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Showing 1 to 20 of 22 for “"Metal chalcogenide"”.
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New Directions in Metal Chalcogenide Nanochemistry
Colloidal semiconductor nanocrystals have shown great promise in functional devices such as solar cells and LEDs, but still relatively little is understood about the chemistry of their formation and resulting structure. In this thesis, we describe the results of our study of ultrathin Bi2S3 …
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Metal Chalcogenide Nanocrystal Assembly: From Synthesis To Applications
… subsequent surface oxidation reaction to form chalcogenide linkages is the key.</p> <p>Cation-exchange reactions in metal chalcogenide gels were explored for the first time. Ag2Se wet gel monoliths were successfully prepared by an ion-exchange reaction of a monolithic CdSe wet gel and converted …
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Coinage Metal Chalcogenide Clusters with N-Heterocyclic Carbene Ancillary Ligands
… and characterization of homo- and heterometallic group 11 – group 16 clusters with N-heterocyclic carbene (NHC) ligands. The clusters were prepared from reactive group 11 trimethylsilylchalcogenolate reagents (NHC-M-ESiMe3; M = Cu, Au; E = S, Se, Te) by silane deprotection reactions with …
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Crystal growth and band engineering of transition metal chalcogenide systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Synthesis and characterization of metal chalcogenide nanostructured materials for thermoelectric applications
<p>The synthesis and characterization of metal chalcogenide nanostructured materials with the potential to exhibit enhanced thermoelectric (TE) properties is reported. The tellurides, specifically PbTe and Bi⊂2⊂Te⊂3⊂ (Bi⊂2⊂Te⊂3⊂–Sb⊂2⊂Te⊂3⊂ alloys) were selected as these are well established TE …
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Transition Metal Chalcogenide (Cadmium Sulfide) Nanoparticles: (Bio)synthesis, Characterization and Photoelectrochemical Performance
<p>Cadmium sulfide (CdS) is one of the most commonly used and studied II/VI semiconductor materials due to its electron energy band structure with desirable band edges and direct band gap. CdS nanoparticles (NPs) are widely applied in different areas such as biosensing, antibacterial agents, …
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The use of metal complexes to deposit metal chalcogenide thin films and nanoparticles
… The second chapter focuses on the deposition of metal chalcogenides thin films from single molecular precursors of the type [M {N(EPR2)2}2], were M = Pt, Pd, Ni; E = S or Se and R = fPr or Ph. Ligands of the type R2P(E)NP(E)R2, where R = *Pr or Ph were prepared to synthesize these precursors. …
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Solution Routes to Metal Chalcogenide and Zinc Oxide Thin Films for Device Applications
Semiconductor thin films and their fabrication methods have been intensively investigated in order to fulfill a wide spectrum of applications in electronic devices, optical devices, and photoelectronic devices. Solution deposition of semiconductor thin films draws increasing attention since it …
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The synthesis and characterization of metal chalcogenide-pedot: pss polymer composites for thermal energy conversion
… describes the synthesis and characterization of metal chalcogenide/PEDOT:PSS polymer composites as possible thermoelectric materials for thermal energy conversion; specifically, Te, Bi2Te3, Bi2S3, and Ag2Te. The inorganic materials have high Seebeck coefficients while the PEDOT:PSS has high …
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A facile hybrid method to synthesize metal and metal chalcogenide nanoparticles using various capping groups
… of bismuth (Bi), antimony (Sb) and tin (Sn) metal and metal chalcogenide nanoparticles is presented using a novel hybrid solution based high temperature method. Furthermore is the synthesis of zinc telluride (ZnTe) and cadmium telluride (CdTe) nanostructured materials also described. The …
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Scanning tunneling microscopy and spectroscopy study of layered transition metal chalcogenide thin films tuned by thickness, structural phase, and heterostructure
Layered transition metal chalcogenides (TMCs) have a long and fruitful history, exhibiting diverse properties and interesting quantum phenomena, such as superconductivity, charge density wave (CDW), and non-trivial topological states. Since the discovery that layered materials can be exfoliated to …
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Metal chalcogenide nanoparticle gel networks: their formation mechanism and application for novel material generation and heavy metal remediation via cation exchange reactions
<p>METAL CHALCOGENIDE NANOPARTICLE GEL NETWORKS: THEIR FROMATION MECHANISM AND APPLICATION FOR NOVEL MATERIAL GENERATION AND HEAVY METAL REMEDIATION VIA CATION EXCHANGE REACTIONS</p> <p>by</p> <p>IRINA R. PALA</p> <p>February 2012</p> <p>Advisor: Dr. Stephanie L. Brock</p> <p>Major: Chemistry</p> …
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Deposition of CoxSy, NixSy MnS and CdS thin films from their alkylthiourea precursors using the Aerosol Assisted Chemical Vapour Desposition (AACVD) technique
… synthesized, using the 1:2 mole ratio metal salts of (NiCl^ C0CI2, MnCfe and CdCh) with their respective ligands. These complexes were characterized using melting points and elemental analysis to distinguish their monomelic character and confirm the purity of the complexes. Single X-ray …
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ELECTROCATALYTIC PROCESSES FOR ENERGY STORAGE & CONVERSION
… new devices. Over the last few years transition metal chalcogenides have emerged as highly efficient electrocatalysts for several electrochemical devices such as water splitting, carbon dioxide electroreduction and, solar energy converters. These transition metal chalcogenides exhibit high …
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A FACILE SYNTHESIS OF TRANSITION METAL OXIDE AND CHALCOGENIDES NANOCRYSTALS FOR ELECTROCATALYTIC APPLICA TIONS
… interactions between mixed valence transition metal elements in the spinel structure contribute to its exceptional catalytic performance for oxygen reduction/evolution reactions. However, nanocrystals by conventional synthesis methods are either highly aggregated or capped with excessive …
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Template-Controlled Synthesis of Magnetic/Semiconducting Nanoparticles within Amphiphilic Core-Shell Cylindrical Polymer Brushes
… in the polymer core can coordinate with various metal ions. The hydrophilic core of polymer brushes, poly(acrylic acid), was neutralized by NaOH and afterward iron cations (Fe3+ and Fe2+) were loaded into the polymer core via ion exchange. The formation of the polychelates of polymer brushes and …
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Novel Precursors for the Synthesis of Metal Selenide Nanoparticles, Thin Films and Alloys
Metal selenides are important semiconducting materials and are highly useful in various electronic and/or thermoelectric devices. Different synthetic protocols are available for preparation of metal selenide nanoparticles and/or thin films. Nonetheless, the use of single source precursors is …
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Synthesis of binary, ternary, and alloyed metal sulfides by a solvent-less route
… by reacting with an aqueous solution of the metal nitrate. The second section involves the melt (solvent less) method. This is as follows, a stoichiometric amount of xanthate complexes of the corresponding metal was mixed and crushed to obtain a homogenous mixture. The mixture was then placed …
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Synthesis And Characterization Of Discrete Fexni2-Xp Nanoparticles; Assembly Of Phosphide Nanoparticles Into Porous Networks
… on synthesis, characterization and assembly of metal phosphide nanoparticles of relevance to catalysis, magnetism, and optoelectronic applications. These include (1) synthesis of discrete FexNi2-xP ternary nanocrystals of relevance to hydrodesulfurization (HDS) catalysis and magnetism, and (2) …
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