Enhanced Gas Sensing Properties of SnO2 Hollow Spheres Decorated with CeO2 Nanoparticles Heterostructure Composite Materials

被引：303

作者：

Liu, Jiangyang ^{[1
]}

Dai, Mingjun ^{[1
]}

Wang, Tianshuang ^{[1
]}

Sun, Peng ^{[1
]}

Liang, Xishuang ^{[1
]}

Lu, Geyu ^{[1
]}

Shimanoe, Kengo ^{[2
]}

Yamazoe, Noboru ^{[2
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, 2699 Qianjin St, Changchun 130012, Peoples R China

[2] Kyushu Univ, Fac Engn Sci, Dept Energy & Mat Sci, Kasuga, Fukuoka 8168580, Japan

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 10期

关键词：

CeO2/SnO2; composites; heterostructure; hollow spheres; gas sensor; sensing mechanism; METAL-OXIDES; SENSORS; NANOSHEETS; NANOCRYSTALS; FABRICATION; NANOWIRES; NANORODS; BEHAVIOR; ETHANOL; ROUTE;

D O I：

10.1021/acsami.6b00169

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

CeO2 decorated SnO2 hollow spheres were successfully synthesized via a two-step hydrothermal strategy. The morphology and structures of as-obtained CeO2/SnO2 composites were analyzed by various kinds of techniques. The SnO2 hollow spheres with uniform size around 300 rim were self-assembled with SnO2 nanoparticles and were hollow with a diameter of about 100 nm. The CeO2 nanoparticles on the surface of SnO2 hollow spheres could be clearly observed. X-ray photoelectron spectroscopy results confirmed the existence of Ce3+ and the increased amount of both chemisorbed oxygen and oxygen vacancy after the CeO2 decorated. Compared with pure SnO2 hollow spheres, such, composites revealed excellent enhanced sensing properties to ethanol. When the ethanol concentration was 100 ppm, the sensitivity of the CeO2/SnO2 composites was 37, which was 2.65-times higher than that of the primary SnO2 hollow spheres. The sensing mechanism of the enhanced gas sensing properties Was also discussed.

引用

页码：6669 / 6677

页数：9

共 56 条

[41] One-step synthesis and gas sensing properties of hierarchical Cd-doped SnO2 nanostructures [J].

Sun, Peng ;

Zhou, Xin ;

Wang, Chen ;

Wang, Biao ;

Xu, Xiumei ;

Lu, Geyu .

SENSORS AND ACTUATORS B-CHEMICAL, 2014, 190 :32-39

[42] Porous SnO2 hierarchical nanosheets: hydrothermal preparation, growth mechanism, and gas sensing properties [J].

Sun, Peng ;

Zhao, Wan ;

Cao, Yang ;

Guan, Yue ;

Sun, Yanfeng ;

Lu, Geyu .

CRYSTENGCOMM, 2011, 13 (11) :3718-3724

[43] Absorption and emission spectra of Ce3+ in elpasolite lattices [J].

Tanner, PA ;

Mak, CSK ;

Edelstein, NM ;

Murdoch, KM ;

Liu, GK ;

Huang, J ;

Seijo, L ;

Barandiarán, Z .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (43) :13225-13233

[44] Hierarchical α-Fe2O3/NiO Composites with a Hollow Structure for a Gas Sensor [J].

Wang, Chen ;

Cheng, Xiaoyang ;

Zhou, Xin ;

Sun, Peng ;

Hu, Xiaolong ;

Shimanoe, Kengo ;

Lu, Geyu ;

Yamazoe, Noboru .

ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (15) :12031-12037

[45] Gas-sensing properties of sensors based on single-crystalline SnO2 nanorods prepared by a simple molten-salt method [J].

Wang, Dan ;

Chu, Xiangfeng ;

Gong, Menglian .

SENSORS AND ACTUATORS B-CHEMICAL, 2006, 117 (01) :183-187

[46] A solution-phase, precursor route to polycrystalline SnO2 nanowires that can be used for gas sensing under ambient conditions [J].

Wang, YL ;

Jiang, XC ;

Xia, YN .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (52) :16176-16177

[47] Semiconducting metal oxides as sensors for environmentally hazardous gases [J].

Wetchakun, K. ;

Samerjai, T. ;

Tamaekong, N. ;

Liewhiran, C. ;

Siriwong, C. ;

Kruefu, V. ;

Wisitsoraat, A. ;

Tuantranont, A. ;

Phanichphant, S. .

SENSORS AND ACTUATORS B-CHEMICAL, 2011, 160 (01) :580-591

[48] Synthesis and H2S sensing properties of CuO-SnO2 core/shell PN-junction nanorods [J].

Xue, Xinyu ;

Xing, Lili ;

Chen, Yujin ;

Shi, Songlin ;

Wang, Yanguo ;

Wang, Taihong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (32) :12157-12160

[49] Oxide semiconductor gas sensors [J].

Yamazoe, N ;

Sakai, G ;

Shimanoe, K .

CATALYSIS SURVEYS FROM ASIA, 2003, 7 (01) :63-75

[50] Ultrasensitive and Highly Selective Gas Sensors Based on Electrospun SnO2 Nanofibers Modified by Pd Loading [J].

Yang, Dae-Jin ;

Kamienchick, Itai ;

Youn, Doo Young ;

Rothschild, Avner ;

Kim, Il-Doo .

ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (24) :4258-4264

← 1 2 3 4 5 6 →