Synthesis and characterization of cube-like Ag@AgCl-doped TiO2/fly ash cenospheres with enhanced visible-light photocatalytic activity
Source abstract
Abstract
Abstract A cube-like Ag@AgCl-doped TiO 2 /fly ash cenosphere composite (denoted Ag@AgCl–TiO 2 /fly ash cenospheres) was successfully synthesized via a two-step approach. The as-prepared catalysts were characterized by scanning electron microscopy, X-ray diffraction, diffuse reflectance ultraviolet–visible spectroscopy, Brunauer–Emmett–Teller, and X-ray photoelectron spectroscopy. The photocatalytic experiment showed that the rhodamine B degradation rate with Ag@AgCl–TiO 2 /fly ash cenospheres was 1.56 and 1.33 times higher than that with AgCl–TiO 2 /fly ash cenospheres and Ag@AgCl, respectively. The degradation ratio of rhodamine B with Ag@AgCl–TiO 2 /fly ash cenospheres was nearly 100% within 120 min under visible light. Analysis of active species indicated that O 2 − and h + dominated the reaction, and OH participated in the photocatalytic reactions as an active species. A mechanism for the photocatalytic degradation by the Ag@AgCl–TiO 2 /fly-ash cenospheres was also proposed based on the experimental results.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
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