Influence of annealing temperature on the photoelectric gas sensing of Fe-doped ZnO under visible light irradiation

被引：39

作者：

Han, Lina ^{[1
]}

Wang, DeJun ^{[1
]}

Lu, Yongchun ^{[1
]}

Jiang, Tengfei ^{[1
]}

Chen, Liping ^{[1
]}

Xie, Tengfeng ^{[1
]}

Lin, Yanhong ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2013年 / 177卷

基金：

中国国家自然科学基金;

关键词：

Gas sensor; Visible light-illumination; Fe-doped ZnO; Room temperature; Annealing temperature; OPTICAL-PROPERTIES; SENSOR; CO; SENSITIVITY; NANORODS; OXYGEN; PROPERTY; OXIDE;

D O I：

10.1016/j.snb.2012.10.096

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Fe-doped ZnO are fabricated by hydrothermal method. The influence of the annealing temperature on structural and photoelectric property was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectra (UV-vis DRS). Visible light-illumination room-temperature gas sensing to formaldehyde based on Fe-doped ZnO annealed at different temperatures was subsequently investigated by the surface photocurrent spectra and gas sensor characterization system, respectively. Accompanying with increasing annealing temperature from 400 degrees C to 600 degrees C, the response to formaldehyde was enhanced due to the increase in crystal quality and active sites on the surface of Fe-doped ZnO. However, when the annealing temperature goes over 700 degrees C, the phase of ZnFe2O4 was observed from XRD pattern. The existence of ZnFe2O4 hindered the transfer of photo-generated carriers and decreased the amount of surface active sites. As a result, the photoelectric gas response for formaldehyde was weaken to some extent. Our results demonstrated that annealing temperature is a very important parameter in the determination of the sensitivity of photoelectric gas sensing based on Fe-doped ZnO. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：34 / 40

页数：7

共 36 条

[1] Enhanced UV activation of electrochemically doped Ni in ZnO nanorods for room temperature acetone sensing [J].

Ahn, Hosang ;

Wang, Yaqi ;

Jee, Seung Hyun ;

Park, Minseo ;

Yoon, Young Soo ;

Kim, Dong-Joo .

CHEMICAL PHYSICS LETTERS, 2011, 511 (4-6) :331-335

[2] Fine-tuning of ceramic-based chemical sensors via novel microstructural modification -: Part II:: Low level CO sensing by molybdenum oxide, MoO3 [J].

Azad, Abdul-Majeed .

SENSORS AND ACTUATORS B-CHEMICAL, 2006, 120 (01) :25-34

[3] Micromachined twin gas sensor for CO and O2 quantification based on catalytically modified nano-SnO2 [J].

Belmonte, JC ;

Manzano, J ;

Arbiol, J ;

Cirera, A ;

Puigcorbé, J ;

Vilà, A ;

Sabaté, N ;

Gràcia, I ;

Cané, C ;

Morante, JR .

SENSORS AND ACTUATORS B-CHEMICAL, 2006, 114 (02) :881-892

[4] High-sensitivity NO2 gas sensors based on flower-like and tube-like ZnO nanomaterials [J].

Chen, Mei ;

Wang, Zhihua ;

Han, Dongmei ;

Gu, Fubo ;

Guo, Guangsheng .

SENSORS AND ACTUATORS B-CHEMICAL, 2011, 157 (02) :565-574

[5] Micromachined NH3 Gas Sensor with ppb-level Sensitivity Based on WO3 Nanoparticles Thinfilm [J].

Dao, Dzung Viet ;

Shibuya, Kyoji ;

Bui, Tung Thanh ;

Sugiyama, Susumu .

EUROSENSORS XXV, 2011, 25

[6] The effects of crystallite growth and dopant migration on the carbon monoxide sensing characteristics of nanocrystalline tin oxide based sensor materials [J].

Davis, SR ;

Chadwick, AV ;

Wright, JD .

JOURNAL OF MATERIALS CHEMISTRY, 1998, 8 (09) :2065-2071

[7] A combined EXAFS and diffraction study of pure and doped nanocrystalline tin oxide [J].

Davis, SR ;

Chadwick, AV ;

Wright, JP .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (48) :9901-9908

[8] Self-assembled ZnO 3D flowerlike nanostructures [J].

Fang, Zhen ;

Tang, Kaibin ;

Shen, Guozhen ;

Chen, Di ;

Kong, Rui ;

Lei, Shuijin .

MATERIALS LETTERS, 2006, 60 (20) :2530-2533

[9] Characterization of a nanosized TiO2 gas sensor [J].

Ferroni, M ;

Guidi, V ;

Martinelli, G ;

Faglia, G ;

Nelli, P ;

Sberveglieri, G .

NANOSTRUCTURED MATERIALS, 1996, 7 (07) :709-718

[10] UV-Light-Activated ZnO Fibers for Organic Gas Sensing at Room Temperature [J].

Gong, Jian ;

Li, Yinhua ;

Chai, Xinsheng ;

Hu, Zeshan ;

Deng, Yulin .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (02) :1293-1298

← 1 2 3 4 →