Ceria‐Containing Ordered Mesoporous Silica: Synthesis, Properties, and Applications

Abstract

Structural architecture and unique physical, chemical, thermal, and mechanical properties of ordered mesoporous silica materials can be tuned. High flexibility of silica materials can provide good support for different metal nanoparticles, metal oxides, and organic functional groups. The properties of silica materials can vary to a great extent by introducing the optimum amount of metal species co‐doped, dispersed or composites with the silica mesostructure. The present study investigates the deposition of CeIII/IV/CeO2 on the silica surface by using different wet chemical engineering methods, illustrates the syntheses of those ceria–silica or metal doped ceria–silica nanomaterials and offers clear picture of the influence that incorporated ceria concentration has on the properties of the support material. Ceria–silica based ordered mesoporous materials can have numerous applications is also discussed in this article, emphasizing its use as a heterogeneous catalyst in particular.

Smart Design of Self-Assembled Mesoporous α-FeOOH Nanoparticles: High-Surface-Area Sorbent for Hg2+ from Wastewater

“…The BET surface areas for samples SMF-4, SMF-6, and SMF-8 were 86.6, 152.4, and 74.8 m 2 g –1 , and the pore volumes of these materials were 0.078, 0.089, and 0.116 cm 3 g –1 respectively. Pore size distributions of these samples were calculated utilizing a nonlocal density functional theory (NLDFT) model (SiO 2 as a reference). − SMF-4 material has an average pore diameter of ca. 2.59 nm whereas SMF-6 has an average pore diameter of ca.…”

Na-Ce-modified-SBA-15 as an effective and reusable bimetallic mesoporous catalyst for the sustainable production of biodiesel

“…Nevertheless, the basic strength of CeO2 is less than that of alkali metals [21,42]. This fact together with the presence of ceria crystalline phases evidenced by XRD and TEM could explain why the amount of basic sites on the 20Ce/SBA-15 catalyst is small despite the high metal loading [30].…”

Reductant‐Free Synthesis of Silver Nanoparticles by Functionalized Hollow Doughnut Mesoporous Silica Nanoparticles for Preparation of Catalytic Nanoreactor

“…The N 2 adsorption/desorption isotherms and pores size distribution of hd‐MSN and Ag/hd‐MSN‐NH 2 are shown in Figure . It can be seen that both samples showed similar IV isotherms and typical H1 hysteresis loops, indicating the properties of a typical mesoporous material . And the surface area values were 645 m 2 g −1 and 450 m 2 g −1 corresponding to hd‐MSN and Ag/hd‐MSN‐NH 2 , respectively.…”