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Hybrid surface plasmon effect and SERS characterization in a heterogeneous composite structure of Au nano-array and Ag film

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RESULTS IN PHYSICS 2020年 17卷

作者： Wang, Xiangxian Zhu, Jiankai Wu, Yuan Xu, Yueqi Su, Yingwen Zhang, Liping Qi, Yunping Wen, Xiaolei Yang, Hua Lanzhou Univ Technol Sch Sci Lanzhou 730050 Peoples R China Northwest Normal Univ Coll Phys & Elect Engn Lanzhou 730070 Peoples R China Univ Sci & Technol China Ctr Micro & Nanoscale Res & Fabricat Hefei 230026 Peoples R China

In this paper, we studied the hybrid surface plasmons excited by the heterogeneous composite structure of Au nano-array and Ag film via surface enhanced Raman scattering (SERS). By using the finite difference time domain method, the surface plasmon resonances are adjusted to the excitation wavelength of Raman scattering, and the optimized geometric parameters of the structure with the dual-wavelength excitation characteristic are obtained. Utilizing the structure with above parameters which fabricated by electron beam lithography as SERS substrate, the Raman spectra at two excitation wavelengths were gained. The experimental results demonstrate that the heterogeneous composite structure can simultaneously excite two different types of surface plasmons. This work can provide a good reference for the future design of nano-devices based on surface plasmon.

关键词： Surface plasmon Composite structure nano-array SRES

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Construction of nano-architected MnCO3 with enhanced pseudocapacitive performance toward ultrafast supercapacitor

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MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS 2025年 315卷

作者： Chen, Ping Ma, Jigao Wang, Fangzhiyi Zhao, Hongying Li, Lin Shen, Hailong Xu, Jiaheng Wu, Jinyu Liang, Xianqing Zhou, Wenzheng Huang, Haifu Guangxi Univ Carbon Peak & Neutral Sci & Technol Dev Inst Guangxi Novel Battery Mat Res Ctr Engn Technol Sch Phys Sci & TechnolGuangxi Key Lab Electrochem Nanning 530004 Peoples R China

MnCO3 is an exceptional electrode material for supercapacitors, yet it encounters challenges such as inadequate cycle stability and poor conductivity. In this study, MnCO3 cube arrays have been successfully synthesized onto Ni foam via a hydrothermal method. These ultra-fine cube-shaped MnCO3 nanoparticles form porous arrays, essential for controlling volume expansion during charging/discharging. An optimized surface boosts active sites, significantly enhancing performance. The MnCO3 electrode demonstrates remarkable pseudocapacitive characteristics, exhibiting a specific capacitance of up to 370 F g- 1. Furthermore, the electrode displays exceptional cycle stability, with no significant capacitance decay observed even after 5000 consecutive charge-discharge cycles, further confirming its reliability for practical applications. Additionally, the assembled symmetric MnCO3//MnCO3 supercapacitor device achieves an energy density of 11 Wh kg- 1. This study offers a valuable reference for the development of pseudocapacitive materials.

关键词： Supercapacitors MnCO 3 material Pseudocapacitance nano-array Energy storage

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Study of nano-scaffold on improving gettering performance of Ti-Zr-V film and the influencing mechanism

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MATERIALS TODAY COMMUNICATIONS 2024年 39卷

作者： Cao, Qing Li, Yulong Wang, Xianyi Wang, Xudi Zhang, Jun Wu, Jun Wang, Sihui Hefei Univ Technol Sch Mech Engn Hefei 230009 Peoples R China Univ Sci & Technol China Natl Synchrotron Radiat Lab Hefei 230029 Peoples R China Zhejiang Jinggong Technol Co Ltd Shaoxing 312030 Peoples R China

In order to enhance the adsorption performance, a novel three-dimensional (3D) Ti-Zr-V thin film getter was developed by depositing Ti-Zr-V film on ZnO nanorod and nanotube arrays prepared through electrochemical deposition and chemical etching methods respectively. The composition, morphology, and adsorption performance of the 3D Ti-Zr-V thin film getter were investigated using energy dispersive spectroscopy, scanning electron microscopy, and hydrogen adsorption performance test. Compared with the two-dimensional planar TiZr-V film, the 3D Ti-Zr-V film deposited on ZnO nanoarray exhibited significantly improved sorption rates (increased by 109.38 % for ZnO nanorod array and 212.50 % for ZnO nanotube array) as well as increased sorption capacities (enhanced by 89.93 % for ZnO nanorod array and 174.82 % for ZnO nanotube array). The enhanced adsorption performance can be attributed to both surface adsorption and gas diffusion in the nanoporous structures of the novel 3D Ti-Zr-V thin film getter.

