Iron-Based Oxygen Scavengers on Mesoporous Silica Nanospheres

作者：Yanling He, Abdul Khaleed, Po Shan Lo, Ishaq Ahmad, Alan Man Ching Ng, Aleksandra B. Djurišić · 发表于：ACS Omega · 年份：2023 · DOI：10.1021/acsomega.3c01242 · 被引用次数：9 · 研究领域：Catalytic Processes in Materials Science、Semiconductor materials and devices、Electrocatalysts for Energy Conversion

High Resolution Image Download MS PowerPoint Slide Iron-based materials are among the most commonly used oxygen scavengers. Here, we investigated the mesoporous silica nanosphere (MSN)-supported iron-based scavengers, such as FeO x nanoparticles and different atomic layer deposition (ALD) coatings (FeO x and Fe). We found that the scavenger performance is a result of a complex interplay between available Brunauer–Emmett–Teller surface area and the scavenger composition, with the combination of infiltrated nanoparticles and Fe-ALD coating resulting in the best performance. When the glucose-based treatment of MSN is used to further enhance oxygen scavenging capacity, Fe-ALD coating yields the best performance, with a high oxygen adsorption capacity of 126.8 mL/g. ALD deposition of Fe represents a versatile method to introduce Fe-based oxygen scavengers onto different supports, and it can facilitate the integration of scavengers with different types of packaging, as the deposition can be performed at a low temperature of 150 °C.