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Crystal plane regulation and heterostructure construction of ZnIn2S4/h-BN for boosting photocatalytic hydrogen evolution
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-19 DOI: 10.1016/j.apsusc.2025.163017
Ping Zou , Zewen Wu , Shenggui Ma , Guangmei Cao , Xia Jiang , Hualin Wang
Visible light photocatalytic decomposition of water to form hydrogen provides a green and safe production method for clean energy, in which high activity and stability of heterocatalysts are high demand. In this paper, we report an inorganic anion regulation strategy to tune different exposed crystal planes of hexagonal ZnIn2S4, while modifying them with h-BN cocatalyst to form van der Waals heterojunction (vdWH) and reduce the photocorrosion, thereby boosting the photocatalytic hydrogen evolution activity. Consequently, ZnIn2S4(102)-20BN (ZIS-20BN) photocatalysts showed a remarkable photocatalytic H2 production performance of 3.61 mmol/gcat/h with a 10 W LED as the light source, 1.64 times higher than that of ZnIn2S4(102) (ZIS-(102)). Moreover, characterization and density functional theory calculations demonstrated that ZIS-(102) exhibited the lowest work function and the introduction of an appropriate amount of h-BN induced the formation of the van der Waals heterostructure, which are conducive to the improvement of the photocatalytic hydrogen evolution activity and stability. Therefore, this study provides a new feasible option for the rational design of heterojunction photocatalysts utilizing specific crystal planes and non-noble metal cocatalysts to achieve efficient photocatalytic production of hydrogen.
{"title":"Crystal plane regulation and heterostructure construction of ZnIn2S4/h-BN for boosting photocatalytic hydrogen evolution","authors":"Ping Zou ,&nbsp;Zewen Wu ,&nbsp;Shenggui Ma ,&nbsp;Guangmei Cao ,&nbsp;Xia Jiang ,&nbsp;Hualin Wang","doi":"10.1016/j.apsusc.2025.163017","DOIUrl":"10.1016/j.apsusc.2025.163017","url":null,"abstract":"<div><div>Visible light photocatalytic decomposition of water to form hydrogen provides a green and safe production method for clean energy, in which high activity and stability of heterocatalysts are high demand. In this paper, we report an inorganic anion regulation strategy to tune different exposed crystal planes of hexagonal ZnIn<sub>2</sub>S<sub>4</sub>, while modifying them with h-BN cocatalyst to form van der Waals heterojunction (vdWH) and reduce the photocorrosion, thereby boosting the photocatalytic hydrogen evolution activity. Consequently, ZnIn<sub>2</sub>S<sub>4</sub>(102)-20BN (ZIS-20BN) photocatalysts showed a remarkable photocatalytic H<sub>2</sub> production performance of 3.61 mmol/g<sub>cat</sub>/h with a 10 W LED as the light source, 1.64 times higher than that of ZnIn<sub>2</sub>S<sub>4</sub>(102) (ZIS-(102)). Moreover, characterization and density functional theory calculations demonstrated that ZIS-(102) exhibited the lowest work function and the introduction of an appropriate amount of h-BN induced the formation of the van der Waals heterostructure, which are conducive to the improvement of the photocatalytic hydrogen evolution activity and stability. Therefore, this study provides a new feasible option for the rational design of heterojunction photocatalysts utilizing specific crystal planes and non-noble metal cocatalysts to achieve efficient photocatalytic production of hydrogen.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"697 ","pages":"Article 163017"},"PeriodicalIF":6.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143660922","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 sensitive non-enzymatic electrochemical sensor for uric acid detection using copper oxide nanopebbles-modified glassy carbon electrode
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-19 DOI: 10.1016/j.apsusc.2025.162956
Arun Kumar Gunasekaran , Noel Nesakumar , Balu Mahendran Gunasekaran , Arockia Jayalatha Kulandaisamy , John Bosco Balaguru Rayappan
A highly sensitive mediator-dependent electrochemical non-enzymatic biosensor for uric acid sensing was developed using copper oxide nanopebbles as an effective electrochemical sensing platform. For this purpose, CuO nanopebbles were prepared using a simple wet chemical route and employed to fabricate CuO-modified glass carbon (GC) electrode with chitosan as a binder to form GC/CuO/Chitosan. The electrochemical oxidation and reduction of uric acid at the electrode–electrolyte interface were facilitated by the electrocatalytic behaviour of CuO nanopebbles. Upon employing differential pulse voltammetry, the fabricated electrode detected uric acid over a broad linear range of 0.1–1.2 mM with a high sensitivity of 0.020 µA µM−1 and a low limit of detection of 28.2 nM. The developed electrode offers high stability over a period of 14 days with good repeatability (1.61 % RSD) and reproducibility (2.27 % RSD). Finally, the fabricated electrode was tested to quantify the spiked uric acid concentrations in synthetic urine samples to analyse the practical ability of the electrode in real-world analysis, and the recovery results (99.4–100.7 %) were satisfactory. Taken together, the fabricated CuO nanopebble-based GC electrode could be used as a promising candidate for sensing and quantifying ultra-low levels of uric acid in urine samples.
