公开(公告)号：US20210130204A1

公开(公告)日：2021-05-06

申请号：US17046558

申请日：2019-04-09

申请人： King Abdullah University of Science and Technology

发明人： Shafeer Kalathil ,  Krishna P. Katuri ,  Pascal E. Saikaly

IPC分类号： C02F3/00 ,  C02F1/72 ,  C02F3/34 ,  C25B1/04 ,  C25B11/073

摘要： Bacteria-based catalysts including a bacterium and one or more metal oxides are disclosed. The metal oxides are dispersed on the surface of the bacterium. The bacterium can be an electrogenic bacterium, which employs an extracellular electron transport pathway to transfer metabolically generated electrons to cell-exterior. The bacteria-based catalysts can be made by: (a) oxidizing a substrate molecule by a bacterium to generate electrons; (b) transporting the electrons to one or more metal oxide precursors; and (c) reducing the metal oxide precursors to metal oxides. The bacteria-based catalysts disclosed herein can be used in electrocatalysis, photocatalysis, or chemical catalysis. For example, they can catalyze oxygen evolution reaction (OER) and outperform commercial metal oxide catalyst for OER with superior operational stability.

公开(公告)号：US11701639B2

公开(公告)日：2023-07-18

申请号：US17266333

申请日：2019-08-06

申请人： King Abdullah University of Science and Technology

发明人： Srikanth Pedireddy ,  Krishna P. Katuri ,  Veerraghavulu Sapireddy ,  Pascal E. Saikaly

IPC分类号： B01J23/70 ,  C25B11/089 ,  C25B11/081 ,  C25B11/065 ,  C25B11/054 ,  C25B11/075 ,  B01J21/18 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/72 ,  B01J23/745 ,  B01J35/00 ,  B01J35/10 ,  B01J37/04 ,  B01J37/08 ,  B01J37/36 ,  B22F1/18 ,  B22F1/07

CPC分类号： B01J23/70 ,  B01J21/18 ,  B01J23/42 ,  B01J23/44 ,  B01J23/462 ,  B01J23/468 ,  B01J23/72 ,  B01J23/745 ,  B01J35/004 ,  B01J35/0033 ,  B01J35/1019 ,  B01J35/1023 ,  B01J35/1038 ,  B01J35/1042 ,  B01J37/04 ,  B01J37/084 ,  B01J37/36 ,  B22F1/07 ,  B22F1/18 ,  C25B11/054 ,  C25B11/065 ,  C25B11/075 ,  C25B11/081 ,  C25B11/089

摘要： Carbon-based single metal atom or bimetallic, trimetallic, or multimetallic alloy transition metal-containing catalysts derived from exoelectrogen bacteria and their methods of making and using thereof are described. The method comprising the steps of: (a) preparing a solution medium comprising at least an electron donor and an electron acceptor comprised of one or more salts of a transition metal; (b) providing exoelectrogen bacterial cells and mixing the exoelectrogen bacterial cells into the solution medium of step (a); (c) incubating the solution medium of step (b); (d) isolating the exoelectrogen bacterial cells from the incubated solution medium of step (c); and (e) pyrolyzing the exoelectrogen bacterial cells resulting in formation of the catalyst. The electron donor can be formate, acetate, or hydrogen.

公开(公告)号：US20210316290A1

公开(公告)日：2021-10-14

申请号：US17266333

申请日：2019-08-06

申请人： King Abdullah University of Science and Technology

发明人： Srikanth Pedireddy ,  Krishna P. Katuri ,  Veerraghavulu Sapireddy ,  Pascal E. Saikaly

IPC分类号： B01J35/00 ,  B01J21/18 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/745 ,  B01J23/72 ,  B01J35/10 ,  B01J37/08 ,  B01J37/36 ,  B01J37/04 ,  C25B11/054 ,  C25B11/065 ,  C25B11/081 ,  C25B11/075 ,  C25B11/089

摘要： Carbon-based single metal atom or bimetallic, trimetallic, or multimetallic alloy transition metal-containing catalysts derived from exoelectrogen bacteria and their methods of making and using thereof are described. The method comprising the steps of: (a) preparing a solution medium comprising at least an electron donor and an electron acceptor comprised of one or more salts of a transition metal; (b) providing exoelectrogen bacterial cells and mixing the exoelectrogen bacterial cells into the solution medium of step (a); (c) incubating the solution medium of step (b); (d) isolating the exoelectrogen bacterial cells from the incubated solution medium of step (c); and (e) pyrolyzing the exoelectrogen bacterial cells resulting in formation of the catalyst. The electron donor can be formate, acetate, or hydrogen.