Applied Surface Science最新文献

Isotropic performance of surface acoustic wave resonators based on ε-Ga2O3(001) thin films 基于ε-Ga2O3（001）薄膜表面声波谐振器的各向同性性能

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-01 DOI: 10.1016/j.apsusc.2025.163959

Junhao Chen, Chenhong Huang, Tiecheng Luo, Yujia Tu, Xifu Chen, Zhuo Yang, Hongtai Luo, Gang Wang, Xing Lu, Zimin Chen

{"title":"Isotropic performance of surface acoustic wave resonators based on ε-Ga2O3(001) thin films","authors":"Junhao Chen, Chenhong Huang, Tiecheng Luo, Yujia Tu, Xifu Chen, Zhuo Yang, Hongtai Luo, Gang Wang, Xing Lu, Zimin Chen","doi":"10.1016/j.apsusc.2025.163959","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163959","url":null,"abstract":"Epsilon-phase gallium oxide (ε-Ga2O3) thin film is an emerging piezoelectric semiconductor for the application in RF resonators. Compared with traditional thin films such as AlN (d33≈5 pm/V), ε-Ga2O3 possesses a high piezoelectric coefficient (d33≈11 pm/V). As a material belonging to the orthorhombic crystal system, ε-Ga2O3 is theoretically expected to exhibit anisotropic properties on the (001) plane. However, in this study, a comprehensive investigation on the angular dependence of surface acoustic wave (SAW) propagation properties reveals that the ε-Ga2O3(001) plane is actually highly isotropic. Measurements of electrostatic, mechanical, and thermomechanical characteristics along different in-plane directions on ε-Ga2O3(001) present standard deviation smaller than 3 %. The dielectric constant of ε-Ga2O3 is extracted to be 11.7 ± 0.1 by the capacitance measurement. Phase velocity and the temperature coefficient of frequency (TCF) for ε-Ga2O3 SAW resonators are determined to be 3169 ± 4 m/s and −58.9 ± 1.7 ppm/°C for Rayleigh mode, while it is 5319 ± 11 m/s and −58.9 ± 1.2 ppm/°C for Sezawa mode. The abnormal isotropy of the orthorhombic ε-Ga2O3 is explained by the existence of triple rotational domains. The results provide critical basic parameters for the future development and application in ε-Ga2O3-based SAW devices.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"8 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144521044","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

A printed flexible broad-band THz absorber based on 2D Ti3C2Tx MXene 基于二维Ti3C2Tx MXene的印刷柔性宽带太赫兹吸收体

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-01 DOI: 10.1016/j.apsusc.2025.163956

Chenghong Zhang, Tianyue Xu, Xiaolian Chen, Wei Ding, Wei Wang, Jialiang Luo, Wenming Su, Chuanfang Zhang, Zhigao Sheng

{"title":"A printed flexible broad-band THz absorber based on 2D Ti3C2Tx MXene","authors":"Chenghong Zhang, Tianyue Xu, Xiaolian Chen, Wei Ding, Wei Wang, Jialiang Luo, Wenming Su, Chuanfang Zhang, Zhigao Sheng","doi":"10.1016/j.apsusc.2025.163956","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163956","url":null,"abstract":"Obtaining a large-area, low-cost, broadband THz absorber is crucial for THz device research. However, due to limitations in the existing manufacturing techniques, fabrication of large-scale and broadband absorbers working on the THz frequency still remains challenging. In this study, we design a multi-frequency resonant metamaterial with a three-layer structure based on Ti3C2Tx MXene, a rising 2D family of transition metal carbides and nitrides. Large area of 170 × 170 mm2 and 840 periodic resonant substructures in three-layer are nanoimprinted on PET substrate using viscous MXene inks. The printed metamaterial exhibits over 90 % absorption across a broad frequency range of 0.4 THz to 1.48 THz, with an effective absorption bandwidth of approximately 1.08 THz. Comparative analysis confirms the superiority of the designed three-layer structure in achieving broadband strong absorption. Furthermore, extensive fatigue and THz imaging tests demonstrate that the printed low-cost, large-area flexible metamaterial not only possesses excellent anti-fatigue properties but also exhibits a significant THz stealth effect. This work will open a new insight toward developing broadband THz meta absorbers, and its promising flexibility, as well as large size demonstrate its potential in real-life applications.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"7 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144520743","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

Characterization of two types of magnetically cured microspheres for the adsorption and degradation of petroleum contaminants 两种磁固化微球对石油污染物的吸附和降解性能

