Applied Surface Science最新文献_第8页

Defect-activated anatase TiO2 surfaces for enhanced capture of bisphenol S and sulfolane: A coupled DFT and SCC-DFTB analysis 缺陷激活锐钛矿TiO2表面增强双酚S和亚砜的捕获：耦合DFT和SCC-DFTB分析

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-22 DOI: 10.1016/j.apsusc.2025.163601

Hassane Lgaz , Mouslim Messali , Eno E. Ebenso , Han-seung Lee

{"title":"Defect-activated anatase TiO2 surfaces for enhanced capture of bisphenol S and sulfolane: A coupled DFT and SCC-DFTB analysis","authors":"Hassane Lgaz , Mouslim Messali , Eno E. Ebenso , Han-seung Lee","doi":"10.1016/j.apsusc.2025.163601","DOIUrl":"10.1016/j.apsusc.2025.163601","url":null,"abstract":"<div><div>Titanium dioxide (TiO<sub>2</sub>) has emerged as a vital nanomaterial for environmental remediation, yet the adsorption mechanisms of persistent contaminants such as Bisphenol S (BisS) and Sulfolane (SulF) remain insufficiently understood. In this study, a hybrid computational framework; combining quantum chemical methods, COSMO-RS modeling, and self-consistent charge density-functional tight-binding (SCC-DFTB) simulations, was employed to investigate how BisS and SulF interact with pristine and oxygen-vacancy-modified anatase TiO<sub>2</sub>. Chemical reactivity descriptors highlighted BisS’s greater propensity for electron donation and acceptance, while SulF’s sulfone group emerged as a localized site for bonding. The COSMO-RS results revealed both molecules to be strong hydrogen-bond acceptors, pointing to robust polar interactions under aqueous conditions. SCC-DFTB calculations showed enhanced adsorption on defect-rich surfaces, with BisS exhibiting binding energies of –2.39 eV (defected) and –2.05 eV (pristine), whereas SulF binds with –1.91 eV and –1.18 eV, respectively. Projected density of states (PDOS) analyses indicated significant orbital mixing and peak broadening upon adsorption, emphasizing how surface defects can intensify pollutant–TiO<sub>2</sub> interactions. Overall, these findings demonstrate that molecular functionalities and lattice vacancies synergistically control adsorption strength, offering a pathway for targeted pollutant removal strategies.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163601"},"PeriodicalIF":6.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113483","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}

引用次数: 0

Hydroxyapatite and magnetic hydroxyapatite biochar from pine nut husks for anionic azo dye adsorption: Performance and reusability assessment 从松子壳中提取的羟基磷灰石和磁性羟基磷灰石生物炭用于阴离子偶氮染料吸附：性能和可重用性评估

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-22 DOI: 10.1016/j.apsusc.2025.163607

Hyeok Jin Kim , Jong Wan Han , Jin Ho Yu , Jinwoo Kwak , Changgil Son , Byung-Moon Jun , Kangmin Chon

