Surfaces and Interfaces最新文献

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Femtosecond laser-induced plasma-assisted backward deposition of robustly adherent porous carbon films on glass substrates 飞秒激光诱导等离子体辅助在玻璃基底上反向沉积牢固附着的多孔碳薄膜
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-28 DOI: 10.1016/j.surfin.2024.105304
Sheng Peng , Junjie Zou , Tangyang Pu , Heng Wang , Ruonan Wang , Xiaoyu Tian , Sheng Liu , Qiang Cao
{"title":"Femtosecond laser-induced plasma-assisted backward deposition of robustly adherent porous carbon films on glass substrates","authors":"Sheng Peng ,&nbsp;Junjie Zou ,&nbsp;Tangyang Pu ,&nbsp;Heng Wang ,&nbsp;Ruonan Wang ,&nbsp;Xiaoyu Tian ,&nbsp;Sheng Liu ,&nbsp;Qiang Cao","doi":"10.1016/j.surfin.2024.105304","DOIUrl":"10.1016/j.surfin.2024.105304","url":null,"abstract":"<div><div>The simple and rapid production and transfer of high-quality carbon materials are crucial for the flexible and efficient fabrication of carbon-based electronic devices. Recently, a laser-assisted transfer method combining laser-induced carbonization and transfer printing was demonstrated for the one-step preparation and transfer of patterned laser-induced carbon films to transparent substrates. However, this method is limited by insufficient robustness and weak adhesion of the carbon film post-transfer. Herein, we developed a non-contact laser-induced plasma-assisted deposition method to deposit robustly adherent porous carbon films on glass substrates. By well-adjusting the laser parameters and inserting spacers with adjustable thickness, laser-induced plasma ablation replaced direct laser ablation during femtosecond laser scanning of the substrate-polyimide-carrier sandwich structure, resulting in micro-channels with a carbon-glass recast layer instead of easily peelable flakes on the glass substrate. This hierarchical structure significantly enhances the adhesion between the laser-induced carbon film and the glass substrate, ensuring outstanding stability of the deposited carbon film under various adhesion tests. Furthermore, compared to carbon films prepared by the laser-assisted transfer method, the obtained carbon films are hydrophilic, low-resistance, and porous, facilitating the fabrication of energy storage devices. To demonstrate its practical application, a planar carbon-based micro-supercapacitor was fabricated on glass, exhibiting excellent electrochemical and cycling performance.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142551535","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
Elucidating silanol removal in MFI nanosized zeolites through controlled post-synthesis hydrothermal treatments 通过受控合成后水热处理阐明 MFI 纳米沸石中的硅醇去除作用
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-28 DOI: 10.1016/j.surfin.2024.105360
Hugo Cruchade, Francesco Dalena, Eddy Dib, Abdelhafid Aitblal, Diogenes Honorato Piva, Aymeric Magisson, Svetlana Mintova
{"title":"Elucidating silanol removal in MFI nanosized zeolites through controlled post-synthesis hydrothermal treatments","authors":"Hugo Cruchade,&nbsp;Francesco Dalena,&nbsp;Eddy Dib,&nbsp;Abdelhafid Aitblal,&nbsp;Diogenes Honorato Piva,&nbsp;Aymeric Magisson,&nbsp;Svetlana Mintova","doi":"10.1016/j.surfin.2024.105360","DOIUrl":"10.1016/j.surfin.2024.105360","url":null,"abstract":"<div><div>The rational control of silanol groups is still an elusive dream in zeolite synthesis. To enhance our understanding of this phenomenon, we have performed various hydrothermal post-synthesis treatments on nanosized Silicalite-1 using sodium molybdate, sodium chloride, and ultrapure water to evaluate the alteration of silanol content. All treated samples exhibited a phase transition from orthorhombic to monoclinic confirmed by X-ray diffraction (XRD). Fourier-Transform Infrared (FTIR) and solid-state Nuclear Magnetic Resonance (NMR) spectroscopy showed a decrease in the concentration of silanol groups in the post treated samples. The treatment with sodium molybdate leads to the removal of approximately 98% of the silanol groups, while the samples treated with sodium chloride and ultrapure water showed a decrease of 90% and 20% respectively, compared to the parent silicalite-1. Additionally, the results from pyridine adsorption followed by FTIR show that the Parent-Silicalite-1 and the H<sub>2</sub>O-Silicalite-1 samples contain a significant amount of