Hydrophobic chemical surface functionalization of hydroxyapatite nanoparticles for naphthalene removal

Bouiahya, K.; Oulguidoum, Abdeladim; Laghzizil, A.; Shalabi, Manal; Nunzi, Jean‐Michel; Masse, Sylvie

doi:10.1016/j.colsurfa.2020.124706

Cited by 19 publications

(2 citation statements)

References 29 publications

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“…Based on the SEM results, the PUR composites possess a well-developed structure with a dominant number of closed-cells, which are not able to accommodate the water. Therefore, it seems that an increased water uptake capacity results from the hydrophilic character of incorporated fillers—lavender, as well as lavender functionalized with kaolinite and hydroxyapatite, which also possess a hydrophilic character [ 80 , 81 , 82 ]. The more hydrophilic character of PUR composites is confirmed by the results of contact angle ( Figure 10 and Figure 11 )—on the incorporation of lavender fillers, the contact angle decreases from 123° (for PUR_REF) to 119, 115, and 110° for PUR_L.…”

Section: Resultsmentioning

confidence: 99%

Polyurethane Hybrid Composites Reinforced with Lavender Residue Functionalized with Kaolinite and Hydroxyapatite

et al. 2021

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Polyurethane (PUR) composites were modified with 2 wt.% of lavender fillers functionalized with kaolinite (K) and hydroxyapatite (HA). The impact of lavender fillers on selected properties of PUR composites, such as rheological properties (dynamic viscosity, foaming behavior), mechanical properties (compressive strength, flexural strength, impact strength), insulation properties (thermal conductivity), thermal characteristic (temperature of thermal decomposition stages), flame retardancy (e.g., ignition time, limiting oxygen index, heat peak release) and performance properties (water uptake, contact angle) was investigated. Among all modified types of PUR composites, the greatest improvement was observed for PUR composites filled with lavender fillers functionalized with kaolinite and hydroxyapatite. For example, on the addition of functionalized lavender fillers, the compressive strength was enhanced by ~16–18%, flexural strength by ~9–12%, and impact strength by ~7%. Due to the functionalization of lavender filler with thermally stable flame retardant compounds, such modified PUR composites were characterized by higher temperatures of thermal decomposition. Most importantly, PUR composites filled with flame retardant compounds exhibited improved flame resistance characteristics—in both cases, the value of peak heat release was reduced by ~50%, while the value of total smoke release was reduced by ~30%.

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Section: Resultsmentioning

confidence: 99%

Polyurethane Hybrid Composites Reinforced with Lavender Residue Functionalized with Kaolinite and Hydroxyapatite

et al. 2021

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“…These changes probably occurred as a result of the interaction of hydroxylapatite (Ca5(PO4)3(OH)) with the resins to form asphaltenes. Thanks to its innate large hydrophilicity, the CBP, which is rich in OH groups [25], has a great potential to strongly bond with hydrophobic materials, notably bitumen. This intermolecular bonding may involve the Van der Waals and electrostatic interactions and also the adsorption via several chemical groups such as hydroxylic, carboxylic, and amine groups.…”

Section: Resultsmentioning

confidence: 99%

Uncovering the Hidden Value of Waste Cow Bones Towards their Use as a Sustainable Biofiller for Hot-Mix Asphalt Paving Applications

Nciri

Kim

Cho

et al. 2022

MSF

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This work is aimed at uncovering the hidden value of waste cow bones towards their use as a sustainable biofiller for hot-mix asphalt (HMA) paving applications. To do so, the effect of various contents of calcined cow bone powder (e.g., 5, 10, and 15 wt. % CBP) on the AP-5 bitumen performance was investigated. Numerous lab techniques were adopted to assess the physicochemical attributes of finished filler-asphalt mastics, namely: elemental analysis, Fourier transform-infrared spectroscopy (FT-IR), thin-layer chromatography-flame ionization detection (TLC-FID), needle penetration, ring and ball softening point, Brookfield viscometer, and ductility. Iatroscan analysis revealed that the CBP treatment did not alter the saturates but induced an increase in the fractions of aromatics/asphaltenes and a decrease in the resins. The FT-IR scan highlighted that the CBP–binder interactions were mainly governed by physical mechanisms rather than chemical ones. The empirical methods showed that the CBP incorporation enhanced the stiffness/hardness, the consistency, as well as the high-temperature performance of bituminous mixtures. Overall, the use of waste cow bones as a green biofiller is viable and profitable, and it has the potential to reduce the environmental pollution caused by the livestock industry while also improving the performance of hot-asphalt mixes and extending the pavement life at a low cost.

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Floating Solar Materials and their Devices for Energy Conversion and Environment Remediation

Liu,

Pan,

Huang

et al. 2024

Advanced Sustainable Systems

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Floating solar materials and their devices, which can effectively solve the problems faced by powder solar materials, such as difficult recycling, poor stability, and difficult maintenance, have received widespread attention in recent years. However, it is still in the early stage of development and still faces many challenges in material design, device preparation, and systematic application. Therefore, it is particularly necessary to summarize the research progress of related aspects to promote the development of this field (To achieve large‐scale applications, it is necessary to develop devices that can be applied on a large scale). In this review, the systematic construction methods of floating materials are reviewed from the aspects of lightweight carrier integration as well as functionalization and surface modification. Subsequently, the recent studies on floating solar materials and their devices are categorized and summarized. Their applications in the purification of polluted seawater, water splitting, CO2 reduction, and prevention of water bloom are reviewed in detail. Finally, the outlook for future development is critically discussed.

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Hydrophobic chemical surface functionalization of hydroxyapatite nanoparticles for naphthalene removal

Cited by 19 publications

References 29 publications

Polyurethane Hybrid Composites Reinforced with Lavender Residue Functionalized with Kaolinite and Hydroxyapatite

Polyurethane Hybrid Composites Reinforced with Lavender Residue Functionalized with Kaolinite and Hydroxyapatite

Uncovering the Hidden Value of Waste Cow Bones Towards their Use as a Sustainable Biofiller for Hot-Mix Asphalt Paving Applications

Floating Solar Materials and their Devices for Energy Conversion and Environment Remediation

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