Hydrophobic Modification of Spherical Y2O3:Eu3+ Powder Using Nonfluorinated Alkyl Silanes

IF 2.7 4区 材料科学 Q3 CHEMISTRY, PHYSICAL
Runzi Zhou, Cheng Wen, Haijun Xu, Zenghui Qiu, Xin Zhang
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引用次数: 0

Abstract

Abstract Europium‐doped yttrium oxide (Y 2 O 3 :Eu 3+ ) is one of the main red‐emitting luminescent materials currently used in light‐emitting devices owing to its high luminous efficiency, high color purity, and other excellent optical characteristics. However, Y 2 O 3 :Eu 3+ is hydrophilic, which is a major obstacle to its long‐term application in high‐humidity outdoor environments. Hydrophobic modification is a viable solution to this problem, and can give Y 2 O 3 :Eu 3+ many excellent properties and functions, such as self‐cleaning ability, anti‐static performance, oil/water separation functions, and corrosion resistance. This study reports the preparation of hydrophobic Y 2 O 3 :Eu 3+ particles modified with nonfluorinated alkyl silanes. Several influencing factors, including the length of the carbon chain in the silane coupling agent, the pH value of the reaction system, the reaction temperature, and the ratio of reactants, on the hydrophobicity of the prepared samples are studied in detail, and the optimal conditions are determined. A superhydrophobic Y 2 O 3 :Eu 3+ material with a water contact angle of 151.6° is finally obtained. Moreover, FTIR, TG, SEM, XPS, XRD, and PL are used to explore the mechanism of the hydrophobic modification and the structural and fluorescence performance changes imparted by this modification.
非氟化烷基硅烷对球形Y2O3:Eu3+粉体的疏水改性
摘要铕掺杂氧化钇(y2o3: eu3 +)具有发光效率高、色纯度高和其他优异的光学特性,是目前用于发光器件的主要红致发光材料之一。然而,y2o3: eu3 +是亲水的,这是其在高湿室外环境中长期应用的主要障碍。疏水改性是解决这一问题的可行方法,它可以赋予y2o3: eu3 +许多优异的性能和功能,如自清洁能力、抗静电性能、油水分离功能和耐腐蚀性。本文报道了用非氟化烷基硅烷修饰的疏水y2o3: eu3 +颗粒的制备。详细研究了硅烷偶联剂中碳链长度、反应体系pH值、反应温度、反应物配比等因素对制备样品疏水性的影响,并确定了最佳条件。最终得到了水接触角为151.6°的超疏水性y2o3: eu3 +材料。并利用FTIR、TG、SEM、XPS、XRD、PL等分析了疏水改性的机理以及改性后结构和荧光性能的变化。
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来源期刊
Particle & Particle Systems Characterization
Particle & Particle Systems Characterization 工程技术-材料科学:表征与测试
CiteScore
5.50
自引率
0.00%
发文量
114
审稿时长
3.0 months
期刊介绍: Particle & Particle Systems Characterization is an international, peer-reviewed, interdisciplinary journal focusing on all aspects of particle research. The journal joined the Advanced Materials family of journals in 2013. Particle has an impact factor of 4.194 (2018 Journal Impact Factor, Journal Citation Reports (Clarivate Analytics, 2019)). Topics covered include the synthesis, characterization, and application of particles in a variety of systems and devices. Particle covers nanotubes, fullerenes, micelles and alloy clusters, organic and inorganic materials, polymers, quantum dots, 2D materials, proteins, and other molecular biological systems. Particle Systems include those in biomedicine, catalysis, energy-storage materials, environmental science, micro/nano-electromechanical systems, micro/nano-fluidics, molecular electronics, photonics, sensing, and others. Characterization methods include microscopy, spectroscopy, electrochemical, diffraction, magnetic, and scattering techniques.
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