Applied Surface Science最新文献_第9页

Promotional effect of Fe on Rh-based catalyst for CO hydrogenation to ethanol over FeOx/Rh(111)

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162066

Hong Zhang, Huan Li, Jing Zhou, Mingshu Chen

{"title":"Promotional effect of Fe on Rh-based catalyst for CO hydrogenation to ethanol over FeOx/Rh(111)","authors":"Hong Zhang, Huan Li, Jing Zhou, Mingshu Chen","doi":"10.1016/j.apsusc.2024.162066","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162066","url":null,"abstract":"FeOx/Rh(111) model catalysts were prepared and used to investigate the promotional effects of Fe on Rh catalysts for CO hydrogenation. X-ray photoelectron spectroscopy (XPS), low energy ion scattering (LEIS), low energy electron diffraction (LEED), infrared reflection absorption spectrometer (IRAS) and Auger electron spectroscopy (AES) were used to characterize the model surfaces. The results show that in 1 × 10-7 Torr O2 at 1023 K, the iron oxide can grow on the Rh(111) surface up to 1 monolayer (ML) with a structure of non-stoichiometric FeO denoted as O-Fe-. It can be interchanged to an O-Fe-O- structure by oxidized in oxygen at various temperatures. The catalytic performance shows that the Fe additive significantly increases the formation rates of ethanol and ethylene, while suppresses the formation rate of methane. It reaches a maximum for ethanol at the FeOx coverage of 1ML, but continuously increases for ethylene up to 2 ML. XPS, LEIS and IRAS results reveal the formation of Fe-Rh alloy and iron carbides under CO hydrogenation reaction conditions. These combined results demonstrate that the Rh surface is highly active for methane formation, FeRh alloys promote ethanol formation, while iron carbides may be good for ethylene formation. The present model study allows to more directly evaluate the active sites without involving some effects from the oxide supports.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"21 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809426","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

Simple procedure to establish thickness and phase composition of plasma nitrided and post-oxidized steel surfaces using multiple angle GIXRD and RIR quantification

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162079

Ruth Hinrichs, Marcos Antonio Zen Vasconcellos, Livio Amaral, Leonardo Fonseca Oliveira, Alexandre da Silva Rocha

{"title":"Simple procedure to establish thickness and phase composition of plasma nitrided and post-oxidized steel surfaces using multiple angle GIXRD and RIR quantification","authors":"Ruth Hinrichs, Marcos Antonio Zen Vasconcellos, Livio Amaral, Leonardo Fonseca Oliveira, Alexandre da Silva Rocha","doi":"10.1016/j.apsusc.2024.162079","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162079","url":null,"abstract":"Multiple angle grazing incidence X-ray diffraction (GIXRD) was employed to determine depth distribution and thickness of different phases developed on steel, after plasma nitriding and post-oxidation, establishing a method that is fast, simple and widely applicable to characterize different types of polycrystalline coatings. Diffractograms were acquired with incidence angles between 0.25° to 10° and the phase weight fraction was calculated using the RIR method. The probed depth was determined using the weighted average of the X-ray mass absorption coefficients of the obtained phases. Utilizing peak appearance order, weight fraction, density, and probed depth, a structure of pure or mixed phases is discussed. Conversion electron Mössbauer spectroscopy, which probes to a similar deepness as 0.75° GIXRD, was used to corroborate the phase composition of this depth. Validation of thickness was achieved through SEM images acquired from micrometric trenches milled on the surface, using a focused ion beam. Coefficient of friction tests were conducted to investigate the correlations between coefficient of friction with phase composition, and durability with the thickness of the outer layer. The characterization procedure presents information on the concentration and depth where the phases are located, the coating thickness and roughness. The findings are supported by additional analytical techniques.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"11 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809429","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 and electrocatalytic properties of IrO2 nanoparticles via Cr and Co ion doping: Insights into surface oxygen defect structures

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162088

Hyeri Jeon, Dung Thanh Hoang, Gyuri Kim, In Young Kim, Hangil Lee, Seungwoo Hong

{"title":"Enhanced photocatalytic and electrocatalytic properties of IrO2 nanoparticles via Cr and Co ion doping: Insights into surface oxygen defect structures","authors":"Hyeri Jeon, Dung Thanh Hoang, Gyuri Kim, In Young Kim, Hangil Lee, Seungwoo Hong","doi":"10.1016/j.apsusc.2024.162088","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162088","url":null,"abstract":"The growing global energy demand underscores the urgent need for cost-effective visible light-activated photocatalysts capable of efficiently converting diverse molecules into energy-relevant compounds. In parallel, advancements in catalyst synthesis methodologies have intensified research efforts aimed at developing multifunctional catalysts that synergistically integrate photocatalytic and electrocatalytic functionalities. A prevailing strategy to enhance catalytic efficiency in nanoparticles (NPs) focuses on increasing the concentration of active sites, particularly oxygen vacancies, which are critical for improving both photocatalytic and electrocatalytic performance.To address this challenge, IrO2 nanoparticles were employed as electrocatalysts and doped with transition metal ions, specifically Cr and Co, to systematically investigate their dual photocatalytic and electrocatalytic properties. Structural and electronic characterizations confirmed that the doping process effectively induced the formation of oxygen vacancies. Among the doped systems, Cr-doped IrO2 (Cr@IrO2) NPs exhibited superior photocatalytic activity, which was attributed to significant improvements in visible light absorption compared to both undoped IrO2 and Co-doped IrO2 NPs. This enhancement is primarily ascribed to the incorporation of Cr ions on the IrO2 surface, which introduced a higher density of oxygen vacancies due to charge mismatch phenomena, thereby amplifying visible light absorption intensity and catalytic efficiency.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"72 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809435","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