{"title":"Highly sensitive non-enzymatic electrochemical sensor for uric acid detection using copper oxide nanopebbles-modified glassy carbon electrode","authors":"Arun Kumar Gunasekaran ,&nbsp;Noel Nesakumar ,&nbsp;Balu Mahendran Gunasekaran ,&nbsp;Arockia Jayalatha Kulandaisamy ,&nbsp;John Bosco Balaguru Rayappan","doi":"10.1016/j.apsusc.2025.162956","DOIUrl":"10.1016/j.apsusc.2025.162956","url":null,"abstract":"<div><div>A highly sensitive mediator-dependent electrochemical non-enzymatic biosensor for uric acid sensing was developed using copper oxide nanopebbles as an effective electrochemical sensing platform. For this purpose, CuO nanopebbles were prepared using a simple wet chemical route and employed to fabricate CuO-modified glass carbon (GC) electrode with chitosan as a binder to form GC/CuO/Chitosan. The electrochemical oxidation and reduction of uric acid at the electrode–electrolyte interface were facilitated by the electrocatalytic behaviour of CuO nanopebbles. Upon employing differential pulse voltammetry, the fabricated electrode detected uric acid over a broad linear range of 0.1–1.2 mM with a high sensitivity of 0.020 µA µM<sup>−1</sup> and a low limit of detection of 28.2 nM. The developed electrode offers high stability over a period of 14 days with good repeatability (1.61 % RSD) and reproducibility (2.27 % RSD). Finally, the fabricated electrode was tested to quantify the spiked uric acid concentrations in synthetic urine samples to analyse the practical ability of the electrode in real-world analysis, and the recovery results (99.4–100.7 %) were satisfactory. Taken together, the fabricated CuO nanopebble-based GC electrode could be used as a promising candidate for sensing and quantifying ultra-low levels of uric acid in urine samples.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"697 ","pages":"Article 162956"},"PeriodicalIF":6.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143660524","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 Z-scheme hetero-structure Co-doped BiFeO3/BiVO4 film photoanode for photoelectrochemical water splitting
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-19 DOI: 10.1016/j.apsusc.2025.162961
Xingang Kong, Hao Tian, Xinmiao Yang, Guoyu Ren, Jianfeng Huang, Lixiong Yin, Hao Zhang
The Co-doped BiFeO3/BiVO4 composite photoanode was successfully synthesized via the sol–gel method. The surface work function of BiFeO3 was modified by doping Co3+ ions, resulting in the formation of a Z-scheme Co-BiFeO3/BiVO4 hetero-structure. In this hetero-structure, the photogenerated carriers were not only able to effectively separated, but also the high oxidation capacity of BiVO4 and the high reduction of Co-BiFeO3 retained. And the direction of the spatial electric field on the BiVO4 surface aligned with the electric field on the Co-BiFeO3/BiVO4 interface, which enhanced the separation of photogenerated carriers and promoted the photogenerated hole migration forward the surface of photoanode. As a result, the Z-scheme Co-BiFeO3/BiVO4 composite photoanode exhibited strong photoelectrochemical performance compared with BiFeO3/BiVO4 composite photoanode.
