Precursor design for efficient synthesis of large-pore, sulfur-doped ordered mesoporous carbon through direct pyrolysis

Abstract

The production of ordered mesoporous carbons (OMCs) can be achieved by direct pyrolysis of self-assembled polymers. Typically, these systems require a majority phase capable of producing carbon, and a minority...

Sulfonation-Induced Cross-Linking and Nanostructural Evolution of a Thermoplastic Elastomer for Ordered Mesoporous Carbon Synthesis: A Mechanistic Study

“…The use of SEBS for synthesizing OMCs was recently developed through a two-step process, including a sulfonation-induced cross-linking reaction and subsequent carbonization . Specifically, SEBS was submerged in concentrated sulfuric acid at increased temperatures, allowing the polyolefin matrix to become an efficient carbon precursor. − During this step, sulfonic acid groups are first attached to both the aromatic ring of the PS repeat unit and the PEB polymer backbone. Subsequently, the sulfonic acid groups in the PEB block can dissociate and then form unsaturated bonds that can undergo cross-linking through multiple reaction intermediates.…”

Research Experiences via Integrating Simulations and Experiments (REVISE): A Model Collaborative Research Project for Undergraduate Students in CO2 Sorbent Design

“…During carbonization, the templating agent can be thermally decomposed resulting in the formation of pores, while the precursor is converted to the final carbon framework. Another common OMC synthesis method is through hard-templating, which involves more steps than soft-templating and is described by several review papers. , While these conventional strategies require several processing steps and expensive precursors that have as of yet limited their commercial usage, preparation of OMCs with commodity precursors and simplified manufacturing pathways have recently been developed to improve their economic competitiveness and potentially allow for their commercial application. , As porous carbon is already used as a commercial sorbent material, the implementation of OMCs to field experiments and commercial applications has significant promise.…”

“… 34 , 35 While these conventional strategies require several processing steps and expensive precursors that have as of yet limited their commercial usage, preparation of OMCs with commodity precursors and simplified manufacturing pathways have recently been developed to improve their economic competitiveness and potentially allow for their commercial application. 36 , 37 As porous carbon is already used as a commercial sorbent material, the implementation of OMCs to field experiments and commercial applications has significant promise.…”

“…34,35 While these conventional strategies require several processing steps and expensive precursors that have as of yet limited their commercial usage, preparation of OMCs with commodity precursors and simplified manufacturing pathways have recently been developed to improve their economic competitiveness and potentially allow for their commercial application. 36,37 Moreover, incorporation of heteroatoms, such as nitrogen and sulfur, into the OMC framework can result in improved CO 2 capture performance. 38 For example, introducing nitrogen heteroatoms, with a pair of lone electrons, alters Lewis basicity of the carbon surface.…”

Reaction‐induced morphology control in block copolymers

“…However, in the presence of crosslinking, the mobility of the polymers to rearrange and develop their nanostructure is reduced, and disordering is introduced into the final nanostructure as a result. 87 Moreover, using chemical reactions to alter the nanostructure of BCP thin films can provide a new avenue for expanding the design space of a material system for various applications. 88 For instance, the development of complex geometries in polymer thin films at multiple length scales can further advance BCP-based patterning applications, but achieving this goal commonly relies on complex processing methods that have reduced control over intricate patterns.…”