In Situ Unravelling NiOOH Species on Flower‐Like NiFeCo LDH/Nb2CTx for Ameliorated Solar‐Powered Bifunctional Electrocatalytic Benzyl Alcohol Oxidation Coupled with Hydrogen Evolution DOI

Jian Yiing Loh,

Feng Ming Yap,

Tan Ji Siang

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 11, 2024

Abstract Developing bifunctional electrocatalysts from earth‐abundant first‐row transition metals for large‐scale hydrogen production through water electrolysis is both promising and challenging. This study presents a ternary layered double hydroxide (LDH) as electrocatalyst the evolution reaction (HER) benzyl alcohol oxidation (BAOR). The synergy between 2D NiFeCo LDH non‐Ti‐based Nb 2 CT x MXene enhances electrochemical performance. achieves excellent results with low potential of 1.5 V versus RHE at 100 mA cm⁻ BAOR, an overpotential 320 mV 50 HER, stability over h. A solar cell‐powered HER||BAOR system shows faradaic efficiency ≈73.92% benzaldehyde solar‐to‐hydrogen (STH) ≈39.67%. In situ Raman analysis identifies oxyhydroxide group real catalytic active site during BAOR. These findings offer valuable insights linking fundamental research technological innovation to address global challenges.

Language: Английский

Sb-Doped CeO2 Nanospheres for Selective CO2 Electroreduction to Ethanol through Dynamic Redox Cycling of Surface Sb and Ce Sites DOI
Xiangyu Wang, Peng Wang, Chunhua Wu

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

It is challenging to construct non-Cu catalysts toward CO2 electroreduction (CO2ER) ethanol with high selectivity due the difficulty in adjusting active sites for controlling evolution of reaction intermediates. In this work, Sb-doped CeO2 nanospheres are constructed tune intermediates on selective generation. The primary one Sb site and two Ce undergo fluctuations oxidation states during CO2ER, which promotes *CO*OH formation conversion linear *COL further C–C coupling produce ethanol. optimal Sb5.0%-CeO2 can convert as a single liquid product over 50% broad potential range from −0.5 −1.0 V. Remarkably, it exhibits an Faradaic efficiency 70.5 ± 1.2% at −0.7 V stable operation 48 h. This work provides insights into catalyst design CO2ER selectivity.

Language: Английский

Citations

0
In Situ Unravelling NiOOH Species on Flower‐Like NiFeCo LDH/Nb2CTx for Ameliorated Solar‐Powered Bifunctional Electrocatalytic Benzyl Alcohol Oxidation Coupled with Hydrogen Evolution DOI

Jian Yiing Loh,

Feng Ming Yap,

Tan Ji Siang

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 11, 2024

Abstract Developing bifunctional electrocatalysts from earth‐abundant first‐row transition metals for large‐scale hydrogen production through water electrolysis is both promising and challenging. This study presents a ternary layered double hydroxide (LDH) as electrocatalyst the evolution reaction (HER) benzyl alcohol oxidation (BAOR). The synergy between 2D NiFeCo LDH non‐Ti‐based Nb 2 CT x MXene enhances electrochemical performance. achieves excellent results with low potential of 1.5 V versus RHE at 100 mA cm⁻ BAOR, an overpotential 320 mV 50 HER, stability over h. A solar cell‐powered HER||BAOR system shows faradaic efficiency ≈73.92% benzaldehyde solar‐to‐hydrogen (STH) ≈39.67%. In situ Raman analysis identifies oxyhydroxide group real catalytic active site during BAOR. These findings offer valuable insights linking fundamental research technological innovation to address global challenges.

Language: Английский

Citations

2