defects, requiring 13.55 and 11.18 μmol, respectively, to saturate all the unsymmetrical bridging sites, while for the sample treated with sodium chloride only 1.07 µmol is needed to saturate all siloxane sites. In contrast, the treatment with sodium molybdate produced a free-defects zeolite. Molybdenum was found to contribute to the removal of both weak and strong hydrogen-bonded silanol groups through its insertion into the zeolite framework, while sodium played a significant role in condensing open bridges within the zeolite framework and removing less weak and strong hydrogen bonded silanol groups. This condensation of silanol groups seems to be facilitated by the polarization of silanol groups in presence of Na<sup>+</sup> promoting the formation of siloxy groups that eventually condense easily with adjacent SiOH groups, liberating water molecules during the activation process of the samples.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594130","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 corrosion behavior and passive film properties of Fe2Ni2CrV0.5Nbx (x=0.2, 0.4, 0.6, 0.8) eutectic high-entropy alloy coating prepared by laser cladding 激光熔覆制备的 Fe2Ni2CrV0.5Nbx (x=0.2, 0.4, 0.6, 0.8) 共晶高熵合金涂层的电化学腐蚀行为和被动膜特性
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-28 DOI: 10.1016/j.surfin.2024.105317
Hao Liu , Yingying Li , Peijian Chen , Xinhua Liu , Jingbin Hao , Haifeng Yang
{"title":"Electrochemical corrosion behavior and passive film properties of Fe2Ni2CrV0.5Nbx (x=0.2, 0.4, 0.6, 0.8) eutectic high-entropy alloy coating prepared by laser cladding","authors":"Hao Liu ,&nbsp;Yingying Li ,&nbsp;Peijian Chen ,&nbsp;Xinhua Liu ,&nbsp;Jingbin Hao ,&nbsp;Haifeng Yang","doi":"10.1016/j.surfin.2024.105317","DOIUrl":"10.1016/j.surfin.2024.105317","url":null,"abstract":"<div><div>The phase composition, microstructure morphology, and corrosion behavior of Fe<sub>2</sub>Ni<sub>2</sub>CrV<sub>0.5</sub>Nb<sub>x</sub> (<em>x</em> = 0.2, 0.4, 0.6, 0.8) eutectic high-entropy alloy (EHEA) coatings produced via laser cladding were investigated. The research delved into discerning the phase structures and microstructural variations of the EHEA coatings concerning differing Nb compositions. The findings highlighted a direct correlation between Nb content and the volume fraction of the eutectic structure, specifically the FCC/Laves phases. Electrochemical evaluations, including diverse tests such as potentiodynamic polarization, electrochemical impedance spectroscopy, cyclic polarization, Mott-Schottky measurements, and X-ray photoelectron spectroscopy, revealed distinct corrosion behaviors among the EHEA variants. Notably, the Fe<sub>2</sub>Ni<sub>2</sub>CrV<sub>0.5</sub>Nb<sub>0.2</sub> coating exhibited relatively superior corrosion resistance compared with Fe<sub>2</sub>Ni<sub>2</sub>CrV<sub>0.5</sub>Nb<sub>x</sub> (<em>x</em> = 0.4,0.6,0.8) coatings, attributed to its lower corrosion current density (I<sub>corr</sub>) and the formation of a thicker passive film with prolonged passivation duration. Conversely, the Fe<sub>2</sub>Ni<sub>2</sub>CrV<sub>0.5</sub>Nb<sub>0.8</sub> coating, characterized by increased eutectic structures and grain boundary density, yielded a thicker yet non-uniform passive film with higher vacancy defects. This comprehensive exploration into the corrosion behavior and passive film properties of these EHEA coatings provides a reference for designing materials that hold promising implications for future corrosion-resistant material development in industrial parts repair applications.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571670","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
Optimizing the resistivity of colloidal SnO2 thin films by ion implantation and annealing 通过离子注入和退火优化二氧化锡胶体薄膜的电阻率
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-28 DOI: 10.1016/j.surfin.2024.105325
Abubakar Sadiq Yusuf , Martin Markwitz , Zhan Chen , Maziar Ramezani , John V. Kennedy , Holger Fiedler
