Development of periodic nanostructure substrates for the applications of SERS and water-splitting

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Title:	Development of periodic nanostructure substrates for the applications of SERS and water-splitting
Authors:	阮書嫻;Hien, Nguyen Thi Thai
Contributors:	材料科學與工程研究所
Keywords:	高熵陶瓷(HEC);陽極氧化鋁(AAO);光伏效應;表面增强拉曼散射 (SERS);尖晶石結構電催化;High entropy ceramics (HECs);anodic aluminum oxide (AAO);photoelectrochemical (PEC) and photocatalytic activity;surface-enhanced Raman scattering (SERS);spinel (CoCrFeMnNi)3O4, AuNPs, graphene
Date:	2022-01-25
Issue Date:	2022-07-13 18:42:17 (UTC+8)
Publisher:	國立中央大學
Abstract:	高熵陶瓷（HECs）是一類新發現的材料，除了與高熵合金（HEA）有部分特性相似之外，它們還有非常獨特的特性，因此吸引了各種研究的特征。HEC在許多領域都表現出色各種各樣的應用，具有無窮的可能性與發展潛力。在這項工作中，尖晶石（CoCrFeMnNi）3O4以多孔陽極氧化鋁（AAO）為光陽極，合成了一種新型光催化劑可見光光譜中的大量光吸收，帶隙為2.58 eV。這個研究了HECs AAO光陽極的光響應性能。結果表明，HECs具有顯著的光電化學和光催化性能活動這一發現證明了HECs在各種應用中的多功能性及其應用特別是光催化的前景。此外，石墨烯以前曾用於各種表面增強拉曼光譜散射（SERS）應用。這項研究描述了有序金的形成多孔陽極氧化鋁（AAO）襯底上的納米顆粒（AuNP）和石墨烯。這個AuNPs電磁增強活性與石墨烯獨特性能的結合AAO存在下的物理/化學性質增強了SERS性質並使微量分析調查。將對大量作品進行比較，以說明開發中的每個組件。此外，本研究旨在填補我們研究的空白了解SERS增強機制。;High entropy ceramics (HECs) are a new class of materials that have been discovered recently. Apart from the similarities with high entropy alloys (HEAs), they have very unique characteristics that have attracted various studies. HECs have exhibited great performance in a variety of applications, and the possibilities are endless. In this work, spinel (CoCrFeMnNi)3O4 was synthesized on porous anodic aluminum oxide (AAO) as a photoanode and demonstrated substantial light absorption in the visible light spectrum with a band gap of 2.58 eV. The photoresponse performance of the HECs-AAO photoanode for water splitting was examined. The results indicate that the HECs have remarkable photoelectrochemical and photocatalytic activity. This discovery demonstrates HECs′ versatility in a variety of applications and their prospects for photocatalysis in particular. Furthermore, graphene has previously been used in a variety of surface-enhanced Raman scattering (SERS) applications. This study describes the formation of ordered gold nanoparticles (AuNPs) and graphene on a porous anodic aluminum oxide (AAO) substrate. The combination of AuNPs electromagnetic enhancement activity and graphene′s unique physical/chemical properties in the presence of AAO enhances SERS properties and enables microanalysis investigations. Numerous works will be compared to illustrate the critical role of each component in development. Additionally, this study aims to fill in the gaps in our understanding of the SERS enhancement mechanism.
Appears in Collections:	[Institute of Materials Science and Engineering] Electronic Thesis & Dissertation

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