Author
Moses O. Adebajo
Other affiliations: University of Queensland, University of New South Wales
Bio: Moses O. Adebajo is an academic researcher from Queensland University of Technology. The author has contributed to research in topics: Catalysis & Benzene. The author has an hindex of 22, co-authored 46 publications receiving 2419 citations. Previous affiliations of Moses O. Adebajo include University of Queensland & University of New South Wales.
Topics: Catalysis, Benzene, Hydrotalcite, Zeolite, Raman spectroscopy
Papers
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TL;DR: In this paper, the synthesis and absorbing properties of a wide variety of porous sorbent materials have been studied for application in the removal of organics, particularly in the area of oil spill cleanup.
Abstract: This paper reviews the synthesis and the absorbing properties of the wide variety of porous sorbent materials that have been studied for application in the removal of organics, particularly in the area of oil spill cleanup. The discussion is especially focused on hydrophobic silica aerogels, zeolites, organoclays and natural sorbents many of which have been demonstrated to exhibit (or show potential to exhibit) excellent oil absorption properties. The areas for further development of some of these materials are identified.
987 citations
TL;DR: In this paper, the authors summarized the development of the use of layered double hydroxides (LDHs) and their derivatives as heterogeneous and recyclable catalysts/catalyst supports for various reactions in the period of 2005 to early 2010.
344 citations
TL;DR: In this article, a series of gold/ironoxide catalysts for catalytic combustion of formaldehyde were prepared by co-precipitation, and the catalysts were stable and remained active in the presence of moisture and are good substitutes for the noble metals (Pt, Pd) catalysts.
147 citations
TL;DR: In this article, carbon/montmorillonite (CMt) nanocomposites were synthesized by a hydrothermal carbonization of cellulose and montmorillonites (Mt), and the adsorption properties were evaluated by the removal of methylene blue (MB) from aqueous solutions.
142 citations
TL;DR: In this article, powder X-ray diffraction was performed on hydrotalcites with ZnAl-HT and showed that upon addition of the thermally activated hydroalcite to an aqueous phosphate solution, results in the uptake of phosphate anion from the solution.
Abstract: Hydrotalcites with phosphate in the interlayer were prepared at different pH values. At pH >11.0 (PO4)(3-) was the intercalated ionic species, whereas at pH < 11.0 a mixture of (PO4)(3-) and (HPO4)(2-) ions was intercalated. Powder X-ray diffraction shows that the hydrotalcite formed at pH 9.5 is poorly diffracting with a d-spacing of 11.9 angstrom; whereas the d(003) spacing for the phosphate interlayered hydrotalcite formed at pH 11.9 and 12.5 was 8.0 and 7.9 angstrom respectively. The addition of a thermally activated ZnAl-HT to a phosphate solution resulted in the uptake of the phosphate and the reformation of the hydrotalcite. Raman spectroscopy of the phosphate interlayered hydrotalcites shows that the interlayered anion is pH dependent and only above pH 11.9 is the orthophosphate anion intercalated. At lower pH, the monohydrogen phosphate anion is intercalated. Raman spectroscopy shows that upon addition of the thermally activated hydrotalcite to an aqueous phosphate solution, results in the uptake of phosphate anion from the solution. Copyright (C) 2006 John Wiley & Sons, Ltd.
95 citations
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TL;DR: In this article, a detailed analysis of the thermal expansion mechanism of graphite oxide to produce functionalized graphene sheets is provided, where it is shown that the decomposition rate of the epoxy and hydroxyl sites exceeds the diffusion rate of evolved gases, yielding pressures that exceed the van der Waals forces holding the graphene sheets together.
Abstract: A detailed analysis of the thermal expansion mechanism of graphite oxide to produce functionalized graphene sheets is provided. Exfoliation takes place when the decomposition rate of the epoxy and hydroxyl sites of graphite oxide exceeds the diffusion rate of the evolved gases, thus yielding pressures that exceed the van der Waals forces holding the graphene sheets together. A comparison of the Arrhenius dependence of the reaction rate against the calculated diffusion coefficient based on Knudsen diffusion suggests a critical temperature of 550 °C which must be exceeded for exfoliation to occur. As a result of their wrinkled nature, the functionalized and defective graphene sheets do not collapse back to graphite oxide but are highly agglomerated. After dispersion by ultrasonication in appropriate solvents, statistical analysis by atomic force microscopy shows that 80% of the observed flakes are single sheets.
3,340 citations
TL;DR: From a comprehensive literature review, it was found that some LCAs, in addition to having wide availability, have fast kinetics and appreciable adsorption capacities too.
3,163 citations
TL;DR: Generations Yi Ma,† Xiuli Wang,† Yushuai Jia,† Xiaobo Chen,‡ Hongxian Han,*,† and Can Li*,†
Abstract: Generations Yi Ma,† Xiuli Wang,† Yushuai Jia,† Xiaobo Chen,‡ Hongxian Han,*,† and Can Li*,† †State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy, 457 Zhongshan Road, Dalian 116023, China ‡Department of Chemistry, College of Arts and Sciences, University of Missouri-Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States
1,990 citations
TL;DR: This review critically identifies the shortcomings in current research on LDHs, such as the common weaknesses in the adopted methodology, discrepancies among reported results and ambiguous conclusions.
1,445 citations
1,432 citations