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论文类型：期刊论文

发表时间：2016-07-01

发表刊物：SENSORS AND ACTUATORS B-CHEMICAL

收录刊物：SCIE、EI

卷号：230

页面范围：330-336

ISSN号：0925-4005

关键字：Reduced graphene oxide (rGO); TiO2; Gas sensors; Ammonia

摘要：Reduced graphene oxide (rGO) decorated TiO2 microspheres are prepared by using the hydrothermal method. The as-synthesized sample shows that TiO2 particles are connected by the rGO nanosheets while some TiO2 particles are found to be partly covered by rGO sheets. The rGO-decorated TiO2 based chemoresistive-type sensor shows good sensitivity and excellent selectivity to different concentrations of ammonia from 5 ppm to 50 ppm at room temperature. However, the response and recovery speeds of the sensor to ammonia are sluggish and need further optimization. (C) 2016 Elsevier B.V. All rights reserved.