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Cu-Modified La2Si2O7/TiO2 composite materials: preparation, characterization and photothermal properties
Wei Li1, Chao-Chao Tao1, Jian-Ping Tang1
1Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China. slzhong@jxnu.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|July 27, 2022
Summary
Copper-modified La2Si2O7/TiO2 composites exhibit enhanced photothermal properties due to surface plasmon resonance (SPR). These materials show potential for solar energy conversion and photothermal catalysis applications.
Area of Science:
- Materials Science
- Nanotechnology
- Photochemistry
Background:
- Titanium dioxide (TiO2) is a widely studied photocatalyst.
- Enhancing the light absorption and photothermal properties of TiO2 is crucial for advanced applications.
- Lanthanum silicate (La2Si2O7) can be used as a support material.
Purpose of the Study:
- To synthesize and characterize Cu-modified La2Si2O7/TiO2 composite materials.
- To investigate the enhanced photothermal properties of the composite materials.
- To explore potential applications in solar energy conversion and photothermal catalysis.
Main Methods:
- Molten salt method and solid-phase reduction strategy for material synthesis.
- Characterization of particle size (100-230 nm) and optical properties.
- Evaluation of photothermal performance under laser irradiation.
Main Results:
- Copper modification significantly increased the optical response from UV to near-infrared due to surface plasmon resonance (SPR).
- The composite exhibited enhanced visible light absorption and photothermal conversion efficiency.
- A 1 mg/mL solution reached 63.1 °C with a 45 °C temperature difference at 0.5 W/cm2 laser power density.
Conclusions:
- Cu-modified La2Si2O7/TiO2 composites demonstrate excellent photothermal properties.
- The enhanced optical and thermal characteristics make them promising for solar energy conversion and photothermal catalysis.
