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Title: Synthesis of bimetallic core-shell nanoparticles for photocatalysis
Authors: Tee, Hui Min
Keywords: Engineering::Materials
Issue Date: 2022
Publisher: Nanyang Technological University
Source: Tee, H. M. (2022). Synthesis of bimetallic core-shell nanoparticles for photocatalysis. Final Year Project (FYP), Nanyang Technological University, Singapore.
Abstract: The ongoing energy and environmental issues have always been the major roadblocks to progressing towards environmental sustainability, the fundamental of long-term growth. Photocatalysis can be regarded as a potential solution to the existing issues, with the catalysts playing a crucial role in the photocatalytic HER reaction. Unfortunately, the problems of photocatalysts includes the widespread application of Pt-based catalysts is hampered by its scarcity and high cost, as well as the practicality of bimetallic core-shell nanoparticles as catalysts, and difficulty in producing evenly distributed, monodispersed core-shell nanoparticles as catalysts. As a result, several efforts have been undertaken to design a higher efficiency photocatalyst. Although it is simple to study the photocatalytic process, however, novel bimetallic core-shell catalysts are seldom discovered. Herein, this study aims to advance beyond previous studies by developing a one-pot thermal decomposition method to synthesise a small size distribution and proximity close to monodispersed Ag@Ni bimetallic core-shell NPs with catalytic and magnetic functions through the monitored growth of the Ni-shells and Ag-cores. In addition, this report will investigate the controlled approach of particle size of Ag@Ni bimetallic core-shell NPs as well as how their optical, magnetic, and catalytic performance can be affected by the shell-thickness of the NPs. For comparison, size-controlled noble Ag NPs as well as magnetic transition Ni NPs will also be synthesised using similar procedure. Furthermore, through simple reflux treatment of the as-prepared monometallic and bimetallic NPs with GCN nanosheets in solvent, the photocatalytic ability will be examined. Results obtained from the photocatalytic HER revealed that the synthesised Ag@Ni bimetallic core-shell NPs improved photocatalytic performances and can be employed as an outstanding catalyst to produce high purity hydrogen to meet the growing needs for renewable energies.
Schools: School of Materials Science and Engineering 
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MSE Student Reports (FYP/IA/PA/PI)

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