10 research outputs found
Factors Affecting the Photoelectrochemical Fixation of Carbon Dioxide with Semiconductor Colloids
No full textCarbon dioxide was reduced photocatalytically using aqueous CdS or ZnS colloids containing tetramethylammonium chloride to give the dimeric and tetrameric products namely, oxalate, glyoxylate, glycolate and tartrate. A model is presented to explain the role of the tetramethylammonium ions. Studies were also performed using ZnO, SiC, BaTiO3 and Sr TiO3, which in the absence of tetramethylammonium ions produced formate and formaldehyde. The relative quantum efficiencies of the six semiconductors were related to their band gaps and conduction band potentials. The role and effectiveness of several 'hole acceptor' (electron donor) compounds in this process is shown to be related to their redox potentials. (C) 1998 Elsevier Science S.A. All rights reserved.</p
Characterization of a New TiO2 Nanoflower Prepared by the Sol–Gel Process in a Reverse Microemulsion
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Acute Toxicity of TiO2 Nanoparticles to Ceriodaphnia dubia under Visible Light and Dark Conditions in a Freshwater System
No full textSolar-driven photocatalytic treatment of diclofenac using immobilized TiO2-based zeolite composites
No full textPhotocatalytic degradation of methylene blue and inactivation of pathogenic bacteria using silver nanoparticles modified titanium dioxide thin films
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