Applied Surface Science最新文献

{"title":"Enhanced anti-icing and drag reduction of multilayer composite structure superhydrophobic surface","authors":"Xinghe Jiang, Changjiang Zhou, Jie Su, Shan Tang, Ning Li","doi":"10.1016/j.apsusc.2024.162178","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162178","url":null,"abstract":"In this study, a high-performance superhydrophobic coating is designed to significantly enhance anti-icing, corrosion resistance, and drag reduction on aluminum alloy surfaces. Inspired by biological microstructures of armadillos, femtosecond laser ablation is used to engineer periodic micro-nano patterns on the alloy surface. γ-aminopropyltriethoxysilane (KH550)-modified epoxy resin E51 acts as an adhesive layer to strengthen bonding. Hydrophobic is further enhanced by treating KH550-modified silica (SiO₂) nanoparticles with hexadecyltrimethoxysilane (HDTMS) and octadecyltrimethoxysilane (OTMS). The F-M@KH-SiO₂/HDTMS/OTMS superhydrophobic coating achieves a contact angle of 168.29° and a sliding angle of 1.35°, demonstrating exceptional water repellency. Anti-icing tests show a freezing delay of up to 840 s, representing a 154.55 % improvement over untreated surfaces. Drag reduction tests indicate an 11.7 % decrease in fluid resistance, attributed to the reduction in the liquid–solid contact area. The coating exhibits excellent mechanical durability after 100 abrasion and peeling cycles, and resists acidic, alkaline and salt solutions for 100 h. Electrochemical corrosion tests show a 99.17 % reduction in corrosion current density in a 3.5 wt% NaCl solution. These results suggest the potential of this bio-inspired coating for applications in aerospace, automotive, and marine industries, especially in harsh environments.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"5 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bifunctional high-strength and anti-shuttling separator based on negatively-charged-cellulose-nanofibers for high-energy and stable flexible Zn-I2 batteries","authors":"Hong Qu, Wei Guo, Wenjing Li, Lianyi Shao, Yiyu Chen, Sulian Su, Lifeng Hang, Guihua Jiang","doi":"10.1016/j.apsusc.2024.162180","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162180","url":null,"abstract":"The flexible aqueous zinc-iodine batteries (FZIBs) show promise for wearable electronics, but the polyiodide shuttling effect limits iodine loading. Here, we develop a high-strength and negatively charged separator based on bio-sustainable and low-cost carboxylated cellulose nanofibers (c-CNFs) to obtain high-performed FZIBs. The negatively charged <img alt=\"single bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" style=\"vertical-align:middle\"/>COO⁻ groups on the c-CNFs can repel the shuttling of iodine species and simultaneously enable a robust mechanical strength based on strong hydrogen bonding, allowing for shuttling-free high-loading FZIBs with improved energy and stability. Our research demonstrated the cellulose-based separator to enable FZIBs as a high-energy and stable flexible power supply.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"40 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, electrical, magnetic transport and quantum transport properties of PbPdO2 thin films: Experimental and first-principles study","authors":"Hai Jia, Liqiang Zeng, Xinyi Zheng, Hongbin Lin, Jian-Min Zhang, Zhiya Lin, Shaoming Ying, Zhigao Huang, Xiaohui Huang","doi":"10.1016/j.apsusc.2024.162165","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162165","url":null,"abstract":"The zero-band gap semiconductor PbPdO₂, with its distinctive energy band structure, holds substantial promise for spintronic device applications. In this study, PbPdO₂ films with different vacancy concentrations and (002) preferred orientation were prepared by sol–gel and pulsed laser deposition (PLD). All films exhibited a positive colossal electroresistance (CER) effect, indicating their potential in spintronics. The critical temperatures (<em>T</em>_c) for films with distinct Pb vacancy concentrations were 260 K, 290 K, and 355 K, respectively. The correlation between <em>T</em>_c and barrier height near O^1- site was revealed. The distance between O2<em>p</em> and Pb 6<em>s</em>6<em>p</em> band centers is calculated by first-principles, and the barrier model determining <em>T</em>_c is confirmed. Additionally, the magnetic properties of PbPdO₂ come from O^1- and are affected by the vacancy concentration. The positive CER effect and magnetic source of PbPdO₂ thin films can be well explained by the internal electric field model and first principles. Finally, a crossover between weak anti-localization (WAL) and weak localization (WL) was observed in PbPdO₂ films, indicating that the quantum transport performance of PbPdO₂ films can be achieved by regulating the vacancy content, which provides a comprehensive guide for the design and optimization of PbPdO₂-based spintronic devices.