Applied Surface Science最新文献_第7页

Enhanced photoelectrochemical and photocatalytic performance of SILAR deposited Zn2SnO4 inverse spinels SILAR沉积Zn2SnO4逆尖晶石的光电化学和光催化性能增强

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-24 DOI: 10.1016/j.apsusc.2025.164153

M.R. Alfaro Cruz , R. Garza-Hernandez , Mayur A. Gaikwad , Jin Hyeok Kim , Leticia M. Torres-Martínez , Jong-Sook Lee

{"title":"Enhanced photoelectrochemical and photocatalytic performance of SILAR deposited Zn2SnO4 inverse spinels","authors":"M.R. Alfaro Cruz , R. Garza-Hernandez , Mayur A. Gaikwad , Jin Hyeok Kim , Leticia M. Torres-Martínez , Jong-Sook Lee","doi":"10.1016/j.apsusc.2025.164153","DOIUrl":"10.1016/j.apsusc.2025.164153","url":null,"abstract":"<div><div>This study presents the synthesis of Zn2SnO4 inverse spinel nanostructures using the successive ionic layer adsorption and reaction (SILAR) method, focusing on their photoelectrochemical (PEC) and photocatalytic properties for water oxidation and CO2 photoreduction. Zn2SnO4 films were deposited with varying cycles (30, 60, and 90), resulting in a mixed-phase composition of SnO2 and Zn2SnO4, as evidenced by XRD and Raman analyses. Among these, the film deposited with 60 cycles (60/ZTO) exhibited superior PEC performance, achieving a photocurrent density of 0.624 mA/cm2 at 1.23 V vs RHE. This enhanced performance is attributed to its improved crystallinity and surface morphology with an improved charge transfer mechanism. The presence of a higher Sn concentration in the film surface allows the increase in photocatalytic hydrogen production, as, after three days of the test, the hydrogen generation increases four times than the first day of the test, owing to the presence of different Sn and Zn defects where the reaction takes place. Additionally, the 60/ZTO film demonstrated the capability to continuously reduce CO2 into CH2O2 and CH2O, highlighting its potential for sustainable fuel generation. These findings emphasize the importance of deposition conditions in optimizing Zn2SnO4 films for clean energy applications.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164153"},"PeriodicalIF":6.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701725","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

Electrochemical sensor based on Cu(II) coordination covalent organic framework for ultra-sensitive and specific detection of paclitaxel 基于Cu（II）配位共价有机骨架的电化学传感器超灵敏特异检测紫杉醇

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-24 DOI: 10.1016/j.apsusc.2025.164143

Wenlong Li , Li Zhao , Yuanhu Tang , Yunze Ren , Shujie Wang

{"title":"Electrochemical sensor based on Cu(II) coordination covalent organic framework for ultra-sensitive and specific detection of paclitaxel","authors":"Wenlong Li , Li Zhao , Yuanhu Tang , Yunze Ren , Shujie Wang","doi":"10.1016/j.apsusc.2025.164143","DOIUrl":"10.1016/j.apsusc.2025.164143","url":null,"abstract":"<div><div>In this study, a MWCNT/COF@Cu(II)/GCE electrochemical sensor based on Cu(II)-coordinated covalent organic framework (COF) was developed for the efficient detection of paclitaxel (PTX) content in Taxus cuspidata suspended cells extract. Specifically, a COF was constructed through an ambient temperature synthesis strategy, utilizing 4,4′,4′’-(1,3,5-triazine-2,4,6-triyl)trisaniline (TTA) and 2,6-pyridinedialdehyde (PDA) as the fundamental building blocks. Subsequently, Cu(II) was immobilized on the COF surface by pyridinic and imine groups, followed by integration with MWCNT, to fabricate an electrode modification material MWCNT@COF@Cu(II) with enhanced charge transfer kinetics and electrocatalytic activity. The results showed that the modified electrode significantly improved the electrochemically active area and electron transport capacity, and had excellent electrochemical detection performance of PTX. The sensor’s detection range is 0.5 to 20 μM, and the PTX detection limit is 1.6 nM. Furthermore, quantum chemical simulations reveal the high conductivity mechanism on MWCNT/COF@Cu(II)/GCE and the possible electrooxidation mechanism for PTX. Finally, the sensor showed superior detection performance in the actual sample detection, with a recovery rate of 98.22 %–103.03 %. These results suggest that MWCNT@COF@Cu(II)/GCE has the potential to effectively detect PTX from T. cuspidata suspended cell extract.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164143"},"PeriodicalIF":6.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701748","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

