Abstract: Methods for preparing selective catalytic metal microstructures and nanostructures having at least one surface ligand. The methods include providing a preliminary metal microstructure or nanostructure having at least one preliminary surface ligand, and replacing the preliminary surface ligand with at least one surface ligand to provide the catalytic metal microstructure or nanostructure.

Abstract: Aspects of the present disclosure generally relate to semiconductor nanoparticles, metal-semiconductor hybrid structures, processes for producing semiconductor nanoparticles, processes for producing metal-semiconductor hybrid structures, and processes for producing conversion products. In an aspect is provided a process for producing a metal-semiconductor hybrid structure that includes introducing a first precursor comprising a metal from Group 11-Group 14 to an amine and an anion precursor to form a semiconductor nanoparticle comprising the Group 11-Group 14 metal; introducing a second precursor comprising a metal from Group 7-Group 11 to the semiconductor nanoparticle to form a metal-semiconductor mixture; and introducing the metal-semiconductor mixture to separation conditions to produce the metal-semiconductor hybrid structure.

Abstract: A method for preparing copper nanocubes with specific facets and uniform size, the method comprising combining a copper complex solution in a reaction mixture with a ligand. Using a ligand of pure, unoxidized tributylphosphine, uniform copper nanocubes with six facets are prepared.

Abstract: A component for use in an electrochemical battery, wherein the component includes a self-supporting porous metal substrate capable of acting as both an electrode and a current collector in an electrochemical battery. The present disclosure is also directed to methods of making the components of the present disclosure and electrochemical batteries including at least one component according to the present disclosure.

Abstract: Cu-based nanostructures have excellent catalytic, electronic, and plasmonic performance due to their unique chemical and physical properties. A range of Cu materials including foil, spherical nanoparticles, nanowires, and nanocubes have been explored for catalyzing CO2 electroreduction. However, practical application of the CO2 electroreduction reaction requires Cu catalysts hold a high percentage of exposed surface atoms for improved product selectivity. The present disclosure describes a high temperature reduction method to prepare Cu nanosheets with size range from about 40 nm to about 13 ?m in a hydrophobic system. The purity of trioctyphosphine (TOP) plays an important role for shape-controlled synthesis of Cu nanosheets. The morphology evolution was investigated by adjusting the feeding molar ratio of TOP/Cu-tetradecylamine complex. The Cu nanosheets formed by the methods of the present disclosure have high surface area and stability in solution for more than three months.

Abstract: The present disclosure is directed to methods of making Pb-free perovskites for short-wave IR (SWIR) devices and to various Pb-free perovskite materials disclosed herein. The perovskites disclosed herein have improved chemical stability and long-term stability, while the production methods disclosed herein have improved safety and lower cost.

Abstract: All inorganic perovskites for short-wave IR (SWIR) devices having improved chemical stability and long-term stability. Improved methods of making all inorganic perovskites for short-wave IR (SWIR) devices are also disclosed herein.

Abstract: A method for preparing copper-solver and copper-gold porous microsheets with specific pore sizes, the method including the steps of providing a solution of copper microsheets and adding a silver or gold solution under controlled temperature, the reaction conditions can be changed to determine pore sizes.

Abstract: A simple approach to produce mixed Cu/Cu2O nanocrystals having a specific morphology by controlling the reaction temperature during Cu/Cu2O nanocrystals synthesis. Other variables are kept constant, such as the amount of reactants, while the reaction temperatures is maintained at a predetermined temperature of 70° C., 30° C. or 0° C., which are used to produce different and controlled morphologies for the Cu/Cu2O nanocrystals. The reaction mixture includes a copper ion contributor, a capping agent, a pH adjustor, and reducing agent. The reaction mixture is held at the predetermined temperature for three hours to produce the Cu/Cu2O nanocrystals. The synthesis method has advantages such as mass production, easy operation, and high reproducibility.

Abstract: A method for preparing copper nanocubes with specific facets and uniform size, the method comprising combining a copper complex solution in a reaction mixture with a ligand. Using a ligand of pure, unoxidized tributylphosphine, uniform copper nanocubes with six facets are prepared.

Abstract: The present disclosure relates to a method for synthesizing Pd nanocubes having an average size less than 10 nm. The reaction temperature, reaction time, and molar ratios of TOP/Pd-OLA can be used to control size and formation of the Pd nanocubes. The present disclosure is also directed to Pd nanocubes, less than 10 nm, having face centered cubic structures. Pd nanocubes of the present disclosure are an effective catalyst for CO2 reduction reaction with excellent selectivity for CO. Small sized Pd nanocubes can be used not only as the seeds to prepare other metal nanocubes, but can also as powerful catalysts for a wide variety of reactions in different industrial processes.