Origin of ion bombardment induced Tb oxidation in Tb/Co multilayers

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162090

D. Kiphart, M. Krupiński, M. Mitura-Nowak, P.P. Michałowski, M. Kowacz, M. Schmidt, F. Stobiecki, G.D. Chaves-O’Flynn, P. Kuświk

引用次数: 0

Revolutionizing CO2 conversion for single-carbon products: Unveiling the photocatalytic magic of M6@TiO2 via First-Principles insights

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162085

Qiang Chen, Hongyang Xu, Chuan Liu, Xihong Ding, Yuanzheng Zhu, Shixia Wang, Chunguang Chen, Ping Cheng

{"title":"Revolutionizing CO2 conversion for single-carbon products: Unveiling the photocatalytic magic of M6@TiO2 via First-Principles insights","authors":"Qiang Chen, Hongyang Xu, Chuan Liu, Xihong Ding, Yuanzheng Zhu, Shixia Wang, Chunguang Chen, Ping Cheng","doi":"10.1016/j.apsusc.2024.162085","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162085","url":null,"abstract":"Metal clusters can be loaded as cocatalysts on the surface of TiO2 to promote the photocatalytic reduction of CO2. However, the specific mechanism of this reaction is still unclear. This study systematically investigates the performance of metal cluster (M6, M = Au, Ag, Mn, Cu, Sn, Ga, Mo and Bi) as the cocatalytic on the TiO2(101) surface towards the CO2 reduction reaction through density functional theory (DFT) calculations. Metal clusters as co-catalysts supported on TiO2 can improve the light absorption intensity of photocatalysts. Moreover, it was found that these metal clusters significantly improved the electron transport efficiency of TiO2, thereby enhancing the efficiency of photocatalytic CO2 reduction. Cu6@TiO2 showed the highest photocatalytic activity, with a maximum Gibbs free energy change (ΔGmax) of 0.46 eV. The study also revealed a strong correlation between catalytic activity and the adsorption strength of key intermediates, indicating that enhancing the adsorption differences of key intermediates can improve the efficiency of photocatalysts. In addition, Mn6@TiO2, Cu6@TiO2, Mo6@TiO2, Au6@TiO2, and Ga6@TiO2 can effectively suppress the hydrogen evolution reaction (HER), demonstrating excellent photocatalytic performance and high selectivity. This work provides useful insights into the reduction of CO2 to form single carbon products on TiO2 catalysts loading metal clusters.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"14 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809425","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

First-principle study on the conversion of CO2 to value-added C1 products using single-atom cocatalysts on ZnS

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162086

Chaxiu Guo, Xingxing Wei, Hong Pang, Junjie Zhou, Renzhi Ma

{"title":"First-principle study on the conversion of CO2 to value-added C1 products using single-atom cocatalysts on ZnS","authors":"Chaxiu Guo, Xingxing Wei, Hong Pang, Junjie Zhou, Renzhi Ma","doi":"10.1016/j.apsusc.2024.162086","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162086","url":null,"abstract":"Photocatalytic CO2 reduction reaction (CO2RR) offers a sustainable solution to alleviate the greenhouse effect, and produce various chemical products and fuels. This study investigated the structural stability, electronic structure, catalytic activity, and selectivity of M/ZnS (M = Pd, Ag, Pt, Au, Al, Ga, In, Sn and Cu) photocatalysts based on the density functional theory (DFT) under the first-principle framework. The results suggested that all nine metal elements preferred substitution at the outmost surface site. Among these photocatalysts, four (Al/ZnS, Ga/ZnS, In/ZnS, and Sn/ZnS) are more favorable to conduct CO2RR than hydrogen evolution reaction (HER) in aqueous phase. This study explored the potential generation of various C1 products (such as HCOOH, CH3OH, and CH4) on these four single-atom metals and revealed that M/ZnS (M = Al, Ga, and In) are more likely to selectively produce CH3OH/CH4, while Sn/ZnS is more inclined to produce HCOOH. The other five M/ZnS (M = Pd, Ag, Pt, Au, Cu) can induce a severe HER competition, which may be inhibited by using non-aqueous system. This study provides valuable theoretical guidance for the screening and development of high-performance photocatalysts for CO2RR.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"4 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809428","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

