| 초록 |
Photocatalysts are attracting as a way to solve environmental pollution problems because they do not generate by-products other than hydrogen while using sunlight. When a photocatalyst receives light, electrons are excited, and when the bandgap contains the redox potential of hydrogen and oxygen, a redox reaction occurs, decomposing water to produce hydrogen and oxygen. CdS is a photocatalyst that decomposes water well thanks to its proper bandgap location. However, photolysis occurs and the catalyst lifetime is short. In order to solve this problem, in this study, CdS is covered with WS2 nanosheets as a co-catalyst. WS2 has a smaller bandgap than CdS and is stable in water. The performance of the catalyst was measured by GC and the physical properties were measured by XRD, PL, and Raman. The stability of the catalyst was measured by ICP. |
