Surfaces and Interfaces最新文献_第4页

Investigating the nano-indentation and wear behaviour of AlCoCrFeNi/253MA at the atomic scale: Molecular dynamics simulation

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-27 DOI: 10.1016/j.surfin.2025.106129

Zhimin Liu , Guanghui Zhao , Yu Zhang , Juan Li , Huaying Li

As working conditions become increasingly complex and demanding, stainless steel often struggles to meet all performance requirements. Therefore, applying high-entropy alloy (HEA) coatings on the surface of stainless steel is essential for enhancing the material's overall performance. This study investigated the effects of various processing parameters—including loading speed (LS), cutting speed (CS), the number of polishing cycles, scratch depth, and temperature—on the AlCoCrFeNi HEA/253MA composite material at the nanoscale using nanoindentation and nano-scratch simulations. Additionally, the research discussed the impact of grain size on the material's wear resistance. The findings indicate that the interaction between abrasives and HEA coatings during the nanoindentation process can be divided into four stages: the long-distance stage, the attraction-dominant stage, the turning and equilibrium stage, and the repulsion-dominant stage (before contact, at -5 to 0 Å). The load gradually increases after contact between the abrasive and the HEA coating (0 to 20 Å), showing a positive correlation between LS and indentation force. Adding HEA coatings significantly reduces frictional and normal forces during nano-scratch testing, minimizing the fluctuations in force. After more than two polishing cycles, the frictional force F_x exhibits different variation patterns. The average coefficient of friction (COF) initially decreases and increases as grain size decreases. Conversely, the COF increases with rising temperature and scratch depth. At 1K, the atoms in the alloy are nearly stationary, resulting in low surface free energy. At 300K, the surface atoms arrange themselves into a more stable structure, thereby maximizing surface energy.

{"title":"Investigating the nano-indentation and wear behaviour of AlCoCrFeNi/253MA at the atomic scale: Molecular dynamics simulation","authors":"Zhimin Liu , Guanghui Zhao , Yu Zhang , Juan Li , Huaying Li","doi":"10.1016/j.surfin.2025.106129","DOIUrl":"10.1016/j.surfin.2025.106129","url":null,"abstract":"<div><div>As working conditions become increasingly complex and demanding, stainless steel often struggles to meet all performance requirements. Therefore, applying high-entropy alloy (HEA) coatings on the surface of stainless steel is essential for enhancing the material's overall performance. This study investigated the effects of various processing parameters—including loading speed (LS), cutting speed (CS), the number of polishing cycles, scratch depth, and temperature—on the AlCoCrFeNi HEA/253MA composite material at the nanoscale using nanoindentation and nano-scratch simulations. Additionally, the research discussed the impact of grain size on the material's wear resistance. The findings indicate that the interaction between abrasives and HEA coatings during the nanoindentation process can be divided into four stages: the long-distance stage, the attraction-dominant stage, the turning and equilibrium stage, and the repulsion-dominant stage (before contact, at -5 to 0 Å). The load gradually increases after contact between the abrasive and the HEA coating (0 to 20 Å), showing a positive correlation between LS and indentation force. Adding HEA coatings significantly reduces frictional and normal forces during nano-scratch testing, minimizing the fluctuations in force. After more than two polishing cycles, the frictional force F<sub>x</sub> exhibits different variation patterns. The average coefficient of friction (COF) initially decreases and increases as grain size decreases. Conversely, the COF increases with rising temperature and scratch depth. At 1K, the atoms in the alloy are nearly stationary, resulting in low surface free energy. At 300K, the surface atoms arrange themselves into a more stable structure, thereby maximizing surface energy.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106129"},"PeriodicalIF":5.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520929","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

Rapid preparation of mussel-inspired coatings with adjustable properties under electrochemical drive

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-27 DOI: 10.1016/j.surfin.2025.106121

