.org/10.1039/D4LF00380B","url":null,"abstract":"<p >As the oxygen reduction reaction (ORR) kinetics account for the largest share of performance losses for fuel cells, most research in platinum group metal (PGM)-free catalysts prioritize on improving the activity of catalysts by maximizing the active site density and by engineering of the local coordination environment of the active sites to meet the activity targets. Thereby, the mass-transport capabilities of the catalyst are usually neglected at early stages of catalyst development. In this work, the reverse approach is taken: a freestanding carbon film support with an interconnected macropore network is prepared to improve the mass and charge transport of conventional PGM-free particle based catalyst layers. Carbon precursors mesophase pitch and polyvinylalcohol (PVA) are combined with the macropore template polystyrene (PS) spheres in a ball-milling process to form a slurry for casting the film which is subsequently carbonized in different atmospheres to tune the micropore volume. The macroporous films are thoroughly characterized by means of SEM, N<small>₂</small> sorption, XPS and Mercury Intrusion Porosimetry (MIP) and tested as ORR catalyst support for a model FeN<small>₄</small> active site in a gas-diffusion-electrode (GDE) half-cell, which can operate at high current density conditions. This study is the first to compare two support classes, a new in-house synthesized carbon film support and commercial Vulcan XC 72 particle support, in cathode catalyst layers by keeping the molecular catalyst (FePc) on both supports the same. Special focus is directed to the mass transport performances of both type of supports, which are compared at high current densities at 2 A cm<small>⁻²</small> in the GDE cell.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 3","pages":" 704-714"},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00380b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944100","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":"Densely atomic Co–Nx moiety-coupled hierarchical-carbon-microspheres for efficient oxygen electrodes in bioadaptable Mg–air batteries†","authors":"Yanru Liu, Taiqiang Dai, Jia Wang, Lirong Zheng and Xiaogang Fu","doi":"10.1039/D4LF00408F","DOIUrl":"https://doi.org/10.1039/D4LF00408F","url":null,"abstract":"<p >The Mg–air battery is one of the promising candidates for the next generation of bioadaptable power sources. However, it suffers from low efficiency cathodes to facilitate the slow oxygen reduction reaction (ORR). Herein, this work reports a strategy to enhance the density of catalytic active sites and further facilitate their accessibility for advanced air electrodes. A prior spray-assisted stepwise pyrolysis strategy is employed to obtain the densely atomic Co–Nx active site-decorated hierarchically carbon microspheres (Co–Nx–HCM), which are further employed as advanced oxygen electrodes for primary Mg–air batteries. The resulting Co–Nx active sites impart electrodes with good bio-adaptability and decent ORR activity under neutral electrolytes. Furthermore, the hierarchical carbon microspheres endow the air electrode with smooth mass transport. In application of an assembled Mg–air flow battery, the SA Co–Nx–HCM electrode delivers a high open-circuit potential of 1.78 V, a high maximum power density of 34.2 mW cm<small>⁻²</small>, a decent gravimetric energy density of <em>ca.</em> 3441 Wh kg<small>_Mg</small><small>⁻¹</small>, and a long operating life over 100 h. This work paves a way to explore single atomic catalysts with hierarchically porous morphology as advanced air cathodes for bioadaptable electronic devices.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 3","pages":" 696-703"},"PeriodicalIF":0.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00408f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944038","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":"Enhanced proton conductivity from phytic acid-intercalated three-dimensional graphene oxide†","authors":"Shakiba Salehpour, Lutfia Isna Ardhayanti, Yoshiharu Hidaka, Xinyao Liu, Tatsuki Tsugawa, Kazuto Hatakeyama, Md. Saidul Islam, Yoshihiro Sekine, Shintaro Ida and Shinya Hayami","doi":"10.1039/D4LF00364K","DOIUrl":"https://doi.org/10.1039/D4LF00364K","url":null,"abstract":"<p >Despite graphene oxide (GO) and its derivatives showing potential as a proton conductor, the practical implications of GO-based membranes require further optimization of their proton conductivity. Herein, we report the improved proton-conducting properties of phytic acid intercalated three-dimensional graphene oxide (Phy-3DGO). The Phy-3DGO was prepared using a freeze-drying process. Experimental results prove enhanced proton conductivity with a magnitude of 2.45 × 10<small>⁻¹</small> S cm<small>⁻¹</small> at 65 °C and 90% RH in the out-of-plane direction compared to 3.21 × 10<small>⁻³</small> S cm<small>⁻¹</small> for 3DGO under similar experimental conditions. The low activation energy value of 0.26 eV for Phy-3DGO indicates the proton conduction through the Grotthuss mechanism. In the single-cell performance test, a maximum current density of 1210 mA cm<small>⁻²</small> and a maximum power density (MPD) of 248.2 mW cm<small>⁻²</small> were achieved using a 170 μm-thick Phy-3DGO film, compared to an MPD of 98.1 mW cm<small>⁻²</small> for 3DGO. These findings highlight the synergistic effects of graphene oxide and phytic acid in improving the interlayer distance and water retention, resulting in improved proton transport pathways. The study offers valuable insights into developing sustainable and efficient energy storage systems.