In2O3/TiN bi-layer electrode for ZrO2-based metal-insulator-metal capacitor 用于zro2基金属-绝缘体-金属电容器的In2O3/TiN双层电极

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-24 DOI: 10.1016/j.apsusc.2025.164149

Yoona Choi , Seungwoo Lee , Jonghwan Jeong , Donghyun Kim , Hansol Oh , Yongjoo Park , Woojin Jeon

{"title":"In2O3/TiN bi-layer electrode for ZrO2-based metal-insulator-metal capacitor","authors":"Yoona Choi , Seungwoo Lee , Jonghwan Jeong , Donghyun Kim , Hansol Oh , Yongjoo Park , Woojin Jeon","doi":"10.1016/j.apsusc.2025.164149","DOIUrl":"10.1016/j.apsusc.2025.164149","url":null,"abstract":"<div><div>This study investigates the improvement of the electrical properties in TiN/ZrO2/TiN metal–insulator-metal (MIM) capacitors for dynamic random access memory (DRAM) applications through the introduction of In2O3. The oxidation potential between the TiN electrode and the ZrO2 dielectric film induces an oxygen scavenging effect, resulting in the formation of oxygen vacancies within the ZrO2. This formation of oxygen vacancies severely degrades not only the electrical properties but also the overall performance of MIM capacitors. By introducing of an In2O3 buffer layer at the ZrO2/TiN interface, we effectively reduce oxygen vacancies by supplying oxygen to the ZrO2 and TiOxNy interfacial layer, based on low oxygen vacancy formation energy of In2O3. Furthermore, the cubic phase of In2O3 induced into a tetragonal phase of ZrO2. Consequently, the introduction of In2O3 increases the capacitance density and leakage characteristic of the MIM capacitor, simultaneously, by enhancing the crystallinity and suppressing the formation of oxygen vacancy in ZrO2. Eventually, the insertion of 1.5 nm of In2O3 significantly improved the leakage current characteristics, achieving a minimum equivalent oxide thickness of 0.75 nm that satisfies the DRAM leakage current density specification (<10−7 A/cm2) at an applied voltage of + 0.8 V.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164149"},"PeriodicalIF":6.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144693621","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

Surface metallisation of acrylonitrile–butadiene–styrene (ABS) composites via a novel electroplating technique 利用新型电镀技术对丙烯腈-丁二烯-苯乙烯（ABS）复合材料进行表面金属化

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-24 DOI: 10.1016/j.apsusc.2025.164146

Piotr Rytlewski , Piotr Augustyn , Rafał Malinowski , Bogusław Budner , Arkadiusz Antończak

引用次数: 0

Fabrication of atomic-level step-terrace structure of sapphire using atmospheric pressure plasma 常压等离子体制备蓝宝石原子级阶梯结构

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-24 DOI: 10.1016/j.apsusc.2025.164152

Jinhao Zhang , Yinhui Wang , Yongjie Zhang , Zejin Zhan , Zhixian Chen , Hui Deng

