Helen Co., Ltd

At Helen Co., Ltd, we are committed to more than just creating products; we're dedicated to crafting a sustainable future through innovative science. Please have a look at a scientific paper we published recently in which we reported a new strategy to achieve stable conversion of CO2 into industrially valuable products such as formic acid and formate salts.

Multi‐metallic Layered Catalysts for Stable Electrochemical CO2 Reduction to Formate and Formic Acid Bismuth-based gas diffusion electrodes with a multi-metallic-layered structure are highly selective and stable for electrochemical CO2 reduction to formate and formic acid in neutral and acidic condi...

Scientist of Helen Co., Ltd publishes a paper in Chem. Eur. J reporting new NIR-emitting materials.

Lower Energy Excitation of Water Soluble Near‐Infrared Emitting Mixed‐Ligand Metallacrowns The best of both worlds: Water solubility of Zn16Ln(pyzHA)16 (H2pyzHA: pyrazine hydroxamic acid) or lower energy excitation of Zn16Ln(quinoHA)16 (H2quinoHA: quinoxaline hydroxamic acid) metallacrowns...

A research paper of Helen Co., Ltd is published in the Journal of the American Chemical Society.

Catalyst Regeneration via Chemical Oxidation Enables Long-Term Electrochemical Carbon Dioxide Reduction Electrochemical CO2 reduction (ECR) with industrially relevant current densities, high product selectivity, and long-term stability has been a long-sought goal. Unfortunately, copper (Cu) catalysts for producing valuable multicarbon (C2+) products undergo structural and morphological changes under E...

Scientist of Helen Co., Ltd authored a paper published in Chemical Science.

Tuning the photophysical properties of lanthanide(III)/zinc(II) ‘encapsulated sandwich’ metallacrowns emitting in the near-infrared range A family of Zn16Ln(HA)16 metallacrowns (MCs; Ln = YbIII, ErIII, and NdIII; HA = picoline- (picHA2−), pyrazine- (pyzHA2−), and quinaldine- (quinHA2−) hydroximates) with an ‘encapsulated sandwich’ structure possesses outstanding luminescence properties in the near-infrared (NIR) and suitabil...

Scientist of Helen Co., Ltd authored a new paper published in the Journal of Materials Chemistry A, in collaboration with Queen's University, McGill University, and The University of Sydney.

Electrochemical CO2 Reduction to Ethanol: From Mechanistic Understanding to Catalyst Design The electrochemical reduction of carbon dioxide (CO2) to chemicals is gaining great attention as a pragmatic solution for greenhouse gas mitigation and for the utilization of CO2 to produce useful fuels and chemical feedstocks using intermittent renewable energy sources. In recent years, strategies....

A new contribution from Helen Co., Ltd in collaboration with scientists at Queen's University.

Gas diffusion electrode design for electrochemical carbon dioxide reduction Anthropogenic carbon dioxide (CO2) emissions contribute to the greenhouse effect and global warming, which can lead to undesirable climate change and extinction of species. Besides the ongoing efforts to develop environmentally benign sources of energy and to advance technologies for the capture and...

Scientist of Helen Co., Ltd authored a review article published in ACS Catalysis. This work is in collaboration with scientists at Queen's University and Mc Gill University.

Fundamentals of Electrochemical CO2 Reduction on Single-Metal-Atom Catalysts Electrochemical carbon dioxide (CO2) reduction powered by renewable electricity offers a path to produce valuable products from CO2—an earth-scale human waste—and to store intermittent renewable energy in the form of chemical fuels. Recently, single metal atoms (SMAs) immobilized on a conductive...

Research from Helen Co., Ltd in collaboration with scientists at the University of Toronto, Oregon State University, and Korea Institute of Science and Technology was accepted for publication in Chemical Communications.

A recyclable metal–organic framework for ammonia vapour adsorption Herein, we present a new strategy to design metal–organic frameworks (M*Fs) as adsorbents for ammonia (NH3) vapour. The linking ligand is functionalized with a sterically hindered Lewis acidic boron (B) centre, allowing efficient capture of NH3 and easy recycling of the M*F by simply heating at lo...

Scientist of Helen Co., Ltd contributed to a paper published by Angew Chem. The link to the article is as follows:

CO2 Methanation via Amino Alcohol Relay Molecules Employing a Ruthenium Nanoparticle/Metal Organic Framework Catalyst Well‐dispersed Ru nanoparticles with narrow size distribution form on a metal–organic framework to afford a catalyst that displays excellent performance in the indirect and sustainable methanation of...

Research of Helen Co., Ltd is published in the Journal of Materials Chemistry A: "Design of Lanthanide-based Metal-organic Frameworks with Enhanced Near-infrared Emission"

Design of lanthanide-based metal–organic frameworks with enhanced near-infrared emission A strategy based on the use of ligand steric hindrance and metal doping is reported for the design and synthesis of near-infrared (NIR) emitting lanthanide-based metal–organic frameworks (M*Fs). The lanthanide ions are free of coordinated solvents, and the resulting NIR-M*Fs are highly emissive an...

Scientist of Helen Co., Ltd contributed to an article published in the Journal of Materials Chemistry A: "A novel integrated Cr(VI) adsorption–photoreduction system using M*F@polymer composite beads"

A novel integrated Cr(VI) adsorption–photoreduction system using M*F@polymer composite beads Herein, a novel integrated adsorption–photoreduction system, which captures highly mobile and toxic hexavalent chromium (Cr(vi)) from real-world water samples and reduces it to less mobile and benign Cr(iii) species, was designed. To do this, a known Zr-M*F, UiO-66, was functionalized with double ...

Scientist of Helen Co., Ltd contributed to research published in ChemCatChem: "Sustainable Hydrogenation of Nitroarenes to Anilines with Highly Active in-situ Generated Copper Nanoparticles".

Sustainable Hydrogenation of Nitroarenes to Anilines with Highly Active in‐situ Generated Copper Nanoparticles Click or tap to learn more.