Chachvalvutikul, Auttaphon, Luangwanta, Tawanwit, Pattisson, Samuel, Hutchings, Graham J.  ORCID: https://orcid.org/0000-0001-8885-1560 and Kaowphong, Sulawan
2021.
Enhanced photocatalytic degradation of organic pollutants and hydrogen production by a visible light-responsive Bi2WO6/ZnIn2S4 heterojunction.
Applied Surface Science
544
, 148885.
10.1016/j.apsusc.2020.148885
|
Preview |
PDF
- Accepted Post-Print Version
Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (1MB) | Preview |
Preview |
PDF
- Supplemental Material
Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (731kB) | Preview |
Abstract
In this work, we have reported the photocatalytic applications of the direct Z-scheme Bi2WO6/ZnIn2S4 heterojunction in the degradation of organic pollutants and the production of H2 gas. The nano-spherical shape of Bi2WO6 and porous structure of ZnIn2S4 particles, synthesized using cyclic microwave radiation method, facilitated the intimate interfacial contact of the heterojunction. Consequently, the photocatalytic activity of Bi2WO6/ZnIn2S4 towards degradation of salicylic acid (SA) and methylene blue (MB), the models of non-dye and dye organic pollutants, were maximized after introducing only 12.5%wt of Bi2WO6. Similarly, this photocatalyst demonstrated an enhancement in H2 production in comparison to the single-component photocatalysts. Furthermore, this photocatalyst maintained a high photoactivity after three repeated cycles for MB degradation and H2 production. The enhanced photo-efficacy of this heterojunction originates from the improved separation and transportation of photogenerated e-/h+ through a direct Z-scheme system. This was evidenced by electrochemical analyses and active species trapping experiments, combined with the consideration of reduction potential of reactive oxygen species.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI) |
| Publisher: | Elsevier |
| ISSN: | 0169-4332 |
| Date of First Compliant Deposit: | 5 January 2021 |
| Date of Acceptance: | 28 December 2020 |
| Last Modified: | 06 Nov 2024 14:00 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/137308 |
Citation Data
Cited 44 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
 |
Edit Item |
Altmetric
Altmetric