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Efficient full-spectrum driven ammonia synthesis over heterostructured TiO2 nanosheet arrays
Xiaowei Mu1,2, Shuang Cai1, Rong Fu1
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China. luli@jlu.edu.cn.
Chemical Communications (Cambridge, England)
|December 8, 2021
Summary
Researchers developed a novel photocatalyst for efficient ammonia synthesis using the full solar spectrum. This breakthrough offers high production rates under visible and near-infrared light, advancing sustainable ammonia production.
Area of Science:
- Materials Science
- Photocatalysis
- Green Chemistry
Background:
- Ammonia synthesis is crucial for agriculture and industry.
- Current methods like Haber-Bosch are energy-intensive.
- Photocatalytic ammonia synthesis offers a sustainable alternative.
Purpose of the Study:
- To develop an efficient photocatalyst for ammonia synthesis.
- To utilize the entire solar spectrum for ammonia production.
- To achieve high ammonia production rates under visible and near-infrared light.
Main Methods:
- Fabrication of Ruthenium (Ru) modified anatase/TiO2(B) heterostructured nanosheet arrays.
- Testing photocatalytic activity under simulated solar irradiation.
- Quantification of ammonia (NH3) production rates.
Main Results:
- Achieved efficient photocatalytic ammonia synthesis across the entire solar spectrum.
- Demonstrated superior NH3 production rates: 2004 μg h⁻¹ g⁻¹ under visible light (400 nm).
- Achieved significant NH3 production rate of 521 μg h⁻¹ g⁻¹ under near-infrared light (1550 nm).
Conclusions:
- Ru-modified anatase/TiO2(B) heterostructures are highly effective photocatalysts for ammonia synthesis.
- The developed material efficiently harnesses broad solar spectrum, including visible and NIR light.
- This work presents a promising pathway for sustainable and solar-driven ammonia production.
