Applied Surface Science最新文献_第8页

Wettability characteristics of lunar soil particles from the Chang’E-5 mission: A single-particle surface analysis 嫦娥五号月球土壤颗粒润湿性特征：单颗粒表面分析

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-22 DOI: 10.1016/j.apsusc.2025.163331

Haotian Zhang , Jun Liu , Zhiping Yuan , Zhenxing Li , Xiaoyu Yao , Qianghui Xu , Tongcai Wang , Yanjie Zheng , Gong Wang , Hu Zhang , Jun Shen

{"title":"Wettability characteristics of lunar soil particles from the Chang’E-5 mission: A single-particle surface analysis","authors":"Haotian Zhang , Jun Liu , Zhiping Yuan , Zhenxing Li , Xiaoyu Yao , Qianghui Xu , Tongcai Wang , Yanjie Zheng , Gong Wang , Hu Zhang , Jun Shen","doi":"10.1016/j.apsusc.2025.163331","DOIUrl":"10.1016/j.apsusc.2025.163331","url":null,"abstract":"<div><div>Lunar base construction has emerged as a strategic focus for global space agencies, with extrusion-based in situ resource utilization technologies recognized as a promising approach for utilizing lunar soil. However, a critical aspect of this technology lies in understanding the wettability characteristics between lunar soil and binding agents, such as water or resin. Here, the wetting dynamics were quantitatively analyzed through a custom-developed experimental apparatus combining ultra-deep field microscopy with a precision liquid evaporator. Our results demonstrate that the contact angle between a particle and water averages 108.73° with a standard deviation of 3.60°, thus indicating hydrophobicity. This phenomenon is primarily attributed to the distinctive surface morphology of the particle, characterized by adherent structures, porous architecture, and heterogeneous mineral fragments. Numerical simulations of droplet wetting behavior confirm that the Cassie-Baxter model accurately describes the observed phenomena. Through integrated experimental and computational analysis, we determined a surface tension of 8.46 mN/m between particles and water. For resin-particle interactions, the calculated Young contact angle of 96.18° exceeds the directly computed 91.90° from Young equation. This study establishes a novel framework for characterizing contact angles on micron-scale rough particles and provides crucial empirical support for extrusion-based extraterrestrial construction.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163331"},"PeriodicalIF":6.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862787","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

Antiviral activity of peptide and peptide mimic coated surfaces 多肽和多肽模拟物涂层表面的抗病毒活性

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-22 DOI: 10.1016/j.apsusc.2025.163242

Umme Laila Urmi , Mark D.P. Willcox , Rajesh Kuppusamy , Samuel Attard , Naresh Kumar , Salequl Islam , Hongzhe Chen , Xiaojun Ren , Ajay Kumar Vijay

{"title":"Antiviral activity of peptide and peptide mimic coated surfaces","authors":"Umme Laila Urmi , Mark D.P. Willcox , Rajesh Kuppusamy , Samuel Attard , Naresh Kumar , Salequl Islam , Hongzhe Chen , Xiaojun Ren , Ajay Kumar Vijay","doi":"10.1016/j.apsusc.2025.163242","DOIUrl":"10.1016/j.apsusc.2025.163242","url":null,"abstract":"<div><div>The persistence of viruses on surfaces and their role in indirect transmission pose significant public health risks, emphasizing the need for antiviral coatings. This study evaluated the antiviral efficacy of cationic peptide Mel4 and anthranilamide peptidomimetic 758, immobilized on glass coverslips using polydopamine (PDA) coatings. Surface analyses by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (TOF-SIMS) confirmed peptide and mimic attachment, with characteristic increases in atomic concentrations of C, N, and Br (specific to 758). Tryptophan and arginine fragments were predominant on 758 and Mel4 coatings, respectively. Wettability studies revealed hydrophilic properties for Mel4 and hydrophobic characteristics for 758 coatings. Antiviral assays demonstrated selective efficacy: 758 reduced the infectivity of enveloped viruses, MHV-1 and H1N1, by 68 % and 89 %, respectively, while Mel4 achieved reductions of 85 % and 90 % against non-enveloped viruses HAdV-5 and MNV-1. Durability tests over 74 h showed ∼ 50 % retained efficacy for 758 and > 80 % for Mel4. Minor XPS shifts suggested gradual compound loss or viral residue overlay. Cytotoxicity assays confirmed biocompatibility, with > 90 % host cell viability. These findings highlight the potential of Mel4 and 758 coatings as durable and selective antiviral treatments to mitigate viral transmission on high-contact surfaces.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163242"},"PeriodicalIF":6.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862723","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