Jianteng Sun , Jingwen Hu , Maofeng Liang , Lichao Gao , Haidong Cao , Tiantian Liu , Yu Zhao , Junfu Wei , Huan Zhang , Huicai Wang , Xiaoqing Zhang

Mussel-inspired coating is widely used in surface modification technology, but its applications are limited by the time-consuming preparation. Although the coating formation can be accelerated by speeding up the precursor oxidation or polymerization process, it still takes several hours and there is a mismatch between the reaction and the deposition. In this paper, a simple method was presented — electrochemical driving rapid mussel-inspired strategy that successfully reduced the coating formation time on the conductive substrate to 300 s. The polymerization mechanism of dopamine, catechol (CAT), and caffeic acid in the presence or absence of ethylenediamine (EDA) was discussed using cyclic voltammetry, and the results demonstrated that the presence of EDA could greatly promote the polymerization reaction. In addition to CAT, other 11 catechol derivatives could form coatings with EDA, confirming the versatility of the strategy. The properties of the coatings, such as amino density, surface wettability, and self-cleaning properties, could be adjusted by the delicate selection of different precursors. To demonstrate the application of this strategy, functional carbon felts with superhydrophobic/superoleophilic properties were prepared, and the results showed that effective separation of various oil-water mixtures could be realized, indicating that this strategy can be expected to be extended to practical applications.

{"title":"Rapid preparation of mussel-inspired coatings with adjustable properties under electrochemical drive","authors":"Jianteng Sun , Jingwen Hu , Maofeng Liang , Lichao Gao , Haidong Cao , Tiantian Liu , Yu Zhao , Junfu Wei , Huan Zhang , Huicai Wang , Xiaoqing Zhang","doi":"10.1016/j.surfin.2025.106121","DOIUrl":"10.1016/j.surfin.2025.106121","url":null,"abstract":"<div><div>Mussel-inspired coating is widely used in surface modification technology, but its applications are limited by the time-consuming preparation. Although the coating formation can be accelerated by speeding up the precursor oxidation or polymerization process, it still takes several hours and there is a mismatch between the reaction and the deposition. In this paper, a simple method was presented — electrochemical driving rapid mussel-inspired strategy that successfully reduced the coating formation time on the conductive substrate to 300 s. The polymerization mechanism of dopamine, catechol (CAT), and caffeic acid in the presence or absence of ethylenediamine (EDA) was discussed using cyclic voltammetry, and the results demonstrated that the presence of EDA could greatly promote the polymerization reaction. In addition to CAT, other 11 catechol derivatives could form coatings with EDA, confirming the versatility of the strategy. The properties of the coatings, such as amino density, surface wettability, and self-cleaning properties, could be adjusted by the delicate selection of different precursors. To demonstrate the application of this strategy, functional carbon felts with superhydrophobic/superoleophilic properties were prepared, and the results showed that effective separation of various oil-water mixtures could be realized, indicating that this strategy can be expected to be extended to practical applications.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106121"},"PeriodicalIF":5.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549645","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

Dual-responsive and renewable antimicrobial surfaces via catechol-based adhesion for dental unit water lines

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-27 DOI: 10.1016/j.surfin.2025.106130

Wei Liu , Shihua Mao , Yuedan Xu , Xinyang Jin , Yi Sun , Xinni Pan , Baiping Fu , Ling Zhang

