Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater
Polyaniline (PANI) and PANI/Ag2O/Ag composites I and II were prepared under different AgNO3 oxidant concentrations using the oxidative photopolymerization method. The chemical structure and optical, electrical, and morphological properties were determined for the prepared nanocomposite. The PANI/Ag2...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2022-01-01
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| Series: | Adsorption Science & Technology |
| Online Access: | http://dx.doi.org/10.1155/2022/4282485 |
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| author | N. M. A. Hadia Ali Hajjiah Asmaa M. Elsayed S. H. Mohamed Mansoor Alruqi Mohamed Shaban Fatimah Mohammed Alzahrani Ahmed Adel A. Abdelazeez Mohamed Rabia |
| author_facet | N. M. A. Hadia Ali Hajjiah Asmaa M. Elsayed S. H. Mohamed Mansoor Alruqi Mohamed Shaban Fatimah Mohammed Alzahrani Ahmed Adel A. Abdelazeez Mohamed Rabia |
| author_sort | N. M. A. Hadia |
| collection | DOAJ |
| description | Polyaniline (PANI) and PANI/Ag2O/Ag composites I and II were prepared under different AgNO3 oxidant concentrations using the oxidative photopolymerization method. The chemical structure and optical, electrical, and morphological properties were determined for the prepared nanocomposite. The PANI/Ag2O/Ag composite II has the optimum optical properties, in which the bandgaps of PANI, composite I, and composite II are 3.02, 1.71, and 1.68 eV, respectively, with the morphology of a bunch of grape-like shapes with average particles sizes of 25 nm. Under the optimum optical properties, glass/PANI/Ag2O/Ag composite II electrode is used for hydrogen generation from sewage water. The measurements are carried out from a three-electrode cell under a xenon lamp. The effects of light wavelengths and temperature on the produced current density (Jph) are mentioned. Under the applied voltage (at 30°C), the current density values (Jph) increase from 0.003 to 0.012 mA.cm-2 in dark and light, respectively. While increasing the temperature, Jph values increase to 0.032 mAcm-2 at 60°C. The thermodynamic parameters are calculated, in which the activation energy (Ea), enthalpy (ΔH∗), and entropy (ΔS∗) values are 27.1 kJ·mol-1, 24.5 J mol-1, and 140.5 J K-1 mol-1, respectively. Finally, a simple mechanism for the produced hydrogen generation rate is mentioned. The prepared electrode is a very cheap (1$ for 12∗12 cm2) electrode. |
| format | Article |
| id | doaj-art-a803f16672794c2a922ad930a0425762 |
| institution | Kabale University |
| issn | 2048-4038 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-a803f16672794c2a922ad930a04257622025-01-02T23:44:58ZengSAGE PublishingAdsorption Science & Technology2048-40382022-01-01202210.1155/2022/4282485Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from WastewaterN. M. A. Hadia0Ali Hajjiah1Asmaa M. Elsayed2S. H. Mohamed3Mansoor Alruqi4Mohamed Shaban5Fatimah Mohammed Alzahrani6Ahmed Adel A. Abdelazeez7Mohamed Rabia8Physics DepartmentElectrical Engineering DepartmentNanophotonics and Applications LabPhysics DepartmentDepartment of Mechanical EngineeringNanophotonics and Applications LabChemistry DepartmentNanoscale ScienceNanomaterials Science Research LaboratoryPolyaniline (PANI) and PANI/Ag2O/Ag composites I and II were prepared under different AgNO3 oxidant concentrations using the oxidative photopolymerization method. The chemical structure and optical, electrical, and morphological properties were determined for the prepared nanocomposite. The PANI/Ag2O/Ag composite II has the optimum optical properties, in which the bandgaps of PANI, composite I, and composite II are 3.02, 1.71, and 1.68 eV, respectively, with the morphology of a bunch of grape-like shapes with average particles sizes of 25 nm. Under the optimum optical properties, glass/PANI/Ag2O/Ag composite II electrode is used for hydrogen generation from sewage water. The measurements are carried out from a three-electrode cell under a xenon lamp. The effects of light wavelengths and temperature on the produced current density (Jph) are mentioned. Under the applied voltage (at 30°C), the current density values (Jph) increase from 0.003 to 0.012 mA.cm-2 in dark and light, respectively. While increasing the temperature, Jph values increase to 0.032 mAcm-2 at 60°C. The thermodynamic parameters are calculated, in which the activation energy (Ea), enthalpy (ΔH∗), and entropy (ΔS∗) values are 27.1 kJ·mol-1, 24.5 J mol-1, and 140.5 J K-1 mol-1, respectively. Finally, a simple mechanism for the produced hydrogen generation rate is mentioned. The prepared electrode is a very cheap (1$ for 12∗12 cm2) electrode.http://dx.doi.org/10.1155/2022/4282485 |
| spellingShingle | N. M. A. Hadia Ali Hajjiah Asmaa M. Elsayed S. H. Mohamed Mansoor Alruqi Mohamed Shaban Fatimah Mohammed Alzahrani Ahmed Adel A. Abdelazeez Mohamed Rabia Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater Adsorption Science & Technology |
| title | Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater |
| title_full | Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater |
| title_fullStr | Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater |
| title_full_unstemmed | Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater |
| title_short | Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater |
| title_sort | bunch of grape like shape pani ag2o ag nanocomposite photocatalyst for hydrogen generation from wastewater |
| url | http://dx.doi.org/10.1155/2022/4282485 |
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