Corrigendum to “Study on the mechanism of enhancing photocurrent in TiS2 photodetector by vacancy- and substitution-doping” [Appl. Surf. Sci. 685 (2025) 161956]

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162082

Ziqiang Gu, Xinshuo Xie, Bin Hao, Lin Zhu

引用次数: 0

Surface chemical grafting of two-dimensional MoSxSey for the adsorption and activation of CO2 in visible-light photoreduction

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162084

Deng Long, Hongyu Chen, Weijia Chen, Jingqin Cui, Miao Lu, Xinyi Chen

引用次数: 0

SERS substrate of Ag decorated flexible wrinkled nanostage and anti-counterfeiting application

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162071

Yuxia Wang, Yongjun Zhang, Yaxin Wang, Fan Zhang, Hexing Ren, Renxian Gao, Kun Zhang, Fengyi Zhang, Rufei Cui, Xiaoyu Zhao

{"title":"SERS substrate of Ag decorated flexible wrinkled nanostage and anti-counterfeiting application","authors":"Yuxia Wang, Yongjun Zhang, Yaxin Wang, Fan Zhang, Hexing Ren, Renxian Gao, Kun Zhang, Fengyi Zhang, Rufei Cui, Xiaoyu Zhao","doi":"10.1016/j.apsusc.2024.162071","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162071","url":null,"abstract":"The flexible SERS substrates have received great interests in recent years due to the feature of deformations and portability. In this paper, the flexible SERS substrate of the Ag/PET wrinkled nanostage array were fabricated by self-assembly technology and plasma etching technology based on transparent PET film. The three-dimensional nanostage composed of muti-wrinkled sidewalls improved significantly residence space for probe molecules. The decoration of Ag nanoparticles within these wrinkles resulted in a 10-fold SERS enhancement compared to rigid Si substrates with smooth surfaces, attributed to the formation of numerous uniform hot spots. Combining the various shapes of the nanostructures with the characteristics of SERS spectra, the flexible nanostage was used as the map of anti-counterfeiting coding. The average height, top diameter and bottom diameter of each nanostage formed a unique three-stage anti-counterfeiting code. At the same time, combined with the SERS spectra, the anti-counterfeiting bar code was further compiled according to the peak position and intensity. Our work provided an idea for the preparation of economical and high-performance flexible SERS substrate and broadened its application field.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"28 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809427","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

Nanostructured crystalline-amorphous FeCrCoNi-SiC high-entropy alloy thin film with a superior combination of strength and corrosion resistance

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2024-12-12 DOI: 10.1016/j.apsusc.2024.162091

Zhenguang Gao, Shuqing Yuan, Xu Hou, Jinshu Xie, Wenqing Yang, K.C. Chan, Xu-Sheng Yang

{"title":"Nanostructured crystalline-amorphous FeCrCoNi-SiC high-entropy alloy thin film with a superior combination of strength and corrosion resistance","authors":"Zhenguang Gao, Shuqing Yuan, Xu Hou, Jinshu Xie, Wenqing Yang, K.C. Chan, Xu-Sheng Yang","doi":"10.1016/j.apsusc.2024.162091","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162091","url":null,"abstract":"The advancement of ultra-strong and corrosion-resistant high-entropy alloys (HEAs) is pivotal for diverse engineering applications. In this work, magnetron co-sputtering is employed to construct a novel nanostructured crystalline-amorphous FeCrCoNi-SiC (NC C-A HEA-SiC) composite film, featuring FeCoNi-rich nanograins encapsulated by CrSiC-segregated amorphous grain boundaries (GBs). Results show that this nanocomposite film exhibits exceptional compressive yield stress (YS) of ∼3.5 GPa, significantly higher than ∼0.9 GPa in coarse-grained FeCrCoNi (CG HEA) bulk and ∼2.0 GPa in nanocrystalline FeCrCoNi (NC HEA) film. Detailed microstructural analyses unveil that ultrahigh strength with notable plasticity in nanocomposite film stems from co-deformation mechanisms involving initial preserved dislocation activities within nanograins and subsequent amorphous GB crystallization-induced grain coarsening. Additionally, the NC C-A HEA-SiC composite film shows lowest corrosion current density (icorr) of 2.98 × 10−8 A/cm2 in 3.5 wt% NaCl solution, relative to 1.49 × 10−7 A/cm2 in CG HEA bulk and 5.80 × 10−8 A/cm2 in NC HEA film. The enhanced anti-corrosive performance primarily results from CrSiC-rich amorphous GBs that facilitate the formation of dense protective layer and balance corrosion potential between nanograins and GBs to foster a uniform corrosion process. This work provides valuable insights into designing innovative HEAs with superior mechanical-anticorrosion synergy.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"73 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816090","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