{"title":"Preparation of Z-scheme hetero-structure Co-doped BiFeO3/BiVO4 film photoanode for photoelectrochemical water splitting","authors":"Xingang Kong,&nbsp;Hao Tian,&nbsp;Xinmiao Yang,&nbsp;Guoyu Ren,&nbsp;Jianfeng Huang,&nbsp;Lixiong Yin,&nbsp;Hao Zhang","doi":"10.1016/j.apsusc.2025.162961","DOIUrl":"10.1016/j.apsusc.2025.162961","url":null,"abstract":"<div><div>The Co-doped BiFeO<sub>3</sub>/BiVO<sub>4</sub> composite photoanode was successfully synthesized via the sol–gel method. The surface work function of BiFeO<sub>3</sub> was modified by doping Co<sup>3+</sup> ions, resulting in the formation of a Z-scheme Co-BiFeO<sub>3</sub>/BiVO<sub>4</sub> hetero-structure. In this hetero-structure, the photogenerated carriers were not only able to effectively separated, but also the high oxidation capacity of BiVO<sub>4</sub> and the high reduction of Co-BiFeO<sub>3</sub> retained. And the direction of the spatial electric field on the BiVO<sub>4</sub> surface aligned with the electric field on the Co-BiFeO<sub>3</sub>/BiVO<sub>4</sub> interface, which enhanced the separation of photogenerated carriers and promoted the photogenerated hole migration forward the surface of photoanode. As a result, the Z-scheme Co-BiFeO<sub>3</sub>/BiVO<sub>4</sub> composite photoanode exhibited strong photoelectrochemical performance compared with BiFeO<sub>3</sub>/BiVO<sub>4</sub> composite photoanode.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"697 ","pages":"Article 162961"},"PeriodicalIF":6.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143660525","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
Application of dual inhibitor-loaded ZIF-8 decorated montmorillonite nanocomposite toward active corrosion resistance of waterborne epoxy coatings
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-19 DOI: 10.1016/j.apsusc.2025.163021
Chen Wang , Chenyang Zhao , Yue Li , Wenlin Yuan , Yi Huang , Di Cheng , Tao Shen , Ji Zhang , Jie Liu , Libei Jiang , Chao Yang , Qianhong Shen , Hui Yang
Impregnation of multiple corrosion inhibitors within stimuli-responsive nanocontainers significantly enhances the active corrosion protection capabilities of anticorrosion coatings, thus extending their service life. This study introduces a novel nanocontainer, BTA-ZIF-8@Ce-MMT, for the active corrosion protection of carbon steel. In this design, zeolitic imidazolate frameworks (ZIF-8) containing 1H-benzotriazole are in-situ grown on cerium ion-intercalated montmorillonite. The dual inhibitor-loaded nanocontainers exhibit superior on-demand inhibitor release properties, where the cerium ions and BTA molecules effectively mitigate corrosion reactions at the cathodic and anodic sites, respectively. Potentiodynamic polarization measurements demonstrated that addition of 1 g/L of BTA-ZIF-8@Ce-MMT reduced the corrosion current density (icorr) of Q235 carbon steel immersed in 3.5 wt% NaCl solution from 3.389 to 1.132 μA·cm−2, resulting in a maximum inhibition efficiency of 67.6 %. Electrochemical impedance spectroscopy (EIS) analysis of the bare carbon steel surface further indicated that dual inhibitor system provided synergistic corrosion inhibition and enhanced interfacial corrosion resistance (Rct). When incorporated into a waterborne epoxy matrix, BTA-ZIF-8@Ce-MMT nanocontainers significantly improved the anticorrosive stability of the coatings. After 28 d of immersion in a saline solution, the impedance modulus of the coating at 0.01 Hz (|Z|0.01 Hz) remains at 5.12 × 109 Ω cm2, nearly two orders of magnitude higher than that of the pure epoxy coating. Additionally, the adhesion strength of the coating declined by only 50.8 % after two weeks of salt spray test. This enhanced performance is contributed by the synergistic effects of montmorillonite, cerium ions, and 1H-benzotriazole (BTA) molecules. Together, these components establish a robust anticorrosion mechanism, which includes an extended diffusion pathway for corrosive media via the flake-structured MMT, the formation of protective cerium hydroxide or cerium oxide films, and acid-responsive BTA release from the ZIF-8 frameworks. This study for the first time introduces a dual-inhibitor strategy for modifying montmorillonite with functional MOF structures, offering a promising approach to improving the corrosion protection of epoxy coatings on Q235 mild steel.