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-01 DOI: 10.1016/j.apsusc.2025.163958

Tiantian He, Di Cao, Mian Xu, Jiaheng Yu, Youhang Liu, Yuhang Liu, Haiyan Shi, Liyun Yu

{"title":"Characterization of two types of magnetically cured microspheres for the adsorption and degradation of petroleum contaminants","authors":"Tiantian He, Di Cao, Mian Xu, Jiaheng Yu, Youhang Liu, Yuhang Liu, Haiyan Shi, Liyun Yu","doi":"10.1016/j.apsusc.2025.163958","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163958","url":null,"abstract":"Petroleum pollution is becoming increasingly severe, posing serious threats to the natural environment and human health. Magnetic rice husk carbon (MRHC) and magnetic carbon nanotubes (MCNT) were used as adsorption carriers, and the petroleum-degrading bacteria LD23 were selected to prepare magnetic curing microspheres. A range of analytical techniques was used to examine the physicochemical properties, bacterial activity, the adsorption performance, and the stability of the two types of magnetically cured microspheres. Density functional theory (DFT) was applied to reveal the adsorption mechanisms of two magnetic materials, MCNT and MRHC, on petroleum pollutants. The excellent adsorption performance of MCNT is mainly attributed to high chemical activity and electron jump effect, while MRHC exhibits significant electrostatic adsorption property. The degradation kinetics were determined to verify the petroleum degradation effect of magnetically cured microspheres. The results showed that MCNT-MS had a superior specific surface area, pore size, pore volume, and magnetic response. The maximum adsorption capacity of MCNT-MS is 1.61 times greater than that of MRHC-MS. Moreover, the distribution and activity of petroleum-degrading bacteria were also better than on MRHC-MS. The degradation kinetics of MCNT-MS follow a second-order reaction, with a degradation rate that is 11.48% higher than that of MRHC-MS.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"10 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144521048","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

Facile construction of 2D/2D δ-Bi2O3/Cu2ZnSnS4 heterojunction with the immobilization on gel beads for the photocatalysis 2D/2D δ-Bi2O3/Cu2ZnSnS4异质结的快速构建及凝胶珠固定化光催化

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-01 DOI: 10.1016/j.apsusc.2025.163962

Haixin Li, Qiushi Wu, Fenglan Peng, Yuyue Tao, Yucheng Huang, Lin Zhou, Wenjin Yue

{"title":"Facile construction of 2D/2D δ-Bi2O3/Cu2ZnSnS4 heterojunction with the immobilization on gel beads for the photocatalysis","authors":"Haixin Li, Qiushi Wu, Fenglan Peng, Yuyue Tao, Yucheng Huang, Lin Zhou, Wenjin Yue","doi":"10.1016/j.apsusc.2025.163962","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163962","url":null,"abstract":"In this paper, a novel 2D/2D photocatalyst of δ-Bi2O3/Cu2ZnSnS4 (BO/CZTS) heterojunction was constructed to enhance the photocatalysis, with its immobilization for improved reusability further. Initially, BO with nanoflakes-assembled net-like structure was prepared with microwave-solvothermal method. Subsequently, epitaxial growth of CZTS nanoflakes was conducted on surface modified BO by 3-mercaptopropionic acid (MPA), which inserted into BO network to form a staggered stacked net-like architecture. The presence of MPA generated additional interaction with Rhodamine B (RhB) for increased adsorption. 2D/2D BO/CZTS heterojunction not only provided the favorable energy level for S-scheme charge transfer but also increased the interface area, contributing to effective charge separation for the decomposition. Therefore, BO/CZTS heterojunction displayed obviously enhanced photocatalysis than individual BO and CZTS. To improve the reusability of photocatalysts, the hydrogel substrate with sodium alginate (SA) and polyvinyl alcohol (PVA) was used to immobilize BO/CZTS heterojunction to form SA/PVA − BO/CZTS gel beads. The gel beads displayed excellent structural stability, including resistance to stress–strain, high temperature, acid, alkali and oxidants. Moreover, the abundant and uniformly distributed pores within the gel beads facilitated the mass transfer of pollutants. SA/PVA − BO/CZTS gel beads as the macroscopic-scaled photocatalysts displayed potential in the construction of photocatalytic reactor to apply in the practical wastewater treatment.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"25 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144521049","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

All-alumina quarter-wave plate coatings fabricated by glancing angle deposition using serial bideposition 用连续双沉积法制备全氧化铝四分之一波板涂层

