Related Experiment Video
Updated: May 27, 2025
11:13
Creating Sub-50 Nm Nanofluidic Junctions in PDMS Microfluidic Chip via Self-Assembly Process of Colloidal Particles
Published on: March 13, 2016
10.6K
Two-Dimensional Nanofluidic Membranes with Nepenthes-Inspired Superstructures toward Boosting Solar-Driven Ionic
You-Peng Fang1, Sheng-Hua Liu1, Yan-Hong Liu1
1School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China.
ACS Omega
|February 17, 2025
Summary
This study introduces novel superstructured graphene oxide/MXene membranes (SGMMs) that enhance photothermal-driven ion transport by mimicking natural structures. These membranes offer improved wetting, directional flow, and efficient energy harvesting from solar energy and ions.
Area of Science:
- Materials Science
- Nanotechnology
- Environmental Science
Background:
- Harnessing solar energy and ions from the ocean for energy requires efficient artificial membranes.
- Existing photothermal nanofluidic membranes face challenges with transport interruption and heat dissipation.
- The peristome surface of Nepenthes inspires improved membrane design through its microstructures for water transport.
Purpose of the Study:
- To develop advanced nanofluidic membranes for efficient photoinduced transmembrane ion transport.
- To address limitations of current membranes, such as interrupted flow and heat loss.
- To leverage biomimicry for enhanced membrane performance in exploiting oceanic resources.
Main Methods:
- Conformal layer-by-layer assembly to create superstructured positively charged graphene oxide (PGO)/MXene membranes (SGMMs).
- Fabrication of membranes with varied topographies, including superstructures and planar controls (PGMM).
- Characterization of membrane wetting, surface microfluidics, and ion transport under photothermal conditions.
Main Results:
- SGMMs exhibit anion-selective transport with enhanced channel capacity compared to planar membranes.
- Superstructured membranes show superior wetting and directional surface microfluidic transport.
- SGMMs demonstrate significantly improved photothermal evaporation efficiency due to larger surface area and regulated flow.
Conclusions:
- Membrane topography design is crucial for optimizing nanofluidic transport and photothermal energy conversion.
- SGMMs offer a promising platform for exploiting solar energy and ionic resources from the ocean.
- This work highlights the potential of bio-inspired superstructures in advanced membrane applications.