Molecular machine-inspired design of axial and bivalent dual-atom catalysts for enhanced oxygen evolution/reduction reactions within van der Waals gap 范德华间隙内增强氧析出/还原反应的轴向和二价双原子催化剂的分子机器启发设计

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-22 DOI: 10.1016/j.apsusc.2025.163327

Mohsen Tamtaji , Mohammad Kazemeini , Jafar Abdi

{"title":"Molecular machine-inspired design of axial and bivalent dual-atom catalysts for enhanced oxygen evolution/reduction reactions within van der Waals gap","authors":"Mohsen Tamtaji , Mohammad Kazemeini , Jafar Abdi","doi":"10.1016/j.apsusc.2025.163327","DOIUrl":"10.1016/j.apsusc.2025.163327","url":null,"abstract":"<div><div>Dual-atom catalysts (DACs) upon porphyrins (Por) and phthalocyanines (Pht) have been widely used for oxygen evolution and/or reduction reactions (OER and/or ORR). However, the van der Waals (vdW) interactions’ effect on their performances has not been systematically explored. In this study, the vdW interactions in double-layers of X-Co(III)PorCo(II)Pht-DACs were leveraged to enhance ORR and OER performances. Thus, these authors have used dispersion corrected density functional theory (DFT) with Becke-Johnson damping function (D3) to investigate double-layers of X-Co(III)PorCo(II)Pht-DACs, through which X represented F, Cl, Br, I, or OH, in order to discover DACs with low ORR and OER overpotentials. Current findings revealed that, the ORR and OER may happen inside the vdW gap of Br-Co(III)PorCo(II)Pht-DAC, leading to 0.16 and 0.17 V overpotentials, respectively. The enhanced ORR and OER activities were rationalized to be due to the charge distribution associated with the tuned vdW interactions. Moreover, Density of States (DOS) analysis indicated the hybridization of the d orbitals of Co atoms with the p orbitals of the *OH and/or *O intermediates during the ORR and OER. This study provided crucial insights into the development of next-generation catalysts, showcasing the effectiveness of vdW interactions in electrocatalysis at room temperature.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163327"},"PeriodicalIF":6.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862788","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 photocatalytic activity of TiO2/Au/TiO2/Au stacked nanostructures synthesized via sputtering and subsequent annealing 溅射和退火法制备的TiO2/Au/TiO2/Au堆叠纳米结构增强了光催化活性

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-22 DOI: 10.1016/j.apsusc.2025.163328

Retsuo Kawakami , Yuki Miyaji , Shin-ichiro Yanagiya , Akihiro Shirai , Pankaj Koinkar , Akihiro Furube , Yoshitaka Nakano , Masahito Niibe

