Ecological solar hydrogen: South Korean researchers made a groundbreaking advancement

Researchers from the **Daegu Gyeongbuk Institute of Science and Technology (DGIST)**, in collaboration with the universities of **Hanyang and Korea**, have developed [a pioneering technology](https://noticiasambientales.com/energia/australia-desarrolla-un-sistema-revolucionario-para-producir-hidrogeno-verde-a-partir-de-orina/) for **ecological solar hydrogen production** using quantum nanoclusters of cadmium selenide.

This **inorganic semiconductor**, the smallest one used in this field so far, is composed of only 26 atoms ((CdSe)₁₃) and has a size of less than 1 nanometer.

The discovery represents a turning point in [clean energy generation](https://noticiasambientales.com/energia/celulas-solares-organicas-energia-limpia-sin-toxicos/), eliminating the dependence on **fossil fuels and toxic materials**.

## Optimized Structure and Advances in Efficiency
**Quantum nanoclusters** are positioned between **molecules and nanocrystals**, with a key advantage: most of their atoms are exposed, increasing their **catalytic reactivity**.

However, their application has been limited due to **stability issues and low electrical conductivity**. To overcome these obstacles, researchers developed a **self-organized superstructure**, where the clusters are interconnected through **links between surface ligands**.

This design allows:
– Preserving the individual reactivity of each nanocluster.
– Stabilizing the overall structure to improve its performance.
– Optimizing electrical conductivity by doping with cobalt ions (Co²⁺).
– Increasing efficiency in the photocatalytic hydrogen production.

## Future Applications and Technology Potential
The study, published in **Nano Letters**, demonstrates for the first time that such a small **quantum semiconductor can function as an effective photocatalyst**.

Its applications include:
– **Renewable energies**, harnessing solar energy as the primary source.
– **Environmental treatment**, with sustainable solutions to reduce emissions.
– **Advances in quantum technology**, expanding the development of new materials.

## Global Impact of the Technology
The implementation of this innovation could transform the energy landscape, bringing benefits such as:
– **Massive reduction of greenhouse gases**, by replacing fossil fuels with **solar hydrogen**.
– **Efficient use of solar energy**, an endless and accessible source.
– **Reduction of polluting waste**, avoiding the use of hazardous materials like asbestos.
– **Versatility in distributed systems**, ideal for communities distant from large infrastructures.

This advancement places **materials science at the forefront of the energy transition**, accelerating the development of **sustainable, accessible, and scalable technologies**.

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