کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5437289 | 1509798 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of novel nontoxic BiFe1âxAlxO3/mica-titania pigments with high NIR reflectance
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and characterization of novel nontoxic BiFe1âxAlxO3/mica-titania pigments with high NIR reflectance Synthesis and characterization of novel nontoxic BiFe1âxAlxO3/mica-titania pigments with high NIR reflectance](/preview/png/5437289.png)
چکیده انگلیسی
A series of novel nontoxic near-infrared (NIR) reflective pigments based on Al-doped BiFeO3 coated mica-titania were synthesized by precipitation combined with sol-gel method. The pigments of the formula BiFe1âxAlxO3/mica-titania (x = 0, 0.1, 0.2, 0.3, 0.4) were characterized by XRD, FE-SEM, TG-DTA, UV-vis-NIR spectrophotometer and CIE L* a* b* color scales. The results illustrate that the BiFeO3 nanoparticles are coated on the surface of mica-titania uniformly, and the doped BiFe1âxAlxO3/mica-titania is similar to BiFeO3/mica-titania composite in morphology. Furthermore, the absorption edge of composite pigments shift to shorter wavelength (533-495 nm) can be attributed to O2p-Fe3d charge transfer transitions and change the color of the pigments from brown to orange. Additionally, the NIR solar reflectance of the powdered pigments and pigmented coatings were measured. The results reveal that with the increase of progressive doping of Al3+ for Fe3+, the NIR solar reflectance of the pigments increase gradually and exhibit higher NIR solar reflectance (R* ⥠47.8%) than the conventional pigment of similar color. Moreover, we also evaluated the thermal and chemical stability of the pigments. In conclusion, the pigments have the potential to be applied as “cool pigments”.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 18, 15 December 2017, Pages 16488-16494
Journal: Ceramics International - Volume 43, Issue 18, 15 December 2017, Pages 16488-16494
نویسندگان
Lin Yuan, Aijun Han, Mingquan Ye, Xingxing Chen, Cheng Ding, Lingyun Yao,