Ag-Loaded Sn-MOF Photocatalyst

Degrades in the dark

Stores photogenerated electrons upon illumination and releases them in the dark, enabling continuous pollutant degradation beyond conventional light-dependent photocatalysis.

Yue, Lin · Xiaoyun, Han · Shiqi, Xing · Liang, Wang · Liu, Yanfang · Yushan, Zhang · Han, Yonghui

Colloids and Surfaces A: Physicochemical and Engineering Aspects 2026

Specifications

Methyl orange degradation efficiency

{'zh': '90.7', 'en': '90.7'} %

Improvement in degradation effect

{'zh': '10', 'en': '10'} %

Advantages

Degrades in the dark

Pre-illumination stores photogenerated electrons in the catalyst, which are released in the dark and participate in methyl orange degradation, eliminating the need for continuous light.

Higher degradation

Under alternating light-dark reaction, the degradation effect on methyl orange is improved by approximately 10% compared with traditional photocatalysis, and continuous degradation is achieved.

Enhanced charge separation

Strong interactions between Ag and N, C atoms optimize electronic properties and enhance charge separation, which is the main reason for the increased activity.

Applications

• Wastewater organic pollutant degradation：For continuous degradation of organic pollutants such as azo dyes even during light fluctuations or at night.
• Environmental photocatalytic materials：As a photocatalyst that does not rely on continuous light, better suited to real environmental remediation scenarios.
• MOF-based composites：Utilizes the interfacial interaction between MOF and loaded Ag to enhance charge separation and activity.