Advanced Energy Materials 2022, 12, 2201452.
Superaerophobic Polyethyleneimine Hydrogels for Improving Electrochemical Hydrogen Production by Promoting Bubble Detachment.
We report that a hydrogel coating can improve the performance of electrodes for electrochemical hydrogen production even without additional catalysts. Porous hydrogels facilitate the removal of adsorbed hydrogen gas bubbles during water electrolysis and allow more efficient hydrogen production.
Nanoscale 2021, 13, 20374-20386.
Molecular Design of Heterogeneous Electrocatalysts Using Tannic Acid-Derived Metal–Phenolic Networks.
In this minireview, we summarize the development of various metal-phenolic network (MPN)-based electrocatalysts for diverse electrochemical reactions, such as the hydrogen evolution reaction, the oxygen evolution reaction, the CO2 reduction reaction, and the N2 reduction reaction. We believe that this article provides insight into molecularly designable heterogeneous electrocatalysts based on MPNs and guidelines for broadening the applications of MPNs as electrocatalysts..
Chemistry of Materials 2021, 33, 8705-8711.
Benzothiazole-Based Covalent Organic Frameworks with Different Symmetrical Combinations for Photocatalytic CO2 Conversion.
The porosity of covalent organic frameworks can be tuned by the different symmetrical combination of building units. The larger-pore-sized COF delays a photoinduced charge recombination and thus displays an enhanced CO2-to-CO conversion.
Journal of Materials Chemistry A 2021, 9, 13874-13882.
Atomically-Dispersed Cobalt Ions on Polyphenol-Derived Nanocarbon Layers to Improve Charge Separation, Hole Storage, and Catalytic Activity of Water-Oxidation Photoanodes.
It is demonstrated that N-doped graphene quantum dots derived from natural polyphenol tannic acid can form ultrathin and stable layers on a BiVO4 photoanode together with Co2+ ions by a simple dipping method. Graphitization, N-doping, abundant phenolic groups, and accommodation of Co ions allow more effi cient photoelectrochemical water oxidation by improving charge separation, hole storage, and catalytic activity of the underlying BiVO4 photoanodes.
Nanoscale Hozions 2021, 6, 379-385.
Selective Photocatalytic production of CH4 Using Zn-Based Polyoxometalate as a Nonconventional CO2 Reduction Catalyst.
We report the synthesis of Zn-based polyoxometalate (ZnPOM) and its application in the photocatalytic CO2RR. Unlike conventional Zn-based catalysts that produce CO, ZnPOM can selectively catalyze the production of CH4 in the presence of an Ir-based photosensitizer (TIr3) through the photocatalytic CO2RR.
Advanced Functional Materials 2020, 30, 1908492.
Modulating Charge Separation Efficiency of Water Oxidation Photoanodes with Polyelectrolyte-Assembled Interfacial Dipole Layers.
In this article, we and co‐workers describe an approach to enhance the charge separation efficiency of water oxidation photoanodes by the interfacial dipole layer created by modifying their surface with polyelectrolyte multilayers assembled via a layer‐by‐layer technique. This approach is effective regardless of the pH and type of photoelectrodes, and potentially provides insights into the design and fabrication of efficient solar‐to‐chemical energy conversion devices.
Advanced Functional Materials 2019, 29, 1906407.
Modular Layer-by-Layer Assembly of Polyelectrolytes, Nanoparticles, and Molecular Catalysts into Solar-to-Chemical Energy Conversion Devices.
In this article, we and co‐workers suggest the fabrication of solar‐to‐chemical energy conversion devices using a layer‐by‐layer assembly method. Rational and precise assembly of plasmonic and upconversion nanoparticles, polyelectrolytes, and molecular catalysts enables more efficient light‐harvesting, surface passivation, and catalysis, respectively, for solar water oxidation.
ACS Nano 2019, 13, 467-475.
Interface Engineering of Hematite with Nacre-Like Catalytic Multilayers for Solar Water Oxidation.
Tailored assembly of polyelectrolytes, graphene oxide nanosheets, and molecular inorganic catalysts into a nacre-like multilayer structure is used to fabricate efficient water oxidation photoanodes. The deposition of nacre-like catalytic multilayers on hematite facilitates both the separation of photogenerated charge carriers and interfacial electrochemical reactions, enabling efficient photoelectrochemical water oxidation under mild conditions.
European Journal of Inorganic Chemistry 2019, 2019, 2040-2057.
Tailored Assembly of Molecular Water Oxidation Catalysts on Photoelectrodes for Artificial Photosynthesis.The Cover Feature shows a strategy to assemble and immobilize efficient molecular electrocatalysts on the desired photoelectrode for artificial photosynthesis. The integration strategies include covalent modification, bottom‐up self‐assembly, physical confinement, and electrostatic layer‐by‐layer assembly. These strategies enable the tailored assembly of molecular electrocatalysts for the fabrication of efficient artificial photosynthetic devices.
Green Chemistry 2018, 20, 3732-3742.
Fully Solution-Processable Cu2O-BiVO4 Photoelectrochemical Cells for Bias-Free Solar Water Splitting.
We could successfully fabricate an efficient and stable photoelectrochemical (PEC) cell for unassisted solar water splitting without the use of toxic/hazardous chemicals and energetic processes, which have been inevitably employed. A fully solution-processable bias-free PEC cell was readily prepared by using a Cu2O photocathode and a BiVO4 photoanode, which were modified with catalytic multilayers (CMs) for hydrogen and oxygen evolution reactions (HER and OER), respectively, using simple and versatile layer-by-layer (LBL) assembly.