Well-ordered organic–inorganic hybrid layered manganese oxide nanocomposites with excellent decolorization performance

• Published in: Journal of solid state chemistry Vol. 198; pp. 371 - 378
• Main Authors: Zhou, Junli, Yu, Lin, Sun, Ming, Ye, Fei, Lan, Bang, Diao, Guiqiang, He, Jun
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 01.02.2013; Elsevier
• Subjects: ABSORPTION; COMPOSITE MATERIALS; Cross-disciplinary physics: materials science; rheology; Decolorization; Exact sciences and technology; HYBRIDIZATION; Layered manganese oxide; MANGANESE OXIDES; MATERIALS SCIENCE; Methods of nanofabrication; METHYL ORANGE; Nanoscale materials and structures: fabrication and characterization; NANOSCIENCE AND NANOTECHNOLOGY; NANOSTRUCTURES; Organic–inorganic hybrid; Other topics in nanoscale materials and structures; OXIDATION; Physics; POLLUTANTS; Self-assembly; SURFACE AREA; Well-ordered; Well-ordered; Decolorization; Layered manganese oxide; Organic–inorganic hybrid; Nanoplate; Nanosheet; Organic conductors; Oxide layer; Hybrid material; Specific surface area; Pillared structure; Organic-inorganic hybrid; Self-assembled layers; Molybdenum; Self-assembly; Manganese oxides; Organic-inorganic hybrid materials; Nanocomposites; Waste water purification; Methyl orange
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2012.10.030

Well-ordered organic–inorganic hybrid layered manganese oxide nanocomposites (CTAB-Al-MO) with excellent decolorization performance were prepared through a two-step process. Specifically, the MnO2 nanosheets were self-assembled in the presence of CTAB, and subsequently pillared with Keggin ions. The obtained CTAB-Al-MO with the basal spacing of 1.59nm could be stable at 300°C for 2h and also possesses high total pore volumes (0.41cm³g−1) and high specific BET surface area (161m2g−1), which is nine times larger than that of the pristine (19m2g−1). Possible formation process for the highly thermal stable CTAB-Al-MO is proposed here. The decolorization experiments of methyl orange showed that the obtained CTAB-Al-MO exhibit excellent performance in wastewater treatment and the decolorization rate could reach 95% within 5min. Well-ordered organic–inorganic hybrid LMO nanocomposites (CTAB-Al-MO) with excellent decolorization performance were prepared through a two-step process. Specifically, the MnO2 nanosheets were self-assembled by CTAB, and subsequently pillared with Keggin ions. [Display omitted] ► A two-step synthesis method was used to prepare the CTAB-Al-MO. ► The CTAB-Al-MO has the large basal spacing and high specific BET surface area. ► The thermal stability of the well-ordered CTAB-Al-MO could obviously improve. ► The CTAB-Al-MO exhibits excellent oxidation and absorption ability to remove organic pollutants.