欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用溶胶-水热法制备了不同尺寸的SnO2纳米粒子,并将其作为表面增强拉曼散射（Surface-enhanced Raman scattering,SERS）活性基底,重点探讨了表面缺陷能级与SERS性能的关系.观察到4-巯基苯甲酸（4-MBA）吸附在150℃水热合成的SnO2纳米粒子上的SERS信号最强,随着在空气中煅烧温度的升高,SERS信号逐渐减弱.分别用透射电子显微镜、紫外-可见光谱、荧光光谱、X射线衍射和X射线光电子能谱对SnO2纳米粒子进行了表征.结果表明,SnO2纳米粒子的表面氧空位和缺陷等表面性质在增强拉曼散射性能中发挥着重要的作用,表面氧空位和缺陷等含量越高其SERS信号就越强.
英文摘要：
Pure SnO2 nanoparticles were prepared by the sol-hydrothermal method and were employed as surface-enhanced Raman scattering（SERS） active substrates.The relationships between defect levels and SERS effect of SnO2 nanoparticles were mainly investigated.The strongest SERS signals were observed when the 4-mercaptobenzoic acid molecules were adsorbed on the surface of SnO2 nanoparticles（hydrothermal pro-duct）,with the increase of calcining temperature,the SERS signals became weaker.Transmission electron microscopy,UV-Vis diffuse reflectance spectroscopy,photoluminescence X-ray diffraction and X-ray photoelectron spectroscopy have been employed to investigate the SnO2 nanoparticles.The results indicated that surface properties of SnO2,such as surface defects and oxygen vacancies,etc,play important roles in the SERS.The higher is the content of surface defects and oxygen vacancies,the stronger is SERS signals.
同期刊论文项目
同项目期刊论文
Fabrication of Silver Decorated Anodic Aluminum Oxide Substrate and Its Optical Properties on Surfac
Protein-Mediated Sandwich Strategy for Surface-Enhanced Raman Scattering: Application to Versatile P
Metal-Semiconductor Contacts Induce the Charge-Transfer Mechanism of Surface-Enhanced Raman Scatteri
Density Functional Theory Calculation of SERS Spectra of Trans-1,2-Bis(4-Pyridyl)-Ethylene on Silver
Hierarchical Self-Assembly of Surfactant-Encapsulated and Organically Grafted Polyoxometalate Comple
Preparation, Structure, and Imaging of Luminescent SiO2 Nanoparticles by Covalently Grafting Surfact
Drying and Nondrying Layer-by-Layer Assembly for the Fabrication of Sodium Silicate/TiO(2) Nanoparti
Embedding graphene nanoparticles into poly(N,N ';-dimethylacrylamine) to prepare transparent nanocom
A supramolecular gel based on an adenine symmetrically grafted Anderson-type polyoxometalate complex
Luminescent Dendrimers Composed of Quinacridone Core and Carbazole Dendrons: Structure, Electrochemi
Synthesis and redox-responsive self-assembly of ferrocene grafted Anderson-type polyoxometalate hybr
A green emissive amorphous fac-Alq(3) solid generated by grinding crystalline blue fac-Alq(3) powder
Self-assembly and supramolecular liquid crystals based on organic cation encapsulated polyoxometalat
Synthesis and characterizations of novel spindle-like terphenyl-type chromophores for non-linear opt
Nucleation of Aqueous Semiconductor Nanocrystals: A Neglected Factor for Determining the Photolumine
Bioinspired Water-Vapor-Responsive Organic/Inorganic Hybrid One-Dimensional Photonic Crystals with T
Coomassie Brilliant Dyes as Surface-Enhanced Raman Scattering Probes for Protein-Ligand Recognitions
Exponential growth of layer-by-layer assembled coatings with well-dispersed ultrafine nanofillers: a
Stable water-dispersed organic nanoparticles: preparation, optical properties, and cell imaging appl
Sensing of polycyclic aromatic hydrocarbons with cyclodextrin inclusion complexes on silver nanopart
A pluronic F127 coating strategy to produce stable up-conversion NaYF4:Yb,Er(Tm) nanoparticles in cu
Achieving high open-circuit voltage in the PPV-CdHgTe bilayer photovoltaic devices on the basis of t
Correlation between Annealing-Induced Growth of Nanocrystals and the Performance of Polymer: Nanocry
Theoretical study on the charge transport property of Pt((CNBu)-Bu-t)(2)(CN)(2) nanowires induced by
A Twisting Donor-Acceptor Molecule with an Intercrossed Excited State for Highly Efficient, Deep-Blu
Instantaneous and reversible gelation of organically grafted polyoxometalate complexes with dicarbox
Construction of nanoparticle superstructures on the basis of host-guest interaction to achieve perfo
Avoiding coffee ring structure based on hydrophobic silicon pillar arrays during single-drop evapora
Photo-Responsive Self-Assembly of an Azobenzene-Ended Surfactant-Encapsulated Polyoxometalate Comple
Surface Chemistry Routes to Modulate the Photoluminescence of Graphene Quantum Dots: From Fluorescen
Patterning Organic/Inorganic Hybrid Bragg Stacks by Integrating One-Dimensional Photonic Crystals an
Interfacial Charge-Transfer Effects in Semiconductor-Molecule-Metal Structures: Influence of Contact
Elevated Ag nanohole arrays for high performance plasmonic sensors based on extraordinary optical tr
Detection of protein deposition within latent fingerprints by surface-enhanced Raman spectroscopy im
pH-Response Mechanism of p-Aminobenzenethiol on Ag Nanoparticles Revealed By Two-Dimensional Correla
Quantitative evaluation of proteins with bicinchoninic acid (BCA): resonance Raman and surface-enhan
期刊信息
位置：