Stable Layered Semiconductive Cu(I)-Organic Framework for Efficient Visible-Light-Driven Cr(VI) Reduction and H₂...

Area of Science:

• Materials Science
• Environmental Chemistry
• Photocatalysis

Background:

• Metal-organic frameworks (MOFs) are promising for environmental restoration and sustainable energy.
• Photocatalysis offers a green approach for pollutant degradation and energy production.

Purpose of the Study:

• To synthesize and characterize a novel 2D Cu(I)-based MOF for photocatalytic applications.
• To evaluate the MOF's efficiency in reducing Cr(VI) and producing H2 under visible light.

Main Methods:

• A new 2D Cu(I)-based MOF was constructed using an anthracene-based bipyridine ligand.
• Photocatalytic experiments were conducted under visible light with methanol as a scavenger.
• Cr(VI) reduction and H2 evolution efficiencies were measured.

Main Results:

• The synthesized MOF exhibits a narrow band gap (2.13 eV) and high chemical stability (pH 2-13).
• 95% of Cr(VI) was reduced to Cr(III) in 10 minutes under visible light.
• The MOF demonstrated high activity for H2 evolution without co-catalysts or photosensitizers.

Conclusions:

• The novel 2D Cu(I)-MOF is a stable and highly efficient photocatalyst for environmental remediation and sustainable energy.
• The MOF outperforms its ligand in photocatalytic Cr(VI) reduction and H2 evolution.
• The study provides insights into the photocatalytic reaction mechanism.