Boosting Photoelectrochemical Water Oxidation Performance of Ti–Fe2O3 Photoanode via NH2–MIL–53(FeCo) as a Cocatalyst DOI

Kaikai Ba,

Yunan Liu, Yanhong Lin

et al.

Energy Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 28, 2024

α–Fe 2 O 3 is a promising photoanode that can be used for solar‐driven photoelectrochemical (PEC) water splitting. However, due to low carrier separation efficiency and slow oxidation kinetics, the PEC performance of Ti–Fe still severely hindered. Here, novel inorganic–organic hybrid composite prepared by depositing NH –materials institute Lavoisier (MIL)–53(FeCo) cocatalyst on surface using solvothermal method. In results, it shown /NH –MIL–53(FeCo) has high photocurrent density (3.0 mA cm −2 at 1.23 V vs reversible hydrogen electrode (RHE), which 5.1 times bare , initial potential also undergoes negative change about 100 mV. The significantly enhanced, charge injection increases from 17.6% 68% versus RHE. further research, suggested excellent may attributed an increase in density, prolonged recombination time, exposed reactive sites. this study, new understanding design photoanodes with superior based metal organic framework modification provided.

Language: Английский

Tuning Surface Chemistry in 2D Layered BiOI by Facile Liquid‐Phase Exfoliation for Enhanced Photoelectrocatalytic Oxygen Evolution DOI Creative Commons

Mengjiao Wang,

Jaime Gallego,

Micaela Pozzati

et al.

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

Published: Sept. 4, 2024

BiOI is a promising photoelectrocatalyst for oxidation reactions. However, the limited photoelectrocatalytic (PEC) activity necessitates development of new strategies to modify its surface chemistry and thus enhance functional properties. Herein, we present simple method increase photocurrent in BiOI‐based photoanode by exfoliating microspheres oxyhalide produced through hydrothermal synthesis. Following exfoliation isopropanol, resulting layered colloid contains greater variety species, including Bi 2 O CO 3 , I − IO 5+ hydroxides, compared original BiOI. These additional species do not directly PEC oxygen evolution reaction (OER) performance. Instead, they are consumed or converted during OER, more active sites on photoelectrode reduced resistance, which ultimately improves water performance exfoliated Over long‐term chronoamperometry, demonstrates twice as high that microspheres. Analysis after OER reveals combination beneficial charge transfer, enhancing intrinsic properties This study offers insights into role determining performance, aiding optimization 2D materials‐based photoelectrocatalysts.

Language: Английский

Citations

1
MOFs-Derived CoP@FeP Heterojunction Catalyst for Hydrogen Production under Alkaline and Seawater Conditions DOI

张愉 罗

Journal of Advances in Physical Chemistry, Journal Year: 2024, Volume and Issue: 13(03), P. 455 - 466

Published: Jan. 1, 2024

Language: Английский

Citations

0
Highly Efficient Sunlight‐Driven Photocatalytic Activity of Cu‐Doped BiOBr/g‐C3N4 Nanocomposite via Z‐Scheme Design DOI

Sheida Bagherzadeh,

Saied Asadpour,

Mahdi Karimi‐Nazarabad

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(40)

Published: Oct. 1, 2024

Abstract Pharmaceutical pollutants introduce highly intricate compounds into the environment due to extensive structural and functional alterations resulting in adverse health effects on organisms. Herein, a novel nanocomposite is designed comprising Cu‐doped BiOBr nanoflakes g‐C 3 N 4 form dual absorber based organic‐inorganic electronic interface for photocatalytic degradation of tetracycline (TC). With incorporating Cu compositing with , band gap decreased from 2.74 eV 2.36 BiOBr:Cu/g‐C also light harvesting ability increased. The investigation rate considered factors such as pH, TC concentration, photocatalyst dosage, irradiation time, efficiency 98 % within 60 min. In prepared nanocomposite, photo‐generated electrons can recombine via atoms mediator holes valence their structure position which leads improved electron/hole separation enhanced activity. predominant active species involved process were found be superoxide radicals. Additionally, exhibited excellent stability, retaining 88 its activity after four cycles.

Language: Английский

Citations

0
Boosting Photoelectrochemical Water Oxidation Performance of Ti–Fe2O3 Photoanode via NH2–MIL–53(FeCo) as a Cocatalyst DOI

Kaikai Ba,

Yunan Liu, Yanhong Lin

et al.

Energy Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 28, 2024

α–Fe 2 O 3 is a promising photoanode that can be used for solar‐driven photoelectrochemical (PEC) water splitting. However, due to low carrier separation efficiency and slow oxidation kinetics, the PEC performance of Ti–Fe still severely hindered. Here, novel inorganic–organic hybrid composite prepared by depositing NH –materials institute Lavoisier (MIL)–53(FeCo) cocatalyst on surface using solvothermal method. In results, it shown /NH –MIL–53(FeCo) has high photocurrent density (3.0 mA cm −2 at 1.23 V vs reversible hydrogen electrode (RHE), which 5.1 times bare , initial potential also undergoes negative change about 100 mV. The significantly enhanced, charge injection increases from 17.6% 68% versus RHE. further research, suggested excellent may attributed an increase in density, prolonged recombination time, exposed reactive sites. this study, new understanding design photoanodes with superior based metal organic framework modification provided.

Language: Английский

Citations

0