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 3","pages":" 734-740"},"PeriodicalIF":0.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00364k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944103","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-efficiency CuO-CB6/Co–Al LDH nanocomposite electrode for next-generation energy storage†","authors":"Anakha D. R., Ashika K. M., Vyshnavi T. V., M. Ananthkumar and R. Yamuna","doi":"10.1039/D4LF00417E","DOIUrl":"https://doi.org/10.1039/D4LF00417E","url":null,"abstract":"<p >Supercapacitors are a highly effective choice for energy storage applications. The high specific power, quick charge–discharge time, and inexpensive upkeep of supercapacitors have sparked immense interest in the energy industry and research. The advancement of high-quality supercapacitors depends heavily on the exploitation of composite electrode materials. This study involves the synthesis of cucurbit[6]uril-stabilized CuO nanoparticles (CuO-CB6 NPs) using a simple reduction method, which were then integrated onto cobalt–aluminium layered double hydroxide (Co–Al LDH) in three different ratios (1 : 1, 1 : 2, and 2 : 1) to create CuO-CB6/Co–Al LDH nanocomposites. The structural and chemical properties of the suggested nanocomposites are analyzed using various spectroscopic techniques. The electrochemical performance of CuO-CB6, Co–Al LDH, and CuO-CB6/Co–Al LDH nanocomposites is evaluated using CV, GCD, and EIS measurements. The electrochemical performance of the 1 : 2 CuO-CB6/Co–Al LDH nanocomposite reveals a notable specific capacitance of 1862 F g<small>⁻¹</small> at a current density of 0.45 A g<small>⁻¹</small>. Electrochemical impedance analysis indicates a low charge transfer resistance value and thereby enhanced electrical conductivity for the nanocomposite. The 1 : 2 CuO-CB6/Co–Al LDH nanocomposite demonstrates significant long-term cycling stability, retaining 79% of its initial specific capacitance after 10 000 cycles at a current density of 7.27 A g<small>⁻¹</small>. These findings suggest that the 1 : 2 CuO-CB6/Co–Al LDH nanocomposite exhibits improved electrochemical performance and can be used as an electrode material for supercapacitor applications.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 3","pages":" 684-695"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00417e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944037","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":"Particle arrangement control and mechanical robustness enhancement of structurally coloured photonic balls composed of SiO2 particles for environmentally benign inorganic colourants†","authors":"Takahiro Yamanaka, Yuta Nakatani, Kaho Itoh, Naoki Tarutani, Kiyofumi Katagiri, Kei Inumaru and Yukikazu Takeoka","doi":"10.1039/D4LF00366G","DOIUrl":"https://doi.org/10.1039/D4LF00366G","url":null,"abstract":"<p >Structurally coloured materials composed of monodisperse particles have attracted considerable attention as environmentally benign colourants. However, these materials exhibit poor mechanical robustness and colour degradation. Although efforts have been made to enhance the mechanical properties of structurally coloured materials, research specifically focusing on their mechanical robustness remains limited. This study investigates the preparation and mechanical robustness of structurally coloured photonic balls (PBs) composed of SiO<small>₂</small> particles, emphasising the effects of preparation parameters on the particle arrangement and structural colour. We systematically varied the pH and ionic strength of SiO<small>₂</small> dispersions, alongside the preparation temperatures, to examine their effects on the particle arrangement within PBs. The results indicated that at pH values near the isoelectric point, PBs adopted a colloidal amorphous-type structure, whereas higher pH levels led to colloidal crystalline-type arrangements characterised by vivid structural colours. Notably, increasing the ionic strength transitioned the particle arrangement towards a more disordered state, further emphasising the critical role of surface charge dynamics. In terms of mechanical robustness, the colloidal crystalline-type structures were stronger than their colloidal amorphous-type counterparts. The incorporation of a water-soluble silane compound as a binder in PBs significantly enhanced the interparticle necking formation during heat treatment, thereby improving the mechanical robustness. This study highlights the potential of optimising the preparation conditions for structurally coloured PBs with enhanced mechanical properties, offering a promising alternative to traditional inorganic pigments.