Preparation and gas-sensing properties of SnO2/graphene quantum dots composites via solvothermal method

被引：22

作者：

Chu, Xiangfeng ^{[1
]}

Wang, Jiulin ^{[1
]}

Zhang, Jun ^{[1
]}

Dong, Yongping ^{[1
]}

Sun, Wenqi ^{[1
]}

Zhang, Wangbing ^{[1
]}

Bai, Linshan ^{[1
]}

机构：

[1] Anhui Univ Technol, Sch Chem & Chem Engn, Maanshan 243002, Anhui, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2017年 / 52卷 / 16期

关键词：

GRAPHENE OXIDE NANOCOMPOSITES; SENSITIVE DETECTION; SELECTIVE DETECTION; THIN-FILM; ACETONE; SENSOR; NANOPARTICLES; NO2; MICROSPHERES; PERFORMANCE;

D O I：

10.1007/s10853-017-1148-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SnO2/graphene quantum dots (GQDs) nano-composites were prepared via solvothermal method (160 degrees C, 10 h), in which graphene quantum dots were synthesized from graphene oxide by one-step solvothermal method. The nano-composites were characterized by means of HRTEM, XRD, SEM, FTIR, XPS and N-2 adsorption-desorption, respectively. The sensor devices were fabricated using SnO2/GQDs nano-composites as sensing materials. The effect of the GQDs content on the gas-sensing responses and the gas-sensing selectivity was investigated. The experimental results showed that the sensor based on SnO2/GQDs nano-composite (S-2) exhibited good response and good selectivity to acetone vapor. When operating at 275 degrees C, the responses of the sensor based on SnO2/GQDs nano-composite (S-2) to 1000 and 0.1 ppm acetone reached 120.6 and 1.3, respectively; the response time and the recovery time for 1000 ppm acetone were 17 and 13 s, respectively.

引用

页码：9441 / 9451

页数：11

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