Chi-sang Wong. / Bibliography: leaves 45-49 / Thesis (M.Ph.)--Chinese University of Hong Kong, 1985

by Diao, Zhenyu = 模板辅助下制备有生物形态的MoO₃化合物以及它对降解甲基紫的催化作用 / 刁振玉. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references. / Abstracts in English and Chinese. / by Diao, Zhenyu = Mo ban fu zhu xia zhi bei you sheng wu xing tai de MoO₃ hua he wu yi ji ta dui jiang jie jia ji zi de cui hua zuo yong / Diao Zhenyu. / Abstract --- p.I / 摘要 --- p.II / Acknowledgement --- p.III / Table of contents --- p.IV / List of figures --- p.VII / List of tables --- p.X / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Biomorphic materials --- p.1 / Chapter 1.2 --- Semiconductor catalysts --- p.2 / Chapter 1.3 --- Methyl violet --- p.3 / Chapter 1.4 --- Photocatalysis --- p.4 / Chapter 1.5 --- Synthesis of biomorphic catalysts --- p.8 / Chapter 1.6 --- Objectives and thesis layout --- p.10 / References / Chapter Chapter 2 --- Methodology and Instrumentation --- p.17 / Chapter 2.1 --- Sample preparation --- p.17 / Chapter 2.1.1 --- Synthesis --- p.17 / Chapter 2.1.2 --- Paper templates and precursors --- p.18 / Chapter 2.2 --- Characterization --- p.18 / Chapter 2.2.1 --- Scanning electron microscope (SEM) --- p.18 / Chapter 2.2.2 --- X-ray powder diffractometry (XRD) --- p.20 / Chapter 2.2.3 --- Fourier transform infrared (FTIR) spectroscopy --- p.21 / Chapter 2.2.4 --- Differential thermal analysis (DTA) --- p.23 / Chapter 2.2.5 --- Thermogravimetric analysis (TGA) --- p.24 / Chapter 2.2.6 --- Ultraviolet-Visible spectroscopy (UV-Vis) --- p.24 / Chapter 2.3 --- Catalytic performance --- p.26 / References --- p.26 / Chapter Chapter 3 --- Results Introduction --- p.30 / Chapter 3.1 --- Paper template --- p.31 / Chapter 3.1.1 --- Thermal properties --- p.31 / Chapter 3.1.2 --- Composition of paper template --- p.32 / Chapter 3.1.3 --- Morphology of paper --- p.35 / Chapter 3.2 --- Chemical precursors --- p.40 / Chapter 3.3 --- Infiltrated paper templates --- p.43 / Chapter 3.4 --- Biomorphic products --- p.46 / Chapter 3.4.1. --- Influence of annealing temperature --- p.46 / Chapter 3.4.1.1 --- Phase and composition --- p.46 / Chapter 3.4.1.2. --- Surface morphology --- p.48 / Chapter 3.4.2 --- Effects of annealing durations --- p.50 / Chapter 3.4.2.1 --- Phase and composition --- p.50 / Chapter 3.4.2.2 --- Surface morphology --- p.54 / Chapter 3.5 --- Formation mechanism --- p.56 / References --- p.57 / Chapter Chapter 4 --- Catalytic performance Introduction --- p.59 / Chapter 4.1 --- Degradation of MV under visible light --- p.60 / Chapter 4-2 --- Effects of the UV irradiation on MV --- p.64 / Chapter 4-3 --- Degradation of MV dye using M0O3 under UV light --- p.65 / Chapter 4.4 --- Mechanism of photocatalysis --- p.69 / References --- p.70 / Chapter Chapter 5 --- Conclusions and future work --- p.72 / Chapter 5.1 --- Conclusions --- p.72 / Chapter 5.2 --- Future work --- p.73 / References --- p.74

Thesis (Ph. D.)--University of Oregon, 2004. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 213-252). Also available for download via the World Wide Web; free to University of Oregon users.

