Fast and recoverable NO2 detection achieved by assembling ZnO on Ti3C2Tx MXene nanosheets under UV illumination at room temperature

被引:118
作者
Fan, Chao [1 ]
Shi, Jia [1 ]
Zhang, Yongwei [1 ]
Quan, Wenjing [1 ]
Chen, Xiyu [1 ]
Yang, Jianhua [1 ]
Zeng, Min [1 ]
Zhou, Zhihua [1 ]
Su, Yanjie [1 ]
Wei, Hao [1 ]
Yang, Zhi [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Dept Micro Nano Elect, Key Lab Thin Film & Microfabricat,Minist Educ, Shanghai 200240, Peoples R China
基金
中国国家自然科学基金;
关键词
GAS SENSOR; GRAPHENE OXIDE; LAYER MOS2; PERFORMANCE; HETEROSTRUCTURES; NANOCOMPOSITES; IN2O3; NANOHYBRIDS; FABRICATION;
D O I
10.1039/d1nr06838e
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Recently, Ti3C2Tx MXenes have begun to receive attention in the field of gas sensors owing to their characteristics of high conductivity and abundant surface functional groups. However, Ti3C2Tx-based gas sensors still suffer from the drawbacks of low sensitivity and sluggish response/recovery speed towards target gases, limiting their development in further applications. In this work, Ti3C2Tx-ZnO nanosheet hybrids were fabricated through a simple sonication method. The Ti3C2Tx-ZnO nanosheet hybrids exhibited a short recovery time (10 s) under UV (ultraviolet) illumination, a short response time (22 s), a high sensitivity (367.63% to 20 ppm NO2) and selectivity. Furthermore, the Ti3C2Tx-ZnO sensor has prominent anti-humidity properties, as well as superior reproducibility in multiple tests. The abundant active sites in the Ti3C2Tx-ZnO nanosheet hybrids, including surface groups (-F, -OH, -O) of Ti3C2Tx and oxygen vacancies of ZnO, the formation of Schottky barriers between Ti3C2Tx and ZnO nanosheets and the rich photogenerated charge carriers of ZnO under UV illumination, together result in excellent gas-sensing performance. Density functional theory calculations have been further employed to explore the sensing performance of Ti3C2Tx and ZnO nanosheets, showing strong interactions existing between the NO2 and ZnO nanosheets. The main adsorption sites for NO2 were present on the ZnO nanosheets, while the Ti3C2Tx played the role of the conductive path to accelerate the transformation of charge carriers. Our work can provide an effective way for improving the gas-sensing performances of Ti3C2Tx-based gas sensors.
引用
收藏
页码:3441 / 3451
页数:11
相关论文
共 77 条
[1]   Strategy and Future Prospects to Develop Room-Temperature-Recoverable NO2 Gas Sensor Based on Two-Dimensional Molybdenum Disulfide [J].
Agrawal, Abhay V. ;
Kumar, Naveen ;
Kumar, Mukesh .
NANO-MICRO LETTERS, 2021, 13 (01)
[2]   Guidelines for Synthesis and Processing of Two-Dimensional Titanium Carbide (Ti3C2TX MXene) [J].
Alhabeb, Mohamed ;
Maleski, Kathleen ;
Anasori, Babak ;
Lelyukh, Pavel ;
Clark, Leah ;
Sin, Saleesha ;
Gogotsi, Yury .
CHEMISTRY OF MATERIALS, 2017, 29 (18) :7633-7644
[3]   MXene-based gas sensors [J].
Bhardwaj, Radha ;
Hazra, Arnab .
JOURNAL OF MATERIALS CHEMISTRY C, 2021, 9 (44) :15735-15754
[4]   Porous MXenes: Synthesis, structures, and applications [J].
Bu, Fanxing ;
Zagho, Moustafa M. ;
Ibrahim, Yasseen ;
Ma, Bing ;
Elzatahry, Ahmed ;
Zhao, Dongyuan .
NANO TODAY, 2020, 30
[5]   SnS2/MXene derived TiO2 hybrid for ultra-fast room temperature NO2 gas sensing [J].
Chen, Tianding ;
Yan, Wenhao ;
Wang, Ying ;
Li, Jinli ;
Hu, Haibo ;
Ho, Derek .
JOURNAL OF MATERIALS CHEMISTRY C, 2021, 9 (23) :7407-7416
[6]   UV-light-assisted NO2 gas sensor based on WS2/PbS heterostructures with full recoverability and reliable anti-humidity ability [J].
Chen, Xiqi ;
Hu, Jinyong ;
Chen, Pei ;
Yin, Mengqi ;
Meng, Fanpu ;
Zhang, Yong .
SENSORS AND ACTUATORS B-CHEMICAL, 2021, 339
[7]   In Situ Formation of Multiple Schottky Barriers in a Ti3C2MXene Film and its Application in Highly Sensitive Gas Sensors [J].
Choi, Junghoon ;
Kim, Yong-Jae ;
Cho, Soo-Yeon ;
Park, Kangho ;
Kang, Hohyung ;
Kim, Seon Joon ;
Jung, Hee-Tae .
ADVANCED FUNCTIONAL MATERIALS, 2020, 30 (40)
[8]   State of the art recent progress in two dimensional MXenes based gas sensors and biosensors: A comprehensive review [J].
Deshmukh, Kalim ;
Kovarik, Tomas ;
Pasha, S. K. Khadheer .
COORDINATION CHEMISTRY REVIEWS, 2020, 424
[9]   Exfoliated black phosphorus gas sensing properties at room temperature [J].
Donarelli, M. ;
Ottaviano, L. ;
Giancaterini, L. ;
Fioravanti, G. ;
Perrozzi, F. ;
Cantalini, C. .
2D MATERIALS, 2016, 3 (02)
[10]   Synthesis of ZnO Hierarchical Structures and Their Gas Sensing Properties [J].
Fan, Chao ;
Sun, Fazhe ;
Wang, Xiaomei ;
Huang, Zuzhen ;
Keshvardoostchokami, Mina ;
Kumar, Parveen ;
Liu, Bo .
NANOMATERIALS, 2019, 9 (09)