A wastewater to chemical fuel conversion device is provided that includes a housing having a first chamber and a second chamber, where the first chamber includes a bio-photoanode, where the second chamber includes a photocathode, where a backside of the bio-photoanode abuts a first side of a planatized fluorine doped tin oxide (FTO) glass, where a backside of the photocathode abuts a second side of the FTO glass, where a proton exchange membrane separates the first chamber from the second chamber, where the first chamber includes a wastewater input and a reclaimed water output, where the second chamber includes a solar light input and a H.sub.2 gas output, where the solar light input is disposed for solar light illumination of the first chamber and the second chamber.

A wastewater to chemical fuel conversion device is provided that includes a housing having a first chamber and a second chamber, where the first chamber includes a bio-photoanode, where the second chamber includes a photocathode, where a backside of the bio-photoanode abuts a first side of a planatized fluorine doped tin oxide (FTO) glass, where a backside of the photocathode abuts a second side of the FTO glass, where a proton exchange membrane separates the first chamber from the second chamber, where the first chamber includes a wastewater input and a reclaimed water output, where the second chamber includes a solar light input and a H.sub.2 gas output, where the solar light input is disposed for solar light illumination of the first chamber and the second chamber.

The present invention relates to a graphene oxide material, a halogenated graphene material, preparation methods therefor, and an electrolysis system. A method for producing a graphene oxide material in an electrolysis system comprises the following steps: applying a voltage between a working electrode and a counter electrode, and exfoliating graphite and/or amorphous carbon under the action of electrolysis so as to generate the graphene oxide material, wherein before applying the voltage and/or in the process of applying the voltage, light irradiation is performed on the electrolysis system.

The present invention is directed to a renewable methanol production system generally comprising: 1. a water capture module for directly capturing water from air to provide water in a liquid form; 2. an electrolysis module for electrolysis of the liquid water to produce hydrogen; 3. an exothermic reactor for reacting the hydrogen from the electrolysis module with carbon dioxide to produce renewable methanol.

A carbon dioxide gas phase reduction device includes an oxidation tank including an oxidation electrode, a reduction tank to which carbon dioxide is supplied, an intermediate tank that is disposed between the oxidation tank and the reduction tank and capable of pouring and discharging an electrolytic solution, an ion exchange membrane disposed between the oxidation tank and the intermediate tank, a gas reduction sheet in which an ion exchange membrane and a reduction electrode are laminated and which is disposed between the reduction tank and the intermediate tank with the ion exchange membrane facing the intermediate tank and the reduction electrode facing the reduction tank, and a conducting wire connecting the oxidation electrode to the reduction electrode.

A carbon dioxide gas phase reduction device includes an oxidation tank including an oxidation electrode, a reduction tank to which carbon dioxide is supplied, an intermediate tank that is disposed between the oxidation tank and the reduction tank and capable of pouring and discharging an electrolytic solution, an ion exchange membrane disposed between the oxidation tank and the intermediate tank, a gas reduction sheet in which an ion exchange membrane and a reduction electrode are laminated and which is disposed between the reduction tank and the intermediate tank with the ion exchange membrane facing the intermediate tank and the reduction electrode facing the reduction tank, and a conducting wire connecting the oxidation electrode to the reduction electrode.

A method for controllably making catalysts with at least one metallic surface state, that includes: a) identifying all the topological insulators in the ICSD, b) calculating the Real Space Invariants of the valence bands for all these topological insulators in order to c) identify in all these topological insulators the Wyckoff Positions where the irreducible Wannier Charge Centers (WCCs) are localized, and then d) selecting as potentially catalytic active compound a topological insulator in which the position of WCCs is not occupied by any atom; e) synthesizing a crystal of the selected potentially catalytic active compound either so that it is grown in a predefined crystallographic direction (characterized by its Miller indices (h,k,l)) which exposes the metallic surface state; or cutting the crystal in a predefined crystallographic direction (characterized by its Miller indices (h,k,l)), so that the metallic surface state is exposed when

[00001]$\left(\left(\{\begin{array}{c}\left(h,k,l\right).Math.\left(x-X_j,y-Y_j,z-Z_j\right)=0,\\ \left(h,k,l\right).Math.\left(x-x_i,y-y_i,z-z_i\right)\ne 0,\\ h,k,lϵZ\end{array}\right)\right)$

Disclosed are an electrode for gas generation, a method of preparing the electrode, and a device including the electrode for gas generation. The electrode includes a gas generating electrode layer and a three-dimensional (3D) super-aerophobic layer formed on at least one portion of the gas generating electrode layer and including porous hydrogel.

Disclosed are an electrode for gas generation, a method of preparing the electrode, and a device including the electrode for gas generation. The electrode includes a gas generating electrode layer and a three-dimensional (3D) super-aerophobic layer formed on at least one portion of the gas generating electrode layer and including porous hydrogel.

Devices for photoelectrodes for water splitting based on indium nanowires on flexible substrates as well as methods of manufacture by transferring nanowire arrays to flexible substrates.