109,265 research outputs found
Affidavit of Florence Scrivner Toye re: transfer of Lease D, Carson Estate Company to Quan Bros., February 25, 1943
No full textDescribes transfer of Lease D with the Carson Estate Company from Florence Scrivner Toye to the Quan Bros. company; Quan Him Wong, George G. Quan. Signatures representing Florence Scrivner Toye, Harry G. Toye, Quan Him Wong, George G. Quan and Hamilton H. Cotton of the Carson Estate Company are included
[Affidavit] of Florence Scrivner Toye re: transfer of Lease D to Quan Bros., Carson Estate Company, January 6, 1943
No full textDescribes transfer of Lease D with the Carson Estate Company from Florence Scrivner Toye to the Quan Bros. company; Quan Him Wong, George G. Quan. No signatures on this document
Synergistic induced charge transfer switch by oxygen vacancy and pyrrolic nitrogen in MnFe2O4/g-C3N4 heterojunctions for efficient transformation of bicarbonate to acetate in photo-assisted MES
No full textInorganic carbon (HCO3-) was efficiently converted into acetate (204.4 ± 0.5 mM with a coulombic efficiency of 96 ± 3% over 24 days operation) in a photo-assisted microbial electrosynthesis system (MES) using a urea-treated MnFe2O4/g-C3N4 cathode and the nonphotosynthetic bacteria Serratia marcescens Q1. The remarkable photocatalytic performance of MnFe2O4/g-C3N4 heterojunction was resulted from the charge transfer mechanism switch (from type II to Z-scheme) induced by the synergistic effect of oxygen vacancies and pyrrolic N after urea treatment. The increased pyrrolic N was conductive to photoinduced electron transfer while the oxygen vacancies provided a higher fraction of surface-active sites for H2 evolution, which was metabolized in-situ with bicarbonate by S. marcescens Q1 to yield acetate via the Wood–Ljungdahl pathway. This study provides a simple and feasible strategy for switching the photocatalytic charge transfer in a spinel-based heterojunction and offers new insights for ingeniously synthesizing photocatalysts with high CO2 conversion in MES
Letter from [Minna A. Newman], Carson Estate Company to Mr. George G. Quan, February 25, 1943
No full textRefers to the transfer of Lease D from Florence Scrivner Toye to Quan Bros. Related affidavit is Item csudh_rsp_0551
A light-management film layer induces dramatically enhanced acetate production in photo-assisted microbial electrosynthesis systems
No full textA light-management system consisting of a Al-doped ZnO (AZO) film layer was combined for the first time with different bio-photocathodes (Serratia marcescens Q1 electrotroph immobilized on g-C3N4, MnFe2O4 or MnFe2O4/g-C3N4) to significantly enhance acetate production from bicarbonate in photo-assisted microbial electrosynthesis systems (MES). The AZO light-management system exhibiting optical properties independent of the light incident angle mitigated the shielding effect of light by electrotrophs, increasing light trapping and decreasing light reflection, ultimately allowing higher rates of photon absorption and redistributions of photons over the photo-active layers. As a result, more reducing equivalents as H2 produced up to 242% (g-C3N4/AZO-filter) and 543% (g-C3N4/AZO) increase in acetate production at coulombic efficiencies of 70% (g-C3N4/AZO-filter) and 81% (g-C3N4/AZO). The record high solar-to-acetate efficiency obtained with the MnFe2O4/g-C3N4/AZO biocathode was 3.20%. The light-management system proposed in this study opens a new promising way to construct efficient bio-photocathodes for inorganic carbon reduction in photo-assisted MES
Mode-II fracture behaviour of aerospace-grade carbon fibre/epoxy composites interleaved with thermoplastic veils
No full textThermoplastic veils based on Polyethylene-terephthalate (PET), Polyphenylene-sulfide (PPS) and Polyamide-12 (PA) fibres (∼10μm in diameter) were used to interlay unidirectional (UD), non-crimp fabric (NCF) and 5-Harness satin weave (5H) carbon fibre laminates. The PET and PPS veils remained in a fibrous form and the PA veils melted during the laminate curing process. The results of an end-loaded split test demonstrated significant improvements in the mode-II fracture performance in all cases. In general, interlaying thermoplastic veils was most efficient for toughening the UD laminates, with reduced improvements observed for the 5H and NCF laminates, respectively. The main toughening mechanism of the intact PET and PPS veils was thermoplastic fibre bridging. The melted PA veils mainly improved the fracture toughness of the epoxy at the mid-plane. The different toughening mechanisms of the veils, combined with different fracture mechanisms between the UD, NCF and 5H laminates, resulted in significantly different toughening levels
