公开(公告)号：US20240295037A1

公开(公告)日：2024-09-05

申请号：US18174036

申请日：2023-02-24

申请人： City University of Hong Kong

发明人： Ruiqin Zhang ,  Haipeng Wang

IPC分类号： C25B11/053 ,  C25B1/04 ,  C25B9/50 ,  C25B11/077 ,  C25D3/54 ,  C25D5/10 ,  C25D5/50 ,  C25D7/12

CPC分类号： C25B11/053 ,  C25B1/04 ,  C25B9/50 ,  C25B11/077 ,  C25D3/54 ,  C25D5/10 ,  C25D5/50 ,  C25D7/12

摘要： A photoelectrode includes a double-layer homojunction of metal oxide semiconductor films without heteroatoms incorporated. The metal oxide semiconductor films are uniform in large size with rich oxygen vacancies. For BiVO4 films, Bi precursor can be electrodeposited on a substrate under atmospheric pressure and air atmosphere. The electrolytes for electrodeposition are acidic or alkaline with controllable pHs. The electrodeposited substrate is transferred to the muffle furnace for thermal evaporation with V precursor. Film thickness and size can be controlled by electrodeposition parameters. The BiVO4 double-layer homojunction is a safer and cheaper material in photo-driven devices, hydrogen producers, and solar cells, and is an economical replacement of costly III-V compounds, polymers, and valuable fossil. The BiVO4 double-layer homojunction can also be employed as photoelectrodes for H2 production via photoelectrochemical (PEC) water splitting under solar light, which can provide pivotal reactor materials for hydrogen producers and solar cells.

公开(公告)号：US20240117502A1

公开(公告)日：2024-04-11

申请号：US17962578

申请日：2022-10-10

申请人： Myeong-Eun HWANG

发明人： Myeong-Eun HWANG

IPC分类号： C25B1/04 ,  C25B9/19 ,  C25B9/50 ,  C25B9/65

CPC分类号： C25B1/04 ,  C25B9/19 ,  C25B9/50 ,  C25B9/65

摘要： Disclosed herein are methods and apparatuses for producing hydrogen and oxygen from water, or for producing less-complex constituents from a more-complex compound, more particularly, for decomposing chemical bonds of a compound using resonant electromagnetic (EM) waves such as sunlight.

公开(公告)号：US20230407498A1

公开(公告)日：2023-12-21

申请号：US18034217

申请日：2021-10-27

申请人： The Regents of the University of Michigan

发明人： Zetian Mi ,  Srinivas Vanka ,  Baowen Zhou

IPC分类号： C25B11/067 ,  C25B11/081 ,  C25B11/02 ,  C25B11/053 ,  C25B11/087 ,  C25B9/50 ,  C30B23/02 ,  C30B29/40 ,  C23C18/14 ,  C23C16/40 ,  C23C16/455 ,  C23C28/00

CPC分类号： C25B11/067 ,  C25B11/081 ,  C25B11/02 ,  C25B11/053 ,  C25B11/087 ,  C25B9/50 ,  C23C28/32 ,  C30B29/403 ,  C23C18/143 ,  C23C16/403 ,  C23C16/45525 ,  C23C28/345 ,  C30B23/02

摘要： A device includes a substrate having a surface, an array of conductive projections supported by the substrate and extending outward from the surface of the substrate, a plurality of catalyst nanoparticles disposed over the array of conductive projections, and an oxide layer covering the plurality of catalyst nanoparticles and the array of conductive projections. The oxide layer has a thickness on the order of a size of each catalyst nanoparticle of the plurality of catalyst nanoparticles.

公开(公告)号：US11761101B2

公开(公告)日：2023-09-19

申请号：US17938410

申请日：2022-10-06

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

发明人： Muhammad Ali Ehsan ,  Abdul Rehman

IPC分类号： C25B11/077 ,  C23C16/448 ,  C25B1/04 ,  C25B1/55 ,  C25B11/087 ,  C25B11/052 ,  C25B9/50

CPC分类号： C25B11/0773 ,  C23C16/4486 ,  C25B1/04 ,  C25B1/55 ,  C25B9/50 ,  C25B11/052 ,  C25B11/087

摘要： A CaTiO3—TiO2 composite electrode and method of making is described. The composite electrode comprises a substrate with an average 2-12 μm thick layer of CaTiO3—TiO2 composite particles having average diameters of 0.2-2.2 μm. The method of making the composite electrode involves contacting the substrate with an aerosol comprising a solvent, a calcium complex, and a titanium complex. The CaTiO3—TiO2 composite electrode is capable of being used in a photoelectrochemical cell for water splitting.

