Low-cost bismuth yellow hybrid pigments derived from attapulgite. (February 2018)

• Record Type: Journal Article
• Authors: Wang, Xiaowen; Mu, Bin; Hui, Aiping; Wang, Qin; Wang, Aiqin
• Is Part Of: Dyes and pigments. Volume 149(2018)
• Page Start: 521
• Page End: 530
• Publication Date: 2018-02
• Subjects: Bismuth yellow -- Attapulgite -- Hybrid pigment -- Sol-gel -- Coloration mechanism; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2017.10.041
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Attapulgite/bismuth yellow hybrid pigments were successfully fabricated by sol-gel method followed by a calcining process. The color of the hybrid pigments was superior to BiVO4 samples after incorporating of the "magic wand" of attapulgite, and this strategy was also in favor of controlling the growth of bismuth yellow nanoparticles on the surface of attapulgite without the free agglomeration. This color improvement of hybrid pigments was mainly related to the change of band gap energy due to the doping of the compositions of attapulgite. The hybrid pigments prepared exhibited the optimal color properties ( L * = 79.39, a * = 4.69, b * = 86.19, C * = 86.32, and h° = 86.89) after introducing of 40% attapulgite. The as-prepared hybrid pigments could be served as an eco-friendly yellow colorant to replace the traditional and toxic ones for applications in both of hydrophobic polystyrene plastic and hydrophilic polyurethane resin, as well as facilely sprayed on various substrates. Therefore, this study will provide a feasible route to prepare the low-cost and high-grade bismuth yellow pigments with excellent color properties and thermal stability. Graphical abstract: Highlights: APT/BiVO4 hybrid pigments were fabricated by sol-gel method followed by a calcining process. The color of hybrid pigments was superior to BiVO4 after incorporating of APT. Hybrid pigments exhibited good compatibility with the polystyrene plastic and polyurethane resin. This study provided a feasible route to prepare low-cost bismuth yellow pigments.