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"31 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving nucleation of ALD films via the ion implantation pretreatment approach: Calculation and experiments","authors":"Dachen Deng, Xing Yan, Ling Tang, Yang Luo, Hua Li, Ye Xu, Liuhe Li, Mingyue Han","doi":"10.1016/j.apsusc.2024.162179","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162179","url":null,"abstract":"As a highly recommended approach, the atomic layer deposition (ALD) is widely applied to prepare the nanoscale thin films. To enable the development of ALD in high-quality films, overcoming the non-uniform film growth caused by heterogeneous distribution of reactive sites become vital and attractive nowadays. In this work, efforts for improving the nucleation of iridium (Ir) films on the rhenium (Re) substrates have been made using the pretreatment of plasma immersion ion implantation (PIII) combining with the magnetron sputtering. The related theories of this novel pretreatment method have been studied using the density functional theory (DFT) calculation. The ALD films prepared on the pretreated surfaces were characterized to investigate effects of pretreatment on the microstructure and elemental distribution for nucleation uniformity and film quality. Calculation and experimental results demonstrate that the ion implantation pretreatment on the Re substrate effectively modifies the surface microstructure, increases the density of active sites, and contributes to a well-modulated surface with enhanced homogeneity and affinity. The films deposited on the pretreated surface exhibit more uniform grain size, higher nucleation density, shorter grain spacing and thinner thickness. Our results may pave the way for the deposition of high-quality ALD films on low affinity surfaces.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"53 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of ultra-high dispersed monolayer of perfluoroepoxy-oligomer grafted graphene oxide and its application prospects in fluorinated functional materials","authors":"Yuan-Qi Wang, Bing-Yu Han, Jia-Xing Zhu, Jian-Gang Chen, Yingzhe Liu, Shukun Shen, Yinglei Wang, Zhao-Tie Liu, Zhong-Wen Liu, Jian Lu","doi":"10.1016/j.apsusc.2024.162176","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162176","url":null,"abstract":"An integrated strategy of ultrasound-enhanced graft/esterification of graphene oxide (GO) with hexafluoropropylene oxide oligomer ((HFPO)_n-COX) (UEGGH) is successfully proposed/established to prepare the highly dispersed GO monolayer (F_nGO-U). A series of F_nGO-U is efficiently achieved in mild conditions with controllable structure via UEGGH, and characterized via FTIR, XPS, Raman, XRD, FETEM and AFM. By systematically experimental investigation and computational simulations, the key role of the fluorinated chains and ultrasound is discerned. It is proved that the ultrasound may synergistically enhance the intercalation, graft/esterification and exfoliation of GO with (HFPO)_n-COX. Importantly, owing to the special repulsion among the grafted fluorinated chains and its effective inhibition to the spontaneous aggregation, F_nGO-U exists most dominantly in monolayer, and can be excellently dispersed in solvents, liquid (fluorinated) oligomers and polymer solutions. Finally, F_nGO-U is intentionally introduced/dispersed into PVDF-HFP and PFPE to evaluate/consolidate its superiority, and to develop its application in fluorinated functional materials. It was found that the mechanical properties and ionic conductivity of the prepared F_nGO-U/PVDF-HFP composite membranes are approximately three times higher than those of PVDF-HFP membranes. Moreover, the wear volume of the prepared F_nGO-U/PFPE composite lubricants is dramatically reduced to almost less than one fifth of magnitude compared to that of PFPE.