Abstract
Recent advancements in pigmentation technology have focused on the development of cost-effective routes to achieve high near-infrared (NIR) reflectivity, offering multifunctional and sustainable applications over conventional methods. Here, we have developed a modified route for the preparation of BiVO4/ZrO2 composite with tuned heterojunction in it. Several advanced techniques were employed to investigate the elemental composition, microstructure, band gap energy, particle size, electronic transition, and color characteristics of the composite. The band gap of BiVO4 was tuned to optimize its suitability for the efficient NIR solar reflections. N2 adsorption and desorption studies indicated that the composite had a typical microporous material behavior, categorized as a type IV isotherm. Thermogravimetric analysis (TGA) and differential thermogravimetry (DTG) revealed excellent thermal stability of the composite up to 800 °C. The equimolar ratio of the composite (1:1 BiVO4/ZrO2) composite demonstrated appreciable NIR solar reflectance, reaching 96%, and exhibited an intense yellow color with excellent color characteristics. Consequently, (1:1 BiVO4/ZrO2) composite holds significant promise as a material for the development of multifunctional, thermally stable, anti-corrosive, and energy-saving exterior cool roof applications.
Published Version
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