Abstract: Catalysts, particularly nanocatalysts, useful for converting carbon dioxide into desired conversion products, such as sustainable chemicals and fuels. The nanocatalysts may comprise at least one nanoparticle having a main component and a secondary component, wherein at least one of the main component and the secondary component facilitates the conversion of carbon dioxide. The present disclosure also relates to methods for preparing the nanocatalysts described herein and methods of using the same.

Abstract: A method of electrochemical reduction of carbon dioxide includes the use of multi-faceted Cu2O crystals as a catalyst to convert CO2 to value-added products. An electrochemical cell for the electrochemical reduction of carbon dioxide includes a cathode including the multi-faceted Cu2O crystals. The multi-faceted Cu2O crystals have at least two different types of facets with different Miller indices. The multi-faceted Cu2O crystals include steps and kinks present at the transitions between the different types of facets. These steps and kinks improve the Faradaic Efficiency of the conversion of carbon dioxide. The multi-faceted Cu2O crystals may be nanosized. The multi-faceted Cu2O crystals may include 18-facet, 20-facet, and/or 50-facet Cu2O crystals.

Abstract: Methods of making a single-walled carbon nanotube thin film, and the thin film which can be located on a substrate, and can have a resistance of less than 7500 ohm/square, and a transparency to 550 nm light of greater than 85%.

Abstract: A method for preparing a hollow multi-metallic nanostructure, the method including the steps of providing a first metal nanostructure having a plurality of first metal atoms, and performing a synthetic strategy, the synthetic strategy including replacing a portion of the plurality of first metal atoms with a corresponding number of second metal ions, and promoting first metal atom diffusion to provide the hollow multi-metallic nanostructure.

Abstract: Methods for preparing selective catalytic metal microstructures and nanostructures having at least one surface ligand. The methods include providing a preliminary metal microstructure or nanostructure having at least one preliminary surface ligand, and replacing the preliminary surface ligand with at least one surface ligand to provide the catalytic metal microstructure or nanostructure.

Abstract: A chemical sensor is described having a substrate comprising a plurality of nanoribbons of an active layered nanomaterial, and a substance detection component for measuring a change in electrical or physical properties of at least a portion of the plurality of nanoribbons when in contact with a substance.

Abstract: Cu-based nanostructures have excellent catalytic, electronic, and plasmonic performance due to their unique chemical and physical properties. A range of Cu materials including foil, spherical nanoparticles, nanowires, and nanocubes have been explored for catalyzing CO2 electroreduction. However, practical application of the CO2 electroreduction reaction requires Cu catalysts hold a high percentage of exposed surface atoms for improved product selectivity. The present disclosure describes a high temperature reduction method to prepare Cu nanosheets with size range from about 40 nm to about 13 ?m in a hydrophobic system. The purity of trioctyphosphine (TOP) plays an important role for shape-controlled synthesis of Cu nanosheets. The morphology evolution was investigated by adjusting the feeding molar ratio of TOP/Cu-tetradecylamine complex. The Cu nanosheets formed by the methods of the present disclosure have high surface area and stability in solution for more than three months.

Abstract: Catalysts, particularly nanocatalysts, useful for converting carbon dioxide into desired conversion products, such as sustainable chemicals and fuels. The nanocatalysts may comprise at least one nanoparticle having a main component and a secondary component, wherein at least one of the main component and the secondary component facilitates the conversion of carbon dioxide. The present disclosure also relates to methods for preparing the nanocatalysts described herein and methods of using the same.

Abstract: A simple approach to produce mixed Cu/Cu2O nanocrystals having a specific morphology by controlling the reaction temperature during Cu/Cu2O nanocrystals synthesis. Other variables are kept constant, such as the amount of reactants, while the reaction temperatures is maintained at a predetermined temperature of 70° C., 30° C. or 0° C., which are used to produce different and controlled morphologies for the Cu/Cu2O nanocrystals. The reaction mixture includes a copper ion contributor, a capping agent, a pH adjustor, and reducing agent. The reaction mixture is held at the predetermined temperature for three hours to produce the Cu/Cu2O nanocrystals. The synthesis method has advantages such as mass production, easy operation, and high reproducibility.