Ultrasound‐Triggered Surface Reconstruction with Improved Carriers Transfer Kinetics in CdIn2S4 for Solar Water Oxidation DOI

Linxing Meng,

Jinlu He, Shengnan Li

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(3)

Published: Oct. 6, 2023

Abstract The surface oxygen evolution reaction (OER) is severely restricted owing to the sluggish OER kinetics and limited number of reactive sites. Although reconstruction can introduce defects improve performance, they often function as recombination centers cause severe carrier recombination. With aid ultrasonication, CdIn2S4 photoanode reconstructed using Zn‐modified Cd without extreme chemical environment. Owing reconstruction, formed type‐II band structure beneficial for separating photogenerated carriers reduced bulk Additionally, are introduced in situ during ultrasound cavitation process, which facilitated transfer, recombination, increased active First‐principles calculations indicate that modified effectively lower electrochemical barrier promote by precisely regulating four‐electron reaction. Consequently, optimized exhibits a enhanced photocurrent 5.30 mA cm −2 at 1.23 V versus reversible hydrogen electrode. These results demonstrate an accurate design be achieved introducing modifying metal transfer transport behaviors carriers.

Language: Английский

Cu2O as the hole extraction layer modified BiVO4 photoanode to enhance charge separation and transfer DOI
Ze Tian,

Zhenxia Wang,

Zizai Ma

et al.

Science China Materials, Journal Year: 2024, Volume and Issue: 67(5), P. 1564 - 1573

Published: April 12, 2024

Language: Английский

Citations

7
Functional coupling hole transport and extraction units over BiVO4 for efficient solar-to-hydrogen conversion DOI
Zemin Fu, Yu Zhu,

Dongmei Qin

et al.

Energy Conversion and Management, Journal Year: 2024, Volume and Issue: 322, P. 119153 - 119153

Published: Oct. 19, 2024

Language: Английский

Citations

7
Construction of Y‐Doped BiVO4 Photocatalysts for Efficient Two‐Electron O2 Reduction to H2O2 DOI

Dujuan Dai,

Xiaolei Bao, Qianqian Zhang

et al.

Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 29(25)

Published: Feb. 8, 2023

Photocatalytic hydrogen peroxide (H2 O2 ) production on BiVO4 photocatalysts using water and oxygen as raw materials is a green sustainable process. However, the photocatalytic efficiency of pristine limited by severe charge recombination. In this work, rare earth element Yttrium (Y) doped were fabricated hydrothermal method. H2 experiment, optimized Y-doped photocatalyst produced 114 μmol g-1 h-1 under simulated sunlight (AM1.5) irradiation, which four times higher than activity pure (26 ). Density functional theory (DFT) calculation revealed that Y doping can enhance adsorption surface. Mechanistic investigations suggest process induces in situ formation monoclinic/tetragonal heterojunction, further promotes photogenerated carriers separation efficiency.

Language: Английский

Citations

14
Dual Heterojunctions and Nanobowl Morphology Engineered BiVO4 Photoanodes for Enhanced Solar Water Splitting DOI
Kexin Ren,

Jiayi Zhou,

Zihao Wu

et al.

Small, Journal Year: 2023, Volume and Issue: 20(1)

Published: Aug. 31, 2023

Abstract Photoelectrochemical (PEC) water splitting represents an attractive strategy to realize the conversion from solar energy hydrogen energy, but severe charge recombination in photoanodes significantly limits efficiency. Herein, a unique BiVO 4 (BVO) nanobowl (NB) heterojunction photoanode, which consists of [001]‐oriented BiOCl underlayer and BVO nanobowls containing embedded nanocrystals, is fabricated by nanosphere lithography followed situ transformation. Experimental characterizations theoretical simulation prove that morphology can effectively enhance light absorption while reducing carrier diffusion path. Density functional theory (DFT) calculations show tendency electron transfer BiOCl. The forms compact type II with BVO, favoring through substrate. Furthermore, nanoparticles form bulk facilitate transfer. Consequently, dual heterojunctions engineered BVO/BiOCl NB photoanode exhibits PEC performance toward oxidation excellent separation efficiency 95.5%, remarkable photocurrent density 3.38 mA cm −2 at 1.23 V versus reversible electrode, fourfold enhancement compared flat counterpart. This work highlights great potential integrating engineering fabricating high‐performance photoelectrodes efficient conversion.

Language: Английский

Citations

14
Ultrasound‐Triggered Surface Reconstruction with Improved Carriers Transfer Kinetics in CdIn2S4 for Solar Water Oxidation DOI

Linxing Meng,

Jinlu He, Shengnan Li

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(3)

Published: Oct. 6, 2023

Abstract The surface oxygen evolution reaction (OER) is severely restricted owing to the sluggish OER kinetics and limited number of reactive sites. Although reconstruction can introduce defects improve performance, they often function as recombination centers cause severe carrier recombination. With aid ultrasonication, CdIn2S4 photoanode reconstructed using Zn‐modified Cd without extreme chemical environment. Owing reconstruction, formed type‐II band structure beneficial for separating photogenerated carriers reduced bulk Additionally, are introduced in situ during ultrasound cavitation process, which facilitated transfer, recombination, increased active First‐principles calculations indicate that modified effectively lower electrochemical barrier promote by precisely regulating four‐electron reaction. Consequently, optimized exhibits a enhanced photocurrent 5.30 mA cm −2 at 1.23 V versus reversible hydrogen electrode. These results demonstrate an accurate design be achieved introducing modifying metal transfer transport behaviors carriers.

Language: Английский

Citations

14