公开(公告)号：US20240301573A1

公开(公告)日：2024-09-12

申请号：US18599611

申请日：2024-03-08

申请人： The Regents of the University of Michigan

发明人： Zetian Mi ,  Wan Jae Dong

IPC分类号： C25B11/052 ,  C23C14/18 ,  C23C14/24 ,  C25B9/19 ,  C25B9/50 ,  C25B11/02 ,  C25B11/059 ,  C25B11/091 ,  C30B23/02 ,  C30B29/40 ,  C30B29/60 ,  C25B3/07 ,  C25B3/26

CPC分类号： C25B11/052 ,  C23C14/18 ,  C23C14/24 ,  C25B9/19 ,  C25B9/50 ,  C25B11/02 ,  C25B11/059 ,  C25B11/091 ,  C30B23/025 ,  C30B29/406 ,  C30B29/605 ,  C25B3/07 ,  C25B3/26

摘要： A device for catalytic conversion of carbon dioxide (CO2) includes a substrate having a surface, an array of conductive projections supported by the substrate and extending outward from the surface of the substrate, each conductive projection of the array of conductive projections having a semiconductor composition, and a plurality of nanoparticles disposed over the array of conductive projections, each nanoparticle of the plurality of nanoparticles being configured for the catalytic conversion of carbon dioxide (CO2). Each nanoparticle of the plurality of nanoparticles includes a Group VA element, the Group VA element being a metal or a metalloid.

公开(公告)号：US11912589B2

公开(公告)日：2024-02-27

申请号：US16673680

申请日：2019-11-04

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Shane Ardo ,  Samuel Thomas Keene ,  Gabriel S. Phun

IPC分类号： C02F1/46 ,  C25B1/04 ,  C02F1/461 ,  C25B1/55 ,  C25B9/50

CPC分类号： C02F1/4604 ,  C02F1/46104 ,  C25B1/04 ,  C25B1/55 ,  C25B9/50 ,  C02F2305/10

摘要： Photochemical energy conversion is more efficient when a single light-absorbing unit is split into multiple light-absorbing units (N) that are each 1/N as thick as the single light-absorbing unit and thus use the same amount of material as the single light-absorbing unit. For electrocatalytic parameters relevant to water electrolysis, the maximum efficiency for solar-to-fuel conversion from a 1.75 eV bandgap material increases from approximately 1% for a single light-absorbing unit to greater than 20% for 128 identical stacked light-absorbing units. Alterations in utilization of photons results in a better match of the light-absorber power output to the load of the chemical transformation and in the case of high-quality light-absorbers there is an added benefit from radiative coupling between the light-absorbing units via photon recycling.

公开(公告)号：US20230392269A1

公开(公告)日：2023-12-07

申请号：US18250274

申请日：2020-11-20

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yuya Uzumaki ,  Takeshi Komatsu ,  Akihiro Kono ,  Sayumi Sato

IPC分类号： C25B11/069 ,  C25B11/052 ,  C25B9/50 ,  C25B11/02 ,  C30B25/18 ,  C30B29/40 ,  C30B33/12 ,  C23C14/18 ,  C23C14/24 ,  C23C14/58

CPC分类号： C25B11/069 ,  C25B11/052 ,  C25B9/50 ,  C25B11/02 ,  C30B25/18 ,  C30B29/406 ,  C30B33/12 ,  C23C14/18 ,  C23C14/24 ,  C23C14/5806 ,  C23C14/5853

摘要： A semiconductor photoelectrode includes a conductive or insulating substrate, a semiconductor thin film disposed on a surface of substrate and having an uneven structure on the surface, a catalytic layer disposed along the uneven structure on the surface of semiconductor thin film, and a protective layer disposed to cover a back surface of substrate and side surfaces of substrate and semiconductor thin film.