{"title":"Enhanced photocatalytic activity of TiO2/Au/TiO2/Au stacked nanostructures synthesized via sputtering and subsequent annealing","authors":"Retsuo Kawakami , Yuki Miyaji , Shin-ichiro Yanagiya , Akihiro Shirai , Pankaj Koinkar , Akihiro Furube , Yoshitaka Nakano , Masahito Niibe","doi":"10.1016/j.apsusc.2025.163328","DOIUrl":"10.1016/j.apsusc.2025.163328","url":null,"abstract":"<div><div>We synthesized TiO<sub>2</sub>/Au/TiO<sub>2</sub>/Au (IMIM) stacked nanostructure composed of TiO<sub>2</sub> thin films (TFs) and Au nanoparticles (NPs). The TFs of TiO<sub>2</sub> were deposited by sputtering Ti targets in Ar/O<sub>2</sub> gas, followed by annealing to induce the anatase phase. The Au NPs were deposited by sputtering an Au target in Ar gas and then annealed to form the NPs. The nanostructures made of TiO<sub>2</sub>/Au/TiO<sub>2</sub> (MIM) and TiO<sub>2</sub>/Au (IM) were synthesized for the purpose of comparison. The photocatalytic activity was evaluated by measuring organic decomposition and bacterial inactivation under ultraviolet and visible light irradiation, with the visible light wavelength matching the localized surface plasmon resonance (LSPR) of Au NPs. The photocatalytic performance of IMIM was more enhanced than TiO<sub>2</sub> TF as the visible light intensity increased. The IMIM also outperformed the MIM and IM nanostructures. The improved photocatalytic activity would be attributed to the hot electron transfer from Au NPs to TiO<sub>2</sub>, originating from the visible-light-driven LSPR at the TiO<sub>2</sub>/Au interface at the top of IMIM. Additionally, the increased visible light absorption attributed to more oxygen vacancies in the top TiO<sub>2</sub> layer due to Au NPs and a rougher surface due to the top TiO<sub>2</sub> layer would enhance the photocatalytic activity.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163328"},"PeriodicalIF":6.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862790","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

Molecular assembly synthesis of microporous FeN4-doped carbon plates implanted with Fe3C-doped graphitized carbon nanobelts for efficient oxygen reduction 分子组装合成植入掺杂 Fe3C 的石墨化碳纳米颗粒的掺杂 FeN4 的微孔碳板，用于高效氧气还原

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-22 DOI: 10.1016/j.apsusc.2025.163332

Feiyan Feng, Zeyu Hu, Jiani Gu, Zhangxiong Wu

{"title":"Molecular assembly synthesis of microporous FeN4-doped carbon plates implanted with Fe3C-doped graphitized carbon nanobelts for efficient oxygen reduction","authors":"Feiyan Feng, Zeyu Hu, Jiani Gu, Zhangxiong Wu","doi":"10.1016/j.apsusc.2025.163332","DOIUrl":"10.1016/j.apsusc.2025.163332","url":null,"abstract":"<div><div>Transition metal/nitrogen-doped carbon materials combining the merits of high surface, high graphitization, 2D morphology and rich active sites are appealing for electrocatalytic oxygen reduction reaction (ORR). This work proposes a molecular assembly strategy to synthesize novel Fe/N-doped carbon materials with these properties acquired simultaneously. Histidine (His), potassium bicarbonate (PBC) and ferrous bisglycinate (Fe(Gly)<sub>2</sub>) are assembled into a uniformly mixed aggregate. Pyrolysis of the aggregate converts the His component to 2D highly microporous carbon plates carrying atomic FeN<sub>4</sub> sites via foaming, carbonization and in-situ activation and drives the Fe(Gly)<sub>2</sub> component to form highly graphitized carbon nanobelts encapsulating Fe<sub>3</sub>C nanoparticles via carbonization and local catalytic graphitization. The typical material possesses a high surface area of 1728 m<sup>2</sup> g<sup>−1</sup>, uniform micropores of 0.6 and 1.8 nm and rich FeN<sub>4</sub> sites and Fe<sub>3</sub>C nanoparticles. It shows high ORR performance with a half-wave potential of 0.90 V, fast kinetics, low H<sub>2</sub>O<sub>2</sub> yields, high stability and superior methanol tolerance. The influences of the Fe(Gly)<sub>2</sub> dosage and pyrolysis temperature and the roles of Fe(Gly)<sub>2</sub> and PBC are discussed. The high ORR performance of the typical material originates from the active FeN<sub>4</sub> and Fe<sub>3</sub>C sites and the high porosity and graphitization for facile mass and electron transfer.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163332"},"PeriodicalIF":6.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862753","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 charge carrier density and spatial decoupling effectiveness of NiS-Zn3In2S6/Bi2S3 for boosting photocatalytic acceptorlessdehydrogenation of amines 提高NiS-Zn3In2S6/Bi2S3的载流子密度和空间解耦效率，促进胺的光催化无受体脱氢

