Journal
DALTON TRANSACTIONS
Volume 45, Issue 26, Pages 10530-10538Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6dt00335d
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Funding
- National Natural Science Foundation of China [51304256, 21576034]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20130191130003]
- State Key Laboratory of Coal Mine Disaster Dynamics and Control [2011DA105287-FW201504]
- International S&T Cooperation Projects of Chongqing [CSTC2013gjhz90001]
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MnOx-decorated MgAl layered double oxide (M-LDO) was fabricated via merging of memory effect and anion intercalation, accompanied by the reduction/calcination process. The as-obtained nanocomposites were characterized by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (XRD) and N-2 adsorption-desorption. To clarify the detailed formation mechanism, optimized calcination temperature/time and temperature for methyl orange (MO) adsorption were investigated. Adsorption experiments showed that the adsorption behaviour fitted well with a Langmuir isotherm and pseudo-second-order model, and the maximum adsorption capacity calculated from the Langmuir model was 555.55 mg g(-1). The adsorption process was exothermic and spontaneous in nature. Moreover, the used adsorbent could be regenerated for at least five cycles (94% removal retained) through a thermal procedure, indicating that the M-LDO hybrid is a promising adsorbent with promising ability to remove anionic dye pollutants from wastewater.
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