关键词： Adsorption performance nano-array Ti -Zr -V getter Surface adsorption Gas diffusion

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Preparation and Performance Study of ZnO nanorod array with Anti-Ultraviolet and Superhydrophobic Surface

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nano 2023年第9期18卷

作者： Chen, Menglong Hua, Jianglong Jiang, Qi South China Univ Technol Chem & Chem Engn Sch Guangzhou 510641 Peoples R China

A two-step low-temperature hydrothermal method was used to construct an aluminum-nickel compound network structure on the substrate surface, followed by a secondary hydrothermal synthesis of ZnO nanorod array. After low surface energy material modification, a superhydrophobic and superoleophobic surface was obtained. The aluminum-nickel compound network structure plays a key guiding role in the growth of ZnO nanorod arrays. The uniformly shaped and densely arranged ZnO nanorod arrays have high roughness and exhibit excellent hydrophobic properties after modification. The surface of the ZnO nanorod array is improved in terms of UV resistance due to the size effect. The effects of hydrothermal reaction temperature, hydrothermal reaction time, hydrothermal reaction pH value, and Zn2+ concentration on the surface structure, morphology, and properties of the ZnO nanorod array were also studied.

关键词： Hydrothermal ZnO nano-array hydrophobic UV resistance

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Au-Pt-Pd spherically self-assembled nano-sieves as SERS sensors

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JOURNAL OF ALLOYS AND COMPOUNDS 2020年 843卷 155885-155885页

作者： Chang, Fang-Ching Huang, Jing-Wen Chen, Chun-Hua Natl Chiao Tung Univ Dept Mat Sci & Engn 1001 Ta Hsueh Rd Hsinchu 30010 Taiwan

A series of unique granular and petaloid Au-capped Pt-Pd spherically-assembled nano-sieves (Au-PP SANSs) - with diameters smaller than 100 nm, combining quasi-regularly integrated surface-enhanced Raman scattering (SERS) active nanocrystals and a functional amphiphilic organic frame - have been successfully synthesized through a facile chemical route with a temperature-sensitive triblock copolymer soft template. Further, it has been demonstrated that they are potential candidates for developing highly-selective molecule-sieve assisted SERS sensors. The combination of the superposed inorganic and organic dual-core shell structures in Au-PP SANSs acts as a molecular sieve, which plays a crucial role in the promising chemical selectivity, which helps distinguish polar malachite green oxalate salt and non-polar thiabendazole molecules. (C) 2020 Elsevier B.V. All rights reserved.

关键词： Self-assembling Tri-block-copolymer Sensor nano-array SERS

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A novel immobilized Z-scheme P3HT/α-Fe2O3 photocatalyst array: Study on the excellent photocatalytic performance and photocatalytic mechanism

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JOURNAL OF HAZARDOUS MATERIALS 2020年第0期389卷 122119-000页

作者： Zhu, Hongjie Chen, Zhihao Hu, Youyou Gong, Lingxuan Li, Dandan Li, Zhengkui Nanjing Univ State Key Lab Pollut Control & Resource Reuse Nanjing 210023 Peoples R China Nanjing Univ Sch Environm Nanjing 210023 Jiangsu Peoples R China

The Z-scheme photocatalyst is valuable for use in polluted water purification. To improve the practical application value of the Z-scheme, in this study, a nano alpha-Fe2O3 and P3HT composite photocatalyst array was synthesized by electrophoretic deposition for the first time. This material was named F1P. The EPR, VBXPS and in situ illumination XPS analyses indicated that the charge transfer path of F1P conforms to the Z-scheme, and F1P array has a high light energy conversion efficiency. Due to the advantages of the Z-scheme system and the good light harvesting ability, F1P exhibited a good degradation effect on different types of pollutants under visible light irradiation. The degradation efficiency of tetracycline and bisphenol A by F1P can reach 97 % and 99 %, respectively. Moreover, F1P showed a certain resistance to water quality changes. After four cycles, F1P can maintain the structural stability and good pollutant treatment effect. Due to the high redox ability of F1P, the complex structure of pollutants can be destroyed and the degradation path of pollutants in F1P system was also analyzed. This study provides a new way of synthesizing Z-scheme systems and immobilizing Z-scheme photocatalysts. F1P is a new material with high practicability.

关键词： nano-array Z-scheme mechanism Immobilized photocatalyst Theoretical calculation Degradation pathway

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Plasmonic nano-arrays for ultrasensitive bio-sensing

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nanoPHOTONICS 2018年第9期7卷 1517-1531页

作者： Jiang, Jing Wang, Xinhao Li, Shuang Ding, Fei Li, Nantao Meng, Shaoyu Li, Ruifan Qi, Jia Liu, Qingjun Liu, Gang Logan LifeFoundry Inc Champaign IL 61820 USA Univ Illinois Dept Elect & Comp Engn Urbana IL 61801 USA Zhejiang Univ Dept Biomed Engn Biosensor Natl Special Lab Key Lab Biomed EngnEduc Minist Hangzhou 310027 Zhejiang Peoples R China Univ Southern Denmark Ctr Nano Opt Campusvej 55 DK-5230 Odense Denmark

Surface plasmon resonance (SPR) and localized SPR (LSPR) effects have been shown as the principles of some highlysensitive sensors in recent decades. Due to the advances in nano-fabrication technology, the plasmon nano-array sensors based on SPR and LSPR phenomena have been widely used in chemical and bioloical analysis. Sensing with surface-enhanced field and sensing for refractive index changes are able to identify the analytes quantitatively and qualitatively. With the newly developed ultrasensitive plasmonic biosensors, platforms with excellent performance have been built for various biomedical applications, including point-of-care diagnosis and personalized medicine. In addition, flexible integration of plasmonics nano-arrays and combining them with electrochemical sensing have significantly enlarged the application scenarios of the plasmonic nano-array sensors, as well as improved the sensing accuracy.