The narrow and challenging-to-clean properties of dental unit water lines (DUWLs) allows for unchecked bacterial growth, while conventional daily disinfection struggles to eradicate persistent bacteria, posing a significant health risk. However, the existing coating preparation methods fail to achieve a long-term antibacterial effect and are arduous to prepare, thus rendering them inapplicable in the clinical practice of DUWLs. Herein, we prepared a smart, catechol-based temperature/acid dual-responsive antibacterial surface, combining stimulus-responsive polymers with bactericide just by immersion on the inner face of pipes. The synergistic effect of poly(N-isopropylacrylamide) (PNIPAM) on chain conformation transformation greatly promotes short-term bacterial release in response to temperature switching to maintain the antibacterial properties of polylysine (PL). The acid sensitivity of the imine bond joining polymers to PA facilitates the degradation of old coating and the synthesis post-renewal of new coating, thereby enhancing the long-term anti-bacterial response of DUWL finishes. The surface exhibits antimicrobial performances as below: (i) killing ∼85.0 % of the attached bacteria, (ii) releasing ∼96.8 % of the bacteria killed under temperature switching, (iii) further releasing under acid environment and (iv) restores the bactericidal and release effects after recoating. Moreover, the coating still exhibits excellent antibacterial/release performance in the clinical setting. This research offers an efficient, straightforward approach for resolving surface-associated bacterial challenges in DUWLs.

{"title":"Dual-responsive and renewable antimicrobial surfaces via catechol-based adhesion for dental unit water lines","authors":"Wei Liu , Shihua Mao , Yuedan Xu , Xinyang Jin , Yi Sun , Xinni Pan , Baiping Fu , Ling Zhang","doi":"10.1016/j.surfin.2025.106130","DOIUrl":"10.1016/j.surfin.2025.106130","url":null,"abstract":"<div><div>The narrow and challenging-to-clean properties of dental unit water lines (DUWLs) allows for unchecked bacterial growth, while conventional daily disinfection struggles to eradicate persistent bacteria, posing a significant health risk. However, the existing coating preparation methods fail to achieve a long-term antibacterial effect and are arduous to prepare, thus rendering them inapplicable in the clinical practice of DUWLs. Herein, we prepared a smart, catechol-based temperature/acid dual-responsive antibacterial surface, combining stimulus-responsive polymers with bactericide just by immersion on the inner face of pipes. The synergistic effect of poly(N-isopropylacrylamide) (PNIPAM) on chain conformation transformation greatly promotes short-term bacterial release in response to temperature switching to maintain the antibacterial properties of polylysine (PL). The acid sensitivity of the imine bond joining polymers to PA facilitates the degradation of old coating and the synthesis post-renewal of new coating, thereby enhancing the long-term anti-bacterial response of DUWL finishes. The surface exhibits antimicrobial performances as below: (i) killing ∼85.0 % of the attached bacteria, (ii) releasing ∼96.8 % of the bacteria killed under temperature switching, (iii) further releasing under acid environment and (iv) restores the bactericidal and release effects after recoating. Moreover, the coating still exhibits excellent antibacterial/release performance in the clinical setting. This research offers an efficient, straightforward approach for resolving surface-associated bacterial challenges in DUWLs.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106130"},"PeriodicalIF":5.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549738","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

Highly selective conversion of CO2 to CO at Bi defect-modified Bi2WO6 nanosheets

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-27 DOI: 10.1016/j.surfin.2025.106132

Tian Luo , Xiaoqian Xu , Long Zeng , Meng Luo , Yanqing Liao , Hong Kang , Jiahe Zhai , Aziz Habibi-Yangjeh , Chuanyi Wang

Photocatalytic conversion of CO₂ into profitable chemical products is crucial to solving energy problems and reducing the greenhouse effect, but achieving effective separation of photogenerated charge pairs and favorable reaction pathway remain to be a grand challenge in designing highly photoactive materials for efficient catalysis. In this work, we successfully integrated bismuth (Bi) defects into Bi₂WO₆ nanosheets (BWO-2) utilizing an anion-exchange approach, which improved the separation of charge carriers generated by photos. Notably, the incorporation of Bi defects resulted in a notable increase in the lifetime of photogenerated charge carriers in Bi₂WO₆ nanosheets, extending from 7.03 ns to 23.68 ns as demonstrated by time-resolved photoluminescence measurement, thereby significantly improving the separation of photogenerated carriers of charge. Therefore, BWO-2 outperformed unmodified Bi₂WO₆ nanosheets by approximately 2.56 times in the photocatalytic reduction of CO₂ to CO, achieving nearly 100 % selectivity and a CO production rate of 39.76 μmol·g⁻¹·h⁻¹ upon visible light with an intensity of 280 mW·cm⁻². Furthermore, in-situ FTIR spectroscopy unambiguously tracks the dynamic formation of *COOH intermediates during photocatalytic CO₂ reduction on BWO-2 surfaces. Mechanistic analysis reveals that Bi defects function as bifunctional catalytic centers, synergistically enhancing reactant adsorption and activation through electron-deficient regions, thereby accelerating the kinetically limiting *COOH → *CO transformation. This defect-mediated conversion pathway directly promotes the highly selective photocatalytic conversion of CO₂ to CO. This study offers a practical way to create a superior active photocatalysts for the highly selective conversion of CO₂ to CO by combining metal defects.

