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Articles 1 - 3 of 3
Full-Text Articles in Nanoscience and Nanotechnology
Fabrication And Modification Of Titania Nanotube Arrays For Harvesting Solar Energy And Drug Delivery Applications, Ahmed El Ruby Abdel Rahman Mohamed
Fabrication And Modification Of Titania Nanotube Arrays For Harvesting Solar Energy And Drug Delivery Applications, Ahmed El Ruby Abdel Rahman Mohamed
Electronic Thesis and Dissertation Repository
The fast diminishing of fossil fuels in the near future, as well as the global warming caused by increasing greenhouse gases have motivated the urgent quest to develop advanced materials as cost-effective photoanodes for solar light harvesting and many other photocatalytic applications. Recently, titania nanotube arrays (TNTAs) fabricated by anodization process has attracted great interest due to their excellent properties such as: high surface area, vertically oriented, highly organized, one-dimensional, nanotubular structure, photoactivity, chemical stability and biocompatibility. This unique combination of excellent properties makes TNTAs an excellent photoanode for solar light harvesting. However, the relatively wide band gap energy of …
Advanced Materials For Lithium Ion Batteries:Surface And Interface Chemistry, Yulong Liu
Advanced Materials For Lithium Ion Batteries:Surface And Interface Chemistry, Yulong Liu
Electronic Thesis and Dissertation Repository
Lithium ion batteries (LIBs) are the indispensable energy storage devices in our modern society. LiFePO4, as one of the most promising cathode, are widely used in LIBs. However, impurity phases are formed in LiFePO4 during carbon coating process due to the intrinsic strong reducing atmosphere. Herein, as the first part of my work, interface chemistry of carbon coating on LiFePO4 are symmetrically investigated by advanced characterization techniques. Two distinct secondary phases are formed during carbon coating process at different condition. Moreover, secondary phase formation is controllable by changing the particle size of LiFePO4, annealing …
Controlled Synthesis Of One Dimensional Nanostructured Materials And Their Applications As Catalyst Supports In Proton Exchange Membrane Fuel Cells, Mohammad Norouzi Banis
Controlled Synthesis Of One Dimensional Nanostructured Materials And Their Applications As Catalyst Supports In Proton Exchange Membrane Fuel Cells, Mohammad Norouzi Banis
Electronic Thesis and Dissertation Repository
Nanomaterials have attracted significant interest in the past decade due to their unique structure and properties compared to their bulk counterparts. Nanomaterials-based solutions can address challenges in various technologies such as proton exchange membrane fuel cells (PEMFCs). PEMFC is an innovative energy conversion technology to directly convert chemical energy to electrical energy by using hydrogen as fuel. However, the current PEMFC system still faces significant technological roadblocks which have to be overcome before the system can become economically viable. A major impediment to the commercialization of PEMFC is the high cost of materials and manufacturing and stability, which is primarily …