Applied Surface Science最新文献_第10页

Liquid metal printing of 2D IGZO films: Composition control via competitive oxidation and enhanced device performance 液态金属印刷二维IGZO薄膜：通过竞争性氧化控制成分和增强器件性能

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-21 DOI: 10.1016/j.apsusc.2025.164115

Jiaming Guo, Shanhao Ze, Junbiao Wu, Zhiguo Zhang, Cong Luo, Fei Li, Fei Liu, Jing Li, Baodan Liu

{"title":"Liquid metal printing of 2D IGZO films: Composition control via competitive oxidation and enhanced device performance","authors":"Jiaming Guo, Shanhao Ze, Junbiao Wu, Zhiguo Zhang, Cong Luo, Fei Li, Fei Liu, Jing Li, Baodan Liu","doi":"10.1016/j.apsusc.2025.164115","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164115","url":null,"abstract":"In this study, we innovatively fabricated 2D IGZO ultrathin films with several nanometers and tunable compositions using a liquid metal alloy printing method. We systematically studied the relationship between the composition of In-Ga-Zn liquid alloys and the composition of 2D IGZO films and clarified the possible doping mechanism. It was found that the surface film composition was primarily governed by the Gibbs free energy generated from oxide formation. Importantly, Zn and Ga possess a strong and similar competitive oxidation behavior in the oxidation process of liquid InZnGa alloy, leading to the segregation of Ga2O3 and ZnO in the oxide skin of InZnGa alloy. In this case, we control the micro doping level of Zn and Ga to realize the composition tailoring of 2D IGZO films. Additionally, this study also reveals that increasing the Zn content in the film reduces the band gap width, increases channel current, and shows a trend where conductivity and carrier mobility increase. In contrast, the increases of Ga content results in an obvious decline of electrical performance for 2D IGZO films. This study demonstrates the superiority of liquid metal printing in the fabrication of two-dimensional materials and optoelectronic devices.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"14 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677383","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 high-performance dual-channel-layered InAlZnO thin-film transistors for low power and transparent electronics 用于低功耗和透明电子器件的高性能双通道分层InAlZnO薄膜晶体管的合理设计

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-07-21 DOI: 10.1016/j.apsusc.2025.164113

Genglong Zhao , Ablat Abliz

{"title":"Rational design of high-performance dual-channel-layered InAlZnO thin-film transistors for low power and transparent electronics","authors":"Genglong Zhao , Ablat Abliz","doi":"10.1016/j.apsusc.2025.164113","DOIUrl":"10.1016/j.apsusc.2025.164113","url":null,"abstract":"<div><div>In this study, InAlZnO (IAZO) based oxide films and related thin-film transistors (TFTs) were prepared using RF magnetron sputtering. The effects of different Al contents on the oxygen vacancy defects, optical properties, and performance of single- and dual-channel-layered IAZO TFTs were investigated. The experimental results showed that optimized dual-channel-layered IAZO(1:0.1:1)/ IAZO(1:0.3:1) TFTs obtained a high carrier field-effect mobility (μFE) of 42.3 cm2/Vs, a subthreshold swing (SS) of 131 mV dec-1 and an Ion/Ioff of 1.6 × 107. Meanwhile, the light illumination stress stability of the dual-channel-layered IAZO TFTs was significantly enhanced. This was because the 0.1 % Al content IAZO film was utilized as the front layer of the TFT to provide high carrier concentration (Ne) and increase mobility, whereas the 0.3 % Al content IAZO film was used as the back layer of the TFT to control the channel conductance and trap density. X-ray photoelectron spectroscopy and electron paramagnetic resonance analysis revealed that the number of oxygen vacancies decreased with increasing Al content. Finally, a fully transparent dual-channel layered IAZO TFT was prepared with an ITO-glass substrate, and a high optical transparency of 90 %, small VTH of 0.04 V, and high μFE of 39.7 cm2/Vs were achieved for applications in the field of transparent displays.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"711 ","pages":"Article 164113"},"PeriodicalIF":6.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677300","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 surficial in situ growth strategy to fabricate monolithic catalysts of mesoporous Co-Cu bimetallic oxides supported on Ni foam for ethyl acetate efficiently oxidation 泡沫镍负载介孔Co-Cu双金属氧化物整体式高效氧化乙酸乙酯催化剂的表面原位生长策略

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-21 DOI: 10.1016/j.apsusc.2025.164123

Yanfei Jian, Xinyu Wang, Mudi Ma, Rui Yang, Qiyuan Liu, Lianghui Xia, Lu Li, Chi He