{"title":"Application of dual inhibitor-loaded ZIF-8 decorated montmorillonite nanocomposite toward active corrosion resistance of waterborne epoxy coatings","authors":"Chen Wang ,&nbsp;Chenyang Zhao ,&nbsp;Yue Li ,&nbsp;Wenlin Yuan ,&nbsp;Yi Huang ,&nbsp;Di Cheng ,&nbsp;Tao Shen ,&nbsp;Ji Zhang ,&nbsp;Jie Liu ,&nbsp;Libei Jiang ,&nbsp;Chao Yang ,&nbsp;Qianhong Shen ,&nbsp;Hui Yang","doi":"10.1016/j.apsusc.2025.163021","DOIUrl":"10.1016/j.apsusc.2025.163021","url":null,"abstract":"<div><div>Impregnation of multiple corrosion inhibitors within stimuli-responsive nanocontainers significantly enhances the active corrosion protection capabilities of anticorrosion coatings, thus extending their service life. This study introduces a novel nanocontainer, BTA-ZIF-8@Ce-MMT, for the active corrosion protection of carbon steel. In this design, zeolitic imidazolate frameworks (ZIF-8) containing 1H-benzotriazole are in-situ grown on cerium ion-intercalated montmorillonite. The dual inhibitor-loaded nanocontainers exhibit superior on-demand inhibitor release properties, where the cerium ions and BTA molecules effectively mitigate corrosion reactions at the cathodic and anodic sites, respectively. Potentiodynamic polarization measurements demonstrated that addition of 1 g/L of BTA-ZIF-8@Ce-MMT reduced the corrosion current density (i<sub>corr</sub>) of Q235 carbon steel immersed in 3.5 wt% NaCl solution from 3.389 to 1.132 μA·cm<sup>−2</sup>, resulting in a maximum inhibition efficiency of 67.6 %. Electrochemical impedance spectroscopy (EIS) analysis of the bare carbon steel surface further indicated that dual inhibitor system provided synergistic corrosion inhibition and enhanced interfacial corrosion resistance (R<sub>ct</sub>). When incorporated into a waterborne epoxy matrix, BTA-ZIF-8@Ce-MMT nanocontainers significantly improved the anticorrosive stability of the coatings. After 28 d of immersion in a saline solution, the impedance modulus of the coating at 0.01 Hz (|Z|<sub>0.01 Hz</sub>) remains at 5.12 × 10<sup>9</sup> Ω cm<sup>2</sup>, nearly two orders of magnitude higher than that of the pure epoxy coating. Additionally, the adhesion strength of the coating declined by only 50.8 % after two weeks of salt spray test. This enhanced performance is contributed by the synergistic effects of montmorillonite, cerium ions, and 1H-benzotriazole (BTA) molecules. Together, these components establish a robust anticorrosion mechanism, which includes an extended diffusion pathway for corrosive media via the flake-structured MMT, the formation of protective cerium hydroxide or cerium oxide films, and acid-responsive BTA release from the ZIF-8 frameworks. This study for the first time introduces a dual-inhibitor strategy for modifying montmorillonite with functional MOF structures, offering a promising approach to improving the corrosion protection of epoxy coatings on Q235 mild steel.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"697 ","pages":"Article 163021"},"PeriodicalIF":6.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653726","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
Designing TiO2@FexOy magnetic core–shell catalyst with 3D flower-like surface morphology preservation for enhanced photocatalytic performance
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-18 DOI: 10.1016/j.apsusc.2025.163003
Daniel Ghercă , Tiberiu Roman , Dana-Georgeta Popescu , Adrian-Iulian Borhan , Daniel-Dumitru Herea , George Stoian , Horia Chiriac , Gabriel Ababei , Nicoleta Lupu
A synthetic rational design of core–shell magnetic nanomaterials has garnered significant attention for their potential in photocatalysis and adsorption applications. This study presents the synthesis and characterization of a TiO2-based core–shell photocatalyst functionalized with FexOy co-catalyst for the efficient adsorption and degradation of synthetic methylene blue dye. The chemical synthesis technique involved a three-step process consisting in the preparation of TiO2 nanoparticles followed by surface nanocompartmentalization with a ferrihydrite layer exhibiting a flower-like morphology and lastly the calcination of the resulting composite at 400 °C to produce a magnetic core–shell nanomaterial. Comprehensive physicochemical characterization was performed using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and ultra-high-resolution transmission electron microscopy (UHR-TEM) to elucidate the structural and morphological properties of the synthesized materials. Photodegradation experiments were conducted under both UV and Visible light irradiation using methylene blue as a model contaminant. The results revealed remarkable photocatalytic performance, with nearly instantaneous adsorption of the dye onto the catalyst surface, followed by efficient photodegradation. Detailed investigations confirmed that the adsorption process occurred at an exceptionally rapid rate, which was attributed to the unique surface functionalization and nanocompartmentalized structure of the core–shell material.
