Influence of Anatase-Rutile Ratio on Band Edge Position and Defect States of TiO2 Homojunction Catalyst

被引：32

作者：

Sarngan, Pooja P. ^{[1
]}

Lakshmanan, Agasthiyaraj ^{[1
]}

Sarkar, Debabrata ^{[1
]}

机构：

[1] SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Appl NanoPhys Lab, Kattankulathur 603203, India

来源：

CHEMOSPHERE | 2022年 / 286卷

关键词：

Electrospinning; Phase transformation; Raman strain; Photocatalytic activity; TiO2; nanofibers; PHOTOCATALYTIC ACTIVITY; ZNO NANOPARTICLES; WILLIAMSON-HALL; DEGRADATION; ALIGNMENT; STRAIN; CARBON; PHOTOLUMINESCENCE; TEMPERATURE; PERFORMANCE;

D O I：

10.1016/j.chemosphere.2021.131692

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Removal of toxic air and water dissociation in the environment has become a major challenging issue throughout the world. Mixed phase rutile-anatase titanium dioxide catalysts are very effective in photocatalysis and have been studied extensively. However, the mechanism causing this effect and band alignment of the two phases are not fully understood. Pointing to the issue, we have designed one-dimensional mixed-phase TiO2 and introduced defects near the valence band. Experimental results showed that band alignment between two phases, up-shift of the band edge, and optimum anatase percentage play a key role in the enhancement of the photocatalytic activity. We predicted shifts in band edge originating from surface electric dipole layer induced by defects.

引用

页数：10

共 51 条

[1] Photocatalytic degradation of rhodamine dyes with nano-TiO2 [J].

Aarthi, T. ;

Madras, Giridhar .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (01) :7-14

[2] Photoluminescence study of trap-state defect on TiO2 thin films at different substrate temperature via RF magnetron sputtering [J].

Abdullah, S. A. ;

Sahdan, M. Z. ;

Nafarizal, N. ;

Saim, H. ;

Bakri, A. S. ;

Rohaida, Cik C. H. ;

Adriyanto, F. ;

Sari, Y. .

INTERNATIONAL SEMINAR ON MATHEMATICS AND PHYSICS IN SCIENCES AND TECHNOLOGY 2017 (ISMAP 2017), 2018, 995

[3] Recent Advances in the Design of Plasmonic Au/TiO2 Nanostructures for Enhanced Photocatalytic Water Splitting [J].

Abed, Jehad ;

Rajput, Nitul S. ;

Moutaouakil, Amine El ;

Jouiad, Mustapha .

NANOMATERIALS, 2020, 10 (11) :1-18

[4] Enhancement Photocatalytic Activity of the Heterojunction of Two-Dimensional Hybrid Semiconductors ZnO/V2O5 [J].

Aliaga, Juan ;

Cifuentes, Nasla ;

Gonzalez, Guillermo ;

Sotomayor-Torres, Clivia ;

Benavente, Eglantina .

CATALYSTS, 2018, 8 (09)

[5] Defect engineering in photocatalytic materials [J].

Bai, Song ;

Zhang, Ning ;

Gao, Chao ;

Xiong, Yujie .

NANO ENERGY, 2018, 53 :296-336

[6] Enhanced Performance of Electrospun Nanofibrous TiO2/g-C3N4 Photocatalyst in Photocatalytic Degradation of Methylene Blue [J].

Bairamis, Feidias ;

Konstantinou, Ioannis ;

Petrakis, Dimitrios ;

Vaimakis, Tiverios .

CATALYSTS, 2019, 9 (11)

[7] Behavior of ZnO-doped TiO2/rGO nanocomposite for water treatment enhancement [J].

Bao, Huynh Van ;

Dat, Nguyen Minh ;

Giang, Nguyen Thi Huong ;

Thinh, Doan Ba ;

Tai, Le Tan ;

Trinh, Dinh Ngoc ;

Hai, Nguyen Duy ;

Khoa, Nguyen Anh Dang ;

Huong, Le Minh ;

Nam, Hoang Minh ;

Phong, Mai Thanh ;

Hieu, Nguyen Huu .

SURFACES AND INTERFACES, 2021, 23

[8] Co3O4 nanosheets on zeolite-templated carbon as an efficient oxygen electrocatalyst for a zinc-air battery [J].

Bera, Raj Kumar ;

Park, Hongjun ;

Ryoo, Ryong .

JOURNAL OF MATERIALS CHEMISTRY A, 2019, 7 (16) :9988-9996

[9] Visible-Light-Driven Production of Poly(α-terthiophene)-Au Nanoparticle Functional Hybrid Material [J].

Bera, Raj Kumar ;

Bhunia, Prasenjit ;

Chakrabartty, Sukanta ;

Raj, C. Retna .

CHEMNANOMAT, 2015, 1 (08) :586-592

[10] Photocatalytic and antifouling properties of electrospun TiO2 polyacrylonitrile composite nanofibers under visible light [J].

Bode-Aluko, Chris Ademola ;

Pereao, Omoniyi ;

Kyaw, Htet H. ;

Al-Naamani, Laila ;

Al-Abri, Mohammed Z. ;

Myint, Myo Tay Zar ;

Rossouw, Arnoux ;

Fatoba, Olanrewaju ;

Petrik, Leslie ;

Dobretsov, Sergey .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2021, 264

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