{"title":"Optimizing the resistivity of colloidal SnO2 thin films by ion implantation and annealing","authors":"Abubakar Sadiq Yusuf ,&nbsp;Martin Markwitz ,&nbsp;Zhan Chen ,&nbsp;Maziar Ramezani ,&nbsp;John V. Kennedy ,&nbsp;Holger Fiedler","doi":"10.1016/j.surfin.2024.105325","DOIUrl":"10.1016/j.surfin.2024.105325","url":null,"abstract":"<div><div>Tin oxide (SnO<sub>2</sub>) is a critical material for a wide range of applications, such as in perovskite solar cells, gas sensors, as well as for photocatalysis. For these applications the transparency to visible light, high availability, cheap fabrication process and high conductivity of SnO<sub>2</sub> benefits its commercial deployment. In this paper, we demonstrate that the resistivity of widely colloidal SnO<sub>2</sub> can be reduced by noble gas ion beam modification. After low energy argon implantation with a fluence of 4×10<sup>15</sup> at.cm<sup>−2</sup> at 25keV and annealing at 200°C in air, the resistivity of as-deposited film was reduced from (178±6)μΩcm to (133±5)μΩcm, a reduction of 25%. Hall effect measurements showed that the primary cause of this is the increase in carrier concentration from (8.1±0.3)×10<sup>20</sup> cm<sup>−3</sup> to (9.9±0.3)×10<sup>20</sup> cm<sup>−3</sup>. Annealing at 200°C resulted in the removal of defect clusters introduced by implantation, while annealing at 300°C resulted in the oxidation of the films, increasing their resistivity. The concentration of oxygen vacancy defects can be controlled by a combination of low energy noble gas ion implantation and annealing, providing promising performance increases for potential applications of SnO<sub>2</sub> where a low resistivity is crucial.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571679","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
Tailoring the morphology of poly (triazine imide) by chemical equilibrium towards enhanced photocatalytic overall water splitting 通过化学平衡调整聚(三嗪亚胺)的形态以增强光催化整体水分离能力
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-28 DOI: 10.1016/j.surfin.2024.105321
Jiawen Yu , Jun Zhang , Qin Wang, Wenjie Zhou, Mengdie Cai, Jia-qi Bai, Qin Cheng, Jingshuai Chen, Song Sun
{"title":"Tailoring the morphology of poly (triazine imide) by chemical equilibrium towards enhanced photocatalytic overall water splitting","authors":"Jiawen Yu ,&nbsp;Jun Zhang ,&nbsp;Qin Wang,&nbsp;Wenjie Zhou,&nbsp;Mengdie Cai,&nbsp;Jia-qi Bai,&nbsp;Qin Cheng,&nbsp;Jingshuai Chen,&nbsp;Song Sun","doi":"10.1016/j.surfin.2024.105321","DOIUrl":"10.1016/j.surfin.2024.105321","url":null,"abstract":"<div><div>Poly (triazine imide) generally obtained via ionothermal synthesis typically exhibits nanosheet or hexagonal prism aggregation. This study presents an innovative approach to modulate PTI morphology without the addition of structure-directing agents. By manipulating the volatilization rate of gaseous substances like ammonia, various PTI morphologies were achieved. The results indicate that adjusting chemical equilibrium conditions favors the formation of morphologies with higher surface energy, leading to increased specific surface area and morphological variations. Notably, these changes do not alter the crystal structure, elemental composition or band gap, but significantly impact the dynamics of photogenerated carriers. Additionally, this morphological transformation not only increase the surface active sites but also enhance the interfacial interaction between the cocatalyst and the PTI support. Among the morphologies, rod-like PTI exhibit superior photocatalytic performance, with hydrogen evolution and oxygen evolution of 506.8 μmol h<sup>-1</sup> g<sup>-1</sup> and of 234.0 μmol h<sup>-1</sup> g<sup>-1</sup>, respectively, representing a 15.8-fold increase over the original sample. Furthermore, the manipulation of chemical equilibrium during polymerization offers new insights and potential for advancing crystalline carbon nitride-based photocatalyst.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571364","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
Experimental study and molecular dynamics simulation of Ag/Ti diffusion bonding 银/钛扩散键的实验研究与分子动力学模拟
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-26 DOI: 10.1016/j.surfin.2024.105296
Liuyong Wang , Hao Wang , Qingyi Zou , Yue Li , Min Lei , Wenqin Wang , Yulong Li