{"title":"Designing TiO2@FexOy magnetic core–shell catalyst with 3D flower-like surface morphology preservation for enhanced photocatalytic performance","authors":"Daniel Ghercă ,&nbsp;Tiberiu Roman ,&nbsp;Dana-Georgeta Popescu ,&nbsp;Adrian-Iulian Borhan ,&nbsp;Daniel-Dumitru Herea ,&nbsp;George Stoian ,&nbsp;Horia Chiriac ,&nbsp;Gabriel Ababei ,&nbsp;Nicoleta Lupu","doi":"10.1016/j.apsusc.2025.163003","DOIUrl":"10.1016/j.apsusc.2025.163003","url":null,"abstract":"<div><div>A synthetic rational design of core–shell magnetic nanomaterials has garnered significant attention for their potential in photocatalysis and adsorption applications. This study presents the synthesis and characterization of a TiO<sub>2</sub>-based core–shell photocatalyst functionalized with Fe<sub>x</sub>O<sub>y</sub> co-catalyst for the efficient adsorption and degradation of synthetic methylene blue dye. The chemical synthesis technique involved a three-step process consisting in the preparation of TiO<sub>2</sub> nanoparticles followed by surface nanocompartmentalization with a ferrihydrite layer exhibiting a flower-like morphology and lastly the calcination of the resulting composite at 400 °C to produce a magnetic core–shell nanomaterial. Comprehensive physicochemical characterization was performed using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and ultra-high-resolution transmission electron microscopy (UHR-TEM) to elucidate the structural and morphological properties of the synthesized materials. Photodegradation experiments were conducted under both UV and Visible light irradiation using methylene blue as a model contaminant. The results revealed remarkable photocatalytic performance, with nearly instantaneous adsorption of the dye onto the catalyst surface, followed by efficient photodegradation. Detailed investigations confirmed that the adsorption process occurred at an exceptionally rapid rate, which was attributed to the unique surface functionalization and nanocompartmentalized structure of the core–shell material.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"696 ","pages":"Article 163003"},"PeriodicalIF":6.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly sensitive SERS platform with analyte enrichment for multiplex organic pollutants detection in river water
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-18 DOI: 10.1016/j.apsusc.2025.163016
Ao Wang , Guowei Liu , Yiqiao Zhao , Xiaoxue Tan , A.V. Rogachev , Qianqian Ding , Xiaohong Jiang
Surface-enhanced Raman scattering (SERS) technique is the most promising methods for detecting trace amounts of analytes owing to its high molecular specificity and high sensitivity. Here, we make an integrated SERS platform consisted of plasmonic nanoparticles with high-intensity SERS hotspots and slippery polydimethylsiloxane (PDMS) surfaces. The urchin-like silver nanoparticles (AgNUs) have numerous branched structures and nanogaps, providing intense SERS hotspots. The PDMS surfaces with analyte enrichment was prepared using a simple UV photocatalytic method without catalysts. The optimized SERS platform detects crystal violet molecules at 0.1 pM in ethanol solution, using 5 μL of analyte, with an enhancement factor as high as 1.29 × 1010. Furthermore, it exhibits multiplex detections of trace organic pollutants in river water samples. This study presents versatile SERS sensing platform with analyte enrichment, potential for highly sensitive identification of interest analytes in complex environments.
{"title":"Highly sensitive SERS platform with analyte enrichment for multiplex organic pollutants detection in river water","authors":"Ao Wang ,&nbsp;Guowei Liu ,&nbsp;Yiqiao Zhao ,&nbsp;Xiaoxue Tan ,&nbsp;A.V. Rogachev ,&nbsp;Qianqian Ding ,&nbsp;Xiaohong Jiang","doi":"10.1016/j.apsusc.2025.163016","DOIUrl":"10.1016/j.apsusc.2025.163016","url":null,"abstract":"<div><div>Surface-enhanced Raman scattering (SERS) technique is the most promising methods for detecting trace amounts of analytes owing to its high molecular specificity and high sensitivity. Here, we make an integrated SERS platform consisted of plasmonic nanoparticles with high-intensity SERS hotspots and slippery polydimethylsiloxane (PDMS) surfaces. The urchin-like silver nanoparticles (AgNUs) have numerous branched structures and nanogaps, providing intense SERS hotspots. The PDMS surfaces with analyte enrichment was prepared using a simple UV photocatalytic method without catalysts. The optimized SERS platform detects crystal violet molecules at 0.1 pM in ethanol solution, using 5 μL of analyte, with an enhancement factor as high as 1.29 × 10<sup>10</sup>. Furthermore, it exhibits multiplex detections of trace organic pollutants in river water samples. This study presents versatile SERS sensing platform with analyte enrichment, potential for highly sensitive identification of interest analytes in complex environments.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"697 ","pages":"Article 163016"},"PeriodicalIF":6.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653730","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 hydrogen evolution ability of Ru with regulation of interface electronic structure by WC/W2C heterostructure via ultrafast flash joule heating synthesis
