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|
| Type |
Poster Presentation |
| Area |
Electrochemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
ELEC.P-612 |
| Subject |
Effective Formation of WO3 Nanoparticle/Bi2S3 Nanowire Heterojunction for Improved Photoelectrochemical Performance |
| Authors |
jihyeon Kim, KI MIN NAM*
Department of Chemistry, Mokpo National University, Korea
|
| Abstract |
A well-defined WO3/Bi2S3 heterojunction comprised of single-crystalline Bi2S3 nanowire (Bi2S3NW) layers on top of the WO3 nanoparticles (WO3NP) was synthesized via an in-situ hydrothermal reaction. The single-crystalline Bi2S3 nanowires were uniformly grown and directly anchored on the surface of the WO3 nanoparticle layer. Compared to those of the other Bi2S3 electrodes, the resulting WO3NP/Bi2S3NW heterojunction showed enhanced photoelectrochemical (PEC) activity. The origin of this enhanced PEC activity is mainly attributed to the enhancement of charge separation on the Bi2S3 layer, due to the effective photogenerated electron transfer from the Bi2S3 conduction band to that of WO3. The uniform heterojunction interface with less interfacial defects generated through the in-situ growth method also leads to lower resistance at the interface between the different domains. Furthermore, the single-crystalline longitudinal structure of the Bi2S3 nanowires can provide a direct electrical pathway through a single domain of nanowires. |
| E-mail |
namkimin@mokpo.ac.kr |
|
121st General Meeting of the KCS