Coupled hybrid nanoparticles for improved dispersion stability of nanosuspensions: a review
- PDF / 5,572,235 Bytes
- 31 Pages / 547.087 x 737.008 pts Page_size
- 94 Downloads / 201 Views
REVIEW
Coupled hybrid nanoparticles for improved dispersion stability of nanosuspensions: a review Yanping Du
&
Xiao Yuan
Received: 20 May 2020 / Accepted: 13 August 2020 # Springer Nature B.V. 2020
Abstract Dispersion stability of nanosuspensions attracts increasing attention in the past decades due to its significant effect on the thermal performance and phase behaviors of suspensions applied in various areas. The review of DLVO, steric stability, and depletion theories along with the detailed analysis of intermolecular forces was provided to elucidate the stability mechanism of hybrid nanoparticles in nanosuspensions. On this basis, mixed approach and coupled approach for achieving superior dispersion stability of hybrid nanosuspensions were specifically introduced. By using the coupled approach, the performance of phase behaviors can be largely promoted, preventing the nanoparticle aggregation as a result of the chemical bond formed in the fabrication process. The improved stability of coupled hybrid nanosuspensions enables the feasibility of the applications in heat and mass transfer and phase behavior–related fields, which are extensively reviewed in the current study. It is revealed that the thermal conductivity and phase behavior of hybrid nanoparticles are the dominant factors that need to be examined to improve abilities in heat transfer and colloidal control. With the development of fabrication techniques, it is promising that highly stabilized nanosuspensions such as GO nanoplatelets could be incorporated with drugs or genes for achieving targeted delivery, controlled release Y. Du (*) : X. Yuan (*) China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 201306, China e-mail: [email protected] e-mail: [email protected]
of drugs, and DNA transfer in complicated conditions. This indicates the value of stability promotion of nanosuspensions composed by coupled hybrid nanoparticles. Keywords Hybrid nanoparticles . Dispersion stability . Nanosuspensions . Coupled approach . Phase behavior
Introduction Nanosuspensions composed of nanoparticles and phase change materials (PCMs) has attracted more and more attention due to their extraordinary thermal and optical properties including high thermal conductivity, high heat capacity, and large light absorption rate, etc. Therefore, these nanosuspensions can be widely used in various areas, such as thermal energy storage (TES) for peak shifting of electricity, waste heat recovery from industrial sectors, photocatalysis for energy, and environmental applications (i.e., fuel production, water treatment, and air purification). It is reported that the high thermal/exergy efficiency and excellent photocatalytic performance are significantly affected by the stability of the nanosuspensions (Kim et al. 2012). However, nanoparticles have been found to tend to aggregate due to the high specific surface energy and high specific surface area, which in turn severely restrains their applications in diverse scenarios. Consequently, it is crucial to inve
Data Loading...
