Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 125 for “"Photoelectrochemical"”.
-
Suspended Particles as Photoelectrochemical Systems
… particles that can serve potentially as minute photoelectrochemical reaction centers in form of suspensions have been carried out for InP powders, colloidal CdS, and tris(2,2'-bipyridine)ruthenium(II) complex assembled in particles of zeolite X in this work.
-
Photoelectrochemical Wet Etching of Gallium Nitride
In this work, the technique of photoelectrochemical wet etching using KOH solutions has been developed for n-type GaN materials. Customized hardware and software have been assembled to carry out the etching. The etching characteristics were characterized over a wide range of process conditions. …
-
Electrochemical and Photoelectrochemical Devices based on Polymeric Materials
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Photoelectrochemical and Chemoenzymatic Reforming for Sustainable Fuel Production
… with the introduction of new and efficient photoelectrochemical (PEC) and chemoenzymatic processes for reforming a diverse range of waste feedstocks to sustainable fuels. Solar-driven PEC reforming based on halide perovskite light-absorber is first developed as an attractive alternative to …
-
Photoelectrochemical array platform for genomic scale DNA synthesis
… This thesis presents a complete platform for the photoelectrochemical cleavage of protecting groups during in situ DNA synthesis. Photoelectrochemically patterned microarrays of phosphoramidite dye were produced with spot sizes of 100 um. This technology holds the potential for lowest cost per …
-
Investigation of novel ammonia production options using photoelectrochemical hydrogen
… and experimentally investigates the photoelectrochemical production of hydrogen and electrochemical synthesis of ammonia in a cleaner and integrated manner. In this respect, the main objective of this thesis is to develop a novel solar energy based ammonia production system integrated …
-
Photoelectrochemical imaging of gold nanoparticles by light-activated electrochemistry
… and knowledge were implemented to record a photoelectrochemical image of a AuNP island on an NH2-terminated electrode using a state-of-the-art light projector. The developed imaging technique significantly enhances the versatility of electrochemical imaging compared to the conventional …
-
Electrochemical and photoelectrochemical micromachining of silicon in HF electroytes
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
-
Photoelectrochemical fuel synthesis using organic semiconductors with (bio)molecular catalysts
Photoelectrochemical (PEC) devices offer great promise for simultaneous solar light harvesting and chemical storage, converting water and CO2 into value-added products. While progress has been made to improve their solar-to-fuel conversion efficiencies, most conventional prototypes face challenges …
-
Layer-by-layer assembly of conducting membranes for photoelectrochemical cells
… above 0.1 mS/cm are highly desirable for photoelectrochemical cell membrane applications. Mixed conducting polymer composite PEDOT:sPPO was incorporated into LbL films and the composition ratio of the film components was varied to generate a series of films with tunable transparency and …
-
Photoelectrochemical determination of the low temperature redox kinetics in SrTiO3
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1989.
-
Electrochemical and Photoelectrochemical Study of Conduction modes in Nanostructured TiO2 Films
In this work, two types of nano-structured TiO2 layers were obtained by two different methods. First, during an exploratory study, a set of nano-columnar TiO2 films and niobium doped TiO2 films was obtained on stainless steel, by a RF reactive sputtering technique. The argon gas is ionized by a …
-
First-principles study of doped hematite surfaces for photoelectrochemical water splitting
Photoelectrochemical (PEC) water splitting, using sunlight and appropriate semiconductors to produce hydrogen (H2) fuel, is a promising route to solve both the production of clean H2 fuel and storage for solar energy. Owing to its various advantages, hematite (α-Fe2O3) has emerged as a promising …
-
Synthesis and characterization of metal oxide semiconductors for photoelectrochemical hydrogen production
… frequency (RF) reactive magnetron sputtering for photoelectrochemical (PEC) applications. Metal-oxide thin films as a photoelectrode are of special interest for PEC systems to produce hydrogen in an aqueous solution by solar energy due to their low cost and potential stability. The following list …
-
Using molecule-surface interactions for improved photoelectrochemical device performance and modeling
… is becoming increasingly popular in the field of photoelectrochemical (PEC) water-splitting, a promising carbon-free approach to produce hydrogen from liquid water. PEC water- splitting cells consist of at least one semiconductor photoelectrode in contact with an aqueous electrolyte. Surface …
-
Experimental investigation and analyses of continuous type hybrid photoelectrochemical hydrogen production systems
… develop and investigate a continuous type hybrid photoelectrochemical-chloralkali H2 production reactor that converts the by– products into useful industrial commodities (i.e., Cl2 and NaOH). This system maximizes solar spectrum use by taking advantage of photocatalysis and PV/T. Furthermore, by …
-
Preparation of oriented molybdenum disulfide thin films for photoelectrochemical energy havesting applications
… good candidates of semiconductor electrodes for photoelectrochemical (PEC) solar cells due to their suitable band gap for solar energy absorption and extremely good stability. However, the scalable synthesis of bulk single crystals of LTMDs remains a challenge, limiting the development of their …
-
Transition Metal Chalcogenide (Cadmium Sulfide) Nanoparticles: (Bio)synthesis, Characterization and Photoelectrochemical Performance
… agents, photocatalytic hydrogen evolution, photoelectrochemical (PEC) energy conversion, and photovoltaic devices. Biosynthesis is an innovative, environmentally friendly route for the synthesis of CdS NPs. Specifically, bacterial precipitation of CdS NPs provides a simple, scalable …
-
Tailored diketopyrrolopyrrole-based organic dyes in photoelectrochemical cells for solar fuel synthesis
… energy to chemical feedstocks in dye-sensitised photoelectrochemical cells functionalised with molecular catalysts offers an attractive route to mitigate the current energy crisis and reduce global CO₂ emissions. However, most reports currently focus on precious metal-based light absorbers, thus …
Page 1 of 7