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Converting Organic Wastewater into CO Using MOFs-Derived Co/In2O3 Double-Shell Photocatalyst
Qian Liang1, Shuang Zhao1, Zhongyu Li1
1Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
ACS Applied Materials & Interfaces
|August 23, 2021
Summary
This study introduces Co/In2O3 nanotubes, a novel photocatalyst for converting wastewater. These nanotubes efficiently convert CO2 and phenol into valuable chemicals using solar energy.
Area of Science:
- Materials Science
- Environmental Chemistry
- Catalysis
Background:
- Photocatalytic conversion offers a sustainable solution for environmental pollution and energy demands.
- Developing efficient photocatalysts is crucial for converting organic wastewater into valuable products.
Purpose of the Study:
- To synthesize and characterize Co/In2O3 nanotubes with a double-shell structure for enhanced photocatalytic activity.
- To investigate the photocatalytic performance of Co/In2O3 in CO2 reduction and organic wastewater treatment.
Main Methods:
- One-step calcination method for synthesizing Co/In2O3 nanotubes.
- Photocatalytic experiments under solar irradiation to assess CO2 reduction and wastewater conversion.
- Transient photovoltage (TPV) tests to analyze charge carrier dynamics.
Main Results:
- Co/In2O3 nanotubes exhibited excellent photocatalytic CO2 reduction performance (4902 μmol h-1 g-1).
- The material demonstrated in situ CO2 self-generation and reduction in acidic organic wastewater (phenol solution).
- High CO2 (47.5 μmol h-1 g-1) and CO (0.9 μmol h-1 g-1) evolution rates were observed under solar irradiation.
Conclusions:
- Co/In2O3 double-shell heterostructures are highly efficient photocatalysts for CO2 reduction and organic wastewater valorization.
- Co nanoparticles act as active sites for CO2 reduction, facilitating electron capture and stabilization.
- This research presents a promising strategy for simultaneous environmental remediation and chemical production.