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 2","pages":" 550-559"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00366g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594477","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":"Metal decoration of Si particles via high-energy milling for lithium-ion battery anodes†","authors":"Khryslyn G. Araño, Beth L. Armstrong, Robert L. Sacci, Matthew S. Chambers, Chun-Sheng Jiang, Joseph Quinn, Harry M. Meyer, Anton W. Tomich, Amanda Musgrove, Steven Lam, Elena Toups, Chongmin Wang, Christopher S. Johnson and Gabriel M. Veith","doi":"10.1039/D4LF00393D","DOIUrl":"https://doi.org/10.1039/D4LF00393D","url":null,"abstract":"<p >The solid electrolyte interphase (SEI) of silicon (Si) anodes for lithium-ion batteries has been a major focus of research for over a decade. One key factor influencing the formation and composition of the SEI is the desolvation of solvated Li ions, which involves an associated energy barrier. To address this, we aim to disrupt interfacial processes by decorating the Si surface with metals, which are conventionally used to improve the conductivity of Si. This study investigates the preparation and electrochemical performance of metal-decorated Si powders (Si<small>^M</small>, where M represents Ni, Fe, Ti, Ag, Al, or Y) as anode materials, using a simple high-energy ball milling process. STEM reveals that the resulting Si<small>^M</small> architectures either appear as islands on the Si surface or are integrated into the Si bulk, although X-ray diffraction (XRD) confirms that the Si lattice is essentially unchanged. The inherent high electronic conductivity of the metals contributed to lower electrode resistance revealed through scanning spreading resistance microscopy (SSRM), with Si<small>^Ni</small> achieving the overall lowest resistance at log(<em>R</em>) = 8.7 log(<em>Ω</em>), compared to log(<em>R</em>) = 10.8 log(<em>Ω</em>) for baseline Si, which is also consistent with reduced impedance during cycling. Among the materials studied, Si<small>^Ni</small>, Si<small>^Fe</small>, and Si<small>^Ti</small> demonstrated the most promising performance, reducing overpotential by up to 20 mV, delivering specific capacities above 1000 mAh g<small>⁻¹</small> at a C/3 rate, and exhibiting improved rate capability. Zeta potential measurements suggest that particles with lower zeta potential correlate with better performance. Finally, SEI analysis of insoluble species using XPS revealed that metal decoration, particularly with Ni, results in a stable SEI characterized by lower inorganic LiF content and increased C–O products compared to the baseline Si at high states of charge, consistent with its enhanced performance.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 3","pages":" 648-664"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00393d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944036","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":"Selective laser processing of particle accelerator beam screen surfaces for electron cloud mitigation†","authors":"Elena Bez, Ana Karen Reascos Portilla, Valentine Petit, Konstantinos Paraschou, Lotta Mether, Kristóf Brunner, Patrick Krkotić, Yasemin Askar, Sergio Calatroni, Mauro Taborelli and Marcel Himmerlich","doi":"10.1039/D4LF00372A","DOIUrl":"https://doi.org/10.1039/D4LF00372A","url":null,"abstract":"<p >Laser-induced surface roughening is a technique that facilitates the reduction of secondary electron emission (SEE) from materials, which is crucial for mitigating electron cloud (EC) formation in particle accelerators, that operate with positively charged species, such as the large hadron collider (LHC). This study focuses on the development of a selective laser surface treatment of the inner copper surface of beam screens (BS) within superconducting (SC) magnets. Several technical challenges linked to laser processing exist including the reduction of treatment time and the control of ablation depth. Based on the found correlations between laser treatment parameters and materials properties, and considering all technical constraints for execution of such a process in SC magnets, a tailored laser processing strategy is developed, which includes creation of a rough Cu surface with trenches of 15–20 μm depth and an initial secondary electron yield maximum of 1.4–1.5, only in the most relevant regions of the BS. Resulting material properties are characterized such as the surface resistance and related beam impedance, as well as the SEE at both room temperature and cryogenic conditions. The efficiency to mitigate EC formation and thus improve beam quality is demonstrated <em>via</em> EC simulations and electron-induced conditioning experiments. This study also explores under which circumstances the risk of particulate detachment from the surface, which could lead to critical beam interaction, can be minimized.