Synthesis and colour prediction of stable pigments from rice husk biomass

Abstract

In this work, we present a method to convert rice husk (RH) biowaste to a wide range of thermally stable and colour intensive pigments. The silica nanoparticles derived from acid-treated RHs are amorphous and of high purity, which make them ideal for the synthesis of ceramic pigments. The reactivity of the silica nanoparticles from RHs is comparable to that of fumed silica. Considering the high cost and health-related/environment-related issues associated with the production of fumed silica, the route to synthesise high-quality pigments using RH biowaste satisfies the sustainable development, economy and environmental demands. Furthermore, a large number of pigments with various colours were prepared through adjusting the formulation of the raw materials. A predictive model for the colours of the ceramic pigments as a function of pigment chemical composition was developed, which provides a quick colour prediction of the synthesized pigments based on their chemical composition. This article contains supporting information that will be made available online once the issue is published.

Large-Scale and Controllable Synthesis of Graphene Quantum Dots from Rice Husk Biomass: A Comprehensive Utilization Strategy

“…15–28 wt %), the most common approaches to take advantage of RHs are to prepare silicon-based materials, including silica, , silicon, silicon carbide, silicon nitride, silicon tetrachloride, and zeolites . These RH-derived silicon-containing materials can find wide applications in the fields of adsorption, pigment, catalysis, optical devices, energy storage, etc. It should be noted that there is also a large amount of organic components, including lignin, cellulose, and hemicellulose (ca.…”

Versatile Nanostructures from Rice Husk Biomass for Energy Applications

“…As the silica NSs derived from RHs benefit from the amorphous phase, high purity, and porous structure with a high specific surface area, they exhibit high activity with various inorganic (e.g., ZrO 2 ) and organic (e.g., ethylene glycol) compounds to produce various silicon‐based complexes for practical applications.…”

Vielfältige Nanostrukturen aus Reishülsen‐Biomasse für Energieanwendungen

“…Aufgrund der amorphen Phase, der hohen Reinheit und der porösen Struktur mit großer spezifischer Oberfläche weisen die von RH abgeleiteten SiO 2 ‐Nanostrukturen eine hohe Aktivität auf, und mit verschiedenen anorganischen (z. B. ZrO 2 ) und organischen Verbindungen (z. B. Ethylenglykol) können verschiedene siliciumhaltige Komplexe für praktische Anwendungen hergestellt werden.…”