Active, Stable, and Abundant Photocatalytic Materials for Hydrogen Fuels

A fundamental challenge to the worldwide adoption of solar energy is its intermittent nature. Solar energy must be transformed and stored. The most abundant agent to store solar energy is water. Photocatalysis for Water Splitting (PWS) with sunlight is an essentially limitless and greenhouse-gas free way to store and transform solar energy. The products of PWS are either hydrogen gas, or they are combined with CO2 to make fuels such as alcohols, methane, or higher alkanes. These fuels can be distributed with existing infrastructures and combusted with existing technology in an entirely CO2 neutral system. The activity, stability, and efficiencies of state-of-the-art PWS catalysts do not allow for widespread adoption.


In collaboration with the other groups in the UAlberta and UCalgary, we will combine fundamental studies and cutting-edge, greatly accelerated photocatalyst development with leads/guidance from the Machine-Learning/Materials Genomics Initiative. This unique, combined approach will develop next generation, earth abundant photocatalysts with seismic improvements in activity, efficiency, stability, and longevity over the current state-of-the-art systems.


A key objective is to replace precious metals like Platinum and Iridium with earth-abundant alternatives. The fundamental studies, will develop highly advanced molecular, polymeric, and materials photocatalysts/co-catalysts made of earth-abundant atoms. Co-catalysts will be developed that significantly reduce the kinetic barriers to water oxidation or CO2 reduction, thereby increasing by orders of magnitude the activity and efficiency of the photocatalysts. Hits identified by the Materials Genomics Initiative will be combined with the results from the fundamental studies. The resulting new photocatalysts will be incorporated into advanced prototype units by collaboration with academic and industrial groups within the University, the Province, and across Canada.

Active, Stable, and Abundant Photocatalytic Materials for Hydrogen Fuels: Solar Fuels by Tandem Photocatalysis

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri

Event

Active, Stable, and Abundant Photocatalytic Materials for Hydrogen Fuels: Solar fuels by tandem photocatalysis

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri

Conference/Workshop

Calgary Lecture Series; Energy Panel: To provide continuing education opportunity in Calgary that showcases excellence and innovation at the University of Alberta

M Anne Naeth, John R Parkins, Steven Bergens, Maggie Cascadden

Event

Chemistry demos for kids, Mad Science

Steven Bergens

Event

Climate Change on Earth and Mars

Steven Bergens

Event

Core-shell titanium dioxide@titanium nitride nanotube arrays for optical limiters and near-infrared sensitive optoelectronics

Karthik Shankar, Ryan Kisslinger, Sheng Zeng, Ajay Manuel, Saralyn Riddell

Conference/Workshop

Earth abundant 1D & 2D nanomaterial sensitized TiO2 nanotube arrays for visible light driven water-splitting

Karthik Shankar, Ryan Kisslinger, Ujwal Thakur, Pawan Kumar, Kazi Alam

Conference/Workshop

Edmonton High School Students, TeamUp Science Summer Camp (Enrichment Program)

Steven Bergens, Mona Amiri, Jaya Pal, Lan Truong

Event

Edmonton Home-schooled Students, Energy week Enrichment Program

Steven Bergens, Octavio Martinez Perez, Mona Amiri

Event

Edmonton Senior plan staff & Riga (Latvia) Delegates

Steven Bergens, Octavio Martinez Perez, Mona Amiri

Event

Energy Materials Challenge Program

Steven Bergens

Event

Energy Transitions

Steven Bergens

Conference/Workshop

Flame Annealed TiO2 and its Heterojunctions for the Production of Solar Fuels

Karthik Shankar, Kazi Alam

Conference/Workshop

Modular Construction of Water Oxidation Photoanodes by Covalent Bonding and Self-Assembly

Steven Bergens, Chao Wang, Mona Amiri

Conference/Workshop

Modular Construction of Water Oxidation Photoanodes by Covalent Bonding and Self-Assembly

