Pd-loaded SnO2 hierarchical nanospheres for a high dynamic range H2S micro sensor

被引:28
作者
Su, Yue [1 ,2 ,3 ]
Chen, Peng [1 ,2 ,3 ]
Wang, Pengjian [4 ]
Ge, Jing [2 ,3 ,5 ]
Hu, Shi [4 ]
Zhao, Yuxin [6 ]
Xie, Gang [5 ]
Liang, Wenjie [2 ,3 ,7 ]
Song, Peng [1 ]
机构
[1] Liaoning Univ, Sch Phys, Shenyang 110036, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Key Lab Nanomat & Nanodevices, Beijing Natl Ctr Condensed Matter Phys, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Sch Phys Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
[4] Tianjin Univ, Tianjin Key Lab Mol Optoelect Sci, Sch Sci, Dept Chem, Tianjin 300072, Peoples R China
[5] Northwest Univ, Coll Chem & Mat Sci, Minist Educ, Key Lab Synthet & Nat Funct Mol Chem, Xian 710127, Shaanxi, Peoples R China
[6] SINOPEC Res Inst Safety Engn, State Key Lab Safety & Control Chem, Qingdao 266071, Peoples R China
[7] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
来源
RSC ADVANCES | 2019年 / 9卷 / 11期
基金
中国国家自然科学基金;
关键词
GAS-SENSING PROPERTIES; PPB-LEVEL; FAST-RESPONSE; THIN-FILMS; PERFORMANCE; NANOPARTICLES; SENSITIVITY; NANOWIRE; NANOFIBERS; NANOSTRUCTURES;
D O I
10.1039/c8ra09156k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Herein, a high dynamic range H2S micro gas sensor was achieved using hierarchical Pd-loaded SnO2 nanostructures as a sensing material. SnO2 nanospheres were synthesized using a hydrothermal method without any surfactants or templates, followed by Pd nanoparticle decoration via a facile method. A hierarchical nanostructure of Pd-loaded SnO2 was formed, and its sensing abilities were compared with those of pure SnO2 nanosphere-based sensors. The Pd-loaded SnO2 hierarchical nanostructures showed an ultra-sensitive H2S detection ability down to 10 ppb, a high dynamic range (4 orders of magnitude) up to 200 ppm, and a low working temperature (150 degrees C). Thus, this micro gas sensor based on Pd-loaded SnO2 hierarchical nanostructures has promising applications in universal H2S detection. The fabrication method presented herein is simple, renewable and operable and thus may be extended to synthesize other types of metal oxide-based semiconductor micro sensors for application in various fields.
引用
收藏
页码:5987 / 5994
页数:8
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