Enhanced photocatalytic performance of sphere-like AgCl/ rGO catalysts under simulated and natural sunlight irradiation
| Autor: | Abulajiang Reheman, Kuerbangnisha Kadeer, Yalkunjan Tursun, Hujiabudula Maimaitizi, Abulikemu Abulizi, Dilinuer Talifu |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Graphene Mechanical Engineering Composite number Oxide 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Sunlight irradiation law.invention Catalysis chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials law 0103 physical sciences Enhanced degradation Photocatalysis Degradation (geology) General Materials Science 0210 nano-technology |
| Zdroj: | Materials Science in Semiconductor Processing. 90:151-161 |
| ISSN: | 1369-8001 |
| DOI: | 10.1016/j.mssp.2018.10.023 |
| Popis: | Here we prepared sphere-like AgCl by stirring in the presence of sodium oleate, and loaded it on the surface of reduced graphene oxide (rGO) to form sphere-like AgCl/ rGO composite. Sphere-like AgCl exhibited enhanced degradation efficiency after the inserting of rGO with degrading 80.6% of tetracycline (TC) within 90 min, which was about 15.4% higher than pristine spherical AgCl (65.2%) under simulated sunlight irradiation. Moreover, five times cycling test of the obtained samples had revealed the improved stability of AgCl/ rGO. The remarkable photocatalytic activity was mainly due to the better interaction between AgCl and rGO, where charge separation and transfer as well as the utilization of sunlight were boosted. Improved photocatalytic stability was majorly ascribed to the fast electrons transfer from AgCl to rGO before the reduction of Ag+ to Ag. Besides, a possible photocatalytic reaction mechanism under simulated sunlight was proposed. Meanwhile, AgCl/ rGO also exhibited better photocatalytic efficiency for the degradation of TC under natural sunlight irradiation (73.2%), which is hopeful for practical application of photocatalysts. |
| Databáze: | OpenAIRE |
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