{"title":"Highly selective conversion of CO2 to CO at Bi defect-modified Bi2WO6 nanosheets","authors":"Tian Luo , Xiaoqian Xu , Long Zeng , Meng Luo , Yanqing Liao , Hong Kang , Jiahe Zhai , Aziz Habibi-Yangjeh , Chuanyi Wang","doi":"10.1016/j.surfin.2025.106132","DOIUrl":"10.1016/j.surfin.2025.106132","url":null,"abstract":"<div><div>Photocatalytic conversion of CO<sub>2</sub> into profitable chemical products is crucial to solving energy problems and reducing the greenhouse effect, but achieving effective separation of photogenerated charge pairs and favorable reaction pathway remain to be a grand challenge in designing highly photoactive materials for efficient catalysis. In this work, we successfully integrated bismuth (Bi) defects into Bi<sub>2</sub>WO<sub>6</sub> nanosheets (BWO-2) utilizing an anion-exchange approach, which improved the separation of charge carriers generated by photos. Notably, the incorporation of Bi defects resulted in a notable increase in the lifetime of photogenerated charge carriers in Bi<sub>2</sub>WO<sub>6</sub> nanosheets, extending from 7.03 ns to 23.68 ns as demonstrated by time-resolved photoluminescence measurement, thereby significantly improving the separation of photogenerated carriers of charge. Therefore, BWO-2 outperformed unmodified Bi<sub>2</sub>WO<sub>6</sub> nanosheets by approximately 2.56 times in the photocatalytic reduction of CO<sub>2</sub> to CO, achieving nearly 100 % selectivity and a CO production rate of 39.76 μmol·g<sup>−1</sup>·h<sup>−1</sup> upon visible light with an intensity of 280 mW·cm<sup>−2</sup>. Furthermore, in-situ FTIR spectroscopy unambiguously tracks the dynamic formation of *COOH intermediates during photocatalytic CO<sub>2</sub> reduction on BWO-2 surfaces. Mechanistic analysis reveals that Bi defects function as bifunctional catalytic centers, synergistically enhancing reactant adsorption and activation through electron-deficient regions, thereby accelerating the kinetically limiting *COOH → *CO transformation. This defect-mediated conversion pathway directly promotes the highly selective photocatalytic conversion of CO<sub>2</sub> to CO. This study offers a practical way to create a superior active photocatalysts for the highly selective conversion of CO<sub>2</sub> to CO by combining metal defects.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106132"},"PeriodicalIF":5.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549650","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

Ultrafast, self-powered and highly-stable PtS-Ga₂O₃ heterojunction photodetector for broad-spectrum sensing

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-27 DOI: 10.1016/j.surfin.2025.106125