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 2","pages":" 521-533"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00372a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594475","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 review on research progress of double perovskite oxides for oxygen evolution reaction electrocatalysts and supercapacitors†","authors":"Liangdong Chen, Jie Ding and Xinhua Zhu","doi":"10.1039/D4LF00395K","DOIUrl":"https://doi.org/10.1039/D4LF00395K","url":null,"abstract":"<p >In the past decade, the rapidly increasing global demand for energy and extensive concerns about the greenhouse effect and environmental problems from fossil fuels have stimulated intensive research interest in developing sustainable and clean energies and new electrochemical energy storage systems. Practical utilization of clean energies requires energy conversion involving different processes such as electricity-driven water splitting facilitating the storage of electrical energy in the form of hydrogen gas, and energy storage devices such as fuel cells and supercapacitors. A key issue to realize a high-efficiency conversion process is to find stable, low-cost and environment-friendly functional materials. Due to their extreme structural and compositional flexibilities, double perovskite (DP) oxides have gained much attention in the fields of electrocatalysis and supercapacitors. Recently, high-level theoretical studies have led to significant progress in the atomic-scale understanding of the catalytic mechanism of the DP oxide-driven oxygen evolution reaction (OER) and the electrochemical energy storage mechanism in DP oxide-based supercapacitors. In parallel, numerous experimental studies have been carried out to explore novel catalytic materials with advanced properties and kinetics, and more promising pseudocapacitive DP oxides have been developed. This review first introduces the structural and compositional flexibilities of DP perovskite oxides, and their prepared methods are described. Several strategies (<em>e.g.</em>, nanostructure designs, elemental doping, tuning morphologies, crystallinity and surface defect engineering for improving oxygen vacancies) for modulating their electrochemical performance are also described. The recent progress of their applications in the electrochemical OER and supercapacitors is summarized. Finally, we conclude this review by giving some challenges and future perspectives of DP oxides in renewable energy conversion and energy storage devices.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 2","pages":" 320-351"},"PeriodicalIF":0.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00395k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594549","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":"Sustainable high-yield h-BN nanosheet production by liquid exfoliation for thermal interface materials†","authors":"Vanmathi Ravichandran and Eswaraiah Varrla","doi":"10.1039/D4LF00338A","DOIUrl":"https://doi.org/10.1039/D4LF00338A","url":null,"abstract":"<p >Thermally conductive and electrically insulating hexagonal boron nitride (h-BN) is essential for thermal interface materials (TIMs) to effectively transfer heat from the source to sink in laptops and optoelectronic devices. Currently, thermal compounds rely on energy-intensive techniques and require nanofillers in very high loading percentages. Additionally, using mixtures of several fillers is an unreliable approach for heat management. In this work, we demonstrate the high-yield synthesis of atomically thin h-BN nanosheets in a natural surfactant/aqueous medium using liquid phase exfoliation (LPE). The exfoliated nanosheets are characterized by electron microscopy, absorbance spectroscopy, and XPS techniques. Extinction and gravimetry measurements confirm an overall yield of ∼89% after four cycles of exfoliation, successfully converting thick and bulk h-BN into h-BN nanosheets (h-BNNS) in water. Approximately 90% of the exfoliated nanosheets in ink form are recovered from the dispersion through low-speed centrifugation, indicating that the surfactant molecules are loosely bonded to the surface of the nanosheets. The quality of the exfoliated h-BNNS, including the lateral length (∼269 nm) and the number of layers (∼6), remains consistent during recycling. A 20 wt% h-BNNS in PVA thermal film reduces the surface temperature of a 10 W light-emitting diode (LED) bulb by ∼11 °C, while a 20 wt% h-BNNS in silicone oil (SO) thermal grease performs comparably to commercial thermal paste with 50 wt% particle loading for heat management. The thermal conductivity of the h-BNNS-based thermal film and thermal grease was measured using a modified transient plane source (MTPS) method and modelled using finite element analysis (FEA) to calculate thermal resistance. This study explores the utilization of a high-yield LPE process for h-BN nanosheets with natural stabilizers, enabling scalable exfoliation for heat management applications.</p>","PeriodicalId":101138,"journal":{"name":"RSC Applied Interfaces","volume":" 2","pages":" 534-549"},"PeriodicalIF":0.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lf/d4lf00338a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594476","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}