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Towards Diamond-Based Photocatalysts: Spectroscopic Investigations at the Diamond-Water Interface
| Content Provider | Semantic Scholar |
|---|---|
| Author | Choudhury, Sneha |
| Copyright Year | 2020 |
| Abstract | xiii Zusammenfassung xv 1 Diamonds for a Carbon Neutral Future 1 1.1 The global energy and environmental concerns . . . . . . . . . . . . . . . . . . . 2 1.2 A step towards sustainability with renewables . . . . . . . . . . . . . . . . . . . . 3 1.3 Storage of solar energy and CO2 in the form of chemicals– Artificial Photosynthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.4 Diamonds for Artificial Photosynthesis. . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.4.1 Achieving visible light absorption in diamonds . . . . . . . . . . . . . . . 10 1.4.2 Possible pathways for photocatalytic CO2 reduction . . . . . . . . . . . 13 1.5 Aim and Outline of the thesis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2 Experimental and Theoretical Methods 21 2.1 X-ray spectroscopies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2.1.1 X-ray interaction with matter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2.1.2 X-ray absorption and emission spectroscopy . . . . . . . . . . . . . . . . 24 2.1.3 Photoemission spectroscopy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2.2 Infrared Spectroscopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2.2.1 Fundamentals of vibrational spectroscopy . . . . . . . . . . . . . . . . . . 31 2.2.2 Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 2.3 Experimental Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 2.3.1 Synchrotron Facility-BESSY II . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 2.3.2 Experimental End Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 2.3.2.1 LiXedrom end station XAS and XES in solids and liquids . . . . . . . 38 2.3.2.2 PEAXIS end station XAS in solids . . . . . . . . . . . . . . . . . . . . 39 2.3.2.3 IRIS end station FTIR Spectroscopy . . . . . . . . . . . . . . . . . . 41 2.3.2.4 Sol3 end station Near Ambient Pressure Photoemission Spectroscopy 41 2.4 Theoretical Modelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 2.4.1 B doped diamonds DFT using CASTEP and Dmol . . . . . . . . . . . 42 2.4.2 Ru(bpy) -ND DFT using CASTEP and ORCA . . . . . . . . . . . . . . . 43 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 3 Tuning Band Structure by Doping of Diamonds 47 3.1 p-type Diamonds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 3.1.1 Electronic structure of boron-doped diamonds. . . . . . . . . . . . . . . 50 3.1.1.1 Soft X-ray spectroscopies . . . . . . . . . . . . . . . . . . . . . . . . 50 3.1.1.2 Density Functional Theory calculations . . . . . . . . . . . . . . . . 53 |
| File Format | PDF HTM / HTML |
| DOI | 10.17169/refubium-26083 |
| Alternate Webpage(s) | https://refubium.fu-berlin.de/bitstream/handle/fub188/26324/Disseration_Chemie_Sneha.pdf?isAllowed=y&sequence=3 |
| Alternate Webpage(s) | https://doi.org/10.17169/refubium-26083 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
