Controlling the hardness and wear resistance of opaque white glaze by addition of halloysite clay in the composition

Selli, Neslihan Tamsü; Basaran, Neslihan

doi:10.1016/j.bsecv.2022.01.002

Cited by 4 publications

(6 citation statements)

References 55 publications

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“…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.…”

Section: Introductionmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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Halloysite-TiO2 Nanocomposites for Water Treatment: A Review

2023

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Halloysite nanotubes (HNTs) are clay minerals with a tubular structure that can be used for many different applications in place of carbon nanotubes. Indeed, HNTs display low/non-toxicity, are biocompatible, and can be easily prepared. Moreover, the aluminum and silica groups present on HNTs’ inner and outer surfaces facilitate the interaction with various functional agents, such as alkalis, organosilanes, polymers, surfactants, and nanomaterials. This allows the deposition of different materials, for instance, metal and non-metal oxides, on different substrate types. This review article first briefly presents HNTs’ general structure and the various applications described in the last 20 years (e.g., drug delivery, medical implants, and energy storage). Then, it discusses in detail HNT applications for water purification (inorganic and organic pollutants). It focuses particularly on HNT-TiO2 composites that are considered very promising photocatalysts due to their high specific surface area and adsorption capacity, large pore volume, good stability, and mechanical features.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Halloysite-TiO2 Nanocomposites for Water Treatment: A Review

2023

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“…Stains are applied in multiple layers, with each layer being fired separately. A glaze layer is then applied over the staining layers and fired before cementation to enhance color stability, stain resistance, and overall aesthetic appearance 4 . After the third firing, the ceramic is ready for cementation, and any subsequent firings are solely to enhance characterization 3 .…”

Section: Introductionmentioning

confidence: 99%

Long-term effect of firing protocols on surface roughness and flexural strength of lithium disilicate glass-ceramic

Lima,

Vivanco,

Rodrigues

et al. 2023

Braz. Dent. J.

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This study evaluated the effect of different firing protocols on the surface roughness and flexural strength of CAD/CAM lithium disilicate glass-ceramic (LD) after aging methods. Forty-two LD bars of 16 x 4 x 2 mm (IPS e-max CAD, Ivoclar) were randomly separated into two groups according to firing protocols: Single firing-Staining, glazing, and crystallization in a single step; Multiple firings-Crystallization+First staining+Firing+Second staining+Firing+Glazing+Firing. After protocols, initial surface roughness readings were taken (Surfcorder SE1700, Kosakalab). Samples were then randomly separated into three groups (n=7) according to the aging methods they were submitted: Thermomechanical cycling (TMC, ER System, Erios, 1,200,000 cycles, 0.3 MPa, 2 Hz and 5°C/37°C/55°C, 30 s swell time); Simulated toothbrushing (STB, Pepsodent, MAVTEC, 73,000 cycles), and Control (no aging). Final surface roughness readings were done, and samples were submitted to a three-point bending test (OM100, Odeme Dental Research) and fractographic analysis by scanning electron microscopy (EVO-MA10, ZEISS). Data were analyzed (2-way ANOVA, (α=.05). There was no difference (p>.05) in the flexural strength between the firing protocols, regardless of the aging method. STB decreased the flexural strength of samples submitted to multiple firings, different from control (p<.05). Without aging (Control), before TMC, and after STB, LD had lower surface roughness when submitted to multiple firings than to single firing (p<.05). The firing protocols did not affect the flexural strength or the surface roughness of the lithium disilicate glass-ceramic, even after aging. However, toothbrushing negatively affected the flexural strength and smoothed the surface of the ceramic submitted to multiple firings.

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“…Halloysite is a mineral that mainly consists of silicon dioxide and aluminium oxides [40]. Clay minerals, such as kaolin, bentonite, and halloysite, belong to the kaoliniteserpentine subgroup and are described by the general chemical formula Al 2 Si 2 O 5 (OH) 4 .…”

Section: Introductionmentioning

confidence: 99%

Biochar, Halloysite, and Alginite Improve the Quality of Soil Contaminated with Petroleum Products

Wyszkowska,

Borowik,

Zaborowska

et al. 2023

Agriculture

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Investigations into the effective, fast, and economically viable remediation of soils polluted with petroleum-derived products are still relevant. The vegetative pot experiment was conducted at the Didactic-Experimental Garden greenhouse (NE, Poland, 53.759° N, 20.452° E) on loamy sand (LS) and sandy loam (SL) soils. Its main research objective was to assess the effectiveness of biochar (B), halloysite (H) and alginite (A) in the biological regeneration of contaminated soil diesel oil (DO) and petrol (P). The assessment was conducted by determining the magnitude of the adverse impact of these xenobiotics on the growth and development of Zea mays, as well as the activity of seven soil enzymes. The impact of the tested contaminants and sorbents was assessed based on the impact factors (IF) of DO and P, as well as B, H, and A on Zea mays biomass and enzymatic activity of the soil. Soil contamination with petroleum-derived products disrupted the growth and development of Zea mays. DO had a stronger inhibitory effect on plant growth compared to P. Zea mays cultivated in LS, which was less resistant to the effects of these contaminants compared to that cultivated in SL. The impact of DO and P on enzyme activity depended on the soil texture. DO stimulated enzyme activity in LS and SL, while P only did so in LS. All remediation substances, and biochar in particular, led to an increase in plant biomass in the DO-contaminated soils. Both biochar, halloysite and alginite also improved the biochemical quality index (BA) of SL and LS. Despite the unquestionable remediation potential of the analyzed sorbents, their highest efficacy can only be achieved by their application on soils with physicochemical properties corresponding to their characteristics, which is a valuable guideline for further research.

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Controlling the hardness and wear resistance of opaque white glaze by addition of halloysite clay in the composition

Cited by 4 publications

References 55 publications

Halloysite-TiO2 Nanocomposites for Water Treatment: A Review

Halloysite-TiO2 Nanocomposites for Water Treatment: A Review

Long-term effect of firing protocols on surface roughness and flexural strength of lithium disilicate glass-ceramic

Biochar, Halloysite, and Alginite Improve the Quality of Soil Contaminated with Petroleum Products

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