The electronic structure of a variety of metal-heteroatom multiply bonded complexes, including some active alkyne metathesis catalysts, have been investigated using He(I) and He(II) ultraviolet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy (XPS) and Fenske-Hall molecular orbital calculations. Utilizing this electronic structure information, confirmation of the proposed mechanism for the alkyne metathesis reaction which involves formation of a metallacyclobutdienyl intermediate was ascertained. Also, the important relationships between metallatetrahedral and metallacyclobutadienyl complexes, both of which have been mentioned as possible intermediates in the alkyne metathesis reaction and for which examples have been prepared and isolated, are discussed in significant detail. In the final chapters the electronic structure of some corresponding metal-nitrogen triply bonded complexes are discussed as well as the results probing the charge distribution in metal-heteroatom multiply bonded systems as determined by the XPS experiment.

The electronic structures and bonding interactions in the syn and anti isomers of Mo₂S₄(edt)₂²⁻ (edt = ethanedithiolato, (SCH₂CH₂S)²⁻) were examined and compared through Fenske-Hall and extended Huckel molecular orbital calculations. The electronic structures of a hypothetical closed isomer and the fragment MoS₃(edt)³⁻ were calculated as well. A molybdenum-molybdenum bonding interaction accounts for the diamagnetism of the complexes and is important in determining the relative stabilities of the isomers (syn > closed > anti). The structure of the syn isomer of (P(C₆H₅)₄)₂W₂S₄(edt)₂ was determined by X-ray crystallography. The compound crystallizes in the space group P2₁/n with a = 16.126(7)A, b = 25.03(1)A, c = 13.021(6)A, β = 101.73(4)°, and Z = 4. The calculated and observed densities are 1.755 and 1.757 g cm⁻³. Full-matrix least squares refinement of the 7414 data with Fₒ² > 3σ(Fₒ²) gave R = 0.039 and R(w) = 0.046. Each tungsten atom is ligated by five sulfur atoms in approximate tetragonal-pyramidal geometry. The W-W distance is 2.862(1)A, indicating a metal-metal bond. The average W-S(terminal) distance is 2.144(2)A, the average W-S(bridging) is 2.328(2)A, and the average W-S(edt) distance is 2.404(2)A. A variety of sulfur compounds, including hydrogen sulfide, aromatic and aliphatic thiols, cysteine, and bisulfite reduced MoO(TTP)OR, oxoalkoxotetratolylporphinatomolybdenum(V) (R = H, CH₃, C₂H₅, C₅H₁₁, MoO(TTP)), to the corresponding Mo(IV) species, MoO(TTP). The kinetics of the redox reaction between MoO(TTP)OC₂H₅ and RSH (R = C₂H₅, C₆H₅) were monitored at ambient temperature. The rate law d(Mo(IV))/dt = k₂(Mo(V))(RSH), with k₂ = 8.0 x 10⁻¹³ M⁻¹sec⁻¹ for C₂H₅SH and k₂ = 8.2 M⁻¹sec⁻¹ for C₆H₅SH describes the kinetic data. Sulfur compounds also reduced MoO₂(TTP). The kinetics of the redox reaction of the novel compound MoO(TTP)HSO₃ were monitored in chloroform solution at ambient temperature. The rate law d(Mo(IV))/dt = k₂(Mo(V))² with k₂ = 3.4 x 10² M⁻¹sec⁻¹ describes the kinetic data. Oxidation of MoO(TTP) to Mo(V) occurs in the presence of air. Oxidation catalysis by oxomolybdenum porphyrins was demonstrated for the substrates C₂H₅SH, C₆H₅SH, and HSO₃⁻. Mechanisms for these reactions are proposed.

"January 1967." / Includes bibliographical references. / v, 238 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1967

Thesis (Ph.D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1967. / "January 1967." Includes bibliographical references.

Thesis (Ph. D.)--University of Oregon, 2000. / Title from title screen. Paging within document: xvii, 167 p. : ill. Includes vita and abstract. Includes bibliographical references (p. 149-167).

Thesis (Ph. D.)--University of Oregon, 2000. / Includes vita and abstract. Includes bibliographical references (p. 149-167). Also available for download via the World Wide Web; free to University of Oregon users.

Adviser: Kenneth M. Doxsee. xvii, 167 p. / A print copy of this title is available through the UO Libraries under the call number: SCIENCE QD412.M7 B35 2000 / The chemistry of three organometallic systems in water was studied with the goal of understanding more fully the reactivity of organometallic complexes in aqueous environments. Molybdocene complexes were found to catalyze C-H bond activation reactions in water. The catalytically active solutions were prepared from the molybdocene dimer [Cp