Sandwich-Structured Photothermal Wood for Durable Moisture Harvesting and Pumping | Zendy

Yutang Li | Zendy; Honglei Chen | Zendy; Ran Deng | Zendy; MingBang Wu | Zendy; HaoCheng Yang | Zendy; Seth B. Darling | Zendy

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Sandwich-Structured Photothermal Wood for Durable Moisture Harvesting and Pumping

Author(s) -

Yutang Li,

Honglei Chen,

Ran Deng,

MingBang Wu,

HaoCheng Yang,

Seth B. Darling

Publication year - 2021

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.1c08901

Subject(s) - materials science , moisture , photothermal therapy , evaporation , desiccant , desorption , durability , absorption (acoustics) , chemical engineering , adsorption , composite material , condensation , nanotechnology , organic chemistry , chemistry , thermodynamics , physics , engineering

Moisture capture coupled with photothermal regeneration provides an alternative and sustainable way to acquire fresh water. Composite moisture absorbents based on hygroscopic salts are environmentally friendly, economically feasible, and of high efficiency but suffer from the unavoidable desiccant leakage during absorption and evaporation-induced salt accumulation on material surfaces during desorption. In this study, we develop a superhydrophobic-hydrophilic-hydrophobic photothermal wood embedded with CaCl 2 o promote the durability of the absorbents. The sandwich structure serves as a liquid/vapor gate allowing vapor transport but forbidding liquid permeation, enabling the condensation and evaporation within the wood. Beyond moisture harvesting, the sandwich-structured photothermal wood exhibits potential in indoor dehumidification by pumping the moisture through an absorption-desorption cycle.

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