{"title":"A surficial in situ growth strategy to fabricate monolithic catalysts of mesoporous Co-Cu bimetallic oxides supported on Ni foam for ethyl acetate efficiently oxidation","authors":"Yanfei Jian, Xinyu Wang, Mudi Ma, Rui Yang, Qiyuan Liu, Lianghui Xia, Lu Li, Chi He","doi":"10.1016/j.apsusc.2025.164123","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164123","url":null,"abstract":"A series of monolithic Cu-doped Co3O4 supported on Ni foam (NF) catalysts with mesoporous structure were successfully prepared by in situ hydrothermal synthesis, where the oxygen species and textural properties were regulated by varying the Cu/Co ratio of bimetallic mixed oxides supported on Ni foam. The role of oxygen species in catalytic oxidation of ethyl acetate (EA) was also elucidated. As a result, the monolithic catalyst with Co/Cu molar ratio of 1/2, labeled as CoCu2Ox-NF, exhibited the highest conversion rate for EA oxidation (T99 = 230 °C, GHSV = 3000 h−1). The results of characterization show that its robust catalytic performance could be attributed to superior reducibility, sufficient Co3+ species and high mobility of active oxygen. In addition, the larger surface area and pore volume were also beneficial to catalytic performance due to increased gas diffusion. The characterization results of fresh and used catalysts and the study of reaction mechanism showed that lattice oxygen species played an important role in EA oxidation process which accelerated the EA activation and deep oxidation of carboxylate species over CoCu2Ox-NF. As expected, the CoCu2Ox-NF catalyst also presented good stability over EA oxidation in the presence of toluene as well as o-xylene. Hence, CoCu2Ox-NF possessed satisfactory universality and long-term durability, which is a promising catalyst for industrial application.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"165 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677290","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

Effective electromagnetic wave absorber of BN nanoribbons bonded with rGO by confined strategy 约束策略键合氮化硼纳米带的有效电磁波吸收剂

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-21 DOI: 10.1016/j.apsusc.2025.164112

Yangle Dong, Xiaoyan Yuan, Yulei Wang, Yansong Jiang, Lifeng Zhang

{"title":"Effective electromagnetic wave absorber of BN nanoribbons bonded with rGO by confined strategy","authors":"Yangle Dong, Xiaoyan Yuan, Yulei Wang, Yansong Jiang, Lifeng Zhang","doi":"10.1016/j.apsusc.2025.164112","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164112","url":null,"abstract":"Reasonable component and structure design for absorbers are of great significance for improving their electromagnetic (EM) absorbing performance. Aiming at the high-efficiency and light-weight EM wave absorbing materials, boron nitride nanoribbons covalent bonding with reduced graphene oxide (BN/rGO) with a unique stem-leaf structure were prepared by confined strategy of freeze-casting and heat treatment. The BN nanoribbons directly adjusted the dielectric constant of rGO, as well as avoided the stacking and agglomeration of rGO sheets, which was beneficial to improve the impedance matching and enhance the polarization loss. The BN/rGO exhibited outstanding EM wave absorbing properties. When the filling ratio was 5 wt%, the reflection loss (RL) of BN/rGO/paraffin was −44.7 dB located at 3.0 GHz, and the effective absorption bandwidth (EAB) was 5.52 GHz (92 % of the Ku-band) at 2.00 mm. Meanwhile, the EAB was 2.48 GHz at 4.00 mm in C-band (4–8 GHz), which had surpassed most of the reported nonmagnetic materials. This work provided an effected strategy for the martial with light weight and broadband EM wave absorbing performance.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"77 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677288","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

Antibacterial crystalline bilayers constructed on dentin substrates via laser-assisted mineralization: characterization and functional implications 通过激光辅助矿化在牙本质基质上构建抗菌晶体双层：表征和功能意义

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-21 DOI: 10.1016/j.apsusc.2025.164117

Kazuo Onuma, Miyabi Makino, Maki Nakamura, Erika Nishida, Kanako Shitomi, Saori Tanaka, Hirofumi Miyaji, Ayako Oyane

