Design of Core Shell Heterostructure Nanofibers with Different Work Function and Their Sensing Properties to Trimethylamine

被引：104

作者：

Li, Feng ^{[1
]}

Gao, Xing ^{[1
]}

Wang, Rui ^{[1
]}

Zhang, Tong ^{[1
,2
]}

Lu, Geyu ^{[1
]}

Barsan, Nicolae ^{[3
]}

机构：

[1] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

[2] Chinese Acad Sci, State Key Lab Transducer Technol, Changchun 130012, Peoples R China

[3] Univ Tubingen, Inst Phys Chem, D-72076 Tubingen, Germany

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 30期

基金：

中国博士后科学基金;

关键词：

coaxial electrospinning; core shell heterostructure; nanofibers; gas sensor; TMA; GAS; NANOSTRUCTURES; DEPOSITION; NANOWIRES; FILMS; NIO; TIN;

D O I：

10.1021/acsami.6b04063

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The metal oxide semiconductor (MOS) core shell heterostructure nanofibers (NFs) have been successfully synthesized via an environmentally friendly coaxial electrospinning approach. To demonstrate the potential applications of the as prepared samples, sensors based on MOS core shell heterostructure NFs have been fabricated, and their gas sensing properties were investigated. Results show that the sensors exhibit an advanced gas sensing property to trimethylamine (TMA) including the outstanding selectivity and rapid response/recovery processes in comparison with the sensors based on single MOS NFs. These phenomena are closely associated with the electron flow caused by the work function difference between MOS of the core and the shell. The approach proposed in this study may contribute to the realization of more sensitive MOS core shell heterostructure sensors.

引用

页码：19799 / 19806

页数：8

共 32 条

[1] Optical and electrical properties of transparent conductive ITO thin films deposited by sol-gel process [J].

Alam, MJ ;

Cameron, DC .

THIN SOLID FILMS, 2000, 377 :455-459

[2] Au/α-Fe2O3 catalyst for water-gas shift reaction prepared by deposition-precipitation [J].

Andreeva, D ;

Tabakova, T ;

Idakiev, V ;

Christov, P ;

Giovanoli, R .

APPLIED CATALYSIS A-GENERAL, 1998, 169 (01) :9-14

[3] Conduction model of metal oxide gas sensors [J].

Barsan, N ;

Weimar, U .

JOURNAL OF ELECTROCERAMICS, 2001, 7 (03) :143-167

[4] Core-shell Co3O4/α-Fe2O3 heterostructure nanofibers with enhanced gas sensing properties [J].

Cao, Jing ;

Wang, Ziying ;

Wang, Rui ;

Liu, Sen ;

Fei, Teng ;

Wang, Lijie ;

Zhang, Tong .

RSC ADVANCES, 2015, 5 (46) :36340-36346

[5]

Chen J. Y., 2008, APPL PHYS LETT, V92

[6] Hollow ZnO Nanofibers Fabricated Using Electrospun Polymer Templates and Their Electronic Transport Properties [J].

Choi, Seung-Hoon ;

Ankonina, Guy ;

Youn, Doo-Young ;

Oh, Seong-Geun ;

Hong, Jae-Min ;

Rothschild, Avner ;

Kim, Il-Doo .

ACS NANO, 2009, 3 (09) :2623-2631

[7] Striking sensing improvement of n-type oxide nanowires by electronic sensitization based on work function difference [J].

Choi, Sun-Woo ;

Katoch, Akash ;

Kim, Jae-Hun ;

Kim, Sang Sub .

JOURNAL OF MATERIALS CHEMISTRY C, 2015, 3 (07) :1521-1527

[8] Quasi-one dimensional metal oxide semiconductors: Preparation, characterization and application as chemical sensors [J].

Comini, E. ;

Baratto, C. ;

Faglia, G. ;

Ferroni, M. ;

Vomiero, A. ;

Sberveglieri, G. .

PROGRESS IN MATERIALS SCIENCE, 2009, 54 (01) :1-67

[9] Formulation and characterization of ZnO:Sb thick-film gas sensors [J].

Dayan, NJ ;

Sainkar, SR ;

Karekar, RN ;

Aiyer, RC .

THIN SOLID FILMS, 1998, 325 (1-2) :254-258

[10] Core-shell nanowire light-emitting diodes [J].

Hayden, O ;

Greytak, AB ;

Bell, DC .

ADVANCED MATERIALS, 2005, 17 (06) :701-+

← 1 2 3 4 →