{"title":"Fabrication of atomic-level step-terrace structure of sapphire using atmospheric pressure plasma","authors":"Jinhao Zhang , Yinhui Wang , Yongjie Zhang , Zejin Zhan , Zhixian Chen , Hui Deng","doi":"10.1016/j.apsusc.2025.164152","DOIUrl":"10.1016/j.apsusc.2025.164152","url":null,"abstract":"<div><div>Sapphire with atomic-level step-terrace structure is a high-quality epitaxial growth substrate. However, the traditional manufacturing methods combining chemical mechanical polishing (CMP) and high-temperature annealing (HTA) are limited by processing efficiency and the size of the annealing furnace chamber. This study proposes a novel process for fabrication of atomic-level step-terrace structure of sapphire using atmospheric pressure plasma. Firstly, microwave plasma-assisted polishing (MW-PAP) is used to rapidly reduce the roughness of the lapped surface, and then subsurface damage is repaired and the step-terrace structure is formed by plasma-enabled atomic-scale reconstruction (PEAR). Surface composition and morphology analyses have shown that based on the mechanism of hydroxyl dehydration condensation, MW-PAP can reduce the Sa roughness from 146 nm to 4.6 nm within 30 min. Subsurface characterizations indicate that during the MW-PAP process, the surface damage layer is converted into an amorphous phase and rapidly removed. The amorphous layer and sub-surface damage are repaired in the subsequent PEAR process, leading to an improvement in sapphire crystallinity. Additionally, in situ scratching experiments indicate that during the PEAR process, scratches can be healed under the influence of atomic migration due to plasma irradiation. Simultaneously, driven by the minimization of surface energy, surface atoms are induced to migrate and the step-terrace structure is formed. The plasma-based hybrid processing is conducted in an atmospheric environment, enabling the formation of step-terrace structure from lapped sapphire in approximately one hour, which is expected to enrich the manufacturing theory of high-quality substrates.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164152"},"PeriodicalIF":6.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701722","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

Construction of S-scheme melem hydrate/g-C3N5 heterojunction for enhanced photocatalytic performance under LED light irradiation S-scheme水合melem /g-C3N5异质结在LED光照射下增强光催化性能的构建

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-24 DOI: 10.1016/j.apsusc.2025.164121

Vinh Huu Nguyen, Taeyoon Lee, Trinh Duy Nguyen

{"title":"Construction of S-scheme melem hydrate/g-C3N5 heterojunction for enhanced photocatalytic performance under LED light irradiation","authors":"Vinh Huu Nguyen, Taeyoon Lee, Trinh Duy Nguyen","doi":"10.1016/j.apsusc.2025.164121","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164121","url":null,"abstract":"The optical and electronic properties of g-C3N5 make it a promising photocatalytic material, yet bulk g-C3N5 suffers from high charge recombination and trapping, limiting its effectiveness. Our study addresses these challenges through a controlled acid treatment of bulk g-C3N5 using a concentrated H2SO4/HNO3 mixture. This process exfoliates g-C3N5 into nanosheets while simultaneously fragmenting it into melem units and assembling these fragments into rod-like melem structures. These interconnected structures within the melem hydrate/g-C3N5 composite form effective charge-transfer bridges, enabling enhanced charge migration between melem hydrate and g-C3N5 components. The hybrid melem hydrate/g-C3N5 catalyst demonstrated a remarkable tetracycline hydrochloride (TCH) degradation efficiency of 98.80 %, significantly outperforming the 50.55 % degradation achieved by bulk g-C3N5. This is due to increased surface area and the formation of an S-scheme heterojunction, promoting effective charge separation. The study also examines the impact of reaction parameters like pH and catalyst concentration on degradation efficiency, and investigates degradation pathways and toxicity using LC-MS and ECOSAR. This research provides an effective strategy for designing S-scheme heterojunction materials based on g-C3N5, significantly enhancing the photocatalytic activity of g-C3N5 and broadening the potential application of of g-C3N5-based systems.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"18 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144693616","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

Interface engineering of ZIF-67 decorated GdxBi1-xVO4/ByC3-yN4 dual S-scheme heterojunction for solar driven hydrogen production ZIF-67修饰GdxBi1-xVO4/ByC3-yN4双S-scheme异质结太阳能制氢界面工程

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-07-23 DOI: 10.1016/j.apsusc.2025.164120