{"title":"Antibacterial crystalline bilayers constructed on dentin substrates via laser-assisted mineralization: characterization and functional implications","authors":"Kazuo Onuma, Miyabi Makino, Maki Nakamura, Erika Nishida, Kanako Shitomi, Saori Tanaka, Hirofumi Miyaji, Ayako Oyane","doi":"10.1016/j.apsusc.2025.164117","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164117","url":null,"abstract":"The formation of hydroxyapatite (Ca10(PO4)6(OH)2; HAP)-based multilayers containing antibacterial agents at different concentrations on teeth can help control infections against various bacteria in periodontal tissue. However, from a clinical perspective, rapid (within minutes) and simple construction of such multilayers on teeth has not yet been achieved. If realized, such a technique could contribute to oral health by promoting infection control. In this study, crystalline bilayers containing antibacterial agents (Ag and F) at different concentrations were rapidly constructed on dentin. This was achieved by subjecting the dentin substrates precoated with Ag(NH3)2F-containing light-absorbing paste to 30-s laser irradiation in a pseudo-physiological calcium phosphate solution. Transmission electron microscopy and energy-dispersive X-ray spectroscopy analyses revealed that the upper layer on the irradiated substrate was composed of F-substituted HAP (F-HAP) rods elongated to the c-axis. The content of Ag (<50 nm in size) in the rods layer was 0.14 ± 0.03 at.%. The lower layer was composed of particulate F-HAP and CaF2, with the Ag (<50 nm) content of 0.49 ± 0.17 at.%. X-ray photoelectron spectroscopy measurements indicated two chemical states of Ag on the irradiated substrate surface: Ag0, corresponding to Ag particles, and Agδ+, which substituted Ca2+ ions in the F-HAP crystals. The bilayers exhibited antibacterial activity against Streptococcus mutans, highlighting their potential for application in antibacterial dental treatment.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"108 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677382","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 adsorption and detection of luteolin based on Fe/Zn bimetallic ZIF-derived Fe-Fe3O4 nitrogen-doped mesoporous carbon in-situ grown on carbon nanofibers 纳米碳纤维上Fe/Zn双金属zif衍生Fe- fe3o4氮掺杂介孔碳对木犀草素的吸附和检测

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-07-21 DOI: 10.1016/j.apsusc.2025.164122

Caiyu Ge , Yuefan Wang , Yilin Wang , Zhifang Liu , Chao Chen , Yixi Xie , Pengcheng Zhao , Junjie Fei

{"title":"Enhanced adsorption and detection of luteolin based on Fe/Zn bimetallic ZIF-derived Fe-Fe3O4 nitrogen-doped mesoporous carbon in-situ grown on carbon nanofibers","authors":"Caiyu Ge , Yuefan Wang , Yilin Wang , Zhifang Liu , Chao Chen , Yixi Xie , Pengcheng Zhao , Junjie Fei","doi":"10.1016/j.apsusc.2025.164122","DOIUrl":"10.1016/j.apsusc.2025.164122","url":null,"abstract":"<div><div>As a natural flavonoid compound found in fruits, vegetables and herbs, luteolin (LU) has potent pharmacological activities and beneficial biological properties. Here, a Fe/Zn bimetallic ZIF pyrolysis-derived Fe-Fe3O4 N-doped mesoporous carbon was in-situ grown on carbon nanofibers (Fe-Fe3O4-NPC@CNFs), and it was used as an ultrasensitive electrochemical sensing platform for the efficient detection of LU in natural samples. Multiple characterization results show that Fe-Fe3O4-NPC@CNFs is a dodecahedral particle uniformly grown on CNFs with good crystal structure and uniform elemental distribution. Its rough surface with good mesoporous structure and high specific surface area of 823.19 m2/g is beneficial for LU adsorption. The density of states (DOS) and adsorption energies of NPC and Fe-Fe3O4-NPC further demonstrate that Fe-Fe3O4-NPC has better electrochemical performance and adsorption effect on LU. Under optimized conditions (carbonization: 800℃, pH: 5.0, enrichment: −0.2 V for 400 s), the Fe-Fe3O4-NPC@CNFs/GCE sensor showed satisfactory detection performance for LU in the range of 0.001–1.5 μM with the limit of detection (LOD) of 0.47 nM. Furthermore, this sensor exhibits excellent anti-interference capability, reproducibility, and stability, and it was also possible to effectively detect LU in food samples. This work provides a new strategy for the quantitative analysis of LU in food.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"711 ","pages":"Article 164122"},"PeriodicalIF":6.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677297","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

Development of SnO2@C nanocomposites derived from cassava residues as a green anode for advanced lithium-ion batteries 木薯渣SnO2@C纳米复合材料作为先进锂离子电池绿色阳极的开发

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-07-21 DOI: 10.1016/j.apsusc.2025.164118