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-21 DOI: 10.1016/j.apsusc.2025.163325

Yuanqiao Wei , Ruifang Zhang , Wei Gao , Ningzhao Shang , Xiang Cheng , Yongjun Gao , Xin Zhou , Chun Wang , Shutao Gao

{"title":"Enhancing charge carrier density and spatial decoupling effectiveness of NiS-Zn3In2S6/Bi2S3 for boosting photocatalytic acceptorlessdehydrogenation of amines","authors":"Yuanqiao Wei , Ruifang Zhang , Wei Gao , Ningzhao Shang , Xiang Cheng , Yongjun Gao , Xin Zhou , Chun Wang , Shutao Gao","doi":"10.1016/j.apsusc.2025.163325","DOIUrl":"10.1016/j.apsusc.2025.163325","url":null,"abstract":"<div><div>Photocatalytic Acceptorless Dehydrogenation (PAD) of amines to hydrogen (H<sub>2</sub>) and imines is a promising approach to produce clean energy and high-value added chemicals. However, the poor charge carrier separation performance of photocatalyst and uncontrolled side reaction, including the imines hydrogenated and C<img>C coupling, significantly hindered its development. Herein, we developed a heterojunction photocatalyst NiS-Zn<sub>3</sub>In<sub>2</sub>S<sub>6</sub>/Bi<sub>2</sub>S<sub>3</sub> (Ni-ZIS/Bi) for boosting the PAD reaction of benzylamine. Due to the enhanced density and spatial decoupling effectiveness of photogenerated charge carriers, Ni<sub>0.5%</sub>-ZIS/Bi<sub>1.2%</sub> exhibits 12.4-fold and 5.9-fold increase in production rate of H<sub>2</sub> and N-benzylidenebenzylamine (NBBA), respectively, compared with Zn<sub>3</sub>In<sub>2</sub>S<sub>6</sub>. Notably, the selectivity of NBBA increased from 28.5 % of Zn<sub>3</sub>In<sub>2</sub>S<sub>6</sub> to 98 % of NiS<sub>0.5%</sub>-ZIS/Bi<sub>1.2%</sub>. This study offers novel insight into the cooperative coupling of H<sub>2</sub> production with organic transformation processes.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163325"},"PeriodicalIF":6.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857710","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

Impact of the temperature on laser ablation of residues from APPJ-etched N-BK7 optical glass 温度对激光烧蚀 APPJ 刻蚀 N-BK7 光学玻璃残留物的影响

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-21 DOI: 10.1016/j.apsusc.2025.163321

