Catalysis Today
Catalysis Today
5 years ago

Photoelectrodeposition Effect of Lanthanum oxide-Modified Ceria Particles on The Removal of Lead (II) Ions from Water

Photoelectrodeposition Effect of Lanthanum oxide-Modified Ceria Particles on The Removal of Lead (II) Ions from Water
The photocatalytic capabilities of La2O3 incorporated in CeO2 for the removal of Pb(II) ions in water are reported in this work. La2O3–modified CeO2 particles are prepared by a solid-state reaction method at calcination temperature of 1000°C and 1400°C. The x-ray diffraction result demonstrates a solid solution Ce0.9La0.1O1.95 phase coexisting with the CeO2 matrix phase (Ce0.9La0.1O1.95–CeO2) obtained at a calcination of 1400°C, while the mixed La2O3/La(OH)3–CeO2 phase is obtained at 1000°C. The UV-photocatalytic activity for Pb(II) ion removal of the La2O3–modified CeO2 particles is significantly higher than that of pure CeO2. Ce0.9La0.1O1.95–CeO2 particles show stronger visible light absorption capacity and higher ability of photoelectrodeposition for the Pb(II) ion removal than the mixed La2O3/La(OH)3–CeO2 particles and pure CeO2. The high photocatalytic activity is supported by a strong photoluminescence signal from the Ce0.9La0.1O1.95–CeO2 particles, suggesting a high efficiency of photogenerated charge separation. A formation of p-type Ce0.9La0.1O1.95 and n-type CeO2 heterojunctions in Ce0.9La0.1O1.95–CeO2 particles also promote photogenerated charge transfer and efficiency restraining recombination of the charges.

Publisher URL: www.sciencedirect.com/science

DOI: S0920586117307629

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.