Bui Thi Thao Nguyen , To Giang Tran , Phan Vien Nguyen , Nguyen Huu Huy Phuc , Pham Trung Kien , Nhi Tru Nguyen , Liem Thanh Pham , Man Van Tran , Tuan Loi Nguyen

{"title":"Development of SnO2@C nanocomposites derived from cassava residues as a green anode for advanced lithium-ion batteries","authors":"Bui Thi Thao Nguyen , To Giang Tran , Phan Vien Nguyen , Nguyen Huu Huy Phuc , Pham Trung Kien , Nhi Tru Nguyen , Liem Thanh Pham , Man Van Tran , Tuan Loi Nguyen","doi":"10.1016/j.apsusc.2025.164118","DOIUrl":"10.1016/j.apsusc.2025.164118","url":null,"abstract":"<div><div>In this report, nanocomposites of SnO2 and carbon (SnO2@C nanocomposites) were synthesized by a solution-based method combined with calcination at 500 °C in Ar for 1 or 2 h, utilizing SnCl4·5H2O and cassava residues as the Sn and C precursors, respectively. Due to this unique structure, high first-cycle charge capacities of 716.6 and 837.2 mAh g−1 at 0.2 A g−1 were achieved for SnO2@C electrodes calcined for 1 h and 2 h, namely SnO2@C_1H and SnO2@C_2H, respectively. Furthermore, the SnO2@C_1H electrode maintained a capacity of 777.7 mAh g−1 after 200 cycles, with the coulombic efficiency approaching 100 % after the initial cycle. The rate capacity test also demonstrated that the high current density charging capability of the SnO2@C electrodes was superior, showing capacities of 738.1 mAh g−1 for SnO2@C_1H and 631.2 mAh g−1 for SnO2@C_2H at 5 A g−1. Last but not least, the pseudo behavior was also confirmed to be consistently higher at all scan rates, elucidating the fast-charging capability of the SnO2@C electrodes. With the improved performance, the SnO2@C_1H nanocomposite has demonstrated excellent electrochemical ability and is suitable for anode material of advanced lithium-ion batteries.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"711 ","pages":"Article 164118"},"PeriodicalIF":6.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677295","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

Encapsulation of ZIF-8 within a triazine ion polymer using edge 2-methylimidazole directing effect for enhancing CO2 fixation into cyclic carbonates via synergistic catalysis 利用2-甲基咪唑的定向效应将ZIF-8包封在三嗪离子聚合物中，通过协同催化增强CO2对环碳酸盐的固定

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-07-20 DOI: 10.1016/j.apsusc.2025.164110

Zhengli Huang , Yulu Qu , Lan Luo , Chuanliang Yang , Fei Liu , Tianxiang Zhao

{"title":"Encapsulation of ZIF-8 within a triazine ion polymer using edge 2-methylimidazole directing effect for enhancing CO2 fixation into cyclic carbonates via synergistic catalysis","authors":"Zhengli Huang , Yulu Qu , Lan Luo , Chuanliang Yang , Fei Liu , Tianxiang Zhao","doi":"10.1016/j.apsusc.2025.164110","DOIUrl":"10.1016/j.apsusc.2025.164110","url":null,"abstract":"<div><div>Core-shell hybrid materials have attracted attention for CO2 capture and conversion because they overcome limitations such as low activity and poor stability of a single component. However, their synthesis is challenging because of complex conditions and required chemical structure customization between core–shell components. In this study, a series of core–shell structured metal–organic frameworks hybrid catalysts ZIF-8@IPs-x (x = 1, 2, 3, and 4) were synthesized by encapsulating ZIF-8 within a triazine ionomer polymer. Unlike previous methods that required specific functionalized directing groups (e.g., <img>H2, <img>OH, or <img>CHO) to form the core–shell structure, this approach utilized the incomplete coordination of 2-methylimidazole in ZIF-8 as a guiding agent, promoting the outer edge growth of the ionomer shell and achieving uniform encapsulation of ZIF-8. Significantly, the synergistic catalytic effects between the ZIF-8 core and the ionomer shell of the hybrid catalyst enabled efficient conversion of CO2 into various cyclic carbonates within 3 h, without the need for solvents or co-catalysts. Furthermore, this core–shell structured catalyst exhibited facile recovery and maintains its catalytic activity over five consecutive cycles.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"711 ","pages":"Article 164110"},"PeriodicalIF":6.3,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664377","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

Probing the interfacial chemistry in polycrystalline h-BN/Pt(1 1 1) surfaces through molecular adsorption 通过分子吸附探测多晶h-BN/Pt（1 1 1）表面的界面化学

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-20 DOI: 10.1016/j.apsusc.2025.164093