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-01 DOI: 10.1016/j.apsusc.2025.163957

Solène Bertet, Marcela Mireles, Sara MacNally, Marine Chorel, Éric Lavastre, Daniel Sadowski, Corinne Marcel, Bruno Gallas

{"title":"All-alumina quarter-wave plate coatings fabricated by glancing angle deposition using serial bideposition","authors":"Solène Bertet, Marcela Mireles, Sara MacNally, Marine Chorel, Éric Lavastre, Daniel Sadowski, Corinne Marcel, Bruno Gallas","doi":"10.1016/j.apsusc.2025.163957","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163957","url":null,"abstract":"Anisotropic phase retarders, used in high power laser facilities to perform polarization smoothing, can be obtained by the glancing angle deposition (GLAD) coating process. Due to its high laser resistance, the coatings are mainly made of silica. Therefore, limited attention has been given to other dielectric materials. Here we present a study on alumina GLAD anisotropic coatings; a material with high laser resistance, higher birefringence and lower environmental sensitivity than silica. Since the anisotropy is related to the coatings microstructure through the deposition angle, samples were coated at angles varying from ± 68° to ± 82° using the serial bideposition technique. They were characterized by ellipsometry, polarimetry, spectrophotometry and electron microscopy. We showed that the highest birefringence is obtained at a deposition angle of ± 76° with an in-plane value of 0.053. Based on these results, a quarter-wave plate at 351 nm was designed as a multilayer with seven pairs of anisotropic layers deposited at ± 76° and isotropic layers deposited at 0°. The fabricated coating exhibited a uniform retardance of 88.51 ± 0.45 nm. The alumina GLAD wave plates presented here, open the door to new possibilities in the laser field and especially in the field of fusion energy.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"23 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144520741","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

Selective CO2 and CO electroreduction to C2–C7 hydrocarbons on Pd–Au electrodes: Role of interfacial impedance and CO adsorption modulation 钯金电极上CO2和CO选择性电还原为C2-C7碳氢化合物：界面阻抗和CO吸附调制的作用

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-06-30 DOI: 10.1016/j.apsusc.2025.163939

Hyeonji Lee , Seon Young Hwang , Gaeun Yun, So Young Kim, Hui Eun Shim, Choong Kyun Rhee, Youngku Sohn

{"title":"Selective CO2 and CO electroreduction to C2–C7 hydrocarbons on Pd–Au electrodes: Role of interfacial impedance and CO adsorption modulation","authors":"Hyeonji Lee , Seon Young Hwang , Gaeun Yun, So Young Kim, Hui Eun Shim, Choong Kyun Rhee, Youngku Sohn","doi":"10.1016/j.apsusc.2025.163939","DOIUrl":"10.1016/j.apsusc.2025.163939","url":null,"abstract":"<div><div>Electrochemical reduction of CO2 and CO was systematically studied using bare Pd and Au-modified Pd electrodes in KHCO3 and phosphate electrolytes to explore the impact of electrode composition and electrolyte environment on product selectivity and reaction kinetics. CO and H2 were the dominant gaseous products, with minor CH4 and C2+ hydrocarbons detected. Formate and methanol were observed only under CO2 conditions. Au incorporation into Pd significantly enhanced hydrocarbon formation—by more than 10 times—particularly in phosphate electrolyte, by weakening CO binding and promoting intermediate desorption. The use of phosphate electrolyte increased the C2+ Faradaic efficiency by over 8-fold compared to KHCO3. Anderson–Schulz–Flory analysis confirmed Fischer–Tropsch-like behavior up to C7 hydrocarbons, with alkenes showing higher chain growth probability than alkanes. Electrochemical impedance spectroscopy revealed that KHCO3 induces higher charge transfer and interfacial resistance, likely due to strong CO adsorption, whereas phosphate promotes more favorable interfacial kinetics. Au deposition further reduced interfacial resistance and modulated double-layer capacitance, depending on electrolyte pH and applied potential. Spectroscopic characterization confirmed that Au modified the electronic structure of Pd, stabilizing the active surface under reductive conditions. These findings highlight the synergistic effects of Au alloying and phosphate electrolytes in optimizing CO2/CO electroreduction toward long-chain hydrocarbon production.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"710 ","pages":"Article 163939"},"PeriodicalIF":6.3,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144516304","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

Enhanced visible light photocatalytic degradation of oxytetracycline hydrochloride using heterojunction BiOBr/TiO2 composites 异质结BiOBr/TiO2复合材料增强可见光催化降解盐酸土霉素