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri

Conference/Workshop

Modular construction of Ru- and Ir- chromophore photoanodes by covalent bonding and self-assembly

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri

Conference/Workshop

Molecular Brick Building Sets for Chromophores and Catalysts for Solar-Powered Water Splitting and CO2 Reduction

Steven Bergens, Octavio Martinez Perez, Mona Amiri, Jaya Pal, Prabin Nepal

Conference/Workshop

Novel Materials for Clean and Sustainable Energy CHALLENGE PROGRAM WORKSHOP

Karthik Shankar

Conference/Workshop

Optical Modelling of Non-Lithographically Fabricated Photonic Crystal- and Plasmonic- Photocatalysts

Karthik Shankar, Collin VanEssen, Ehsan Vahidzadeh, Sheng Zeng, Piyush Kar, Ajay Manuel, Yun Zhang

Conference/Workshop

Photoelectrochemical solar cells for water oxidation and CO2 reduction

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri

Event

Photoelectrochemical solar cells for water oxidation and CO2 reduction reactions

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri

Event

Photoelectrochemical solar cells for water oxidation and CO2 reduction systems

Steven Bergens, Chao Wang, Mona Amiri

Event

Presentation on Solar Energy and Solar Fuel

Steven Bergens

Event

Renewable Energies presentation and hands-on photoelectrochemistry experiment

Steven Bergens, Mona Amiri

Event

Renewable Energies presentation and hands-on photoelectrochemistry experiment

Steven Bergens, Octavio Martinez Perez, Mona Amiri

Event

Renewable Energies presentation and hands-on photoelectrochemistry experiment

Steven Bergens, Octavio Martinez Perez

Event

Renewable Energies, Worldwide Universities Network (2 groups)

Steven Bergens, Mona Amiri

Event

Robust Plasmonic Glasses using nanoporous TiO2 embedded with Au nanoparticles

Karthik Shankar, Ryan Kisslinger, Kazi Alam, Sheng Zeng, Ajay Manuel

Conference/Workshop

Shaping the Future of Energy/ Solar Energy

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri, Jaya Pal

Event

Skype a Scientist Program, 3rd grade Students (Rosemary Heights School)

Steven Bergens, Mona Amiri

Event

Skype a Scientist Program, 4th grade Students

Steven Bergens, Mona Amiri

Event

Skype a Scientist Program, 6th grade Students (John Knox Christian School)

Steven Bergens, Octavio Martinez Perez, Mona Amiri

Event

Skype a Scientist Program, 6th grade Students (John Knox Christian School)

Steven Bergens

Event

Solar Fuels

Steven Bergens

Conference/Workshop

Sustainable Energy, Sustainability in Higher Education in Canada (SHECA 2019)

Steven Bergens, Octavio Martinez Perez, Mona Amiri

Event

Telus World Science Center, Energy week

Steven Bergens, Octavio Martinez Perez, Mona Amiri

Event

There’s more than enough solar power to meet our energy needs: the problem is storing it

Steven Bergens, Mona Amiri

Misc: Interview

TiO2 nanotube and nanorod arrays: Playgrounds to study unusual heterojunctions, hot electron phenomena and nanophotonic effects

Karthik Shankar

Conference/Workshop

Tsinghua University and UAlberta Student Workshop

Steven Bergens, Chao Wang

Visiting Student (outgoing)

Visible Light Responsive, Earth-Abundant Heterojunction Photocatalysts

Karthik Shankar

Conference/Workshop

Excellence in Teaching

Steven Bergens

Award

Science Outreach

Steven Bergens

Award

A Simple Imidazole Derivative of 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene Absorbed on Silica Gel for Photosynthetic Isomerizations of Olefins in Batch and Flow

Steven Bergens, Loorthuraja Rasu

Scholarly Refereed Journal

Active, Simple Iridium--Copper Hydrous Oxide Electrocatalysts for Water Oxidation

Steven Bergens, Chao Wang

Scholarly Refereed Journal

All-solid-state formation of titania nanotube arrays and their application in photoelectrochemical water splitting

