Ni-Al layered double hydroxide-coupled layered mesoporous titanium dioxide (Ni-Al LDH/LM-TiO

Area of Science:

• Materials Science
• Environmental Chemistry
• Nanotechnology

Background:

• Layered double hydroxides (LDHs) exhibit promising adsorption capabilities for pollutants.
• Mesoporous titanium dioxide (TiO2) is a well-established photocatalyst.
• Developing composite materials can enhance adsorption and photocatalytic efficiencies.

Purpose of the Study:

• To synthesize and characterize Ni-Al LDH/LM-TiO2 composites.
• To investigate the dual adsorption and photocatalytic properties of these composites.
• To understand the coupling mechanism between Ni-Al LDHs and LM-TiO2.

Main Methods:

• Simple precipitation and precipitation-peptization methods for material synthesis.
• Hydrothermal approach for creating Ni-Al LDH/LM-TiO2 composites.
• Adsorption and photocatalytic degradation experiments using methyl orange as a target pollutant.

Main Results:

• Ni-Al LDHs demonstrated effective adsorption of methyl orange.
• The Ni-Al LDH/LM-TiO2 composites exhibited enhanced UV-visible light absorption.
• The optimized 11% Ni-Al LDH/LM-TiO2 composite achieved 55.18% adsorption and 87.54% methyl orange degradation within 30 minutes.
• Improved photogenerated carrier transmission and separation were observed.

Conclusions:

• Ni-Al LDH/LM-TiO2 composites possess significant dual adsorption and photocatalytic degradation capabilities.
• The synergistic effect between Ni-Al LDHs and LM-TiO2 enhances pollutant removal efficiency.
• The developed composites show excellent stability and recyclability for environmental remediation applications.