{"title":"Hydroxyapatite and magnetic hydroxyapatite biochar from pine nut husks for anionic azo dye adsorption: Performance and reusability assessment","authors":"Hyeok Jin Kim , Jong Wan Han , Jin Ho Yu , Jinwoo Kwak , Changgil Son , Byung-Moon Jun , Kangmin Chon","doi":"10.1016/j.apsusc.2025.163607","DOIUrl":"10.1016/j.apsusc.2025.163607","url":null,"abstract":"<div><div>This study examines the effects of hydroxyapatite (HAP) and magnetic HAP-modified pine nut husk biochar (PB) on the adsorption and removal of anionic synthetic dyes [i.e., Eriochrome Black T (EBT) and Congo Red (CR)]. HAP and magnetic HAP modification significantly improved the pore structure. The removal efficiency of EBT and CR on PB, PB<sub>H</sub>, and PB<sub>H-Fe</sub> was as follows: (i) Q<sub>max</sub> of EBT: PB = 1.24 mg/g, PB<sub>H</sub> = 46.06 mg/g, PB<sub>H-Fe</sub> = 40.77 mg/g, and (ii) Q<sub>max</sub> of CR: PB = 1.18 mg/g, PB<sub>H</sub> = 62.96 mg/g, PB<sub>H-Fe</sub> = 57.89 mg/g. These results demonstrate that HAP modification substantially enhances the adsorption capacities of EBT and CR. This is because the removal of EBT and CR by PB was primarily governed by hydrogen bonding interactions, whereas adsorption by PB<sub>H</sub> and PB<sub>H-Fe</sub> was attributed to electrostatic interactions and ion exchange involving phosphate and calcium components of HAP. In addition, PB<sub>H-Fe</sub> exhibited a recovery rate exceeding 90 % due to its magnetic properties after the adsorption of EBT and CR. Overall, magnetic HAP modification presents a practical and efficient approach to enhance both the removal and reusability of PB for anionic synthetic dye removal.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"707 ","pages":"Article 163607"},"PeriodicalIF":6.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122401","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}

引用次数: 0

Environmentally friendly separation of monazite and fluorite using carboxymethyl cellulose and octyl hydroxamic acid: Experimental and DFT calculations 使用羧甲基纤维素和辛羟肟酸对独居石和萤石的环境友好分离：实验和DFT计算

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-22 DOI: 10.1016/j.apsusc.2025.163606

Quankun Liu , Rui Han , Liu Jie , Peng Gao , Xiao Wang , Zhidong Tang

{"title":"Environmentally friendly separation of monazite and fluorite using carboxymethyl cellulose and octyl hydroxamic acid: Experimental and DFT calculations","authors":"Quankun Liu , Rui Han , Liu Jie , Peng Gao , Xiao Wang , Zhidong Tang","doi":"10.1016/j.apsusc.2025.163606","DOIUrl":"10.1016/j.apsusc.2025.163606","url":null,"abstract":"<div><div>Fluorite, as the predominant calcium-bearing vein mineral in monazite-containing ores, presents significant challenges in selective separation due to its similar surface properties to monazite. This study demonstrates that carboxymethyl cellulose (CMC) effectively inhibits fluorite while allowing selective flotation of monazite using the biodegradable collector octyl hydroxamic acid (OHA). Micro-flotation tests revealed a remarkable recovery difference of 92.31 % between monazite and fluorite in single-mineral systems. Specifically, under the proposed reagent scheme (OHA as collector and CMC as depressant), the flotation recoveries of monazite and fluorite were 95.40 % and 3.09 %, respectively. In contrast, using a conventional reagent system (mixed collector of OHA and OP10, with EDTA as depressant), the recoveries of monazite and fluorite were 80.01 % and 29.51 %, respectively, with a flotation recovery difference of only 50.50 %. Artificial mixed-mineral tests under optimized conditions achieved a monazite concentrate grading 61.15 % rare earth oxides (REO) with 87.69 % recovery. Characterizations via contact angle measurements, zeta potential analysis, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and density functional theory (DFT) calculations confirmed strong preferential adsorption of CMC on fluorite surfaces via Ca-O bonding. This adsorption mechanism effectively prevents OHA attachment on fluorite while maintaining monazite’s floatability. This work provides insights into the efficiency and environmentally benign separation of monazite from fluorite (calcium-bearing vein materials).</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163606"},"PeriodicalIF":6.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113360","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}

引用次数: 0

Bioinspired mechanically tough, high Adhesion, and healable polyurethane coating for high-temperature anti-corrosion and anti-cavitation applications 仿生机械坚韧，高附着力，可愈合聚氨酯涂层高温防腐和防空化应用

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163584

Haoran Xu , Shunli Wang , Kaijing Hu , Haixu Dou , Pengpeng Lu , Jianfu Wang , Yinsheng Li , Huichao Jin , Limei Tian , Luquan Ren

