@article{luo_maggard_2006, title={Hydrothermal Synthesis and Photocatalytic Activities of SrTiO3-Coated Fe2O3 and BiFeO3}, volume={18}, ISSN={0935-9648 1521-4095}, url={http://dx.doi.org/10.1002/adma.200500109}, DOI={10.1002/adma.200500109}, abstractNote={Synthesis of SrTiO3-coated BiFeO3 (see Figure) and Fe2O3 metal-oxide particles has been performed using low-temperature hydrothermal techniques. The coated materials suggest a promising new and general strategy for the sensitization of UV-active metal oxide photocatalysts to visible light.}, number={4}, journal={Advanced Materials}, publisher={Wiley}, author={Luo, J. and Maggard, P. A.}, year={2006}, month={Feb}, pages={514–517} } @article{yan_luo_dube_sefat_greedan_maggard_2006, title={Spin-Gap Formation and Thermal Structural Studies in Reduced Hybrid Layered Vanadates}, volume={45}, ISSN={0020-1669 1520-510X}, url={http://dx.doi.org/10.1021/ic0604563}, DOI={10.1021/ic0604563}, abstractNote={Reduced layered M(C4H4N2)V4O10 ((I, M = Co; II, M = Ni; III, M = Zn); C4H4N2 = pyrazine, pyz) hybrid solids were synthesized via hydrothermal reactions at 200−230 °C, and their structures determined by single-crystal X-ray diffraction (Cmcm, No. 63, Z = 4; a = 14.311(2), 14.2372(4), 14.425(1) Å; b = 6.997(1), 6.9008(2), 6.9702(6) Å; and c = 11.4990(8), 11.5102(3), 11.479(1) Å; for I, II, and III, respectively). All three solids are isostructural and contain V4O102- layers condensed from edge- and corner-shared VO5 square pyramids. A single symmetry-unique V atom is reduced by 1/2 electron (on average) and bonds via its apical oxygen atom to interlayer M(pyz)2+ chains. Magnetic susceptibility measurements show a strong temperature dependence and a Curie constant that is consistent with two randomly localized spins per V4O102- formula for III. Further, the unusual discovery of a remarkably well-defined transition to a singlet ground state, as well as formation of a spin gap, is found for III at 22(1) K. The temperature-dependent electrical conductivities show apparent activation energies of 0.36 (I), 0.46 (II), and 0.59 eV (III). During heating cycles in flowing N2, the samples exhibit weight losses corresponding to the removal of predominantly pyrazine, pyrazine fragments, and CO2 via reaction of pyrazine with the vanadate layer. The complete removal of pyrazine without loss of crystallinity is found for well-ground samples of I and III. The SEM images of I and II after heating at 400−500 °C show relatively intact crystals, but at 600 °C further structural collapse results in the formation of macropores at the surfaces.}, number={13}, journal={Inorganic Chemistry}, publisher={American Chemical Society (ACS)}, author={Yan, Bangbo and Luo, Junhua and Dube, Paul and Sefat, Athena S. and Greedan, John E. and Maggard, Paul A.}, year={2006}, month={Jun}, pages={5109–5118} } @article{maggard_yan_luo_2005, title={Pillared hybrid solids with access to coordinatively unsaturated metal sites: An alternative strategy}, volume={44}, ISSN={["1521-3773"]}, DOI={10.1002/anie.200462715}, abstractNote={A layered effect: Replacement of pyrazine (A) with Co- or Ni-coordinated 2-pyrazinecarboxylate (pzc; B) between neutral AgReO4 layers (red and blue polyhedra) yields M(pzc)2(H2O)2AgReO4 (M=Co (shown) or Ni). This novel strategy is aimed at pillared solids with coordinated H2O that can be reversibly removed without causing structural collapse to give coordinatively unsaturated Ni and Co sites.}, number={17}, journal={ANGEWANDTE CHEMIE-INTERNATIONAL EDITION}, author={Maggard, PA and Yan, BB and Luo, JH}, year={2005}, pages={2553–2556} } @article{luo_alexander_wagner_maggard_2004, title={Synthesis and characterization of ReO4-containing microporous and open framework structures}, volume={43}, ISSN={["1520-510X"]}, DOI={10.1021/ic049609h}, abstractNote={A microporous and an open framework structure, [Cu2(pzc)2(H2O)2ReO4] (I) and [Cu(pzc)(H2O)ReO4]·2H2O (II) (pzc = 2-pyrazinecarboxylate), respectively, have been prepared using hydrothermal methods and characterized using IR, TGA, and X-ray diffraction (I Pnma, No. 62, Z = 4, a = 7.4949(9) Å, b = 24.975(3) Å, c = 9.141(1) Å; II P21/c, No. 14, Z = 4, a = 8.5878(9) Å, b = 12.920(1) Å, c = 9.741(1) Å, β = 92.830(2)°). I and II crystallize as red and blue solids, respectively, and each contains chains constructed from alternating Cu(pzc)2/ReO4 oxide-bridged metal sites. The bidentate pzc ligand further bridges each −Cu−O−Re−O− chain to adjacent chains, via the Cu sites, to form a 3D net in I, with ellipsoidal channels that are ∼3.3−4.7 Å × 12.5 Å, and in II, stacked layers of square nets with H2O-filled cavities that are ∼4.4 × 5.1 Å. Local ReO4- groups, a component of common oxidation catalysts, are directed at the channels and cavities of each structure, respectively. Thermogravimetric analysis indicates that I loses up to 64% of its H2O content before decomposition at 225 °C, while II loses ∼100% of its H2O content by 265 °C.}, number={18}, journal={INORGANIC CHEMISTRY}, author={Luo, JH and Alexander, B and Wagner, TR and Maggard, PA}, year={2004}, month={Sep}, pages={5537–5542} }