Metal oxide nanoparticles incorporated mesoporous silica nanospheres for oxygen scavenging

Ahmad，Ishaq1; Lo，Po Shan1; Khaleed，Abdul1; Djurišic，Aleksandra1; He，Yanling1; Ng，Alan Man Ching2

10.1117/12.2609512

2022

Conference on Oxide-Based Materials and Devices XIII at SPIE OPTO Conference

0277-786X

1996-756X

978-1-5106-4875-3

Proceedings of SPIE - The International Society for Optical Engineering

12002

JAN 22-FEB 28, 2022

null,null,ELECTR NETWORK

1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA

SPIE-INT SOC OPTICAL ENGINEERING

To avoid foodborne illness, maintaining the prolonged food freshness and real-time food quality/health monitoring are the challenges to be addressed in this era. Development of active food packaging is an advancing research for real-time food health monitoring. In this study, mesoporous silica nanospheres (MSNs) have been synthesized with controlled size (>100nm) and porosity by using modified Stöber method. These MSNs are capable of adsorbing oxygen by physisorption thus can be used as oxygen scavengers for food packaging materials to extend shelf life of the food products. Furthermore, this study aims to incorporate active metal oxide nanoparticles (MNPs) in the pores of synthesized MSNs to extend its applications as oxygen scavenging and detection to avoid oxygen produced food degradation. The MNPs with an average size of <10 nm were successfully synthesized with stable dispersions. The active MNPs including SnO2, Fe2O3, ZnO and TiO2 (<10 nm) have been incorporated in the pores of MSNs. The MNPs were incorporated in the MSNs using i) Synthesis of MNPs followed by in-situ synthesis of MSNs, ii) synthesis of MSNs first followed by in-situ synthesis of MNPs in the pores of MSNs and, (iii) Synthesis of MSNs and MNPs separately and mixing of stable suspension of both MSNs and MNPs to achieve the best results for oxygen scavenging. The results indicated that first route was more successful for embedding the MNPs in the pores of MSNs. The oxygen scavenging efficiency of the MNPs incorporated MSNs were evaluated.

Mesoporous Silica Nanosphere Metal Oxide Nanoparticles Oxygen Scavenger

其他

英语

CPCI-S ; EI

Engineering ; Instruments & Instrumentation ; Optics

Engineering, Electrical & Electronic ; Instruments & Instrumentation ; Optics

WOS:000836322900023

20222312194915

Food products ; Hematite ; II-VI semiconductors ; Mesoporous materials ; Metal nanoparticles ; Metals ; Nanospheres ; Packaging materials ; Silica ; Titanium dioxide ; Zinc oxide

Minerals:482.2 ; Packaging Materials:694.2 ; Semiconducting Materials:712.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Food Products:822.3 ; Solid State Physics:933

2-s2.0-85131224442

Scopus

1.Department of Physics,The University of Hong Kong,Pokfulam Road,Hong Kong
2.Department of Physics,Southern University of Science and Technology,Shenzhen,No. 1088, Xueyuan Road, Nanshan District, Guangdong,China

Ahmad，Ishaq,Lo，Po Shan,Khaleed，Abdul,et al. Metal oxide nanoparticles incorporated mesoporous silica nanospheres for oxygen scavenging[C]. 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA:SPIE-INT SOC OPTICAL ENGINEERING,2022.