Enhanced photocatalytic activity on polarized ferroelectric KNbO3

被引：47

作者：

Fu, Qiang ^{[1
,2
]}

Wang, Xianjie ^{[1
]}

Li, Changyu ^{[3
]}

Sui, Yu ^{[1
]}

Han, Yaping ^{[2
]}

Lv, Zhe ^{[1
]}

Song, Bo ^{[1
,4
]}

Xu, Ping ^{[5
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Northeast Forestry Univ, Dept Phys, Harbin 150040, Peoples R China

[3] Northeast Forestry Univ, Mat Sci & Engn Coll, Harbin 150040, Peoples R China

[4] Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Peoples R China

[5] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 110期

基金：

中国国家自然科学基金; 对外科技合作项目（国际科技项目）;

关键词：

AZO-DYES; DEGRADATION; PERFORMANCE; SEPARATION; CATALYSIS; OXIDATION; REMOVAL; ENERGY; WATER; TIO2;

D O I：

10.1039/c6ra23344a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, we demonstrate the enhanced photodegradation of rhodamine B on polarized ferroelectric KNbO3 (KNO) particles. High-quality KNO samples were prepared using a solid-state reaction and polarized under different electric fields. The variation of XRD and piezoelectric coefficient (d(33)) suggest an increased intensity of the ferroelectric polarization in the polarized samples. In contrast to the slow photodegradation rate of unpolarized KNO, the normalized photodegradation reaction rate constant was remarkably increased to 0.317 min(-1) by the polarized KNO. The longer photoluminescence lifetime indicates that the enhancement of photocatalytic activity in polarized ferroelectric KNO powder is mainly attributed to the enhanced internal field. We believe this work may open up new avenues in photocatalysis using polarized ferroelectric materials.

引用

页码：108883 / 108887

页数：5

共 50 条

[21] Ferroelectric and piezoelectric properties of KNbO3 films deposited on flexible organic substrate by hydrothermal method [J].

Shiraishi, Takahisa ;

Kaneko, Noriyuki ;

Ishikawa, Mutsuo ;

Kurosawa, Minoru ;

Uchida, Hiroshi ;

Funakubo, Hiroshi .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2014, 53 (09)

[22] Semiconducting ferroelectric photovoltaics through Zn2+ doping into KNbO3 and polarization rotation [J].

Wang, Fenggong ;

Grinberg, Ilya ;

Rappe, Andrew M. .

PHYSICAL REVIEW B, 2014, 89 (23)

[23] Oxygen vacancies assisted ferroelectric heterojunction for enhanced photocatalytic activity [J].

Shi, Jian ;

Chao, Chunying ;

Gao, Yingying ;

Li, Hao ;

Ge, Suxiang ;

Li, Caixia ;

Chen, Xi ;

He, Weiwei .

APPLIED SURFACE SCIENCE, 2023, 624

[24] New Application and Excellent Performance of Ag/KNbO3 Nanocomposite in Photocatalytic NH3 Synthesis [J].

Xing, Pingxing ;

Wu, Shijie ;

Chen, Yijing ;

Chen, Pengfei ;

Hu, Xin ;

Lin, Hongjun ;

Zhao, Leihong ;

He, Yiming .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2019, 7 (14) :12408-12418

[25] KNbO3 photoelectrode for DSSC: a structural, optical and electrical approach [J].

Cucatti, Silvia ;

Gularte, Luciano Timm ;

Fernandes, Cristian Dias ;

Carvalho, Ramon Dadalto ;

Ferrer, Mateus Meneghetti ;

Jardim, Pedro Lovato Gomes ;

Raubach, Cristiane Wienke ;

Cava, Sergio da Silva ;

Moreira, Mario Lucio .

DALTON TRANSACTIONS, 2023, 52 (18) :5976-5982

[26] Enhancing photocatalytic activity of one-dimensional KNbO3 nanowires by Au nanoparticles under ultraviolet and visible-light [J].

Lan, Jinyao ;

Zhou, Xuemei ;

Liu, Gang ;

Yu, Jiaguo ;

Zhang, Jingchang ;

Zhi, Linjie ;

Nie, Guangjun .

NANOSCALE, 2011, 3 (12) :5161-5167

[27] Enhanced photocatalytic activity in ferroelectric BiFeO3 nanoparticles treated by a corona poling method [J].

Zhang, Lintong ;

Li, Xiaojie ;

Chen, Jianguo ;

Jin, Dengren ;

Cheng, Jinrong .

CERAMICS INTERNATIONAL, 2022, 48 (11) :15908-15912

[28] The p-n heterojunction-engineered Bi2MoO6/KNbO3 with 2D/3D architecture for enhanced photocatalytic activity towards benzene-containing contaminants under visible light illumination [J].

Liu, Chen ;

He, Xi ;

Fan, Yuhan ;

Li, Jun ;

He, Xinxia ;

Chen, Ming .

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2022, 10 (05)

[29] Heterojunction and ferroelectric polarization co-promoting photocatalytic activity [J].

Li, Mingtao ;

Wang, Yinghui ;

Tian, Na ;

Huang, Hongwei .

APPLIED SURFACE SCIENCE, 2022, 587

[30] Enhanced photocatalytic activity of titania in the presence of KNO3 on the photodegradation of dyes [J].

Mahlalela, L. C. ;

Dlamini, L. N. .

SURFACES AND INTERFACES, 2016, 1-3 :21-28

← 1 2 3 4 5 →