Abstract: Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite may include a microporous framework comprising a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to bridging oxygen atoms. The organometallic moieties may include a titanium atom. The titanium atom may be bonded to a bridging oxygen atom, and the bridging oxygen atom may bridge the titanium atom of the organometallic moiety and a silicon atom of the microporous framework.

Abstract: Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite includes a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm and organometallic moieties each bonded to bridging oxygen atoms. The microporous framework includes at least silicon atoms and oxygen atoms. The organometallic moieties include a metal atom and a ring structure including the metal atom, a nitrogen atom, and one or more carbon atoms. The metal atom may be bonded to a bridging oxygen atom, and wherein the bridging oxygen atom bridges the metal atom of the organometallic moiety and a silicon atom of the microporous framework.

Abstract: The present disclosure relates generally to portable energy generation devices and methods. The devices are designed to covert formic acid into released hydrogen, alleviating the need for a hydrogen tank as a hydrogen source for fuel cell power. In particular, an electricity generation device for powering a battery comprising a formic acid reservoir containing a liquid consisting of formic acid; a reaction chamber capable of using a catalyst and heat to convert the formic acid to hydrogen and carbon dioxide; a fuel cell that generates electricity; a delivery system for moving converted hydrogen into the fuel cell; and a battery powered by electricity generated by the fuel cell is provided.

Abstract: Provided is a perovskite film including crystal grains with a crystalline structure of [A][B][X]3.n[C], wherein [A], [B], [X], [C] and n are as defined in the specification. The present disclosure further provides a precursor composition of perovskite film, method for producing of perovskite film, and semiconductor element including such films, as described above. With the optimal lattice arrangement, the perovskite film shows the effects of small surface roughness, and the semiconductor element thereof can thus achieve high efficiency and stability even with large area of film formation, thereby indeed having prospect of the application.

Abstract: The invention relates to heterogeneous catalysts comprising an organo-ruthenium complex immobilized to an aluminum-modified inorganic oxide by a chemical bond between a tetra-coordinated aluminum atom on a surface of the aluminum-modified inorganic oxide and an amino or imino nitrogen of the organo-ruthenium complex, methods of preparing the heterogeneous catalysts including immobilizing the organo-ruthenium complex to a tetra-coordinated aluminum atom on a surface of an inorganic oxide by reacting an amino or imino nitrogen of the organo-ruthenium complex and an aluminum-modified inorganic oxide, followed by a defined heat treatment, as well as methods for producing hydrogen from formic acid using the heterogeneous catalysts.

Abstract: Modified crystalline zeolite materials have a zeolite framework with both tetra-coordinate Lewis aluminum single sites and Brønsted aluminum sites. The tetra-coordinate Lewis aluminum single sites include aluminum atoms covalently bonded to a variable group and to two oxygen atoms and further coordinated to a third oxygen atom. The variable group may be alkyl, hydride, or hydroxyl. Methods for incorporating tetra-coordinate Lewis aluminum single sites into a crystalline zeolite material include contacting the crystalline zeolite material with a dialkylaluminum hydride R2AlH, where each R is alkyl, to react the dialkylaluminum hydride with the zeolite framework and form tetra-coordinate alkyl aluminum single sites. Heating the alkyl-aluminum zeolite induces ?-hydride elimination of the alkyl groups, whereby tetra-coordinate aluminum hydride single sites are formed.

Abstract: A separate microscopy system, applied to observe a specimen positioned on a stage and further to image the specimen on an imaging device, includes an ocular-lens unit, an adjustment unit and an objective-lens unit. The ocular-lens unit has an ocular-lens optical axis, and is manipulated to make the ocular-lens optical axis perpendicular to the stage. The adjustment unit is assembled to a side of the ocular-lens unit close to the stage. The objective-lens unit has an objective-lens optical axis, and is assembled to a side of the adjustment unit close to the stage. The objective-lens unit is manipulated to be adjusted by the adjustment unit to make the ocular-lens optical axis, the objective-lens optical axis and the imaging device co-axially and perpendicular to the stage, such that the specimen can be imaged at an imaging center position of the imaging device. In addition, an adjusting method thereof is also provided.

Abstract: Provided are a perovskite film and a manufacturing method thereof. The method includes the following steps. A perovskite precursor material is coated in a linear direction on a substrate with a temperature between 100° C. and 200° C., wherein a concentration of the perovskite precursor material is between 0.05 M and 1.5 M. An infrared light irradiation is performed on the perovskite precursor material to cure the perovskite precursor material to form a thin film including a compound represented by formula (1). The perovskite film has a single 2D phase structure or has a structure in which a 3D phase structure is mixed with a single 2D phase structure. (RNH3)2MA(n?1)M1nX(3n+1)??formula (1), wherein the definitions of R, MA, M1, X, and n are as defined above.

Abstract: Provided are a perovskite film and a manufacturing method thereof. The method includes the following steps. A perovskite precursor material is coated in a linear direction on a substrate with a temperature between 100° C. and 200° C., wherein a concentration of the perovskite precursor material is between 0.05 M and 1.5 M. An infrared light irradiation is performed on the perovskite precursor material to cure the perovskite precursor material to form a thin film including a compound represented by formula (1). The perovskite film has a single 2D phase structure or has a structure in which a 3D phase structure is mixed with a single 2D phase structure. (RNH3)2MA(n?1)M1nX(3n+1)??formula (1), wherein the definitions of R, MA, M1, X, and n are as defined above.

