Heterojunction photoanode of SnO2 and Mo-doped BiVO4 for boosting photoelectrochemical performance and tetracycline hydrochloride degradation

Soojin Kahng; Jung Hyeun Kim

doi:10.1016/j.chemosphere.2021.132800

Heterojunction photoanode of SnO₂ and Mo-doped BiVO₄ for boosting photoelectrochemical performance and tetracycline hydrochloride degradation

Soojin Kahng
, Jung Hyeun Kim

Department of Chemical Engineering

University of Seoul

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

The photoelectrochemical (PEC) method has a potential to harvest solar energy for sustainable energy and degrade contaminants. Herein, we fabricated cauliflower-like SnO₂ and porous Mo-doped BiVO₄ (SnO₂/Mo:BiVO₄) photoelectrodes by a sol-gel spin-coating method for better PEC performance and higher degradability of tetracycline hydrochloride (TC-HCl). The SnO₂ layer plays a crucial role in attaining a smooth and uniform surface of the photoanodes for blocking holes to defect trap sites and preventing charge recombination with improved light utilization. Mo dopants serve as nuclei for the crystallization of BiVO₄ and for making charge-adjustable porous structures for PEC performance. Thus, the content-optimized SnO₂/Mo:BiVO₄ photoanode film presents the highest photocurrent density of 0.59 mA cm⁻² at 1.23 V_RHE of 82.1% TC-HCl decomposition efficiency within 120 min at a rate constant of 1.49 × 10⁻² min⁻¹, providing a promising method for green environmental applications.

Original language	English
Article number	132800
Journal	Chemosphere
Volume	291
DOIs	https://doi.org/10.1016/j.chemosphere.2021.132800
State	Published - Mar 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

Keywords

Degradation
Mo doped BiVO
Photoelectrochemical
SnO
Tetracycline hydrochloride

Access to Document

10.1016/j.chemosphere.2021.132800

Cite this

@article{fda9a2e1c8a540caaba4d247cc2d02a0,

title = "Heterojunction photoanode of SnO2 and Mo-doped BiVO4 for boosting photoelectrochemical performance and tetracycline hydrochloride degradation",

abstract = "The photoelectrochemical (PEC) method has a potential to harvest solar energy for sustainable energy and degrade contaminants. Herein, we fabricated cauliflower-like SnO2 and porous Mo-doped BiVO4 (SnO2/Mo:BiVO4) photoelectrodes by a sol-gel spin-coating method for better PEC performance and higher degradability of tetracycline hydrochloride (TC-HCl). The SnO2 layer plays a crucial role in attaining a smooth and uniform surface of the photoanodes for blocking holes to defect trap sites and preventing charge recombination with improved light utilization. Mo dopants serve as nuclei for the crystallization of BiVO4 and for making charge-adjustable porous structures for PEC performance. Thus, the content-optimized SnO2/Mo:BiVO4 photoanode film presents the highest photocurrent density of 0.59 mA cm−2 at 1.23 VRHE of 82.1\% TC-HCl decomposition efficiency within 120 min at a rate constant of 1.49 × 10−2 min−1, providing a promising method for green environmental applications.",

keywords = "Degradation, Mo doped BiVO, Photoelectrochemical, SnO, Tetracycline hydrochloride",

author = "Soojin Kahng and Kim, \{Jung Hyeun\}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

month = mar,

doi = "10.1016/j.chemosphere.2021.132800",

language = "English",

volume = "291",

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T1 - Heterojunction photoanode of SnO2 and Mo-doped BiVO4 for boosting photoelectrochemical performance and tetracycline hydrochloride degradation

AU - Kahng, Soojin

AU - Kim, Jung Hyeun

PY - 2022/3

Y1 - 2022/3

N2 - The photoelectrochemical (PEC) method has a potential to harvest solar energy for sustainable energy and degrade contaminants. Herein, we fabricated cauliflower-like SnO2 and porous Mo-doped BiVO4 (SnO2/Mo:BiVO4) photoelectrodes by a sol-gel spin-coating method for better PEC performance and higher degradability of tetracycline hydrochloride (TC-HCl). The SnO2 layer plays a crucial role in attaining a smooth and uniform surface of the photoanodes for blocking holes to defect trap sites and preventing charge recombination with improved light utilization. Mo dopants serve as nuclei for the crystallization of BiVO4 and for making charge-adjustable porous structures for PEC performance. Thus, the content-optimized SnO2/Mo:BiVO4 photoanode film presents the highest photocurrent density of 0.59 mA cm−2 at 1.23 VRHE of 82.1% TC-HCl decomposition efficiency within 120 min at a rate constant of 1.49 × 10−2 min−1, providing a promising method for green environmental applications.

AB - The photoelectrochemical (PEC) method has a potential to harvest solar energy for sustainable energy and degrade contaminants. Herein, we fabricated cauliflower-like SnO2 and porous Mo-doped BiVO4 (SnO2/Mo:BiVO4) photoelectrodes by a sol-gel spin-coating method for better PEC performance and higher degradability of tetracycline hydrochloride (TC-HCl). The SnO2 layer plays a crucial role in attaining a smooth and uniform surface of the photoanodes for blocking holes to defect trap sites and preventing charge recombination with improved light utilization. Mo dopants serve as nuclei for the crystallization of BiVO4 and for making charge-adjustable porous structures for PEC performance. Thus, the content-optimized SnO2/Mo:BiVO4 photoanode film presents the highest photocurrent density of 0.59 mA cm−2 at 1.23 VRHE of 82.1% TC-HCl decomposition efficiency within 120 min at a rate constant of 1.49 × 10−2 min−1, providing a promising method for green environmental applications.

KW - Degradation

KW - Mo doped BiVO

KW - Photoelectrochemical

KW - SnO

KW - Tetracycline hydrochloride

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