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Updated: May 6, 2026

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

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Published on: August 23, 2012

Photocatalytic Hydrogen Production Using Semiconductor (CdSe)₁₃ Clusters.

Soyeon Lee¹, Yeji Lee², Hafiz Ghulam Abbas^3,4

¹Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea.

|April 23, 2025

Summary

Atomically precise cadmium selenide (CdSe)₁₃ clusters were stabilized into suprastructures for enhanced photocatalytic hydrogen production. Cobalt doping and bipyridine cocatalyst significantly boosted hydrogen evolution activity.

Keywords:

(CdSe)13 clusters doping photocatalysts solar hydrogen suprastructures

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Area of Science:

Materials Science
Nanotechnology
Photocatalysis

Background:

Atomically precise (CdSe)₁₃ clusters are the smallest cadmium selenide semiconductors, bridging the gap between nanocrystals and molecules.
Their potential as photocatalysts is hindered by low structural stability in aqueous environments.

Purpose of the Study:

To develop stable (CdSe)₁₃ clusters for efficient photocatalytic hydrogen production.
To investigate the synergistic effects of cobalt (Co²⁺) doping and bipyridine cocatalysis on cluster stability and performance.

Main Methods:

Inducing self-assembly of (CdSe)₁₃ clusters into suprastructures to enhance stability.
Incorporating Co²⁺ dopants and bipyridine as a cocatalyst.
Evaluating hydrogen evolution activity through photocatalysis experiments.
Utilizing theoretical calculations to understand the mechanism of hydrogen adsorption.

Main Results:

Co²⁺-doped (CdSe)₁₃ suprastructures exhibited improved structural stability in aqueous media.
The synergistic combination of Co²⁺ doping and bipyridine significantly enhanced hydrogen evolution activity compared to undoped counterparts.
Theoretical calculations confirmed that Co²⁺ and bipyridine lower the hydrogen adsorption energy, facilitating catalysis.

Conclusions:

Self-assembled, Co²⁺-doped (CdSe)₁₃ suprastructures with bipyridine are promising for sustainable hydrogen production.
This approach overcomes the stability limitations of individual clusters, enabling efficient water splitting.
The findings pave the way for designing advanced semiconductor cluster-based photocatalysts.