{"title":"Experimental study and molecular dynamics simulation of Ag/Ti diffusion bonding","authors":"Liuyong Wang ,&nbsp;Hao Wang ,&nbsp;Qingyi Zou ,&nbsp;Yue Li ,&nbsp;Min Lei ,&nbsp;Wenqin Wang ,&nbsp;Yulong Li","doi":"10.1016/j.surfin.2024.105296","DOIUrl":"10.1016/j.surfin.2024.105296","url":null,"abstract":"<div><div>The diffusion kinetics and mechanisms of Ag/Ti diffusion couple were investigated through experiments and molecular dynamics simulations. The influence of processing parameters, such as temperature (700 °C to 850 °C) and holding time (15 min to 60 min), on microstructure and phase formation at the Ag/Ti joint was studied. In addition, the mechanical properties of the joints were evaluated. IMCs including AgTi, Ti<sub>2</sub>Ag, and the Ti(ss, Ag) solid solution exist at the diffusion interface. The activation energy for the growth of the TiAg phase is 98 kJ/mol. Molecular dynamics simulations show that Ag has a higher diffusion coefficient (5.0×10<sup>-5</sup> m<sup>2</sup>/s) compared to Ti (2.5×10<sup>-8</sup> m<sup>2</sup>/s). Meanwhile, the grains at the TiAg/Ti interface are significantly smaller than those at the TiAg/Ag side. These results indicate that the diffusion flux of Ag is higher than that of Ti, and the TiAg phase priority is formed at the interface. The grain boundary diffusion is a diffusion control mechanism. The Ti(ss, Ag) solid solution at the interface exhibits the highest nano-hardness and modulus, with values of 4.2 ± 0.1 GPa and 139.6 ± 0.6 GPa, respectively. The joint brazed at 750 °C for 30 min shows a maximum shear strength of 98 MPa, with fractures primarily occurring at the interface between the Ag and TiAg phases. This study provides insights into the diffusion behavior, phase formation dynamics, and mechanical properties of Ag/Ti diffusion couples, offering implications for the development of advanced materials in various engineering applications.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571671","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
Novel synergistic mechanism of oxalic acid -CMC at the solid-liquid interface: For selective depression of talc from chalcopyrite 草酸-CMC 在固液界面上的新型协同机制:从黄铜矿中选择性去除滑石
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-25 DOI: 10.1016/j.surfin.2024.105345
Hulin Gao , Jian Liu , Jiamei Hao , Xu Bai , Runpeng Liao
{"title":"Novel synergistic mechanism of oxalic acid -CMC at the solid-liquid interface: For selective depression of talc from chalcopyrite","authors":"Hulin Gao ,&nbsp;Jian Liu ,&nbsp;Jiamei Hao ,&nbsp;Xu Bai ,&nbsp;Runpeng Liao","doi":"10.1016/j.surfin.2024.105345","DOIUrl":"10.1016/j.surfin.2024.105345","url":null,"abstract":"<div><div>Flotation separation of chalcopyrite and talc is challenging due to their surface hydrophobicity, requiring a selective depressant for talc to achieve high-quality copper concentrate. This study is the first to use oxalic acid (OA) and carboxymethyl cellulose (CMC) as combined depressants for talc, and investigated the depression mechanism through flotation tests and various analysis techniques. Mixed minerals-flotation results showed that with 60+60 mg/L OA+CMC, talc was strongly depressed (10.16% recovery) with slight chalcopyrite (86.54% recovery) impact. The selective depression effect of OA+CMC was further verified through actual ore flotation experiments. Contact angle and zeta potential test indicated that OA+CMC significantly increased the hydrophobicity difference between talc and chalcopyrite surfaces. Adsorption capacity and atomic force microscope(AFM) results further confirmed that OA promotes CMC adsorption on talc surface, forming a dense CMC layer, whereas CMC adsorption on chalcopyrite was relatively low. Scanning electron microscope energy spectrum spectroscopy (SEM-EDS), fourier transform infrared spectroscopy(FTIR), and molecular dynamics (MD) results indicate that the synergistic depression mechanism of OA and CMC involves the formation of multiple adsorption layers at the solid-liquid interface, leading to an increased presence of hydrophilic groups on the talc surface, which results in its depression.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552360","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 modification and patterning of polymer thin films by plasma and adsorption behavior of proteins 等离子体对聚合物薄膜的表面改性和图案化以及蛋白质的吸附行为
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-25 DOI: 10.1016/j.surfin.2024.105342
Athul Nakulan , K. Sumithra , S. Sheethal , S. Yuvaraj , P. Peranantham , Y.L. Jeyachandran