{"title":"Bioinspired mechanically tough, high Adhesion, and healable polyurethane coating for high-temperature anti-corrosion and anti-cavitation applications","authors":"Haoran Xu , Shunli Wang , Kaijing Hu , Haixu Dou , Pengpeng Lu , Jianfu Wang , Yinsheng Li , Huichao Jin , Limei Tian , Luquan Ren","doi":"10.1016/j.apsusc.2025.163584","DOIUrl":"10.1016/j.apsusc.2025.163584","url":null,"abstract":"<div><div>High-temperature corrosion in marine environments demands advanced protective coatings. Inspired by spider silks and mussels, a mechanically tough, high adhesion and healable polyurethane composite coating (PU-FM) was developed. Specifically, a chain extender (FA-FGE diol) rich in multiple Diels-Alder (DA) furan rings was developed to determine the optimal PU matrix, combined with 1 wt% dopamine-modified multi-walled carbon nanotubes. The abundant DA bonds not only provide thermal stability and compactness of the polymer chain for high-temperature anti-corrosion, but also support the compatibility of self-healing properties. PU-FM exhibited outstanding mechanical properties, with a high toughness of 356MJ·m<sup>−3</sup>, strength of 72 MPa, and adhesion of 16.2 MPa. After 60 h of cavitation, average corrosion depths of PU-FM were only 3.4 nm (20℃) and 8.4n m (80℃). The |Z|<sub>0.01Hz</sub> values of PU-FM maintained 1.111 × 10<sup>9</sup> Ω·cm<sup>2</sup> (20℃) and 7.361 × 10<sup>7</sup> Ω·cm<sup>2</sup> (80℃) after exposed to 3.5 wt% NaCl solutions for 30 d. Moreover, PU-FM also demonstrated 93 % self-healing efficiency under near-infrared light for 90 s, retaining 81 % after three cycles. This approach, combining DA bond-rich chain extenders with nanofiller reinforcement, offers a novel solution for high-temperature anti-corrosion and self-healing coatings, addressing critical challenges in marine and industrial applications.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163584"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104230","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}

引用次数: 0

Enhancing combustion and antioxidant properties of aluminum-lithium alloys with polytetrafluoroethylene and paraffin WAX coatings 聚四氟乙烯和石蜡蜡涂层增强铝锂合金的燃烧和抗氧化性能

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163585

Xuanyan Liu, Shuo Wang, Jiaxing Wang, Hongdi Fu, Kangcheng Xu, Xiaodong Li, Tinglu Song, Meishuai Zou

{"title":"Enhancing combustion and antioxidant properties of aluminum-lithium alloys with polytetrafluoroethylene and paraffin WAX coatings","authors":"Xuanyan Liu, Shuo Wang, Jiaxing Wang, Hongdi Fu, Kangcheng Xu, Xiaodong Li, Tinglu Song, Meishuai Zou","doi":"10.1016/j.apsusc.2025.163585","DOIUrl":"10.1016/j.apsusc.2025.163585","url":null,"abstract":"<div><div>Aluminum-lithium alloys (Al-Li alloys) have gained prominence in recent years as promising alternatives to aluminum powders, attributed to their superior thermal and combustion characteristics. However, the high reactivity of Al-Li alloys poses significant challenges to their stability and compatibility with other materials. This study utilized high-energy ball milling to modify Al-Li alloys by incorporating polytetrafluoroethylene (PTFE) and paraffin wax (WAX) as functional coatings. Thermal analysis of Al-Li/PTFE composites revealed a marked reduction in the thermal oxidative exothermic peak temperature with the addition of 10 % and 15 % PTFE, accompanied by enthalpy increases of 1.49 and 2.1 times, respectively. Combustion processes captured using a high-speed camera demonstrated that increasing the PTFE content from 10 % to 30 % intensified the combustion and reduced combustion duration by 50 %. The agglomeration of combustion residues also decreased. Furthermore, incorporating WAX through ball milling facilitated high-temperature phase transformations, producing Al-Li/10PTFE/2WAX composite powders with enhanced antioxidant properties, as evidenced by a contact angle of 131.15°, and improved compatibility. The findings offer a pathway for achieving tunable combustion performance in Al-Li alloys while addressing critical issues related to the storage and processing of these powders for practical applications.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"707 ","pages":"Article 163585"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104044","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}

