Green Route for Hydrogen Evolution from Real Electroplating Waste Liquids Induced by a Solar Light Responsive Photocatalyst
| Autor: | Ming-Yen Wey, En-Chin Su, Bing-Shun Huang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Strontium
Renewable Energy Sustainability and the Environment General Chemical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Scavenger 0104 chemical sciences Nickel chemistry Wastewater Photocatalysis Environmental Chemistry Hydrogen evolution 0210 nano-technology Electroplating Platinum |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 5:2146-2153 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.6b01999 |
| Popis: | Real electroplating wastewater/liquid containing disodium ethylenediaminetetraacetate (Na2EDTA) and nickel (Ni), a platinum/nitrogen-doped TiO2/strontium titanate-TiO2 tube (a solar light-responsive material), and simulated sunlight were used as the photogenerated hole scavenger, photocatalyst, and light source, respectively, in the development and evaluation of a waste-to-energy system. Effects of the wastewater/liquid source, pH, EDTA concentration, EDTA/Ni molar ratio, EDTA/photocatalyst weight ratio, and the degree of Ni removal on the photocatalytic hydrogen evolution efficiency are discussed. Our results indicate that the hydrogen evolution efficiency is affected by these factors in the following order: EDTA/Ni molar ratio > EDTA/photocatalyst weight ratio > pH value. When the initial EDTA/Ni molar ratio and EDTA/photocatalyst weight ratios were 30 and 0.7, respectively, economically optimal hydrogen evolution efficiency (480.0 μmol/h/g) was achieved; when the waste liquid was further treated for Ni... |
| Databáze: | OpenAIRE |
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