Reversible Redox Probes to Determine Band‐Edge Locations and Dopant Concentrations of Nano‐TiO2 Thin‐Films: Settling the Mott‐Schottky Conundrum DOI
Divyansh Anil Khurana, Nina Plankensteiner, Bart Vermang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract Knowing the exact location of semiconductor band‐edges is key for mechanistic insights into their use water and CO 2 photo/electrocatalysis. In this regard, a reliable strategy nano‐semiconductors did not exist yet. We demonstrate reversible redox probes on nano‐semiconductor electrodes to determine band‐edge locations in aqueous solutions. Rectifying current‐potential (i‐U) characteristics with high work function (i.e. more positive formal potential) Fe(CN) 6 3− /Fe(CN) 4− couple yielded flatband potential at various pH whereas i‐U low negative Ru(NH 3 ) 3+ /Ru(NH 2+ provided conduction dopant concentration 30 nm thin‐film n‐TiO . The methodology can be extended other serves as an alternative goes beyond capabilities Mott‐Schottky procedure bulk electrodes.

Language: Английский

In-situ preparation of II & S-type hybrid heterojunction Ag2MoO4/AgCl/SiC photocatalyst from waste photovoltaic silicon for cefaclor and pharmaceutical wastewater degradation DOI
Yunyan Chen, Chengyao Teng, Zhijie Tang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131465 - 131465

Published: Jan. 9, 2025

Language: Английский

Citations

0
Reversible Redox Probes to Determine Band‐Edge Locations and Dopant Concentrations of Nano‐TiO2 Thin‐Films: Settling the Mott‐Schottky Conundrum DOI
Divyansh Anil Khurana, Nina Plankensteiner, Bart Vermang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract Knowing the exact location of semiconductor band‐edges is key for mechanistic insights into their use water and CO 2 photo/electrocatalysis. In this regard, a reliable strategy nano‐semiconductors did not exist yet. We demonstrate reversible redox probes on nano‐semiconductor electrodes to determine band‐edge locations in aqueous solutions. Rectifying current‐potential (i‐U) characteristics with high work function (i.e. more positive formal potential) Fe(CN) 6 3− /Fe(CN) 4− couple yielded flatband potential at various pH whereas i‐U low negative Ru(NH 3 ) 3+ /Ru(NH 2+ provided conduction dopant concentration 30 nm thin‐film n‐TiO . The methodology can be extended other serves as an alternative goes beyond capabilities Mott‐Schottky procedure bulk electrodes.

Language: Английский

Citations

0
Reversible Redox Probes to Determine Band‐Edge Locations and Dopant Concentrations of Nano‐TiO2 Thin‐Films: Settling the Mott‐Schottky Conundrum DOI
Divyansh Anil Khurana, Nina Plankensteiner, Bart Vermang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract Knowing the exact location of semiconductor band‐edges is key for mechanistic insights into their use water and CO 2 photo/electrocatalysis. In this regard, a reliable strategy nano‐semiconductors did not exist yet. We demonstrate reversible redox probes on nano‐semiconductor electrodes to determine band‐edge locations in aqueous solutions. Rectifying current‐potential (i‐U) characteristics with high work function (i.e. more positive formal potential) Fe(CN) 6 3− /Fe(CN) 4− couple yielded flatband potential at various pH whereas i‐U low negative Ru(NH 3 ) 3+ /Ru(NH 2+ provided conduction dopant concentration 30 nm thin‐film n‐TiO . The methodology can be extended other serves as an alternative goes beyond capabilities Mott‐Schottky procedure bulk electrodes.

Language: Английский

Citations

0