期刊
MATERIALS RESEARCH BULLETIN
卷 108, 期 -, 页码 176-186出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2018.09.009
关键词
Photodegradation; core-shell structure; Z-scheme structure; g-C3N4; L-cysteine
资金
- Research Project of Hubei Provincial Department of Education [D20171405]
- Natural Science Foundation of Hubei Province of China [2013CFA085]
- National Natural Science Foundation of China [51472081]
- International Science & Technology Cooperation Program of China [2016YFE0124300]
In this work, we aimed to develop a novel method for the target preparation of multicomponent composites Au@CdS/g-C3N4 towards high visible light photocatalytic activity with the assistance of L-cysteine biomolecules. Through the interaction of L-cysteine biomolecules with Au nanoparticles and g-C3N4 bulks, CdS layer were in-situ precipitated on the surface of Au nanoparticles to form core-shell structure Au@CdS and Z-scheme structure Au@CdS-g-C3N4 with good interface bonding in composites. By taking advantage of this feature, the highest reaction rate constant of 8%Au@CdS/g-C3N4 for methyl orange dye and phenol degradation was 3.08- and 1.48-folds higher than pure g-C3N4 bulks, which was ascribed to the strong interaction between different substances for efficient charges transferring and separation as evidenced by the studies of X-ray photoelectron spectroscopy, steady-state and transient photoluminescence spectroscopy. This work highlights the utilization of biomolecules for the target preparation of composites and its application on environmental remediation.
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