Performance analysis of a contactless nanostructure in solar-powered desalination system.

To address the water scarcity problem, solar desalination by using solar still can be one feasible solution to purify the water. Researchers recently developed thermal absorption materials fully and partially submerged in water and floating. These thermal absorption materials transfer their absorbed solar energy to water through thermal conduction.

Electrochemical mass spectroscopic and surface photovoltage studies of catalytic water photooxidation by undoped and carbon-doped titania.

Carbon-doped TiO2, demonstrated as an efficient photocatalyst in visible light photooxidation of organic compounds, was prepared with different doping concentrations and investigated via differential electrochemical mass spectroscopy (DEMS) and capacitive surface photovoltage (SPV) measurements in the form of thin layer electrodes. In all cases the total photocurrent as well as the surface photovoltage of the doped materials decreased markedly in relation to the undoped one. No detectable oxygen evolved from the doped electrodes in acidic solution under UV-light excitation.