Damanpreet Kaur , Rohit Dahiya , Vinit Sheokand, Gaurav Bassi, Mukesh Kumar

Noble metal chalcogenides (nMC), special class of 2D non-layered materials, are gaining traction due to their exceptional qualities like high carrier mobility and higher active sites at surface. From optoelectronics perspective, their unsaturated dangling bonds lead to higher photoresponse but at expense of prolonged carrier lifetime, thereby making devices slower. Platinum monosulfide (PtS) is one such nMC possessing great potential but currently plagued with slower switching times and stability issues. Herein, we report an ultra-fast and self-powered broadband photodetector of PtS by interfacing with amorphous Ga₂O₃ leading to microsecond response. Heterojunction devices show speeds of 84µs/100µs at self-bias (biasing reduces it further) and are stable even after 7500 h as opposed to bare PtS device, which shows neither. Interfacial band alignment explains working of device, thereby, revealing synergistic combination of nMC with wide-bandgap material, broadening the horizon of nMC-based self-powered optoelectronics.

{"title":"Ultrafast, self-powered and highly-stable PtS-Ga₂O₃ heterojunction photodetector for broad-spectrum sensing","authors":"Damanpreet Kaur , Rohit Dahiya , Vinit Sheokand, Gaurav Bassi, Mukesh Kumar","doi":"10.1016/j.surfin.2025.106125","DOIUrl":"10.1016/j.surfin.2025.106125","url":null,"abstract":"<div><div>Noble metal chalcogenides (nMC), special class of 2D non-layered materials, are gaining traction due to their exceptional qualities like high carrier mobility and higher active sites at surface. From optoelectronics perspective, their unsaturated dangling bonds lead to higher photoresponse but at expense of prolonged carrier lifetime, thereby making devices slower. Platinum monosulfide (PtS) is one such nMC possessing great potential but currently plagued with slower switching times and stability issues. Herein, we report an ultra-fast and self-powered broadband photodetector of PtS by interfacing with amorphous Ga<sub>2</sub>O<sub>3</sub> leading to microsecond response. Heterojunction devices show speeds of 84µs/100µs at self-bias (biasing reduces it further) and are stable even after 7500 h as opposed to bare PtS device, which shows neither. Interfacial band alignment explains working of device, thereby, revealing synergistic combination of nMC with wide-bandgap material, broadening the horizon of nMC-based self-powered optoelectronics.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106125"},"PeriodicalIF":5.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549820","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

Ouzo effect: Insights from Gibbsian surface thermodynamics

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-26 DOI: 10.1016/j.surfin.2025.106115

Mahdi Mottaghi , Fatemeh Eslami , Leila Zargarzadeh

The Ouzo effect, significant in cosmetics, health products, and pharmaceuticals, involves the formation of droplets through solvent exchange which leads to the supersaturation of solutes. This research investigates the thermodynamics of the Ouzo effect in the water-cyclohexane-ethanol system, taking into account the effect of the curved interface of the droplet for better understanding and control of droplet formation and its characteristics. Phase diagrams were plotted considering both flat and curved interfaces, and free energy calculations for the droplet-liquid system were performed based on the droplet radius. We investigated the effect of various factors, including feed composition, supersaturation, initial mole amount, and interfacial tension, to determine the energy barrier and droplet size in stable and unstable states. Our calculations confirm the experimental observations that the presence of a curved interface during droplet formation shifts the equilibrium composition towards the spinodal curve. Results also demonstrated that a stable cyclohexane-rich or water-rich droplet can form, after passing an energy barrier (unstable equilibrium), provided that adequate supersaturation exists in the confined solution. Increased supersaturation lowers the energy barrier and reduces the droplet radius in unstable states, facilitating droplet formation. Conversely, higher supersaturation results in the formation of more stable droplets with larger sizes. Verification against existing experimental data qualitatively validates the presented model.