Efficient production of acetate from inorganic carbon (HCO3–) in microbial electrosynthesis systems incorporating Ag3PO4/g-C3N4 anaerobic photo-assisted biocathodes
No full textThe efficient production of acetate from HCO3− by the nonphotosynthetic bacterium Serratia marcescens Q1 is demonstrated in an anaerobic, photo-assisted, microbial electrosynthesis (MES) system incorporating a Ag3PO4/g-C3N4 biocathode. The Ag3PO4/g-C3N4 formed a Z-scheme photocatalytic heterojunction structure with enhanced redox capacity. The photocorrosion of Ag3PO4 was inhibited by the production of H2O2 in-situ, through water oxidation driven by the photogenerated holes on the Ag3PO4 valence band. The photoinduced electrons on the conduction band of g-C3N4 instead produced H2, which was metabolized by the Q1 electrotroph with HCO3− to produce acetate at a rate of 5.4 mM/d with a CEacetate of 93 % at a current density of 3.3 A/m2. The MES accumulated up to 81.0 mM with a CEacetate of 89 % over 16 days continuous operation. This study provides a sustainable and feasible strategy for inhibiting the photocorrosion of Ag3PO4 and thus achieve efficient acetate production from HCO3− in photo-assisted MESs biocathodes
Acetate production from inorganic carbon (HCO3-) in photo-assisted biocathode microbial electrosynthesis systems using WO3/MoO3/g-C3N4 heterojunctions and Serratia marcescens species
No full textThe efficient production of acetate from HCO3− is demonstrated in a photo-assisted microbial electrosynthesis system (MES) incorporating a WO3/MoO3/g-C3N4 heterojunction photo-assisted biocathode supporting Serratia marcescens Q1 electrotroph. The WO3/MoO3/g-C3N4 structured electrode consisting of a layer of g-C3N4 coated on graphite felt decorated with W/Mo oxides nanoparticles exhibited stable photocurrents, 4.8 times higher than the g-C3N4 electrode and acetate production of 3.12 ± 0.20 mM/d with a CEacetate of 73 ± 4 % and current of 2.5 ± 0.3 A/m2. Photo-induced electrons on the conduction bands of WO3/MoO3/g-C3N4 favoured hydrogen evolution, which was metabolized by S. marcescens with HCO3− to acetate, while the holes were refilled by the electrons travelling from the anode. Such mechanism reduced the interfacial resistances creating a supplementary driving force leading to higher acetate production. The biocompatible components of WO3/MoO3/g-C3N4 synergistically couple light-harvesting and further catalyze S. marcescens to acetate from HCO3−, providing a feasible strategy for achieving sustainable high rates of acetate production
Highly efficient and photostable conversion of bicarbonate to acetate by a pyrrolic nitrogen enriched Ag3PO4/g-C3N4 photocathode with an intermediate band level in photo-assisted microbial electrosynthesis systems
No full textA highly efficient and photostable acetate production from bicarbonate (HCO3−) reduction is demonstrated in a photo-assisted microbial electrosynthesis system (MES) using a pyrrolic nitrogen enriched Ag3PO4/g-C3N4 photocathode. Urea-treatment of the Ag3PO4/g-C3N4 photocathode synergistically improved the MES performance by up to 1.8 folds under visible light illumination, achieving acetate production of 9.6 mM/d with coulombic efficiency of 95%, negligible catalyst leaching, and solar-to-acetate efficiency of 1.15% over 12 days continuous operation. The photocorrosion of Ag3PO4 was efficiently inhibited by a two-step charge transfer process mediated by an intermediate band level introduced by oxygen-vacancies in the Ag3PO4 structure, which also facilitated light absorption and charge transfer through a Z-scheme mechanism, whereas the increased pyrrole N in the g-C3N4 provided supplementary active sites for direct and indirect (via H2) electron transfer to Serratia marcescens electrotroph. This study demonstrates the ingenious use of photocatalytic heterojunctions for achieving step-changes in the MES performance
Certificate of Identity, Quan Him Wong, August 31, 1928
No full textCertificate of identity for Quan Him Wong. Lease D with Carson Estate Company transferred from Florence Scrivner Toye to Quan Him Wong and George G. Quan
- …
