Helen Co., Ltd

Helen Co., Ltd We promote excellent research from Vietnam and bring innovative scientific discoveries to real-world applications.

At Helen Co., Ltd, we are committed to more than just creating products; we're dedicated to crafting a sustainable futur...
16/04/2024

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.

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.
14/04/2023

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

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.
30/07/2022

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

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.
11/02/2022

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

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 wit...
14/05/2021

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.

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.
10/10/2020

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

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 sci...
15/08/2020

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.

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...
24/07/2020

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.

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:
10/07/2020

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

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-organ...
25/06/2020

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"

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 integr...
25/06/2020

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"

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 ...
25/06/2020

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".


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Thursday 09:00 - 20:00
Friday 09:00 - 20:00

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