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"13 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing seawater electrolysis with electronically tuned Co3O4 -NiOx heterostructures","authors":"Hongji Peng, Xiaoliang Zhang, Bingrong Wang, Yang Cao, Mingyu wang, Delun Chen, Xiaohong wang, Jinchun Tu","doi":"10.1016/j.apsusc.2024.162162","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162162","url":null,"abstract":"In seawater electrolysis for hydrogen production, the competition between chlorine evolution and oxygen evolution reaction (OER) at the anode limits its hydrogen yield and system stability. To address this, we optimized the anode material by modulating the surface electronic structure of the active sites of Co₃O₄ using atomic layer deposition (ALD) technology. By introducing the atomic layers of NiO_x species, this approach results in the synthesis of a NiO_x@Co₃O₄/Carbon cloth (CC) heterojunction, which serves as an effective oxygen evolution reaction electrocatalyst for high-performance seawater electrolysis. Adjusting the deposition cycles creates unique material interfaces that facilitate the transformation of reaction intermediate. The NiO_x@Co₃O₄/CC heterostructure demonstrates superior catalytic performance over single-phase materials, which is attributed to its unique Ni-O-Co interface, showing low overpotentials of 204 mV in alkaline freshwater and 235 mV in seawater solutions at 10 mA cm⁻², 285 mV in alkaline freshwater and 329 mV in seawater solutions at 100 mA cm⁻². In addition, the incorporation of NiO_x endowed the material with enhanced overall durability and corrosion resistance, reducing Cl-related species adsorption. After 300 h of chronoamperometric testing, the voltage remained stable, indicating its potential as an ideal electrocatalyst for seawater electrolysis under alkaline conditions.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"19 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of multi-shelled ZnMn2O4 hollow spheres@Ni(OH)2 nanosheets for high-performance hybrid supercapacitors","authors":"Feng Zuo, Huidong Xie, Changyu Hu, Kang Chen, Hanyu Yang, Kangkang Wang, Guoping Han, Hu Liu","doi":"10.1016/j.apsusc.2024.162170","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162170","url":null,"abstract":"Herein, multi-shelled ZnMn₂O₄ hollow nanospheres were synthesized via a mixed solvothermal method using colloidal carbon spheres as templates. Subsequently, a layer of Ni(OH)₂ nanoflakes was densely grown on the surface of the ZnMn₂O₄ nanospheres through a secondary hydrothermal process, yielding a heterostructure nanoflower-like ZnMn₂O₄@Ni(OH)₂ electrode material. ZnMn₂O₄@Ni(OH)₂ shows high specific capacitance through the synergistic mechanism that the multi-shelled ZnMn₂O₄ nanospheres act as “charge storage” and the Ni(OH)₂ nanosheets act as “charge transducers” to quickly introduce charges into the ZnMn₂O₄ nanospheres. The resulting ZnMn₂O₄@Ni(OH)₂ electrode material exhibits a specific capacitance of 816.36 F g⁻¹ at a current density of 1 A g⁻¹, which is higher than that of individual ZnMn₂O₄ hollow nanospheres and Ni(OH)₂ nanoflakes. An asymmetric supercapacitor device was fabricated by integrating the ZnMn₂O₄@Ni(OH)₂ nanoflowers with activated carbon. The device demonstrated a high energy density of 74.8 Wh·kg⁻¹ at a power density of 3240 W·kg⁻¹ and a long cycle life of 75 % capacitance retention after 5000 cycles. The simple synthesis route and excellent performance of the ZnMn₂O₄@Ni(OH)₂ electrode material show strong potential for future energy storage applications. The results provide the future energy-storage devices with excellent electrochemical properties by the hetero-growth of transitional metal oxides/hydroxides.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"24 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of catalysts on the electronic properties of gallium nitride nanomaterials","authors":"Tobias Haposan, Joko Suwardy, Liliana Tjahjana, Umar Saleem, Caozheng Diao, Chi Sin Tang, Xinmao Yin, Mark B.H. Breese, Hong Wang, Muhammad Danang Birowosuto, Andrivo Rusydi","doi":"10.1016/j.apsusc.2024.162111","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162111","url":null,"abstract":"The current advancement in tailoring the morphological states of GaN nanomaterials (GaN-NMs) is highly pursued. However, utilizing different types of catalysts during the synthesis could alter the outcome of the electronic response of the GaN-NMs. Herein, we demonstrate the applicability of the element- and surface-sensitive X-ray absorption spectroscopy (XAS) as a tool to distinguish Ga &lt;em&gt;L&lt;/em&gt;- and N &lt;em&gt;K&lt;/em&gt;-edges features of GaN-NMs synthesized with Ge, Ni, and Ge/Ni catalysts. In particular, we resolved the implication of tuning indirectly the unoccupied 2&lt;em&gt;p&lt;/em&gt; states of N atoms corresponding to access the orbital hybridisation mixing at low temperatures. We propose that the type of catalysts play a role in determining the &lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;s&lt;/mi&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;p&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"2.663ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -896.2 1426.9 1146.6\" width=\"3.314ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMATHI-73\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(469,0)\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMATHI-70\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(503,362)\"&gt;&lt;g is=\"true\"&gt;&lt;use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-33\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;s&lt;/mi&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;p&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;s&lt;/mi&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;p&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt;/&lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;s&lt;/mi&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;p&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"2.663ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -896.2 1426.9 1146.6\" width=\"3.314ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 ","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"76 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achieving carbon neutrality through conversion of CO2 to cyclic carbonates using bifunctional benzimidazolium-based pyridine hypercrosslinked polymers","authors":"You Shu, Zhi-Yong Yang, Wen-Kai Pan, De-Xuan Xiang, Jing-Gao Wu, Lai-Hao Gao, Xu Jiao, Hong He, Zai-Xing Zhang, Gui Chen","doi":"10.1016/j.apsusc.2024.162164","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162164","url":null,"abstract":"Carbon capture, utilization, and storage strategies have emerged as critical and practical solutions for mitigating excessive carbon emissions. This study introduced the synthesis of 1,3-disubstituted imidazolium salt-functionalized hypercrosslinked polymer (HCPs) through Friedel-Crafts alkylation reaction. By manipulating the substituent group structure of the imidazole salts, the materials with a hierarchical pore structure and a moderate specific surface area was obtained, reaching up to 492 m²·g⁻¹. The catalytic efficacy of HCPs materials in converting CO₂ into cyclic carbonates was evaluated in the absence of metals, solvents, or additives. Among these, HCPs-1 demonstrated exceptional catalytic performance in CO₂-epoxide cycloaddition reaction, achieving yields as high as 99 % under 1.0 MPa CO₂ at 100°C over 10 h. Additionally, epoxides bearing various substituent groups were converted into cyclic carbonates using HCPs-1. The recyclability tests indicated that HCPs-1 retained its catalytic activity with no significant degradation after 6 cycles. Furthermore, the results of density functional theory (DFT) calculations revealed that benzimidazolium salts enhance the activation of both CO₂ and epoxides through CO₂-philic N atoms and strong H-bonding interactions, thereby facilitating the cycloaddition process. Consequently, this work introduces a novel approach to the design and synthesis of imidazolium-functionalized heterogeneous catalysts, integrating heteroatoms to enhance catalytic activity.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"13 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved hydrogen isotope separation via Cu-exchanged Gismondine-type zeolites","authors":"Soon Hyeong So, Minji Jung, Raeesh Muhammad, Taeung Park, Hyunchul Oh","doi":"10.1016/j.apsusc.2024.162171","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162171","url":null,"abstract":"The growing demand for pure deuterium (D₂) and the need to manage nuclear wastewater have driven research into more efficient hydrogen isotope separation technologies. Quantum sieving techniques, such as Kinetic Quantum Sieving (KQS) and Chemical-Affinity Quantum Sieving (CAQS), have been proposed as alternatives to conventional, energy-intensive methods. However, commercially viable technologies remain undeveloped. In this study, we synthesized Na-GIS-type zeolites (NG zeolites) and Cu-exchanged Na-GIS-type zeolites (CNG zeolites) with a flexible framework and narrow pore size to explore the potential of structural variations for hydrogen isotope separation. The Cu-ion exchange significantly improved the desorption temperature and overall performance, especially for D₂ uptake. At 25 K, 100 mbar, and 10 min, CNG zeolite showed a separation factor of 11.56 (2.23 mmol/g), outperforming NG zeolite with a separation factor of 4.74 (1.13 mmol/g). Furthermore, NG zeolite exhibited a synthesis cost of £57,075 per gram and a space–time yield of 9.72 × 10⁻² g/(day·m³), demonstrating its potential for commercial application. This research highlights the promise of using zeolite structural variations for scalable and economically viable hydrogen isotope separation.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"89 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}