Vijay Vel Rajankumar, Siva Chidambaram

{"title":"Interface engineering of ZIF-67 decorated GdxBi1-xVO4/ByC3-yN4 dual S-scheme heterojunction for solar driven hydrogen production","authors":"Vijay Vel Rajankumar, Siva Chidambaram","doi":"10.1016/j.apsusc.2025.164120","DOIUrl":"10.1016/j.apsusc.2025.164120","url":null,"abstract":"<div><div>The deliberately modified BiVO4/g-C3N4 heterojunction was prepared with B3+ and Gd3+ ions incorporated in g-C3N4 and BiVO4 lattices, respectively. The GdxBi1-xVO4 nanoparticles were nucleated over the surface of ByC3-yN4 sheets. The functionalized decoration of ZIF-67 over the surface led to augmented visible light absorption and facilitated adsorption of water molecules on the catalytic active sites. The configuration of band edge positions of individual catalysts prompted the formation of dual S-scheme heterojunction which promotes unidirectional flow of electrons. The formation of a dual S-scheme heterojunction enabled the composite to encompass wide range of redox potentials and retain stronger charge carriers at the band edges. The heterojunction presented a threefold enhanced photocurrent density when compared to raw samples. Scanning Kelvin probe measurements were done to understand the band bending and junction kinetics. It provided direct evidence for heterojunction formation and electron accumulation at the catalyst surface. Under direct sunlight, a maximum hydrogen production rate of 1993 µmol/h/g was obtained with an apparent quantum yield (AQE) of 2.25 %. Density functional theory calculations were employed to understand the distribution of energy states in individual catalyst material and their corresponding Fermi level positions were computed.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164120"},"PeriodicalIF":6.3,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144693617","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

Preparation of SnO2 electron transport layer using chemical-bath deposition with citric acid as a complexing agent for high-efficiency perovskite solar cells 以柠檬酸为络合剂的化学浴沉积法制备高效钙钛矿太阳能电池用SnO2电子传输层

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-23 DOI: 10.1016/j.apsusc.2025.164140

Can Cheng , Jionghua Wu , Siyi Ji , Renjie Wang , Qiao Zheng , Xinghui Wang , Shuying Cheng , Ling Wu

{"title":"Preparation of SnO2 electron transport layer using chemical-bath deposition with citric acid as a complexing agent for high-efficiency perovskite solar cells","authors":"Can Cheng , Jionghua Wu , Siyi Ji , Renjie Wang , Qiao Zheng , Xinghui Wang , Shuying Cheng , Ling Wu","doi":"10.1016/j.apsusc.2025.164140","DOIUrl":"10.1016/j.apsusc.2025.164140","url":null,"abstract":"<div><div>Organic-inorganic halide perovskite solar cells (PSCs) have experienced remarkable growth over the past decade, largely due to their exceptional power conversion efficiency (PCE). SnO2, commonly employed as the electron transport layer (ETL) in PSCs, is frequently fabricated using the chemical bath deposition (CBD) method. In traditional CBD formulations, thioglycolic acid (TGA) is used to enhance the adhesion of SnO2 particles to the substrate. However, the presence of residual TGA on the ETL surface can detrimentally affect device performance. To mitigate this issue, we substituted TGA with citric acid, which is free of thiol groups, preventing defects related to thiol-based agents. In addition, it could decompose during the annealing process and promotes the uniform growth of SnO2 crystals on FTO substrates. Additionally, KIO3 was introduced as a post-treatment agent to oxidize residual Sn2+ to Sn4+, reducing surface oxygen vacancies and increasing lattice oxygen content. This synergistic modification enhances SnO2 crystallinity and reduces defects, improving charge extraction and transport within the device. Furthermore, improved energy level alignment between SnO2 and the perovskite layer also benefits electron collection and transport. With these improvements, the optimized devices achieved a PCE of 24.91 % and significantly improved operational stability.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164140"},"PeriodicalIF":6.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144693806","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

Ce3+/Ce4+ redox-mediated defect engineering in ZnO/CeO2 heterojunctions: Theoretical and experimental elucidation of enhanced xylene sensing ZnO/CeO2异质结中Ce3+/Ce4+氧化还原介导的缺陷工程：增强二甲苯传感的理论和实验阐明

