Abstract
Porous materials have been widely used in many fields, but the large-scale synthesis of materials with controlled pore sizes, pore volumes, and wall thicknesses remains a considerable challenge. Thus, the controllable synthesis of porous materials is of key general importance. Herein, we demonstrate the “pearl milk tea” freeze-drying method to form porous materials with controllable pore characteristics, which is realized by rapidly freezing the uniformly distributed template-containing precursor solution, followed by freeze-drying and suitable calcination. This general and convenient method has been successfully applied to synthesize various porous phosphate and oxide materials using different templates. The method is promising for the development of tunable porous materials for numerous applications of energy, environment, and catalysis, etc.
Highlights
Porous materials with unique porous structures and high surface areas have been widely used in many fields such as energy, catalysis, adsorption, separation, etc[1,2,3,4,5,6,7,8,9]
The pore size of the produced porous material is determined by the size of the applied template, whereas the pore distance and wall thickness are tuned using the ratio of template
Polymethyl methacrylate (PMMA), which has been widely used in the aforementioned colloidal crystal template process, was introduced
Summary
Porous materials with unique porous structures and high surface areas have been widely used in many fields such as energy, catalysis, adsorption, separation, etc[1,2,3,4,5,6,7,8,9]. Highly ordered reverse replica porous materials can be obtained using the colloidal crystal template method, the controllability of the pore distance, porosity and the large-scale production are partly restricted. The reason for this restriction is the constantly closest packing geometry of the colloidal template beads with a specific size[9], as shown in Supplementary Figure S1. In the current approach, the template beads (pearl) are initially freely dispersed in the precursor solution (milk tea) before they are suddenly frozen and solidified Parameters such as the distance between the template beads and the template-to-precursor ratio can be controlled to finely and widely control the porous characteristics of the product
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
