Related Experiment Video
Updated: May 19, 2026

Synthesis and Characterization of Supramolecular Colloids
Published on: April 22, 2016
Unprecedented Hydrogen Evolution Reactions Based on the Accelerating Effect of [Co-Tb]-Supramolecular
Ruchika Gupta1, Syed Asim Ali2, Upma1
1Department of Chemistry, University of Delhi, Delhi 110007, India.
Abstract:
This study presents a series of 1-Tb/CdS binary heterojunctions, synthesized by combining 1-Tb (a Co3+-Tb3+-based supramolecular complex) and CdS in various weight ratios via a solvothermal process. These heterojunctions have been thoroughly characterized to elucidate their chemical, structural, and optoelectronic properties. The catalytic effectiveness of these heterojunctions was evaluated with respect to the hydrogen evolution reaction (HER), spanning photocatalytic, electrocatalytic, and photoelectrocatalytic processes. Significantly outperforming individual photocatalysts (CdS and 1-Tb) and other binary heterostructures, the 7.5-1-Tb/CdS heterojunction exhibited the highest catalytic HER efficiency. The exceptional catalytic performance of 7.5-1-Tb/CdS is attributed to a synergistic integration of 1-Tb and CdS, enabling a highly efficient Z-scheme heterojunction. This unique architecture enhances charge separation and transfer by leveraging the complementary electronic properties of the individual CdS and 1-Tb semiconductors while minimizing recombination losses. X-ray photoelectron spectroscopy, band structure analysis, photoluminescence, and electrochemical impedance spectroscopy further validated the Z-scheme mechanism, highlighting the optimal alignment of energy levels. Overall, this study highlights the potential of 1-Tb/CdS binary heterojunctions as robust and efficient catalysts for the HER. The simplicity of the synthesis process, coupled with the exceptional catalytic activity, offers a significant advancement in clean energy technologies, paving the way for sustainable hydrogen production.
More Related Videos
10:21Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
09:22Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
Published on: July 25, 2025
Related Concept Videos
Catalysis
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Thermal and Photochemical Electrocyclic Reactions: Overview
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation...