Fabrication of hollow porous ZnO@ZnS heterostructures via hydrothermal method and enhanced gas-sensing performance for ethanol

被引：32

作者：

Li, Yan ^{[1
]}

Song, Shuang ^{[1
]}

Zhang, Lin-Bin ^{[1
]}

Lian, Xiao-Xue ^{[1
]}

Shan, Lin-Xi ^{[1
]}

Zhou, Qing-Jun ^{[1
]}

机构：

[1] Civil Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 855卷

基金：

中国国家自然科学基金;

关键词：

Zinc oxide; Zinc sulfide; Heterostructures; Porous structure; Nanoparticles; Gas-sensing; SNO2/ZNO HETEROSTRUCTURES; NANOROD ARRAYS; NANOSTRUCTURES; NANOSHEETS; NANOWIRES; SENSORS;

D O I：

10.1016/j.jallcom.2020.157430

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Heterostructures with great modulation of electron transfer afford a great opportunity for gas-sensing applications. Herein, a hollow porous ZnO@ZnS core-shell structure with high gas-sensing performance has been successfully hydrothermally synthesized. The phase composition and the morphology of the as-prepared products were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope and energy dispersive X-ray spectroscopy. The results show that the pure ZnO and the ZnO@ZnS appear a mesoporous structure and a hollow porous structure, respectively. Gas-sensing measurements show that the gas-sensing performance of the ZnO@ZnS based sensor is obviously higher than that of the pure ZnO, and it has a high selectivity, quick response-recovery and stability to ethanol. Its response reaches 114.2 to 100 ppm ethanol, and the response and recovery time is 3 s and 8 s to ethanol, respectively. The gas-sensing enhancement of the ZnO@ZnS can be attributed to the Schottky barrier at the interface of the ZnO@ZnS and the special hollow porous structure. The strategy put forward is generally applicable to design efficient ethanol sensors with optimized sensing performances. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：8

共 41 条

[1] 2D Sn-doped ZnO ultrathin nanosheet networks for Ienhanced acetone gas sensing application (vol 43, pg 2418, 2019) [J].

A-Hadeethi, Yas ;

Umar, Ahmad ;

Al-Heniti, Saleh H. ;

Kumar, Rajesh ;

Kim, S. H. ;

Zhang, Xixiang ;

Raffah, Bahaaudin M. .

CERAMICS INTERNATIONAL, 2020, 46 (04) :5505-5505

[2] Porous Si/SnO2 nanowires heterostructures for H2S gas sensing [J].

Bang, Jae Hoon ;

Choi, Myung Sik ;

Mirzaei, Ali ;

Oum, Wansik ;

Han, Seungmin ;

Kim, Sang Sub ;

Kim, Hyoun Woo .

CERAMICS INTERNATIONAL, 2020, 46 (01) :604-611

[3] Ethanol gas sensor based upon ZnO nanoparticles prepared by different techniques [J].

Bhatia, Sonik ;

Verma, Neha ;

Bedi, R. K. .

RESULTS IN PHYSICS, 2017, 7 :801-806

[4] Controlling Charge Carrier Overlap in Type-II ZnSe/ZnS/CdS Core-Barrier-Shell Quantum Dots [J].

Boldt, Klaus ;

Ramanan, Charusheela ;

Chanaewa, Alma ;

Werheid, Matthias ;

Eychmueller, Alexander .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2015, 6 (13) :2590-2597

[5] ZnO/ZnS Core-Shell Nanostructures for Low-Concentration NO2 Sensing at Room Temperature [J].

Borgohain, Rashi ;

Das, Reema ;

Mondal, Biplob ;

Yordsri, Visittapong ;

Thanachayanont, Chanchana ;

Baruah, Sunandan .

IEEE SENSORS JOURNAL, 2018, 18 (17) :7203-7208

[6] Effect of structure morphologies on hydrogen gas sensing by ZnO nanotubes [J].

Choi, Kyo-Sang ;

Chang, Sung-Pil .

MATERIALS LETTERS, 2018, 230 :48-52

[7] Semiconductor metal oxide gas sensors: A review [J].

Dey, Ananya .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2018, 229 :206-217

[8] Fabrication of ZnO@CeO2 core-shell hetero-structural nanofibers and enhanced gas sensing performance for acetone [J].

Diao, Quan ;

Yin, Yuna ;

Zhang, Xiaomei ;

Li, Jie ;

Jiao, Mingli ;

Cao, Jian ;

Qin, Qi ;

Yang, Kai ;

Zhu, Genxing ;

Xu, Xiumei .

FUNCTIONAL MATERIALS LETTERS, 2020, 13 (03)

[9] Synthesis and Gas Sensing Properties of α-Fe2O3 Microspheres Toward ppb-Level Aniline Detection [J].

Fu, Shang ;

Zhang, Hongguang ;

Wang, Guowei ;

Wang, Meng ;

Wang, Yu ;

Xia, Cunhui .

NANOSCIENCE AND NANOTECHNOLOGY LETTERS, 2019, 11 (08) :1070-1076

[10] One-Pot Hydrothermal Synthesis of Heterostructured ZnO/ZnS Nanorod Arrays with High Ethanol-Sensing Properties [J].

Gao, Peng ;

Wang, Longqiang ;

Wang, Ying ;

Chen, Yujin ;

Wang, Xiaona ;

Zhang, Guoli .

CHEMISTRY-A EUROPEAN JOURNAL, 2012, 18 (15) :4681-4686

← 1 2 3 4 5 →