Simultaneous promotion of mechanical and electrical properties of hot-pressing halloysite-based mullite ceramics through carbon incorporation

Significantly improved mechanical properties of mullite ceramics by adding AlOOH with different sizes and morphologies

“…Previous studies have also indicated that the presence of pores generally leads to a decrease in the mechanical properties of ceramic materials. 47 The thermal transformation of AlOOH-R to stable α-Al 2 O 3 occurs at 1316 • C (Figure 4C), whereas the hot-press sintering temperature is 1300 • C. The sintering temperature is lower than the phase transition temperature of AlOOH-R, which is not beneficial for the grain growth of mullite. 47 Resultantly, the incomplete growth of columnar rodlike mullite crystals with different sizes is observed, as shown in Figure 8D-F.…”

“…The similar density of resultant mullite ceramics can be attributed to the mullitization process, which takes place beyond 1300 • C in all cases. 47 Figure 9B shows the mechanical properties of the sintered ceramics prepared from pyrophyllite and AlOOH with different sizes and morphologies. Compared to ceramic without AlOOH, the flexural strength and fracture toughness of mullite ceramics introduced by AlOOH are significantly enhanced.…”

Halloysite-TiO2 Nanocomposites for Water Treatment: A Review

“…Based on a Science Direct search conducted, it was found that over the last decade, halloysite nanocomposites have received much attention for many applications (Figure 2). Some of these applications include drug delivery [9,10], medical implants [11,12], nanoreactors [13,14], catalysis [15][16][17][18], optics [19,20], electrical engineering [21,22], magnetic materials [7,23], and energy storage [24]. This attention is due to their physicochemical properties, including their tubular structure, ion exchange, and hydrophobicity.…”

“…delivery [9,10], medical implants [11,12], nanoreactors [13,14], catalysis [15][16][17][18], optics [19,20], electrical engineering [21,22], magnetic materials [7,23], and energy storage [24]. This attention is due to their physicochemical properties, including their tubular structure, ion exchange, and hydrophobicity.…”

“…Such composite systems have a high adsorption capacity and can be used for water purification to remove inorganic and organic pollutants. Much attention has been devoted to the development of inexpensive and environmentally friendly TiO2-HNT composites that are delivery [9,10], medical implants [11,12], nanoreactors [13,14], catalysis [15][16][17][18], optics [19,20], electrical engineering [21,22], magnetic materials [7,23], and energy storage [24]. This attention is due to their physicochemical properties, including their tubular structure, ion exchange, and hydrophobicity.…”