高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

稀土掺杂Bi2-xGdxMoO6的合成及近红外反射性能研究

闫峻琳1，李晓东1，刘东洋2，李明哲3，张  粟4   

  1. 1. 吉林建筑大学材料科学与工程学院

    2. 吉利汽车研究院（宁波）有限公司

    3. 浙江吉润汽车有限公司宁波杭州湾分公司 4. 中国科学院长春应用化学研究所稀土资源利用国家重点实验室

  • 收稿日期:2025-03-31 修回日期:2025-06-25 网络首发:2025-06-30 发布日期:2025-06-30
  • 通讯作者: 张粟 E-mail:zhangsu@ciac.ac.cn
  • 基金资助:
    吉林省科技发展计划项目(批准号：20230101051JC)资助

Synthesis and Near-Infrared Reflective Properties of Rare-Earth-Doped Bi2-xGdxMoO6

YAN Junlin1, LI Xiaodong1, LIU Dongyang2, LI Mingzhe3, ZHANG Su4   

  1. 1. School of Materials Science and Engineering, Jilin Jianzhu University

    2. Geely Automobile Research Institute (Ningbo) Co., Ltd.

    3. Geely Automobile (Ningbo Hangzhou Bay Branch) of Zhejiang Jirun Automobile Co., Ltd. 4. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences

  • Received:2025-03-31 Revised:2025-06-25 Online First:2025-06-30 Published:2025-06-30
  • Contact: ZHANG Su E-mail:zhangsu@ciac.ac.cn
  • Supported by:
    Supported by the Jilin Province Science and Technology Development Plan Project(No. 20230101051JC)

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摘要： 面对全球气候变化与城市热岛效应日益加剧的挑战，开发兼具高近红外反射性能与热调控能力的节能功能材料已成为研究热点. 传统氧化物材料如Bi2MoO6在近红外波段的反射性能仍存在一定局限. 近年来，稀土改性钼酸盐材料因其优异的光学响应特性及结构稳定性，在近红外反射材料领域具有广泛的应用价值. 本研究采用固相合成法制备了Gd3+掺杂的Bi2-xGdxMoO6(x = 0，0.2，0.4，0.6，0.8，1.0)近红外反射材料，通过X射线衍射（XRD）、扫描电子显微镜（SEM）、能谱分析（EDS）、傅里叶变换红外光谱（FTIR）、拉曼光谱（Raman）、近红外（NIR）反射测试、热重-差热分析（TG-DSC）及隔热性能实验对样品进行了表征. 结果表明，所合成的样品具有良好的结晶度. Gd3+掺杂引起带隙收缩（2.87 eV~2.80 eV），导致吸收边红移，增强了样品对450~600 nm蓝绿光的吸收，使其呈现更明显的黄色调，从而实现色彩调控. Bi2-xGdxMoO6系列样品皆表现出较高的近红外反射率，全部高于87.68%，均显著高于TiO2（75.66%）. 尤其是x = 0.4时，样品的近红外反射率达到90.11%，近红外太阳反射率为89.53%，分别比TiO2高出14.45%和9.24%. 红外线灯照射实验进一步验证了其优异的节能隔热性能. TG-DSC分析表明，Bi2-xGdxMoO6颜料具有优异的热稳定性，可在高温环境下长期使用，为高效隔热材料提供了新的选择.

关键词: 稀土, Bi2MoO6, 近红外反射性能, Gd3+

Abstract: In response to the escalating challenges of global climate change and urban heat island effects, the development of energy-efficient functional materials with high near-infrared (NIR) reflectance and effective thermal regulation capabilities has become a research focus. Traditional oxide materials, such as Bi2MoO6, still exhibit certain limitations in NIR reflectance. In recent years, rare-earth-modified molybdate materials have attracted significant attention in the field of NIR-reflective coatings due to their excellent optical response characteristics and structural stability. In this study, Gd3+-doped Bi2-xGdxMoO6(x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) NIR reflective materials were synthesized via a solid-state reaction method. The obtained samples were systematically characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), energy-dispersive spectroscopy(EDS), Fourier transform infrared spectroscopy(FTIR), Raman spectroscopy, near-infrared(NIR) reflectance spectroscopy, thermogravimetric-differential scanning calorimetry(TG-DSC), and thermal insulation performance tests. The results indicated that the synthesized samples exhibited good crystallinity. Gd3+ doping induced a bandgap narrowing (from 2.87 eV to 2.80 eV), leading to a redshift of the absorption edge and enhanced absorption in the 450~600 nm blue-green region, resulting in a more pronounced yellow hue and enabling effective color modulation. All Bi2-xGdxMoO6 samples exhibited high NIR reflectance, with values exceeding 87.68%, significantly higher than that of TiO2(75.66%). In particular, the sample with x = 0.4 demonstrated the highest NIR reflectance of 90.11% and a NIR solar reflectance of 89.53%, which are 14.45% and 9.24% higher than those of TiO2, respectively. Infrared lamp irradiation experiments further confirmed the superior energy-saving and thermal insulation performance of the materials. TG-DSC analysis revealed that Bi2-xGdxMoO6 pigments possess excellent thermal stability, allowing for long-term application in high-temperature environments. These findings offer a new and promising alternative for high-performance thermal insulation materials.

Key words: Rare earths, Bi2MoO6; Near-infrared reflectance properties, Gd3+

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