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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

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Published on: April 10, 2018

Different CdSeTe structure determined photoelectrocatalytic reduction performance for carbon dioxide.

Wei Wei¹, Zhongxue Yang¹, Weijie Song¹

¹Department of Chemistry and Material Science, Shandong Agricultural University, 61 Daizong Road, Tai'an, Shandong 271018, China.

Journal of Colloid and Interface Science

|February 27, 2017

Summary

This summary is machine-generated.

Cadmium selenide telluride nanoparticles (CdSeTe NPs) on titanium dioxide nanotubes (TiO2 NTs) show superior photocatalytic and electrocatalytic CO2 reduction performance compared to nanosheets. This leads to significantly higher methanol yield in photoelectrochemical processes.

Keywords:

Carbon dioxide CdSeTe nanoparticles CdSeTe nanosheets Photoelectrocatalytic reduction

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Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

Area of Science:

Materials Science
Nanotechnology
Photocatalysis

Background:

Titanium dioxide nanotubes (TiO2 NTs) are widely studied for photocatalysis.
Developing efficient nanomaterials for CO2 reduction is crucial for environmental remediation.

Purpose of the Study:

To fabricate and compare the photocatalytic and electrocatalytic performance of CdSeTe nanoparticles (CdSeTe NPs)/TiO2 NTs and CdSeTe nanosheets (CdSeTe NSs)/TiO2 NTs.
To investigate the CO2 reduction capabilities of these composite materials, focusing on methanol production.

Main Methods:

Photoelectric deposition method for CdSeTe NPs/TiO2 NTs fabrication.
Hydrothermal method for CdSeTe NSs/TiO2 NTs fabrication.
Photoelectrochemical (PEC) reduction experiments to assess CO2 conversion efficiency and methanol yield.

Main Results:

CdSeTe NPs/TiO2 NTs exhibited a narrower band gap (1.24 eV) compared to CdSeTe NSs/TiO2 NTs (1.48 eV).
The photoelectrochemical conversion efficiency of CdSeTe NPs/TiO2 NTs was 2.72 times higher than that of CdSeTe NSs/TiO2 NTs.
Electrocatalytic CO2 reduction current density was 2.47 times greater for CdSeTe NPs/TiO2 NTs.
Methanol yield on CdSeTe NPs/TiO2 NTs reached 18.57 mmol L−1 in 300 min, 16 times higher than CdSeTe NSs/TiO2 NTs.

Conclusions:

CdSeTe NPs/TiO2 NTs demonstrate significantly enhanced photocatalytic and electrocatalytic performance for CO2 reduction compared to their nanosheet counterparts.
The superior performance is attributed to the narrower band gap and optimized morphology of the nanoparticle composite.
These findings highlight the potential of CdSeTe NPs/TiO2 NTs as efficient materials for solar fuel production via CO2 conversion.