Development of Nano TiO₂–Geopolymer Functional Composite as Antifouling Bricks

Abstract

Abstract. The purpose of study is to examine the ability of nano TiO 2 -geopolymer functional composite as antifouling bricks. The samples were synthesized through alkali-activation method at 70 0 C for 1 hour by mixing metaclay with TiO 2 nanoparticles and activated with sodium silicate solution. There were two series of samples produced, namely, GT_A with addition of 2% nanoTiO 2 and GT_B with addition of 4% nano TiO 2 relative to the mass of metaclay. The samples were immersed in water and in 1M H 2 SO 4 solution for 4 days to examine the resistance of composites in hars environment. The x-ray diffraction (XRD) was performed to examine the chemical compositions of the samples before and after environmental test. The morphology of the samples surfaces was examined by using Scanning Electron Microscopy (SEM) coupled with energy dispersive spectroscopy (EDS). Based on this study, sample GT_A shows its excellent properties as antifouling bricks. The addition of nano TiO 2 was found to improve the quality of geopolymers as a high performance bricks.

Thermo-Mechanical Properties of Geopolymer/Carbon Fiber/TiO₂ Nanoparticles (NPs) Composite

“…TiO2 NPs offers a lot of potential applications beyond traditional semiconductor material. This material can be used as protective or anti corrosion coating material, thermal control, self-cleaning agent, antibacterial and graffiti coating for building and structure [7]- [9]. One particular advantage of using TiO2 NPs is its inert properties, non-toxic, cheap and abundantly available.…”

Development of Photoactive Nano TiO₂ Thin Film-Geopolymer Based on Laterite Soils Deposit Gowa Regency as Self-Cleaning Material

“…In the late 1978, geopolymer was developed by Davidovits, synthesized through polycondensation of aluminosilicate minerals (e.g., metakaolin, clay, fly ash) with a solution of alkali (e.g., sodium hydroxide and sodium silicate) [4]. Geopolymer is a green material that is developed as a promising material because of its mechanical strength, heat and high fire resistance [5], geopolymer can react, polycondensate and achieve dimensional stability at temperatures below 100℃ [6] and has no impact on the environment [7].…”