UV-triggered carrier transport regulation of fibrous NiO/SnO2 heterostructures for triethylamine detection

被引：23
作者：
Zhao, Huiyi [1 ]
Sun, Jianhua [1 ]
Liu, Jinmei [1 ]
Zhang, Haowei [1 ]
He, Huaguang [2 ]
Liu, Xuemei [1 ]
Liao, Dankui [1 ]
Tong, Zhangfa [1 ]
Sun, Lixia [1 ]
机构：
[1] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc Int, Nanning 530004, Peoples R China
[2] Guangxi Univ, Sch Comp & Elect Informat, Nanning 530004, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2023年 / 476卷
基金：
中国国家自然科学基金;
关键词：
Heterojunction; Photoactivation; Coaxial-electrospinning; Gas sensing mechanism; SNO2 HOLLOW SPHERES; P-N HETEROJUNCTION; GAS; NANOFIBERS; ZNO; ARCHITECTURES;
D O I：
10.1016/j.cej.2023.146687
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Constructing heterojunctions by using the synergistic and complementary effects of different metal oxide semiconductors (MOSs) properties can effectively increase catalytic activity, enhance adsorption capacity and improve carrier transport characteristics. Therefore, a series of NiO/SnO2 nanofibers with p-n heterojunction were prepared by coaxial electrospinning method, and triethylamine (TEA) detection was realized at low temperature or even room temperature by UV light (375 nm) photoactivation. Gas sensing measurements revealed that NiO/2SnO2 showed highresponse of 262 at 75 celcius towards 50 ppm TEA, which is 6 times higher than that of pure SnO2. And NiO/2SnO2 based gas sensor has excellent repeatability and stability. The enhanced gas sensing mechanism was also discussed in detail, which is attributedto the synergistic effects aroused by p-n heterojunction and photoactivation. The present work provides a promising strategy for improving the gas sensitive characteristics of MOSs as well as a new idea for the development and application of room temperature TEA gas sensor.
引用
收藏
页数：14
相关论文
共 70 条
  • [1] Enhanced room temperature ferromagnetism in Ni doped SnO2 nanoparticles: A comprehensive study
    Ahmed, Ateeq
    Ali, T.
    Siddique, M. Naseem
    Ahmad, Abid
    Tripathi, P.
    [J]. JOURNAL OF APPLIED PHYSICS, 2017, 122 (08)
  • [2] Role of the Exposed Polar Facets in the Performance of Thermally and UV Activated ZnO Nanostructured Gas Sensors
    Alenezi, Mohammad R.
    Alshammari, Abdullah S.
    Jayawardena, K. D. G. I.
    Beliatis, Michail J.
    Henley, Simon J.
    Silva, S. R. P.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (34) : 17850 - 17858
  • [3] Facile ultrasonic-assisted synthesis of SiO2/ZnO core/shell nanostructures: A selective ethanol sensor at low temperatures with enhanced recovery
    Asgari, Mehrdad
    Saboor, Fahimeh Hooriabad
    Amouzesh, Seyed Parsa
    Coull, Martin Watt
    Khodadadi, Abbas Ali
    Mortazavi, Yadollah
    Hyodo, Takeo
    Shimizu, Yasuhiro
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2022, 368
  • [4] WO3-ZnFe2O4 heterojunction and rGO decoration synergistically improve the sensing performance of triethylamine
    Bai, Shouli
    Zuo, Ying
    Zhang, Kewei
    Zhao, Yingying
    Luo, Ruixian
    Li, Dianqing
    Chen, Aifan
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2021, 347
  • [5] Room temperature triethylamine sensing properties of polyaniline-WO3 nanocomposites with p-n heterojunctions
    Bai, Shouli
    Ma, Yaqiang
    Luo, Ruixian
    Chen, Aifan
    Li, Dianqing
    [J]. RSC ADVANCES, 2016, 6 (04): : 2687 - 2694
  • [6] Polythiophene-WO3 hybrid architectures for low-temperature H2S detection
    Bai, Shouli
    Zhang, Kewei
    Sun, Jianhua
    Zhang, Dongfeng
    Luo, Ruixian
    Li, Dianqing
    Liu, Chungchiun
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2014, 197 : 142 - 148
  • [7] Intrinsic sensing properties of the flower-like ZnO nanostructures
    Bai, Shouli
    Guo, Teng
    Li, Dianqing
    Luo, Ruixian
    Chen, Aifan
    Liu, Chung Chiun
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2013, 182 : 747 - 754
  • [8] Thickness-controlled porous hexagonal NiO nanodiscs electrodes for use in supercapacitors: How nanodiscs thickness influences electrochemical performance
    Chavhan, Madhav P.
    Slovak, Vaclav
    Chung-Hsin Lu
    [J]. JOURNAL OF ENERGY STORAGE, 2022, 50
  • [9] SnO2 nanoparticles/TiO2 nanofibers heterostructures: In situ fabrication and enhanced gas sensing performance
    Chen, Kunquan
    Chen, Shijian
    Pi, Mingyu
    Zhang, Dingke
    [J]. SOLID-STATE ELECTRONICS, 2019, 157 : 42 - 47
  • [10] Tunable nanofibril heterojunctions for controlling interfacial charge transfer in chemiresistive gas sensors
    Chen, Shuai
    Gao, Nan
    Bunes, Benjamin R.
    Zang, Ling
    [J]. JOURNAL OF MATERIALS CHEMISTRY C, 2019, 7 (44) : 13709 - 13735
1234567