当前位置：
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Development of Photoluminescent Translucent Wood toward Photochromic Smart Window Applications
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-06-04 , DOI: 10.1021/acs.iecr.1c01603 Salhah Al-Qahtani 1 , Enas Aljuhani 2 , Rasha Felaly 2 , Kholood Alkhamis 3 , Jafar Alkabli 4 , Alaa Munshi 2 , Nashwa El-Metwaly 2, 5
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-06-04 , DOI: 10.1021/acs.iecr.1c01603 Salhah Al-Qahtani 1 , Enas Aljuhani 2 , Rasha Felaly 2 , Kholood Alkhamis 3 , Jafar Alkabli 4 , Alaa Munshi 2 , Nashwa El-Metwaly 2, 5
Affiliation
|
Photochromic transparent wooden materials are highly critical and attractive for smart windows, which have been scarcely investigated. In this context, we develop photochromic and fluorescent translucent wood with a color switching ability in the UV and visible spectrum regions, which is associated with color shifting properties. The fluorescent and photochromic translucent wood were generated by permeating a lignin-modified wooden substrate using a formulation containing methyl methacrylate (MMA) and a photoluminescent lanthanide-doped aluminum strontium oxide (SrAl2O4:Eu2+, Dy3+; ASOED) pigment characterized by good photo- and thermal stability. For a better preparation of photoluminescent transparent wood, the ASOED phosphor must be efficiently dispersed without aggregation in pre-polymerized MMA. This translucent wooden substrate demonstrated a color change from colorless in visible light to green under irradiation with UV as designated by CIE Lab colorimetric results. The morphological characteristics of the generated pigment nanoparticles (NPs) were studied using transmission electron microscopic micrographs. Scanning electron microscopy, elemental mapping, energy-dispersive X-ray spectroscopic analysis, wavelength-dispersive X-ray fluorescence spectroscopy, and hardness properties, in addition to UV–vis absorption and emission spectroscopy of the photochromic translucent wood samples, were used. The prepared photoluminescence transparent wood showed an absorption signal at 365 nm and two emission signals at 433 and 517 nm. The findings demonstrated that the generated transparent luminescent wood exhibited improved UV protection and superhydrophobic activity. The produced transparent luminescent wood showed fast and reversible photochromic responses to UV light without fatigue.
中文翻译：
向光致变色智能窗应用开发光致发光半透明木材
光致变色透明木质材料对于智能窗户非常重要且具有吸引力，但鲜有研究。在这种情况下，我们开发了光致变色和荧光半透明木材，在紫外和可见光谱区域具有颜色切换能力，这与颜色偏移特性有关。荧光和光致变色半透明木材是通过使用含有甲基丙烯酸甲酯 (MMA) 和光致发光镧系元素掺杂的铝锶氧化物 (SrAl 2 O 4 :Eu 2+ , Dy 3+ ) 的配方渗透木质素改性的木质基材而产生的。; ASOED) 颜料，具有良好的光稳定性和热稳定性。为了更好地制备光致发光透明木材，ASOED 荧光粉必须在预聚合的 MMA 中有效分散而不聚集。这种半透明的木质基材在紫外线照射下表现出从可见光下的无色变为绿色，这由 CIE Lab 比色结果指定。使用透射电子显微照片研究了生成的颜料纳米粒子 (NPs) 的形态特征。除了光致变色半透明木材样品的紫外-可见吸收和发射光谱外，还使用了扫描电子显微镜、元素映射、能量色散 X 射线光谱分析、波长色散 X 射线荧光光谱和硬度特性。制备的光致发光透明木材在 365 nm 处显示出吸收信号，在 433 和 517 nm 处显示出两个发射信号。研究结果表明，生成的透明发光木材表现出改善的紫外线防护和超疏水活性。生产的透明发光木材对紫外线表现出快速且可逆的光致变色反应而不会疲劳。
更新日期：2021-06-17
中文翻译：
向光致变色智能窗应用开发光致发光半透明木材
光致变色透明木质材料对于智能窗户非常重要且具有吸引力，但鲜有研究。在这种情况下，我们开发了光致变色和荧光半透明木材，在紫外和可见光谱区域具有颜色切换能力，这与颜色偏移特性有关。荧光和光致变色半透明木材是通过使用含有甲基丙烯酸甲酯 (MMA) 和光致发光镧系元素掺杂的铝锶氧化物 (SrAl 2 O 4 :Eu 2+ , Dy 3+ ) 的配方渗透木质素改性的木质基材而产生的。; ASOED) 颜料，具有良好的光稳定性和热稳定性。为了更好地制备光致发光透明木材，ASOED 荧光粉必须在预聚合的 MMA 中有效分散而不聚集。这种半透明的木质基材在紫外线照射下表现出从可见光下的无色变为绿色，这由 CIE Lab 比色结果指定。使用透射电子显微照片研究了生成的颜料纳米粒子 (NPs) 的形态特征。除了光致变色半透明木材样品的紫外-可见吸收和发射光谱外，还使用了扫描电子显微镜、元素映射、能量色散 X 射线光谱分析、波长色散 X 射线荧光光谱和硬度特性。制备的光致发光透明木材在 365 nm 处显示出吸收信号，在 433 和 517 nm 处显示出两个发射信号。研究结果表明，生成的透明发光木材表现出改善的紫外线防护和超疏水活性。生产的透明发光木材对紫外线表现出快速且可逆的光致变色反应而不会疲劳。
京公网安备 11010802027423号