Journal
CERAMICS INTERNATIONAL
Volume 43, Issue 3, Pages 3072-3079Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.11.116
Keywords
Nanostructures; Oxide; Semiconductors; Photoluminescence spectroscopy; Heterostructures
Categories
Funding
- Korea Research Fellowship Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2015H1D3A1062507]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) of the Republic of Korea [20164030201070]
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20164030201070]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20164030201070] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2015H1D3A1062507] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Improvement in the catalytic activity of nanostructured cerium oxides (CeOx) was attained by incorporating in situ generated heteroatom-(N and S)-doped carbon quantum dots/reduced graphene oxide (HDCQD@RGO) nanohybrid catalyst for the degradation of organic pollutants. The CeOx-HDCQD@RGO nanohybrid catalyst was synthesized by a facile, one-pot hydrothermal eco-friendly process. The HDCQD plays a vital role to improve the interaction between CeOx and RGO and function as a sensitizer for the electron-transfer process with CeOx. The size of CeOx and HDCQD are 10 nm and 5 nm, respectively. The nanostructured CeOx possesses multiple oxygen vacancies; this helps to generate the active oxygen and hydroxyl radicals. The active hydroxyl radical generation by the photocatalytic process with the help of nanostructured CeOx results in the improved photodegradation of organic pollutants. In addition, the prepared CeOx-HDCQD@RGO nanohybrid catalyst exhibits an improved water oxidation reaction. The CeOx-HDCQD@RGO nanohybrid performs as an excellent bifunctional catalyst for energy and environmental applications. The method presented here is a facile and environmentally friendly, scalable synthesis of the highly efficient catalyst.
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