The Capture and Catalytic Conversion of CO₂ by Dendritic Mesoporous Silica‐Based Nanoparticles

Abstract

Dendritic mesoporous silica nanoparticles own three‐dimensional center‐radial channels and hierarchical pores, which endows themselves with super‐high specific surface area, extremely large pore volumes, especially accessible internal spaces, and so forth. Dissimilar guest species (such as organic groups or metal nanoparticles) could be readily decorated onto the interfaces of the channels and pores, realizing the functionalization of dendritic mesoporous silica nanoparticles for targeted applications. As adsorbents and catalysts, dendritic mesoporous silica nanoparticles‐based materials have experienced nonignorable development in CO2 capture and catalytic conversion. This comprehensive review provides a critical survey on this pregnant subject, summarizing the designed construction of novel dendritic mesoporous silica nanoparticles‐based materials, the involved chemical reactions (such as CO2 methanation, dry reforming of CH4), the value‐added chemicals from CO2 (such as cyclic carbonates, 2‐oxazolidinones, quinazoline‐2,4(1H,3H)‐diones), and so on. The adsorptive and catalytic performances have been compared with traditional silica mesoporous materials (such as SBA‐15 or MCM‐41), and the corresponding reaction mechanisms have been thoroughly revealed. It is sincerely expected that the in‐depth discussion could give materials scientists certain inspiration to design brand‐new dendritic mesoporous silica nanoparticles‐based materials with superior capabilities towards CO2 capture, utilization, and storage.

Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica

“…Moreover, SBA-15, being a representative mesoporous material, has garnered significant interest in adsorption, separation, and catalysis applications [ 32 , 33 , 34 , 35 , 36 , 37 ]. In light of the background of CBM application, it is necessary to utilize adsorbents with a high performance-to-cost ratio.…”

Enhancing Direct Electrochemical CO2 Electrolysis by Introducing A‐Site Deficiency for the Dual‐Phase Pr(Ca)Fe(Ni)O3−δ Cathode

“…[1,2] Numerous effective measures have been undertaken to curtail CO 2 emissions, such as improving energy efficiency, [3] developing clean energy, [4] and employing chemical engineering techniques to capture and utilize CO 2 . [5] The electrochemical method has garnered significant research interest as a promising strategy to mitigate CO 2 levels. Through the electrochemical reduction of CO 2 into valued carboncontaining chemicals, such as carbon monoxide (CO), methane, and methanol, not only are CO 2 emissions reduced, but the electrical energy produced from clean and renewable alternative energy sources is also stored.…”

Amine-Impregnated Dendritic Mesoporous Silica for the Adsorption of Formaldehyde

“…The co-condensation method is known for the short one-pot synthesis process and also can be recycled. However, it is hard to regulate the pH when adding an amine functional group during the synthesis and it is difficult to control the morphological particle shape as intended [ 23 , 24 ]. Therefore, in this work, we carried out experiments for the adsorption of formaldehyde using TEPA through the amine impregnation method, which demonstrated excellent performance.…”