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-06-30 DOI: 10.1016/j.apsusc.2025.163945

Caixia Deng , Shuang Li , JiaYu Wang , Yingying Li , Jian Chen , Fenglin Tang , Xiupei Yang

{"title":"Enhanced visible light photocatalytic degradation of oxytetracycline hydrochloride using heterojunction BiOBr/TiO2 composites","authors":"Caixia Deng , Shuang Li , JiaYu Wang , Yingying Li , Jian Chen , Fenglin Tang , Xiupei Yang","doi":"10.1016/j.apsusc.2025.163945","DOIUrl":"10.1016/j.apsusc.2025.163945","url":null,"abstract":"<div><div>Type II heterojunction photocatalysts were fabricated by compositing BiOBr with TiO2, with samples labeled BiOBr/TiO2-1 to BiOBr/TiO2-5 (the number denotes the mass of TiO2 in mg used during synthesis). Among these, BiOBr/TiO2-2 (containing 100 mg TiO2) exhibited optimal visible-light photocatalytic performance for oxytetracycline hydrochloride (OTC) degradation, achieving 94.38 % removal within 60 min. High-resolution transmission electron microscopy (HRTEM) confirmed successful composite formation through the observation of dual lattice spacings (0.28 nm for BiOBr (110) and 0.35 nm for TiO2). This composite displayed a superior degradation rate constant of 0.04757 min−1, exceeding those of pristine BiOBr and TiO2 by factors of 2 and 14, respectively. The enhanced activity was attributed to effective charge separation enabled by the Type II heterojunction structure. Radical trapping experiments combined with electron paramagnetic resonance (EPR) analysis identified photogenerated holes (h+) and superoxide radicals (•O2−) as the dominant reactive species. HPLC–MS analysis revealed degradation intermediates, and toxicity assessment predicted progressive detoxification during the process. This study demonstrated that BiOBr/TiO2-2 is a stable and efficient photocatalyst with significant potential for antibiotic wastewater treatment.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"710 ","pages":"Article 163945"},"PeriodicalIF":6.3,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144516309","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

Ordered mesoporous MoC and Pt-MoC as co-catalysts for photocatalytic hydrogen production 有序介孔MoC和Pt-MoC作为光催化制氢的共催化剂

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-06-30 DOI: 10.1016/j.apsusc.2025.163930

Tingting Gu , Jie Chen , Wu Zou, Xiaomei Yang, Chen Shao, Shengzhou Cai, Xiaozhong Wang, Qingfeng Yang, Yingtao Liu, Xin Wang, Xiaoyong Lai

{"title":"Ordered mesoporous MoC and Pt-MoC as co-catalysts for photocatalytic hydrogen production","authors":"Tingting Gu , Jie Chen , Wu Zou, Xiaomei Yang, Chen Shao, Shengzhou Cai, Xiaozhong Wang, Qingfeng Yang, Yingtao Liu, Xin Wang, Xiaoyong Lai","doi":"10.1016/j.apsusc.2025.163930","DOIUrl":"10.1016/j.apsusc.2025.163930","url":null,"abstract":"<div><div>Slow reaction kinetics intrinsically limits the efficiency of semiconductor-based photocatalytic hydrogen generation and suitable cocatalysts are highly desired. Molybdenum carbide (MoC) is viewed as a promising Pt-like catalyst or support for hydrogen evolution reaction but usually suffers from low active surface area in traditional high-temperature carburization. Herein, we present an ordered mesoporous MoC featuring both large mesopores (11 nm) and ultrathin frameworks (∼5 nm), which provide a substantial surface area (108 m2·g−1) for loading Pt co-catalysts and constructing an efficient heterostructure in combination with ultrathin ZnIn2S4 (ZIS) nanosheets. The resultant Pt-MoC@ZIS heterostructure showed a significantly improved hydrogen evolution (0.357 mmol·h−1) with an apparent quantum efficiency (AQE) of 85.9% at 395 nm and decreased Pt dose (0.11 wt%) over the directly Pt-loaded ZIS, which should be attributed to the enhanced mass activity of Pt well-dispersed on conductive MoC frameworks for facilizing surface reaction, boosted carrier separation and reduced ZIS aggregation from the heterostructure for inhibiting bulk and surface recombination. This study may offer valuable insights for developing efficient low Pt or even Pt-free photocatalysts.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"710 ","pages":"Article 163930"},"PeriodicalIF":6.3,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144516310","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 design of core–shell nanofibers structure integrated with cobalt sulfide catalyst for high-performance lithium-sulfur batteries 高性能锂硫电池核壳纳米纤维结构与硫化钴催化剂的合理设计