{"title":"Ouzo effect: Insights from Gibbsian surface thermodynamics","authors":"Mahdi Mottaghi , Fatemeh Eslami , Leila Zargarzadeh","doi":"10.1016/j.surfin.2025.106115","DOIUrl":"10.1016/j.surfin.2025.106115","url":null,"abstract":"<div><div>The Ouzo effect, significant in cosmetics, health products, and pharmaceuticals, involves the formation of droplets through solvent exchange which leads to the supersaturation of solutes. This research investigates the thermodynamics of the Ouzo effect in the water-cyclohexane-ethanol system, taking into account the effect of the curved interface of the droplet for better understanding and control of droplet formation and its characteristics. Phase diagrams were plotted considering both flat and curved interfaces, and free energy calculations for the droplet-liquid system were performed based on the droplet radius. We investigated the effect of various factors, including feed composition, supersaturation, initial mole amount, and interfacial tension, to determine the energy barrier and droplet size in stable and unstable states. Our calculations confirm the experimental observations that the presence of a curved interface during droplet formation shifts the equilibrium composition towards the spinodal curve. Results also demonstrated that a stable cyclohexane-rich or water-rich droplet can form, after passing an energy barrier (unstable equilibrium), provided that adequate supersaturation exists in the confined solution. Increased supersaturation lowers the energy barrier and reduces the droplet radius in unstable states, facilitating droplet formation. Conversely, higher supersaturation results in the formation of more stable droplets with larger sizes. Verification against existing experimental data qualitatively validates the presented model.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106115"},"PeriodicalIF":5.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563389","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

Exploring the relationship between reaction temperature and photodetection properties in Sb2Se3 thin film-based devices

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-25 DOI: 10.1016/j.surfin.2025.106109

Mehmet Ali Olğar , Salih Yılmaz , Fazal Rehman , Emin Bacaksız

This paper focuses on optimizing the reaction temperature of Sb₂Se₃ thin films for photodetector applications. The films were grown using a two-stage method on glass substrates. Structural analysis revealed the formation of the orthorhombic Sb₂Se₃ phase along the (020) plane, and increasing the reaction temperature up to 400 °C improved the crystal quality. Notably, the most promising structural properties were achieved for Sb₂Se₃ thin films reacted at 380 °C. Raman spectra confirmed the presence of tetragonal and amorphous selenium, along with Sb₂Se₃. Morphological analysis showed that a horizontally aligned rod morphology developed as the Sb₂Se₃ thin film grew, with the rod sizes increasing as the reaction temperature reached to 400 °C. X-ray photoelectron spectroscopy (XPS) revealed the formation of Sb-Se and Sb-O bonds, along with the presence of unreacted oxygen atoms near the surface of Sb₂Se₃ thin films reacted at 340 °C. Photoluminescence data indicated a bandgap value of 1.24 eV for Sb₂Se₃ films reacted at 380 °C. The current-voltage (I-V) curves exhibited a linear dependence for all Sb₂Se₃-based devices, suggesting ohmic contact between the films and the electrodes. The fastest photoresponse was observed for the photodetector annealed at 380 °C, with rise and fall times of 26 ms and 40 ms, respectively. Additionally, the highest responsivity (R = 8.0 × 10^–4 A/W), detectivity (D* = 3.8 × 10⁶ Jones), and external quantum efficiency (EQE = 16.3%) were achieved by the same device, indicating that the optimal reaction temperature for Sb₂Se₃ thin films and their photodetector applications is approximately at 380 °C.