Karthik Shankar, Pawan Kumar, Najia Mahdi, Yun Zhang

Scholarly Refereed Journal

Arrays of TiO2 nanorods embedded with fluorine doped carbon nitride quantum dots (CNFQDs) for visible light driven water splitting

Karthik Shankar, Ryan Kisslinger, Sahil Patel, Ujwal Thakur, Pawan Kumar, Kazi Alam, Sheng Zeng, Piyush Kar

Scholarly Refereed Journal

Asymmetric Hydrogenation of Esters and Efforts Towards Photohydrogenation

Riley Endean

PhD Thesis

Carbazole-Cyanobenzene Dyes Electrografted to Carbon or Indium-Doped Tin Oxide Supports for Visible Light-Driven Photoanodes and Olefin Isomerizations.

Steven Bergens, Mona Amiri, Loorthuraja Rasu

Scholarly Refereed Journal

Carbazole-cyanobenzene dyes electrografted to carbon or ITO support for visible light-driven photoanodes and olefin isomerizations (USPTO)

Steven Bergens, Mona Amiri, Loorthuraja Rasu

Patent

Collaborative Ultrafast Spectroscopic Laser (CUSL) facility

Karthik Shankar, Al Meldrum, Juli Gibbs, Frank Hegmann

Misc: Canada Foundation for Innovation (CFI) John R. Evans Leade

Core-shell titanium dioxide-titanium nitride nanotube arrays with near-infrared plasmon resonances

Karthik Shankar, Najia Mahdi, Piyush Kar

Scholarly Refereed Journal

Developing Catalysts for Energy Conversion Devices

Steven Bergens, Chao Wang

PhD Thesis

Effect of morphology on the photoelectrochemical performance of nanostructured Cu2O photocathodes

Karthik Shankar, Pawan Kumar, Kazi Alam, Ehsan Vahidzadeh, Sheng Zeng, Piyush Kar, Ajay Manuel, Lian Shoute

Scholarly Refereed Journal

Energy Challenge Proposals

Steven Bergens

Misc: proposal

Energy Challenge Proposals

Karthik Shankar, Steven Bergens

Misc: Proposal

Enhanced Charge Separation in g-C3N4–BiOI Heterostructures for Visible Light Driven Photoelectrochemical Water Splitting

Karthik Shankar, Ujwal Thakur, Pawan Kumar, Kazi Alam, Sheng Zeng, Piyush Kar

Scholarly Refereed Journal

Flexible and Ultrasoft Inorganic 1D Semiconductor and Heterostructure Systems Based on SnIP

Karthik Shankar, Ujwal Thakur, Pawan Kumar

Scholarly Refereed Journal

Harvesting Hot Holes in Plasmon-Coupled Ultrathin Photoanodes for High-Performance Photoelectrochemical Water Splitting

Karthik Shankar, Pawan Kumar, Kazi Alam, Ehsan Vahidzadeh, Sheng Zeng, Saralyn Riddell, Narendra Chaulagain

Scholarly Refereed Journal

Heterojunctions based on 2D Carbon-Based Semiconductor Nanomaterials for Photocatalysis and Photovoltaics

Karthik Shankar

Invited/Keynote

Heterojunctions based on 2D Carbon-Based Semiconductor Nanomaterials for Photocatalysis and Photovoltaics

Karthik Shankar

Invited/Keynote

Heterojunctions of halogen-doped carbon nitride nanosheets and BiOI for sunlight-driven water-splitting

Karthik Shankar, Pawan Kumar, Kazi Alam, Ehsan Vahidzadeh, Sheng Zeng, Piyush Kar, Ankur Goswami

Scholarly Refereed Journal

Heterojunctions of mixed phase TiO2 nanotubes with Cu, CuPt, and Pt nanoparticles: interfacial band alignment and visible light photoelectrochemical activity

