Hydrothermal synthesis and characterization of novel yellow pigments based on V ⁵⁺ doped BiPO ₄ with high near-infrared reflectance

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.