Enhanced photocatalytic performance of TiO2 through a novel direct dual Z-scheme design

Fitri Nur Indah Sari; Duong Thi Kim Yen; Jyh Ming Ting

doi:10.1016/j.apsusc.2020.147506

Enhanced photocatalytic performance of TiO₂ through a novel direct dual Z-scheme design

Fitri Nur Indah Sari, Duong Thi Kim Yen, Jyh Ming Ting

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

1 Citation (Scopus)

Abstract

A novel ternary TiO₂/MoO₃/g-C₃N₄ nanocomposite photocatalyst has been synthesized and shown to exhibit a direct dual Z-scheme photodegradation mechanism. The TiO₂/MoO₃/g-C₃N₄ nanocomposite catalyst outperforms its constituents for methylene blue degradation. The highest degradation rate constant of 0.0303 min⁻¹ is about 3.9 times greater than that of TiO₂. The improved photocatalytic activity is attributed to the enhanced visible light absorption from the g-C₃N₄ and α-MoO₃, enhanced photogenerated hole/electron separation primarily in the TiO₂ and α-MoO₃, and enhanced fast charge transfer due to the existence of oxygen vacancies. The photodegradation mechanism is explained using a direct dual Z-scheme. This work affords a new insight towards designing highly efficient Z-scheme photocatalysts with enhanced visible light absorption, efficient photogenerated hole/electron separation, and strong redox ability.

Original language	English
Article number	147506
Journal	Applied Surface Science
Volume	533
DOIs	https://doi.org/10.1016/j.apsusc.2020.147506
Publication status	Published - 2020 Dec 15

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2020.147506

Fingerprint Dive into the research topics of 'Enhanced photocatalytic performance of TiO<sub>2</sub> through a novel direct dual Z-scheme design'. Together they form a unique fingerprint.

Cite this

@article{a2bb6c3837be432cac1546cd82bae01b,

title = "Enhanced photocatalytic performance of TiO2 through a novel direct dual Z-scheme design",

abstract = "A novel ternary TiO2/MoO3/g-C3N4 nanocomposite photocatalyst has been synthesized and shown to exhibit a direct dual Z-scheme photodegradation mechanism. The TiO2/MoO3/g-C3N4 nanocomposite catalyst outperforms its constituents for methylene blue degradation. The highest degradation rate constant of 0.0303 min−1 is about 3.9 times greater than that of TiO2. The improved photocatalytic activity is attributed to the enhanced visible light absorption from the g-C3N4 and α-MoO3, enhanced photogenerated hole/electron separation primarily in the TiO2 and α-MoO3, and enhanced fast charge transfer due to the existence of oxygen vacancies. The photodegradation mechanism is explained using a direct dual Z-scheme. This work affords a new insight towards designing highly efficient Z-scheme photocatalysts with enhanced visible light absorption, efficient photogenerated hole/electron separation, and strong redox ability.",

author = "Sari, {Fitri Nur Indah} and Yen, {Duong Thi Kim} and Ting, {Jyh Ming}",

note = "Funding Information: This work was funded by the Ministry of Science and Technology (MOST) in Taiwan under Grant No. 106-2221-E-006-170-MY3. ",

year = "2020",

month = dec,

day = "15",

doi = "10.1016/j.apsusc.2020.147506",

language = "English",

volume = "533",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier",

}

TY - JOUR

T1 - Enhanced photocatalytic performance of TiO2 through a novel direct dual Z-scheme design

AU - Sari, Fitri Nur Indah

AU - Yen, Duong Thi Kim

AU - Ting, Jyh Ming

N1 - Funding Information: This work was funded by the Ministry of Science and Technology (MOST) in Taiwan under Grant No. 106-2221-E-006-170-MY3.

PY - 2020/12/15

Y1 - 2020/12/15

N2 - A novel ternary TiO2/MoO3/g-C3N4 nanocomposite photocatalyst has been synthesized and shown to exhibit a direct dual Z-scheme photodegradation mechanism. The TiO2/MoO3/g-C3N4 nanocomposite catalyst outperforms its constituents for methylene blue degradation. The highest degradation rate constant of 0.0303 min−1 is about 3.9 times greater than that of TiO2. The improved photocatalytic activity is attributed to the enhanced visible light absorption from the g-C3N4 and α-MoO3, enhanced photogenerated hole/electron separation primarily in the TiO2 and α-MoO3, and enhanced fast charge transfer due to the existence of oxygen vacancies. The photodegradation mechanism is explained using a direct dual Z-scheme. This work affords a new insight towards designing highly efficient Z-scheme photocatalysts with enhanced visible light absorption, efficient photogenerated hole/electron separation, and strong redox ability.

AB - A novel ternary TiO2/MoO3/g-C3N4 nanocomposite photocatalyst has been synthesized and shown to exhibit a direct dual Z-scheme photodegradation mechanism. The TiO2/MoO3/g-C3N4 nanocomposite catalyst outperforms its constituents for methylene blue degradation. The highest degradation rate constant of 0.0303 min−1 is about 3.9 times greater than that of TiO2. The improved photocatalytic activity is attributed to the enhanced visible light absorption from the g-C3N4 and α-MoO3, enhanced photogenerated hole/electron separation primarily in the TiO2 and α-MoO3, and enhanced fast charge transfer due to the existence of oxygen vacancies. The photodegradation mechanism is explained using a direct dual Z-scheme. This work affords a new insight towards designing highly efficient Z-scheme photocatalysts with enhanced visible light absorption, efficient photogenerated hole/electron separation, and strong redox ability.

UR - http://www.scopus.com/inward/record.url?scp=85089526715&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85089526715&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2020.147506

DO - 10.1016/j.apsusc.2020.147506

M3 - Article

AN - SCOPUS:85089526715

VL - 533

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

M1 - 147506

ER -