| 초록 |
Water vapor separation process becomes increasingly important in oil refinery and natural gas production. The separation process using membranes could offer low energy consumption and reusability. Here, we present a new strategy of efficiently separating water vapor from mixture gas using colloidal particle nested inverse opal (CPN-IO) structures, forming hierarchically developed nanochannels therein. We utilized uniformly created nanoscale void gap between the nested particle and the surrounding wall, which acts as both a confined space for water vapor condensation and a path for dry gas transport. The mechanism for selective separation of water vapor is based on water vapor condensation in the nanochannel and adsorption of condensed water on the wall of nanochannel coated with adsorption-induced surface of Poly(dopamine). The structural characteristics of CPN-IO structures such as highly uniform structural regularity and excellent interconnectivity of nanochannel facilitate fast gas transport and selective separation of condensable gas such as water vapor. |