Rocío Molina-Motos , Antonio J. Martínez-Galera

{"title":"Probing the interfacial chemistry in polycrystalline h-BN/Pt(1 1 1) surfaces through molecular adsorption","authors":"Rocío Molina-Motos , Antonio J. Martínez-Galera","doi":"10.1016/j.apsusc.2025.164093","DOIUrl":"10.1016/j.apsusc.2025.164093","url":null,"abstract":"<div><div>One-atom-thick layers of polycrystalline h-BN comprising nanosized domains, associated to different rotational variants, have been grown under ultrahigh vacuum conditions on Pt(111) supports, and employed as substrates for molecular adsorption studies. The lowest growth temperature limit to obtain the highest rotational variety, without compromising the structural quality, is determined by low energy electron diffraction (LEED) and scanning tunneling microscopy (STM). The nanodomains exhibit different moiré patterns with distinct periodicities and corrugations, suggesting significant dissimilarities in their interfacial chemistries. Consequently, the junctions of these domains give rise to a rich variety of boundaries. Therefore, these h-BN/Pt(111) surfaces offer a wide spectrum of possibilities for molecular adsorption studies. As a probe molecule, the prototypical adsorbate perylene-3,4,9,10-tetracarboxylic-dianhydride (PTCDA) has been employed. By a Fourier Transform analysis of STM images it is possible to unveil the moiré pattern periodicity of a nanodomain under the PTCDA adlayer, and it is concluded that often the molecular assembly and its orientation do not differ in neighbour nanodomains, although the h-BN lattice underneath is rotated differently. This is consistent with a weak physisorption of PTCDA on h-BN/Pt(111). Additionally, the effect of the atomic steps of the underlying Pt(111) support on the molecular assembly has been analysed by STM measurements, having demonstrated a carpet-like growth of the PTCDA adlayer.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164093"},"PeriodicalIF":6.9,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665101","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

Atomically dispersed Co–N5 sites in graphene nanofoams for piezocatalytic N2 fixation driven by mild hydromechanical energy 微流体机械能驱动下石墨烯纳米泡沫中原子分散的Co-N5位点的压催化固氮

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-07-20 DOI: 10.1016/j.apsusc.2025.164111

Wenhui Feng , Yan Xu , Jie Yuan , Ke Wang , Chuyun Huang , Huaibao Qiu , Difa Xu , Xiaoqing Qiu

{"title":"Atomically dispersed Co–N5 sites in graphene nanofoams for piezocatalytic N2 fixation driven by mild hydromechanical energy","authors":"Wenhui Feng , Yan Xu , Jie Yuan , Ke Wang , Chuyun Huang , Huaibao Qiu , Difa Xu , Xiaoqing Qiu","doi":"10.1016/j.apsusc.2025.164111","DOIUrl":"10.1016/j.apsusc.2025.164111","url":null,"abstract":"<div><div>Novel Cobalt/Nitrogen co-doped graphene piezoelectric nanofoams (CoNG), featuring a confined Co-N5 configuration with four coordinating N atoms being from the same NG layer and an additional coordinating N atom coming from an adjacent nitrogen doped graphene (NG) layer, have been synthesized for nitrogen fixation under low-frequency hydromechanical energy. The Co–N5 configuration could increase local dipole moments in the a, b and c directions, thereby significantly improving the piezoelectric properties. On the other hand, the Co–N bonds bridging between neighboring NG layers effectively serve as interlayer electronic transport channels, enhancing carrier spatial separation in CoNG. It is due to the introduction of the versatile Co–N5 conformation that CoNG is indeed capable of piezocatalytic nitrogen fixation under low-frequency stirring force, yielding NH4+ and H2 at rates of 0.64 and 14.10 µmol·g−1·h−1, respectively. Which are markedly higher than those achieved with NG (0.32 μmol·g−1·h−1 and 9.51 μmol·g−1·h−1). Isotopic 15N2 labeling confirms the nitrogen source of ammonia. Furthermore, DFT calculations reveal that nitrogen molecules adsorb predominantly in an end-on manner at the Co sites and form NH3 in a distal hydrogenation pathway. Moreover, CoNG demonstrates 16.5-fold and 3.4-fold enhancements in water splitting and rhodamine B degradation efficiency, respectively, in comparison with NG. This work establishes a sustainable pathway for ambient-condition ammonia synthesis and expands the application scope of piezocatalysis in green chemistry.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"711 ","pages":"Article 164111"},"PeriodicalIF":6.3,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665103","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