期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 4, 页码 5173-5181出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b04814
关键词
Transparent; Superhydrophobic; Cellulose nanopaper; Self-cleaning; Solar cell
资金
- National Key R&D Program of China [2017YFD0600204]
Wood-derived sustainable materials like cellulose fibers have received increased attention for replacing nonrenewable substrates in emerging high-tech applications. Herein, for the first time, we fabricated a superhydrophobic (static contact angle = 159.6 degrees, sliding angle = 5.8 degrees), highly transparent (90.2%) and hazy (46.5%) nanopaper made of TEMPO-oxidized cellulose nanofibrils (TOCNF) and polysiloxanes. The original TOCNF nanopaper endowed excellent optical and mechanical properties; the constructed pearl-necklace-like polysiloxanes fibers on the nano paper surface by further silanization significantly improved water repellency (70.7% for static contact angle) and toughness (118.7%) of the TOCNF nanopaper. Our proposed novel nanopaper that simultaneously achieved light-management and self-cleaning capabilities not only led to an enhancement (10.43%) in the overall energy conversion efficiency of the solar cell by simply coating but also recovered most of the photovoltaic performance losses due to dust accumulation by a self-cleaning process, indicating its potential application in solar cells. This study on cellulose based multifunctional substrates provided new insights into the future development of sustainable functional devices.
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