Robert Heinke , Martin Ehrhardt , Pierre Lorenz , Klaus Zimmer , Thomas Arnold

{"title":"Impact of the temperature on laser ablation of residues from APPJ-etched N-BK7 optical glass","authors":"Robert Heinke , Martin Ehrhardt , Pierre Lorenz , Klaus Zimmer , Thomas Arnold","doi":"10.1016/j.apsusc.2025.163321","DOIUrl":"10.1016/j.apsusc.2025.163321","url":null,"abstract":"<div><div>Atmospheric pressure plasma jet (APPJ) machining of optical materials, e.g. fused silica and silicon carbide is capable of generating free-form optical surfaces with excellent precision and low surface roughness. However, APPJ etching of the commonly used optical glass N-BK7®, which contains various metal oxides, with fluorine-containing gases results in the formation of surface residues consisting of metal fluorides. The accumulated residues form a layer on the glass substrate that deteriorates the etching process in terms of etching rate and surface roughness but can be ablated by pulsed laser irradiation. The aim of this study is to reduce the residual layer thickness required for its laser removal as a prerequisite to increased shape accuracy and reduced process-induced roughness.</div><div>N-BK7® samples were etched with APPJ while varying the surface temperature. Subsequently the APPJ-etched area was irradiated by excimer laser at different wavelengths (λ = 193; 248; 308 nm; t<sub>Pulse</sub> = 20 ns). The etched and laser-exposed sample surfaces were thereafter analyzed by WLI and SEM.</div><div>It can be shown that residual layers resulting from etching at different temperatures can be removed at wavelengths of 193 nm and 248 nm. The thinnest layer for complete removal demonstrated is 95 nm at a wavelength of 193 nm. The minimum layer thicknesses for λ = 248 nm are in the range of 190–320 nm. At a wavelength of 308 nm, neither removal of the residual layer nor damage to the glass could be detected for the selected fluence range.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163321"},"PeriodicalIF":6.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857713","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

The selective flotation separation of galena from sphalerite with 5-heptyl-1,3,4-thiadiazole-2-thione: Emphasizing on adsorption mechanism 5-庚基-1,3,4-噻二唑-2-硫酮选择性浮选分离方铅矿和闪锌矿：重点研究吸附机理

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-21 DOI: 10.1016/j.apsusc.2025.163204

Mahmoud Mohamed Mohamed Ahmed , Zhiyong Zhang , Manman Liu , Guangsheng Zeng , Guangyi Liu

{"title":"The selective flotation separation of galena from sphalerite with 5-heptyl-1,3,4-thiadiazole-2-thione: Emphasizing on adsorption mechanism","authors":"Mahmoud Mohamed Mohamed Ahmed , Zhiyong Zhang , Manman Liu , Guangsheng Zeng , Guangyi Liu","doi":"10.1016/j.apsusc.2025.163204","DOIUrl":"10.1016/j.apsusc.2025.163204","url":null,"abstract":"<div><div>In order to improve the flotation process, chemical engineering plays a significant role, particularly in the development of novel collectors. This paper utilized the novel collector 5-heptyl-1,3,4-thiadiazole-2-thione (HPSDT) to separate galena from sphalerite. The micro flotation demonstrated that HPSDT exhibited an excellent selectivity towards galena, and achieved the efficient flotation separation of galena from its mixture with sphalerite at pH 10. And HPSDT exhibited the greater hydrophobization to galena than sphalerite under pH 4–12. Overall, with lifting temperature, the contact angle of galena and sphalerite decreased, so did their flotation recovery. In situ AFM analyses indicated that HPSDT self-assembled on the galena surface to form aggregates, while no any aggregation was observed on the sphalerite surface. UV spectra reconfirmed the selective adsorption of HPSDT on galena rather than sphalerite. The adsorption of HPSDT on to galena was in good agreement with the pseudo-second-order model and Langmuir isotherm, which was a spontaneous exothermic chemisorption process. FTIR and XPS analyses indicated that the HPSDT-Pb complexes were formed on galena surface through the interaction of surface Pb atoms with the N and S atoms of HPSDT, which oriented HPSDT’s heptyl group outward to adhere bubbles, and then to be hydrophobized and floated out.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163204"},"PeriodicalIF":6.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143853157","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

One-Step phosphorus doping integrated vacancy engineering for efficient carbon dioxide electrochemical reduction 一步磷掺杂集成空位工程高效二氧化碳电化学还原

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-21 DOI: 10.1016/j.apsusc.2025.163324