引用次数: 0

Hierarchical TiO2@carbon nanofiber aerogels with enhanced visible-light photocatalytic performance for environmental remediation 具有增强可见光催化性能的纳米纤维气凝胶用于环境修复

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163541

Jintao Zhou , Jiaqi Zhao , Enjie Wu , Yuanjun Liu , Xupin Zhuang

{"title":"Hierarchical TiO2@carbon nanofiber aerogels with enhanced visible-light photocatalytic performance for environmental remediation","authors":"Jintao Zhou , Jiaqi Zhao , Enjie Wu , Yuanjun Liu , Xupin Zhuang","doi":"10.1016/j.apsusc.2025.163541","DOIUrl":"10.1016/j.apsusc.2025.163541","url":null,"abstract":"<div><div>Developing efficient visible-light-driven photocatalysts for environmental remediation remains challenging due to the limited light utilization and rapid charge recombination in traditional TiO<sub>2</sub>-based materials. Herein, we report a facile approach to fabricate hierarchical TiO<sub>2</sub>@carbon nanofiber aerogels (TiO<sub>2</sub>@CNFAs) with uniformly distributed TiO<sub>2</sub> nanoparticles on a carbon nanofiber skeleton. The unique hierarchical structure provides extensive surface area (up to 153.7 m<sup>2</sup>/g) and intimate TiO<sub>2</sub>/carbon interfacial contact, while the rational band structure design effectively narrows the bandgap to 2.33 eV for enhanced visible light absorption. The optimized interface engineering leads to remarkably improved charge separation efficiency, evidenced by a 16-fold increase in photocurrent density (3.63 μA/cm<sup>2</sup>) and extended carrier lifetime (4.22 ns). These advantages enable superior photocatalytic performance with over 90 % removal efficiency for three dyes (Methylene Blue, Congo Red, and Rhodamine B) and one antibiotic (Tetracycline) under xenon lamp irradiation, and achieving 93.69 % degradation of Rhodamine B under natural sunlight within 240 min. This work provides a promising strategy for designing efficient visible-light-driven photocatalysts for environmental applications.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"707 ","pages":"Article 163541"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113491","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}

引用次数: 0

Adsorption-induced lattice weakening: understanding the mechanism of cysteine-accelerated pyrite oxidation 吸附诱导的晶格弱化：了解半胱氨酸加速黄铁矿氧化的机理

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163594

Tong Liu , Yutian Hu , Nan Chen , Hongrui Ding , Chuanping Feng , Wang Lu

{"title":"Adsorption-induced lattice weakening: understanding the mechanism of cysteine-accelerated pyrite oxidation","authors":"Tong Liu , Yutian Hu , Nan Chen , Hongrui Ding , Chuanping Feng , Wang Lu","doi":"10.1016/j.apsusc.2025.163594","DOIUrl":"10.1016/j.apsusc.2025.163594","url":null,"abstract":"<div><div>Pyrite (FeS<sub>2</sub>) oxidation is pivotal but often hindered by passivation. Cysteine (Cys) accelerates this oxidation and overcomes passivation, though the mechanism is debated. This study combines electrochemistry and DFT to reveal Cys acts primarily by weakening the pyrite lattice upon adsorption. Electrochemical results confirm Cys uniquely eliminates passivation and enhances interfacial charge dynamics. Crucially, DFT calculations (via COHP analysis) show Cys chemisorption through an interfacial Fe-S bond reconfigures pyrite’s electronic structure, occupying anti-bonding states of adjacent Fe-S lattice bonds below the Fermi level. This directly indicates weakening of these lattice bonds near the adsorption site. We propose this lattice destabilization, lowering the energy barrier for atom removal, is the primary mechanism for Cys-accelerated oxidation, rather than solely enhanced charge transfer or passivation prevention. These findings offer new atomic-level insight into organic modulation of mineral reactivity via substrate bond alteration, impacting biogeochemistry, bioleaching, and materials science.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163594"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113487","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}

