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Title: Synthesis and characterization of efficient photoelectrodes for photoelectrochemical water splitting
Researcher: Kaur, Gurpreet
Guide(s): Shrivastav, Rohit
Keywords: Chemistry
Physical Sciences
University: Dayalbagh Educational Institute
Completed Date: 2020
Abstract: Towards the renewable hydrogen generation by solar light-induced photoelectrochemical (PEC) water splitting, the use of three-dimensional nano-hetero-structured thin films of metal oxide semiconductors as photoelectrode is a fast-emerging recent development that holds lot of promise for future applications. Present work deals with the synthesis and characterization of few such photoelectrodes, synthesized by suitably combining the three low-cost and earth-abundant metal oxides (ZnO, CuO and (and#945;)Fe2O3), along with impurity incorporation. Bilayered thin films, grown over ITO glass substrate by sol-gel and spray-pyrolysis techniques, were thoroughly characterized for structural, morphological, topographical and compositional characteristics by using X-ray diffractometry, scanning electron microscopy, atomic force microscopy, energy-dispersive X-ray analysis, UV-visible spectrometry, transmission electron microscopy and X-ray photoelectron spectroscopy. Using Xenon arc light source for illumination, prepared films were tested as working electrode for PEC water splitting in 3-electrode electrochemical cell, in conjunction with platinum counter electrode and saturated calomel reference electrode, to record the photocurrent density (Iph), short circuit current (Isc), open circuit potential (Voc) and applied bias photon-to-current efficiency (ABPE). Flat band potential (Vfb), charge carrier density (Nd) and charge transfer kinetics were also evaluated through electrochemical impedance measurements. Prepared films yielded major increment in PEC cell performance in comparison with the monolayered pristine films. The study has thrown a deeper insight on the significance and critical role of such modified nano-hetero-junction films in PEC solar-water-splitting. newline
Appears in Departments:Department of Chemistry

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01_title.pdfAttached File9.64 kBAdobe PDFView/Open
02_certificate.pdf164.67 kBAdobe PDFView/Open
03_declaration.pdf96.52 kBAdobe PDFView/Open
04_abstract.pdf61.18 kBAdobe PDFView/Open
05_acknowledgement.pdf68.66 kBAdobe PDFView/Open
06_contents.pdf139.62 kBAdobe PDFView/Open
07_list_of_tables.pdf41.43 kBAdobe PDFView/Open
08_list_of_figures.pdf129.78 kBAdobe PDFView/Open
09_abbreviations.pdf128.34 kBAdobe PDFView/Open
10_chapter1.pdf240.54 kBAdobe PDFView/Open
11_chapter2.pdf182.81 kBAdobe PDFView/Open
12_chapter3.pdf220 kBAdobe PDFView/Open
13_chapter4 .pdf2.72 MBAdobe PDFView/Open
14_chapter5.pdf2.84 MBAdobe PDFView/Open
15_chapter6.pdf3.05 MBAdobe PDFView/Open
16_conclusion.pdf133.08 kBAdobe PDFView/Open
17_references.pdf348.63 kBAdobe PDFView/Open
18_appendix.pdf1.05 MBAdobe PDFView/Open
19_summary.pdf109.53 kBAdobe PDFView/Open
80_recommendation.pdf237.23 kBAdobe PDFView/Open

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