He Yanling, Khaleed Abdul, Lo Po Shan, Ahmad Ishaq, Ching Ng Alan Man, Djurišić Aleksandra B
Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong SAR, China.
Core Research Facilities, Southern University of Science and Technology, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, P. R. China.
ACS Omega. 2023 Jun 5;8(24):21689-21695. doi: 10.1021/acsomega.3c01242. eCollection 2023 Jun 20.
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 nanoparticles and different atomic layer deposition (ALD) coatings (FeO 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.
铁基材料是最常用的氧气清除剂之一。在此，我们研究了介孔二氧化硅纳米球（MSN）负载的铁基清除剂，如FeO纳米颗粒和不同的原子层沉积（ALD）涂层（FeO和Fe）。我们发现清除剂的性能是可用的布鲁诺尔-埃米特-泰勒表面积与清除剂组成之间复杂相互作用的结果，渗透的纳米颗粒与Fe-ALD涂层的组合产生了最佳性能。当使用基于葡萄糖的MSN处理来进一步提高氧气清除能力时，Fe-ALD涂层表现出最佳性能，具有126.8 mL/g的高氧气吸附容量。Fe的ALD沉积是一种将铁基氧气清除剂引入不同载体的通用方法，并且它可以促进清除剂与不同类型包装的整合，因为沉积可以在150°C的低温下进行。