公开(公告)号：US11739432B2

公开(公告)日：2023-08-29

申请号：US16985337

申请日：2020-08-05

申请人： NANOPTEK CORPORATION

发明人： John M. Guerra

IPC分类号： C25B1/55 ,  C25B11/091 ,  C25B1/04 ,  C25B11/00 ,  H01M14/00 ,  C25B9/70 ,  B01D19/00 ,  C25B11/087 ,  C25B11/049 ,  C25B9/50 ,  C25B11/061 ,  C25B11/063 ,  C25B11/065 ,  C25B11/077 ,  C25B11/042 ,  C25B11/043 ,  C25B11/046 ,  C25B11/031

CPC分类号： C25B1/55 ,  B01D19/0031 ,  C25B1/04 ,  C25B9/50 ,  C25B9/70 ,  C25B11/00 ,  C25B11/031 ,  C25B11/042 ,  C25B11/043 ,  C25B11/046 ,  C25B11/049 ,  C25B11/061 ,  C25B11/063 ,  C25B11/065 ,  C25B11/077 ,  C25B11/087 ,  C25B11/091 ,  H01M14/005 ,  Y02E10/52 ,  Y02E60/36

摘要： A radiation-assisted (typically solar-assisted) electrolyzer cell and panel for high-efficiency hydrogen production comprises a photoelectrode and electrode pair, with said photoelectrode comprising either a photoanode electrically coupled to a cathode shared with an anode, or a photocathode electrically coupled to an anode shared with a cathode; electrolyte; gas separators; all within a container divided into two chambers by said shared cathode or shared anode, and at least a portion of which is transparent to the electromagnetic radiation required by said photoanode (or photocathode) to apply photovoltage to a shared cathode (or anode) that increases the electrolysis current and hydrogen production.

公开(公告)号：US20240328012A1

公开(公告)日：2024-10-03

申请号：US18743226

申请日：2024-06-14

申请人： MITSUBISHI CHEMICAL CORPORATION ,  SHINSHU UNIVERSITY ,  JAPAN TECHNOLOGICAL RESEARCH ASSOCIATION OF ARTIFICIAL PHOTOSYNTHETIC CHEMICAL PROCESS

发明人： Hiroaki YOSHIDA ,  Susumu TSUTSUMINAI ,  Nobuko KARIYA ,  Kazunari DOMEN ,  Takashi HISATOMI ,  Lihua LIN ,  Xiaoping TAO ,  Xizhuang LIANG

IPC分类号： C25B11/087 ,  B01J19/12 ,  C25B1/04 ,  C25B1/55 ,  C25B9/50

CPC分类号： C25B11/087 ,  B01J19/127 ,  C25B1/04 ,  C25B1/55 ,  C25B9/50 ,  B01J2219/089 ,  B01J2219/0892 ,  B01J2219/12

摘要： Provided is a photocatalyst with significantly enhanced water splitting performance in YTOS or in a composition in which the yttrium element of YTOS has been replaced with another element. Also provided is a method for producing a photocatalyst that has a composition represented by the following general formula (I), the method including mixing, with a raw material of the photocatalyst, a flux component at a mass ratio of 0.01 times to 50 times, the flux component being composed of one or more chlorides and/or iodides of at least one selected from Li, Na, K, Rb, Mg, Ca, Sr, and Ba, and calcining a resultant product at 450° C. to 1050° C.:


MaTibOcSd  (I)

(where M is a combination of one or more selected from Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Y, a is a number of 1.7 to 2.3, b is a number of 2, c is a number of 4.7 to 5.3, and d is a number of 1.7 to 2.3).

公开(公告)号：US20240218534A1

公开(公告)日：2024-07-04

申请号：US18488425

申请日：2023-10-17

申请人： HITACHI, LTD.

发明人： Hiromasa TAKAHASHI ,  Naoto FUKATANI ,  Daiko TAKAMATSU ,  Shin YABUUCHI ,  Jun HAYAKAWA

IPC分类号： C25B9/50 ,  C25B9/19 ,  C25B11/052 ,  C25B15/08

CPC分类号： C25B9/50 ,  C25B9/19 ,  C25B11/052 ,  C25B15/08

摘要： A photocatalytic apparatus is provided that uses a photovoltaic action for both electrodes and conjugates a photocatalytic action with the photovoltaic action to efficiently perform material transformation on the basis of a redox reaction on the electrodes using light energy. A photocatalytic apparatus includes a first electrode functioning as an anode and a second electrode functioning as a cathode. The first electrode includes a first transparent conductive substrate having light transmittivity and electrical conductivity, a first light power generation layer that is disposed on the first transparent conductive substrate and absorbs light to generate electrons and holes, and a photocatalytic layer that is disposed on the first light power generation layer and catalyzes an oxidation reaction when being irradiated with light. The second electrode includes a second transparent conductive substrate having light transmittivity and electrical conductivity, a second light power generation layer that is disposed on the second transparent conductive substrate and absorbs light to generate electrons and holes, and a catalytic layer that is disposed on the second light power generation layer and catalyzes a reduction reaction.