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-30 DOI: 10.1016/j.apsusc.2025.163944

Dan Wang, Xiaoni Zhao, Jing Lan, Peng Zhang, Guosheng Shao, Fujun Miao

{"title":"Rational design of core–shell nanofibers structure integrated with cobalt sulfide catalyst for high-performance lithium-sulfur batteries","authors":"Dan Wang, Xiaoni Zhao, Jing Lan, Peng Zhang, Guosheng Shao, Fujun Miao","doi":"10.1016/j.apsusc.2025.163944","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163944","url":null,"abstract":"The advancement of lithium-sulfur (Li-S) batteries were severely limited by the notorious “shuttle effect” and low electrochemical conversion of lithium polysulfides (LiPSs). Designing efficient electrocatalysts with core–shell structure for accelerating LiPSs conversion and manipulating redox kinetics is important. We designed an integrated sulfur cathode composed of titanium oxide-modified carbon nanofibers coated with a hollow carbon layer and integrated with cobalt sulfide nanosheets (TCF@C-CoS). TCF@C-CoS composite was fabricated through the template method and the hydrothermal method. Not only hollow structure establishes optimized channels for electron/ion conduction but also the CoS nanosheets create abundant electrochemically active sites, significantly enhancing LiPSs adsorption. Notably, the structure synergistically combining three key functionalities: physical confinement via the hollow carbon framework, polar adsorption enabled by TiO2, and catalytic conversion driven by CoS nanosheets. Therefore, the optimized Li-S batteries achieve an outstanding initial specific capacity of 1036.56 mAh g−1, maintain the capacity decay rate of 0.04 % per cycle. Additionally, even under the conditions including a sulfur loading of 7.30 mg cm−2 and lean electrolyte (E/S ratio = 6.23 μL mg−1) result in the areal capacity of 6.15 mAh cm−2 after 80 cycles. This work provides innovative perspectives on the practical application of Li-S batteries.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"22 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144516357","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

Tailored S-scheme directed NiFe-LDH/Ag2S heterojunction for visible light-driven CO2 photoconversion 用于可见光驱动CO2光转换的定制s方案导向NiFe-LDH/Ag2S异质结

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-30 DOI: 10.1016/j.apsusc.2025.163940

T. Susikumar, Harshavardhan Mohan, Manikandan Kandasamy, Brahmananda Chakraborty, Taeho Shin, M. Navaneethan, P. Justin Jesuraj

{"title":"Tailored S-scheme directed NiFe-LDH/Ag2S heterojunction for visible light-driven CO2 photoconversion","authors":"T. Susikumar, Harshavardhan Mohan, Manikandan Kandasamy, Brahmananda Chakraborty, Taeho Shin, M. Navaneethan, P. Justin Jesuraj","doi":"10.1016/j.apsusc.2025.163940","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163940","url":null,"abstract":"The photocatalytic carbon dioxide reduction reaction (PCRR) faces challenges such as weak light absorption and rapid electron-hole recombination in single-component photocatalysts. To overcome these limitations, a heterojunction was engineered by integrating two-dimensional nickel–iron layered double hydroxides (2D-NiFe-LDH) with zero-dimensional silver sulfide (0D-Ag2S) nanoparticles. The optimized heterostructure, NFAS15 (containing 15 wt% Ag2S), exhibits a sharp optical absorption edge, increased surface area, and enhanced porosity. Scanning tunneling microscopy (STM) confirms the migration of Ag and S into the LDH lattice, while X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) reveals incremented delocalized hydroxyl groups and superior charge transfer properties, underscoring its improved electronic and catalytic performance. Under visible light, NFAS15 achieves outstanding PCRR activity, producing carbon monoxide (CO) and methanol (CH3OH) at rates of 20.7 µmol g-1 h−1 and 2.9 µmol g-1 h−1, respectively. It also demonstrates 88 % selectivity for CO conversion and exceptional photostability, retaining 97 % (CO) and 96 % (CH3OH) efficiency over five irradiation cycles. Transient photoluminescence studies validate reduced charge recombination, attributed to S-scheme-mediated carrier separation. Density functional theory (DFT) further reveals that NFAS15 possesses lower energy barriers along the reaction pathway compared to pristine NiFe-LDH. This work offers sustainable CO2 conversion via an efficient S-scheme heterojunction NiFe-LDH/Ag2S.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"10 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144521047","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