TiO2 nanoparticles functionalized by Pd nanoparticles for gas-sensing application with enhanced butane response performances

被引：37

作者：

Chen, Nan ^{[1
]}

Deng, Dongyang ^{[2
]}

Li, Yuxiu ^{[2
]}

Liu, Xu ^{[2
]}

Xing, Xinxin ^{[2
]}

Xiao, Xuechun ^{[2
,3
]}

Wang, Yude ^{[1
,2
,3
]}

机构：

[1] Yunnan Univ, Dept Phys, Kunming 650091, Yunnan, Peoples R China

[2] Yunnan Univ, Sch Mat Sci & Engn, Kunming 650091, Yunnan, Peoples R China

[3] Yunnan Univ, Int Joint Ctr Natl Optoelect Energy Mat, Kunming 650091, Yunnan, Peoples R China

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

中国国家自然科学基金;

关键词：

SUBCRITICAL BUTANE; HIGH-SENSITIVITY; TIN OXIDE; SENSOR; SNO2; ETHANOL; FERRITE; LPG; DECOMPOSITION; REFRIGERANT;

D O I：

10.1038/s41598-017-08074-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Pd functionalized TiO2 nanoparticles were synthesized by a facile hydrothermal method. The structure, morphology, surface chemical states and surface area were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and N-2 adsorption-desorption isotherms, respectively. The as-synthesized pure and Pd functionalized TiO2 nanoparticles were used to fabricate indirect-heating gas sensor, and the gas-sensing characteristics towards butane were investigated. At the optimum temperature, the sensors possess good response, selectivity, response/recovery, repeatability as well as long-term stability. Especially for the high response, the response of 7.5 mol% Pd functionalized TiO2 nanoparticles based sensor reaches 33.93 towards 3000 ppm butane, which is about 9 times higher than that of pure TiO2 nanoparticles. The response and recovery time are 13 and 8 s, respectively. Those values demonstrate the potential of using as-synthesized Pd functionalized TiO2 nanoparticles as butane gas detection, particularly in the dynamic monitoring. Apart from these, a possible mechanism related to the enhanced sensing performance is also investigated.

引用

页数：11

共 51 条

[1]

Acgih TLVs, 2010, AM C GOV IND CINC

[2] Crystallographic characterization and NO2 gas sensing property of LnFeO3 prepared by thermal decomposition of Ln-Fe hexacyanocomplexes, Ln[Fe(CN)6]•nH2O, Ln = La, Nd, Sm, Gd, and Dy [J].

Aono, H ;

Traversa, E ;

Sakamoto, M ;

Sadaoka, Y .

SENSORS AND ACTUATORS B-CHEMICAL, 2003, 94 (02) :132-139

[3] Development of nanocrystalline CrNbO4 based p-type semiconducting gas sensor for LPG, ethanol and ammonia [J].

Balamurugan, C. ;

Bhuvanalogini, G. ;

Subramania, A. .

SENSORS AND ACTUATORS B-CHEMICAL, 2012, 168 :165-171

[4] High butane sensitivity and selectivity exhibited by combustion synthesized SnO2 nanoparticles [J].

Banerjee, Suparna ;

Nag, Pratanu ;

Majumdar, Sanhita ;

Devi, P. Sujatha .

MATERIALS RESEARCH BULLETIN, 2015, 65 :216-223

[5] Low temperature butane sensing using catalytic nano-crystalline lanthanum ferrite sensing element [J].

Bhargav, K. K. ;

Maity, A. ;

Ram, S. ;

Majumder, S. B. .

SENSORS AND ACTUATORS B-CHEMICAL, 2014, 195 :303-312

[6] Performance of a domestic refrigerator using TiO2-R600a nano-refrigerant as working fluid [J].

Bi, Shengshan ;

Guo, Kai ;

Liu, Zhigang ;

Wu, Jiangtao .

ENERGY CONVERSION AND MANAGEMENT, 2011, 52 (01) :733-737

[7] A highly sensitive and fast-responding ethanol sensor based on CdIn2O4 nanocrystals synthesized by a nonaqueous sol-gel route [J].

Cao, Minhua ;

Wang, Yude ;

Chen, Ting ;

Antonietti, Markus ;

Niederberger, Markus .

CHEMISTRY OF MATERIALS, 2008, 20 (18) :5781-5786

[8] Ni-Zn ferrite thick film gas sensors [J].

Dalawai, S. P. ;

Shinde, T. J. ;

Gadkari, A. B. ;

Vasambekar, P. N. .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2015, 26 (11) :9016-9025

[9] Liquefied petroleum gas (LPG) sensing performance of electron beam irradiated chemically deposited TiO2 thin films [J].

Dhawale, D. S. ;

Salunkhe, R. R. ;

Fulari, V. J. ;

Rath, M. C. ;

Sawant, Shilpa N. ;

Lokhande, C. D. .

SENSORS AND ACTUATORS B-CHEMICAL, 2009, 141 (01) :58-64

[10] Enhanced formaldehyde sensing performance of 3D hierarchical porous structure Pt-functionalized NiO via a facile solution combustion synthesis [J].

Dong, Chengjun ;

Li, Qing ;

Chen, Gang ;

Xiao, Xuechun ;

Wang, Yude .

SENSORS AND ACTUATORS B-CHEMICAL, 2015, 220 :171-179

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