Karthik Shankar, Ryan Kisslinger, Najia Mahdi, Piyush Kar, Yun Zhang

Scholarly Refereed Journal

Hot Electron-mediated Plasmonic Photocatalysis Using Heterojunctions of Noble Metal Nanoparticles and Semiconductor Nanowires/Nanotubes

Karthik Shankar

Invited/Keynote

Hot Electrons in TiO2-Noble Metal Nano-Heterojunctions: Fundamental Science and Applications in Photocatalysis

Karthik Shankar, Ajay Manuel

Scholarly Refereed Journal

Investigation into the properties of a ruthenium(polypyridyl)-NHC compound

Loorthuraja Rasu

Scholarly Refereed Journal

Modular Construction of Photoanodes with Covalently Bonded Ru- and Ir-Polypyridyl Visible Light Chromophores

Steven Bergens, Octavio Martinez Perez, Chao Wang, Mona Amiri

Scholarly Refereed Journal

Nanosheets of carbon nitride and nitrogen doped graphene for photovoltaics and photocatalysis

Karthik Shankar

Invited/Keynote

Noble Metal Free, Visible Light Driven Photocatalysis Using TiO2 Nanotube Arrays Sensitized by P-doped C3N4 Quantum Dots

Karthik Shankar, Ryan Kisslinger, Ujwal Thakur, Pawan Kumar, Kazi Alam, Sheng Zeng, Piyush Kar, Ajay Manuel, Yun Zhang, Vladimir K Michaelis, Guy Bernard

Scholarly Refereed Journal

Novel semiconductor, Re-catalyst assemblies for CO2 reduction

Steven Bergens, Octavio Martinez Perez

Scholarly Refereed Journal

Novel NHC-Bonded Ru-Polypyridine and Organic Dyes in Photoanodes that Operate in Alkaline Media

Steven Bergens, Mona Amiri, Loorthuraja Rasu

Scholarly Refereed Journal

Photocatalytic mechanism control and study of carrier dynamics in CdS@C3N5 core-shell nanowires

Karthik Shankar, Pawan Kumar, Kazi Alam, Ajay Manuel, Frank Hegmann, Vladimir K Michaelis, Charles Jensen, Guy Bernard, David Purschke, Riley Hooper, Narendra Chaulagain, John Garcia

Scholarly Refereed Journal

Plasmonic Catalysis: Fundamentals, Materials, Methods And Challenges

Karthik Shankar

Invited/Keynote

Plexcitonics – Fundamental principles and optoelectronic applications

Karthik Shankar, Aaron Kirkey, Najia Mahdi, Ajay Manuel

Scholarly Refereed Journal

Solid-Phase Synthesis and Photoactivity of Ru-Polypyridyl Visible Light Chromophores Bonded Through Carbon to Semiconductor Surfaces

Steven Bergens, Octavio Martinez Perez, Mona Amiri, Prabin Nepal, Riley Endean

Scholarly Refereed Journal

Sunlight-driven water-splitting using two dimensional carbon based semiconductors

Karthik Shankar, Pawan Kumar

Scholarly Refereed Journal

Using 1D and 2D Nanomaterials in Halide Perovskite Solar Cells to Enhance Light Harvesting and Charge Collection

Ujwal Thakur

PhD Thesis

Vapor Deposition of Semiconducting P Allotropes into TiO2 Nanotube Arrays for Photo-Electrocatalytic Water Splitting

Karthik Shankar, Ryan Kisslinger, Pawan Kumar, Sheng Zeng, Piyush Kar

Scholarly Refereed Journal

Vapor growth of binary and ternary phosphorus-based semiconductors into TiO2 nanotube arrays and application in visible light driven water splitting

Karthik Shankar, Ryan Kisslinger, Ujwal Thakur, Pawan Kumar, Piyush Kar

Scholarly Refereed Journal

Water-splitting photoelectrodes consisting of heterojunctions of carbon nitride with a p-type low bandgap double perovskite oxide

Karthik Shankar, Ujwal Thakur, Pawan Kumar, Kazi Alam, Devika Laishram

Scholarly Refereed Journal