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A Plant-inspired Light Transducer for High-performance Near-infrared Light Mediated Gas Sensing

机译:A Plant-inspired Light Transducer for High-performance Near-infrared Light Mediated Gas Sensing

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摘要

Constructing near-infrared light (NIR) light-enhanced room temperature gas sensors is becoming more promising for practical application. In this study, learning from the structure and photosynthetic process of chlorophyll thylakoid membranes in plants, the first “Thylakoid membrane” structural formaldehyde (HCHO) sensor is constructed by matching the upconversion emission of the lanthanide-doped upconversion nanoparticles (UCNPs) and the UV–vis adsorption of the as-prepared nanocomposites. The NIR-mediated sensor exhibits excellent performances, including ultra-high response (Ra / Rg = 2.22, 1 ppm), low practical limit of detection (50 ppb), reliable repeatability, high selectivity, and broadband spectral response. The practicality of the NIR-mediated gas sensor is confirmed through the remote and external stimulation test. A study of sensing mechanism demonstrates that it is the UCNPs-based light transducer produces more light-induced oxygen species for gas response in the process of non-radiative/radiative energy transfer, playing a key role in significantly improving the sensing properties of the sensor. The universality of NIRmediated gas sensors based on UCNPs is verified using ZnO, In_2O_3, and SnO_2 systems. This work paves a way for fabricating high-performance NIR-mediated gas sensors and will expand the application fields of NIR light.

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  • 来源
    《Advanced functional materials》 |2023年第21期|2215099.1-2215099.10|共10页
  • 作者单位

    Guangdong Provincial Key Laboratory of Optical Information Materials and Technology Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006, P.R. China,National Center for Inter;

    Guangdong Provincial Key Laboratory of Optical Information Materials and Technology Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006, P.R. China;

    Department of Thoracic Oncology State Key Laboratory of Respiratory Diseases The First Affiliated Hospital of Guangzhou Medical University Guangzhou 510006, P.R. ChinaNational Center for International Research on Green Optoelectronics South China Normal University Guangzhou 510006, P.R. ChinaDepartment of Mechanical and Aerospace Engineering Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong SAR 999077, ChinaEEMCS Delft University of Technology 2628 CD Delft, The Netherlands;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类
  • 关键词

    gas sensors; light transducers; NIR-mediation; thylakoid membranes; upconversion nanoparticles;

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