引用次数: 0

Tuning Mn-based ion sieves via different valence cation substitution (Na+/Mg2+/Al3+) for enhanced Li+ separation 通过不同价离子取代（Na+/Mg2+/Al3+）调整mn基离子筛以增强Li+的分离

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163591

Zhaxi Cuo , Xiaoyan Liu , Renzhen Wangjia , Likun Chang , Dongdong Wang

{"title":"Tuning Mn-based ion sieves via different valence cation substitution (Na+/Mg2+/Al3+) for enhanced Li+ separation","authors":"Zhaxi Cuo , Xiaoyan Liu , Renzhen Wangjia , Likun Chang , Dongdong Wang","doi":"10.1016/j.apsusc.2025.163591","DOIUrl":"10.1016/j.apsusc.2025.163591","url":null,"abstract":"<div><div>A series of metal ion (Na<sup>+</sup>, Mg<sup>2+</sup>, Al<sup>3+</sup>)-doped lithium manganese oxides (LMOs) were synthesized via sol–gel synthesis coupled with controlled calcination for enhanced lithium extraction applications. Structural characterization through XRD, SEM, TEM and BET surface area analysis revealed well-defined cubic spinel structures (Fd-3 m space group) with octahedral coordination geometry and hierarchical mesoporosity. Adsorption evaluations using LiCl solutions demonstrated that cation doping significantly enhanced lithium uptake capacities. The optimized materials demonstrated respective Li<sup>+</sup> adsorption capacities of 26.71, 27.47, and 32.95 mg g<sup>−1</sup> for Na<sup>+</sup>-, Mg<sup>2+</sup>-, and Al<sup>3+</sup>-modified LMOs, representing 2.4 %, 5.4 %, and 22.5 % improvements over the pristine LMO (26.07 mg g<sup>−1</sup>). Notably, the Al<sup>3+</sup>-modified adsorbent (LMO-Al) exhibited exceptional cycling stability, retaining 86.33 % of initial capacity through five adsorption–desorption cycles – significantly higher than the 79.85 % retention observed in pristine LMO. After 5 adsorption/desorption cycles, the Mn dissolution loss of HMO-Al was 1.25 %, and it was smaller than that of 2.34 % for HMO. This enhanced performance can be attributed to the superior crystallinity, abundant chemically adsorbed oxygen and higher average valence state of manganese which effectively reduced the content of Mn<sup>3+</sup> in the lithium-ion sieve, thereby suppressing the Jahn-Teller effect and the disproportionation reaction of Mn<sup>3+</sup> in LMO-Al. These findings provide fundamental insights into structure–property relationships in lithium ion sieves while guiding the rational design of high-performance adsorbents for sustainable lithium extraction from saline resources.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163591"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104259","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}

引用次数: 0

Rational construction of multilayer NiCo-MOF@MnO2 heterostructures with optimized charge storage behavior for asymmetric supercapacitors 非对称超级电容器多层NiCo-MOF@MnO2异质结构的合理构建及优化电荷存储行为

