Patents by Inventor DANIEL V. ESPOSITO

DANIEL V. ESPOSITO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12053769
    Abstract: Aspects of the present disclosure generally relate to catalyst compositions including metal chalcogenides, processes for producing such catalyst compositions, processes for enhancing catalytic active sites in such catalyst compositions, and uses of such catalyst compositions in, e.g., processes for producing conversion products. In an aspect, a process for forming a catalyst composition is provided. The process includes introducing an electrolyte material and an amphiphile material to a metal chalcogenide to form the catalyst composition. In another aspect, a catalyst composition is provided. The catalyst composition includes a metal chalcogenide, an electrolyte material, and an amphiphile material. Devices for hydrogen evolution reaction are also provided.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: August 6, 2024
    Assignees: Honda Motor Co., Ltd., The Trustees of Columbia University in the City of New York
    Inventors: Xufan Li, Avetik Harutyunyan, Xiangye Liu, Baiching Li, James Curtis Hone, Daniel V. Esposito
  • Publication number: 20230390724
    Abstract: A photocatalyst suspension reactor for solar fuel formation. The reactor may comprise a shallow pool filled with a first portion of an electrolyte solution. The electrolyte solution may comprise a solvent, a plurality of redox shuttle molecules, and a plurality of photocatalyst particles. The reactor may further comprise a plurality of tubes disposed on a surface of the shallow pool, each tube of the plurality of tubes comprising an upper half and a lower half. The upper half may comprise a transparent material configured to be minimally permeable to hydrogen gas and oxygen gas. The lower half may be configured to be filled with a second portion of the electrolyte solution and comprises an ion bridge material permeable to the plurality of redox shuttle molecules and minimally permeable to the plurality of photocatalyst particles.
    Type: Application
    Filed: June 6, 2023
    Publication date: December 7, 2023
    Inventors: Shane Ardo, Daniel V. Esposito, Rohini Bala Chandran, Zijie Chen, Joseph Michael Mayer, Luisa Barrera, Zejie Chen, Brian D. James, Yaset Acevedo, Jennie Huya-Kouadio
  • Publication number: 20230131300
    Abstract: Aspects of the present disclosure generally relate to catalyst compositions including metal chalcogenides, processes for producing such catalyst compositions, processes for enhancing catalytic active sites in such catalyst compositions, and uses of such catalyst compositions in, e.g., processes for producing conversion products. In an aspect, a process for forming a catalyst composition is provided. The process includes introducing an electrolyte material and an amphiphile material to a metal chalcogenide to form the catalyst composition. In another aspect, a catalyst composition is provided. The catalyst composition includes a metal chalcogenide, an electrolyte material, and an amphiphile material. Devices for hydrogen evolution reaction are also provided.
    Type: Application
    Filed: December 21, 2022
    Publication date: April 27, 2023
    Inventors: Xufan LI, Avetik HARUTYUNYAN, Xiangye LIU, Baiching LI, James Curtis HONE, Daniel V. ESPOSITO
  • Patent number: 11565247
    Abstract: Aspects of the present disclosure generally relate to catalyst compositions including metal chalcogenides, processes for producing such catalyst compositions, processes for enhancing catalytic active sites in such catalyst compositions, and uses of such catalyst compositions in, e.g., processes for producing conversion products. In an aspect, a process for forming a catalyst composition is provided. The process includes introducing an electrolyte material and an amphiphile material to a metal chalcogenide to form the catalyst composition. In another aspect, a catalyst composition is provided. The catalyst composition includes a metal chalcogenide, an electrolyte material, and an amphiphile material. Devices for hydrogen evolution reaction are also provided.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: January 31, 2023
    Assignees: HONDA MOTOR CO., LTD., THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Xufan Li, Avetik Harutyunyan, Xiangye Liu, Baiching Li, James Curtis Hone, Daniel V. Esposito
  • Publication number: 20220288576
    Abstract: Aspects of the present disclosure generally relate to catalyst compositions including metal chalcogenides, processes for producing such catalyst compositions, processes for enhancing catalytic active sites in such catalyst compositions, and uses of such catalyst compositions in, e.g., processes for producing conversion products. In an aspect, a process for forming a catalyst composition is provided. The process includes introducing an electrolyte material and an amphiphile material to a metal chalcogenide to form the catalyst composition. In another aspect, a catalyst composition is provided. The catalyst composition includes a metal chalcogenide, an electrolyte material, and an amphiphile material. Devices for hydrogen evolution reaction are also provided.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 15, 2022
    Inventors: Xufan LI, Avetik HARUTYUNYAN, Xiangye LIU, Baiching LI, James Curtis HONE, Daniel V. ESPOSITO
  • Publication number: 20210188711
    Abstract: Cement and concrete compositions are produced via metal hydroxides and metal oxides isolated from aqueous sources such as seawater or wastewater. Aqueous solutions are electrolyzed to produce an alkaline component stream having an elevated pH, which when mixed with mineralized seawater causes metal ions dissolved therein to precipitate out in the form of metal hydroxides such as Mg(OH)2 and Ca(OH)2. These metal hydroxide products are then utilized as feedstocks for production of cement and concrete structural elements, or are converted to metal oxides suitable for the same purpose. The hydroxide products are then subjected to pressure and prolonged exposure to carbon dioxide to accelerate carbonation of the hydrated product. The resulting carbonates exhibit sufficient compressive strength for use in making structural components for construction, while reducing or eliminating the carbon footprint associated with traditional methods of cement and concrete manufacturing.
    Type: Application
    Filed: December 23, 2020
    Publication date: June 24, 2021
    Applicant: The Trustees of Columbia University in the City of New York
    Inventors: Shiho Kawashima, Daniel V. Esposito, Siwei Ma, Abdullah Huzeyfe Akca
  • Patent number: 9562292
    Abstract: A photoactive article includes a substrate including a semiconductor to absorb light and to produce a plurality of charge carriers; a dielectric layer disposed on the substrate; a conductive member disposed on the dielectric layer and opposing the substrate such that the dielectric layer is exposed by the conductive member, the conductive member to receive a portion of the plurality of charge carriers from the substrate; and an electrolyte disposed on the dielectric layer and the conductive member. Making a photoactive article includes forming a dielectric layer on a substrate by rapid thermal oxidation, the dielectric layer comprising an oxide of a semiconductor; and forming a conductive member disposed on the dielectric layer.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: February 7, 2017
    Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
    Inventors: Daniel V. Esposito, Thomas P. Moffat, Albert Alec Talin
  • Publication number: 20140318978
    Abstract: A photoactive article includes a substrate including a semiconductor to absorb light and to produce a plurality of charge carriers; a dielectric layer disposed on the substrate; a conductive member disposed on the dielectric layer and opposing the substrate such that the dielectric layer is exposed by the conductive member, the conductive member to receive a portion of the plurality of charge carriers from the substrate; and an electrolyte disposed on the dielectric layer and the conductive member. Making a photoactive article includes forming a dielectric layer on a substrate by rapid thermal oxidation, the dielectric layer comprising an oxide of a semiconductor; and forming a conductive member disposed on the dielectric layer.
    Type: Application
    Filed: May 5, 2014
    Publication date: October 30, 2014
    Applicant: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
    Inventors: DANIEL V. ESPOSITO, THOMAS P. MOFFAT, ALBERT ALEC TALIN