Synthesis of porous nanosheets-assembled ZnO/ZnCo2O4 hierarchical structure for TEA detection

被引：161
作者：
Li, Yanwei [1 ,2 ]
Luo, Na [2 ]
Sun, Guang [1 ,2 ,3 ]
Zhang, Bo [2 ]
Jin, Honghong [2 ]
Lin, Long [2 ]
Bala, Hari [2 ]
Cao, Jianliang [1 ]
Zhang, Zhanying [1 ,3 ]
Wang, Yan [1 ,3 ]
机构：
[1] Henan Polytech Univ, Collaborat Innovat Ctr Coal Safety Prod Henan Pro, Jiaozuo 454000, Peoples R China
[2] Henan Polytech Univ, Sch Mat Sci & Engn, Cultivating Base Key Lab Environm Friendly Inorga, Jiaozuo 454000, Peoples R China
[3] Henan Polytech Univ, State Key Lab Cultivat Bases Gas Geol & Gas Contr, Jiaozuo 454000, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2019年 / 287卷
基金：
中国国家自然科学基金;
关键词：
ZnO/ZnCo2O4; Hierarchical structure; Porous nanosheets; Heterojunction; Gas sensor; GAS-SENSING PROPERTIES; HOLLOW SPHERES; STRUCTURE EVOLUTION; N HETEROJUNCTION; TRIETHYLAMINE; PERFORMANCE; ZNCO2O4; ZNO; SENSOR; NANORODS;
D O I：
10.1016/j.snb.2019.02.055
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Hierarchical structures (HSs) of metal oxide semiconductor (MOS) have stimulated tremendous research attentions owing to their fascinating properties. Here, a HS of ZnO/ZnCo2O4 with varied ZnO contents (0-8 wt%) has been successfully prepared via a surfactant-free hydrothermal method combined with subsequent calcination. The prepared ZnO/ZnCo2O4 HS features an ordered assembly of two dimensional (2D) porous nanosheets with the thickness about 15 nm and evenly distributed ZnCo2O4-ZnO p-n junctions. The gas sensing properties of the ZnO/ZnCo2O4 HS were investigated and compared with pure ZnCo2O4 with similar morphology. It was found that after decorating with ZnO, the gas sensing properties of ZnCo2O4 to triethylamine (TEA) were remarkably improved, such as lowered optimum working temperature (decreased from 260 to 220 degrees C), faster response/recover speed, and higher sensitivity (0.0377/ppm) within a linear concentration range of 5-300 ppm. The improved gas sensing properties can be attributed to the sensitization effect of n-type ZnO on p-type ZnCo2O4 as well as the unique porous nanosheets-assembled hierarchical structure.
引用
收藏
页码：199 / 208
页数：10
相关论文
共 52 条
[1]  
Alali K.T., 2016, RSC ADV, V6
[2]   Tube in tube ZnO/ZnCo2O4 nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties [J].
Alali, Khaled Tawfik ;
Liu, Jingyuan ;
Liu, Qi ;
Li, Rumin ;
Li, Zhanshuang ;
Liu, Peili ;
Aljebawi, Kassem ;
Wang, Jun .
RSC ADVANCES, 2017, 7 (19) :11428-11438
[3]   Preparation of conducting films based on α-MoO3/PANI hybrids and their sensing properties to triethylamine at room temperature [J].
Bai, Shouli ;
Zhao, Yanhong ;
Sun, Jianhua ;
Tong, Zhangfa ;
Luo, Ruixian ;
Li, Dianqing ;
Chen, Aifan .
SENSORS AND ACTUATORS B-CHEMICAL, 2017, 239 :131-138
[4]   In-situ generation of highly dispersed Au nanoparticles on porous ZnO nanoplates via ion exchange from hydrozincite for VOCs gas sensing [J].
Feng, Zhenyu ;
Ma, Yanxing ;
Natarajan, Vinothkumar ;
Zhao, Quanqin ;
Ma, Xicheng ;
Zhan, Jinhua .
SENSORS AND ACTUATORS B-CHEMICAL, 2018, 255 :884-890
[5]   Volatile Organic Compound Gas-Sensing Properties of Bimodal Porous α-Fe2O3 with Ultrahigh Sensitivity and Fast Response [J].
Geng, Wangchang ;
Ge, Shaobing ;
He, Xiaowei ;
Zhang, Shan ;
Gu, Junwei ;
Lai, Xiaoyong ;
Wang, Hong ;
Zhang, Qiuyu .
ACS APPLIED MATERIALS & INTERFACES, 2018, 10 (16) :13702-13711
[6]   RGO-loaded flower-like ZnCo2O4 nanohybrid as counter electrode for dye-sensitized solar cells [J].
Hou, Haigang ;
Shao, Haicheng ;
Zhang, Xiangzhao ;
Liu, Guiwu ;
Hussain, Shahid ;
Qiao, Guanjun .
MATERIALS LETTERS, 2018, 225 :5-8
[7]   Wrinkled-paper-like ZnCo2O4 nanoflakes as a superior anode material for ultrahigh-rate lithium-ion batteries [J].
Hou, Xiaoyi ;
Bai, Shuai ;
Xue, Song ;
Shang, Xiaonan ;
Fu, Yujun ;
He, Deyan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 711 :592-597
[8]  
Hu L, 2016, ACS APPL MATER INTER, V8, P31764, DOI DOI 10.1021/ACSAMI.6B11054
[9]   A new precursor strategy to prepare ZnCo2O4 nanorods and their excellent catalytic activity for thermal decomposition of ammonium perchlorate [J].
Jia, Zhigang ;
Ren, Daping ;
Wang, Qiuze ;
Zhu, Rongsun .
APPLIED SURFACE SCIENCE, 2013, 270 :312-318
[10]   Yolk-shelled ZnCo2O4 microspheres: Surface properties and gas sensing application [J].
Joshi, Nirav ;
da Silva, Luis F. ;
Jadhav, Harsharaj S. ;
Shimizu, Flavio M. ;
Suman, Pedro H. ;
M'Peko, Jean-Claude ;
Orlandi, Marcelo Ornaghi ;
Seo, Jeong Gil ;
Mastelaro, Valmor R. ;
Oliveira, Osvaldo N., Jr. .
SENSORS AND ACTUATORS B-CHEMICAL, 2018, 257 :906-915
123456