关键词： LSPR nano-array plasmonics sensing SPR

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A review of 2D and 3D plasmonic nanostructure array patterns: fabrication, light management and sensing applications

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nanoPHOTONICS 2019年第12期8卷 2065-2089页

作者： Kasani, Sujan Curtin, Kathrine Wu, Nianqiang West Virginia Univ Dept Mech & Aerosp Engn Morgantown WV 26506 USA West Virginia Univ C Eugene Bennett Dept Chem Morgantown WV 26506 USA West Virginia Univ Dept Pharmaceut Sci Morgantown WV 26506 USA West Virginia Univ Lane Dept Comp Sci & Elect Engn Morgantown WV 26506 USA

This review article discusses progress in surface plasmon resonance (SPR) of two-dimensional (2D) and three-dimensional (3D) chip-based nanostructure array patterns. Recent advancements in fabrication techniques for nano-arrays have endowed researchers with tools to explore a material's plasmonic optical properties. In this review, fabrication techniques including electron-beam lithography, focused-ion lithography, dip-pen lithography, laser interference lithography, nanosphere lithography, nanoimprint lithography, and anodic aluminum oxide (AAO) template-based lithography are introduced and discussed. nano-arrays have gained increased attention because of their optical property dependency (lightmatter interactions) on size, shape, and periodicity. In particular, nano-array architectures can be tailored to produce and tune plasmonic modes such as localized surface plasmon resonance (LSPR), surface plasmon polariton (SPP), extraordinary transmission, surface lattice resonance (SLR), Fano resonance, plasmonic whispering-gallery modes (WGMs), and plasmonic gap mode. Thus, light management (absorption, scattering, transmission, and guided wave propagation), as well as electromagnetic (EM) field enhancement, can be controlled by rational design and fabrication of plasmonic nano-arrays. Because of their optical properties, these plasmonic modes can be utilized for designing plasmonic sensors and surface-enhanced Raman scattering (SERS) sensors.

关键词： plasmon nanostructures nano-array lithography nanofabrication sensor surface-enhanced Raman scattering (SERS)

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Preparation and properties of ZnO@ZnS nano-array core-shell structure with different concentration of TAA

Preparation and properties of ZnO@ZnS nano-array core-shell ...

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3rd International Conference on Advances in Materials Manufacturing (ICAMMP 2012)

作者： Yuan, Andong Zhang, Yuelu Yang, Weiguang Li, Jirong Liao, Yang Shi, Weimin Wang, Linjun Shanghai Univ Sch Mat Sci & Engn Dept Elect Informat Mat Shanghai 200072 Peoples R China

ISBN: (纸本)9783037856208

ZnO@ZnS nano-array core-shell structure was synthesized through a solution method using a thioacetamide (TAA) solution in deionized water. The as-synthesized ZnO nano-array and TAA solution were employed to supply zinc and sulfur ions to form the ZnO@ZnS core-shell structures. The properties of the structure were characterized by X-ray diffraction (XRD), Raman spectrum, scanning electron microscopy (SEM) and UV-Vis spectra. The results indicate that ZnO nano-array was coated with ZnS particles. The concentration of TAA solution can affect the diameter, surface roughness and optical properties of the ZnO@ZnS nano-array core-shell structures.

关键词： ZnO@ZnS nano-array core-shell structure TAA

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The precise preparation of anodic aluminum oxide template based on the current-controlled method

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FERROELECTRICS 2018年第1期523卷 50-60页

作者： Yang, Fengnan Huang, Lu Guo, Tao Wang, Changzheng Wang, Liyan Zhang, Pengxiang Beijing Univ Civil Engn & Architecture Beijing Key Lab Funct Mat Bldg Struct & Environm Beijing Peoples R China Liupanshui Normal Univ Liupanshui Peoples R China Tianjin Univ Technol Sch Sci Tianjin Peoples R China Kunming Univ Sci & Technol Inst Adv Mat Photoelect Kunming Yunnan Peoples R China

Anodic aluminum oxide template has a unique advantage in the preparation of nanostructure of array structure. The pore size and film thickness can be controlled by changing the electrolyte, voltage and temperature in the synthesis process. In this article, through the analysis of current production curve in the process of comparison of the anodic alumina template system and realize the current common microscope to control and monitor the size of the template. The relationship between current and voltage and pore size is studied, so as to realize the precise preparation of anodic aluminum oxide template based on current-controlled method.

关键词： nano-array anodic aluminum oxide template current-controlled and precise synthesis

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