Work

Lychee-like Bi2MoO6 Spheres for Highly Sensitive Room-Temperature Phosphine Sensing

Year: 2025

Type: article

Abstract: The increasing use of phosphine in various industries demands the development of reliable sensors. However, progress in this area has been slow, particularly for room-temperature detection. In this study, bismuth molybdate microspheres with a lychee-like structure (Lyc-Bi 2 MoO 6 ) were prepared via a one-step solvothermal method, which can be employed for the detection of trace concentrations of phosphine. The solvent used was a mixture of isopropanol and ethylene glycol in a 3:1 ratio. Various characterization techniques and gas sensing performance tests demonstrated that Lyc-Bi 2 MoO 6 is a potential phosphine-sensing material for room-temperature application. Sensing performance tests revealed that Lyc-Bi 2 MoO 6 exhibited an impressive ability to detect trace concentrations of phosphine, with a practical detection limit as low as 150 ppb (response = 8.11), rapid response (around 1 min), and excellent long-term stability (a maximum response attenuation of 9.46% over 10 weeks). Density functional theory calculations further aided in the in-depth analysis and interpretation of the behavior and response mechanism of phosphine on the surface of Lyc-Bi 2 MoO 6 .

Source: ACS Sensors

DOI: 10.1021/acssensors.4c03135

Authors: Xiaoxi He, Jinyong Xu, Yixiang Bian, Jean-Marc Tulliani, Chao Zhang

Institutions: Politecnico di Torino, Yangzhou University

Language: English

Topic: Gas Sensing Nanomaterials and Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Government of Jiangsu Province, Outstanding Youth Foundation of Jiangsu Province of China

Awards: G1168745830, G6575546606