Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 236, Issue -, Pages 304-313Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2018.05.033
Keywords
Environmental catalysis; NO oxidation; MOF; rGO; Photocatalysis
Funding
- National Natural Science Foundation of China [NSFC 21761142011, 91645102, 51502174]
- PCSIRT [IRT1269]
- Singapore National Research Foundation [NRF2017NRF-NSFC001-007]
- China Postdoctoral Science Foundation [2018M630981]
- Shenzhen Peacock Plan [827-000113, KQTD2016053112042971]
- Educational Commission of Guangdong Province [2016KCXTD006, 2016KSTCX126]
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A mesocrystal ZnCo2O4 on reduced graphene oxide (rGO) nano-composite was successfully synthesized by a low temperature annealing of bimetal organic frameworks on rGO. In this nano-composite, rGO nanosheets worked as the two-dimensional support to significantly improve the dispersity and conductivity of nano-composites. The mesoporous ZnCo2O4 crystal derived from ZnCo-ZIF worked as the main active sites with the optimized Zn/Co ratio to ensure an ideal valence band structure as well as enhanced visible-light harvesting properties. The as prepared rGO@ZnCo2O4 nano-composites showed a remarkable activity in visible-light photocatalytic NO oxidation with the conversion of 83.8% under visible light and 92.6% under simulated solar light. It also exhibited a higher stability than that of N-doped TiO2, thereby making this nano-composite as a promising and stable photocatalyst for environmental remediation.
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