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-18 DOI: 10.1016/j.apsusc.2025.163015
Yongkang Liu , Fulai Qi , Xinqiang Wang , Qian Zhang , Yanxia Liu , Yong Gao , Ke Wang , Wengang Cui , Fan Gao , Zhenglong Li , Yaxiong Yang , Lixian Sun , Jian Chen , Hongge Pan
Regulation of the electronic structure for ruthenium (Ru) based catalysts is critical but challenging to achieve highly active and stable performance at ampere-level current density for proton exchange membrane water electrolysis (PEMWE). In this work, two phase tungsten carbide heterostructure interface (WC/W2C) is constructed to optimize adsorption of hydrogen intermediates (H*) on Ru-based heterostructure catalyst by one-step ultrafast flash joule heating. Experimental and theoretical studies indicate the obvious charge accumulation and migration at the interface region between Ru and WC/W2C heterostructure. The H* adsorption and desorption balanced by tuning the interface electronic structure contributes synergistic effect to the HER activity of Ru-WxC/CC. Accordingly, with a trace amount of Ru, the as-synthesized Ru-WxC/CC exhibits an overpotential of 31 mV at 10 mA cm−2 and 288 mV at 1 A cm−2. Furthermore, the catalyst delivers exceptional stability during at least 500 h of operation at 10 mA cm−2 with negligible degradation for overall water splitting. This work will provide a guidance for regulating interfacial electronic structure of hydrogen evolution catalyst by the design of heterostructure.
{"title":"Enhanced hydrogen evolution ability of Ru with regulation of interface electronic structure by WC/W2C heterostructure via ultrafast flash joule heating synthesis","authors":"Yongkang Liu ,&nbsp;Fulai Qi ,&nbsp;Xinqiang Wang ,&nbsp;Qian Zhang ,&nbsp;Yanxia Liu ,&nbsp;Yong Gao ,&nbsp;Ke Wang ,&nbsp;Wengang Cui ,&nbsp;Fan Gao ,&nbsp;Zhenglong Li ,&nbsp;Yaxiong Yang ,&nbsp;Lixian Sun ,&nbsp;Jian Chen ,&nbsp;Hongge Pan","doi":"10.1016/j.apsusc.2025.163015","DOIUrl":"10.1016/j.apsusc.2025.163015","url":null,"abstract":"<div><div>Regulation of the electronic structure for ruthenium (Ru) based catalysts is critical but challenging to achieve highly active and stable performance at ampere-level current density for proton exchange membrane water electrolysis (PEMWE). In this work, two phase tungsten carbide heterostructure interface (WC/W<sub>2</sub>C) is constructed to optimize adsorption of hydrogen intermediates (H*) on Ru-based heterostructure catalyst by one-step ultrafast flash joule heating. Experimental and theoretical studies indicate the obvious charge accumulation and migration at the interface region between Ru and WC/W<sub>2</sub>C heterostructure. The H* adsorption and desorption balanced by tuning the interface electronic structure contributes synergistic effect to the HER activity of Ru-W<sub>x</sub>C/CC. Accordingly, with a trace amount of Ru, the as-synthesized Ru-W<sub>x</sub>C/CC exhibits an overpotential of 31 mV at 10 mA cm<sup>−2</sup> and 288 mV at 1 A cm<sup>−2</sup>. Furthermore, the catalyst delivers exceptional stability during at least 500 h of operation at 10 mA cm<sup>−2</sup> with negligible degradation for overall water splitting. This work will provide a guidance for regulating interfacial electronic structure of hydrogen evolution catalyst by the design of heterostructure.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"697 ","pages":"Article 163015"},"PeriodicalIF":6.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639975","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
Critical influence of chemical pretreatments on the deposition and effectiveness of Zr-based conversion coating on AA2024-T3 aluminum alloy
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-18 DOI: 10.1016/j.apsusc.2025.163018
Maryam Eslami , Vivek Pachchigar , Mohan Sankaran , Daniel V. Krogstad
The critical role of chemical pretreatments on the deposition and effectiveness of Zr-based conversion coatings to protect high strength aluminum alloy is presented. Several pretreatments were tested, including mechanical grinding, alkaline etching, acid desmutting, and combinations therein. Zr-based conversion coatings were deposited on aluminum (AA2024-T3) from a solution of 0.01 M Zr4+. The corrosion behavior of the pre-treated and coated alloys was examined using potentiodynamic polarization in sodium chloride solution. The results showed that acid desmutting in nitric acid can cause localized corrosion in the form of selective magnesium dealloying and alkaline trenching around the S-Al2CuMg particles that continued during deposition and can compromise the corrosion protection. Alkaline etching in a sodium hydroxide solution removed some of the larger intermetallic particles and increased the deposition rate but resulted in a cracked coating with inadequate adhesion. Desmutting in weak acid did not cause any trenching during the pretreatment and deposition. However, uneven and cracked deposition of the coating on intermetallic particles compromised the corrosion protection. These results show the benefits and limitations of common pretreatments which can lead to the development of improved pretreatment procedures and corrosion protection.
