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Related Experiment Video

Updated: Jul 9, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

From silver nanoparticles to nanoclusters: enhanced oxygen evolution electrocatalysis through size reduction.

Sheetal Sheetal¹, Usama Ansari¹, Sanjeeve Thakur¹

¹Department of Chemistry, Netaji Subhas University of Technology, Dwarka Sector-3, Dwarka, Delhi, 110078, India. nancy@nsut.ac.in.

|July 7, 2026

Summary

Silver nanoclusters (AgNCs) show excellent performance for the oxygen evolution reaction (OER), a key step in water splitting. These L-Proline-stabilized AgNCs (L-Pro-AgNCs) are efficient and stable electrocatalysts.

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Published on: June 16, 2014

Area of Science:

Materials Science
Electrochemistry
Catalysis

Background:

Metal nanoclusters (MNCs) offer unique properties for catalysis.
Oxygen evolution reaction (OER) is crucial for water splitting but remains challenging.
Applications of MNCs in OER are less explored.

Purpose of the Study:

Synthesize and investigate L-Proline-stabilized silver nanoclusters (L-Pro-AgNCs) as electrocatalysts for OER.
Compare the OER performance of L-Pro-AgNCs with silver nanoparticles (AgNPs) and RuO2.
Highlight the size-dependent catalytic advantages of silver nanoclusters.

Main Methods:

Synthesis of fluorescent L-Pro-AgNCs.
Electrocatalytic evaluation using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry.
Comparison with L-Pro-AgNPs and commercial RuO2.

Main Results:

L-Pro-AgNCs demonstrated superior OER activity with a low overpotential (~250 mV) and Tafel slope (116 mV dec⁻¹).
Enhanced electrochemical active surface area and charge-storage capability observed for L-Pro-AgNCs.
Faster interfacial electron transfer and excellent stability (>16 h) confirmed.

Conclusions:

Silver nanoclusters exhibit significant size-dependent electrocatalytic advantages for OER.
L-Pro-AgNCs are efficient and stable electrocatalysts for sustainable energy conversion.
This work establishes MNCs as promising candidates for OER applications.