Bismuth-mesoporous silica-based phase change materials for thermal energy storage

Lincu, Daniel; Ioniţă, Simona; Trică, Bogdan; Culiţă, Daniela C.; Matei, Cristian; Berger, Daniela; Mitran, Raul−Augustin

doi:10.1016/j.apmt.2022.101663

Cited by 3 publications

(1 citation statement)

References 46 publications

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“…Recently, encapsulating n -alkanes into porous materials, such as aerogels, mesoporous silica, carbon foam, expanded graphite, metal–organic frameworks, and wood, is the most accessible and attractive technique to avoid liquid issue due to the strong capillary force and surface tension. − Wood is a natural renewable porous material with unique hierarchical structure, favorable mechanical strength, superior absorption capacity, and low price. − The delignified wood (DW) is considered the most attractive supporting material for n -alkane encapsulation after lignin and hemicellulose removal. , However, the poor solar-thermal conversion performance and low thermal conductivity of natural wood and n -alkanes greatly restrict their practical applications for solar-thermal utilization. , Furthermore, both natural wood and n -alkanes are highly flammable, thereby seriously limiting their application in fire-proof thermal storage fields . Therefore, it is essential to develop wood-based form-stable PCM composites simultaneously with superior solar-thermal storage efficiency, excellent flame retardancy, and improved thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Flame-Retardant and Form-Stable Phase-Change Composites Based on Phytic Acid/ZnO-Decorated Surface-Carbonized Delignified Wood with Superior Solar-Thermal Conversion Efficiency and Improved Thermal Conductivity

Yue

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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In order to efficiently exploit solar-thermal energy, it is essential to develop form-stable phase-change material (PCM) composites simultaneously with superior solar-thermal storage efficiency, excellent flame retardancy, and improved thermal conductivity. Herein, phytic acid (PA)-modified, zinc oxide-deposited, and surface-carbonized delignified woods (PZCDWs) were constructed by alkaline boiling, PA modification, ZnO deposition, and surface carbonization. Then, novel form-stable PCMs (PZPCMs) with superior solar-thermal storage efficiency, excellent flame retardancy, and improved thermal conductivity were fabricated by impregnating n-docosane into PZCDWs under vacuum. The PZCDW aerogels can well support the n-docosane and overcome liquid leakage owing to their superior surface tension and strong capillary force. Differential scanning calorimetry results showed that PZPCMs possessed superior n-docosane encapsulation yield and high phase-change enthalpy (185.2–213.1 J/g). Decorating delignified wood by surface carbonization and ZnO deposition significantly improved the solar-thermal conversion efficiency (up to 86.2%) and thermal conductivity (193.3% increased) of PCM composites. Furthermore, with the introduction of PA into PZPCMs, the peak heat release rate and total heat release of the PCM composites decreased considerably, indicating the enhanced flame retardancy of PZPCMs. In conclusion, the novel renewable wood-based PCM composites demonstrate promising potential in solar energy harnessing and thermal modulation technologies.

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Section: Introductionmentioning

confidence: 99%

Flame-Retardant and Form-Stable Phase-Change Composites Based on Phytic Acid/ZnO-Decorated Surface-Carbonized Delignified Wood with Superior Solar-Thermal Conversion Efficiency and Improved Thermal Conductivity

Yue

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Effective capture of As(V) from water by a facile one step hydrothermal synthesized of 2-D bismuthene quantum dots nanosorbent

Hassan,

Mahmoud,

Tharwat

et al. 2024

BMC Chemistry

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Arsenic species have been known for their toxic impact on human. Therefore, removal of such pollutant requires efficient and effective removal methodology from polluted water. In this study, bismuthene quantum dots (Bi-ene-QDs) were fabricated by a green and facile one pot-hydrothermal conversion reaction of Bi(NO3)3·5H2O. Bi-ene-QDs exhibited semi-spherical crystalline providing 6.0 nm 157.78 m2/g. Consequently, As(V) capturing by Bi-ene-QDs revealed optimum practical conditions at pH 3, interaction duration time 40 min and 10 mg Bi-ene-QDs dosage. The interaction of As(V) ions with Bi-ene-QDs were confirmed by the appearance of As-O stretching vibration. Moreover, Bi-ene-QDs achieved excellent adsorptive capture percentages of Arsenic ions from sea, tap and wastewater providing 94.61, 95.21 and 94.38% from contaminated samples with 5 mg L−1 Arsenic ions. Therefore, Bi-ene-QDs can be categorized as an unprecedented and efficient nanosorbent for the successful removal of Arsenic ions pollution from various wastewater matrices with > 90.0% efficiency.

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Molten Bismuth–Bismuth/Zinc Oxide Composites for High-Temperature Thermal Energy Storage

Vladut,

Lincu,

Berger

et al. 2024

Inorganics

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Thermal energy storage is at the leading edge of various applications, including waste heat recovery, solar storage and zero-energy buildings. Phase change materials (PCMs) can be utilized to store heat through reversible solid–liquid phase transitions. PCMs provide high energy storage capacity at a constant temperature. The volume change during the phase transition, on the other hand, causes inconsistency in crystallization and leakage, increasing the system’s complexity and shortening the lifetime of these materials. These shortcomings can be diminished by impregnation in a porous matrix or encapsulation with an inert shell, resulting in shape-stabilized PCMs that maintain their macroscopic shape during phase change. The synthesis and properties of Bi/ZnO nanocomposites were investigated in order to obtain shape-stabilized phase change materials. All samples consisted of metallic Bi and oxide, doped with 1–3% at. zinc. Heat storage capacities between 31 and 49 Jg−1 were obtained, depending on the mass fraction of the metal. All samples had good thermal reliability, retaining their heat storage properties after 50 consecutive heating–cooling cycles. An average oxide layer thickness of 75–100 nm is sufficient to prevent the molten metal leakage at temperatures above its melting point, resulting in shape-stabilized PCMs.

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Bismuth-mesoporous silica-based phase change materials for thermal energy storage

Cited by 3 publications

References 46 publications

Flame-Retardant and Form-Stable Phase-Change Composites Based on Phytic Acid/ZnO-Decorated Surface-Carbonized Delignified Wood with Superior Solar-Thermal Conversion Efficiency and Improved Thermal Conductivity

Flame-Retardant and Form-Stable Phase-Change Composites Based on Phytic Acid/ZnO-Decorated Surface-Carbonized Delignified Wood with Superior Solar-Thermal Conversion Efficiency and Improved Thermal Conductivity

Effective capture of As(V) from water by a facile one step hydrothermal synthesized of 2-D bismuthene quantum dots nanosorbent

Molten Bismuth–Bismuth/Zinc Oxide Composites for High-Temperature Thermal Energy Storage

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