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引用次数: 0
Bimetallic CoNi alloy nanoparticles dispersed uniformly on N-doped mesoporous hollow carbon nanospheres as efficient electrocatalysts for H2O2 production in acidic media 均匀分散在掺杂 N 的介孔空心碳纳米球上的双金属 CoNi 合金纳米粒子作为在酸性介质中产生 H2O2 的高效电催化剂
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-18 DOI: 10.1016/j.apsusc.2025.163002
Tianjiao Xu , Xiaolei Wang , Chenyang Zhao , Xueru Sheng , Nianxing Wang , Yanli Zhao , Jianjun Song , Haixia Liu , Jingui Wang , Haiyuan Jia
The electrocatalytic two electron oxygen reduction reaction (2e- ORR) is a promising approach to produce H2O2 in acidic media. However, the high cost of precious metal-based electrocatalysts and the challenge to prepare single atom catalysts with well-defined periodic structures and large metal mass content hinder their potential industrial application. We report a carbon supported bimetallic alloy nanocatalyst by dispersing CoNi alloy nanoparticles on the surface of nitrogen-doped mesoporous hollow carbon nanospheres (CoNi/N-MHCS). The CoNi/N-MHCS exhibited a superior 2e- ORR performance with an H2O2 selectivity of 81 % and productivity of 6.048 mol gcat1 h−1 in the acidic media. The catalyst also demonstrates an excellent electro-Fenton performance in degrading tetracycline hydrochloride (TCH) as a demonstration of its on-site practicability. Experiments and DFT theoretical calculations demonstrate that the charge redistribution between Co and Ni atoms due to the formation of CoNi alloy nanoparticles may reduce the reaction energy barrier of *OOH into H2O2, promote the reaction kinetics and modulate the adsorption energy of the intermediate *OOH on the CoNi active sites, thus enhancing the 2e- ORR electrocatalytic performance. This work provides new insights into the development of high efficiency carbon supported bimetallic alloy catalysts for electrocatalytic conversion of O2 into H2O2.
{"title":"Bimetallic CoNi alloy nanoparticles dispersed uniformly on N-doped mesoporous hollow carbon nanospheres as efficient electrocatalysts for H2O2 production in acidic media","authors":"Tianjiao Xu ,&nbsp;Xiaolei Wang ,&nbsp;Chenyang Zhao ,&nbsp;Xueru Sheng ,&nbsp;Nianxing Wang ,&nbsp;Yanli Zhao ,&nbsp;Jianjun Song ,&nbsp;Haixia Liu ,&nbsp;Jingui Wang ,&nbsp;Haiyuan Jia","doi":"10.1016/j.apsusc.2025.163002","DOIUrl":"10.1016/j.apsusc.2025.163002","url":null,"abstract":"<div><div>The electrocatalytic two electron oxygen reduction reaction (2e<sup>-</sup> ORR) is a promising approach to produce H<sub>2</sub>O<sub>2</sub> in acidic media. However, the high cost of precious metal-based electrocatalysts and the challenge to prepare single atom catalysts with well-defined periodic structures and large metal mass content hinder their potential industrial application. We report a carbon supported bimetallic alloy nanocatalyst by dispersing CoNi alloy nanoparticles on the surface of nitrogen-doped mesoporous hollow carbon nanospheres (CoNi/N-MHCS). The CoNi/N-MHCS exhibited a superior 2e<sup>-</sup> ORR performance with an H<sub>2</sub>O<sub>2</sub> selectivity of 81 % and productivity of 6.048 mol g<sub>cat</sub><sup>−</sup><sup>1</sup> h<sup>−1</sup> in the acidic media. The catalyst also demonstrates an excellent electro-Fenton performance in degrading tetracycline hydrochloride (TCH) as a demonstration of its on-site practicability. Experiments and DFT theoretical calculations demonstrate that the charge redistribution between Co and Ni atoms due to the formation of CoNi alloy nanoparticles may reduce the reaction energy barrier of *OOH into H<sub>2</sub>O<sub>2</sub>, promote the reaction kinetics and modulate the adsorption energy of the intermediate *OOH on the CoNi active sites, thus enhancing the 2e<sup>-</sup> ORR electrocatalytic performance. This work provides new insights into the development of high efficiency carbon supported bimetallic alloy catalysts for electrocatalytic conversion of O<sub>2</sub> into H<sub>2</sub>O<sub>2</sub>.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"697 ","pages":"Article 163002"},"PeriodicalIF":6.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653728","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