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163595

Jien Li , Rongling Du , Ruipeng Wang , Jinglv Feng , Shuang Luo

{"title":"Rational construction of multilayer NiCo-MOF@MnO2 heterostructures with optimized charge storage behavior for asymmetric supercapacitors","authors":"Jien Li , Rongling Du , Ruipeng Wang , Jinglv Feng , Shuang Luo","doi":"10.1016/j.apsusc.2025.163595","DOIUrl":"10.1016/j.apsusc.2025.163595","url":null,"abstract":"<div><div>Manganese dioxide (MnO<sub>2</sub>) is a promising supercapacitor electrode material with its high theoretical capacitance, abundant resources, and eco-friendliness. However, poor ion transport and volume expansion during cycling hinder its practical performance. In contrast, metal–organic frameworks (MOFs) provide extensive surface area and structural versatility but suffer from low intrinsic conductivity, limiting their direct application as electrodes. Here, a MOF-derived NiCo-MOF@MnO<sub>2</sub> heterostructure is successfully anchored onto activated carbon cloth (AC) to prepare a self-supported electrode (NCM@MO-1) through a rational synthetic regulation strategy. The NCM@MO-1 electrode presents a unique overlapping massive nanostructure conducive to exposing more active sites and shortening the diffusion path of electrolyte ions. Owing to its optimized structure and composition, the NCM@MO-1 electrode exhibits improved specific capacitance of 15.2 F/cm<sup>2</sup> at 2 mA/cm<sup>2</sup> and ultrahigh rate performance of 65 % at 50 mA/cm<sup>2</sup>. Moreover, the NCM@MO-1//annealed AC (AAC) asymmetric supercapacitor (ASC) achieves a superb energy density of 1.191 mWh/cm<sup>2</sup> at 1.715 mW/cm<sup>2</sup> and an exceptional cycle durability (about 85.67 % retention over 10,000 cycles). The meticulously prepared NCM@MO-1 electrode presents significant potential for diverse applications, especially in the realm of high-performance supercapacitors, where the material is poised to serve as a key enabler for next-generation devices.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163595"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113484","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}

引用次数: 0

Synthesis of transparent and flexible superhydrophobic PDMS-EP/SiO2 coating with excellent mechanical and chemical durability 具有优异机械和化学耐久性的透明柔性超疏水性PDMS-EP/SiO2涂层的合成

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163586

Jianfang Sun , Yong Chen , Ji Li , Jingying Su , Shengpeng Huang , Yanan Zhang , Fenghua Su

{"title":"Synthesis of transparent and flexible superhydrophobic PDMS-EP/SiO2 coating with excellent mechanical and chemical durability","authors":"Jianfang Sun , Yong Chen , Ji Li , Jingying Su , Shengpeng Huang , Yanan Zhang , Fenghua Su","doi":"10.1016/j.apsusc.2025.163586","DOIUrl":"10.1016/j.apsusc.2025.163586","url":null,"abstract":"<div><div>Superhydrophobic (SHP) coatings with transparency, flexibility, and self-cleaning properties are highly desirable for many applications. However, developing SHP coatings with excellent mechanical and chemical durability remains a challenge. In this work, the epoxy resin (EP) was modified with hydroxy-terminated polydimethylsiloxane (HO-PDMS) to improve its hydrophobicity and flexibility. Nano-silica (SiO<sub>2</sub>) was added as reinforcing filler to prepare the PDMS-EP/SiO<sub>2</sub> coating. The coatings exhibited superhydrophobicity with a high water contact angle (WCA) of 155.5 ± 2.8° and a sliding angle (SA) less than 1° when the loading mass of nano-silica was 0.2 g. The coating maintained superhydrophobicity after 600 cm continuous rubbing by sandpaper, suggesting that the coating had remarkable mechanical durability. The coating also exhibited superior chemical stability because it retained strong hydrophobic property after immersing in strong acid and alkali solutions. Interestingly, the coating exhibited high transparency with an average transmittance of 80.7 % and outstanding flexibility as confirmed by bending-torsion tests. Moreover, the as-prepared coating also showed strong self-cleaning properties for effectively removing dust pollutants and excellent resistance to wetting from various liquids. It is believed that the facile and economical method offers an effective strategy and promising industrial applications for fabricating transparent, flexible and chemically stable superhydrophobic coatings.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"707 ","pages":"Article 163586"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113486","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}

引用次数: 0