Novel acridone-modified MCM-41 type silica: Synthesis, characterization and fluorescence tuning

• Maximilian Hemgesberg,
• Gunder Dörr,
• Yvonne Schmitt,
• Andreas Seifert,
• Zhou Zhou,
• Robin Klupp Taylor,
• Sarah Bay,
• Stefan Ernst,
• Markus Gerhards,
• Thomas J. J. Müller and
• Werner R. Thiel

Beilstein J. Nanotechnol. 2011, 2, 284–292, doi:10.3762/bjnano.2.33

• absorption emerges at 1613 cm−1. The redshift of the absorption frequency is conclusive with respect to the weakened C=O double bond caused by the electron donation from the carbonyl unit to the scandium(III) cation, which is also evident in the UV–vis absorption of MCM-ACR (see below in Figure 9). According

• 0.17 nm point resolution. The UV–vis absorption and fluorescence of the precursor were measured using a Perkin–Elmer Lambda 900 and a Horiba Jobin–Yvon Fluorolog 3-22 τ in steps of 0.1 nm and 1.0 nm, respectively, the SiO2-cuvettes used had a width of 1.0 cm. Solid state UV–vis measurements were

• ). Overlay of the solid state UV-vis (top) and fluorescence (bottom) spectra of MCM-ACR, MCM-ACR + Sc(OTf)3 and pure Sc(OTf)3 (fluorescence excitation wavelength λex. = 400 nm). UV–vis-absorption intensities are not normalized to a given value; fluorescence has been normalized to an intensity of 1.0. Sc(OTf

Twofold role of calcined hydrotalcites in the degradation of methyl parathion pesticide

• Alvaro Sampieri,
• Geolar Fetter,
• María Elena Villafuerte-Castrejon,
• Adriana Tejeda-Cruz and
• Pedro Bosch

Beilstein J. Nanotechnol. 2011, 2, 99–103, doi:10.3762/bjnano.2.11

• the ability to regenerate the layered structures of HTs by the “memory effect” in the presence of anions released during MP degradation. Degradation of MP: Figure 1 shows the UV–vis absorption spectra of the solution after stirring MP with the Mg–Al, Zn–Al and Ni–Al mixed oxides (see Supporting

Enhanced visible light photocatalysis through fast crystallization of zinc oxide nanorods

• Sunandan Baruah,
• Mohammad Abbas Mahmood,
• Myo Tay Zar Myint,
• Tanujjal Bora and
• Joydeep Dutta

Beilstein J. Nanotechnol. 2010, 1, 14–20, doi:10.3762/bjnano.1.3

• polar face. Degradation of methylene blue as a function of ln(C/C0) versus the time of exposure to light in the presence of ZnO nanorods synthesized by the conventional method (Sample 2 with surface area ≈ 47.54 cm2) and the fast crystallization method (surface area ≈ 33.74 cm2). Inset: UV–vis

• absorption spectra of ZnO nanorods grown by the conventional hydrothermal method and by microwave irradiation of comparable exposed surface area. Estimated effective area of ZnO nanorod surfaces on substrates of size 1 × 3 cm, grown at different reactant concentrations during the hydrothermal growth process