Time-dependent chemical vapor deposition growth of three-dimensional graphene on carbon fiber fabric for efficient electricity harvesting from water evaporation
IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2025-03-18 DOI: 10.1016/j.apsusc.2025.162963
Zihao Zhai , Jieyi Chen , Xiang Li , Bowen Ruan , Qi Liu , Hanyu Yao , Quntao Tang , Yufang Li
Harvesting electricity from natural water evaporation has emerged as a promising alternative to realize the environmental energy conversion directly and sustainably. However, most reported water evaporation-induced electric generators (WEIGs) still involve a tedious preparation process and exhibit a low electric output, which hinders their practical applications. In this study, a facile fabrication of WEIG by depositing three-dimensional (3D) graphene on carbon fiber (CF) fabric by plasma-enhanced chemical vapor deposition (PECVD) was developed. By simply modulating the growth time during PECVD process, the precise control of crystalline quality, chemical bonding, morphology and electrical conductivity of 3D graphene/CF composite fabric was fulfilled. Benefited from the favorable structure with high specific surface area, small nanochannel size and large oxygen content, the 3D graphene/CF composite fabric-based WEIG prepared for 60 min presented a champion output of 0.78 V, 43.36 μA cm−2 and 10.93 μW cm−2, which exceeds those of reported WEIGs. The prominent electrokinetic effect was attributed to the high zeta potential for efficient surface charge generation, the large electron double layer overlap for significant counter ions induction and the good conductivity for facile electrical conduction. This work paves a new alternative way for material construction toward efficient and sustainable electricity harvesting from environment.
{"title":"Time-dependent chemical vapor deposition growth of three-dimensional graphene on carbon fiber fabric for efficient electricity harvesting from water evaporation","authors":"Zihao Zhai ,&nbsp;Jieyi Chen ,&nbsp;Xiang Li ,&nbsp;Bowen Ruan ,&nbsp;Qi Liu ,&nbsp;Hanyu Yao ,&nbsp;Quntao Tang ,&nbsp;Yufang Li","doi":"10.1016/j.apsusc.2025.162963","DOIUrl":"10.1016/j.apsusc.2025.162963","url":null,"abstract":"<div><div>Harvesting electricity from natural water evaporation has emerged as a promising alternative to realize the environmental energy conversion directly and sustainably. However, most reported water evaporation-induced electric generators (WEIGs) still involve a tedious preparation process and exhibit a low electric output, which hinders their practical applications. In this study, a facile fabrication of WEIG by depositing three-dimensional (3D) graphene on carbon fiber (CF) fabric by plasma-enhanced chemical vapor deposition (PECVD) was developed. By simply modulating the growth time during PECVD process, the precise control of crystalline quality, chemical bonding, morphology and electrical conductivity of 3D graphene/CF composite fabric was fulfilled. Benefited from the favorable structure with high specific surface area, small nanochannel size and large oxygen content, the 3D graphene/CF composite fabric-based WEIG prepared for 60 min presented a champion output of 0.78 V, 43.36 μA cm<sup>−2</sup> and 10.93 μW cm<sup>−2</sup>, which exceeds those of reported WEIGs. The prominent electrokinetic effect was attributed to the high zeta potential for efficient surface charge generation, the large electron double layer overlap for significant counter ions induction and the good conductivity for facile electrical conduction. This work paves a new alternative way for material construction toward efficient and sustainable electricity harvesting from environment.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"696 ","pages":"Article 162963"},"PeriodicalIF":6.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644378","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
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Applied Surface Science
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