{"title":"Exploring the relationship between reaction temperature and photodetection properties in Sb2Se3 thin film-based devices","authors":"Mehmet Ali Olğar , Salih Yılmaz , Fazal Rehman , Emin Bacaksız","doi":"10.1016/j.surfin.2025.106109","DOIUrl":"10.1016/j.surfin.2025.106109","url":null,"abstract":"<div><div>This paper focuses on optimizing the reaction temperature of Sb<sub>2</sub>Se<sub>3</sub> thin films for photodetector applications. The films were grown using a two-stage method on glass substrates. Structural analysis revealed the formation of the orthorhombic Sb<sub>2</sub>Se<sub>3</sub> phase along the (020) plane, and increasing the reaction temperature up to 400 °C improved the crystal quality. Notably, the most promising structural properties were achieved for Sb<sub>2</sub>Se<sub>3</sub> thin films reacted at 380 °C. Raman spectra confirmed the presence of tetragonal and amorphous selenium, along with Sb₂Se₃. Morphological analysis showed that a horizontally aligned rod morphology developed as the Sb<sub>2</sub>Se<sub>3</sub> thin film grew, with the rod sizes increasing as the reaction temperature reached to 400 °C. X-ray photoelectron spectroscopy (XPS) revealed the formation of Sb-Se and Sb-O bonds, along with the presence of unreacted oxygen atoms near the surface of Sb₂Se₃ thin films reacted at 340 °C. Photoluminescence data indicated a bandgap value of 1.24 eV for Sb<sub>2</sub>Se<sub>3</sub> films reacted at 380 °C. The current-voltage (I-V) curves exhibited a linear dependence for all Sb<sub>2</sub>Se<sub>3</sub>-based devices, suggesting ohmic contact between the films and the electrodes. The fastest photoresponse was observed for the photodetector annealed at 380 °C, with rise and fall times of 26 ms and 40 ms, respectively. Additionally, the highest responsivity (<em>R</em> = 8.0 × 10<sup>–4</sup> A/W), detectivity (D* = 3.8 × 10<sup>6</sup> Jones), and external quantum efficiency (EQE = 16.3%) were achieved by the same device, indicating that the optimal reaction temperature for Sb<sub>2</sub>Se<sub>3</sub> thin films and their photodetector applications is approximately at 380 °C.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106109"},"PeriodicalIF":5.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526608","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

Using iron–oxide nanoparticles synthesized at varying temperatures to remove Cr(VI): Characterization, adsorption mechanism, and optimization study

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-25 DOI: 10.1016/j.surfin.2025.106113

Shreya Ganguly, Sayantan Ganguly

Hexavalent Chromium [Cr(VI)] is a toxic heavy metal and a notable health hazard. Thus, proper remediation method must be employed for its removal from contaminated water. Iron–oxide nanoparticles have been employed multiple times as an adsorbent for the removal of Cr(VI); however, the adsorption capacity obtained was not sufficiently high.Therefore, this study attempts to synthesize iron–oxide nanoparticles at different temperatures of 25̊ °C, 60̊ °C, and 90̊ °C, respectively and improve both its adsorption efficiency and capacity substantially. Firstly, the iron–oxide nanoparticles were synthesized by the co–precipitation method and investigations on the surface morphologies, sizes, chemical compositions and magnetic properties were carried out by several characterization methods. Next, iron–oxide nanoparticles were used as adsorbents in batch equilibrium studies to effectively remove Cr(VI). A number of parameters, including dosage and contact time, were examined in order to determine how they affected the adsorption process. Using the iron–oxide nanoparticles synthesised at 25 °C (room temperature), 60 °C, and 90 °C, the optimal removal efficiencies recorded were 81.78%, 82.29%, and 83.82% for a Cr(VI) content of 10 mg/L, respectively. Subsequent optimization experiments were conducted with the Box–Behnken Design approach (BBD) in order to emphasise the interactions among the parameters. The adsorption efficiency was used as the response variable in the development of a 2^nd–order quadratic equation, and the proposed model's feasibility was assessed using an ANOVA test. Several adsorption isotherm and kinetic models were analysed and the most appropriate model to define the adsorption mechanism and the rate–limiting steps were determined.

