- Title
- Facile synthesis of cerium oxide nanoparticles decorated flower-like bismuth molybdate for enhanced photocatalytic activity toward organic pollutant degradation
- Creator
- Li, Shijie; Hu, Shiwei; Jiang, Wei; Liu, Yu; Zhou, Yingtang; Liu, Jianshe; Wang, Zhaohui
- Relation
- Journal of Colloid and Interface Science Vol. 530, p. 171-178
- Publisher Link
- http://dx.doi.org/10.1016/j.jcis.2018.06.084
- Publisher
- Academic Press
- Resource Type
- journal article
- Date
- 2018
- Description
- One of the great challenges in the field of photocatalysis is to develop novel photocatalysts with excellent solar-light-harvesting capacity and separation efficiency of photo-induced charge. Herein, novel CeO₂/Bi₂MoO₆ heterojunctions were fabricated through in-situ precipitation of CeO₂ nanoparticles (size: ~26 nm) on the surface of flower-like Bi₂MoO₆ superstructures (diameter: 2.1-3.5 µm) by a simple method. The as-prepared photocatalysts were systematically characterized by a range of techniques. The photocatalytic degradation of rhodamine B (RhB) dye, methyl orange (MO) dye and tetracycline (TC) antibiotic by this novel photocatalyst was investigated under visible-light irradiation. The CeO₂/Bi₂MoO₆ heterojunction with a CeO₂/Bi₂MoO₆ weight ratio of 0.05 (0.05Ce-Bi) exhibited the highest photocatalytic activity with the RhB degradation efficiency of 100% in 75 min, which was considerably higher than those of pristine CeO₂ (26.8%) and Bi₂MoO₆ (80.3%) as well as their physical mixtures (74.8%). The more efficient separation of electron-hole pairs was identified as the primary reason of the enhanced photocatalytic activity. Moreover, the synthesized material maintained satisfactory activity even after 6 recycling runs, indicating its high photocatalytic stability. Therefore, our finding offers a new avenue for development of stable and efficient heterojunction photocatalysts for environmental purification.
- Subject
- CeO₂; Bi₂MoO₆; heterojunction; visible-light-driven; antibiotics
- Identifier
- http://hdl.handle.net/1959.13/1409074
- Identifier
- uon:35936
- Identifier
- ISSN:0021-9797
- Rights
- © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
- Language
- eng
- Full Text
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