Abstract: The invention describes phospho-amino pincer-type ligands, metal complexes thereof, and catalytic methods comprising such metal complexes for conversion of carbon dioxide to methanol, conversion of aldehydes into alcohols, conversion of aldehydes in the presence of a trifluoromethylation agent into trifluorinated secondary alcohols, cycloaddition of carbon dioxide to an epoxide to provide cyclic carbonates or preparation of an amide from the combination of an alcohol and an amine.

Abstract: The present disclosure relates generally to new forms of portable energy generation devices and methods. The devices are designed to covert formic acid into released hydrogen, alleviating the need for a hydrogen tank as a hydrogen source for fuel cell power.

Abstract: Microfluidic devices in which electrokinetic mechanisms move droplets of a liquid or particles in a liquid are described. The devices include at least one electrode that is optically transparent and/or flexible.

Abstract: Catalyst compositions comprising catalytic nanoparticles including copper distributed, dispersed on, or mixed with a promoter including magnesium oxide. Pre-catalyst compositions comprising nanoparticles including copper oxides or copper hydroxide distributed, dispersed on, or mixed with a promoter including magnesium oxide. The catalysts are used in a method of producing at least methyl formate and hydrogen by non-oxidative dehydrogenation of methanol, optionally comprising reducing a pre-catalyst in hydrogen at a select temperature to obtain a catalyst comprising catalytic nanoparticles including copper distributed, dispersed on, or mixed with a promoter including magnesium oxide, flowing a fluid composition containing at least methanol over the catalyst to produce methyl formate and hydrogen, and recovering one or more of the methyl formate and hydrogen. A method of preparing catalyst compositions is disclosed.

Abstract: Microfluidic devices in which electrokinetic mechanisms move droplets of a liquid or particles in a liquid are described. The devices include at least one electrode that is optically transparent and/or flexible.

Abstract: A light emitting diode device includes a substrate, a frame, an LED die and a transparent layer. The frame is located on the substrate. The frame and the substrate collectively define a concave portion. The frame has a light reflectivity ranging from 20% to 40%. The LED die is located on the substrate and within the concave portion. The transparent layer is filled into the concave portion and covering the LED die, wherein the LED die has a side-emitting surface and a top-emitting surface, the side-emitting surface has a luminous intensity greater than that of the top-emitting surface.

Abstract: Embodiments include a system that may include a reactor including a reaction zone and a gas release zone separated by a selectively permeable membrane, wherein the selectively permeable membrane permits hydrogen to pass through the membrane and substantially blocks a substrate and its dehydrogenative coupling product from passing through the membrane. Embodiments further include a method of producing a dehydrogenative coupling product, wherein the method may include exposing a substrate to a catalyst in a reaction zone of a reactor; coupling the substrate to form the dehydrogenative coupling product and hydrogen; and separating the hydrogen from the dehydrogenative coupling product using a selectively permeable membrane and passing the hydrogen to a gas release zone of the reactor.

Abstract: Provided are a method for forming a perovskite layer and a method for forming a structure comprising a perovskite layer. The method for forming a perovskite layer includes the following steps: coating a perovskite precursor material on a substrate; and performing a heating treatment to the substrate; and irradiating the perovskite precursor material with infrared light.

Abstract: Herein disclosed is an optoelectronic unit measuring device comprising an objective lens, an imaging lens, a photographing lens, and a focus adjustment module disposed in a first light path. The objective lens receives a first testing light and converts the first testing into a second testing light. The imaging lens receives the second testing light and converts the second testing light into a third testing light. The photographing lens receives the third testing light and measures beam characteristic. The focus adjustment module selectively provides a first light transmitting member in the first light path, and adjusts the third testing light to focus at a first focus position or a second focus position. Wherein the focus adjustment module comprises a first carrier plate having a first area with the first light transmitting member, and moves the first carrier plate to selectively align the first area with the first light path.

Abstract: Embodiments of the present disclosure describe methods of preparing pre-catalysts that may be activated under methane to form catalysts for the hydrogenation of carbon dioxide to form olefins, among other chemical species. Embodiments of the present disclosure also describe methods of preparing catalysts and pre-catalysts, catalyst and pre-catalyst compositions, and methods of producing one or more chemical species using catalysts.

Abstract: The present invention provides a class of catalyst compounds that can safely and effectively release hydrogen gas from a chemical substrate without producing either noxious byproducts or byproducts that will deactivate the catalyst. The present invention provides catalysts used to produce hydrogen that has a satisfactory and sufficient lifespan (measured by turnover number (TON)), that has stability in the presence of moisture, air, acid, or impurities, promote a rapid reaction rate, and remain stable under the reaction conditions required for an effective hydrogen production system. Described herein are compounds for use as catalysts, as well as methods for producing hydrogen from formic acid and/or a formate using the disclosed catalysts. The methods include contacting formic acid and/or a formate with a catalyst as described herein, as well as methods of producing formic acid and/or a formate using the disclosed catalyst and methods for generating electricity using the catalysts described herein.