Yi Li , Xiuyue Liu , Ye Sun , Miao Yu

{"title":"One-Step phosphorus doping integrated vacancy engineering for efficient carbon dioxide electrochemical reduction","authors":"Yi Li , Xiuyue Liu , Ye Sun , Miao Yu","doi":"10.1016/j.apsusc.2025.163324","DOIUrl":"10.1016/j.apsusc.2025.163324","url":null,"abstract":"<div><div>Vacancy engineering of electrocatalysts is recognized as an effective approach to improve CO<sub>2</sub> activation. Element doping, which enhances the electrical conductivity of electrocatalysts, can elevate the current density in the CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR). Herein, we present a facile strategy to integrate elemental doping and vacancy engineering in one step. We select tin disulfide (SnS<sub>2</sub>) nanosheets as the parent electrocatalyst and phosphorus (P) as the doping element. Substituting the lower-valence S<sup>2−</sup> with the higher-valence P<sup>3−</sup>, S vacancies are generated, leading to the formation of P-doped SnS<sub>2-x</sub>. The combination of P doping with S vacancies (PDSVs) induces significant charge redistribution and electron accumulation, leading to catalytically active sites that lower the activation barrier and accelerate reduction kinetics, outperforming SnS<sub>2-x</sub> with S vacancies alone. Moreover, PDSVs narrow the band gap and introduce a new band at the Fermi level, showing a carrier density 5.9 times that of SnS<sub>2</sub>. As a result, P-SnS<sub>2-x</sub> delivers a current density of −31.4 mA cm<sup>−2</sup> for HCOOH production at −1.2 V <em>vs.</em> the reversible hydrogen electrode. A Faraday efficiency >80 % for HCOOH is demonstrated over a large potential range. This work provides a one-step strategy for simultaneously achieving element doping and vacancy engineering in electrocatalysts.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"701 ","pages":"Article 163324"},"PeriodicalIF":6.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143853158","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

Engineered covalent triazine framework/graphitic carbon nitride heterojunction with synergistically enhanced photocatalytic activity 具有协同增强光催化活性的工程共价三嗪框架/石墨氮化碳异质结

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-04-21 DOI: 10.1016/j.apsusc.2025.163326

Hiba Elmansour, Donghui Wang, Shuanglong Li, Haiyang Zhang, Yihang Fu, Feng Chen

{"title":"Engineered covalent triazine framework/graphitic carbon nitride heterojunction with synergistically enhanced photocatalytic activity","authors":"Hiba Elmansour, Donghui Wang, Shuanglong Li, Haiyang Zhang, Yihang Fu, Feng Chen","doi":"10.1016/j.apsusc.2025.163326","DOIUrl":"10.1016/j.apsusc.2025.163326","url":null,"abstract":"<div><div>Metal-free heterostructure graphite carbon nitride (CN) with a covalent triazine framework (CTF) was synthesized by a heat-treatment process. characterized by XRD, TEM, and XPS, which revealed that CN exhibited excellent contact with the CTF, forming a CN/CTF heterostructure that significantly influenced the interface properties. The UV–vis DRS demonstrated enhanced absorption of visible light within the 450–700 nm rang, EIS revealed a significant decrease in interfacial charge transfer resistance, while the TPR results demonstrated the formation of a photo-induced <em>p</em>-<em>n</em> junction at the interface, facilitating efficient charge separation. photocatalytic experiments demonstrated that CN/CTF6 exhibited an ibuprofen photodegradation was 3.75 and 1.9 times higher than the activity of CN and CTF, respectively, under full spectrum and 4.8 and 8.4 times higher than that of CN and CTF, respectively, under visible-light. Furthermore, the CN/CTF3 exhibited HER rate of 10,756.46 μmol h<sup>−1</sup>, which is 4.4 and 64.5 times higher than that of CN and CTF, respectively, under full spectrum irradiation. In contrast, under visible light, CN and CTF achieved 9.2-fold and 8.7-fold over CN and CTF, respectively. This study presents a promising strategy for developing <em>g</em>-C<sub>3</sub>N<sub>4</sub>-based composites with significantly enhanced photocatalytic performances.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"702 ","pages":"Article 163326"},"PeriodicalIF":6.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857712","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