Mono-(Ni, Au) and Bimetallic (Ni-Au) Nanoparticles-Loaded ZnAlO Mixed Oxides as Sunlight-Driven Photocatalysts for Environmental Remediation
Monica Pavel, Liubovi Cretu, Catalin Negrila, Daniela C. Culita, Anca Vasile, Razvan State, Ioan Balint, Florica Papa
TL;DR
Researchers developed a new photocatalyst using metal nanoparticles on a ZnAlO matrix that efficiently breaks down pollutants like bisphenol A under sunlight.
Contribution
The study introduces a novel synthesis method for bimetallic Ni-Au nanoparticles on ZnAlO for enhanced photocatalytic performance under sunlight.
Findings
Bimetallic Ni-Au@ZnAlO achieved 95% bisphenol A degradation after 180 minutes under simulated solar irradiation.
The bimetallic system showed better performance than monometallic Ni@ZnAlO and Au@ZnAlO due to efficient charge separation and narrower band gap.
NPs@ZnAlO nanocomposites inherited a nanoplate-like morphology from LDH precursors.
Abstract
A facile and versatile strategy to obtain NPs@ZnAlO nanocomposite materials, comprising controlled-size nanoparticles (NPs) within a ZnAlO matrix is reported. The mono-(Au, Ni) and bimetallic (Ni-Au) NPs serving as an active phase were prepared by the polyol-alkaline method, while the ZnAlO support was obtained via the thermal decomposition of its corresponding layered double hydroxide (LDH) precursors. X-ray diffraction (XRD) patterns confirmed the successful fabrication of the nanocomposites, including the synthesis of the metallic NPs, the formation of LDH-like structure, and the subsequent transformation to ZnO phase upon LDH calcination. The obtained nanostructures confirmed the nanoplate-like morphology inherited from the original LDH precursors, which tended to aggregate after the addition of gold NPs. According to the UV-Vis spectroscopy, loading NPs onto the ZnAlO support…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAdvanced Photocatalysis Techniques · Layered Double Hydroxides Synthesis and Applications · Covalent Organic Framework Applications