title: Highly Responsive Room-Temperature Hydrogen Sensing of α-MoO₃ Nanoribbon Membranes.
abstract: [001]-Oriented α-MoO3 nanoribbons were synthesized via hydrothermal method at temperature from 120 to 200 °C and following assembled a membrane on interdigital electrodes to form sensors. The sensitivity, response speed, and recovery speed of the sensor improve with the increasing hydrothermal temperature. Among them, the sample obtained at 200 °C exhibits a room-temperature response time of 14.1 s toward 1000 ppm of H2. The nanoribbons also show good selectivity against CO, ethanol, and acetone, as well as high sensitivity to H2 with a concentration as low as 500 ppb. The hydrogen sensing behavior is dependent on the redox reaction between the H2 and chemisorbed oxygen species. Higher hydrothermal temperature creates larger specific surface area and higher Mo(5+) content, leading to increased chemisorbed oxygen species on the nanoribbon surface.
authors: †Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei Province, People's Republic of China.
authors: Shulin
authors: S
authors: Yang
authors: †Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei Province, People's Republic of China.
authors: Zhao
authors: Z
authors: Wang
authors: †Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei Province, People's Republic of China.
authors: Yongming
authors: Y
authors: Hu
authors: †Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei Province, People's Republic of China.
authors: Xiantao
authors: X
authors: Luo
authors: †Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei Province, People's Republic of China.
authors: Jinmei
authors: J
authors: Lei
authors: §School of Physics and Information Engineering, Jianghan University, Wuhan, Hubei Province, People's Republic of China.
authors: Di
authors: D
authors: Zhou
authors: ‡Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong SAR, People's Republic of China.
authors: Linfeng
authors: L
authors: Fei
authors: ‡Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong SAR, People's Republic of China.
authors: Yu
authors: Y
authors: Wang
authors: †Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei Province, People's Republic of China.
authors: Haoshuang
authors: H
authors: Gu
keywords: MoO3; hydrogen sensor; hydrothermal method; interdigital electrode; nanoribbons