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基于V掺杂BiPO的具有高近红外反射率的新型黄色颜料的水热合成与表征

Hydrothermal synthesis and characterization of novel yellow pigments based on V doped BiPO with high near-infrared reflectance.

作者信息

Ding Cheng, Han Aijun, Ye Mingquan, Zhang Yu, Yao Lingyun, Yang Jiling

机构信息

School of Chemical Engineering, Nanjing University of Science and Technology Nanjing 210094 China

出版信息

RSC Adv. 2018 May 29;8(35):19690-19700. doi: 10.1039/c8ra02406e. eCollection 2018 May 25.

DOI:10.1039/c8ra02406e
PMID:35541020
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9080647/
Abstract

In this study, a series of novel pigments based on V doped BiPO have been prepared for the first time a facile hydrothermal method and characterized using several analytical techniques, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), ultraviolet-visible-near-infrared (UV-vis-NIR) spectrometry, the Commission International de l'Eclairage (CIE) *** color scales and thermogravimetry and differential thermal analysis (TG-DTA). The investigation demonstrated that the synthesized pigments of BiP V O ( = 0.00, 0.01, 0.05, 0.08, 0.10, 0.15) had a monazite-type phase structure and were about 0.25-2 μm in size. Meanwhile, the substitution of V for P in BiPO resulted in the band gap of the pigments varying from 3.657 to 3.244 eV and its mechanism was explained by charge-transfer and energy band theory, while the color changed from white to yellow. More importantly, the V doped pigments possessed high NIR reflectance (>72%) and NIR solar reflectance (≥75.64%) in the range 700-2500 nm. Moreover, coatings colored with synthetic pigments have higher NIR solar reflectance (≥78.59%) than conventional pigments. Additionally, the pigments showed good thermal/chemical stabilities in high-temperature/acid/alkaline tests. In conclusion, the pigments have the potential to be applied as "cool pigments" to reduce energy consumption.

摘要

在本研究中,首次采用简便的水热法制备了一系列基于V掺杂BiPO的新型颜料,并使用多种分析技术对其进行了表征,如X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)、紫外-可见-近红外(UV-vis-NIR)光谱、国际照明委员会(CIE)***颜色标尺以及热重分析和差示热分析(TG-DTA)。研究表明,合成的BiP V O颜料( = 0.00、0.01、0.05、0.08、0.10、0.15)具有独居石型相结构,尺寸约为0.25 - 2μm。同时,BiPO中V对P的取代导致颜料的带隙从3.657 eV变化到3.244 eV,其机理通过电荷转移和能带理论进行了解释,而颜色从白色变为黄色。更重要的是,V掺杂颜料在700 - 2500 nm范围内具有高近红外反射率(>72%)和近红外太阳反射率(≥75.64%)。此外,用合成颜料着色的涂层比传统颜料具有更高的近红外太阳反射率(≥78.59%)。此外,这些颜料在高温/酸/碱测试中表现出良好的热/化学稳定性。总之,这些颜料有潜力作为“凉爽颜料”应用以降低能源消耗。

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