期刊
APPLIED SURFACE SCIENCE
卷 498, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2019.143840
关键词
ZnIn2S4; Plasmon; Photoelectrocatalysis; Photoelectrochemical sensing, micropollutants
类别
资金
- National Natural Science Foundation of China [41772264]
- Research Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection [SKLGP2019Z009]
- National Research Foundation of Korea [NRF-2015M3A7B 4050 424]
- Korea Research Fellowship Program (KRF) [2018H1D3A1A02074832]
- National Research Foundation of Korea [2018H1D3A1A02074832] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Au-decorated ZnIn2S4 plasmonic micro-architectures were synthesized through the hydrothermal method, followed by a citrate reduction process that eventually facilitates the formation of hierarchical microsphere porous morphologies for effective catalysis. An optimum amount of 2.5 wt% Au/ZnIn2S4 exhibits a high degree of photochemical conversion in both toxic organic dyes and antibiotics, compared to that exhibited by pristine ZnIn2S4. Photoluminescence and photocurrent density confirms the charge transfer mechanism, and the electron spin trapping confirms the formation of radical species. The improved photoelectrocatalytic performance is demonstrated by the rapid charge separation, transmission, and availability of more reactive species from localized Au/ZnIn2S4 surface plasmon resonance at an optimum bias voltage of 0.5 V. The designed sensor exhibits a reasonably high sensing ability with a low limit of detection (0.8 mu M) within the linear concentration range from 0.5 to 250 mu M. This research highlights the improved strategy for developing noble metal decorated ternary metal sulfides and synchronizes photoelectrochemical properties to extend its application as sensors and photoelectrocatalysts.
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