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-07-23 DOI: 10.1016/j.apsusc.2025.164129

Xiao Liang, Shiyang Fu, Hongze An, Xueying Song, Xu Zeng, Shuang Ding, Bo Ren, Xiaodong Yang, Jing Zhang

{"title":"Ce3+/Ce4+ redox-mediated defect engineering in ZnO/CeO2 heterojunctions: Theoretical and experimental elucidation of enhanced xylene sensing","authors":"Xiao Liang, Shiyang Fu, Hongze An, Xueying Song, Xu Zeng, Shuang Ding, Bo Ren, Xiaodong Yang, Jing Zhang","doi":"10.1016/j.apsusc.2025.164129","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164129","url":null,"abstract":"The development of efficient sensors for detecting volatile organic compounds (VOCs) like xylene is critical to mitigating health risks in household environments. This study presents a simple synthetic method and a rapid detection process for a xylene gas sensor. By employing a hydrothermal method, CeO2 nano-spheres were loaded onto flower-like ZnO, creating a ZnO/CeO2 heterojunction with a larger specific surface area and higher reactive oxygen content compared to pure ZnO. At an optimal operating temperature of 240 °C, the sensor demonstrates better xylene response, rapid response/recovery kinetics (2 s/3 s), excellent cyclability, and long-term stability. Combined experimental characterization (XPS, TEM) and DFT calculations reveal threefold enhancement mechanisms. The work function disparity between CeO2 and ZnO drives interfacial charge redistribution, inducing band bending and electron depletion layer formation at the heterojunction interface. Ce3+/Ce4+ redox cycling promotes oxygen vacancy formation, and hierarchical porosity optimizes gas diffusion and active site exposure. The heterojunction engineering strategy not only improves xylene selectivity but also establishes a generalizable approach for designing MOS-based sensors through synergistic interface and defect modulation. This work offers new insights into the design of MOS-based selective xylene detection materials through heterojunction engineering.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"18 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144693807","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 separation of fluorite from dolomite using cupferron: flotation performance and surface chemistry investigations 铜铁选择性分离白云石与萤石：浮选性能及表面化学研究

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-07-23 DOI: 10.1016/j.apsusc.2025.164137

Xiao Wang , Shuai Yuan , Peng Gao , Jiahao He , Pengcheng Tian

{"title":"Selective separation of fluorite from dolomite using cupferron: flotation performance and surface chemistry investigations","authors":"Xiao Wang , Shuai Yuan , Peng Gao , Jiahao He , Pengcheng Tian","doi":"10.1016/j.apsusc.2025.164137","DOIUrl":"10.1016/j.apsusc.2025.164137","url":null,"abstract":"<div><div>Fluorite and dolomite are difficult to separate due to their similar surface properties, as both are calcium-bearing minerals. In this study, the performance of cupferron as a collector for the selective flotation of fluorite and dolomite was compared with that of the conventional collector sodium oleate (NaOL) in the absence of depressants. Flotation experiments revealed that cupferron exhibits excellent selectivity for fluorite, whereas NaOL shows strong but non-selective collecting ability for both minerals. To elucidate the adsorption mechanism, various characterization techniques including contact angle measurements, FTIR, SEM, zeta potential analysis, XPS, and density functional theory (DFT) calculations were employed. Both collectors interact chemically with mineral surfaces; however, cupferron demonstrates significantly stronger and more selective binding to fluorite via Ca–O coordination, forming a stable five-membered chelate ring involving its N–O functional groups. In contrast, NaOL shows comparable chemical affinity to both fluorite and dolomite surfaces, leading to poor selectivity. The calculated adsorption energy of cupferron on fluorite is much more favorable than that on dolomite, consistent with the experimental findings. These results provide valuable insights into the selective flotation mechanism of cupferron and demonstrate its potential as an efficient collector for fluorite–dolomite separation.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164137"},"PeriodicalIF":6.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144693925","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