Removals of aqueous sulfur dioxide and hydrogen sulfide using CeO2-NiAl-LDHs coating activated carbon and its mix with carbon nano-tubes
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
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AbstractCe-doped NiAl/layered double hydroxide was coated at activated carbon by urea hydrolysis method (CeO2-NiAl-LDHs/AC) in one pot, which was characterized by X-ray diffraction, infrared spectra, field emission scanning electron microscope and electrochemical techniques. CeO2-NiAl-LDHs/AC shows good uptake for aqueous sulfur dioxide (483.09mg/g) and hydrogen sulfide (181.15mg/g), respectively at 25°C. Meanwhile, the electrochemical removals of aqueous sulfur dioxide and hydrogen sulfide were respectively investigated at the mix of CeO2-NiAl-LDHs/AC and carbon nano-tubes modified homed paraffin-impregnated electrode. Both sulfur dioxide and hydrogen sulfide could be effectively oxidized to sulfuric acid at 1.0V in alkaline aqueous solution. © 2015 Elsevier B.V.
SponsorsThis work was supported by the National Natural Science Foundation of China (NSFC, U140710231, 21076054 and 21174001); Natural Science Important Foundation of Educational Commission of Anhui Province (2010AJZR-85, 2011AJZR-87). Study Foundation of New Product and Technology of Anhui Economic and Information Technology Commission (2012AHST0797). Hefei University of Technology: Graduate Teaching Reform Research Fund (106033049), National College Student Innovation Fund (2014CXCY321 and 2014CXCY349).