Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Integrated Evaporator for Efficient Solar-Driven Interfacial Steam Generation

Journal Article · · Nano Letters
 [1];  [2];  [3];  [2];  [4];  [2];  [2];  [5];  [4];  [4];  [6];  [7];  [2]
  1. Soochow University, Jiangsu (China); University of California, Riverside, CA (United States); University of Science and Technology of China, Anhui (China); University of California, Riverside
  2. University of California, Riverside, CA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. University of Science and Technology of China, Anhui (China)
  5. Soochow University, Jiangsu (China)
  6. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  7. Soochow University, Suzhou, Jiangsu (China)
Solar-driven interfacial steam generation is a promising technique for clean water production as it can minimize thermal loss by localizing solar-to-heat conversion at the air/liquid interface. Here we report an integrated solar-evaporator by partially growing two-dimensional polypyrrole microsheets within a melamine foam through chemical vapor polymerization. These microsheets can induce multiple light reflections within the foam, enable omnidirectional light absorption, provide abundant surfaces to promote heat transfer, and achieve spatially-defined hydrophobicity to facilitate vapor escape. Meanwhile, the inherent hydrophilicity of the bottom part of the foam promotes spontaneous upward water transport and suppresses heat loss. The composite foam exhibits an excellent apparent evaporation rate of ~2 kg/(m2·h) and solar-to-vapor efficiency of ~91%. Here, the combined advantages of large surface area, high efficiency, low cost, all weather application, excellent durability, and scalable manufacturing make our integrated design promising for fabricating large-scale solar steam generation systems that are suitable for practical clean water production.
Research Organization:
Univ. of California, Riverside, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1639101
Journal Information:
Nano Letters, Journal Name: Nano Letters Journal Issue: 8 Vol. 20; ISSN 1530-6992; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (33)

Magnetochromatic Thin-Film Microplates journal November 2014
A Bioinspired, Reusable, Paper-Based System for High-Performance Large-Scale Evaporation journal March 2015
Hydrophobic Light-to-Heat Conversion Membranes with Self-Healing Ability for Interfacial Solar Heating journal July 2015
Smart Gating Multi-Scale Pore/Channel-Based Membranes journal June 2016
Mushrooms as Efficient Solar Steam-Generation Devices journal May 2017
Hierarchical Graphene Foam for Efficient Omnidirectional Solar-Thermal Energy Conversion journal August 2017
Multilayer Polypyrrole Nanosheets with Self‐Organized Surface Structures for Flexible and Efficient Solar–Thermal Energy Conversion journal March 2019
Self-Contained Monolithic Carbon Sponges for Solar-Driven Interfacial Water Evaporation Distillation and Electricity Generation journal January 2018
Carbon-Based Sunlight Absorbers in Solar-Driven Steam Generation Devices journal January 2018
Bio-Inspired Evaporation Through Plasmonic Film of Nanoparticles at the Air-Water Interface journal May 2014
Direct solar steam generation system for clean water production journal March 2019
A 3D Photothermal Structure toward Improved Energy Efficiency in Solar Steam Generation journal June 2018
Measuring Conversion Efficiency of Solar Vapor Generation journal August 2019
Scalable, eco-friendly and ultrafast solar steam generators based on one-step melamine-derived carbon sponges toward water purification journal April 2019
Hydrogels as an Emerging Material Platform for Solar Water Purification journal October 2019
Space-Confined Seeded Growth of Black Silver Nanostructures for Solar Steam Generation journal December 2018
Tailoring Nanoscale Surface Topography of Hydrogel for Efficient Solar Vapor Generation journal March 2019
Synergistic Energy Nanoconfinement and Water Activation in Hydrogels for Efficient Solar Water Desalination journal June 2019
Nanoparticles Heat through Light Localization journal June 2014
Solar steam generation by heat localization journal July 2014
Reinventing the energy modelling–policy interface journal February 2016
3D self-assembly of aluminium nanoparticles for plasmon-enhanced solar desalination journal April 2016
Solar-driven interfacial evaporation journal November 2018
Highly efficient solar vapour generation via hierarchically nanostructured gels journal April 2018
Artificial phototropism for omnidirectional tracking and harvesting of light journal November 2019
Materials for solar-powered water evaporation journal March 2020
Integrative solar absorbers for highly efficient solar steam generation journal January 2018
A salt-rejecting floating solar still for low-cost desalination journal January 2018
Solar absorber material and system designs for photothermal water vaporization towards clean water and energy production journal January 2019
Tailoring surface wetting states for ultrafast solar-driven water evaporation journal January 2020
Graphene oxide-based efficient and scalable solar desalination under one sun with a confined 2D water path journal November 2016
Architecting highly hydratable polymer networks to tune the water state for solar water purification journal June 2019
Plasmon-enhanced solar vapor generation journal May 2019