{"title":"Surface modification and patterning of polymer thin films by plasma and adsorption behavior of proteins","authors":"Athul Nakulan ,&nbsp;K. Sumithra ,&nbsp;S. Sheethal ,&nbsp;S. Yuvaraj ,&nbsp;P. Peranantham ,&nbsp;Y.L. Jeyachandran","doi":"10.1016/j.surfin.2024.105342","DOIUrl":"10.1016/j.surfin.2024.105342","url":null,"abstract":"<div><div>The surface wettability property of hydrophobic polystyrene (PS) and hydrophilic polyethylene glycol (PEG) thin films subjected to modification by direct current plasma glow discharge is studied. The polymer films exhibited change of surface wettability on exposure to air, nitrogen, oxygen or argon plasmas. In PS films a swift modification to hydrophilic surface and subsequent steady recovery following first order kinetics are observed. The rate of modification and recovery are adjustable by adjusting the plasma ambient and parameters, and additional wet-chemical treatment using ionic solutions. In PEG films the hydrophobic wettability evolve with ageing following the first order kinetics, and is stable for long period on exposure to air ambient. Moreover, a vapor deposition like process is possible using the PEG films as source to deposit self-assembled molecular layers with hydrophobic wettability on other surfaces. Using surface modification or molecular deposition processes, the fabrication of wettability patterns in the surface of PS and PEG films, and on other surfaces by vapor transport using PEG films, and also the possibility to produce gradient wettability patterns are demonstrated. Moreover, the adsorption behavior of immuno-specific system of proteins on surface modified hydrophilic PS films is studied.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552381","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
Constructing a Z-scheme heterojunction of oxygen-deficient WO3-x and g-C3N4 for superior photocatalytic evolution of H2 构建缺氧 WO3-x 和 g-C3N4 的 Z 型异质结,实现卓越的 H2 光催化进化能力
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-25 DOI: 10.1016/j.surfin.2024.105346
Fengyun Su, Mengzhen Tian, Hailong Cao, Zhishuai Wang, Qiang Zhao, Haiquan Xie, Yezhen Zhang, Xiaoli Jin, Xin Li, Zhengdao Li
{"title":"Constructing a Z-scheme heterojunction of oxygen-deficient WO3-x and g-C3N4 for superior photocatalytic evolution of H2","authors":"Fengyun Su,&nbsp;Mengzhen Tian,&nbsp;Hailong Cao,&nbsp;Zhishuai Wang,&nbsp;Qiang Zhao,&nbsp;Haiquan Xie,&nbsp;Yezhen Zhang,&nbsp;Xiaoli Jin,&nbsp;Xin Li,&nbsp;Zhengdao Li","doi":"10.1016/j.surfin.2024.105346","DOIUrl":"10.1016/j.surfin.2024.105346","url":null,"abstract":"<div><div>Semiconductor-based photocatalytic water splitting enables the conversion of abundant solar energy to green and renewable hydrogen energy. Graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is synthesized using a straightforward method, demonstrating stable physicochemical properties and possessing an optimal bandgap, thus positioning it as a promising photocatalyst in the realm of environmental sustainability. Oxygen vacancies are extensively employed to modulate light absorption and surface properties of metal-oxide semiconductors. In this study, g-C<sub>3</sub>N<sub>4</sub> nanosheets were coupled with oxygen-deficient tungsten trioxide (WO<sub>3-x</sub>) to form heterojunction photocatalysts (<em>X</em>-WOCN). Comprehensive material characterization results demonstrated that the constructed heterojunction extended the visible light absorption range, improved photogenerated electron-hole separation efficiency, and thus augmented photocatalytic activity. Notably, the optimum hydrogen evolution rate of 6 %-WOCN was enhanced by 5.4-fold compared to that of g-C<sub>3</sub>N<sub>4</sub>. Furthermore, we propose a Z-scheme heterojunction charge separation mechanism mediated by oxygen defects and support this mechanism through detection of surface-active substances •O<sub>2</sub><sup>−</sup> and •OH. This study offers novel propositions into the function of oxygen defects in facilitating charge separation within Z-scheme heterojunction.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552305","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
Plasma assisted single-step synthesis of carbon-coated SrFe2O4 electrodes for enhancing supercapacitor and oxygen evolution reaction 等离子体辅助单步合成碳涂层 SrFe2O4 电极,用于增强超级电容器和氧进化反应
IF 5.7 2区 材料科学
Surfaces and Interfaces Pub Date : 2024-10-24 DOI: 10.1016/j.surfin.2024.105339
Kumaresan Lakshmanan , Amarnath Pasupathi , Bharani Narayanan , Yugeswaran Subramaniam , Shanmugavelayutham Gurusamy
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