Journal
SCIENCE CHINA-MATERIALS
Volume 63, Issue 10, Pages 1948-1956Publisher
SCIENCE PRESS
DOI: 10.1007/s40843-020-1491-x
Keywords
interface-enhanced distillation; enlarged evaporation surfaces; weakened intermolecular forces; fast evaporation; energy and time savings
Categories
Funding
- Ministry of Science and Technology of China [2016YFA0200200, 2017YFB1104300]
- National Science Foundation of China [51673026, 51433005, 21805160]
- NSFC-STINT [21911530143]
- Beijing Natural Science Foundation [2152028]
- NSFC-MAECI [51861135202]
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Traditional distillation (TD) is generally an energy-intensive and inefficient process for separation and purification of liquids in chemical industries. Herein, we developed an interface-enhanced distillation (IED) by employing a well-arranged membrane of reduced graphene oxide (rGO) sheet arrays embedded with silicon dioxide nanofibres (rGO/SiO2) as the evaporation intermediate layer on the liquid surface. This IED enlarges the evaporation surfaces and weakens the intermolecular forces on the liquid/solid/gas interfaces, realizing the fast and even low temperature fraction collection with less energy consumption. The IED delivers evaporation rates 200%-300% times that of TD, meanwhile having an energy saving of 40%-60% and a time saving of 50%-70% for diverse liquid feeds. In atmospheric IED manner, high boiling point and perishable organics can be collected with high quality at a temperature lower than their boiling points. This IED provides an innovative strategy for highly efficient distillation in chemical industries.
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