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Search Results - sergio+garcia-segura
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Photoelectrocatalytic-Enabled Flexible Polymeric Optoelectrodes
Background Photoelectrocatalytic processes (PECs) combine photocatalysis and electrochemical principles to enhance charge carrier generation and stability within nanomaterials (NMs). Nano-enabled PECs can be used for water purification or hydrogen production applications. Current PEC designs face challenges due to low energy efficiencies, because most...
Published: 12/13/2024
|
Inventor(s):
Paul Westerhoff
,
Sergi Garcia-Segura
,
Tzu-Heng Wang
Keywords(s):
Category(s):
Physical Science
,
Advanced Materials/Nanotechnology
,
Energy & Power
,
Environmental Remediation/Wastewater Treatment
Nano-Sized Boron-Doped Diamond-Enabled Electrodes for Water Treatment and Chemical Sensing
Background Electrochemical sensing is a compact process used to detect chemicals in aqueous solutions (e.g., water, bodily fluids, foods). It can also be used to treat pollutants in drinking and industrial wastewaters. Electrochemical oxidation can generate hydroxyl radicals, which are effective in degrading organic contaminants in water, including...
Published: 11/6/2024
|
Inventor(s):
Paul Westerhoff
,
Sergi Garcia-Segura
,
Shahnawaz Sinha
,
Rishabh Bansal
,
Rafael Verduzco
,
Michael Wong
Keywords(s):
Environmental
Category(s):
Physical Science
,
Energy & Power
,
Advanced Materials/Nanotechnology
,
Semiconductors, Materials & Processes
Electro-Regeneration of PFAS-Laden and Spent Sorbents for Reuse as Sustainable Water Treatment
Background Adsorption is the main water treatment technology that is commercially used to remove per- and polyfluoroalkyl substances (PFAS) from water. These substances are in thousands of everyday products due to their high stability and chemical resistance, but are non-biodegradable and can pose risks to human health. Current adsorption techniques...
Published: 6/14/2024
|
Inventor(s):
Sergi Garcia-Segura
,
Gamze Ersan
,
Francois Perreault
,
Mahmut Ersan
Keywords(s):
Category(s):
Physical Science
,
Environmental Remediation/Wastewater Treatment
,
Alternative Energy/Biofuels/Bioplastics/Algae
Atomic Hydrogen Provision by Cobalt Sites for Superior Ammonia Production
Background Ammonia (NH3) is a valuable compound for industrial, agricultural, and water treatment applications. The typical method for large-scale production of ammonia is the Haber-Bosch (HB) process, which uses hydrogen and nitrogen as reagents under high pressure and temperature. However, this process generates over 450 million tons of CO2 annually,...
Published: 5/8/2024
|
Inventor(s):
Sergi Garcia-Segura
,
Gabriel Cerron Calle
Keywords(s):
Category(s):
Environmental Remediation/Wastewater Treatment
,
Alternative Energy/Biofuels/Bioplastics/Algae
,
Physical Science
,
Applied Technologies
Mechanical Flexible Electrodes for Sensing: Self-Standing Conductive Polymer-Metal Nanocomposites
Background Electrochemical sensors offer many advantages over traditional analytical instruments and are widely used in biomedical, environmental, and industrial applications. Mechanically flexible electrodes in electrochemical sensors are designed to be conformable to the surface they are placed on, and ensure better contact and adaptability to challenging...
Published: 4/10/2024
|
Inventor(s):
Sergi Garcia-Segura
,
Rishabh Bansal
,
Vanessa Hald
Keywords(s):
Category(s):
Physical Science
,
Bioanalytical Assays, Chemistries & Devices
,
Advanced Materials/Nanotechnology
Cobalt-Copper Nanoenabled Electrodes Enhance Selective Reduction of Nitrate to Ammonia for Resource Recovery
Background Electrocatalytic nitrogen fixation could enhance the sustainability of global ammonia production. However, overcoming the high energy barrier to break the triple bond of dinitrogen (N2) has proved to be a challenge. Electrochemical reduction of nitrate (ERN) is an alternative solution, but ERN currently relies on platinum group metals (PGMs)...
Published: 6/5/2023
|
Inventor(s):
Gabriel Cerron Calle
,
Ana dos Santos Fajardo
,
Carlos Sanchez Sanchez
,
Sergio Garcia-Segura
Keywords(s):
Category(s):
Energy & Power
,
Environmental Remediation/Wastewater Treatment
,
Environmental
,
Physical Science
,
Advanced Materials/Nanotechnology
Portable Photoelectrocatalytic Device for Water Disinfection
Bacteria, viruses, and other harmful microorganisms pose a significant pathogenic health-related risk to safe drinking water. Disinfection by chlorination is commonly practiced, however, chlorine is a toxic chemical that typically requires careful storage and proper handling. While ultraviolet (UV) disinfection can be effective, UV-based processes...
Published: 4/27/2023
|
Inventor(s):
Paul Westerhoff
,
Francois Perreault
,
Sergio Garcia-Segura
,
Shahnawaz Sinha
,
Ana Barrios
,
Renato Montenegro Ayo
Keywords(s):
Environmental
,
Water
,
Water Purification
Category(s):
Physical Science
,
Environmental Remediation/Wastewater Treatment
,
Manufacturing/Construction/Mechanical
,
Environmental
,
Semiconductors, Materials & Processes
Highly Reactive Cu-Pt Bimetallic 3D-Electrodes for Selective Nitrate Reduction to Ammonia
Background Reducing nitrate from water streams is an untapped source of nitrogen that could be used for decentralized ammonia production at ambient conditions for agricultural use with a significantly lower cost. Decentralized production of ammonia in rural areas can minimize environmental impacts of the Haber-Bosch process (including produced ammonia...
Published: 2/23/2023
|
Inventor(s):
Sergio Garcia-Segura
,
Gabriel Cerron Calle
,
Ana dos Santos Fajardo
,
Carlos Sanchez Sanchez
Keywords(s):
Category(s):
Physical Science
,
Environmental Remediation/Wastewater Treatment
,
Environmental
,
Advanced Materials/Nanotechnology