六价铬 [Cr(VI)] 是一种有毒重金属，对健康危害显著。因此，必须采用适当的修复方法将其从受污染的水中去除。因此，本研究尝试分别在 25̊ ℃、60̊ ℃ 和 90̊ ℃ 的不同温度下合成氧化铁纳米颗粒，并大幅提高其吸附效率和吸附容量。首先，采用共沉淀法合成了氧化铁纳米粒子，并通过多种表征方法对其表面形貌、尺寸、化学成分和磁性能进行了研究。然后，在批量平衡研究中将氧化铁纳米粒子用作吸附剂，以有效去除六价铬。为了确定这些参数对吸附过程的影响，对包括用量和接触时间在内的一系列参数进行了研究。使用在 25 ℃（室温）、60 ℃ 和 90 ℃ 下合成的氧化铁纳米粒子，当六价铬含量为 10 mg/L 时，记录到的最佳去除率分别为 81.78%、82.29% 和 83.82%。随后采用方框-贝肯设计法（BBD）进行了优化实验，以强调各参数之间的相互作用。在建立二阶二次方程时，将吸附效率作为响应变量，并使用方差分析测试评估了所提模型的可行性。对几个吸附等温线和动力学模型进行了分析，并确定了最合适的模型来定义吸附机制和限速步骤。

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引用次数: 0

Flexible dry electrocardiography electrodes obtained from waste face masks, PEDOT:PSS, and biosynthetic polymers

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-25 DOI: 10.1016/j.surfin.2025.106108

Chun-Chieh Huang , Min-Hsuan Lee

During the COVID-19 pandemic, the pollution of non-biodegradable medical face masks has caused long-term adverse effects on the marine environment (e.g., rivers, lakes, and oceans) and wildlife health. Converting these face mask wastes into value-added products is crucial in building a low-carbon society. Besides, dry and flexible electrodes are attractive for long-term electrocardiography (ECG) monitoring applications (e.g., early detection of cardiovascular disorders) due to their skin comfort, biocompatibility, and conductive gel-free operation. The study proposes a cost-effective, green, and facile approach for reusing pure polypropylene (PP) plastic substrate from a disposable mask. The PP was coated with poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate (PEDOT:PSS)-based composite solution, resulting in a mechanically flexible composite with high electrical conductivity for real-time biopotential monitoring applications. The PP-based ECG electrode demonstrates impressive electrical performance, reaching a surface resistance of 2.2 Ω/sq, indicating its strong potential for continuous and constant ECG signal detection. Furthermore, the PP-based ECG electrodes' surface properties and chemical compositions were characterized using SEM, EDX, and FTIR. This intelligent strategy provides a feasible idea for simultaneously addressing the critical challenges in human society, e.g., medical plastic wastes and health monitoring devices, which could support the Sustainable Development Goals (e.g., good health and well-being and life below water).

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引用次数: 0

Amine-enriched polymeric organic frameworks for enhanced energy harvesting and self-powered pH sensing performance

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-02-25 DOI: 10.1016/j.surfin.2025.106112

Jagannath Panda , Sugato Hajra , Swati Panda , Young Je Kwon , Kushal Ruthvik Kaja , Ho Jin Jung , Gyeong Min Choi , Hoe Joon Kim , Kie Yong Cho

Measuring pH is crucial across various domains, including environmental science, healthcare, and food packaging. While conventional pH sensors are highly sensitive, they are often limited by challenges such as limited battery life and slower response rates. An innovative solution lies in triboelectric nanogenerator (TENG) technology, which offers a sustainable, battery-free approach to pH detection. By harnessing mechanical energy and converting it into electrical energy, TENGs enable the development of self-powered sensors suitable for environmental applications. In this context, A nitrogen-rich polymer organic framework (POF) was synthesized based on porphine using pyrrole and tested its effectiveness in a TENG. The POF particles are used as the positive triboelectric layer and FEP as the negative triboelectric layer in the TENG fabrication process. The resulting POF-based TENG could generate 70 V voltage, 1.2 µA of current, and 5 µW of power. We also demonstrated that the TENG could charge capacitors and power LEDs. The study explored the operational mechanism of the TENG in harsh environmental conditions and how the POF material detects pH changes, confirming its efficiency in pH sensing. The research highlights the synthesis of the POF material, its use as a triboelectric layer, the fabrication process of the TENG, and its performance in energy harvesting and self-powered applications.

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引用次数: 0