Fast Self-Healing Superhydrophobic Thermal Energy Storage Coatings Fabricated by Bio-Based Beeswax and Artificially Cultivated Diatom Frustules

Sun，Haoyang1,2; Li，Tao1,2; Lei，Fan2; Lyu，Sha2; Yang，Ye2; Li，Bin2; Han，He2; Wu，Bangyao2; Huang，Jintao2; Zhang，Chentao2; Li，Dandan2; Sun，Dazhi2

2021

10.1021/acsami.1c14065

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Diatom frustules (DFs) with delicate hierarchical pores and a large specific surface area are extracted from artificially cultured diatoms, showing their utilization potential as shape-stabilized phase change materials (ss-PCMs). Herein, we successfully prepared a fully biomass-based ss-PCM, superhydrophobic thermal energy storage (STES) coating by employing beeswax (BW) as phase change materials (PCMs) and DFs as supporting materials via a facile spraying method. DFs can adsorb as much as 65 wt % BW without leakage, accompanied with a high heat storage capacity of 112.57 J/g. The thermal stability test demonstrates that the DF/BW coating can undergo 500 heating-freezing cycles with the reduction of the phase change enthalpy being less than 5%. Simultaneously, the DF also endows BW with a higher thermal degradation temperature (from ∼200 to ∼250 °C). In addition, the DF/BW coating shows superhydrophobicity due to the incorporation of the low surface energy of BW and the micro/nanostructures of DFs. This superhydrophobic surface can quickly and repeatedly recover its excellent water repellency through a simple heat treatment (80 °C, 20 min) after being damaged by a water impact or strong acid and alkali corrosion. This self-healing ability can effectively overcome the poor durability of traditional superhydrophobic materials. Our research can expand the application of DFs in the field of ss-PCMs and guide the preparation of durable superhydrophobic surfaces with rapid self-healing performance.

diatom frustules fast self-healing superhydrophobicity thermal energy storage coatings

EI ; SCI

英语

通讯

Guangdong Provincial Key Laboratory Program from the Department of Science and Technology of Guangdong Province[2021B1212040001]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000709458200073

AMER CHEMICAL SOC

20214211041369

Coatings ; Corrosion ; Hydrophobicity ; Phase change materials ; Self-healing materials ; Storage (materials) ; Surface properties ; Thermal energy

Metals, Plastics, Wood and Other Structural Materials:415 ; Storage:694.4 ; Coating Materials:813.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

2-s2.0-85117165435

Scopus

1.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin,Heilongjiang,150001,China
2.Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices,Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Sun，Haoyang,Li，Tao,Lei，Fan,et al. Fast Self-Healing Superhydrophobic Thermal Energy Storage Coatings Fabricated by Bio-Based Beeswax and Artificially Cultivated Diatom Frustules[J]. ACS Applied Materials & Interfaces,2021,13(40):48088-48100.

Sun，Haoyang.,Li，Tao.,Lei，Fan.,Lyu，Sha.,Yang，Ye.,...&Sun，Dazhi.(2021).Fast Self-Healing Superhydrophobic Thermal Energy Storage Coatings Fabricated by Bio-Based Beeswax and Artificially Cultivated Diatom Frustules.ACS Applied Materials & Interfaces,13(40),48088-48100.

Sun，Haoyang,et al."Fast Self-Healing Superhydrophobic Thermal Energy Storage Coatings Fabricated by Bio-Based Beeswax and Artificially Cultivated Diatom Frustules".ACS Applied Materials & Interfaces 13.40(2021):48088-48100.